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  • Aerodynamics
  • Computer Programming and Software
  • Meteorology and Climatology
  • Mice
  • 1995-1999  (610)
  • 1998  (610)
  • 1
    Electronic Resource
    Electronic Resource
    A methodology for assessing manufacturing cost due to tolerance of aerodynamic surface features on turbofan nacelles (1998)
    Springer
    The international journal of advanced manufacturing technology 14 (1998), S. 894-900 
    Details
    ISSN: 1433-3015
    Keywords: Aerodynamics ; Concurrent engineering ; Manufacturing costs ; Optimisation ; Statistical models ; Tolerances
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A component of the direct operating cost of aircraft is that associated with the manufacturing cost. This affects depreciation, interest, insurance and maintenance charges. By relaxing the requirements for aerodynamic surface smoothness the manufacturing cost can be reduced at the expense of an increase in drag and corresponding fuel costs. This work is part of a study to examine this multidisciplinary problem. Only isolated turbofan nacelles are considered. The costs associated with assigning different tolerance levels to the feature dimensions on nacelles are assessed. A statistical procedure is employed to estimate the cost-tolerance relationship for eleven features involving gaps, steps, surface profile and fastener flushness. This procedure requires actual manufacturing and cost source data. A knowledge of the cost-tolerance relationships is useful in a concurrent engineering context. It will allow aerodynamicists to optimise surface smoothness in consultation with production engineers, thus achieving the best compromise between cost and drag.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01179079
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  • 2
    Electronic Resource
    Electronic Resource
    Energetic cost of hovering flight in a nectar-feeding bat measured with fast-response respirometry (1998)
    Springer
    Journal of comparative physiology 168 (1998), S. 434-444 
    Details
    ISSN: 1432-136X
    Keywords: Key words Hovering flight power ; Aerodynamics ; Fast-response respirometry ; Bat ; Hummingbird
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Hover-feeding glossophagine bats provide, in addition to the hummingbirds, a second vertebrate model for the analysis of hovering flight based on metabolic measurement and aerodynamic theory. In this study, the power input of hovering Glossophaga soricina bats (11.9 g) was measured by standard respirometry and fast-response (〈0.2 s) oxygen analysis. Bats needed 5–7 s after a rest-to-flight transition to return to a respiratory steady state. Therefore, only hovering events preceeded by a 7-s flight interval were evaluated. V˙O2 during hovering fluctuated with a frequency of 3–5 Hz, which corresponded in frequency to the licking movement of the tongue. During hovering, bats often may have hypoventilated as indicated by reduced V˙O2 and a respiratory exchange ratio (RER) well below the steady-state value of 1. Steady-state oxygen consumption (and derived power input) during hovering was estimated to be 27 (25–29) ml O2 g−1 h−1 (158 W kg−1 or 1.88 W) in the 11.9-g bats as indicated by three independent findings: (1) V˙O2 was 26 ml O2 g−1 h−1 after 6.5 s of hovering, (2) the mean RER during single hovering events was at its steady-state level of 1 only at oxygen uptake rates of 25–29 ml g−1 h−1, and (3) when the oxygen potentially released from estimated oxygen stores was added to the measured oxygen uptake, the upper limit for oxygen consumption during hovering was found to be 29 ml O2 g−1 h−1. Hovering power input was about 1.2 times the value of minimum flight power input (Winter and von Helversen 1998) and thus well below the 1.7–2.6 difference in power output postulated by aerodynamic theory (Norberg et al. 1993). Mass specific power input was 40% less than in hummingbirds. Thus, within the possible modes of hovering flight, Glossophaga bats seem to operate at the high-efficiency end of the spectrum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003600050163
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  • 3
    Electronic Resource
    Electronic Resource
    Genetic and Developmental Influences on Infant Mouse Ultrasonic Calling. II. Developmental Patterns in the Calls of Mice 2–12 Days of Age (1998)
    Springer
    Behavior genetics 28 (1998), S. 315-325 
    Details
    ISSN: 1573-3297
    Keywords: Mice ; ultrasonic calls ; infants ; individual differences ; signatures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract Infant house mice, Mus musculus, produce ultrasonic calls that reliably lead to retrieval by adult mice. While individual differences in calls have been demonstrated both among and within species, the influences of age and sex on call characteristics have not been systematically investigated in mice. This study examined the influences of age, sex, and genotype (inbred versus hybrid) on the rate, length, and frequency characteristics of the calls of 486 male and female mice from 2 to 12 days of age. Rate of calling followed a shallow inverted U-shaped function across days. Call lengths decreased and call frequency characteristics increased, in a linear manner, with age. Females emitted fewer calls, with a smaller bandwidth, at some ages than males. Hybrid pups produced more calls of greater length and a lower frequency than inbred pups. These results indicate the presence of cues that could allow adult mice to behave differentially toward pups as a function of their age and sex.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1021679615792
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  • 4
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    Structural basis of plasticity in T cell receptor recognition of a self peptide-MHC antigen (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-03-21
    Description: The T cell receptor (TCR) inherently has dual specificity. T cells must recognize self-antigens in the thymus during maturation and then discriminate between foreign pathogens in the periphery. A molecular basis for this cross-reactivity is elucidated by the crystal structure of the alloreactive 2C TCR bound to self peptide-major histocompatibility complex (pMHC) antigen H-2Kb-dEV8 refined against anisotropic 3.0 angstrom resolution x-ray data. The interface between peptide and TCR exhibits extremely poor shape complementarity, and the TCR beta chain complementarity-determining region 3 (CDR3) has minimal interaction with the dEV8 peptide. Large conformational changes in three of the TCR CDR loops are induced upon binding, providing a mechanism of structural plasticity to accommodate a variety of different peptide antigens. Extensive TCR interaction with the pMHC alpha helices suggests a generalized orientation that is mediated by the Valpha domain of the TCR and rationalizes how TCRs can effectively "scan" different peptides bound within a large, low-affinity MHC structural framework for those that provide the slight additional kinetic stabilization required for signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Garcia, K C -- Degano, M -- Pease, L R -- Huang, M -- Peterson, P A -- Teyton, L -- Wilson, I A -- AI42266/AI/NIAID NIH HHS/ -- AI42267/AI/NIAID NIH HHS/ -- R01 CA58896/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1998 Feb 20;279(5354):1166-72.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and the Skaggs Institute of Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9469799" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Crystallization ; Crystallography, X-Ray ; H-2 Antigens/*chemistry/*immunology/metabolism ; Ligands ; Mice ; Mice, Transgenic ; Models, Molecular ; Mutation ; Oligopeptides/*chemistry/immunology/metabolism ; Protein Conformation ; Protein Structure, Secondary ; Receptors, Antigen, T-Cell, alpha-beta/*chemistry/*immunology/metabolism ; Recombinant Proteins
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Identification of alpha-dystroglycan as a receptor for lymphocytic choriomeningitis virus and Lassa fever virus (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-12-16
    Description: A peripheral membrane protein that is interactive with lymphocytic choriomeningitis virus (LCMV) was purified from cells permissive to infection. Tryptic peptides from this protein were determined to be alpha-dystroglycan (alpha-DG). Several strains of LCMV and other arenaviruses, including Lassa fever virus (LFV), Oliveros, and Mobala, bound to purified alpha-DG protein. Soluble alpha-DG blocked both LCMV and LFV infection. Cells bearing a null mutation of the gene encoding DG were resistant to LCMV infection, and reconstitution of DG expression in null mutant cells restored susceptibility to LCMV infection. Thus, alpha-DG is a cellular receptor for both LCMV and LFV.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cao, W -- Henry, M D -- Borrow, P -- Yamada, H -- Elder, J H -- Ravkov, E V -- Nichol, S T -- Compans, R W -- Campbell, K P -- Oldstone, M B -- AG 00080/AG/NIA NIH HHS/ -- AI 09484/AI/NIAID NIH HHS/ -- DK09712/DK/NIDDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1998 Dec 11;282(5396):2079-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Virology, Department of Neuropharmacology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9851928" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Arenavirus/metabolism ; Cell Line ; Cytoskeletal Proteins/chemistry/genetics/*metabolism ; Dystroglycans ; Lassa virus/*metabolism/physiology ; Lymphocytic choriomeningitis virus/*metabolism/physiology ; Membrane Glycoproteins/chemistry/genetics/*metabolism ; Mice ; Molecular Sequence Data ; Mutation ; Receptors, Virus/chemistry/*metabolism ; Recombinant Fusion Proteins/metabolism ; Virus Replication
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    Role of IQGAP1, a target of the small GTPases Cdc42 and Rac1, in regulation of E-cadherin- mediated cell-cell adhesion (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-08-07
    Description: The small guanosine triphosphatases (GTPases) Cdc42 and Rac1 regulate E-cadherin-mediated cell-cell adhesion. IQGAP1, a target of Cdc42 and Rac1, was localized with E-cadherin and beta-catenin at sites of cell-cell contact in mouse L fibroblasts expressing E-cadherin (EL cells), and interacted with E-cadherin and beta-catenin both in vivo and in vitro. IQGAP1 induced the dissociation of alpha-catenin from a cadherin-catenin complex in vitro and in vivo. Overexpression of IQGAP1 in EL cells, but not in L cells expressing an E-cadherin-alpha-catenin chimeric protein, resulted in a decrease in E-cadherin-mediated cell-cell adhesive activity. Thus, IQGAP1, acting downstream of Cdc42 and Rac1, appears to regulate cell-cell adhesion through the cadherin-catenin pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kuroda, S -- Fukata, M -- Nakagawa, M -- Fujii, K -- Nakamura, T -- Ookubo, T -- Izawa, I -- Nagase, T -- Nomura, N -- Tani, H -- Shoji, I -- Matsuura, Y -- Yonehara, S -- Kaibuchi, K -- New York, N.Y. -- Science. 1998 Aug 7;281(5378):832-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Signal Transduction, Nara Institute of Science and Technology, Ikoma 630-0101, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9694656" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cadherins/*metabolism ; *Cell Adhesion ; Cell Cycle Proteins/*metabolism ; Cell Membrane/metabolism ; Cytoskeletal Proteins/metabolism ; GTP Phosphohydrolases/*metabolism ; GTP-Binding Proteins/*metabolism ; GTPase-Activating Proteins ; L Cells (Cell Line) ; Mice ; Mutation ; Proteins/*metabolism ; Recombinant Fusion Proteins/metabolism ; Recombinant Proteins/metabolism ; *Trans-Activators ; alpha Catenin ; beta Catenin ; cdc42 GTP-Binding Protein ; rac GTP-Binding Proteins
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    A receptor/cytoskeletal movement triggered by costimulation during T cell activation (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-12-18
    Description: During T cell activation, the engagement of costimulatory molecules is often crucial to the development of an effective immune response, but the mechanism by which this is achieved is not known. Here, it is shown that beads attached to the surface of a T cell translocate toward the interface shortly after the start of T cell activation. This movement appears to depend on myosin motor proteins and requires the engagement of the major costimulatory receptor pairs, B7-CD28 and ICAM-1-LFA-1. This suggests that the engagement of costimulatory receptors triggers an active accumulation of molecules at the interface of the T cell and the antigen-presenting cell, which then increases the overall amplitude and duration of T cell signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wulfing, C -- Davis, M M -- New York, N.Y. -- Science. 1998 Dec 18;282(5397):2266-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9856952" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigen Presentation ; Antigen-Presenting Cells/immunology ; Antigens, CD/*metabolism ; Antigens, CD28/metabolism ; Antigens, CD86 ; Biotinylation ; CHO Cells ; Calcium/metabolism ; Cricetinae ; Cytoskeleton/*physiology ; Intercellular Adhesion Molecule-1/metabolism ; *Lymphocyte Activation ; Lymphocyte Function-Associated Antigen-1/metabolism ; Membrane Glycoproteins/metabolism ; Mice ; Microspheres ; Molecular Motor Proteins/physiology ; Myosins/physiology ; Phosphatidylinositol 3-Kinases/metabolism ; Receptors, Antigen, T-Cell/immunology ; Signal Transduction ; T-Lymphocytes/*immunology/metabolism/ultrastructure ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Automating a mouse (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-06-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sikorski, R -- Peters, R -- New York, N.Y. -- Science. 1998 May 15;280(5366):1101.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9616082" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Gene Library ; Gene Targeting ; *Genetic Techniques ; Genetic Vectors ; Mice ; Mice, Knockout/*genetics ; Mutagenesis, Insertional ; Sequence Analysis, DNA ; *Stem Cells
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Mismatch repair co-opted by hypermutation (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-03-21
    Description: Mice homozygous for a disrupted allele of the mismatch repair gene Pms2 have a mutator phenotype. When this allele is crossed into quasi-monoclonal (QM) mice, which have a very limited B cell repertoire, homozygotes have fewer somatic mutations at the immunoglobulin heavy chain and lambda chain loci than do heterozygotes or wild-type QM mice. That is, mismatch repair seems to contribute to somatic hypermutation rather than stifling it. It is suggested that at immunoglobulin loci in hypermutable B cells, mismatched base pairs are "corrected" according to the newly synthesized DNA strand, thereby fixing incipient mutations instead of eliminating them.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cascalho, M -- Wong, J -- Steinberg, C -- Wabl, M -- 1R01 GM37699/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1998 Feb 20;279(5354):1207-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, University of California, San Francisco, CA 94143-0670, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9469811" target="_blank"〉PubMed〈/a〉
    Keywords: *Adenosine Triphosphatases ; Alleles ; Amino Acid Sequence ; Animals ; B-Lymphocytes/immunology ; Base Composition ; Base Sequence ; Cloning, Molecular ; Crosses, Genetic ; *DNA Repair ; *DNA Repair Enzymes ; *DNA-Binding Proteins ; Female ; Gene Rearrangement ; *Genes, Immunoglobulin ; Heterozygote ; Immunoglobulin Heavy Chains/chemistry/genetics ; Immunoglobulin Variable Region/chemistry/*genetics ; Immunoglobulin lambda-Chains/chemistry/genetics ; Male ; Mice ; Mice, Knockout ; Molecular Sequence Data ; *Mutation ; Proteins/*genetics/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    New potential for human embryonic stem cells (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-12-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gearhart, J -- New York, N.Y. -- Science. 1998 Nov 6;282(5391):1061-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Gynecology and Obstetrics, Johns Hopkins Medicine, Baltimore, MD 21287, USA. gearhart@jhmi.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9841453" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blastocyst/*cytology ; *Cell Culture Techniques ; Cell Differentiation ; *Cell Line ; Cell Lineage ; *Embryo Research ; Embryo, Mammalian/*cytology ; Federal Government ; Germ Cells/*cytology ; Government Regulation ; Guidelines as Topic ; Humans ; Major Histocompatibility Complex ; Mice ; Research Support as Topic ; Risk Assessment ; Stem Cell Transplantation ; Stem Cells/*cytology ; Transplantation Immunology ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 11
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    Expansion of the allelic exclusion principle? (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-04-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chess, A -- New York, N.Y. -- Science. 1998 Mar 27;279(5359):2067-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead Institute for Biomedical Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA. chess@wi.mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9537917" target="_blank"〉PubMed〈/a〉
    Keywords: *Alleles ; Animals ; CD4-Positive T-Lymphocytes/*immunology ; DNA Replication ; *Gene Expression Regulation ; Genes, Immunoglobulin ; Interleukin-2/*genetics ; Lymphocyte Activation ; Mice ; Polymerase Chain Reaction ; Receptors, Antigen, T-Cell/metabolism ; Signal Transduction ; Transcription, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 12
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    Impaired locomotion and dopamine signaling in retinoid receptor mutant mice (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-02-28
    Description: In the adult mouse, single and compound null mutations in the genes for retinoic acid receptor beta and retinoid X receptors beta and gamma resulted in locomotor defects related to dysfunction of the mesolimbic dopamine signaling pathway. Expression of the D1 and D2 receptors for dopamine was reduced in the ventral striatum of mutant mice, and the response of double null mutant mice to cocaine, which affects dopamine signaling in the mesolimbic system, was blunted. Thus, retinoid receptors are involved in the regulation of brain functions, and retinoic acid signaling defects may contribute to pathologies such as Parkinson's disease and schizophrenia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Krezel, W -- Ghyselinck, N -- Samad, T A -- Dupe, V -- Kastner, P -- Borrelli, E -- Chambon, P -- New York, N.Y. -- Science. 1998 Feb 6;279(5352):863-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Genetique et de Biologie Moleculaire et Cellulaire, CNRS, INSERM, Universite Louis Pasteur, College de France, Boite Postale 163, 67404 Illkirch Cedex, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9452386" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cocaine/pharmacology ; Corpus Striatum/*metabolism ; Dimerization ; Dopamine/*metabolism ; Locomotion ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; *Motor Activity/drug effects ; Muscle, Skeletal/physiology ; Parkinson Disease/etiology ; Peripheral Nervous System/physiology ; Receptors, Dopamine D1/genetics/metabolism ; Receptors, Dopamine D2/genetics/metabolism ; Receptors, Retinoic Acid/genetics/*physiology ; Retinoid X Receptors ; Schizophrenia/etiology ; *Signal Transduction ; Transcription Factors/genetics/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 13
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    Molecular basis of T cell inactivation by CTLA-4 (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-12-18
