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  • Male  (104)
  • Transfection  (59)
  • American Association for the Advancement of Science (AAAS)  (161)
  • American Institute of Physics (AIP)
  • Oxford University Press
  • 1995-1999
  • 1990-1994  (161)
  • 1993  (161)
Collection
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  • American Association for the Advancement of Science (AAAS)  (161)
  • American Institute of Physics (AIP)
  • Oxford University Press
  • Springer  (1)
Years
  • 1995-1999
  • 1990-1994  (161)
Year
  • 1
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    Sea urchin egg receptor for sperm: sequence similarity of binding domain and hsp70 (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-03-05
    Description: Fertilization depends on cell surface recognition proteins that interact and thereby mediate binding and subsequent fusion of the sperm and egg. Overlapping complementary DNA's encoding the egg plasma membrane receptor for sperm from the sea urchin Strongylocentrotus purpuratus were cloned and sequenced. Analysis of the deduced primary structure suggests that the receptor is a transmembrane protein with a short cytoplasmic domain. This domain showed no sequence similarity to known protein sequences. In contrast, the extracellular, sperm binding domain of the receptor did show sequence similarity to the heat shock protein 70 (hsp70) family of proteins. Recombinant protein representing this portion of the receptor bound to the sperm protein, binding, and also inhibited fertilization in a species-specific manner; beads coated with the protein became specifically bound to acrosome-reacted sperm. These data provide a basis for detailed investigations of molecular interactions that occur in gamete recognition and egg activation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Foltz, K R -- Partin, J S -- Lennarz, W J -- HD18590/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1993 Mar 5;259(5100):1421-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, University of California, Santa Barbara 93106.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8383878" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cloning, Molecular ; Female ; Fertilization ; Heat-Shock Proteins/*genetics ; Humans ; Male ; Molecular Sequence Data ; Ovum/physiology ; Receptors, Cell Surface/*genetics/metabolism ; Recombinant Proteins/metabolism ; Restriction Mapping ; Sea Urchins ; Sequence Homology, Amino Acid ; Sperm-Ovum Interactions ; Spermatozoa/cytology/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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  • 2
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    Somber news from the AIDS front (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-06-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, J -- New York, N.Y. -- Science. 1993 Jun 18;260(5115):1712-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8390093" target="_blank"〉PubMed〈/a〉
    Keywords: AIDS Vaccines/therapeutic use ; *Acquired Immunodeficiency Syndrome/drug therapy/immunology/prevention & control ; Drug Therapy, Combination ; Female ; Humans ; Immunity, Cellular ; Male ; Sexually Transmitted Diseases/prevention & control ; Zalcitabine/therapeutic use ; Zidovudine/therapeutic use
    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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  • 3
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    Sex, violence, and sociobiology (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-10-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barash, D P -- New York, N.Y. -- Science. 1993 Oct 22;262(5133):491.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8211168" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Child ; Child Abuse ; Female ; Humans ; Male ; *Sexual Behavior ; Sexual Behavior, Animal ; Sociology ; *Violence
    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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  • 4
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    Cue-invariant shape selectivity of macaque inferior temporal neurons (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-05-14
    Description: The perception of shape is independent of the size and position of the shape and also of the visual cue that defines it. The same shape can be recognized whether defined by a difference in luminance, by motion, or by texture. Experiments showed that the shape selectivity of individual cells in the macaque inferior temporal cortex did not vary with the size and position of a shape and also did not vary with the visual cue used to define the shape. This cue invariance was true for static luminance and texture cues as well as for relative motion cues--that is, for cues that are processed in ventral and dorsal visual pathways. The properties of these inferior temporal cells meet the demands of cue-invariant shape coding.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sary, G -- Vogels, R -- Orban, G A -- New York, N.Y. -- Science. 1993 May 14;260(5110):995-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratorium voor Neuro- en Psychofysiologie, Faculteit der Geneeskunde, Katholieke Universiteit Leuven, Belgium.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8493538" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Form Perception ; Light ; Macaca mulatta ; Male ; Movement ; Neurons/*physiology ; Temporal Lobe/*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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  • 5
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    Rate and mechanism of nonhomologous recombination during a single cycle of retroviral replication (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-01-08
    Description: Oncogenes discovered in retroviruses such as Rous sarcoma virus were generated by transduction of cellular proto-oncogenes into the viral genome. Several different kinds of junctions between the viral and proto-oncogene sequences have been found in different viruses. A system of retrovirus vectors and a protocol that mimicked this transduction during a single cycle of retrovirus replication was developed. The transduction involved the formation of a chimeric viral-cellular RNA, strand switching of the reverse transcription growing point from an infectious retrovirus to the chimeric RNA, and often a subsequent deletion during the rest of viral DNA synthesis. A short region of sequence identity was frequently used for the strand switching. The rate of this process was about 0.1 to 1 percent of the rate of homologous retroviral recombination.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, J -- Temin, H M -- CA-07175/CA/NCI NIH HHS/ -- CA-22443/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 Jan 8;259(5092):234-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉McArdle Laboratory for Cancer Research, University of Wisconsin-Madison 53706.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8421784" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Cinnamates ; *DNA Replication ; DNA, Viral/chemistry/genetics ; Drug Resistance/genetics ; Genes, Viral ; Genetic Vectors ; Hygromycin B/analogs & derivatives ; Kinetics ; Mice ; Molecular Sequence Data ; Moloney murine leukemia virus/genetics ; Neomycin ; Plasmids ; *Proto-Oncogenes ; RNA, Viral/analysis/genetics ; *Recombination, Genetic ; Repetitive Sequences, Nucleic Acid ; Retroviridae/*genetics/physiology ; Transfection ; *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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    Mutations in the glucose-6-phosphatase gene that cause glycogen storage disease type 1a (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-10-22
    Description: Glycogen storage disease (GSD) type 1a is caused by the deficiency of D-glucose-6-phosphatase (G6Pase), the key enzyme in glucose homeostasis. Despite both a high incidence and morbidity, the molecular mechanisms underlying this deficiency have eluded characterization. In the present study, the molecular and biochemical characterization of the human G6Pase complementary DNA, its gene, and the expressed protein, which is indistinguishable from human microsomal G6Pase, are reported. Several mutations in the G6Pase gene of affected individuals that completely inactivate the enzyme have been identified. These results establish the molecular basis of this disease and open the way for future gene therapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lei, K J -- Shelly, L L -- Pan, C J -- Sidbury, J B -- Chou, J Y -- New York, N.Y. -- Science. 1993 Oct 22;262(5133):580-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Human Genetics Branch, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8211187" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; DNA, Complementary/genetics ; Exons ; Glucose-6-Phosphatase/*genetics/metabolism ; Glycogen Storage Disease Type I/enzymology/*genetics ; Glycosylation ; Humans ; Liver/enzymology ; Mice ; Molecular Sequence Data ; *Mutation ; Protein Conformation ; Transfection
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 7
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    Deletion of the paired alpha 5(IV) and alpha 6(IV) collagen genes in inherited smooth muscle tumors (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-08-27
    Description: The gene encoding alpha 6(IV) collagen, COL4A6, was identified on the human X chromosome in a head-to-head arrangement and within 452 base pairs of the alpha 5(IV) collagen gene, COL4A5. In earlier studies, intragenic deletions of COL4A5 were detected in a subset of patients with Alport syndrome (AS), a hereditary defect of basement membranes. In some families, AS cosegregates with diffuse leiomyomatosis (DL), a benign smooth muscle tumor diathesis. Here it is shown that patients with AS-DL harbor deletions that disrupt both COL4A5 and COL4A6. Thus, type IV collagen may regulate smooth muscle differentiation and morphogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhou, J -- Mochizuki, T -- Smeets, H -- Antignac, C -- Laurila, P -- de Paepe, A -- Tryggvason, K -- Reeders, S T -- New York, N.Y. -- Science. 1993 Aug 27;261(5125):1167-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT 06536-0812.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8356449" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Cell Differentiation ; Collagen/chemistry/*genetics ; Exons ; Female ; Fetus/metabolism ; *Gene Deletion ; Genetic Linkage ; Humans ; Leiomyoma/*genetics ; Male ; Molecular Sequence Data ; Morphogenesis ; Muscle, Smooth/cytology ; Mutation ; Nephritis, Hereditary/*genetics ; RNA, Messenger/genetics/metabolism
    Print ISSN: 0036-8075
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  • 8
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    Expression cloning and signaling properties of the rat glucagon receptor (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-03-12
    Description: Glucagon and the glucagon receptor are a primary source of control over blood glucose concentrations and are especially important to studies of diabetes in which the loss of control over blood glucose concentrations clinically defines the disease. A complementary DNA clone for the glucagon receptor was isolated by an expression cloning strategy, and the receptor protein was expressed in several kidney cell lines. The cloned receptor bound glucagon and caused an increase in the intracellular concentration of adenosine 3', 5'-monophosphate (cAMP). The cloned glucagon receptor also transduced a signal that led to an increased concentration of intracellular calcium. The glucagon receptor is similar to the calcitonin and parathyroid hormone receptors. It can transduce signals leading to the accumulation of two different second messengers, cAMP and calcium.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jelinek, L J -- Lok, S -- Rosenberg, G B -- Smith, R A -- Grant, F J -- Biggs, S -- Bensch, P A -- Kuijper, J L -- Sheppard, P O -- Sprecher, C A -- New York, N.Y. -- Science. 1993 Mar 12;259(5101):1614-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉ZymoGenetics Inc., Seattle, WA 98105.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8384375" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Calcium/pharmacology ; Cell Line ; Cloning, Molecular ; Cricetinae ; Cyclic AMP/metabolism ; Glucagon/metabolism/*pharmacology ; Kidney ; Kinetics ; Liver/*metabolism ; Molecular Sequence Data ; Rats ; Receptors, Gastrointestinal Hormone/genetics/metabolism/*physiology ; Receptors, Glucagon ; *Signal Transduction ; Transfection
    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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  • 9
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    Microsatellite instability in cancer of the proximal colon (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-05-07
    Description: Colorectal tumor DNA was examined for somatic instability at (CA)n repeats on human chromosomes 5q, 15q, 17p, and 18q. Differences between tumor and normal DNA were detected in 25 of the 90 (28 percent) tumors examined. This instability appeared as either a substantial change in repeat length (often heterogeneous in nature) or a minor change (typically two base pairs). Microsatellite instability was significantly correlated with the tumor's location in the proximal colon (P = 0.003), with increased patient survival (P = 0.02), and, inversely, with loss of heterozygosity for chromosomes 5q, 17p, and 18q. These data suggest that some colorectal cancers may arise through a mechanism that does not necessarily involve loss of heterozygosity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thibodeau, S N -- Bren, G -- Schaid, D -- CA-15083-18E8.1/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 May 7;260(5109):816-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Genetics Laboratory, Mayo Clinic, Rochester, MN 55905.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8484122" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Aged, 80 and over ; Chromosomes, Human, Pair 15 ; Chromosomes, Human, Pair 17 ; Chromosomes, Human, Pair 18 ; Chromosomes, Human, Pair 5 ; Colonic Neoplasms/*genetics ; Colorectal Neoplasms/*genetics ; DNA, Neoplasm/*genetics ; DNA, Satellite/*genetics ; Female ; Heterozygote ; Humans ; Male ; Middle Aged ; *Mutation ; Polymerase Chain Reaction ; Repetitive Sequences, Nucleic Acid
    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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  • 10
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    Induction of G alpha i2-specific antisense RNA in vivo inhibits neonatal growth (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-05-14
    Description: Guanosine triphosphate-binding regulatory proteins (G proteins) are key elements in transmembrane signaling and have been implicated as regulators of more complex biological processes such as differentiation and development. The G protein G alpha i2 is capable of mediating the inhibitory control of adenylylcyclase and regulates stem cell differentiation to primitive endoderm. Here an antisense RNA to G alpha i2 was expressed in a hybrid RNA construct whose expression was both tissue-specific and induced at birth. Transgenic mice in which the antisense construct was expressed displayed a lack of normal development in targeted organs that correlated with the absence of G alpha i2. The loss of G alpha i2 expression in adipose tissue of the transgenic mice was correlated with a rise in basal levels of adenosine 3',5'-monophosphate (cAMP) and the loss of receptor-mediated inhibition of adenylylcyclase. These data expand our understanding of G protein function in vivo and demonstrate the necessity for G alpha i2 in the development of liver and fat.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moxham, C M -- Hod, Y -- Malbon, C C -- New York, N.Y. -- Science. 1993 May 14;260(5110):991-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Pharmacology, State University of New York (SUNY)/Stony Brook 11794-8651.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8493537" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue/*growth & development/metabolism ; Animals ; Animals, Newborn/growth & development ; Base Sequence ; Body Weight ; GTP-Binding Proteins/biosynthesis/genetics/*physiology ; Growth/drug effects/*physiology ; Kidney/growth & development/metabolism ; Liver/*growth & development/metabolism ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; Phosphoenolpyruvate Carboxykinase (GTP)/genetics ; RNA, Antisense/*genetics ; Transfection