    Description: CTLA-4, a negative regulator of T cell function, was found to associate with the T cell receptor (TCR) complex zeta chain in primary T cells. The association of TCRzeta with CTLA-4, reconstituted in 293 transfectants, was enhanced by p56(lck)-induced tyrosine phosphorylation. Coexpression of the CTLA-4-associated tyrosine phosphatase, SHP-2, resulted in dephosphorylation of TCRzeta bound to CTLA-4 and abolished the p56(lck)-inducible TCRzeta-CTLA-4 interaction. Thus, CTLA-4 inhibits TCR signal transduction by binding to TCRzeta and inhibiting tyrosine phosphorylation after T cell activation. These findings have broad implications for the negative regulation of T cell function and T cell tolerance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, K M -- Chuang, E -- Griffin, M -- Khattri, R -- Hong, D K -- Zhang, W -- Straus, D -- Samelson, L E -- Thompson, C B -- Bluestone, J A -- P01 AI35294-6/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1998 Dec 18;282(5397):2263-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ben May Institute for Cancer Research, and Committee on Immunology, University of Chicago, Chicago, IL 60637, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9856951" target="_blank"〉PubMed〈/a〉
    Keywords: Abatacept ; Animals ; Antigens, CD ; Antigens, Differentiation/*metabolism ; CTLA-4 Antigen ; Cell Line ; Cells, Cultured ; Humans ; *Immunoconjugates ; Intracellular Signaling Peptides and Proteins ; *Lymphocyte Activation ; Lymphocyte Specific Protein Tyrosine Kinase p56(lck)/genetics/metabolism ; Membrane Proteins/*metabolism ; Mice ; Mice, Inbred BALB C ; Models, Immunological ; Phosphorylation ; Phosphotyrosine/metabolism ; Protein Tyrosine Phosphatase, Non-Receptor Type 11 ; Protein Tyrosine Phosphatase, Non-Receptor Type 6 ; Protein Tyrosine Phosphatases/genetics/metabolism ; Receptors, Antigen, T-Cell/*metabolism ; Recombinant Fusion Proteins/metabolism ; SH2 Domain-Containing Protein Tyrosine Phosphatases ; *Signal Transduction ; T-Lymphocytes/*immunology ; Transfection ; src Homology Domains
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 14
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    FADD: essential for embryo development and signaling from some, but not all, inducers of apoptosis (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-04-16
    Description: FADD (also known as Mort-1) is a signal transducer downstream of cell death receptor CD95 (also called Fas). CD95, tumor necrosis factor receptor type 1 (TNFR-1), and death receptor 3 (DR3) did not induce apoptosis in FADD-deficient embryonic fibroblasts, whereas DR4, oncogenes E1A and c-myc, and chemotherapeutic agent adriamycin did. Mice with a deletion in the FADD gene did not survive beyond day 11.5 of embryogenesis; these mice showed signs of cardiac failure and abdominal hemorrhage. Chimeric embryos showing a high contribution of FADD null mutant cells to the heart reproduce the phenotype of FADD-deficient mutants. Thus, not only death receptors, but also receptors that couple to developmental programs, may use FADD for signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yeh, W C -- de la Pompa, J L -- McCurrach, M E -- Shu, H B -- Elia, A J -- Shahinian, A -- Ng, M -- Wakeham, A -- Khoo, W -- Mitchell, K -- El-Deiry, W S -- Lowe, S W -- Goeddel, D V -- Mak, T W -- CA13106/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1998 Mar 20;279(5358):1954-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Amgen Institute, University of Toronto, Toronto, Ontario, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9506948" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Animals ; Antigens, CD95/genetics/physiology ; *Apoptosis ; Carrier Proteins/genetics/*physiology ; Cell Transformation, Neoplastic ; Cells, Cultured ; Doxorubicin/pharmacology ; *Embryonic and Fetal Development ; Endothelium, Vascular/embryology ; Fas-Associated Death Domain Protein ; Female ; Gene Expression ; Gene Targeting ; Heart/*embryology ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Mutation ; Oncogenes ; Receptors, Tumor Necrosis Factor/genetics/physiology ; Signal Transduction ; Tumor Necrosis Factor-alpha/pharmacology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 15
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    Progress in progressive hearing loss (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-04-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Steel, K P -- New York, N.Y. -- Science. 1998 Mar 20;279(5358):1870-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council, Institute of Hearing Research, Nottingham NG7 2RD, UK. karen@ihr.mrc.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9537904" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Animals ; Carrier Proteins/genetics/physiology ; Cell Differentiation ; Chromosome Mapping ; Chromosomes, Human, Pair 5/genetics ; Deafness/*genetics ; Dyneins ; Female ; Gene Targeting ; Genes, Dominant ; Hair Cells, Auditory/physiology ; Hearing Loss, Sensorineural/*genetics ; Homeodomain Proteins/*genetics/metabolism ; Humans ; Male ; Mice ; Myosins/genetics/physiology ; Pedigree ; Sequence Deletion ; Transcription Factor Brn-3C ; Transcription Factors/*genetics/metabolism/physiology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 16
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    Regulation of the proinflammatory effects of Fas ligand (CD95L) (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-11-30
    Description: Fas ligand (CD95L) inhibits T cell function in immune-privileged organs such as the eye and testis, yet in most tissues CD95L expression induces potent inflammatory responses. With a stably transfected colon carcinoma cell line, CT26-CD95L, the molecular basis for these divergent responses was defined. When injected subcutaneously, rejection of CT26-CD95L was caused by neutrophils activated by CD95L. CT26-CD95L survived in the intraocular space because of the presence of transforming growth factor-beta (TGF-beta), which inhibited neutrophil activation. Providing TGF-beta to subcutaneous sites protected against tumor rejection. Thus, these cytokines together generate a microenvironment that promotes immunologic tolerance, which may aid in the amelioration of allograft rejection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, J J -- Sun, Y -- Nabel, G J -- New York, N.Y. -- Science. 1998 Nov 27;282(5394):1714-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, University of Michigan Medical Center, Departments of Internal Medicine and Biological Chemistry, 1150 West Medical Center Drive, 4520 Medical Science Research Building I, Ann Arbor, MI 48109-0650, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9831564" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anterior Chamber ; Apoptosis ; Calcium-Calmodulin-Dependent Protein Kinases/antagonists & inhibitors/metabolism ; Cytotoxicity, Immunologic ; Fas Ligand Protein ; Female ; Graft Rejection ; Humans ; Immune Tolerance ; Inflammation/*immunology ; Jurkat Cells ; Membrane Glycoproteins/*physiology ; Mice ; Mice, Inbred BALB C ; *Mitogen-Activated Protein Kinases ; Neoplasm Transplantation ; Neoplasms, Experimental/*immunology/pathology ; *Neutrophil Activation ; Neutrophils/immunology ; Transfection ; Transforming Growth Factor beta/pharmacology ; Tumor Cells, Cultured ; p38 Mitogen-Activated Protein Kinases
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  • 17
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    BSE and prions: uncertainties about the agent (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-01-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chesebro, B -- New York, N.Y. -- Science. 1998 Jan 2;279(5347):42-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Persistent Virus Diseases, Rocky Mountain Laboratories, Hamilton, MT 59840, USA. bchesebro@nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9441410" target="_blank"〉PubMed〈/a〉
    Keywords: Amyloid/chemistry ; Amyloidosis/metabolism ; Animals ; Cattle ; Creutzfeldt-Jakob Syndrome/epidemiology/*etiology/transmission ; Disease Susceptibility ; Encephalopathy, Bovine Spongiform/epidemiology/*etiology/transmission ; Gene Expression ; Great Britain/epidemiology ; Humans ; Mice ; Mice, Transgenic ; Mutation ; Prion Diseases/*etiology/transmission ; Prions/chemistry/genetics/metabolism/*pathogenicity ; Virus Physiological Phenomena ; Viruses/pathogenicity
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 18
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    BRCA1 required for transcription-coupled repair of oxidative DNA damage (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-08-14
    Description: The breast and ovarian cancer susceptibility gene BRCA1 encodes a zinc finger protein of unknown function. Association of the BRCA1 protein with the DNA repair protein Rad51 and changes in the phosphorylation and cellular localization of the protein after exposure to DNA-damaging agents are consistent with a role for BRCA1 in DNA repair. Here, it is shown that mouse embryonic stem cells deficient in BRCA1 are defective in the ability to carry out transcription-coupled repair of oxidative DNA damage, and are hypersensitive to ionizing radiation and hydrogen peroxide. These results suggest that BRCA1 participates, directly or indirectly, in transcription-coupled repair of oxidative DNA damage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gowen, L C -- Avrutskaya, A V -- Latour, A M -- Koller, B H -- Leadon, S A -- CA40453/CA/NCI NIH HHS/ -- CA70490/CA/NCI NIH HHS/ -- IP50CA58223/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1998 Aug 14;281(5379):1009-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Curriculum in Genetics and Molecular Biology and Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9703501" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; BRCA1 Protein/genetics/*physiology ; Cell Line ; DNA Damage ; *DNA Repair ; Hydrogen Peroxide ; Mice ; Oxidation-Reduction ; Stem Cells ; Thymine/analogs & derivatives/immunology/metabolism ; Transcription, Genetic ; Ultraviolet Rays
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 19
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    Molecular mimicry by herpes simplex virus-type 1: autoimmune disease after viral infection (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-03-21
    Description: Viral infection is sometimes associated with the initiation or exacerbation of autoimmune disease, although the underlying mechanisms remain unclear. One proposed mechanism is that viral determinants that mimic host antigens trigger self-reactive T cell clones to destroy host tissue. An epitope expressed by a coat protein of herpes simplex virus-type 1 (HSV-1) KOS strain has now been shown to be recognized by autoreactive T cells that target corneal antigens in a murine model of autoimmune herpes stromal keratitis. Mutant HSV-1 viruses that lacked this epitope did not induce autoimmune disease. Thus, expression of molecular mimics can influence the development of autoimmune disease after viral infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhao, Z S -- Granucci, F -- Yeh, L -- Schaffer, P A -- Cantor, H -- AI 37562/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1998 Feb 27;279(5355):1344-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Harvard Medical School, and Department of Cancer Immunology and AIDS, Dana-Farber Cancer Institute, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9478893" target="_blank"〉PubMed〈/a〉
    Keywords: Adoptive Transfer ; Amino Acid Sequence ; Animals ; Autoantigens/immunology ; Autoimmune Diseases/*immunology ; CD4-Positive T-Lymphocytes/immunology ; Capsid/chemistry/genetics/*immunology ; *Capsid Proteins ; Cornea/*immunology ; Epitopes ; Eye Proteins/immunology ; Herpesvirus 1, Human/*immunology ; Keratitis, Herpetic/*immunology ; Lymphocyte Activation ; Mice ; Mice, Inbred BALB C ; Mice, Nude ; Mice, SCID ; *Molecular Mimicry ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Oligopeptides/immunology ; Viral Proteins
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 20
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    More deafness genes (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-06-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Steel, K P -- Brown, S D -- New York, N.Y. -- Science. 1998 May 29;280(5368):1403.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council, Institute of Hearing Research, University Park, Nottingham NG7 2RD, UK. karen@ihr.mrc.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9634418" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/physiology ; Animals ; Cilia/physiology ; Deafness/*genetics ; Dyneins ; Extracellular Matrix Proteins/*genetics/physiology ; GPI-Linked Proteins ; Hair Cells, Auditory/physiology/ultrastructure ; Hearing ; Humans ; Membrane Glycoproteins/*genetics/physiology ; Mice ; Mice, Mutant Strains ; Mutation ; Myosin Heavy Chains/genetics/physiology ; Myosins/*genetics/physiology ; Tectorial Membrane/physiology
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  • 21
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    Targeting the receptor-Gq interface to inhibit in vivo pressure overload myocardial hypertrophy (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-05-09
    Description: Hormones and neurotransmitters may mediate common responses through receptors that couple to the same class of heterotrimeric guanine nucleotide-binding (G) protein. For example, several receptors that couple to Gq class proteins can induce cardiomyocyte hypertrophy. Class-specific inhibition of Gq-mediated signaling was produced in the hearts of transgenic mice by targeted expression of a carboxyl-terminal peptide of the alpha subunit Galphaq. When pressure overload was surgically induced, the transgenic mice developed significantly less ventricular hypertrophy than control animals. The data demonstrate the role of myocardial Gq in the initiation of myocardial hypertrophy and indicate a possible strategy for preventing pathophysiological signaling by simultaneously blocking multiple receptors coupled to Gq.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Akhter, S A -- Luttrell, L M -- Rockman, H A -- Iaccarino, G -- Lefkowitz, R J -- Koch, W J -- HL-03041/HL/NHLBI NIH HHS/ -- HL-09436/HL/NHLBI NIH HHS/ -- HL-16037/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1998 Apr 24;280(5363):574-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Surgery, Duke University Medical Center, Durham, NC 27710, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9554846" target="_blank"〉PubMed〈/a〉
    Keywords: Angiotensin II/pharmacology ; Animals ; Atrial Natriuretic Factor/genetics ; COS Cells ; Diglycerides/metabolism ; Enzyme Activation ; GTP-Binding Proteins/antagonists & inhibitors/genetics/*metabolism ; Gene Expression Regulation ; Gene Targeting ; Hypertrophy, Left Ventricular/*metabolism/prevention & control ; Inositol Phosphates/metabolism ; Mice ; Mice, Transgenic ; Mitogen-Activated Protein Kinase 1/metabolism ; Myocardium/*metabolism ; Peptide Fragments/genetics/metabolism ; Phenylephrine/pharmacology ; Receptors, Adrenergic, alpha/*metabolism ; Signal Transduction ; Transfection ; Transgenes ; Ventricular Pressure
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  • 22
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    Control of neonatal tolerance to tissue antigens by peripheral T cell trafficking (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-11-13
    Description: Self tolerance is acquired by the developing immune system. As reported here, particular properties of the neonatal tissue contribute to this process. Neonatal skin, but not adult skin, was accessible for naive CD8 T cells. In mouse bone marrow chimeras generated at different ages, recent thymic emigrants were tolerized to a skin-expressed major histocompatibility complex class I antigen only during a neonatal period but not during adulthood. Blockade of T cell migration neonatally prevented tolerance induction. Thus, T cell trafficking through nonlymphoid tissues in the neonate is crucial for the establishment of self tolerance to sessile, skin-expressed antigens.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alferink, J -- Tafuri, A -- Vestweber, D -- Hallmann, R -- Hammerling, G J -- Arnold, B -- New York, N.Y. -- Science. 1998 Nov 13;282(5392):1338-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Tumor Immunology Program, German Cancer Research Center, 69120 Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9812902" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; Antigen Presentation ; Bone Marrow Transplantation ; CD8-Positive T-Lymphocytes/*immunology ; Cell Movement ; Graft Rejection ; H-2 Antigens/*immunology ; Keratinocytes/immunology ; Mice ; Mice, Transgenic ; Neoplasm Transplantation ; Neoplasms, Experimental/immunology ; Self Tolerance/*immunology ; Skin/*immunology ; Skin Transplantation ; T-Lymphocytes/*immunology ; Thymus Gland/immunology ; Transplantation Chimera
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 23
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    Reovirus therapy of tumors with activated Ras pathway (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-11-13
    Description: Human reovirus requires an activated Ras signaling pathway for infection of cultured cells. To investigate whether this property can be exploited for cancer therapy, severe combined immune deficient mice bearing tumors established from v-erbB-transformed murine NIH 3T3 cells or human U87 glioblastoma cells were treated with the virus. A single intratumoral injection of virus resulted in regression of tumors in 65 to 80 percent of the mice. Treatment of immune-competent C3H mice bearing tumors established from ras-transformed C3H-10T1/2 cells also resulted in tumor regression, although a series of injections were required. These results suggest that, with further work, reovirus may have applicability in the treatment of cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coffey, M C -- Strong, J E -- Forsyth, P A -- Lee, P W -- New York, N.Y. -- Science. 1998 Nov 13;282(5392):1332-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Biology Research Group and Department of Microbiology and Infectious Diseases, University of Calgary Health Science Centre, Calgary, Alberta, T2N 4N1, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9812900" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; Antibodies, Viral/immunology ; Calcium-Calmodulin-Dependent Protein Kinases/metabolism ; Cell Line, Transformed ; Genes, erbB ; *Genes, ras ; Humans ; Male ; Mammalian orthoreovirus 3/immunology/*physiology ; Mice ; Mice, Inbred C3H ; Mice, SCID ; Neoplasm Transplantation ; Neoplasms, Experimental/metabolism/pathology/*therapy/virology ; Signal Transduction ; Tumor Cells, Cultured ; Virus Replication ; ras Proteins/*metabolism
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  • 24
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    Bone marrow cells may provide muscle power (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-03-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, E -- New York, N.Y. -- Science. 1998 Mar 6;279(5356):1456.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9508720" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Marrow Cells/cytology/*physiology ; Bone Marrow Transplantation ; Cell Differentiation ; Humans ; Mice ; Mice, Transgenic ; Muscle, Skeletal/cytology/pathology/*physiology ; Muscular Dystrophies/pathology/*therapy ; Muscular Dystrophy, Animal/pathology/therapy ; *Regeneration ; Stem Cells/*physiology ; Stromal Cells/physiology
    Print ISSN: 0036-8075
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  • 25
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    Cancer treatment by targeted drug delivery to tumor vasculature in a mouse model (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-02-07
    Description: In vivo selection of phage display libraries was used to isolate peptides that home specifically to tumor blood vessels. When coupled to the anticancer drug doxorubicin, two of these peptides-one containing an alphav integrin-binding Arg-Gly-Asp motif and the other an Asn-Gly-Arg motif-enhanced the efficacy of the drug against human breast cancer xenografts in nude mice and also reduced its toxicity. These results indicate that it may be possible to develop targeted chemotherapy strategies that are based on selective expression of receptors in tumor vasculature.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arap, W -- Pasqualini, R -- Ruoslahti, E -- CA30199/CA/NCI NIH HHS/ -- CA62042/CA/NCI NIH HHS/ -- CA74238-01/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1998 Jan 16;279(5349):377-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Research Center, The Burnham Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9430587" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/metabolism ; Antineoplastic Agents/*administration & dosage/therapeutic use/toxicity ; Bacteriophages ; Coronary Vessels/drug effects ; Doxorubicin/*administration & dosage/*analogs & ; derivatives/metabolism/therapeutic use/toxicity ; *Drug Carriers ; Heart/drug effects ; Humans ; Integrin alphaV ; Integrins/metabolism ; Liver/blood supply/drug effects ; Mice ; Mice, Nude ; Neoplasm Transplantation ; Neoplasms, Experimental/*blood supply/*drug therapy/pathology ; Oligopeptides/*administration & dosage/metabolism/therapeutic use/toxicity ; Peptide Library ; Random Allocation ; Transplantation, Heterologous ; Tumor Cells, Cultured
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  • 26
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    An essential role for ectodomain shedding in mammalian development (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-11-13
    Description: The ectodomains of numerous proteins are released from cells by proteolysis to yield soluble intercellular regulators. The responsible protease, tumor necrosis factor-alpha converting enzyme (TACE), has been identified only in the case when tumor necrosis factor-alpha (TNFalpha) is released. Analyses of cells lacking this metalloproteinase-disintegrin revealed an expanded role for TACE in the processing of other cell surface proteins, including a TNF receptor, the L-selectin adhesion molecule, and transforming growth factor-alpha (TGFalpha). The phenotype of mice lacking TACE suggests an essential role for soluble TGFalpha in normal development and emphasizes the importance of protein ectodomain shedding in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peschon, J J -- Slack, J L -- Reddy, P -- Stocking, K L -- Sunnarborg, S W -- Lee, D C -- Russell, W E -- Castner, B J -- Johnson, R S -- Fitzner, J N -- Boyce, R W -- Nelson, N -- Kozlosky, C J -- Wolfson, M F -- Rauch, C T -- Cerretti, D P -- Paxton, R J -- March, C J -- Black, R A -- CA43793/CA/NCI NIH HHS/ -- DK53804/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1998 Nov 13;282(5392):1281-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Immunex Corporation, Seattle, WA 98101, USA. peschon@immunex.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9812885" target="_blank"〉PubMed〈/a〉
    Keywords: ADAM Proteins ; Amino Acid Sequence ; Animals ; Catalytic Domain ; Cell Membrane/*metabolism ; Cells, Cultured ; Crosses, Genetic ; *Embryonic and Fetal Development ; L-Selectin/metabolism ; Ligands ; Membrane Proteins/*metabolism ; Metalloendopeptidases/chemistry/genetics/*metabolism ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Mutation ; Phenotype ; Protein Processing, Post-Translational ; Receptors, Tumor Necrosis Factor/metabolism ; Transforming Growth Factor alpha/metabolism ; Tumor Necrosis Factor-alpha/*metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 27
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    Increased vascularization in mice overexpressing angiopoietin-1 (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-10-17
    Description: The angiopoietins and members of the vascular endothelial growth factor (VEGF) family are the only growth factors thought to be largely specific for vascular endothelial cells. Targeted gene inactivation studies in mice have shown that VEGF is necessary for the early stages of vascular development and that angiopoietin-1 is required for the later stages of vascular remodeling. Here it is shown that transgenic overexpression of angiopoietin-1 in the skin of mice produces larger, more numerous, and more highly branched vessels. These results raise the possibility that angiopoietins can be used, alone or in combination with VEGF, to promote therapeutic angiogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Suri, C -- McClain, J -- Thurston, G -- McDonald, D M -- Zhou, H -- Oldmixon, E H -- Sato, T N -- Yancopoulos, G D -- HL-24136/HL/NHLBI NIH HHS/ -- HL-59157/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1998 Oct 16;282(5388):468-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9774272" target="_blank"〉PubMed〈/a〉
    Keywords: Angiopoietin-1 ; Animals ; Capillaries/anatomy & histology/ultrastructure ; Endothelial Growth Factors/genetics/physiology ; Endothelium, Vascular/ultrastructure ; Gene Expression ; Keratinocytes/metabolism ; Lymphokines/genetics/physiology ; Membrane Glycoproteins/genetics/*physiology ; Mice ; Mice, Transgenic ; *Neovascularization, Physiologic ; Skin/*blood supply/metabolism ; Transgenes ; Vascular Endothelial Growth Factor A ; Vascular Endothelial Growth Factors ; Venules/anatomy & histology/ultrastructure
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    IEX-1L, an apoptosis inhibitor involved in NF-kappaB-mediated cell survival (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-08-14
    Description: Transcription factors of the nuclear factor-kappaB/rel (NF-kappaB) family may be important in cell survival by regulating unidentified, anti-apoptotic genes. One such gene that protects cells from apoptosis induced by Fas or tumor necrosis factor type alpha (TNF), IEX-1L, is described here. Its transcription induced by TNF was decreased in cells with defective NF-kappaB activation, rendering them sensitive to TNF-induced apoptosis, which was abolished by transfection with IEX-1L. In support, overexpression of antisense IEX-1L partially blocked TNF-induced expression of IEX-1L and sensitized normal cells to killing. This study demonstrates a key role of IEX-1L in cellular resistance to TNF-induced apoptosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wu, M X -- Ao, Z -- Prasad, K V -- Wu, R -- Schlossman, S F -- AI12069/AI/NIAID NIH HHS/ -- P30AI28691/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1998 Aug 14;281(5379):998-1001.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Tumor Immunology, Dana-Farber Cancer Institute, and the Department of Medicine, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9703517" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD95/physiology ; Apoptosis/genetics/*physiology ; Apoptosis Regulatory Proteins ; Cell Line ; Cell Survival ; Cloning, Molecular ; DNA, Antisense/genetics ; Gene Expression Regulation ; Genetic Vectors ; Humans ; Immediate-Early Proteins/genetics/*physiology ; Jurkat Cells ; Membrane Glycoproteins/genetics/*physiology ; Membrane Proteins ; Mice ; NF-kappa B/*physiology ; *Neoplasm Proteins ; Transfection ; Tumor Necrosis Factor-alpha/physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Cryopreservation. A Frankenstein experiment (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-09-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sikorski, R -- Peters, R -- New York, N.Y. -- Science. 1998 Aug 21;281(5380):1163-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9735033" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Fertilization ; *Freeze Drying ; Male ; Mice ; Micromanipulation ; Oocytes/physiology ; Semen Preservation/*methods ; Sperm Head/*physiology
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  • 30
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    Role of MEKK1 in cell survival and activation of JNK and ERK pathways defined by targeted gene disruption (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-12-04
    Description: Targeted disruption of the gene encoding MEK kinase 1 (MEKK1), a mitogen-activated protein kinase (MAPK) kinase kinase, defined its function in the regulation of MAPK pathways and cell survival. MEKK1(-/-) embryonic stem cells from mice had lost or altered responses of the c-Jun amino-terminal kinase (JNK) to microtubule disruption and cold stress but activated JNK normally in response to heat shock, anisomycin, and ultraviolet irradiation. Activation of JNK was lost and that of extracellular signal-regulated protein kinase (ERK) was diminished in response to hyperosmolarity and serum factors in MEKK1(-/-) cells. Loss of MEKK1 expression resulted in a greater apoptotic response of cells to hyperosmolarity and microtubule disruption. When activated by specific stresses that alter cell shape and the cytoskeleton, MEKK1 signals to protect cells from apoptosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yujiri, T -- Sather, S -- Fanger, G R -- Johnson, G L -- DK37871/DK/NIDDK NIH HHS/ -- GM30324/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1998 Dec 4;282(5395):1911-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Molecular Signal Transduction, Division of Basic Sciences, National Jewish Medical and Research Center, Denver, CO 80206, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9836645" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anisomycin/pharmacology ; Apoptosis ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Cell Line ; Cell Size ; *Cell Survival ; Enzyme Activation ; Gene Targeting ; JNK Mitogen-Activated Protein Kinases ; Lysophospholipids/pharmacology ; *MAP Kinase Kinase 4 ; *MAP Kinase Kinase Kinase 1 ; Mice ; *Mitogen-Activated Protein Kinase Kinases ; *Mitogen-Activated Protein Kinases ; Nocodazole/pharmacology ; Osmolar Concentration ; Phosphorylation ; Protein-Serine-Threonine Kinases/genetics/*metabolism ; Protein-Tyrosine Kinases/metabolism ; Recombinant Proteins/metabolism ; Stem Cells ; Temperature ; Transfection ; Ultraviolet Rays
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Role of the CLOCK protein in the mammalian circadian mechanism (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-06-11
    Description: The mouse Clock gene encodes a bHLH-PAS protein that regulates circadian rhythms and is related to transcription factors that act as heterodimers. Potential partners of CLOCK were isolated in a two-hybrid screen, and one, BMAL1, was coexpressed with CLOCK and PER1 at known circadian clock sites in brain and retina. CLOCK-BMAL1 heterodimers activated transcription from E-box elements, a type of transcription factor-binding site, found adjacent to the mouse per1 gene and from an identical E-box known to be important for per gene expression in Drosophila. Mutant CLOCK from the dominant-negative Clock allele and BMAL1 formed heterodimers that bound DNA but failed to activate transcription. Thus, CLOCK-BMAL1 heterodimers appear to drive the positive component of per transcriptional oscillations, which are thought to underlie circadian rhythmicity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gekakis, N -- Staknis, D -- Nguyen, H B -- Davis, F C -- Wilsbacher, L D -- King, D P -- Takahashi, J S -- Weitz, C J -- New York, N.Y. -- Science. 1998 Jun 5;280(5369):1564-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Harvard Medical School, Boston MA 02115, USA. 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9616112" target="_blank"〉PubMed〈/a〉
    Keywords: ARNTL Transcription Factors ; Animals ; Basic Helix-Loop-Helix Transcription Factors ; Biological Clocks ; CLOCK Proteins ; Cell Cycle Proteins ; Circadian Rhythm/genetics/*physiology ; Cloning, Molecular ; Cricetinae ; DNA/metabolism ; Dimerization ; Feedback ; Gene Expression ; Helix-Loop-Helix Motifs ; Male ; Mesocricetus ; Mice ; Mutation ; Nuclear Proteins/*genetics/metabolism ; Period Circadian Proteins ; Promoter Regions, Genetic ; Retina/metabolism ; Suprachiasmatic Nucleus/metabolism ; Trans-Activators/genetics/*metabolism ; Transcription Factors/genetics/*metabolism ; *Transcriptional Activation
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    Fertilization defects in sperm from mice lacking fertilin beta (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-09-22
    Description: Fertilin, a member of the ADAM family, is found on the plasma membrane of mammalian sperm. Sperm from mice lacking fertilin beta were shown to be deficient in sperm-egg membrane adhesion, sperm-egg fusion, migration from the uterus into the oviduct, and binding to the egg zona pellucida. Egg activation was unaffected. The results are consistent with a direct role of fertilin in sperm-egg plasma membrane interaction. Fertilin could also have a direct role in sperm-zona binding or oviduct migration; alternatively, the effects on these functions could result from the absence of fertilin activity during spermatogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cho, C -- Bunch, D O -- Faure, J E -- Goulding, E H -- Eddy, E M -- Primakoff, P -- Myles, D G -- HD16580/HD/NICHD NIH HHS/ -- U54HD29125/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1998 Sep 18;281(5384):1857-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Molecular and Cellular Biology, University of California, Davis, CA 95616, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9743500" target="_blank"〉PubMed〈/a〉
    Keywords: ADAM Proteins ; Animals ; Calcium/metabolism ; Cell Adhesion ; Cell Membrane/physiology ; Fallopian Tubes ; Female ; Male ; Membrane Fusion ; Membrane Glycoproteins/genetics/metabolism/*physiology ; Metalloendopeptidases/genetics/metabolism/*physiology ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Ovum/physiology ; Sperm Capacitation ; *Sperm-Ovum Interactions ; Spermatogenesis ; Spermatozoa/chemistry/*physiology ; Zona Pellucida/physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 33
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    CBP: a signal-regulated transcriptional coactivator controlled by nuclear calcium and CaM kinase IV (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-09-04
    Description: Recruitment of the coactivator, CREB binding protein (CBP), by signal-regulated transcription factors, such as CREB [adenosine 3', 5'-monophosphate (cAMP) response element binding protein], is critical for stimulation of gene expression. The mouse pituitary cell line AtT20 was used to show that the CBP recruitment step (CREB phosphorylation on serine-133) can be uncoupled from CREB/CBP-activated transcription. CBP was found to contain a signal-regulated transcriptional activation domain that is controlled by nuclear calcium and calcium/calmodulin-dependent (CaM) protein kinase IV and by cAMP. Cytoplasmic calcium signals that stimulate the Ras mitogen-activated protein kinase signaling cascade or expression of the activated form of Ras provided the CBP recruitment signal but did not increase CBP activity and failed to activate CREB- and CBP-mediated transcription. These results identify CBP as a signal-regulated transcriptional coactivator and define a regulatory role for nuclear calcium and cAMP in CBP-dependent gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chawla, S -- Hardingham, G E -- Quinn, D R -- Bading, H -- New York, N.Y. -- Science. 1998 Sep 4;281(5382):1505-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council, Laboratory of Molecular Biology, Hills Road, Cambridge CB2 2QH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9727976" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CREB-Binding Protein ; Calcium/*metabolism ; Calcium Channels/metabolism ; Calcium-Calmodulin-Dependent Protein Kinase Type 2 ; Calcium-Calmodulin-Dependent Protein Kinase Type 4 ; Calcium-Calmodulin-Dependent Protein Kinases/antagonists & inhibitors/*metabolism ; Cell Line ; Cell Nucleus/*metabolism ; Cyclic AMP/metabolism ; Cyclic AMP Response Element-Binding Protein/metabolism ; Cytoplasm/metabolism ; Genes, Reporter ; Mice ; Models, Genetic ; Nuclear Proteins/*metabolism ; Phosphorylation ; Phosphoserine/metabolism ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; Trans-Activators/*metabolism ; Transcription, Genetic ; *Transcriptional Activation ; ras Proteins/metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 34
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    Autophosphorylation at Thr286 of the alpha calcium-calmodulin kinase II in LTP and learning (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-02-28
    Description: The calcium-calmodulin-dependent kinase II (CaMKII) is required for hippocampal long-term potentiation (LTP) and spatial learning. In addition to its calcium-calmodulin (CaM)-dependent activity, CaMKII can undergo autophosphorylation, resulting in CaM-independent activity. A point mutation was introduced into the alphaCaMKII gene that blocked the autophosphorylation of threonine at position 286 (Thr286) of this kinase without affecting its CaM-dependent activity. The mutant mice had no N-methyl-D-aspartate receptor-dependent LTP in the hippocampal CA1 area and showed no spatial learning in the Morris water maze. Thus, the autophosphorylation of alphaCaMKII at Thr286 appears to be required for LTP and learning.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Giese, K P -- Fedorov, N B -- Filipkowski, R K -- Silva, A J -- AG13622/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 1998 Feb 6;279(5352):870-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9452388" target="_blank"〉PubMed〈/a〉
    Keywords: 2-Amino-5-phosphonovalerate/pharmacology ; 6-Cyano-7-nitroquinoxaline-2,3-dione/pharmacology ; Animals ; Calcium-Calmodulin-Dependent Protein Kinase Type 2 ; Calcium-Calmodulin-Dependent Protein Kinases/genetics/*metabolism ; Calmodulin/metabolism ; Gene Targeting ; Hippocampus/metabolism/*physiology ; *Long-Term Potentiation/drug effects ; *Maze Learning ; Mice ; Mice, Inbred C57BL ; Mice, Mutant Strains ; Patch-Clamp Techniques ; Phosphorylation ; Phosphothreonine/metabolism ; Picrotoxin/pharmacology ; Point Mutation ; Pyramidal Cells/*physiology ; Receptors, N-Methyl-D-Aspartate/physiology ; Synaptic Transmission
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    Training viruses to attack cancers (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-12-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, E -- New York, N.Y. -- Science. 1998 Nov 13;282(5392):1244-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9867627" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Division ; Clinical Trials as Topic ; Combined Modality Therapy ; *Genes, p53 ; *Genes, ras ; Humans ; Mice ; Mutation ; Neoplasms/genetics/pathology/*therapy/virology ; *Virus Physiological Phenomena ; Virus Replication
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 36
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    Axonal swellings and degeneration in mice lacking the major proteolipid of myelin (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-06-11
    Description: Glial cells produce myelin and contribute to axonal morphology in the nervous system. Two myelin membrane proteolipids, PLP and DM20, were shown to be essential for the integrity of myelinated axons. In the absence of PLP-DM20, mice assembled compact myelin sheaths but subsequently developed widespread axonal swellings and degeneration, associated predominantly with small-caliber nerve fibers. Similar swellings were absent in dysmyelinated shiverer mice, which lack myelin basic protein (MBP), but recurred in MBP*PLP double mutants. Thus, fiber degeneration, which was probably secondary to impaired axonal transport, could indicate that myelinated axons require local oligodendroglial support.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Griffiths, I -- Klugmann, M -- Anderson, T -- Yool, D -- Thomson, C -- Schwab, M H -- Schneider, A -- Zimmermann, F -- McCulloch, M -- Nadon, N -- Nave, K A -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1998 Jun 5;280(5369):1610-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Applied Neurobiology Group, Department of Veterinary Clinical Studies, University of Glasgow, Glasgow G61 1QH, Scotland, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9616125" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axonal Transport ; Axons/*physiology/*ultrastructure ; Cell Communication ; Central Nervous System/*ultrastructure ; Female ; Mice ; Mice, Neurologic Mutants ; Models, Neurological ; Motor Activity ; Myelin Proteolipid Protein/analysis/genetics/*physiology ; Myelin Sheath/chemistry/physiology/ultrastructure ; Nerve Degeneration/*pathology ; *Nerve Tissue Proteins ; Oligodendroglia/physiology ; Optic Nerve/ultrastructure ; Organelles/ultrastructure ; Spinal Cord/ultrastructure ; Transgenes