    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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  • 11
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    A genetic linkage map of the mouse: current applications and future prospects (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-10-01
    Description: Technological advances have made possible the development of high-resolution genetic linkage maps for the mouse. These maps in turn offer exciting prospects for understanding mammalian genome evolution through comparative mapping, for developing mouse models of human disease, and for identifying the function of all genes in the organism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Copeland, N G -- Jenkins, N A -- Gilbert, D J -- Eppig, J T -- Maltais, L J -- Miller, J C -- Dietrich, W F -- Weaver, A -- Lincoln, S E -- Steen, R G -- HG00198/HG/NHGRI NIH HHS/ -- N01-CO-74101/CO/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 Oct 1;262(5130):57-66.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉ABL-Basic Research Program, National Cancer Institute-Frederick Cancer Research and Development Center, MD 21702.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8211130" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; *Chromosome Mapping ; Cloning, Molecular ; Crosses, Genetic ; Female ; Genetic Markers ; *Genome ; Human Genome Project ; Humans ; Male ; Mice/*genetics ; Multigene Family ; Muridae/*genetics ; Mutation ; Neoplasms/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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  • 12
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    Uncovering of functional alternative CTLA-4 counter-receptor in B7-deficient mice (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-11-05
    Description: B7 delivers a costimulatory signal through CD28, resulting in interleukin-2 secretion and T cell proliferation. Blockade of this pathway results in T cell anergy. The in vivo role of B7 was evaluated with B7-deficient mice. These mice had a 70 percent decrease in costimulation of the response to alloantigen. Despite lacking B7 expression, activated B cells from these mice bound CTLA-4 and GL1 monoclonal antibody, demonstrating that alternative CTLA-4 ligand or ligands exist. These receptors are functionally important because the residual allogenic mixed lymphocyte responses were blocked by CTLA4Ig. Characterization of these CTLA-4 ligands should lead to strategies for manipulating the immune response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Freeman, G J -- Borriello, F -- Hodes, R J -- Reiser, H -- Hathcock, K S -- Laszlo, G -- McKnight, A J -- Kim, J -- Du, L -- Lombard, D B -- CA 40216/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 Nov 5;262(5135):907-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Hematologic Malignancies, Dana-Farber Cancer Institute, Boston, MA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7694362" target="_blank"〉PubMed〈/a〉
    Keywords: Abatacept ; Animals ; Antigens, CD ; Antigens, CD80/genetics/*immunology/metabolism ; Antigens, Differentiation/immunology/*metabolism ; B-Lymphocytes/*immunology ; Base Sequence ; CTLA-4 Antigen ; Cell Line ; *Immunoconjugates ; Interleukin-2/secretion ; Isoantigens/immunology ; Lymphocyte Activation ; Lymphocyte Culture Test, Mixed ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Mice, Knockout ; Molecular Sequence Data ; Mutation ; T-Lymphocytes/*immunology ; Transfection
    Print ISSN: 0036-8075
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  • 13
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    A detailed genetic map for the X chromosome of the malaria vector, Anopheles gambiae (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-07-30
    Description: Anopheles gambiae, the primary vector of human malaria in Africa, is responsible for approximately a million deaths per year, mostly of children. Despite its significance in disease transmission, this mosquito has not been studied extensively by genetic or molecular techniques. To facilitate studies on this vector, a genetic map has been developed that covers the X chromosome at an average resolution of 2 centimorgans. This map has been integrated with the chromosome banding pattern and used to localize a recessive, sex-linked mutation (white eye) to within 1 centimorgan of flanking markers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zheng, L -- Collins, F H -- Kumar, V -- Kafatos, F C -- New York, N.Y. -- Science. 1993 Jul 30;261(5121):605-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Developmental Biology, Harvard University, Cambridge, MA 02138.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8342025" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Anopheles/*genetics ; Base Sequence ; Chromosome Banding ; *Chromosome Mapping ; Crosses, Genetic ; DNA, Satellite/genetics ; Female ; *Genes, Insect ; Genes, Recessive ; Genetic Markers ; Insect Vectors/*genetics ; Malaria/transmission ; Male ; Molecular Sequence Data ; Mutation ; Recombination, Genetic ; *X Chromosome
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  • 14
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    Altered fluid transport across airway epithelium in cystic fibrosis (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-10-15
    Description: In cystic fibrosis (CF), absence or dysfunction of a phosphorylation-regulated chloride channel [CF transmembrane conductance regulator (CFTR)] leads to the loss or reduction of chloride secretion into the airways. Active sodium absorption is also increased in CF, and both of these ion transport changes could alter fluid transport across the airways. Under baseline conditions, cultured human airway epithelia from normal individuals absorbed fluid, and this absorption was increased in epithelia from patients with CF. In normal and CF epithelial cultures fluid absorption was inhibited by amiloride. Adenosine 3',5'-monophosphate stimulated fluid secretion in normal epithelial cultures but not in cultures from individuals with CF. In contrast, fluid secretion induced by nucleotide triphosphates (uridine triphosphate or adenosine triphosphate) was unaltered in cultures of epithelia from patients with CF, suggesting an approach to the treatment of CF.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jiang, C -- Finkbeiner, W E -- Widdicombe, J H -- McCray, P B Jr -- Miller, S S -- HL 42368/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1993 Oct 15;262(5132):424-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology, University of California, Berkeley 94720.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8211164" target="_blank"〉PubMed〈/a〉
    Keywords: Absorption ; Adenosine Triphosphate/pharmacology ; Adolescent ; Adult ; Amiloride/pharmacology ; Body Fluids/*metabolism ; Cells, Cultured ; Cyclic AMP/pharmacology ; Cystic Fibrosis/*metabolism ; Epithelial Cells ; Epithelium/metabolism ; Female ; Humans ; Male ; Middle Aged ; Nasal Mucosa/cytology/*metabolism ; Sodium/metabolism ; Sodium Channels/metabolism ; Trachea/cytology/*metabolism ; Uridine Triphosphate/pharmacology
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    Selective and ATP-dependent translocation of peptides by the MHC-encoded transporter (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-08-06
    Description: Major histocompatibility complex (MHC) class I molecules present peptides derived from nuclear and cytosolic proteins to CD8+ T cells. These peptides are translocated into the lumen of the endoplasmic reticulum (ER) to associate with class I molecules. Two MHC-encoded putative transporter proteins, TAP1 and TAP2, are required for efficient assembly of class I molecules and presentation of endogenous peptides. Expression of TAP1 and TAP2 in a mutant cell line resulted in the delivery of an 11-amino acid oligomer model peptide to the ER. Peptide translocation depended on the sequence of the peptide, was adenosine triphosphate (ATP)-dependent, required ATP hydrolysis, and was inhibited in a concentration-dependent manner.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Neefjes, J J -- Momburg, F -- Hammerling, G J -- New York, N.Y. -- Science. 1993 Aug 6;261(5122):769-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Netherlands Cancer Institute, Amsterdam.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8342042" target="_blank"〉PubMed〈/a〉
    Keywords: *ATP-Binding Cassette Transporters ; Adenosine Triphosphate/*metabolism ; Amino Acid Sequence ; Animals ; Biological Transport ; Carrier Proteins/*metabolism ; Cell Line ; Cell Membrane Permeability ; Endoplasmic Reticulum/metabolism ; Glycosylation ; Histocompatibility Antigens Class II/*metabolism ; Molecular Sequence Data ; Oligopeptides/*metabolism ; Rats ; T-Lymphocytes, Cytotoxic/*metabolism ; Transfection
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  • 16
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    Cloning the differences between two complex genomes (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-02-12
    Description: The analysis of the differences between two complex genomes holds promise for the discovery of infectious agents and probes useful for genetic studies. A system was developed in which subtractive and kinetic enrichment was used to purify restriction endonuclease fragments present in one population of DNA fragments but not in another. Application of this method to DNA populations of reduced complexity ("representations") resulted in the isolation of probes to viral genomes present as single copies in human DNA, and probes that detect polymorphisms between two individuals. In principle, this system, called representational difference analysis (RDA), may also be used for isolating probes linked to sites of genomic rearrangements, whether occurring spontaneously and resulting in genetic disorders or cancer, or programmed during differentiation and development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lisitsyn, N -- Wigler, M -- New York, N.Y. -- Science. 1993 Feb 12;259(5097):946-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cold Spring Harbor Laboratory, NY 11724.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8438152" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoviridae/genetics ; Bacteriophage lambda/genetics ; Base Sequence ; *Cloning, Molecular ; DNA/*chemistry ; DNA Probes ; DNA, Viral ; Female ; Gene Deletion ; Genetic Diseases, Inborn/genetics ; Humans ; Male ; Molecular Sequence Data ; Neoplasms/genetics ; Nucleic Acid Hybridization/methods ; Polymerase Chain Reaction ; Polymorphism, Genetic ; Sequence Homology, Nucleic Acid
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 17
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    A mechanism for virilization of female spotted hyenas in utero (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-06-25
    Description: Female spotted hyenas exhibit male-like genitalia and dominance over males. Hyena ovarian tissues incubated in vitro produced large quantities of the steroid hormone precursor androstenedione. The activity of aromatase, which converts androstenedione to estrogen, was one-twentieth as great in hyena versus human placental homogenates. In comparison, the activity of 17 beta-hydroxysteroid dehydrogenase, which converts androstenedione to testosterone, was equal in the two homogenates. The limited aromatase activity may allow the hyena placenta to convert high circulating concentrations of androstenedione to testosterone, which results in virilization of the fetal external genitalia and possibly destruction of fetal ovarian follicles. Androstenedione production by residual ovarian stromal cells during reproductive life accounts for the epigenetic transmission of virilization in female spotted hyenas.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yalcinkaya, T M -- Siiteri, P K -- Vigne, J L -- Licht, P -- Pavgi, S -- Frank, L G -- Glickman, S E -- CA-39825/CA/NCI NIH HHS/ -- MH-39917/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1993 Jun 25;260(5116):1929-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Obstetrics, Gynecology, University of California School of Medicine, San Francisco 94143.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8391165" target="_blank"〉PubMed〈/a〉
    Keywords: 17-Hydroxysteroid Dehydrogenases/metabolism ; Animals ; Aromatase/*metabolism ; Carnivora/embryology/*metabolism ; Corpus Luteum/metabolism ; Estradiol/biosynthesis ; Female ; Humans ; In Vitro Techniques ; Luteinizing Hormone/pharmacology ; Male ; Ovary/*metabolism ; Placenta/enzymology/*metabolism ; Pregnancy ; Progesterone/biosynthesis ; *Sex Differentiation ; Testosterone/*biosynthesis
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    Australian pest control by virus causes concern (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-08-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morell, V -- New York, N.Y. -- Science. 1993 Aug 6;261(5122):683-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8342036" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Australia ; Contraception, Immunologic/*veterinary ; Ecology ; Female ; *Foxes/microbiology ; *Genetic Engineering ; Male ; Myxoma virus/genetics ; Pest Control, Biological/*methods ; *Rabbits/microbiology ; Viruses/*genetics
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    Reversal of left-right asymmetry: a situs inversus mutation (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-04-30
    Description: A recessive mutation was identified in a family of transgenic mice that resulted in a reversal of left-right polarity (situs inversus) in 100 percent of the homozygous transgenic mice tested. Sequences that flanked the transgenic integration site were cloned and mapped to mouse chromosome 4, between the Tsha and Hxb loci. During early embryonic development, the direction of postimplantation turning, one of the earliest manifestations of left-right asymmetry, was reversed in homozygous transgenic embryos. This insertional mutation identifies a gene that controls embryonic turning and visceral left-right polarity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yokoyama, T -- Copeland, N G -- Jenkins, N A -- Montgomery, C A -- Elder, F F -- Overbeek, P A -- HD25340/HD/NICHD NIH HHS/ -- N01-CO-74101/CO/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 Apr 30;260(5108):679-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Baylor College of Medicine, Houston, TX 77030.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8480178" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Chromosome Mapping ; Cloning, Molecular ; Embryonic and Fetal Development/*genetics ; Female ; *Genes, Recessive ; Homozygote ; Male ; Mice ; Mice, Transgenic ; Mutagenesis, Insertional ; Situs Inversus/*genetics
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    Evidence found for a possible 'aggression gene' (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-06-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morell, V -- New York, N.Y. -- Science. 1993 Jun 18;260(5115):1722-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8511575" target="_blank"〉PubMed〈/a〉