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    Requirement for IL-13 independently of IL-4 in experimental asthma (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-12-18
    Description: The pathogenesis of asthma reflects, in part, the activity of T cell cytokines. Murine models support participation of interleukin-4 (IL-4) and the IL-4 receptor in asthma. Selective neutralization of IL-13, a cytokine related to IL-4 that also binds to the alpha chain of the IL-4 receptor, ameliorated the asthma phenotype, including airway hyperresponsiveness, eosinophil recruitment, and mucus overproduction. Administration of either IL-13 or IL-4 conferred an asthma-like phenotype to nonimmunized T cell-deficient mice by an IL-4 receptor alpha chain-dependent pathway. This pathway may underlie the genetic associations of asthma with both the human 5q31 locus and the IL-4 receptor.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3897229/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3897229/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grunig, G -- Warnock, M -- Wakil, A E -- Venkayya, R -- Brombacher, F -- Rennick, D M -- Sheppard, D -- Mohrs, M -- Donaldson, D D -- Locksley, R M -- Corry, D B -- 03344/PHS HHS/ -- 47412/PHS HHS/ -- K08 HL003344/HL/NHLBI NIH HHS/ -- T32 HL07185/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1998 Dec 18;282(5397):2261-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, San Francisco General Hospital, University of California San Francisco, San Francisco, CA 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9856950" target="_blank"〉PubMed〈/a〉
    Keywords: Adoptive Transfer ; Allergens/immunology ; Animals ; Asthma/genetics/*immunology/pathology/physiopathology ; Bronchial Hyperreactivity ; Bronchoalveolar Lavage Fluid/cytology ; Chromosomes, Human, Pair 5 ; Goblet Cells/pathology ; Humans ; Immunoglobulin Fc Fragments ; Interleukin-13/antagonists & inhibitors/genetics/pharmacology/*physiology ; Interleukin-13 Receptor alpha1 Subunit ; Interleukin-4/genetics/pharmacology/*physiology ; Mice ; Mice, Inbred BALB C ; Ovalbumin/immunology ; Phenotype ; Receptors, Interleukin/genetics/immunology/physiology ; Receptors, Interleukin-13 ; Receptors, Interleukin-4/genetics/physiology ; Recombinant Fusion Proteins/pharmacology ; Th2 Cells/immunology
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  • 38
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    Prevention of cardiac hypertrophy in mice by calcineurin inhibition (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-09-11
    Description: Hypertrophic cardiomyopathy (HCM) is an inherited form of heart disease that affects 1 in 500 individuals. Here it is shown that calcineurin, a calcium-regulated phosphatase, plays a critical role in the pathogenesis of HCM. Administration of the calcineurin inhibitors cyclosporin and FK506 prevented disease in mice that were genetically predisposed to develop HCM as a result of aberrant expression of tropomodulin, myosin light chain-2, or fetal beta-tropomyosin in the heart. Cyclosporin had a similar effect in a rat model of pressure-overload hypertrophy. These results suggest that calcineurin inhibitors merit investigation as potential therapeutics for certain forms of human heart disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sussman, M A -- Lim, H W -- Gude, N -- Taigen, T -- Olson, E N -- Robbins, J -- Colbert, M C -- Gualberto, A -- Wieczorek, D F -- Molkentin, J D -- HL58224-01/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1998 Sep 11;281(5383):1690-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Cardiovascular Biology, Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45229, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9733519" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcineurin/metabolism ; *Calcineurin Inhibitors ; Calcium/metabolism ; *Cardiac Myosins ; Cardiomegaly/metabolism/pathology/*prevention & control ; Cardiomyopathy, Dilated/pathology/*prevention & control ; Cardiomyopathy, Hypertrophic/genetics/metabolism/pathology/*prevention & control ; Carrier Proteins/genetics ; Cyclosporine/*pharmacology ; Female ; Mice ; Mice, Transgenic ; *Microfilament Proteins ; Models, Cardiovascular ; Myocardium/*metabolism/pathology ; Myosin Light Chains/genetics/metabolism ; Rats ; Signal Transduction ; Tacrolimus/*pharmacology ; Tropomodulin ; Tropomyosin/genetics
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 39
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    Regulation of nerve growth mediated by inositol 1,4,5-trisphosphate receptors in growth cones (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-11-30
    Description: The inositol 1,4,5-trisphosphate (IP3) receptor (IP3R) acts as a Ca2+ release channel on internal Ca2+ stores. Type 1 IP3R (IP3R1) is enriched in growth cones of neurons in chick dorsal root ganglia. Depletion of internal Ca2+ stores and inhibition of IP3 signaling with drugs inhibited neurite extension. Microinjection of heparin, a competitive IP3R blocker, induced neurite retraction. Acute localized loss of function of IP3R1 in the growth cone induced by chromophore-assisted laser inactivation resulted in growth arrest and neurite retraction. IP3-induced Ca2+ release in growth cones appears to have a crucial role in control of nerve growth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Takei, K -- Shin, R M -- Inoue, T -- Kato, K -- Mikoshiba, K -- New York, N.Y. -- Science. 1998 Nov 27;282(5394):1705-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Calciosignal Net Project, Exploratory Research for Advanced Technology (ERATO), Japan Science and Technology Corporation (JST), Bunkyo-Ku, Tokyo 113-0021, Japan. kohtaro@ims.u-tokyo.ac.jp〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9831561" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/metabolism ; Calcium Channels/*metabolism ; Calcium Signaling ; Cells, Cultured ; Cerebellum/metabolism ; Chick Embryo ; Ganglia, Spinal/cytology ; Growth Cones/*metabolism ; Heparin/pharmacology ; Inositol 1,4,5-Trisphosphate/*metabolism ; Inositol 1,4,5-Trisphosphate Receptors ; Lasers ; Lithium Chloride/pharmacology ; Mice ; Microscopy, Video ; Microsomes/metabolism ; Microtubules/metabolism ; Neurites/drug effects/*physiology ; Pseudopodia/drug effects/physiology ; Receptors, Cytoplasmic and Nuclear/*metabolism ; Signal Transduction ; Thapsigargin/pharmacology
    Print ISSN: 0036-8075
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    p53-independent role of MDM2 in TGF-beta1 resistance (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-12-18
    Description: Transforming growth factor-beta (TGF-beta) inhibits cell proliferation, and acquisition of TGF-beta resistance has been linked to tumorigenesis. A genetic screen was performed to identify complementary DNAs that abrogated TGF-beta sensitivity in mink lung epithelial cells. Ectopic expression of murine double minute 2 rescued TGF-beta-induced growth arrest in a p53-independent manner by interference with retinoblastoma susceptibility gene product (Rb)/E2F function. In human breast tumor cells, increased MDM2 expression levels correlated with TGF-beta resistance. Thus, MDM2 may confer TGF-beta resistance in a subset of tumors and may promote tumorigenesis by interference with two independent tumor suppressors, p53 and Rb.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sun, P -- Dong, P -- Dai, K -- Hannon, G J -- Beach, D -- New York, N.Y. -- Science. 1998 Dec 18;282(5397):2270-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY 11724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9856953" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Breast Neoplasms/genetics/metabolism/pathology ; *Carrier Proteins ; *Cell Cycle Proteins ; *Cell Division ; Cell Line ; Cell Transformation, Neoplastic ; *DNA-Binding Proteins ; Drug Resistance, Neoplasm ; E2F Transcription Factors ; Gene Expression ; Genes, Retinoblastoma ; Genes, p53 ; Genetic Vectors ; Humans ; Mice ; Mink ; *Nuclear Proteins ; Phosphorylation ; Proto-Oncogene Proteins/genetics/*physiology ; Proto-Oncogene Proteins c-mdm2 ; Retinoblastoma Protein/metabolism ; Retinoblastoma-Binding Protein 1 ; Signal Transduction ; Transcription Factor DP1 ; Transcription Factors/genetics/metabolism ; Transcription, Genetic ; Transforming Growth Factor beta/*pharmacology/physiology ; Tumor Cells, Cultured ; Tumor Suppressor Protein p53/*physiology
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    Inhibition of cell migration, spreading, and focal adhesions by tumor suppressor PTEN (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-06-11
    Description: The tumor suppressor PTEN is a phosphatase with sequence similarity to the cytoskeletal protein tensin. Here the cellular roles of PTEN were investigated. Overexpression of PTEN inhibited cell migration, whereas antisense PTEN enhanced migration. Integrin-mediated cell spreading and the formation of focal adhesions were down-regulated by wild-type PTEN but not by PTEN with an inactive phosphatase domain. PTEN interacted with the focal adhesion kinase FAK and reduced its tyrosine phosphorylation. Overexpression of FAK partially antagonized the effects of PTEN. Thus, PTEN phosphatase may function as a tumor suppressor by negatively regulating cell interactions with the extracellular matrix.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tamura, M -- Gu, J -- Matsumoto, K -- Aota, S -- Parsons, R -- Yamada, K M -- New York, N.Y. -- Science. 1998 Jun 5;280(5369):1614-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Craniofacial Developmental Biology and Regeneration Branch, National Institute of Dental Research, National Institutes of Health, Bethesda, MD 20892-4370, USA. mtamura@yoda.nidr.nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9616126" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; *Cell Adhesion ; Cell Adhesion Molecules/metabolism ; Cell Line ; *Cell Movement ; Cell Size ; Concanavalin A ; Down-Regulation ; Ecdysone/pharmacology ; Fibronectins ; Focal Adhesion Kinase 1 ; Focal Adhesion Protein-Tyrosine Kinases ; Genes, Tumor Suppressor ; Humans ; Integrins/physiology ; Mice ; Mutation ; PTEN Phosphohydrolase ; *Phosphoric Monoester Hydrolases ; Phosphorylation ; Polylysine ; Protein Tyrosine Phosphatases/genetics/metabolism/pharmacology/*physiology ; Protein-Tyrosine Kinases/metabolism ; Recombinant Proteins/pharmacology ; Signal Transduction ; Transfection ; Tumor Cells, Cultured ; *Tumor Suppressor Proteins
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    Uncoupling of immune complex formation and kidney damage in autoimmune glomerulonephritis (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-03-07
    Description: The generation of autoantibody and subsequent tissue deposition of immune complexes (IC) is thought to trigger the pathogenic consequences of systemic autoimmune disease. Modulation of the autoantibody response disrupts pathogenesis by preventing the formation of ICs; however, uncoupling IC formation from subsequent inflammatory responses seems unlikely because of the apparent complexity of the IC-triggered inflammatory cascade. However, the disruption of a single gene, which encodes the gamma chain of the Fc receptor, was found to achieve this uncoupling in a spontaneous model of lupus nephritis, the New Zealand Black/New Zealand White (NZB/NZW) mouse. Gamma chain-deficient NZB/NZW mice generated and deposited IC and activated complement, but were protected from severe nephritis, thus defining another potential pathway for therapeutic intervention in autoimmune disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clynes, R -- Dumitru, C -- Ravetch, J V -- New York, N.Y. -- Science. 1998 Feb 13;279(5353):1052-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9461440" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Antinuclear/blood ; Antigen-Antibody Complex/blood/*immunology ; *Complement Activation ; Complement System Proteins/analysis ; Crosses, Genetic ; Disease Models, Animal ; Glomerular Mesangium/immunology/pathology ; Kidney Glomerulus/*immunology/*pathology ; Lupus Nephritis/*immunology/pathology ; Mice ; Mice, Inbred C57BL ; Mice, Inbred Strains ; Receptors, IgG/genetics/*immunology
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    Impairment of mycobacterial immunity in human interleukin-12 receptor deficiency (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-06-20
    Description: In humans, interferon gamma (IFN-gamma) receptor deficiency leads to a predisposition to mycobacterial infections and impairs the formation of mature granulomas. Interleukin-12 (IL-12) receptor deficiency was found in otherwise healthy individuals with mycobacterial infections. Mature granulomas were seen, surrounded by T cells and centered with epithelioid and multinucleated giant cells, yet reduced IFN-gamma concentrations were found to be secreted by activated natural killer and T cells. Thus, IL-12-dependent IFN-gamma secretion in humans seems essential in the control of mycobacterial infections, despite the formation of mature granulomas due to IL-12-independent IFN-gamma secretion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Altare, F -- Durandy, A -- Lammas, D -- Emile, J F -- Lamhamedi, S -- Le Deist, F -- Drysdale, P -- Jouanguy, E -- Doffinger, R -- Bernaudin, F -- Jeppsson, O -- Gollob, J A -- Meinl, E -- Segal, A W -- Fischer, A -- Kumararatne, D -- Casanova, J L -- New York, N.Y. -- Science. 1998 May 29;280(5368):1432-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉INSERM U429, Hopital Necker-Enfants Malades, Paris 75015, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9603732" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cytotoxicity, Immunologic ; Female ; Granuloma/immunology ; Humans ; Hypersensitivity, Delayed ; Interferon-gamma/biosynthesis/immunology/secretion ; Interleukin-12/*immunology ; Killer Cells, Natural/immunology ; Lymphocyte Activation ; Male ; Mice ; Mice, Knockout ; Mutation ; Mycobacterium avium-intracellulare Infection/*immunology ; *Mycobacterium bovis ; Pedigree ; Receptors, Interferon/genetics/immunology ; Receptors, Interleukin/deficiency/*genetics ; Receptors, Interleukin-12 ; T-Lymphocytes/immunology ; Tuberculosis/*immunology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    How embryos may avoid immune attack (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-09-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gura, T -- New York, N.Y. -- Science. 1998 Aug 21;281(5380):1122-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9735025" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Embryo, Mammalian/*immunology ; Enzyme Inhibitors/pharmacology ; Female ; Humans ; *Immune Tolerance ; Male ; Mice ; Placenta/enzymology ; Pregnancy ; T-Lymphocytes/*immunology/metabolism ; Trophoblasts/*enzymology ; Tryptophan/analogs & derivatives/*metabolism/pharmacology ; Tryptophan Oxygenase/antagonists & inhibitors/*metabolism
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    Hyperinnervation of neuromuscular junctions caused by GDNF overexpression in muscle (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-03-28
    Description: Overexpression of glial cell line-derived neurotrophic factor (GDNF) by muscle greatly increased the number of motor axons innervating neuromuscular junctions in neonatal mice. The extent of hyperinnervation correlated with the amount of GDNF expressed in four transgenic lines. Overexpression of GDNF by glia and overexpression of neurotrophin-3 and neurotrophin-4 in muscle did not cause hyperinnervation. Thus, increased amounts of GDNF in postsynaptic target cells can regulate the number of innervating axons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nguyen, Q T -- Parsadanian, A S -- Snider, W D -- Lichtman, J W -- New York, N.Y. -- Science. 1998 Mar 13;279(5357):1725-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anatomy and Neurobiology, Washington University School of Medicine, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9497292" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/*physiology/ultrastructure ; Gene Expression Regulation ; Glial Cell Line-Derived Neurotrophic Factor ; Mice ; Mice, Transgenic ; Motor Neurons/*physiology/ultrastructure ; Muscle Contraction ; Muscle Fibers, Skeletal/*metabolism/ultrastructure ; Myogenin/genetics ; Nerve Growth Factors/genetics/physiology ; Nerve Tissue Proteins/*genetics/*physiology ; Neuroglia/metabolism ; Neuromuscular Junction/*ultrastructure ; Neuronal Plasticity ; Neurotrophin 3 ; Promoter Regions, Genetic ; Synapses/physiology ; Transgenes
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  • 46
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    Feedback inhibition of macrophage tumor necrosis factor-alpha production by tristetraprolin (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-08-14
    Description: Tumor necrosis factor-alpha (TNF-alpha) is a major mediator of both acute and chronic inflammatory responses in many diseases. Tristetraprolin (TTP), the prototype of a class of Cys-Cys-Cys-His (CCCH) zinc finger proteins, inhibited TNF-alpha production from macrophages by destabilizing its messenger RNA. This effect appeared to result from direct TTP binding to the AU-rich element of the TNF-alpha messenger RNA. TTP is a cytosolic protein in these cells, and its biosynthesis was induced by the same agents that stimulate TNF-alpha production, including TNF-alpha itself. These findings identify TTP as a component of a negative feedback loop that interferes with TNF-alpha production by destabilizing its messenger RNA. This pathway represents a potential target for anti-TNF-alpha therapies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carballo, E -- Lai, W S -- Blackshear, P J -- New York, N.Y. -- Science. 1998 Aug 14;281(5379):1001-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Office of Clinical Research and Laboratory of Signal Transduction, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9703499" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; Base Sequence ; Biological Transport ; Cell Line ; Cell Nucleus/metabolism ; Chick Embryo ; Cytosol/metabolism ; *DNA-Binding Proteins ; Feedback ; Gene Expression Regulation ; Humans ; *Immediate-Early Proteins ; Lipopolysaccharides/pharmacology ; Macrophages/*physiology ; Mice ; Mice, Knockout ; Proteins/*physiology ; RNA Probes ; RNA, Messenger/chemistry/genetics/metabolism ; Transfection ; Tristetraprolin ; Tumor Necrosis Factor-alpha/antagonists & inhibitors/*biosynthesis/genetics ; *Zinc Fingers
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    Partial hormone resistance in mice with disruption of the steroid receptor coactivator-1 (SRC-1) gene (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-04-16
    Description: The in vivo biological function of a steroid receptor coactivator was assessed in mice in which the SRC-1 gene was inactivated by gene targeting. Although in both sexes the homozygous mutants were viable and fertile, target organs such as uterus, prostate, testis, and mammary gland exhibited decreased growth and development in response to steroid hormones. Expression of RNA encoding TIF2, a member of the SRC-1 family, was increased in the SRC-1 null mutant, perhaps compensating partially for the loss of SRC-1 function in target tissues. The results indicate that SRC-1 mediates steroid hormone responses in vivo and that loss of its coactivator function results in partial resistance to hormone.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xu, J -- Qiu, Y -- DeMayo, F J -- Tsai, S Y -- Tsai, M J -- O'Malley, B W -- New York, N.Y. -- Science. 1998 Mar 20;279(5358):1922-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Baylor College of Medicine, Houston, TX 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9506940" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Drug Resistance ; Estradiol/blood/pharmacology ; Female ; Gene Targeting ; Genitalia, Male/drug effects/*growth & development ; Gonadal Steroid Hormones/*pharmacology ; Histone Acetyltransferases ; Male ; Mammary Glands, Animal/drug effects/*growth & development ; Mice ; Nuclear Receptor Coactivator 1 ; Nuclear Receptor Coactivator 2 ; Organ Size/drug effects ; Pregnancy ; Progesterone/blood/pharmacology ; Prostate/drug effects/growth & development ; Stem Cells ; Testis/drug effects/growth & development ; Testosterone/blood/pharmacology ; Transcription Factors/genetics/*physiology ; Uterus/drug effects/*growth & development
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    Solving the brain's energy crisis (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-06-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibbons, A -- New York, N.Y. -- Science. 1998 May 29;280(5368):1345-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9634409" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Brain/*anatomy & histology/growth & development/metabolism ; Digestive System/*anatomy & histology/metabolism ; *Energy Metabolism ; Female ; Genomic Imprinting ; Humans ; Lactation ; Male ; Maternal-Fetal Exchange ; Mice ; Placenta/metabolism ; Pregnancy
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    Visualization of specific B and T lymphocyte interactions in the lymph node (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-07-04
    Description: Early events in the humoral immune response were visualized in lymph nodes by simultaneous tracking of antigen-specific CD4 T and B cells after immunization. The T cells were initially activated in the T cell areas when the B cells were still randomly dispersed in the B cell-rich follicles. Both populations then migrated to the edges of the follicles and interacted there, resulting in CD154-dependent B cell proliferation and germinal center formation. These results provide visual documentation of cognate T-B cell interactions and localize them to the follicular border.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Garside, P -- Ingulli, E -- Merica, R R -- Johnson, J G -- Noelle, R J -- Jenkins, M K -- AI27998/AI/NIAID NIH HHS/ -- AI35296/AI/NIAID NIH HHS/ -- AI39614/AI/NIAID NIH HHS/ -- Wellcome Trust/United Kingdom -- etc. -- New York, N.Y. -- Science. 1998 Jul 3;281(5373):96-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of Glasgow, Department of Immunology, Western Infirmary, Glasgow, G11 6NT, United Kingdom.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9651253" target="_blank"〉PubMed〈/a〉
    Keywords: Adoptive Transfer ; Animals ; *Antibody Formation ; Antigen Presentation ; B-Lymphocytes/cytology/*immunology ; CD4-Positive T-Lymphocytes/cytology/*immunology ; CD40 Ligand ; Cell Movement ; Dendritic Cells/immunology ; Germinal Center/immunology ; Immunization ; Immunoglobulin M/analysis ; Lymph Nodes/cytology/*immunology ; *Lymphocyte Activation ; Membrane Glycoproteins/immunology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Mice, Transgenic ; Plasma Cells/immunology
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    Identification of two distinct mechanisms of phagocytosis controlled by different Rho GTPases (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-11-30
    Description: The complement and immunoglobulin receptors are the major phagocytic receptors involved during infection. However, only immunoglobulin-dependent uptake results in a respiratory burst and an inflammatory response in macrophages. Rho guanosine triphosphatases (molecular switches that control the organization of the actin cytoskeleton) were found to be essential for both types of phagocytosis. Two distinct mechanisms of phagocytosis were identified: Type I, used by the immunoglobulin receptor, is mediated by Cdc42 and Rac, and type II, used by the complement receptor, is mediated by Rho. These results suggest a molecular basis for the different biological consequences that are associated with phagocytosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Caron, E -- Hall, A -- New York, N.Y. -- Science. 1998 Nov 27;282(5394):1717-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council Laboratory for Molecular Cell Biology, Cancer Research Campaign Oncogene and Signal Transduction Group, and Department of Biochemistry, University College London, Gower Street, London WC1E 6BT, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9831565" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Actins/metabolism ; Animals ; Antigens, CD/*immunology/metabolism ; *Bacterial Proteins ; Bacterial Toxins/pharmacology ; COS Cells ; Cell Cycle Proteins/metabolism ; Cell Line ; Enzyme Activation ; Erythrocytes/immunology ; GTP Phosphohydrolases/*metabolism ; GTP-Binding Proteins/metabolism ; Macrophage-1 Antigen/*immunology/metabolism ; Macrophages/immunology ; Mice ; Opsonin Proteins ; *Phagocytosis ; Phagosomes/enzymology ; Receptors, IgG/*immunology/metabolism ; Transfection ; cdc42 GTP-Binding Protein ; rac GTP-Binding Proteins
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    The brain's normal function (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-05-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Laviano, A -- Rossi Fanelli, F -- Meguid, M M -- New York, N.Y. -- Science. 1998 Apr 24;280(5363):503.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9575090" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Appetite ; Hypothalamus/*physiology ; Mice ; Neuropeptide Y/*physiology ; Neurotransmitter Agents/physiology ; *Synaptic Transmission
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    10-gallon molecule stomps tumors (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-03-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adams, A -- New York, N.Y. -- Science. 1998 Feb 27;279(5355):1307-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9508706" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain Neoplasms/*radiotherapy ; Clinical Trials as Topic ; Gadolinium ; Humans ; Metalloporphyrins/chemical synthesis/pharmacokinetics/*therapeutic use ; Mice ; Neoplasms, Experimental/*radiotherapy ; *Radiation-Sensitizing Agents/chemical synthesis/pharmacokinetics
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    Abnormal hippocampal spatial representations in alphaCaMKIIT286A and CREBalphaDelta- mice (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-02-28
    Description: Hippocampal "place cells" fire selectively when an animal is in a specific location. The fine-tuning and stability of place cell firing was compared in two types of mutant mice with different long-term potentiation (LTP) and place learning impairments. Place cells from both mutants showed decreased spatial selectivity. Place cell stability was also deficient in both mutants and, consistent with the severities in their LTP and spatial learning deficits, was more affected in mice with a point mutation [threonine (T) at position 286 mutated to alanine (A)] in the alpha calmodulin kinase II (alphaCaMKIIT286A) than in mice deficient for the alpha and Delta isoforms of adenosine 3'5'-monophosphate-responsive element binding proteins (CREBalphaDelta-). Thus, LTP appears to be important for the fine tuning and stabilization of place cells, and these place cell properties may be necessary for spatial learning.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cho, Y H -- Giese, K P -- Tanila, H -- Silva, A J -- Eichenbaum, H -- AG13622/AG/NIA NIH HHS/ -- MH51570/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1998 Feb 6;279(5352):867-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychology, Boston University, Boston, MA 02215, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9452387" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium-Calmodulin-Dependent Protein Kinase Type 2 ; Calcium-Calmodulin-Dependent Protein Kinases/deficiency/genetics ; Cues ; Cyclic AMP Response Element-Binding Protein/genetics/metabolism ; Hippocampus/cytology/*physiology ; *Learning ; *Long-Term Potentiation ; Maze Learning ; Mice ; Mice, Inbred C57BL ; Mice, Mutant Strains ; Orientation ; Point Mutation ; Pyramidal Cells/physiology ; *Space Perception
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Hairy mice offer hope for baldness remedy (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-12-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, E -- New York, N.Y. -- Science. 1998 Nov 27;282(5394):1617,1619.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9867657" target="_blank"〉PubMed〈/a〉
    Keywords: Alopecia/therapy ; Animals ; Cytoskeletal Proteins/genetics/*physiology ; DNA-Binding Proteins/genetics/physiology ; Gene Expression Regulation ; Hair/*growth & development ; Hair Diseases/etiology ; Hair Follicle/*growth & development ; Humans ; Lymphoid Enhancer-Binding Factor 1 ; Male ; Mice ; Mice, Knockout ; Neoplasms/etiology ; *Trans-Activators ; Transcription Factors/genetics/physiology ; beta Catenin
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 55
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    Alopecia universalis associated with a mutation in the human hairless gene (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-02-21
    Description: There are several forms of hereditary human hair loss, known collectively as alopecias, the molecular bases of which are entirely unknown. A kindred with a rare, recessively inherited type of alopecia universalis was used to search for a locus by homozygosity mapping, and linkage was established in a 6-centimorgan interval on chromosome 8p12 (the logarithm of the odds favoring linkage score was 6.19). The human homolog of a murine gene, hairless, was localized in this interval by radiation hybrid mapping, and a missense mutation was found in affected individuals. Human hairless encodes a putative single zinc finger transcription factor protein with restricted expression in the brain and skin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ahmad, W -- Faiyaz ul Haque, M -- Brancolini, V -- Tsou, H C -- ul Haque, S -- Lam, H -- Aita, V M -- Owen, J -- deBlaquiere, M -- Frank, J -- Cserhalmi-Friedman, P B -- Leask, A -- McGrath, J A -- Peacocke, M -- Ahmad, M -- Ott, J -- Christiano, A M -- HG-00008/HG/NHGRI NIH HHS/ -- P30AR44535/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 1998 Jan 30;279(5351):720-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Dermatology, Columbia University, 630 West 168 Street, VC-15-526, New York, NY 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9445480" target="_blank"〉PubMed〈/a〉
    Keywords: Alopecia/*genetics ; Amino Acid Sequence ; Animals ; Brain/metabolism ; Chromosome Mapping ; Chromosomes, Human, Pair 8 ; DNA-Binding Proteins/genetics ; Female ; Forkhead Transcription Factors ; Gene Expression ; Genes, Recessive ; Homozygote ; Humans ; Male ; Mice ; Mice, Hairless/genetics ; Microsatellite Repeats ; Molecular Sequence Data ; Mutation ; Pedigree ; Proteins/chemistry/*genetics ; Rats ; Sequence Analysis, DNA ; Sequence Homology, Amino Acid ; Skin/metabolism ; Transcription Factors/genetics ; *Zinc Fingers
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Requirement for gammadelta T cells in allergic airway inflammation (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-06-20
    Description: The factors that contribute to allergic asthma are unclear but the resulting condition is considered a consequence of a type-2 T helper (TH2) cell response. In a model of pulmonary allergic inflammation, mice that lacked gammadelta T cells had decreases in specific immunoglobulin E (IgE) and IgG1 and pulmonary interleukin-5 (IL-5) release as well as in eosinophil and T cell infiltration compared with wild-type mice. These responses were restored by administration of IL-4 to gammadelta T cell-deficient mice during the primary immunization. Thus, gammadelta T cells are essential for inducing IL-4-dependent IgE and IgG1 responses and for TH2-mediated airway inflammation to peptidic antigens.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zuany-Amorim, C -- Ruffie, C -- Haile, S -- Vargaftig, B B -- Pereira, P -- Pretolani, M -- New York, N.Y. -- Science. 1998 May 22;280(5367):1265-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Unite de Pharmacologie Cellulaire, Unite Associee Institut Pasteur/INSERM U485, Paris, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9596580" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Asthma/*immunology ; Bronchi/immunology ; Bronchial Hyperreactivity/immunology ; Bronchoalveolar Lavage Fluid/immunology ; CD4-Positive T-Lymphocytes/immunology ; CD8-Positive T-Lymphocytes/immunology ; Crosses, Genetic ; Eosinophils/immunology ; Female ; Immunization ; Immunoglobulin E/blood ; Immunoglobulin G/blood ; Interferon-gamma/analysis/biosynthesis ; Interleukin-4/biosynthesis/immunology ; Interleukin-5/analysis/biosynthesis ; Lung/*immunology ; Male ; Mice ; Mice, Inbred BALB C ; Ovalbumin/immunology ; Receptors, Antigen, T-Cell, gamma-delta/*analysis ; T-Lymphocyte Subsets/*immunology ; Th2 Cells/*immunology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Requirement for the leukocyte-specific adapter protein SLP-76 for normal T cell development (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-07-17
    Description: The leukocyte-specific adapter molecule SLP-76 (Src homology 2 domain-containing leukocyte protein of 76 kilodaltons) is rapidly phosphorylated on tyrosine residues after receptor ligation in several hematopoietically derived cell types. Mice made deficient for SLP-76 expression contained no peripheral T cells as a result of an early block in thymopoiesis. Macrophage and natural killer cell compartments were intact in SLP-76-deficient mice, despite SLP-76 expression in these lineages in wild-type mice. Thus, the SLP-76 adapter protein is required for normal thymocyte development and plays a crucial role in translating signals mediated by pre-T cell receptors into distal biochemical events.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clements, J L -- Yang, B -- Ross-Barta, S E -- Eliason, S L -- Hrstka, R F -- Williamson, R A -- Koretzky, G A -- GM53256/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1998 Jul 17;281(5375):416-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Internal Medicine, University of Iowa College of Medicine, Iowa City, IA 52242, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9665885" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing ; Animals ; B-Lymphocytes/cytology/immunology ; Gene Targeting ; Immunoglobulin M/blood ; Killer Cells, Natural/cytology ; *Leukopoiesis ; Lymph Nodes/cytology ; Lymphocyte Activation ; Lymphocyte Count ; Macrophages/cytology ; Mice ; Mice, Inbred C57BL ; Phosphoproteins/genetics/*physiology ; Protein-Tyrosine Kinases/metabolism ; Receptors, Antigen, T-Cell/metabolism ; Signal Transduction ; Spleen/cytology ; T-Lymphocytes/*cytology ; Thymus Gland/cytology ; ZAP-70 Protein-Tyrosine Kinase
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Building a better aspirin (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-06-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, E -- New York, N.Y. -- Science. 1998 May 22;280(5367):1191-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9634399" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/prevention & control ; Animals ; Anti-Inflammatory Agents, Non-Steroidal/*chemical ; synthesis/chemistry/pharmacology ; Anticarcinogenic Agents ; Aspirin/*chemistry/pharmacology ; Cyclooxygenase 2 ; Cyclooxygenase 2 Inhibitors ; Cyclooxygenase Inhibitors/*chemical synthesis/chemistry/pharmacology ; *Drug Design ; Free Radicals/metabolism ; Humans ; Isoenzymes/*metabolism ; Membrane Proteins ; Mice ; Neoplasms/metabolism/prevention & control ; Prostaglandin-Endoperoxide Synthases/*metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 59
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    Identification of LFA-1 as a candidate autoantigen in treatment-resistant Lyme arthritis (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-07-31
    Description: Treatment-resistant Lyme arthritis is associated with immune reactivity to outer surface protein A (OspA) of Borrelia burgdorferi, the agent of Lyme disease, and the major histocompatibility complex class II allele DRB1*0401. The immunodominant epitope of OspA for T helper cells was identified. A homology search revealed a peptide from human leukocyte function-associated antigen-1 (hLFA-1) as a candidate autoantigen. Individuals with treatment-resistant Lyme arthritis, but not other forms of arthritis, generated responses to OspA, hLFA-1, and their highly related peptide epitopes. Identification of the initiating bacterial antigen and a cross-reactive autoantigen may provide a model for development of autoimmune disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gross, D M -- Forsthuber, T -- Tary-Lehmann, M -- Etling, C -- Ito, K -- Nagy, Z A -- Field, J A -- Steere, A C -- Huber, B T -- R01 AR20358/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 1998 Jul 31;281(5377):703-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Tufts University, Boston, MA 02111 USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9685265" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Algorithms ; Amino Acid Sequence ; Animals ; Antigen Presentation ; Antigens, Surface/immunology/metabolism ; Arthritis, Reactive/drug therapy/*immunology ; Autoantigens/*immunology ; Autoimmune Diseases/*immunology ; Bacterial Outer Membrane Proteins/immunology/metabolism ; Bacterial Vaccines ; Borrelia burgdorferi Group/immunology ; Child ; Cross Reactions ; Female ; HLA-DR Antigens/genetics/immunology/metabolism ; HLA-DRB1 Chains ; Humans ; Immunodominant Epitopes ; *Lipoproteins ; Lyme Disease/drug therapy/*immunology ; Lymphocyte Function-Associated Antigen-1/chemistry/*immunology/metabolism ; Male ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; Synovial Fluid/immunology ; T-Lymphocytes, Helper-Inducer/immunology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    A possible new approach to combating Staph infections (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-05-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Strauss, E -- New York, N.Y. -- Science. 1998 Apr 17;280(5362):379.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9575082" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Bacterial/biosynthesis ; Bacterial Proteins/*antagonists & ; inhibitors/genetics/*immunology/metabolism/*therapeutic use ; Bacterial Toxins/biosynthesis ; *Bacterial Vaccines ; Gene Expression Regulation, Bacterial ; Humans ; Mice ; Oligopeptides/metabolism/*therapeutic use ; RNA, Antisense/antagonists & inhibitors/metabolism ; RNA, Bacterial/antagonists & inhibitors/metabolism ; Signal Transduction ; Staphylococcal Skin Infections/*drug therapy/microbiology/*prevention & control ; Staphylococcus aureus/genetics/metabolism/*pathogenicity ; Vaccination ; Virulence
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    From fat-free mice, the skinny on diabetes (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-12-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gura, T -- New York, N.Y. -- Science. 1998 Oct 23;282(5389):604.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9841407" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue/*physiology ; Animals ; Chromans/therapeutic use ; Diabetes Mellitus, Type 2/drug therapy/*etiology/physiopathology ; Fatty Acids/metabolism ; Humans ; Hypoglycemic Agents/therapeutic use ; Lipodystrophy/drug therapy ; Mice ; Mice, Transgenic ; Thiazoles/therapeutic use ; *Thiazolidinediones ; Transcription Factors/genetics/physiology ; Triglycerides/metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 62