    Keywords: *Aggression ; Female ; *Genes, Recessive ; Genetic Diseases, Inborn ; Humans ; Male ; Monoamine Oxidase/deficiency/*genetics ; Mutation ; Pedigree ; *X Chromosome
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  • 21
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    MHC-restricted depletion of human myelin basic protein-reactive T cells by T cell vaccination (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-09-10
    Description: Activated autoreactive T cells are potentially pathogenic and regulated by clonotypic networks. Experimental autoimmune diseases can be treated by inoculation with autoreactive T cells (T cell vaccination). In the present study, patients with multiple sclerosis were inoculated with irradiated myelin basic protein (MBP)-reactive T cells. T cell responses to the inoculates were induced to deplete circulating MBP-reactive T cells in the recipients. Regulatory T cell lines isolated from the recipients inhibited T cells used for vaccination. The cytotoxicity of the CD8+ T cell lines was restricted by major histocompatibility antigens. Thus, clonotypic interactions regulating autoreactive T cells in humans can be induced by T cell vaccination.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, J -- Medaer, R -- Stinissen, P -- Hafler, D -- Raus, J -- New York, N.Y. -- Science. 1993 Sep 10;261(5127):1451-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Multiple Sclerosis Research Unit, Dr. L. Willems Instituut, Diepenbeek, Belgium.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7690157" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Antigens, CD4/analysis ; Antigens, CD8/analysis ; Cell Line ; Epitopes/immunology ; Female ; Humans ; *Immunotherapy, Adoptive ; Lymphocyte Activation ; Male ; Middle Aged ; Multiple Sclerosis/immunology/*therapy ; Myelin Basic Protein/*immunology ; Receptors, Antigen, T-Cell, alpha-beta/immunology ; T-Lymphocytes/*immunology ; Vaccination
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  • 22
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    Effects of cAMP simulate a late stage of LTP in hippocampal CA1 neurons (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-06-11
    Description: Hippocampal long-term potentiation (LTP) is thought to serve as an elementary mechanism for the establishment of certain forms of explicit memory in the mammalian brain. As is the case with behavioral memory, LTP in the CA1 region has stages: a short-term early potentiation lasting 1 to 3 hours, which is independent of protein synthesis, precedes a later, longer lasting stage (L-LTP), which requires protein synthesis. Inhibitors of cyclic adenosine monophosphate (cAMP)-dependent protein kinase (PKA) blocked L-LTP, and analogs of cAMP induced a potentiation that blocked naturally induced L-LTP. The action of the cAMP analog was blocked by inhibitors of protein synthesis. Thus, activation of PKA may be a component of the mechanism that generates L-LTP.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frey, U -- Huang, Y Y -- Kandel, E R -- GM32099/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1993 Jun 11;260(5114):1661-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Neurobiology and Behavior, Howard Hughes Medical Institute, College of Physicians and Surgeons, Columbia University, New York, NY 10032.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8389057" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials/drug effects/physiology ; Animals ; Cyclic AMP/*physiology ; Hippocampus/cytology/drug effects/*physiology ; In Vitro Techniques ; Male ; Memory/physiology ; Neurons/drug effects/*physiology ; Protein Kinases/physiology ; Rats ; Rats, Sprague-Dawley ; Receptors, N-Methyl-D-Aspartate/physiology ; Second Messenger Systems/physiology ; Time Factors
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  • 23
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    IL-6-induced homodimerization of gp130 and associated activation of a tyrosine kinase (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-06-18
    Description: The biological functions of interleukin-6 (IL-6) are mediated through a signal-transducing component of the IL-6 receptor, gp130, which is associated with the ligand-occupied IL-6 receptor (IL-6R) protein. Binding of IL-6 to IL-6R induced disulfide-linked homodimerization of gp130. Tyrosine kinase activity was associated with dimerized but not monomeric gp130 protein. Substitution of serine for proline residues 656 and 658 in the cytoplasmic motif abolished tyrosine kinase activation and cellular responses but not homodimerization of gp130. The IL-6-induced gp130 homodimer appears to be similar in function to the heterodimer formed between the leukemia inhibitory factor (LIF) receptor (LIFR) and gp130 in response to the LIF or ciliary neurotrophic factor (CNTF). Thus, a general first step in IL-6-related cytokine signaling may be the dimerization of signal-transducing molecules and activation of associated tyrosine kinases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Murakami, M -- Hibi, M -- Nakagawa, N -- Nakagawa, T -- Yasukawa, K -- Yamanishi, K -- Taga, T -- Kishimoto, T -- New York, N.Y. -- Science. 1993 Jun 18;260(5115):1808-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Molecular and Cellular Biology, Osaka University, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8511589" target="_blank"〉PubMed〈/a〉
    Keywords: *Antigens, CD ; Cytokine Receptor gp130 ; Enzyme Activation ; Haptoglobins/biosynthesis ; Humans ; Interleukin-6/*metabolism/pharmacology ; Macromolecular Substances ; Membrane Glycoproteins/chemistry/*metabolism ; Phosphorylation ; Protein-Tyrosine Kinases/*metabolism ; Receptors, Immunologic/*metabolism ; Receptors, Interleukin-6 ; *Signal Transduction ; Transfection ; Tumor Cells, Cultured
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    Genetic models for studying cancer susceptibility (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-02-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Friend, S H -- New York, N.Y. -- Science. 1993 Feb 5;259(5096):774-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Genetics, Massachusetts General Hospital Cancer Center, Charlestown 02129.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8430329" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Crosses, Genetic ; Cyprinodontiformes/*genetics ; Female ; Fish Diseases/*genetics ; Genes, Tumor Suppressor ; *Genetic Predisposition to Disease ; Male ; Melanoma/genetics/*veterinary ; Models, Genetic ; Neoplasms/*genetics ; Proto-Oncogenes
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    Genotypic and phenotypic characterization of HIV-1 patients with primary infection (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-08-27
    Description: Better characterization of human immunodeficiency virus-type 1 (HIV-1) in patients with primary infection has important implications for the development of an acquired immunodeficiency syndrome (AIDS) vaccine because vaccine strategies should target viral isolates with the properties of transmitted viruses. In five HIV-1 seroconverters, the viral phenotype was found to be uniformly macrophage-tropic and non-syncytium-inducing. Furthermore, the viruses were genotypically homogeneous within each patient, but a common signature sequence was not discernible among transmitted viruses. In the two cases where the sexual partners were also studied, the sequences of the transmitted viruses matched best with minor variants in the blood of the transmitters. There was also a stronger pressure to conserve sequences in gp120 than in gp41, nef, and p17, suggesting that a selective mechanism is involved in transmission.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhu, T -- Mo, H -- Wang, N -- Nam, D S -- Cao, Y -- Koup, R A -- Ho, D D -- AI24030/AI/NIAID NIH HHS/ -- AI25541/AI/NIAID NIH HHS/ -- AI27742/AI/NIAID NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1993 Aug 27;261(5125):1179-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Aaron Diamond AIDS Research Center, New York University School of Medicine, NY 10016.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8356453" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Cell Line ; Female ; Gene Products, gag/chemistry/genetics ; Genes, Viral ; Genotype ; Giant Cells/physiology ; HIV Antigens/chemistry/genetics ; HIV Envelope Protein gp120/chemistry/*genetics ; HIV Envelope Protein gp41/chemistry/genetics ; HIV Infections/*microbiology/transmission ; HIV Seropositivity/microbiology ; HIV-1/chemistry/*genetics/*physiology ; Humans ; Macrophages ; Male ; Molecular Sequence Data ; Phenotype ; Sequence Alignment ; Sexual Partners ; *Viral Proteins ; Virus Replication ; gag Gene Products, Human Immunodeficiency Virus
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    Clues to the pathogenesis of familial colorectal cancer (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-05-07
    Description: A predisposition to colorectal cancer is shown to be linked to markers on chromosome 2 in some families. Molecular features of "familial" cancers were compared with those of sporadic colon cancers. Neither the familial nor sporadic cancers showed loss of heterozygosity for chromosome 2 markers, and the incidence of mutations in KRAS, P53, and APC was similar in the two groups of tumors. Most of the familial cancers, however, had widespread alterations in short repeated DNA sequences, suggesting that numerous replication errors had occurred during tumor development. Thirteen percent of sporadic cancers had identical abnormalities and these cancers shared biologic properties with the familial cases. These data suggest a mechanism for familial tumorigenesis different from that mediated by classic tumor suppressor genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aaltonen, L A -- Peltomaki, P -- Leach, F S -- Sistonen, P -- Pylkkanen, L -- Mecklin, J P -- Jarvinen, H -- Powell, S M -- Jen, J -- Hamilton, S R -- CA 35494/CA/NCI NIH HHS/ -- CA 47527/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 May 7;260(5109):812-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Genetics, University of Helsinki, Finland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8484121" target="_blank"〉PubMed〈/a〉
    Keywords: Chromosome Mapping ; *Chromosomes, Human, Pair 2 ; Colonic Neoplasms/*genetics ; Colorectal Neoplasms/*genetics ; DNA, Satellite/genetics ; Female ; Genetic Markers ; Humans ; Lod Score ; Male ; Mutation ; Pedigree ; Polymorphism, Genetic ; Rectal Neoplasms/genetics ; Repetitive Sequences, Nucleic Acid
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    The pluses of subtraction (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-02-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Myers, R M -- New York, N.Y. -- Science. 1993 Feb 12;259(5097):942-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, University of California, San Francisco 94143-0444.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8094900" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cloning, Molecular ; DNA/*chemistry ; DNA Probes ; Female ; Gene Deletion ; Humans ; Male ; Nucleic Acid Hybridization/*methods ; Polymerase Chain Reaction ; Polymorphism, Restriction Fragment Length
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  • 28
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    Progression to diabetes in nonobese diabetic (NOD) mice with transgenic T cell receptors (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-02-19
    Description: The T cell receptor (TCR) requirements in the pathogenesis of insulin-dependent diabetes were examined with transgenic NOD mice bearing nondisease-related TCR alpha and beta chains. In both TCR beta and TCR alpha beta transgenic NOD mice the beta chain transgene was expressed by 〉 98% of peripheral T cells. The alpha chain transgene was also highly expressed. Insulitis developed in both sets of transgenic animals with most of the lymphocytes in the lesion expressing the transgenic beta chain and with depletion of the endogenous TCR V beta genes. Nonetheless, NOD animals transgenic for TCR beta and TCR alpha beta developed diabetes similar to controls. Thus, skewing the TCR repertoire did not diminish autoimmune susceptibility in NOD mice.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lipes, M A -- Rosenzweig, A -- Tan, K N -- Tanigawa, G -- Ladd, D -- Seidman, J G -- Eisenbarth, G S -- New York, N.Y. -- Science. 1993 Feb 19;259(5098):1165-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Joslin Diabetes Center, Harvard Medical School, Brigham and Women's Hospital, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8267690" target="_blank"〉PubMed〈/a〉
    Keywords: Aging/physiology ; Animals ; Base Sequence ; Crosses, Genetic ; Diabetes Mellitus, Type 2/genetics/immunology/*physiopathology ; Female ; Gene Rearrangement, T-Lymphocyte ; Islets of Langerhans/immunology/pathology ; Male ; Mice ; Mice, Inbred NOD/*physiology ; Mice, Transgenic ; Molecular Sequence Data ; Oligodeoxyribonucleotides ; Pancreatic Diseases/genetics/immunology/pathology ; Polymerase Chain Reaction/methods ; Receptors, Antigen, T-Cell, alpha-beta/genetics/*physiology ; T-Lymphocytes/*immunology/pathology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Dormancy of inhibitory interneurons in a model of temporal lobe epilepsy (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-01-01
    Description: In humans temporal lobe epilepsy (TLE) is characterized by recurrent seizures, neuronal hyperexcitability, and selective loss of certain neuronal populations in the hippocampus. Animal models of the condition indicate that a diminution of inhibition mediated by gamma-aminobutyric acid (GABA) accounts for the altered function, and it has been hypothesized that the diminution arises because GABAergic basket interneurons are "dormant" as a result of their being disconnected from excitatory inputs. In hippocampal slices, inhibitory postsynaptic potentials (IPSPs) were elicited in CA1 pyramidal cells by activation of basket cells; responses from an animal model of TLE were compared to those from control tissue. IPSPs evoked indirectly by activation of terminals that then excited basket cells were reduced in the epileptic tissue, whereas IPSPs evoked by direct activation of basket cells, when excitatory neurotransmission was blocked, were not different from controls. These results provide support for the "dormant basket cell" hypothesis and have implications for the pathophysiology and treatment of human TLE.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bekenstein, J W -- Lothman, E W -- New York, N.Y. -- Science. 1993 Jan 1;259(5091):97-100.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, University of Virginia Health Sciences Center, Charlottesville 22908.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8093417" target="_blank"〉PubMed〈/a〉
    Keywords: 6-Cyano-7-nitroquinoxaline-2,3-dione ; Action Potentials ; Animals ; Baclofen/analogs & derivatives/pharmacology ; Electric Stimulation ; Epilepsy, Temporal Lobe/*physiopathology ; Evoked Potentials ; Hippocampus/*physiology/*physiopathology ; In Vitro Techniques ; Interneurons/drug effects/*physiology ; Male ; Membrane Potentials ; Picrotoxin/pharmacology ; Pyramidal Tracts/drug effects/*physiology ; Quinoxalines/pharmacology ; Rats ; Rats, Sprague-Dawley ; Receptors, GABA-A/physiology ; Receptors, N-Methyl-D-Aspartate/physiology ; Status Epilepticus/*physiopathology
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    Gene dose of apolipoprotein E type 4 allele and the risk of Alzheimer's disease in late onset families (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-08-13