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    Activation of the protein kinase p38 in the spindle assembly checkpoint and mitotic arrest (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-05-09
    Description: The mitogen-activated protein kinase (MAPK) superfamily comprises classical MAPK (also called ERK), c-Jun amino-terminal or stress-activated protein kinase (JNK or SAPK), and p38. Although MAPK is essential for meiotic processes in Xenopus oocytes and the spindle assembly checkpoint in Xenopus egg extracts, the role of members of the MAPK superfamily in M phase or the spindle assembly checkpoint during somatic cell cycles has not been elucidated. The kinase p38, but not MAPK or JNK, was activated in mammalian cultured cells when the cells were arrested in M phase by disruption of the spindle with nocodazole. Addition of activated recombinant p38 to Xenopus cell-free extracts caused arrest of the extracts in M phase, and injection of activated p38 into cleaving embryos induced mitotic arrest. Treatment of NIH 3T3 cells with a specific inhibitor of p38 suppressed activation of the checkpoint by nocodazole. Thus, p38 functions as a component of the spindle assembly checkpoint in somatic cell cycles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Takenaka, K -- Moriguchi, T -- Nishida, E -- New York, N.Y. -- Science. 1998 Apr 24;280(5363):599-602.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biophysics, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwake, Sakyo-ku, Kyoto 606-01, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9554853" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; Calcium-Calmodulin-Dependent Protein Kinases/antagonists & inhibitors/*metabolism ; Enzyme Activation ; Enzyme Inhibitors/pharmacology ; G1 Phase ; HeLa Cells ; Humans ; Imidazoles/pharmacology ; Immediate-Early Proteins/metabolism/pharmacology ; JNK Mitogen-Activated Protein Kinases ; MAP Kinase Kinase 6 ; Maturation-Promoting Factor/metabolism ; Mice ; Mitogen-Activated Protein Kinase Phosphatases ; *Mitogen-Activated Protein Kinases ; *Mitosis ; Nocodazole/pharmacology ; Protein Tyrosine Phosphatases/metabolism/pharmacology ; Pyridines/pharmacology ; Recombinant Proteins/metabolism ; S Phase ; Spindle Apparatus/*metabolism ; Xenopus ; *Xenopus Proteins ; p38 Mitogen-Activated Protein Kinases
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  • 63
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    Neocortical neurons: where do they come from? (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-02-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lumsden, A -- Gulisano, M -- New York, N.Y. -- Science. 1997 Oct 17;278(5337):402-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council Brain Development Programme, Department of Developmental Neurobiology, Guy's Hospital London, SE1 9RT, England. al67@umds.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9381143" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Movement ; Cerebral Ventricles/cytology/embryology ; Corpus Striatum/cytology/*embryology ; DNA-Binding Proteins/genetics/physiology ; Gene Expression Regulation, Developmental ; Genes, Homeobox ; Homeodomain Proteins/genetics/physiology ; Interneurons/metabolism/*physiology ; Mice ; Mice, Knockout ; Neocortex/*cytology/*embryology/metabolism ; Stem Cells/physiology ; Telencephalon/embryology ; Transcription Factors ; gamma-Aminobutyric Acid/biosynthesis
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  • 64
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    Inhibitory function of p21Cip1/WAF1 in differentiation of primary mouse keratinocytes independent of cell cycle control (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-06-06
    Description: The cyclin-dependent kinase inhibitor p21(Cip1/WAF1) has been implicated as an inducer of differentiation. However, although expression of p21 is increased in postmitotic cells immediately adjacent to the proliferative compartment, its expression is decreased in cells further along the differentiation program. Expression of the p21 protein was decreased in terminally differentiated primary keratinocytes of mice, and this occurred by a proteasome-dependent pathway. Forced expression of p21 in these cells inhibited the expression of markers of terminal differentiation at both the protein and messenger RNA levels. These inhibitory effects on differentiation were not observed with a carboxyl-terminal truncation mutant or with the unrelated cyclin-dependent kinase inhibitor p16(INK4a), although all these molecules exerted similar inhibition of cell growth. These findings reveal an inhibitory role of p21 in the late stages of differentiation that does not result from the effects of p21 on the cell cycle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Di Cunto, F -- Topley, G -- Calautti, E -- Hsiao, J -- Ong, L -- Seth, P K -- Dotto, G P -- AR39190/AR/NIAMS NIH HHS/ -- CA16038/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1998 May 15;280(5366):1069-72.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cutaneous Biology Research Center, Massachusetts General Hospital and Harvard Medical School, 13th Street, Charlestown, MA 02129, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9582119" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcysteine/analogs & derivatives/pharmacology ; Adenoviridae/genetics/physiology ; Animals ; Animals, Newborn ; *Cell Cycle ; *Cell Differentiation ; Cells, Cultured ; Cyclin-Dependent Kinase Inhibitor p21 ; Cyclin-Dependent Kinases/antagonists & inhibitors/metabolism ; Cyclins/genetics/*metabolism ; Enzyme Inhibitors/metabolism ; Gene Expression Regulation ; Keratinocytes/*cytology/metabolism/virology ; Leupeptins/pharmacology ; Membrane Proteins/biosynthesis/genetics ; Mice ; Mutation ; Promoter Regions, Genetic ; Protein Precursors/biosynthesis/genetics ; RNA, Messenger/genetics/metabolism ; Succinates/pharmacology ; Transfection
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    Antibodies stage a comeback in cancer treatment (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-06-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dickman, S -- New York, N.Y. -- Science. 1998 May 22;280(5367):1196-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9634400" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal/adverse effects/*therapeutic use ; Antineoplastic Agents/therapeutic use ; Breast Neoplasms/therapy ; Clinical Trials as Topic ; Colonic Neoplasms/therapy ; Combined Modality Therapy ; Humans ; Lymphoma, B-Cell/therapy ; Mice ; Neoplasms/*therapy
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 66
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    Correction of deafness in shaker-2 mice by an unconventional myosin in a BAC transgene (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-06-20
    Description: The shaker-2 mouse mutation, the homolog of human DFNB3, causes deafness and circling behavior. A bacterial artificial chromosome (BAC) transgene from the shaker-2 critical region corrected the vestibular defects, deafness, and inner ear morphology of shaker-2 mice. An unconventional myosin gene, Myo15, was discovered by DNA sequencing of this BAC. Shaker-2 mice were found to have an amino acid substitution at a highly conserved position within the motor domain of this myosin. Auditory hair cells of shaker-2 mice have very short stereocilia and a long actin-containing protrusion extending from their basal end. This histopathology suggests that Myo15 is necessary for actin organization in the hair cells of the cochlea.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Probst, F J -- Fridell, R A -- Raphael, Y -- Saunders, T L -- Wang, A -- Liang, Y -- Morell, R J -- Touchman, J W -- Lyons, R H -- Noben-Trauth, K -- Friedman, T B -- Camper, S A -- Z01 DC 00035/DC/NIDCD NIH HHS/ -- Z01 DC 00038/DC/NIDCD NIH HHS/ -- Z01 DC 02407/DC/NIDCD NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1998 May 29;280(5368):1444-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Human Genetics, 4701 MSRB III, University of Michigan, 1500 West Medical Center Drive, Ann Arbor, MI 48109, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9603735" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Binding Sites ; Brain/metabolism ; Chromosomes, Bacterial ; Deafness/*genetics/pathology/therapy ; Ear, Inner/metabolism ; Female ; Genetic Complementation Test ; Hair Cells, Auditory/ultrastructure ; Humans ; Liver/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Mutant Strains ; Mice, Transgenic ; Myosins/chemistry/*genetics/metabolism ; Phenotype ; Point Mutation ; Transgenes
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    The power of the front page of The New York Times (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-06-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 1998 May 15;280(5366):996-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9616089" target="_blank"〉PubMed〈/a〉
    Keywords: Angiostatins ; Animals ; Antineoplastic Agents/*therapeutic use ; Clinical Trials as Topic ; Collagen/therapeutic use ; Drug Evaluation, Preclinical ; Drug Industry/economics ; Endostatins ; Humans ; Investments ; *Journalism, Medical ; Mice ; Neoplasms/drug therapy ; Neovascularization, Pathologic/*drug therapy ; *Newspapers as Topic ; Peptide Fragments/therapeutic use ; Plasminogen/therapeutic use
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Monoallelic expression of the interleukin-2 locus (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-04-16
    Description: The lymphokine interleukin-2 (IL-2) is responsible for autocrine cell cycle progression and regulation of immune responses. Uncontrolled secretion of IL-2 results in adverse reactions ranging from anergy, to aberrant T cell activation, to autoimmunity. With the use of fluorescent in situ hybridization and single-cell polymerase chain reaction in cells with different IL-2 alleles, IL-2 expression in mature thymocytes and T cells was found to be tightly controlled by monoallelic expression. Because IL-2 is encoded at a nonimprinted autosomal locus, this result represents an unusual regulatory mode for controlling the precise expression of a single gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hollander, G A -- Zuklys, S -- Morel, C -- Mizoguchi, E -- Mobisson, K -- Simpson, S -- Terhorst, C -- Wishart, W -- Golan, D E -- Bhan, A K -- Burakoff, S J -- P01 CA39542-09/CA/NCI NIH HHS/ -- R01 AI17258-18/AI/NIAID NIH HHS/ -- R01 DK47677/DK/NIDDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1998 Mar 27;279(5359):2118-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Pediatric Immunology, Department of Research and Children's Hospital, Basel University Medical School, 4031 Basel, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9516115" target="_blank"〉PubMed〈/a〉
    Keywords: *Alleles ; Animals ; CD4-Positive T-Lymphocytes/cytology/*immunology ; Concanavalin A/pharmacology ; DNA Replication ; Female ; Flow Cytometry ; *Gene Expression Regulation ; Heterozygote ; In Situ Hybridization, Fluorescence ; Interleukin-2/biosynthesis/*genetics ; Lymphocyte Activation ; Male ; Mice ; Mice, Inbred C57BL ; Muridae ; Mutation ; Polymerase Chain Reaction ; S Phase ; Transcription, Genetic
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Clock photoreceptor shared by plants and animals (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-12-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 1998 Nov 27;282(5394):1628-30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9867661" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arabidopsis/physiology ; Arabidopsis Proteins ; Behavior, Animal ; *Biological Clocks ; *Circadian Rhythm ; Cryptochromes ; Darkness ; Drosophila/physiology ; *Drosophila Proteins ; *Eye Proteins ; Flavoproteins/genetics/*physiology ; Gene Expression Regulation ; *Light ; Mice ; Mice, Knockout ; *Photoreceptor Cells, Invertebrate ; Receptors, G-Protein-Coupled
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Stroke-damaged neurons may commit cellular suicide (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-09-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 1998 Aug 28;281(5381):1302-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9735048" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis/drug effects ; Brain/metabolism/*pathology ; Brain Ischemia/drug therapy/metabolism/pathology ; *Cell Death ; Cerebrovascular Disorders/drug therapy/metabolism/*pathology ; Cysteine Endopeptidases/metabolism ; Cysteine Proteinase Inhibitors/pharmacology/therapeutic use ; DNA Fragmentation ; Humans ; Mice ; Necrosis ; Neurons/metabolism/*pathology ; Rats
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Systems for identifying new drugs are often faulty (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-02-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gura, T -- New York, N.Y. -- Science. 1997 Nov 7;278(5340):1041-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9381203" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antineoplastic Agents/*therapeutic use ; Disease Models, Animal ; *Drug Screening Assays, Antitumor ; Genes, Tumor Suppressor/genetics ; Humans ; Mice ; Mice, Knockout ; Mice, Mutant Strains ; Mutation ; Neoplasm Transplantation ; Neoplasms/*drug therapy/genetics ; Oncogenes/genetics ; Transplantation, Heterologous ; Tumor Cells, Cultured ; *Tumor Stem Cell Assay
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Defective T cell differentiation in the absence of Jnk1 (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-12-16
    Description: The c-Jun NH2-terminal kinase (JNK) signaling pathway has been implicated in the immune response that is mediated by the activation and differentiation of CD4 helper T (TH) cells into TH1 and TH2 effector cells. JNK activity observed in wild-type activated TH cells was severely reduced in TH cells from Jnk1-/- mice. The Jnk1-/- T cells hyperproliferated, exhibited decreased activation-induced cell death, and preferentially differentiated to TH2 cells. The enhanced production of TH2 cytokines by Jnk1-/- cells was associated with increased nuclear accumulation of the transcription factor NFATc. Thus, the JNK1 signaling pathway plays a key role in T cell receptor-initiated TH cell proliferation, apoptosis, and differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dong, C -- Yang, D D -- Wysk, M -- Whitmarsh, A J -- Davis, R J -- Flavell, R A -- CA65861/CA/NCI NIH HHS/ -- CA72009/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1998 Dec 11;282(5396):2092-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Immunobiology, Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9851932" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Calcium-Calmodulin-Dependent Protein Kinases/genetics/*metabolism ; Cell Differentiation ; Cell Division ; DNA-Binding Proteins/metabolism ; Female ; Gene Targeting ; Hemocyanin/immunology ; Interferon-gamma/biosynthesis ; Interleukins/biosynthesis ; JNK Mitogen-Activated Protein Kinases ; *Lymphocyte Activation ; Male ; Mice ; Mice, Knockout ; *Mitogen-Activated Protein Kinases ; NFATC Transcription Factors ; *Nuclear Proteins ; Signal Transduction ; T-Lymphocytes, Helper-Inducer/cytology/*immunology/metabolism ; Th1 Cells/cytology/immunology ; Th2 Cells/cytology/immunology ; Transcription Factors/metabolism
    Print ISSN: 0036-8075
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    Positive selection through a motif in the alphabeta T cell receptor (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-08-07
    Description: The two lineages of T cells, alphabeta and gammadelta, differ in their developmental requirements: only alphabeta T cells require major histocompatibility complex recognition, a process known as positive selection. The alphabeta T cell receptor (TCR), but not its gammadelta counterpart, contains a motif within the alpha-chain connecting peptide domain (alpha-CPM) that has been conserved over the last 500 million years. In transgenic mice expressing an alphabeta TCR lacking the alpha-CPM, thymocytes were blocked in positive selection but could undergo negative selection. Thus, the alpha-CPM seems to participate in the generation of signals required for positive selection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Backstrom, B T -- Muller, U -- Hausmann, B -- Palmer, E -- New York, N.Y. -- Science. 1998 Aug 7;281(5378):835-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Basel Institute for Immunology, CH-4005 Basel, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9694657" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigen-Presenting Cells/immunology ; Antigens, CD3/analysis ; CD4-Positive T-Lymphocytes/immunology ; Cell Lineage ; Cells, Cultured ; Histocompatibility Antigens Class II/immunology ; Ligands ; Lymphocyte Count ; Membrane Proteins/analysis ; Mice ; Mice, Inbred C57BL ; Mice, Nude ; Mice, Transgenic ; Molecular Sequence Data ; Mutation ; Receptor-CD3 Complex, Antigen, T-Cell/immunology/metabolism ; Receptors, Antigen, T-Cell/analysis ; Receptors, Antigen, T-Cell, alpha-beta/*chemistry/genetics/*immunology ; Signal Transduction ; T-Lymphocyte Subsets/*immunology ; Thymus Gland/immunology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 74
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    Promotion of trophoblast stem cell proliferation by FGF4 (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-12-16
    Description: The trophoblast cell lineage is essential for the survival of the mammalian embryo in utero. This lineage is specified before implantation into the uterus and is restricted to form the fetal portion of the placenta. A culture of mouse blastocysts or early postimplantation trophoblasts in the presence of fibroblast growth factor 4 (FGF4) permitted the isolation of permanent trophoblast stem cell lines. These cell lines differentiated to other trophoblast subtypes in vitro in the absence of FGF4 and exclusively contributed to the trophoblast lineage in vivo in chimeras.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tanaka, S -- Kunath, T -- Hadjantonakis, A K -- Nagy, A -- Rossant, J -- New York, N.Y. -- Science. 1998 Dec 11;282(5396):2072-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9851926" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blastocyst/cytology ; Cell Differentiation ; Cell Division ; Cell Line ; Cell Lineage ; Chimera ; Culture Media, Conditioned ; Embryo, Mammalian/cytology ; Female ; Fibroblast Growth Factor 4 ; Fibroblast Growth Factors/*pharmacology/physiology ; Fibroblasts/cytology ; Gene Expression Regulation, Developmental ; Genetic Markers ; Karyotyping ; Male ; Mice ; Models, Biological ; Proto-Oncogene Proteins/*pharmacology/physiology ; Signal Transduction ; Stem Cells/*cytology/metabolism ; Trophoblasts/*cytology/metabolism
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    Proteases, processing, and thymic selection (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-05-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cresswell, P -- New York, N.Y. -- Science. 1998 Apr 17;280(5362):394-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Immunobiology, Howard Hughes Medical Institute Research Laboratories, Yale University School of Medicine, New Haven, CT 06510, USA. peter.cresswell@yale.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9575085" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antigen Presentation ; Antigen-Presenting Cells/enzymology/immunology/*metabolism ; Antigens, Differentiation, B-Lymphocyte/*metabolism ; Bone Marrow Cells/enzymology/immunology/metabolism ; CD4-Positive T-Lymphocytes/*immunology ; Cathepsin L ; Cathepsins/antagonists & inhibitors/*metabolism ; Cysteine Endopeptidases ; *Endopeptidases ; Histocompatibility Antigens Class II/*metabolism ; Mice ; Thymus Gland/enzymology/*immunology
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    Structure of nitric oxide synthase oxygenase dimer with pterin and substrate (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-04-16
    Description: Crystal structures of the murine cytokine-inducible nitric oxide synthase oxygenase dimer with active-center water molecules, the substrate L-arginine (L-Arg), or product analog thiocitrulline reveal how dimerization, cofactor tetrahydrobiopterin, and L-Arg binding complete the catalytic center for synthesis of the essential biological signal and cytotoxin nitric oxide. Pterin binding refolds the central interface region, recruits new structural elements, creates a 30 angstrom deep active-center channel, and causes a 35 degrees helical tilt to expose a heme edge and the adjacent residue tryptophan-366 for likely reductase domain interactions and caveolin inhibition. Heme propionate interactions with pterin and L-Arg suggest that pterin has electronic influences on heme-bound oxygen. L-Arginine binds to glutamic acid-371 and stacks with heme in an otherwise hydrophobic pocket to aid activation of heme-bound oxygen by direct proton donation and thereby differentiate the two chemical steps of nitric oxide synthesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Crane, B R -- Arvai, A S -- Ghosh, D K -- Wu, C -- Getzoff, E D -- Stuehr, D J -- Tainer, J A -- HL58883/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1998 Mar 27;279(5359):2121-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9516116" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arginine/chemistry/*metabolism ; Binding Sites ; Biopterin/*analogs & derivatives/chemistry/metabolism ; Citrulline/analogs & derivatives/chemistry/metabolism ; Crystallography, X-Ray ; Dimerization ; Hydrogen Bonding ; Isoenzymes/chemistry/metabolism ; Ligands ; Macrophages/enzymology ; Mice ; Models, Molecular ; Nitric Oxide/biosynthesis ; Nitric Oxide Synthase/*chemistry/metabolism ; Nitric Oxide Synthase Type II ; *Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Thiourea/analogs & derivatives/chemistry/metabolism
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    Cell surface trafficking of Fas: a rapid mechanism of p53-mediated apoptosis (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-10-09
    Description: p53 acts as a tumor suppressor by inducing both growth arrest and apoptosis. p53-induced apoptosis can occur without new RNA synthesis through an unknown mechanism. In human vascular smooth muscle cells, p53 activation transiently increased surface Fas (CD95) expression by transport from the Golgi complex. Golgi disruption blocked both p53-induced surface Fas expression and apoptosis. p53 also induced Fas-FADD binding and transiently sensitized cells to Fas-induced apoptosis. In contrast, lpr and gld fibroblasts were resistant to p53-induced apoptosis. Thus, p53 can mediate apoptosis through Fas transport from cytoplasmic stores.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bennett, M -- Macdonald, K -- Chan, S W -- Luzio, J P -- Simari, R -- Weissberg, P -- HL34073/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1998 Oct 9;282(5387):290-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 2QQ, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9765154" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Animals ; Antigens, CD95/genetics/*metabolism ; *Apoptosis/drug effects ; Brefeldin A/pharmacology ; Carrier Proteins/metabolism ; Cell Membrane/*metabolism ; Cells, Cultured ; Enzyme Inhibitors/pharmacology ; Etoposide/pharmacology ; Fas Ligand Protein ; Fas-Associated Death Domain Protein ; Golgi Apparatus/metabolism ; Humans ; Membrane Glycoproteins/genetics/metabolism ; Mice ; Muscle, Smooth, Vascular/cytology ; Mutation ; Protein Synthesis Inhibitors/pharmacology ; Rats ; Topoisomerase II Inhibitors ; Tumor Suppressor Protein p53/*physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Natural ligand of mouse CD1d1: cellular glycosylphosphatidylinositol (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-03-21
    Description: Mouse CD1d1, a member of the CD1 family of evolutionarily conserved major histocompatibility antigen-like molecules, controls the differentiation and function of a T lymphocyte subset, NK1+ natural T cells, proposed to regulate immune responses. The CD1d1 crystal structure revealed a large hydrophobic binding site occupied by a ligand of unknown chemical nature. Mass spectrometry and metabolic radiolabeling were used to identify cellular glycosylphosphatidylinositol as a major natural ligand of CD1d1. CD1d1 bound glycosylphosphatidylinositol through its phosphatidylinositol aspect with high affinity. Glycosylphosphatidylinositol or another glycolipid could be a candidate natural ligand for CD1d1-restricted T cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Joyce, S -- Woods, A S -- Yewdell, J W -- Bennink, J R -- De Silva, A D -- Boesteanu, A -- Balk, S P -- Cotter, R J -- Brutkiewicz, R R -- New York, N.Y. -- Science. 1998 Mar 6;279(5356):1541-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Milton S. Hershey Medical Center, Hershey, PA 17033-0850, USA. sjoyce@bcmic.hmc.psu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9488653" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD1/chemistry/isolation & purification/*metabolism ; Binding Sites ; Glycosylphosphatidylinositols/chemistry/*metabolism ; Ligands ; Mass Spectrometry ; Mice ; Solubility ; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization ; T-Lymphocyte Subsets/immunology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 79
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    Generation of intestinal T cells from progenitors residing in gut cryptopatches (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-05-02
    Description: Cryptopatches (CPs) are part of the murine intestinal immune compartment. Cells isolated from CPs of the small intestine that were c-kit positive (c-kit+) but lineage markers negative (Lin-) gave rise to T cell receptor (TCR) alphabeta and TCR gammadelta intestinal intraepithelial T cells after in vivo transfer or tissue engraftment into severe combined immunodeficient mice. In contrast, cells from Peyer's patches and mesenteric lymph nodes, which belong in the same intestinal immune compartment but lack c-kit+Lin- cells, failed to do so. These findings and results of electron microscopic analysis provide evidence of a local intestinal T cell precursor that develops in the CPs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Saito, H -- Kanamori, Y -- Takemori, T -- Nariuchi, H -- Kubota, E -- Takahashi-Iwanaga, H -- Iwanaga, T -- Ishikawa, H -- New York, N.Y. -- Science. 1998 Apr 10;280(5361):275-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, Keio University School of Medicine, Tokyo 160, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9535655" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Basement Membrane/ultrastructure ; Cell Lineage ; Cell Transplantation ; Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells/cytology/*immunology ; *Immunity, Mucosal ; Intestinal Mucosa/cytology/*immunology/transplantation/ultrastructure ; Intestine, Small/cytology/*immunology/transplantation/ultrastructure ; Lymph Nodes/cytology/immunology ; Mice ; Mice, Inbred BALB C ; Mice, Nude ; Mice, SCID ; Microscopy, Electron ; Microscopy, Electron, Scanning ; Peyer's Patches/cytology/immunology ; Proto-Oncogene Proteins c-kit/analysis ; Receptors, Antigen, T-Cell, alpha-beta/analysis ; Receptors, Antigen, T-Cell, gamma-delta/analysis ; T-Lymphocyte Subsets/cytology/*immunology/transplantation
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    Attenuation of virulence by disruption of the Mycobacterium tuberculosis erp gene (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-10-23
    Description: The virulence of the mycobacteria that cause tuberculosis depends on their ability to multiply in mammalian hosts. Disruption of the bacterial erp gene, which encodes the exported repetitive protein, impaired multiplication of M. tuberculosis and M. bovis Bacille Calmette-Guerin in cultured macrophages and mice. Reintroduction of erp into the mutants restored their ability to multiply. These results indicate that erp contributes to the virulence of M. tuberculosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berthet, F X -- Lagranderie, M -- Gounon, P -- Laurent-Winter, C -- Ensergueix, D -- Chavarot, P -- Thouron, F -- Maranghi, E -- Pelicic, V -- Portnoi, D -- Marchal, G -- Gicquel, B -- AI 35207/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1998 Oct 23;282(5389):759-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Unite de Genetique Mycobacterienne, Institut Pasteur, 25 rue du Docteur Roux, 75724 Paris Cedex 15, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9784137" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; BCG Vaccine ; Bacterial Proteins/analysis/genetics/*physiology ; Cell Line ; Genes, Bacterial ; Genetic Complementation Test ; Immunohistochemistry ; Lung/microbiology ; Macrophages/microbiology ; Membrane Proteins/analysis/genetics/*physiology ; Mice ; Mice, Inbred BALB C ; Mutation ; Mycobacterium bovis/genetics/growth & development ; Mycobacterium tuberculosis/genetics/growth & ; development/metabolism/*pathogenicity ; Phagosomes/microbiology ; Recombinant Fusion Proteins ; Tuberculosis/microbiology ; Vaccines, Attenuated ; Virulence/genetics
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    Aging and endocrinology (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-02-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watson, R R -- New York, N.Y. -- Science. 1998 Jan 16;279(5349):304-5; author reply 306.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9454317" target="_blank"〉PubMed〈/a〉
    Keywords: Aging/*drug effects ; Animals ; Clinical Trials as Topic ; Dehydroepiandrosterone/*pharmacology/therapeutic use ; Drug Synergism ; Female ; Humans ; Melatonin/*pharmacology/therapeutic use ; Mice ; Mice, Inbred C57BL ; Vitamin E/pharmacology/therapeutic use
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  • 82
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    Dual requirement for gephyrin in glycine receptor clustering and molybdoenzyme activity (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-11-13
    Description: Glycine receptors are anchored at inhibitory chemical synapses by a cytoplasmic protein, gephyrin. Molecular cloning revealed the similarity of gephyrin to prokaryotic and invertebrate proteins essential for synthesizing a cofactor required for activity of molybdoenzymes. Gene targeting in mice showed that gephyrin is required both for synaptic clustering of glycine receptors in spinal cord and for molybdoenzyme activity in nonneural tissues. The mutant phenotype resembled that of humans with hereditary molybdenum cofactor deficiency and hyperekplexia (a failure of inhibitory neurotransmission), suggesting that gephyrin function may be impaired in both diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Feng, G -- Tintrup, H -- Kirsch, J -- Nichol, M C -- Kuhse, J -- Betz, H -- Sanes, J R -- New York, N.Y. -- Science. 1998 Nov 13;282(5392):1321-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anatomy and Neurobiology, Washington University School of Medicine, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9812897" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; Brain/cytology/physiology ; Carrier Proteins/*physiology ; Chimera ; *Coenzymes ; Gene Targeting ; Glycine/physiology ; Humans ; Membrane Proteins/*physiology ; Metalloproteins/*metabolism ; Mice ; Molybdenum/*metabolism ; Motor Neurons/physiology ; Oxidoreductases Acting on Sulfur Group Donors/metabolism ; Phenotype ; Pteridines/*metabolism ; *Receptor Aggregation ; Receptors, Glycine/*physiology ; Spinal Cord/cytology/physiology ; Stem Cells ; Synapses/*physiology ; Synaptic Transmission ; Xanthine Dehydrogenase/metabolism
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  • 83
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    A cellular striptease act (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-12-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Werb, Z -- Yan, Y -- CA72006/CA/NCI NIH HHS/ -- HD26732/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1998 Nov 13;282(5392):1279-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anatomy, University of California, San Francisco, CA 94143-0452, USA. zena@itsa.ucsf.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9867633" target="_blank"〉PubMed〈/a〉
    Keywords: ADAM Proteins ; Animals ; Catalytic Domain ; Cell Adhesion Molecules/metabolism ; Cell Membrane/*metabolism ; Growth Substances/metabolism ; L-Selectin/metabolism ; Ligands ; Membrane Proteins/*metabolism ; Metalloendopeptidases/chemistry/*metabolism ; Mice ; Models, Biological ; Receptor, Epidermal Growth Factor/metabolism ; Tumor Necrosis Factor-alpha/*metabolism
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    Role of mouse cryptochrome blue-light photoreceptor in circadian photoresponses (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-11-20
    Description: Cryptochromes are photoactive pigments in the eye that have been proposed to function as circadian photopigments. Mice lacking the cryptochrome 2 blue-light photoreceptor gene (mCry2) were tested for circadian clock-related functions. The mutant mice had a lower sensitivity to acute light induction of mPer1 in the suprachiasmatic nucleus (SCN) but exhibited normal circadian oscillations of mPer1 and mCry1 messenger RNA in the SCN. Behaviorally, the mutants had an intrinsic circadian period about 1 hour longer than normal and exhibited high-amplitude phase shifts in response to light pulses administered at circadian time 17. These data are consistent with the hypothesis that CRY2 protein modulates circadian responses in mice and suggest that cryptochromes have a role in circadian photoreception in mammals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thresher, R J -- Vitaterna, M H -- Miyamoto, Y -- Kazantsev, A -- Hsu, D S -- Petit, C -- Selby, C P -- Dawut, L -- Smithies, O -- Takahashi, J S -- Sancar, A -- GM20069/GM/NIGMS NIH HHS/ -- GM31082/GM/NIGMS NIH HHS/ -- P0 AG11412/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 1998 Nov 20;282(5393):1490-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Biophysics, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9822380" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Cycle Proteins ; Circadian Rhythm/*physiology ; Cryptochromes ; *Drosophila Proteins ; *Eye Proteins ; Female ; Flavoproteins/genetics/*physiology ; Gene Expression Regulation ; Gene Targeting ; In Situ Hybridization ; *Light ; Male ; Mice ; Mice, Inbred C57BL ; Motor Activity ; Mutation ; Nuclear Proteins/genetics ; Period Circadian Proteins ; *Photoreceptor Cells, Invertebrate ; Photoreceptor Cells, Vertebrate/*physiology ; Receptors, G-Protein-Coupled ; Suprachiasmatic Nucleus/metabolism
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  • 85
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    Autoinducer of virulence as a target for vaccine and therapy against Staphylococcus aureus (1998)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1998-05-09
    Description: Staphylococcus aureus causes pathologies ranging from minor skin infections to life-threatening diseases. Pathogenic effects are largely due to production of bacterial toxin, which is regulated by an RNA molecule, RNAIII. The S. aureus protein called RAP (RNAIII activating protein) activates RNAIII, and a peptide called RIP (RNAIII inhibiting peptide), produced by a nonpathogenic bacteria, inhibits RNAIII. Mice vaccinated with RAP or treated with purified or synthetic RIP were protected from S. aureus pathology. Thus, these two molecules may provide useful approaches for the prevention and treatment of diseases caused by S. aureus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balaban, N -- Goldkorn, T -- Nhan, R T -- Dang, L B -- Scott, S -- Ridgley, R M -- Rasooly, A -- Wright, S C -- Larrick, J W -- Rasooly, R -- Carlson, J R -- AI40830/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1998 Apr 17;280(5362):438-40.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Pathology, University of California, Davis, CA 95616, USA. nbalaban@ucdavis.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9545222" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibodies, Bacterial/biosynthesis ; Bacterial Proteins/antagonists & inhibitors/*immunology/isolation & purification ; Bacterial Toxins/biosynthesis ; *Bacterial Vaccines ; Male ; Mice ; Mice, Hairless ; Oligopeptides/isolation & purification/*therapeutic use ; RNA, Antisense/genetics ; RNA, Bacterial/genetics ; Signal Transduction ; Staphylococcal Skin Infections/*drug therapy/immunology/*prevention & control ; Staphylococcus aureus/metabolism/*pathogenicity ; Vaccination ; Virulence
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  • 86
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    Embryonic stem cell lines derived from human blastocysts (1998)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1998-11-06
    Description: Human blastocyst-derived, pluripotent cell lines are described that have normal karyotypes, express high levels of telomerase activity, and express cell surface markers that characterize primate embryonic stem cells but do not characterize other early lineages. After undifferentiated proliferation in vitro for 4 to 5 months, these cells still maintained the developmental potential to form trophoblast and derivatives of all three embryonic germ layers, including gut epithelium (endoderm); cartilage, bone, smooth muscle, and striated muscle (mesoderm); and neural epithelium, embryonic ganglia, and stratified squamous epithelium (ectoderm). These cell lines should be useful in human developmental biology, drug discovery, and transplantation medicine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thomson, J A -- Itskovitz-Eldor, J -- Shapiro, S S -- Waknitz, M A -- Swiergiel, J J -- Marshall, V S -- Jones, J M -- New York, N.Y. -- Science. 1998 Nov 6;282(5391):1145-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wisconsin Regional Primate Research Center, University of Wisconsin, Madison, WI 53715, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9804556" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Tumor-Associated, Carbohydrate ; Blastocyst/*cytology ; *Cell Culture Techniques ; Cell Differentiation ; *Cell Line ; Cryopreservation ; Ectoderm/cytology ; Endoderm/cytology ; Female ; Glycosphingolipids/analysis ; Graft Rejection ; Humans ; Karyotyping ; Male ; Mesoderm/cytology ; Mice ; Mice, SCID ; Stage-Specific Embryonic Antigens ; Stem Cell Transplantation ; Stem Cells/chemistry/*cytology ; Telomerase/metabolism ; Teratoma/etiology ; Trophoblasts/cytology
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    Segregation of transcription and replication sites into higher order domains (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-09-04
    Description: Microscopy shows that individual sites of DNA replication and transcription of mammalian nuclei segregate into sets of roughly 22 and 16 higher order domains, respectively. Each domain set displayed a distinct network-like appearance, including regions of individual domains and interdigitation of domains between the two networks. These data support a dynamic mosaic model for the higher order arrangement of genomic function inside the cell nuclei.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wei, X -- Samarabandu, J -- Devdhar, R S -- Siegel, A J -- Acharya, R -- Berezney, R -- GM 23922/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1998 Sep 4;281(5382):1502-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, State University of New York at Buffalo, Buffalo, NY 14260, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9727975" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; Cell Line ; Cell Nucleolus/metabolism/ultrastructure ; Cell Nucleus/*metabolism/ultrastructure ; *DNA Replication ; *Genome ; Genome, Human ; Humans ; Image Processing, Computer-Assisted ; Mice ; Microscopy, Confocal ; Models, Biological ; S Phase ; *Transcription, Genetic