    Description: The apolipoprotein E type 4 allele (APOE-epsilon 4) is genetically associated with the common late onset familial and sporadic forms of Alzheimer's disease (AD). Risk for AD increased from 20% to 90% and mean age at onset decreased from 84 to 68 years with increasing number of APOE-epsilon 4 alleles in 42 families with late onset AD. Thus APOE-epsilon 4 gene dose is a major risk factor for late onset AD and, in these families, homozygosity for APOE-epsilon 4 was virtually sufficient to cause AD by age 80.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Corder, E H -- Saunders, A M -- Strittmatter, W J -- Schmechel, D E -- Gaskell, P C -- Small, G W -- Roses, A D -- Haines, J L -- Pericak-Vance, M A -- New York, N.Y. -- Science. 1993 Aug 13;261(5123):921-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Joseph and Kathleen Bryan Alzheimer's Disease Research Center, Duke University Medical Center, Durham, NC 27710.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8346443" target="_blank"〉PubMed〈/a〉
    Keywords: Aged ; Aged, 80 and over ; Aging ; *Alleles ; Alzheimer Disease/*genetics/metabolism/mortality ; Amyloid beta-Peptides/metabolism ; Apolipoprotein E4 ; Apolipoproteins E/*genetics/physiology ; Female ; *Gene Frequency ; Genotype ; Homozygote ; Humans ; Linkage Disequilibrium ; Male ; Risk Factors ; Survival Rate
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    Tumor rejection after direct costimulation of CD8+ T cells by B7-transfected melanoma cells (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-01-15
    Description: A variety of tumors are potentially immunogenic but do not stimulate an effective anti-tumor immune response in vivo. Tumors may be capable of delivering antigen-specific signals to T cells, but may not deliver the costimulatory signals necessary for full activation of T cells. Expression of the costimulatory ligand B7 on melanoma cells was found to induce the rejection of a murine melanoma in vivo. This rejection was mediated by CD8+ T cells; CD4+ T cells were not required. These results suggest that B7 expression renders tumor cells capable of effective antigen presentation, leading to their eradication in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Townsend, S E -- Allison, J P -- CA57986/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 Jan 15;259(5093):368-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology, University of California, Berkeley 94720.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7678351" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigen-Presenting Cells/immunology ; Antigens, CD80 ; Antigens, Surface/genetics/*immunology ; CD4-Positive T-Lymphocytes/immunology ; Cross Reactions ; Female ; Gene Expression Regulation ; Genetic Vectors ; Ligands ; *Lymphocyte Activation ; Melanoma/*immunology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C3H ; Mice, Nude ; T-Lymphocytes, Regulatory/*immunology ; Transfection ; Tumor Cells, Cultured
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    Primers for mitochondrial DNA replication generated by endonuclease G (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-08-06
    Description: Endonuclease G (Endo G) is widely distributed among animals and cleaves DNA at double-stranded (dG)n.(dC)n and at single-stranded (dC)n tracts. Endo G is synthesized as a propeptide with an amino-terminal presequence that targets the nuclease to mitochondria. Endo G can also be detected in extranucleolar chromatin. In addition to deoxyribonuclease activities, Endo G also has ribonuclease (RNase) and RNase H activities and specifically cleaves mouse mitochondrial RNA and DNA-RNA substrates containing the origin of heavy-strand DNA replication (OH). The cleavage sites match those found in vivo, indicating that Endo G is capable of generating the RNA primers required by DNA polymerase gamma to initiate replication of mitochondrial DNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cote, J -- Ruiz-Carrillo, A -- New York, N.Y. -- Science. 1993 Aug 6;261(5122):765-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Research Center, Medical School of Laval University, L'Hotel-Dieu de Quebec, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7688144" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; Cell Nucleus/enzymology ; DNA/genetics ; *DNA Replication ; DNA, Mitochondrial/*metabolism ; Endodeoxyribonucleases/chemistry/genetics/*metabolism ; Genetic Vectors ; Mitochondria/enzymology ; Molecular Sequence Data ; RNA/*metabolism ; Ribonuclease H/metabolism ; Ribonucleases/metabolism ; Transfection
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    Methylation and imprinting: from host defense to gene regulation? (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-04-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barlow, D P -- New York, N.Y. -- Science. 1993 Apr 16;260(5106):309-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Research Institute of Molecular Pathology, Vienna, Austria.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8469984" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; DNA/genetics/*metabolism ; *Dosage Compensation, Genetic ; Embryo, Mammalian/metabolism ; Fathers ; Female ; *Gene Expression Regulation ; Insulin-Like Growth Factor II/genetics ; Male ; Methylation ; Mice ; Models, Genetic ; Mothers ; Oocytes/metabolism ; Receptor, IGF Type 2/genetics ; Spermatozoa/metabolism
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    The missing AIDS science (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-08-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leccese, A P -- New York, N.Y. -- Science. 1993 Aug 6;261(5122):665.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8204122" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*prevention & control ; Adolescent ; Adult ; Female ; Humans ; Male ; Risk-Taking ; *Sexual Behavior ; *Street Drugs ; *Substance-Related Disorders
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    Interleukin-2 receptor gamma chain: a functional component of the interleukin-4 receptor (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-12-17
    Description: The interleukin-2 (IL-2) receptor gamma chain (IL-2R gamma) is an essential component of high- and intermediate-affinity IL-2 receptors. IL-2R gamma was demonstrated to be a component of the IL-4 receptor on the basis of chemical cross-linking data, the ability of IL-2R gamma to augment IL-4 binding affinity, and the requirement for IL-2R gamma in IL-4-mediated phosphorylation of insulin receptor substrate-1. The observation that IL-2R gamma is a functional component of the IL-4 receptor, together with the finding that IL-2R gamma associates with the IL-7 receptor, begins to elucidate why deficiency of this common gamma chain (gamma c) has a profound effect on lymphoid function and development, as seen in X-linked severe combined immunodeficiency.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Russell, S M -- Keegan, A D -- Harada, N -- Nakamura, Y -- Noguchi, M -- Leland, P -- Friedmann, M C -- Miyajima, A -- Puri, R K -- Paul, W E -- New York, N.Y. -- Science. 1993 Dec 17;262(5141):1880-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section on Pulmonary and Molecular Immunology, National Heart, Lung, and Blood Institute, NIH, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8266078" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Line ; Cell Line, Transformed ; Genetic Linkage ; Humans ; Insulin Receptor Substrate Proteins ; Interleukin-4/metabolism ; L Cells (Cell Line) ; Mice ; Molecular Sequence Data ; Phosphoproteins/metabolism ; Phosphorylation ; Receptors, Interleukin-2/chemistry/genetics/*metabolism ; Receptors, Interleukin-4 ; Receptors, Mitogen/chemistry/genetics/*metabolism ; Severe Combined Immunodeficiency/genetics/immunology ; Signal Transduction ; Transfection ; X Chromosome
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    GABA-activated chloride channels in secretory nerve endings (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-01-22
    Description: Neurotransmitters acting on presynaptic terminals regulate synaptic transmission and plasticity. Because of the difficulty of direct electrophysiological recording from small presynaptic terminals, little is known about the ion channels that mediate these actions or about the mechanisms by which transmitter secretion is altered. The patch-clamp technique is used to show that the predominant inhibitory presynaptic neurotransmitter, gamma-aminobutyric acid (GABA), activates a GABAA receptor and gates a chloride channel in the membranes of peptidergic nerve terminals of the posterior pituitary. The opening of a chloride channel by GABA weakly depolarizes the nerve terminal membrane and blocks action potentials. In this way, GABA limits secretion by retarding the spread of excitation into the terminal arborization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, S J -- Jackson, M B -- NS30016/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1993 Jan 22;259(5094):531-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, University of Wisconsin Medical School, Madison 53706.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8380942" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bicuculline/pharmacology ; Chlordiazepoxide/pharmacology ; Chloride Channels ; Chlorides/*metabolism ; GABA-A Receptor Antagonists ; Male ; Membrane Potentials/drug effects ; Membrane Proteins/drug effects/*physiology ; Muscimol/pharmacology ; Nerve Endings/drug effects/*physiology ; Picrotoxin/pharmacology ; Pituitary Gland, Posterior/drug effects/*physiology ; Rats ; Receptors, GABA-A/*physiology ; gamma-Aminobutyric Acid/*pharmacology
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    New test catches drug-resistant TB in the spotlight (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-05-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 1993 May 7;260(5109):750.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8484114" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Antitubercular Agents/*pharmacology ; Drug Resistance, Microbial ; Luciferases/genetics/metabolism ; *Luminescent Measurements ; Microbial Sensitivity Tests/*methods ; Mycobacterium tuberculosis/*drug effects/genetics/metabolism ; Transfection
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    Naked DNA points way to vaccines (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-03-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, J -- New York, N.Y. -- Science. 1993 Mar 19;259(5102):1691-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8456293" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; DNA, Viral/*genetics/therapeutic use ; Influenza A virus/*genetics/immunology ; Mice ; Nucleoproteins/genetics/immunology ; Orthomyxoviridae Infections/*prevention & control ; *RNA-Binding Proteins ; Transfection ; Viral Core Proteins/genetics/immunology ; Viral Vaccines/*genetics
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    Regulation of V(D)J recombination activator protein RAG-2 by phosphorylation (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-05-14
    Description: Antigen receptor genes are assembled by site-specific DNA rearrangement. The recombination activator genes RAG-1 and RAG-2 are essential for this process, termed V(D)J rearrangement. The activity and stability of the RAG-2 protein have now been shown to be regulated by phosphorylation. In fibroblasts RAG-2 was phosphorylated predominantly at two serine residues, one of which affected RAG-2 activity in vivo. The threonine at residue 490 was phosphorylated by p34cdc2 kinase in vitro; phosphorylation at this site in vivo was associated with rapid degradation of RAG-2. Instability was transferred to chimeric proteins by a 90-residue portion of RAG-2. Mutation of the p34cdc2 phosphorylation site of the tumor suppressor protein p53 conferred a similar phenotype, suggesting that this association between phosphorylation and degradation is a general mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lin, W C -- Desiderio, S -- CA16519/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 May 14;260(5110):953-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, MD 21205.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8493533" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Amino Acid Sequence ; Animals ; CDC2 Protein Kinase/metabolism ; Cell Line ; *DNA-Binding Proteins ; *Gene Rearrangement ; Humans ; Mice ; Molecular Sequence Data ; Mutation ; Nuclear Proteins ; Phosphorylation ; Proteins/chemistry/genetics/*metabolism ; Receptors, Antigen/*genetics ; Recombinant Fusion Proteins/metabolism ; Transfection ; Tumor Suppressor Protein p53/genetics
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    Association between brain temperature and dentate field potentials in exploring and swimming rats (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-02-26
    Description: Attempts to correlate behavioral learning with cellular changes, such as increased synaptic efficacy, have often relied on increased extracellular potentials as an index of enhanced synaptic strength. A recent example is the enlarged excitatory field potentials in the dentate gyrus of rats that are learning spatial relations by exploration. The altered hippocampal field potentials do not reflect learning-specific cellular changes but result from a concomitant rise in brain temperature that is caused by the associated muscular effort. Enhanced dentate field excitatory potentials followed both passive and active heating and were linearly related to the brain temperature. These temperature-related effects may mask any learning-induced changes in field potential.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moser, E -- Mathiesen, I -- Andersen, P -- New York, N.Y. -- Science. 1993 Feb 26;259(5099):1324-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurophysiology, University of Oslo, Norway.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8446900" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/physiology ; Body Temperature ; Cerebellar Nuclei/*physiology ; Hippocampus/*physiology ; Male ; Membrane Potentials ; Physical Exertion ; Rats ; Swimming/physiology
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    Presentation of a viral T cell epitope expressed in the CDR3 region of a self immunoglobulin molecule (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-01-08
    Description: Synthetic peptides corresponding to microbial epitopes stimulate T cell immunity but their immunogenicity is poor and their half-lives are short. A viral epitope inserted into the complementarity-determining region 3 (CDR3) loop of the heavy chain of a self immunoglobulin (Ig) molecule was generated from the Ig context and was presented by I-Ed class II molecules to virus-specific, CD4+ T cells. Chimeric Ig-peptide was presented 100 to 1000 times more efficiently than free synthetic peptide and was able to prime virus-specific T cells in vivo. These features suggest that antigenized Ig can provide an improved and safe vaccine for the presentation of microbial and other peptides.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zaghouani, H -- Steinman, R -- Nonacs, R -- Shah, H -- Gerhard, W -- Bona, C -- AI13013/AI/NIAID NIH HHS/ -- AI18316/AI/NIAID NIH HHS/ -- AI24460/AI/NIAID NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1993 Jan 8;259(5092):224-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, Mount Sinai School of Medicine, New York, NY 10029.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7678469" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigen-Presenting Cells/*immunology ; Antigens, Viral/*immunology ; Arsenic/immunology ; *Arsenicals ; Base Sequence ; CD4-Positive T-Lymphocytes/immunology ; DNA/genetics ; Epitopes/*immunology ; Hemagglutinin Glycoproteins, Influenza Virus ; Hemagglutinins, Viral/genetics/immunology ; Histocompatibility Antigens Class II/immunology ; Immunoglobulin Heavy Chains/genetics/immunology ; Immunoglobulin Variable Region/genetics/immunology ; Immunoglobulins/genetics/*immunology ; Mice ; Mice, Inbred BALB C ; Molecular Sequence Data ; Mutagenesis ; Receptors, Fc/immunology ; Recombinant Fusion Proteins/immunology ; Transfection
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    Mechanism-based inactivation of prostatic acid phosphatase (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-11-26
    Description: Protein phosphatases play important roles in the regulation of cell growth and metabolism, yet little is known about their enzymatic mechanism. By extrapolation from data on inhibitors of other types of hydrolases, an inhibitor of prostatic acid phosphatase was designed that is likely to function as a mechanism-based phosphotyrosine phosphatase inactivator. This molecule, 4-(fluoromethyl)phenyl phosphate, represents a useful paradigm for the design of potent and specific phosphatase inhibitors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Myers, J K -- Widlanski, T S -- R01 GM47918-01/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1993 Nov 26;262(5138):1451-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Indiana University, Bloomington 47405.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8248785" target="_blank"〉PubMed〈/a〉
    Keywords: Acid Phosphatase/*antagonists & inhibitors/metabolism ; Alkylation ; Binding Sites ; Drug Design ; Humans ; Hydrolysis ; Kinetics ; Male ; Organophosphorus Compounds/metabolism/*pharmacology ; Prostate/*enzymology
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    Generation of a mouse strain that produces immunoglobulin kappa chains with human constant regions (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-11-19
    Description: Humanized antibodies are highly efficient as immunotherapeutic reagents and have many advantages over rodent antibodies. A mouse strain was generated by gene targeting to replace the mouse kappa light chain constant (C) region gene with the human C kappa gene. Mice homozygous for the replacement mutation (C kappa R) produced normal concentrations of serum antibodies, most of which carry chimeric kappa light chains, and mounted normal immune responses to hapten-protein conjugates. This technology provides a feasible option for the generation of high-affinity humanized antibodies by means of the powerful somatic hypermutation-selection mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zou, Y R -- Gu, H -- Rajewsky, K -- New York, N.Y. -- Science. 1993 Nov 19;262(5137):1271-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Genetics, University of Cologne, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8235658" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; B-Lymphocytes/*immunology ; Base Sequence ; Gene Rearrangement ; *Genes, Immunoglobulin ; Humans ; Immunoglobulin Constant Regions/*biosynthesis/genetics ; Immunoglobulin Isotypes/biosynthesis ; Immunoglobulin kappa-Chains/*biosynthesis/genetics ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; Mutation ; Polymerase Chain Reaction ; Recombinant Fusion Proteins/biosynthesis ; Stem Cells ; Transfection
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Nitric oxide and carbon monoxide produce activity-dependent long-term synaptic enhancement in hippocampus (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-06-25
    Description: Nitric oxide (NO) and carbon monoxide (CO) may act as retrograde messages for long-term potentiation (LTP) in the hippocampus. Zinc protoporphyrin IX, an inhibitor of the enzyme that produces CO, blocked induction of LTP in the CA1 region of hippocampal slices. Application of either NO or CO to slices produced a rapid and long-lasting increase in the size of evoked synaptic potentials if, and only if, the application occurred at the same time as weak tetanic stimulation. This long-term enhancement was spatially restricted to synapses from active presynaptic fibers and appeared to involve mechanisms utilized by LTP, occluding the subsequent induction of LTP by strong tetanic stimulation. The enhancement by NO and CO was not blocked by an N-methyl-D-aspartate (NMDA) receptor blocker, suggesting that NO and CO act downstream from the NMDA receptor. Also, CO produced long-term enhancement when paired with low-frequency stimulation. These results are consistent with the hypothesis that NO and CO, either alone or in combination, serve as retrograde messages that produce activity-dependent presynaptic enhancement during LTP.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhuo, M -- Small, S A -- Kandel, E R -- Hawkins, R D -- AG08702/AG/NIA NIH HHS/ -- MH45923/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1993 Jun 25;260(5116):1946-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Neurobiology and Behavior, College of Physicians and Surgeons, Columbia University, New York, NY.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8100368" target="_blank"〉PubMed〈/a〉
    Keywords: 6-Cyano-7-nitroquinoxaline-2,3-dione ; Animals ; Carbon Monoxide/*pharmacology ; Electric Stimulation ; Guinea Pigs ; Hippocampus/drug effects/*physiology ; In Vitro Techniques ; Male ; Membrane Potentials/drug effects ; Nitric Oxide/*pharmacology ; Protoporphyrins/pharmacology ; Quinoxalines/pharmacology ; Signal Transduction/drug effects ; Synapses/drug effects/*physiology
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    To Be2+ or not to Be2+: immunogenetics and occupational exposure (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-10-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Newman, L S -- ES00173/ES/NIEHS NIH HHS/ -- ES06538/ES/NIEHS NIH HHS/ -- HL273353/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1993 Oct 8;262(5131):197-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Occupational and Environmental Medicine Division, National Jewish Center for Immunology and Respiratory Medicine, Denver, CO.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8105535" target="_blank"〉PubMed〈/a〉
    Keywords: Antigen-Presenting Cells/immunology ; Berylliosis/*etiology/genetics/immunology/prevention & control ; Beryllium/*adverse effects/immunology ; Female ; Genes, MHC Class II ; Genetic Markers ; Glutamates ; Glutamic Acid ; HLA-DP Antigens/chemistry/*genetics/immunology ; Humans ; Male ; *Occupational Exposure ; Risk Factors ; T-Lymphocytes, Helper-Inducer/immunology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Evidence of genetic heterogeneity in the long QT syndrome (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-06-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Benhorin, J -- Kalman, Y M -- Medina, A -- Towbin, J -- Rave-Harel, N -- Dyer, T D -- Blangero, J -- MacCluer, J W -- Kerem, B S -- 5R01-HL-33843/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1993 Jun 25;260(5116):1960-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8316839" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Alleles ; Child ; Female ; Genetic Linkage ; Humans ; Long QT Syndrome/*genetics ; Male ; Pedigree ; Phenotype
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    Interleukin-2 receptor gamma chain: a functional component of the interleukin-7 receptor (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-12-17
    Description: The interleukin-2 receptor gamma chain (IL-2R gamma) is a necessary component of functional IL-2 receptors. IL-2R gamma mutations result in X-linked severe combined immunodeficiency (XSCID) in humans, a disease characterized by the presence of few or no T cells. In contrast, SCID patients with IL-2 deficiency and IL-2-deficient mice have normal numbers of T cells, suggesting that IL-2R gamma is part of more than one cytokine receptor. By using chemical cross-linking, IL-2R gamma was shown to be physically associated with the IL-7 receptor. The presence of IL-2R gamma augmented both IL-7 binding affinity and the efficiency of internalization of IL-7. These findings may help explain the defects of XSCID. Given its role in more than one cytokine receptor system, the common gamma chain (gamma c) is proposed as the designation for IL-2R gamma.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Noguchi, M -- Nakamura, Y -- Russell, S M -- Ziegler, S F -- Tsang, M -- Cao, X -- Leonard, W J -- New York, N.Y. -- Science. 1993 Dec 17;262(5141):1877-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section on Pulmonary and Molecular Immunology, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8266077" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/immunology ; Cell Line ; Genetic Linkage ; Interleukin-7/*metabolism ; L Cells (Cell Line) ; Mice ; Receptors, Interleukin/chemistry/genetics/*metabolism ; Receptors, Interleukin-2/chemistry/genetics/*metabolism ; Receptors, Interleukin-7 ; Severe Combined Immunodeficiency/genetics/immunology ; T-Lymphocytes/immunology ; Transfection ; X Chromosome
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    Nocturnal researchers tune their ears to our ancestors (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-07-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Culotta, E -- New York, N.Y. -- Science. 1993 Jul 2;261(5117):30-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8316854" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Communication ; Animals ; *Behavior, Animal ; Female ; Homing Behavior ; Male ; *Strepsirhini ; Vocalization, Animal
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    Evolutionists take the long view on sex and violence (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-08-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibbons, A -- New York, N.Y. -- Science. 1993 Aug 20;261(5124):987-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8351524" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal ; *Biological Evolution ; Child ; *Child Abuse ; Female ; *Homicide ; Humans ; Male ; *Parents ; *Warfare
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    Antagonism of catecholamine receptor signaling by expression of cytoplasmic domains of the receptors (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-03-05
    Description: The actions of many hormones and neurotransmitters are mediated by the members of a superfamily of receptors coupled to heterotrimeric guanine nucleotide-binding proteins (G proteins). These receptors are characterized by a highly conserved topographical arrangement in which seven transmembrane domains are connected by intracellular and extracellular loops. The interaction between these receptors and G proteins is mediated in large part by the third intracellular loop of the receptor. Coexpression of the third intracellular loop of the alpha 1B-adrenergic receptor with its parent receptor inhibited receptor-mediated activation of phospholipase C. The inhibition extended to the closely related alpha 1C-adrenergic receptor subtype, but not the phospholipase C-coupled M1 muscarinic acetylcholine receptor nor the adenylate cyclase-coupled D1A dopamine receptor. These results suggest that the receptor-G protein interface may represent a target for receptor antagonist drugs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Luttrell, L M -- Ostrowski, J -- Cotecchia, S -- Kendall, H -- Lefkowitz, R J -- HL16037/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1993 Mar 5;259(5100):1453-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Duke University Medical Center, Durham, NC 27710.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8383880" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Cell Line ; Cloning, Molecular ; Cyclic AMP/metabolism ; Cytoplasm/metabolism ; GTP-Binding Proteins/*metabolism ; Globins/genetics ; Glutathione Transferase/genetics/metabolism ; Humans ; Inositol Phosphates/metabolism ; Kinetics ; Molecular Sequence Data ; Muscarinic Antagonists ; Oligodeoxyribonucleotides ; Plasmids ; Protein Structure, Secondary ; Receptors, Adrenergic, alpha/genetics/*metabolism ; Receptors, Dopamine D1/antagonists & inhibitors/genetics/*metabolism ; Receptors, Muscarinic/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; *Signal Transduction ; Transfection ; Type C Phospholipases/metabolism
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    Where are 'new' diseases born? (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-08-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibbons, A -- New York, N.Y. -- Science. 1993 Aug 6;261(5122):680-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8342035" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brazil/epidemiology ; Disease Vectors ; Ecology ; Epidemiologic Methods ; Female ; Humans ; Infection/*epidemiology/transmission ; Male ; Papua New Guinea/epidemiology ; *Trees ; Tropical Medicine
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    Inhibition of viral replication by interferon-gamma-induced nitric oxide synthase (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-09-10
    Description: Interferons (IFNs) induce antiviral activity in many cell types. The ability of IFN-gamma to inhibit replication of ectromelia, vaccinia, and herpes simplex-1 viruses in mouse macrophages correlated with the cells' production of nitric oxide (NO). Viral replication was restored in IFN-gamma-treated macrophages exposed to inhibitors of NO synthase. Conversely, epithelial cells with no detectable NO synthesis restricted viral replication when transfected with a complementary DNA encoding inducible NO synthase or treated with organic compounds that generate NO. In mice, an inhibitor of NO synthase converted resolving ectromelia virus infection into fulminant mousepox. Thus, induction of NO synthase can be necessary and sufficient for a substantial antiviral effect of IFN-gamma.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Karupiah, G -- Xie, Q W -- Buller, R M -- Nathan, C -- Duarte, C -- MacMicking, J D -- CA43610/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 Sep 10;261(5127):1445-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7690156" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Oxidoreductases/*biosynthesis/metabolism ; Animals ; Arginine/analogs & derivatives/pharmacology ; Cell Line ; Cells, Cultured ; Ectromelia virus/drug effects/*physiology ; Ectromelia, Infectious/microbiology ; Enzyme Induction ; Female ; Humans ; Interferon-gamma/*pharmacology ; Macrophages/*microbiology ; Mice ; Mice, Inbred C57BL ; Nitric Oxide/metabolism/pharmacology ; Nitric Oxide Synthase ; Simplexvirus/drug effects/physiology ; Transfection ; Vaccinia virus/drug effects/physiology ; *Virus Replication/drug effects ; omega-N-Methylarginine
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    AIDS theories (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-01-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Curtis, T -- New York, N.Y. -- Science. 1993 Jan 1;259(5091):14.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8418488" target="_blank"〉PubMed〈/a〉
    Keywords: *AIDS Vaccines ; Acquired Immunodeficiency Syndrome/immunology/*transmission ; Animals ; Cells, Cultured ; *Hiv-1 ; Haplorhini ; Humans ; Kidney ; Male
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    Malaria: focus on mosquito genes (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-07-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aldhous, P -- New York, N.Y. -- Science. 1993 Jul 30;261(5121):546-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8393586" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Genetically Modified ; Anopheles/*genetics/parasitology ; DNA Transposable Elements ; *Genes, Insect ; Genetic Engineering ; Humans ; Insect Vectors/*genetics/parasitology ; Malaria/*prevention & control/transmission ; Plasmodium/*physiology ; Transfection
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    Multiple defects of immune cell function in mice with disrupted interferon-gamma genes (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-03-19