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    Independent and epigenetic regulation of the interleukin-4 alleles in CD4+ T cells (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-08-28
    Description: How an individual effector T cell acquires a particular cytokine expression pattern from many possible patterns remains unclear. CD4+ T cells from F1 mice, which allowed assignment of the parental origin of interleukin-4 (IL-4) transcripts, were divided into clones that expressed IL-4 biallelically or monoallelically from either allele. The allelic pattern was transmitted as a stable epigenetic trait. Regulation of cytokine expression by a mechanism that treats each allele independently suggests a probabilistic process by which a diverse repertoire of combinatorially assorted cytokine gene expression patterns could be generated among the clonally related daughters of a single precursor cell.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bix, M -- Locksley, R M -- AI26918/AI/NIAID NIH HHS/ -- HL56385/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1998 Aug 28;281(5381):1352-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Departments of Medicine and Microbiology/Immunology, University of California, San Francisco (UCSF), San Francisco, CA 94143-0654, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9721100" target="_blank"〉PubMed〈/a〉
    Keywords: *Alleles ; Animals ; CD4-Positive T-Lymphocytes/*immunology ; Crosses, Genetic ; Cytokines/genetics ; DNA, Complementary ; Female ; *Gene Expression Regulation ; Interleukin-4/*genetics ; Male ; Mice ; Mice, Inbred BALB C ; Mice, Inbred Strains ; Polymerase Chain Reaction
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    Congenital heart disease caused by mutations in the transcription factor NKX2-5 (1998)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1998-07-04
    Description: Mutations in the gene encoding the homeobox transcription factor NKX2-5 were found to cause nonsyndromic, human congenital heart disease. A dominant disease locus associated with cardiac malformations and atrioventricular conduction abnormalities was mapped to chromosome 5q35, where NKX2-5, a Drosophila tinman homolog, is located. Three different NKX2-5 mutations were identified. Two are predicted to impair binding of NKX2-5 to target DNA, resulting in haploinsufficiency, and a third potentially augments target-DNA binding. These data indicate that NKX2-5 is important for regulation of septation during cardiac morphogenesis and for maturation and maintenance of atrioventricular node function throughout life.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schott, J J -- Benson, D W -- Basson, C T -- Pease, W -- Silberbach, G M -- Moak, J P -- Maron, B J -- Seidman, C E -- Seidman, J G -- New York, N.Y. -- Science. 1998 Jul 3;281(5373):108-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics and Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9651244" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Atrioventricular Node/physiopathology ; Chromosome Mapping ; Chromosomes, Human, Pair 5 ; Codon ; Female ; Genes, Dominant ; Genetic Linkage ; Heart Block/*genetics/physiopathology ; Heart Septal Defects, Atrial/*genetics/physiopathology ; Homeodomain Proteins/*genetics/metabolism ; Humans ; Male ; Mice ; Molecular Sequence Data ; Mutation ; Pedigree ; Protein Biosynthesis ; Transcription Factors/*genetics/metabolism ; *Xenopus Proteins
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  • 90
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    Muscle regeneration by bone marrow-derived myogenic progenitors (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-03-21
    Description: Growth and repair of skeletal muscle are normally mediated by the satellite cells that surround muscle fibers. In regenerating muscle, however, the number of myogenic precursors exceeds that of resident satellite cells, implying migration or recruitment of undifferentiated progenitors from other sources. Transplantation of genetically marked bone marrow into immunodeficient mice revealed that marrow-derived cells migrate into areas of induced muscle degeneration, undergo myogenic differentiation, and participate in the regeneration of the damaged fibers. Genetically modified, marrow-derived myogenic progenitors could potentially be used to target therapeutic genes to muscle tissue, providing an alternative strategy for treatment of muscular dystrophies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ferrari, G -- Cusella-De Angelis, G -- Coletta, M -- Paolucci, E -- Stornaiuolo, A -- Cossu, G -- Mavilio, F -- A.067/Telethon/Italy -- TGT06S01/Telethon/Italy -- New York, N.Y. -- Science. 1998 Mar 6;279(5356):1528-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉H. San Raffaele-Telethon Institute for Gene Therapy (TIGET), 20132 Milan, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9488650" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Marrow Cells/cytology/*physiology ; Bone Marrow Transplantation ; Cell Differentiation ; Cell Movement ; Genetic Therapy ; Humans ; Mice ; Mice, SCID ; Mice, Transgenic ; Muscle Fibers, Skeletal/cytology ; Muscle, Skeletal/*cytology/*physiology ; Muscular Dystrophies/therapy ; *Regeneration ; Stem Cells/*physiology ; Stromal Cells/cytology/physiology ; beta-Galactosidase/analysis/genetics
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  • 91
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    A transmembrane form of the prion protein in neurodegenerative disease (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-02-28
    Description: At the endoplasmic reticulum membrane, the prion protein (PrP) can be synthesized in several topological forms. The role of these different forms was explored with transgenic mice expressing PrP mutations that alter the relative ratios of the topological forms. Expression of a particular transmembrane form (termed CtmPrP) produced neurodegenerative changes in mice similar to those of some genetic prion diseases. Brains from these mice contained CtmPrP but not PrPSc, the PrP isoform responsible for transmission of prion diseases. Furthermore, in one heritable prion disease of humans, brain tissue contained CtmPrP but not PrPSc. Thus, aberrant regulation of protein biogenesis and topology at the endoplasmic reticulum can result in neurodegeneration.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hegde, R S -- Mastrianni, J A -- Scott, M R -- DeFea, K A -- Tremblay, P -- Torchia, M -- DeArmond, S J -- Prusiner, S B -- Lingappa, V R -- AG02132/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 1998 Feb 6;279(5352):827-34.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, University of California, San Francisco, CA 94143-0444, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9452375" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Brain/metabolism/pathology ; Cricetinae ; Endopeptidases/metabolism ; Endoplasmic Reticulum/chemistry/*metabolism ; Gerstmann-Straussler-Scheinker Disease/metabolism ; Humans ; Intracellular Membranes/chemistry ; Mesocricetus ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; Mutation ; Neurodegenerative Diseases/*etiology/metabolism/pathology ; PrPC Proteins/biosynthesis/*chemistry/genetics/*metabolism ; PrPSc Proteins/chemistry/metabolism ; Prion Diseases/etiology/metabolism/pathology ; Prions/biosynthesis/*chemistry/genetics/*metabolism ; Protein Conformation
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  • 92
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    An MTP inhibitor that normalizes atherogenic lipoprotein levels in WHHL rabbits (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-10-23
    Description: Patients with abetalipoproteinemia, a disease caused by defects in the microsomal triglyceride transfer protein (MTP), do not produce apolipoprotein B-containing lipoproteins. It was hypothesized that small molecule inhibitors of MTP would prevent the assembly and secretion of these atherogenic lipoproteins. To test this hypothesis, two compounds identified in a high-throughput screen for MTP inhibitors were used to direct the synthesis of a highly potent MTP inhibitor. This molecule (compound 9) inhibited the production of lipoprotein particles in rodent models and normalized plasma lipoprotein levels in Watanabe-heritable hyperlipidemic (WHHL) rabbits, which are a model for human homozygous familial hypercholesterolemia. These results suggest that compound 9, or derivatives thereof, has potential applications for the therapeutic lowering of atherogenic lipoprotein levels in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wetterau, J R -- Gregg, R E -- Harrity, T W -- Arbeeny, C -- Cap, M -- Connolly, F -- Chu, C H -- George, R J -- Gordon, D A -- Jamil, H -- Jolibois, K G -- Kunselman, L K -- Lan, S J -- Maccagnan, T J -- Ricci, B -- Yan, M -- Young, D -- Chen, Y -- Fryszman, O M -- Logan, J V -- Musial, C L -- Poss, M A -- Robl, J A -- Simpkins, L M -- Slusarchyk, W A -- Sulsky, R -- Taunk, P -- Magnin, D R -- Tino, J A -- Lawrence, R M -- Dickson, J K Jr -- Biller, S A -- New York, N.Y. -- Science. 1998 Oct 23;282(5389):751-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Metabolic Diseases, Bristol-Myers Squibb Pharmaceutical Research Institute, Princeton, NJ 08543-4000, USA. Wetterau_John_R@msmail.bms.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9784135" target="_blank"〉PubMed〈/a〉
    Keywords: Alanine Transaminase/blood ; Animals ; Apolipoproteins B/*blood ; Aspartate Aminotransferases/blood ; Carrier Proteins/*antagonists & inhibitors ; Cholesterol/*blood ; Cricetinae ; Disease Models, Animal ; Dose-Response Relationship, Drug ; Drug Design ; Drug Evaluation, Preclinical ; Fluorenes/chemistry/pharmacokinetics/*pharmacology ; Humans ; Hyperlipidemias/blood/drug therapy ; Hyperlipoproteinemia Type II/*blood/drug therapy ; Lipids/blood ; Lipoproteins/blood ; Liver/metabolism ; Mice ; Piperidines/chemistry/pharmacokinetics/*pharmacology ; Rabbits ; Rats ; Triglycerides/*blood/metabolism ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 93
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    Delivery of epitopes by the Salmonella type III secretion system for vaccine development (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-07-24
    Description: Avirulent strains of Salmonella typhimurium are being considered as antigen delivery vectors. During its intracellular stage in the host, S. typhimurium resides within a membrane-bound compartment and is not an efficient inducer of class I-restricted immune responses. Viral epitopes were successfully delivered to the host-cell cytosol by using the type III protein secretion system of S. typhimurium. This resulted in class I-restricted immune responses that protected vaccinated animals against lethal infection. This approach may allow the efficient use of S. typhimurium as an antigen delivery system to control infections by pathogens that require this type of immune response for protection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Russmann, H -- Shams, H -- Poblete, F -- Fu, Y -- Galan, J E -- Donis, R O -- New York, N.Y. -- Science. 1998 Jul 24;281(5376):565-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Genetics and Microbiology, School of Medicine, State University of New York at Stony Brook, Stony Brook, NY 11794-5222, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9677200" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antigen Presentation ; Antigens, Viral/immunology/metabolism ; Bacterial Proteins/genetics/*metabolism ; Cytosol/*immunology ; Endoplasmic Reticulum/immunology/metabolism ; Epitopes/*immunology ; Histocompatibility Antigens Class I/immunology ; Hybridomas ; Lymphocytic Choriomeningitis/prevention & control ; Lymphocytic choriomeningitis virus/immunology ; Mice ; Mice, Inbred C57BL ; Nucleoproteins/immunology/metabolism ; Peptide Fragments/immunology/metabolism ; Protein Tyrosine Phosphatases/genetics/*metabolism ; Recombinant Fusion Proteins/immunology/metabolism ; *Salmonella typhimurium/metabolism/pathogenicity ; T-Lymphocytes/immunology ; T-Lymphocytes, Cytotoxic/immunology ; Tumor Cells, Cultured ; Vaccines, Synthetic/*administration & dosage/immunology ; Viral Core Proteins/immunology/metabolism ; Viral Vaccines/immunology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 94
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    The importance of telomerase (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-02-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kelner, K L -- New York, N.Y. -- Science. 1997 Oct 24;278(5338):600.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9381167" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Transformation, Neoplastic ; Cells, Cultured ; Mice ; Mice, Transgenic ; Telomerase/genetics/*metabolism ; Telomere/*metabolism
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 95
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    Mediation of Sonic hedgehog-induced expression of COUP-TFII by a protein phosphatase (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-01-07
    Description: A Sonic hedgehog (Shh) response element was identified in the chicken ovalbumin upstream promoter-transcription factor II (COUP-TFII) promoter that binds to a factor distinct from Gli, a gene known to mediate Shh signaling. Although this binding activity is specifically stimulated by Shh-N (amino-terminal signaling domain), it can also be unmasked with protein phosphatase treatment in the mouse cell line P19, and induction by Shh-N can be blocked by phosphatase inhibitors. Thus, Shh-N signaling may result in dephosphorylation of a target factor that is required for activation of COUP-TFII-, Islet1-, and Gli response element-dependent gene expression. This finding identifies another step in the Shh-N signaling pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Krishnan, V -- Pereira, F A -- Qiu, Y -- Chen, C H -- Beachy, P A -- Tsai, S Y -- Tsai, M J -- New York, N.Y. -- Science. 1997 Dec 12;278(5345):1947-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX 77030 USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9395397" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; COUP Transcription Factor II ; COUP Transcription Factors ; Cell Line ; DNA/metabolism ; DNA-Binding Proteins/*genetics/metabolism ; Enzyme Inhibitors/pharmacology ; *Gene Expression Regulation ; Hedgehog Proteins ; Mice ; Okadaic Acid/pharmacology ; Oxazoles/pharmacology ; Phosphoprotein Phosphatases/antagonists & inhibitors/*metabolism ; Phosphorylation ; Promoter Regions, Genetic ; Proteins/*genetics/*metabolism ; *Receptors, Steroid ; Signal Transduction ; *Trans-Activators ; Transcription Factors/*genetics/metabolism
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 96
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    NIH, DuPont declare truce in mouse war (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-09-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 1998 Aug 28;281(5381):1261-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9735036" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Drug Industry ; *Genetic Engineering ; Integrases ; Mice ; *Mice, Transgenic ; *National Institutes of Health (U.S.) ; *Patents as Topic ; Technology Transfer ; United States ; *Viral Proteins
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 97
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    Genetic neurodegenerative diseases: the human illness and transgenic models (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-11-06
    Description: Review The neurodegenerative disorders, a heterogeneous group of chronic progressive diseases, are among the most puzzling and devastating illnesses in medicine. Some of these disorders, such as Alzheimer's disease, amyotrophic lateral sclerosis, the prion diseases, and Parkinson's disease, can occur sporadically and, in some instances, are caused by inheritance of gene mutations. Huntington's disease is acquired in an entirely genetic manner. Transgenic mice that express disease-causing genes recapitulate many features of these diseases. This review provides an overview of transgenic mouse models of familial amyotrophic lateral sclerosis, familial Alzheimer's disease, and Huntington's disease and the emerging insights relevant to the underlying molecular mechanisms of these diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Price, D L -- Sisodia, S S -- Borchelt, D R -- NS 10580/NS/NINDS NIH HHS/ -- NS 20471/NS/NINDS NIH HHS/ -- NS 37145/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1998 Nov 6;282(5391):1079-83.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. dlprice@welchlink.welch.jhu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9804539" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/genetics/metabolism/pathology ; Amino Acid Sequence ; Amyloid beta-Protein Precursor/chemistry ; Amyotrophic Lateral Sclerosis/genetics/metabolism/pathology ; Animals ; *Disease Models, Animal ; Humans ; Huntington Disease/genetics/metabolism/pathology ; Mice ; *Mice, Transgenic ; Molecular Sequence Data ; Neurodegenerative Diseases/*genetics/metabolism/pathology ; Peptides/genetics ; Trinucleotide Repeats
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 98
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    Growing joints use their noggins (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-06-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dickman, S -- New York, N.Y. -- Science. 1998 May 29;280(5368):1350.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9634411" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Body Patterning ; Bone Diseases/etiology/therapy ; Bone Morphogenetic Proteins/physiology ; Carrier Proteins ; Cartilage/embryology ; Embryonic Induction ; Genes, Homeobox ; Humans ; Joints/*embryology ; Mice ; Mice, Knockout ; Osteogenesis ; Proteins/*genetics/*physiology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 99
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    Small molecule fills hormone's shoes (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-08-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 1998 Jul 10;281(5374):149, 151.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9687270" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Benzimidazoles/chemistry/metabolism/*pharmacology ; DNA-Binding Proteins/metabolism ; Dimerization ; Granulocyte Colony-Stimulating Factor/metabolism/pharmacology ; Guanidines/chemistry/metabolism/*pharmacology ; Humans ; Mice ; *Milk Proteins ; Receptors, Granulocyte Colony-Stimulating Factor/chemistry/*metabolism ; STAT3 Transcription Factor ; STAT5 Transcription Factor ; Trans-Activators/metabolism
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 100
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    New gene tied to common form of Alzheimer's (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-08-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J -- New York, N.Y. -- Science. 1998 Jul 24;281(5376):507, 509.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9705719" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*genetics/metabolism ; Amyloid beta-Peptides/metabolism ; Animals ; Apolipoprotein E4 ; Apolipoproteins E/genetics/metabolism ; Brain/metabolism ; Genetic Linkage ; Genetic Predisposition to Disease ; Humans ; Low Density Lipoprotein Receptor-Related Protein-1 ; Mice ; Mutation ; Receptors, Immunologic/metabolism ; Risk Factors ; Sequence Deletion ; alpha-Macroglobulins/*genetics/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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