    Description: Interferon-gamma (IFN-gamma) is a pleiotrophic cytokine with immunomodulatory effects on a variety of immune cells. Mice with a targeted disruption of the IFN-gamma gene were generated. These mice developed normally and were healthy in the absence of pathogens. However, mice deficient in IFN-gamma had impaired production of macrophage antimicrobial products and reduced expression of macrophage major histocompatibility complex class II antigens. IFN-gamma-deficient mice were killed by a sublethal dose of the intracellular pathogen Mycobacterium bovis. Splenocytes exhibited uncontrolled proliferation in response to mitogen and alloantigen. After a mixed lymphocyte reaction, T cell cytolytic activity was enhanced against allogeneic target cells. Resting splenic natural killer cell activity was reduced in IFN-gamma-deficient mice. Thus, IFN-gamma is essential for the function of several cell types of the murine immune system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dalton, D K -- Pitts-Meek, S -- Keshav, S -- Figari, I S -- Bradley, A -- Stewart, T A -- New York, N.Y. -- Science. 1993 Mar 19;259(5102):1739-42.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genentech Inc., South San Francisco, CA 94080.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8456300" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Division ; Cytotoxicity, Immunologic ; Histocompatibility Antigens Class II/immunology ; *Immunity ; Interferon-gamma/*genetics/physiology ; Isoantigens/immunology ; Killer Cells, Natural/immunology ; Lymphocyte Culture Test, Mixed ; Macrophages/immunology ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Mutation ; Mycobacterium bovis ; Nitric Oxide/metabolism ; Spleen/cytology/immunology ; T-Lymphocytes/immunology ; Transfection ; Tuberculosis/immunology
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    Cytoskeletal role in the contractile dysfunction of hypertrophied myocardium (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-04-30
    Description: Cardiac hypertrophy in response to systolic pressure loading frequently results in contractile dysfunction of unknown cause. In the present study, pressure loading increased the microtubule component of the cardiac muscle cell cytoskeleton, which was responsible for the cellular contractile dysfunction observed. The linked microtubule and contractile abnormalities were persistent and thus may have significance for the deterioration of initially compensatory cardiac hypertrophy into congestive heart failure.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tsutsui, H -- Ishihara, K -- Cooper, G 4th -- HL37196/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1993 Apr 30;260(5108):682-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Medical University of South Carolina, Charleston.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8097594" target="_blank"〉PubMed〈/a〉
    Keywords: Actin Cytoskeleton/drug effects/physiology ; Animals ; Cardiomegaly/pathology/*physiopathology ; Cats ; Colchicine/pharmacology ; Cytochalasin D/pharmacology ; Desmin/physiology ; Female ; Heart Septal Defects, Atrial/physiopathology ; Intermediate Filaments/drug effects/physiology ; Male ; Microtubules/drug effects/pathology/*physiology ; *Myocardial Contraction ; Myocardium/*pathology ; Paclitaxel/pharmacology ; Pressure ; Sarcomeres/drug effects/physiology ; Ventricular Function, Right
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    Interspecific and intraspecific horizontal transfer of Wolbachia in Drosophila (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-06-18
    Description: Cytoplasmic incompatibility (CI) in Drosophila simulans is related to infection of the germ line by a rickettsial endosymbiont (genus Wolbachia). Wolbachia were transferred by microinjection of egg cytoplasm into uninfected eggs of both D. simulans and D. melanogaster to generate infected populations. Transinfected strains of D. melanogaster with lower densities of Wolbachia than the naturally infected D. simulans strain did not express high levels of CI. However, transinfected D. melanogaster egg cytoplasm, transferred back into D. simulans, generated infected populations that expressed CI at levels near those of the naturally infected strain. A transinfected D. melanogaster line selected for increased levels of CI expression also displayed increased symbiont densities. These data suggest that a threshold level of infection is required for normal expression of CI and that host factors help determine the density of the symbiont in the host.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boyle, L -- O'Neill, S L -- Robertson, H M -- Karr, T L -- New York, N.Y. -- Science. 1993 Jun 18;260(5115):1796-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Illinois, Urbana 61801.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8511587" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cytoplasm/microbiology/physiology ; Drosophila/*microbiology/physiology ; Drosophila melanogaster/*microbiology/physiology ; Female ; Male ; Microinjections ; Microscopy ; Ovum/microbiology/physiology ; Rickettsiaceae/*physiology
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    Inhibition of transcriptional regulator Yin-Yang-1 by association with c-Myc (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-12-17
    Description: Yin-Yang-1 (YY1) regulates the transcription of many genes, including the oncogenes c-fos and c-myc. Depending on the context, YY1 acts as a transcriptional repressor, a transcriptional activator, or a transcriptional initiator. The yeast two-hybrid system was used to screen a human complementary DNA (cDNA) library for proteins that associate with YY1, and a c-myc cDNA was isolated. Affinity chromatography confirmed that YY1 associates with c-Myc but not with Max. In cotransfections, c-Myc inhibits both the repressor and the activator functions of YY1, which suggests that one way c-Myc acts is by modulating the activity of YY1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shrivastava, A -- Saleque, S -- Kalpana, G V -- Artandi, S -- Goff, S P -- Calame, K -- CA 38571/CA/NCI NIH HHS/ -- GM29361/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1993 Dec 17;262(5141):1889-92.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biophysics, Columbia University College of Physicians and Surgeons, New York, NY 10032.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8266081" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Adenovirus E1A Proteins/metabolism ; Animals ; Basic Helix-Loop-Helix Leucine Zipper Transcription Factors ; Basic-Leucine Zipper Transcription Factors ; DNA-Binding Proteins/antagonists & inhibitors/genetics/*metabolism/pharmacology ; Erythroid-Specific DNA-Binding Factors ; Helix-Loop-Helix Motifs ; Humans ; Mice ; Proto-Oncogene Proteins c-myc/*metabolism/pharmacology ; Recombinant Fusion Proteins/metabolism ; Transcription Factors/antagonists & inhibitors/genetics/*metabolism/pharmacology ; Transfection ; Tumor Cells, Cultured ; Upstream Stimulatory Factors ; YY1 Transcription Factor ; *Zinc Fingers
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    Heterologous protection against influenza by injection of DNA encoding a viral protein (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-03-19
    Description: Cytotoxic T lymphocytes (CTLs) specific for conserved viral antigens can respond to different strains of virus, in contrast to antibodies, which are generally strain-specific. The generation of such CTLs in vivo usually requires endogenous expression of the antigen, as occurs in the case of virus infection. To generate a viral antigen for presentation to the immune system without the limitations of direct peptide delivery or viral vectors, plasmid DNA encoding influenza A nucleoprotein was injected into the quadriceps of BALB/c mice. This resulted in the generation of nucleoprotein-specific CTLs and protection from a subsequent challenge with a heterologous strain of influenza A virus, as measured by decreased viral lung titers, inhibition of mass loss, and increased survival.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ulmer, J B -- Donnelly, J J -- Parker, S E -- Rhodes, G H -- Felgner, P L -- Dwarki, V J -- Gromkowski, S H -- Deck, R R -- DeWitt, C M -- Friedman, A -- New York, N.Y. -- Science. 1993 Mar 19;259(5102):1745-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cancer Research, Merck Research Laboratories, West Point, PA 19486.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8456302" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; DNA, Viral/*genetics/therapeutic use ; Gene Expression ; Genetic Vectors ; Histocompatibility Antigens Class I/immunology ; Immunization ; Influenza A virus/*genetics/immunology/isolation & purification ; Lung/microbiology ; Mice ; Mice, Inbred BALB C ; Molecular Sequence Data ; Muscles/metabolism ; Nucleoproteins/*genetics/*immunology ; Orthomyxoviridae Infections/microbiology/*prevention & control ; Plasmids ; *RNA-Binding Proteins ; T-Lymphocytes, Cytotoxic/immunology ; Transfection ; Viral Core Proteins/*genetics/*immunology ; Viral Vaccines/*genetics
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    NF-kappa B activation by ultraviolet light not dependent on a nuclear signal (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-09-10
    Description: Exposure of mammalian cells to radiation triggers the ultraviolet (UV) response, which includes activation of activator protein-1 (AP-1) and nuclear factor kappa B (NF-kappa B). This was postulated to occur by induction of a nuclear signaling cascade by damaged DNA. Recently, induction of AP-1 by UV was shown to be mediated by a pathway involving Src tyrosine kinases and the Ha-Ras small guanosine triphosphate-binding protein, proteins located at the plasma membrane. It is demonstrated here that the same pathway mediates induction of NF-kappa B by UV. Because inactive NF-kappa B is stored in the cytosol, analysis of its activation directly tests the involvement of a nuclear-initiated signaling cascade. Enucleated cells are fully responsive to UV both in NF-kappa B induction and in activation of another key signaling event. Therefore, the UV response does not require a signal generated in the nucleus and is likely to be initiated at or near the plasma membrane.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Devary, Y -- Rosette, C -- DiDonato, J A -- Karin, M -- CA50528/CA/NCI NIH HHS/ -- ES04151/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1993 Sep 10;261(5127):1442-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, School of Medicine, University of California at San Diego, La Jolla 92093.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8367725" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Catechols/pharmacology ; Cell Nucleus/*physiology ; Cytosol/metabolism ; Genes, ras ; Genes, src ; HeLa Cells ; Humans ; NF-kappa B/*metabolism/radiation effects ; Nitriles/pharmacology ; PC12 Cells ; Phosphatidylcholines/metabolism ; Protein-Tyrosine Kinases/metabolism ; Proto-Oncogene Proteins/genetics ; Proto-Oncogene Proteins c-jun/metabolism ; Proto-Oncogene Proteins c-raf ; Reactive Oxygen Species/metabolism ; Signal Transduction ; Tetradecanoylphorbol Acetate/pharmacology ; Transfection ; Tumor Necrosis Factor-alpha/pharmacology ; *Tyrphostins ; *Ultraviolet Rays
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    Hantavirus outbreak yields to PCR (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-11-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 1993 Nov 5;262(5135):832, 834-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8235602" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bunyaviridae Infections/epidemiology/*microbiology/therapy/transmission ; Disease Outbreaks ; Disease Reservoirs ; Disease Vectors ; Female ; Genome, Viral ; Hantavirus/*genetics/isolation & purification/pathogenicity ; Humans ; Lung Diseases/epidemiology/*microbiology/therapy ; Male ; Peromyscus/microbiology ; *Polymerase Chain Reaction ; Rodent Control ; Southwestern United States/epidemiology ; United States/epidemiology
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    Mammalian locomotor-respiratory integration: implications for diaphragmatic and pulmonary design (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-10-08
    Description: Diaphragmatic function and intrapulmonary respiratory flow in running mammals were found to differ substantially from the corresponding conditions known in resting mammals. In trotting dogs, orbital oscillations of the diaphragm were driven by inertial displacements of the viscera induced by locomotion. In turn, oscillations of the visceral mass drove pulmonary ventilation independent of diaphragmatic contractions, which primarily served to modulate visceral kinetics. Visceral displacements and loading of the anterior chest wall by the forelimbs are among the factors that contribute to an asynchronous ventilation of the lungs and interlobar gas recycling. Basic features of mammalian respiratory design, including the structure of the diaphragm and lobation of the lungs, appear to reflect the mechanical requirements of locomotor-respiratory integration.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bramble, D M -- Jenkins, F A Jr -- S07 RR07092/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1993 Oct 8;262(5131):235-40.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of Utah, Salt Lake City 84112.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8211141" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cineradiography ; Diaphragm/anatomy & histology/*physiology ; Dogs ; Female ; Locomotion/*physiology ; Lung/anatomy & histology/*physiology/radiography ; Male ; Models, Biological ; Muscle Contraction ; Radiography, Thoracic ; Respiratory Mechanics/*physiology
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    Effects of oral administration of type II collagen on rheumatoid arthritis (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-09-24
    Description: Rheumatoid arthritis is an inflammatory synovial disease thought to involve T cells reacting to an antigen within the joint. Type II collagen is the major protein in articular cartilage and is a potential autoantigen in this disease. Oral tolerization to autoantigens suppresses animal models of T cell-mediated autoimmune disease, including two models of rheumatoid arthritis. In this randomized, double-blind trial involving 60 patients with severe, active rheumatoid arthritis, a decrease in the number of swollen joints and tender joints occurred in subjects fed chicken type II collagen for 3 months but not in those that received a placebo. Four patients in the collagen group had complete remission of the disease. No side effects were evident. These data demonstrate clinical efficacy of an oral tolerization approach for rheumatoid arthritis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Trentham, D E -- Dynesius-Trentham, R A -- Orav, E J -- Combitchi, D -- Lorenzo, C -- Sewell, K L -- Hafler, D A -- Weiner, H L -- AG00294/AG/NIA NIH HHS/ -- MO1 RR01032/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1993 Sep 24;261(5129):1727-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Beth Israel Hospital, Boston, MA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8378772" target="_blank"〉PubMed〈/a〉
    Keywords: Administration, Oral ; Adult ; Aged ; Arthritis, Rheumatoid/*drug therapy/immunology ; Autoimmune Diseases/*drug therapy/immunology ; Collagen/*administration & dosage/adverse effects/therapeutic use ; Double-Blind Method ; Female ; Humans ; Immune Tolerance ; Male ; Middle Aged ; Placebo Effect ; T-Lymphocytes/immunology
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    Development of mature CD8+ thymocytes: selection rather than instruction? (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-08-13
    Description: The role of major histocompatibility complex (MHC) molecules in T cell differentiation was investigated by comparison of thymocyte subpopulations in wild-type mice and beta 2-microglobulin (beta 2M) mutant mice deficient in MHC class I expression and mature CD8+ cells. On the basis of surface markers, glucocorticoid resistance, in vitro differentiation capacity, and absence in beta 2 M-l- mice, CD4intermediateCD8hi cells with high expression of alpha beta T cell receptor (TCR alpha beta) were identified as having been positively selected by MHC class I for development into mature CD8+ T cells. Activated CD4intCD8hi cells bearing intermediate rather than high amounts of TCR were present in both wild-type and beta 2M-l- animals. These data suggest that recognition of MHC class I molecules is required for full maturation to CD8+ T cells, but not for receptor-initiated commitment to the CD8+ lineage, consistent with a stochastic (selection) model of thymocyte development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉van Meerwijk, J P -- Germain, R N -- New York, N.Y. -- Science. 1993 Aug 13;261(5123):911-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lymphocyte Biology Section, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8102208" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD4/analysis ; Antigens, CD8/*analysis ; CD4-Positive T-Lymphocytes/cytology/immunology ; Cell Differentiation ; Dexamethasone/pharmacology ; Histocompatibility Antigens Class I/*physiology ; Male ; Mice ; Mice, Inbred C57BL ; Phenotype ; Receptors, Antigen, T-Cell, alpha-beta/*analysis ; T-Lymphocyte Subsets/cytology/drug effects/*immunology
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    Beta-adrenergic receptor kinase-2 and beta-arrestin-2 as mediators of odorant-induced desensitization (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-02-05
    Description: beta-Adrenergic receptor kinase (beta ARK) and beta-arrestin function in the homologous or agonist-activated desensitization of G protein-coupled receptors. The isoforms beta ARK-2 and beta-arrestin-2 are highly enriched in and localized to the dendritic knobs and cilia of the olfactory receptor neurons where the initial events of olfactory signal transduction occur. Odorants induce a rapid and transient elevation of adenosine 3',5'-monophosphate (cAMP), which activates a nonspecific cation channel and produces membrane depolarization. Preincubation of rat olfactory cilia with antibodies raised against beta ARK-2 and beta-arrestin-2 increased the odorant-induced elevation of cAMP and attenuated desensitization. These results suggest that beta ARK-2 and beta-arrestin-2 mediate agonist-dependent desensitization in olfaction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dawson, T M -- Arriza, J L -- Jaworsky, D E -- Borisy, F F -- Attramadal, H -- Lefkowitz, R J -- Ronnett, G V -- NS 01578-01/NS/NINDS NIH HHS/ -- NS-02131/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1993 Feb 5;259(5096):825-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, Johns Hopkins Medical Institutions, Baltimore, MD 21205.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8381559" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens/*metabolism ; *Arrestins ; Cells, Cultured ; Cyclic AMP/metabolism ; *Cyclic AMP-Dependent Protein Kinases ; Cytosol/metabolism ; Dendrites/physiology ; Eye Proteins/*metabolism ; G-Protein-Coupled Receptor Kinase 2 ; GTP-Binding Proteins/*metabolism ; Isoenzymes/metabolism ; Male ; Mechanoreceptors/*physiology ; Neurons/*physiology ; *Odors ; Olfactory Bulb/*physiology ; Protein Kinases/*metabolism ; Rats ; Rats, Sprague-Dawley ; Receptors, Adrenergic, beta/*physiology ; Signal Transduction ; *Smell ; Testis/physiology ; Turbinates/*physiology ; beta-Adrenergic Receptor Kinases
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    Arrestin function in inactivation of G protein-coupled receptor rhodopsin in vivo (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-06-25
    Description: Arrestins have been implicated in the regulation of many G protein-coupled receptor signaling cascades. Mutations in two Drosophila photoreceptor-specific arrestin genes, arrestin 1 and arrestin 2, were generated. Analysis of the light response in these mutants shows that the Arr1 and Arr2 proteins are mediators of rhodopsin inactivation and are essential for the termination of the phototransduction cascade in vivo. The saturation of arrestin function by an excess of activated rhodopsin is responsible for a continuously activated state of the photoreceptors known as the prolonged depolarized afterpotential. In the absence of arrestins, photoreceptors undergo light-dependent retinal degeneration as a result of the continued activity of the phototransduction cascade. These results demonstrate the fundamental requirement for members of the arrestin protein family in the regulation of G protein-coupled receptors and signaling cascades in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dolph, P J -- Ranganathan, R -- Colley, N J -- Hardy, R W -- Socolich, M -- Zuker, C S -- R01 EY008768/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1993 Jun 25;260(5116):1910-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, La Jolla, CA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8316831" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Animals, Genetically Modified ; *Arrestins ; Drosophila ; Drosophila Proteins ; Eye Proteins/genetics/*physiology ; Female ; GTP-Binding Proteins/*metabolism ; Genes, Insect ; Kinetics ; Male ; Molecular Sequence Data ; Mutation ; Phosphoproteins/genetics/*physiology ; Photic Stimulation ; Photoreceptor Cells/cytology/*physiology ; Rhodopsin/analogs & derivatives/*metabolism
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    Genetic mapping of a locus predisposing to human colorectal cancer (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-05-07
    Description: Genetic linkage analysis was used to determine whether a specific chromosomal locus could be implicated in families with a history of early onset cancer but with no other unique features. Close linkage of disease to anonymous microsatellite markers on chromosome 2 was demonstrated in two large kindreds. The pairwise lod scores for linkage to marker D2S123 in these kindreds were 6.39 and 1.45 at zero recombination, and multipoint linkage with flanking markers resulted in lod scores of 6.47 and 6.01. These results prove the existence of a genetically determined predisposition to colorectal cancer that has important ramifications for understanding and preventing this disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peltomaki, P -- Aaltonen, L A -- Sistonen, P -- Pylkkanen, L -- Mecklin, J P -- Jarvinen, H -- Green, J S -- Jass, J R -- Weber, J L -- Leach, F S -- CA 35494/CA/NCI NIH HHS/ -- CA 47527/CA/NCI NIH HHS/ -- HG 00248/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 1993 May 7;260(5109):810-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Genetics, University of Helsinki, Finland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8484120" target="_blank"〉PubMed〈/a〉
    Keywords: *Chromosome Mapping ; *Chromosomes, Human, Pair 2 ; Colonic Neoplasms/*genetics ; Colorectal Neoplasms/*genetics ; DNA, Satellite/genetics ; Disease Susceptibility ; Female ; *Genes ; Genetic Markers ; Humans ; Male ; Pedigree ; Rectal Neoplasms/genetics
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    Identification of a whitefly species by genomic and behavioral studies (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-01-01
    Description: An introduced whitefly species, responsible for over a half billion dollars in damage to U.S. agricultural production in 1991, is morphologically indistinguishable from Bemisia tabaci (Gennadius). However, with the use of polymerase chain reaction-based DNA differentiation tests, allozymic frequency analyses, crossing experiments, and mating behavior studies, the introduced whitefly is found to be a distinct species. Recognition of this new species, the silverleaf whitefly, is critical in the search for management options.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Perring, T M -- Cooper, A D -- Rodriguez, R J -- Farrar, C A -- Bellows, T S Jr -- New York, N.Y. -- Science. 1993 Jan 1;259(5091):74-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Entomology, University of California, Riverside 92521.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8418497" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Base Sequence ; Crosses, Genetic ; DNA/genetics ; Diptera/*classification/genetics/*physiology ; Enzymes/genetics ; Female ; Genetic Linkage ; Male ; Molecular Sequence Data ; Oligodeoxyribonucleotides ; Polymerase Chain Reaction ; Polymorphism, Genetic ; Sexual Behavior, Animal ; United States
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    Relation of phenotype evolution of HIV-1 to envelope V2 configuration (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-06-04
    Description: Biological variability of human immunodeficiency virus type-1 (HIV-1) is involved in the pathogenesis of acquired immunodeficiency syndrome (AIDS). Syncytium-inducing (SI) HIV-1 variants emerge in 50 percent of infected individuals during infection, preceding accelerated CD4+ T cell loss and rapid progression to AIDS. The V1 to V2 and V3 region of the viral envelope glycoprotein gp120 contained the major determinants of SI capacity. The configuration of a hypervariable locus in the V2 domain appeared to be predictive for non-SI to SI phenotype conversion. Early prediction of HIV-1 phenotype evolution may be useful for clinical monitoring and treatment of asymptomatic infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Groenink, M -- Fouchier, R A -- Broersen, S -- Baker, C H -- Koot, M -- van't Wout, A B -- Huisman, H G -- Miedema, F -- Tersmette, M -- Schuitemaker, H -- New York, N.Y. -- Science. 1993 Jun 4;260(5113):1513-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Clinical Viro-Immunology, Central Laboratory of the Netherlands Red Cross Blood Transfusion Service, Amsterdam.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8502996" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/microbiology ; Amino Acid Sequence ; Base Sequence ; Biological Evolution ; Consensus Sequence ; Genetic Variation ; Giant Cells/microbiology ; HIV Envelope Protein gp120/*chemistry ; HIV Seropositivity/microbiology ; HIV-1/*chemistry/*genetics/pathogenicity ; Humans ; Male ; Molecular Sequence Data ; Phenotype ; Protein Conformation ; Recombination, Genetic
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    Determination of type I receptor specificity by the type II receptors for TGF-beta or activin (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-11-05
    Description: Transforming growth factor-beta (TGF-beta) and activin signal primarily through interaction with type I and type II receptors, which are transmembrane serine-threonine kinases. Tsk 7L is a type I receptor for TGF-beta and requires coexpression of the type II TGF-beta receptor for ligand binding. Tsk 7L also specifically bound activin, when coexpressed with the type IIA activin receptor. Tsk 7L could associate with either type II receptor and the ligand binding specificity of Tsk 7L was conferred by the type II receptor. Tsk 7L can therefore act as type I receptor for both activin and TGF-beta, and possibly other ligands.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ebner, R -- Chen, R H -- Lawler, S -- Zioncheck, T -- Derynck, R -- New York, N.Y. -- Science. 1993 Nov 5;262(5135):900-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Growth and Development, and Anatomy, University of California at San Francisco 94143-0640.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8235612" target="_blank"〉PubMed〈/a〉
    Keywords: Activin Receptors ; Activins ; Base Sequence ; DNA Primers ; Growth Substances/metabolism ; Humans ; Inhibins/*metabolism ; Molecular Sequence Data ; Precipitin Tests ; Protein-Serine-Threonine Kinases/*metabolism ; Receptors, Growth Factor/*metabolism ; Receptors, Transforming Growth Factor beta/*metabolism ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; Transfection ; Transforming Growth Factor beta/*metabolism
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    Reconstitution of T cell receptor zeta-mediated calcium mobilization in nonlymphoid cells (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-08-13
    Description: T cell antigen receptor (TCR) activation involves interactions between receptor subunits and nonreceptor protein tyrosine kinases (PTKs). Early steps in signaling through the zeta chain of the TCR were examined in transfected COS-1 cells. Coexpression of the PTK p59fynT, but not p56lck, with zeta or with a homodimeric TCR beta-zeta fusion protein produced tyrosine phosphorylation of both zeta and phospholipase C (PLC)-gamma 1, as well as calcium ion mobilization in response to receptor cross-linking. CD45 coexpression enhanced these effects. No requirement for the PTKZAP-70 was observed. Thus, p59fynT may link zeta directly to the PLC-gamma 1 activation pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hall, C G -- Sancho, J -- Terhorst, C -- AI 15066/AI/NIAID NIH HHS/ -- CA 01486/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 Aug 13;261(5123):915-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Immunology, Beth Israel Hospital, Harvard Medical School, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8346442" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD45/analysis ; Base Sequence ; Calcium/*metabolism ; Cell Line ; Cercopithecus aethiops ; Lymphocyte Specific Protein Tyrosine Kinase p56(lck) ; Membrane Proteins/*metabolism ; Molecular Sequence Data ; Phosphorylation ; Protein-Tyrosine Kinases/*metabolism/physiology ; Proto-Oncogene Proteins/*metabolism ; Proto-Oncogene Proteins c-fyn ; Receptors, Antigen, T-Cell/*metabolism ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; Transfection ; Type C Phospholipases/metabolism ; Tyrosine/metabolism ; ZAP-70 Protein-Tyrosine Kinase
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    Congress may hang up on AIDS hotline (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-04-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1993 Apr 30;260(5108):611.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8480171" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*prevention & control ; Counseling/*legislation & jurisprudence ; Financing, Government ; *Homosexuality ; Hotlines/*legislation & jurisprudence ; Humans ; Male ; National Institute of Mental Health (U.S.) ; United States
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    Ice man's fungi: discussion rekindled (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-12-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Poder, R -- New York, N.Y. -- Science. 1993 Dec 24;262(5142):1956.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8086009" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Freezing ; History, Ancient ; Hominidae/*microbiology ; Humans ; Male ; *Mummies ; Polyporaceae/*isolation & purification
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    New Sellafield study poses a puzzle (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-10-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kingman, S -- New York, N.Y. -- Science. 1993 Oct 29;262(5134):648-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8235581" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Child ; Cluster Analysis ; England/epidemiology ; Fathers ; Humans ; Leukemia, Radiation-Induced/epidemiology ; Male ; Neoplasms, Radiation-Induced/*epidemiology ; *Nuclear Reactors ; *Occupational Exposure
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    Controlling signal transduction with synthetic ligands (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-11-12
    Description: Dimerization and oligomerization are general biological control mechanisms contributing to the activation of cell membrane receptors, transcription factors, vesicle fusion proteins, and other classes of intra- and extracellular proteins. Cell permeable, synthetic ligands were devised that can be used to control the intracellular oligomerization of specific proteins. To demonstrate their utility, these ligands were used to induce intracellular oligomerization of cell surface receptors that lacked their transmembrane and extracellular regions but contained intracellular signaling domains. Addition of these ligands to cells in culture resulted in signal transmission and specific target gene activation. Monomeric forms of the ligands blocked the pathway. This method of ligand-regulated activation and termination of signaling pathways has the potential to be applied wherever precise control of a signal transduction pathway is desired.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spencer, D M -- Wandless, T J -- Schreiber, S L -- Crabtree, G R -- New York, N.Y. -- Science. 1993 Nov 12;262(5136):1019-24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Stanford University, CA 94305.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7694365" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Carrier Proteins/*metabolism ; Cross-Linking Reagents ; Gene Expression Regulation ; Heat-Shock Proteins/*metabolism ; Ligands ; Membrane Proteins/*metabolism ; Models, Biological ; Molecular Sequence Data ; Polymers ; Receptors, Antigen, T-Cell/*metabolism ; Recombinant Fusion Proteins/metabolism ; *Signal Transduction ; T-Lymphocytes/*metabolism ; Tacrolimus/*analogs & derivatives/chemical synthesis/chemistry/metabolism ; Tacrolimus Binding Proteins ; Transcriptional Activation ; Transfection ; Tumor Cells, Cultured
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    Prevention of collagen-induced arthritis with an antibody to gp39, the ligand for CD40 (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-09-03
    Description: The ligand for the CD40 antigen is a 39-kilodalton protein, gp39, expressed on the surface of activated CD4+ T cells and is essential for thymus-dependent humoral immunity. The role of gp39-CD40 interactions in autoimmune disease was investigated in vivo with the use of an antibody that blocks their interactions (anti-gp39). Arthritis induced in mice by immunization with type II collagen was inhibited by anti-gp39. Anti-gp39 blocked the development of joint inflammation, serum antibody titers to collagen, the infiltration of inflammatory cells into the subsynovial tissue, and the erosion of cartilage and bone. Thus, interference with gp39-CD40 interactions may have therapeutic potential in the treatment of autoimmune disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Durie, F H -- Fava, R A -- Foy, T M -- Aruffo, A -- Ledbetter, J A -- Noelle, R J -- AI26296/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1993 Sep 3;261(5126):1328-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, Dartmouth Medical School, Lebanon, NH 03756.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7689748" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal/*immunology ; Antigens, CD/*immunology ; Antigens, CD40 ; Antigens, Differentiation, B-Lymphocyte/*immunology ; Antigens, Differentiation, T-Lymphocyte/*immunology ; Arthritis, Experimental/immunology/pathology/prevention & control ; Arthritis, Rheumatoid/immunology/pathology/*prevention & control ; Autoimmune Diseases/immunology/pathology/*prevention & control ; CD40 Ligand ; Collagen/immunology ; Disease Models, Animal ; Immunization ; Immunoglobulin G/blood ; Joints/pathology ; Ligands ; Male ; Membrane Glycoproteins/*immunology ; Mice ; Mice, Inbred DBA
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    Effect of PU.1 phosphorylation on interaction with NF-EM5 and transcriptional activation (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-03-12
    Description: PU.1 recruits the binding of a second B cell-restricted nuclear factor, NF-EM5, to a DNA site in the immunoglobulin kappa 3' enhancer. DNA binding by NF-EM5 requires a protein-protein interaction with PU.1 and specific DNA contacts. Dephosphorylated PU.1 bound to DNA but did not interact with NF-EM5. Analysis of serine-to-alanine mutations in PU.1 indicated that serine 148 (Ser148) is required for protein-protein interaction. PU.1 produced in bacteria did not interact with NF-EM5. Phosphorylation of bacterially produced PU.1 by purified casein kinase II modified it to a form that interacted with NF-EM5 and that recruited NF-EM5 to bind to DNA. Phosphopeptide analysis of bacterially produced PU.1 suggested that Ser148 is phosphorylated by casein kinase II. This site is also phosphorylated in vivo. Expression of wild-type PU.1 increased expression of a reporter construct containing the PU.1 and NF-EM5 binding sites nearly sixfold, whereas the Ser148 mutant form only weakly activated transcription. These results demonstrate that phosphorylation of PU.1 at Ser148 is necessary for interaction with NF-EM5 and suggest that this phosphorylation can regulate transcriptional activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pongubala, J M -- Van Beveren, C -- Nagulapalli, S -- Klemsz, M J -- McKercher, S R -- Maki, R A -- Atchison, M L -- AI 30656/AI/NIAID NIH HHS/ -- CA 42909/CA/NCI NIH HHS/ -- GM 42415/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1993 Mar 12;259(5101):1622-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Animal Biology, University of Pennsylvania, School of Veterinary Medicine, Philadelphia 19104.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8456286" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/immunology ; Base Sequence ; Cell Line ; Cell Nucleus/metabolism ; DNA-Binding Proteins/genetics/isolation & purification/*metabolism ; Enhancer Elements, Genetic ; Immunoglobulin kappa-Chains/genetics ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Oligonucleotide Probes ; Phosphorylation ; Plasmacytoma ; Recombinant Proteins/isolation & purification/metabolism ; Retroviridae Proteins, Oncogenic ; Transcription Factors/*metabolism ; *Transcription, Genetic ; Transfection ; Tumor Cells, Cultured
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    Induction of type I diabetes by interferon-alpha in transgenic mice (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-06-25
    Description: Type I diabetes is an autoimmune disease involving an interaction between an epigenetic event (possibly a viral infection), the pancreatic beta cells, and the immune system in a genetically susceptible host. The possibility that the type I interferons could mediate this interaction was tested with transgenic mice in which the insulin-producing beta cells expressed an interferon-alpha. These mice developed a hypoinsulinemic diabetes associated with a mixed inflammation centered on the islets. The inflammation and the diabetes were prevented with a neutralizing antibody to the interferon-alpha. Thus, the expression of interferon-alpha by the beta cells could be causal in the development of type I diabetes, which suggests a therapeutic approach to this disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stewart, T A -- Hultgren, B -- Huang, X -- Pitts-Meek, S -- Hully, J -- MacLachlan, N J -- New York, N.Y. -- Science. 1993 Jun 25;260(5116):1942-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Endocrine Research, Genentech, Inc., South San Francisco, CA 94080.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8100367" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal/therapeutic use ; CD4-CD8 Ratio ; CD4-Positive T-Lymphocytes ; Diabetes Mellitus, Type 1/*etiology/immunology/pathology ; Female ; Glucagon/analysis ; Insulin/analysis/blood ; Interferon-alpha/*biosynthesis/immunology ; Islets of Langerhans/immunology/*metabolism/pathology ; Leukocytes, Mononuclear ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Neutralization Tests ; Somatostatin/analysis
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    The learning of categories: parallel brain systems for item memory and category knowledge (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-12-10
    Description: A fundamental question about cognition concerns how knowledge about a category is acquired through encounters with examples of the category. Amnesic patients and control subjects performed similarly at classifying novel patterns according to whether they belonged to the same category as a set of training patterns. In contrast, the amnesic patients were impaired at recognizing which dot patterns had been presented for training. Category learning appears to be independent of declarative (explicit) memory for training instances and independent of the brain structures essential for declarative memory that are damaged in amnesia. Knowledge about categories can be acquired implicitly by cumulating information from multiple examples.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Knowlton, B J -- Squire, L R -- MH24600/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1993 Dec 10;262(5140):1747-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Veterans Affairs Medical Center, San Diego, CA 92161.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8259522" target="_blank"〉PubMed〈/a〉
    Keywords: Aged ; Amnesia/*psychology ; Female ; Humans ; *Learning ; Male ; *Memory ; Middle Aged
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    Thymic selection of cytotoxic T cells independent of CD8 alpha-Lck association (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-09-17
    Description: The CD8 alpha cytoplasmic domain associates with p56lck, a nonreceptor protein-tyrosine kinase. The biological relevance of CD8 alpha-Lck association in T cell development was tested with transgenic mice generated to express a CD8 alpha molecule with two amino acid substitutions in its cytoplasmic domain, which abolishes the association of CD8 alpha with Lck. The CD8 alpha mutant was analyzed in a CD8-/- background and in the context of the transgenic 2C T cell receptor. The development and function of CD8+ T cells in these mice were apparently normal. Thus, CD8 alpha-Lck association is not necessary for positive selection, negative selection, or CD8-dependent cytotoxic function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chan, I T -- Limmer, A -- Louie, M C -- Bullock, E D -- Fung-Leung, W P -- Mak, T W -- Loh, D Y -- AI 155322-13/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1993 Sep 17;261(5128):1581-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Medicine, Genetics, and Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8372352" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD4/metabolism ; Antigens, CD8/immunology/*metabolism ; *Cytotoxicity, Immunologic ; Female ; Genes, MHC Class I ; Lymphocyte Culture Test, Mixed ; Lymphocyte Specific Protein Tyrosine Kinase p56(lck) ; Male ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C3H ; Mice, Inbred C57BL ; Mice, Transgenic ; Mutation ; Phosphorylation ; Protein-Tyrosine Kinases/*metabolism ; Receptors, Antigen, T-Cell ; T-Lymphocytes, Cytotoxic/*immunology
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    Colocalization of X-linked agammaglobulinemia and X-linked immunodeficiency genes (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-07-16
    Description: Mice that bear the X-linked immunodeficiency (xid) mutation have a B lymphocyte-specific defect resulting in an inability to make antibody responses to polysaccharide antigens. A backcross of 1114 progeny revealed the colocalization of xid with Bruton's agammaglobulinemia tyrosine kinase (btk) gene, which is implicated in the human immune deficiency, X-linked agammaglobulinemia. Mice that carry xid have a missense mutation that alters a highly conserved arginine near the amino-terminus of the btk protein, Btk. Because this region of Btk lies outside any obvious kinase domain, the xid mutation may define another aspect of tyrosine kinase function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thomas, J D -- Sideras, P -- Smith, C I -- Vorechovsky, I -- Chapman, V -- Paul, W E -- GM33160/GM/NIGMS NIH HHS/ -- HG00277/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 1993 Jul 16;261(5119):355-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8332900" target="_blank"〉PubMed〈/a〉
    Keywords: Agammaglobulinemia/enzymology/*genetics/immunology ; Amino Acid Sequence ; Animals ; B-Lymphocytes/enzymology/immunology ; Base Sequence ; Chromosome Mapping ; Crosses, Genetic ; Female ; *Genes ; Genetic Linkage ; Immunologic Deficiency Syndromes/enzymology/*genetics/immunology ; Male ; Mice ; Mice, Inbred CBA ; Mice, Mutant Strains ; Molecular Sequence Data ; Muridae ; Mutation ; Protein-Tyrosine Kinases/chemistry/*genetics/metabolism ; *X Chromosome
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    A truncated erythropoietin receptor and cell death (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-01-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schwall, R -- New York, N.Y. -- Science. 1993 Jan 29;259(5095):696.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8430322" target="_blank"〉PubMed〈/a〉
    Keywords: Bone Marrow/*physiology ; Cell Death/drug effects/*physiology ; Cell Division/drug effects ; Cell Survival/drug effects ; Erythropoietin/*pharmacology ; Humans ; Receptors, Erythropoietin/*genetics/*physiology ; Transfection
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    The conserved pre-mRNA splicing factor U2AF from Drosophila: requirement for viability (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-10-22
    Description: The large subunit of the human pre-messenger RNA splicing factor U2 small nuclear ribonucleoprotein auxiliary factor (hU2AF65) is required for spliceosome assembly in vitro. A complementary DNA clone encoding the large subunit of Drosophila U2AF (dU2AF50) has been isolated. The dU2AF50 protein is closely related to its mammalian counterpart and contains three carboxyl-terminal ribonucleoprotein consensus sequence RNA binding domains and an amino-terminal arginine- and serine-rich (R/S) domain. Recombinant dU2AF50 protein complements mammalian splicing extracts depleted of U2AF activity. Germline transformation of Drosophila with the dU2AF50 complementary DNA rescues a lethal mutation, establishing that the dU2AF50 gene is essential for viability. R/S domains have been found in numerous metazoan splicing factors, but their function is unknown. The mutation in Drosophila U2AF will allow in vivo analysis of a conserved R/S domain-containing general splicing factor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kanaar, R -- Roche, S E -- Beall, E L -- Green, M R -- Rio, D C -- R01-HD28063/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1993 Oct 22;262(5133):569-73.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology, University of California, Berkeley 94720.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7692602" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Conserved Sequence ; DNA, Complementary ; Drosophila melanogaster/*genetics/growth & development ; Female ; Gene Transfer Techniques ; Genes, Insect ; Genes, Lethal ; In Situ Hybridization ; Male ; Molecular Sequence Data ; Mutation ; *Nuclear Proteins ; RNA/metabolism ; RNA Precursors/*metabolism ; *RNA Splicing ; Recombinant Proteins/metabolism ; Ribonucleoproteins/chemistry/*genetics/metabolism ; Sequence Alignment
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  • 84
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    Retinal degeneration in choroideremia: deficiency of rab geranylgeranyl transferase (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-01-15
    Description: Rab geranylgeranyl transferase (GG transferase) is a two-component enzyme that attaches 20-carbon isoprenoid groups to cysteine residues in Rab proteins, a family of guanosine triphosphate-binding proteins that regulate vesicular traffic. The mutant gene in human choroideremia, an X-linked form of retinal degeneration, encodes a protein that resembles component A of rat Rab GG transferase. Lymphoblasts from choroideremia subjects showed a marked deficiency in the activity of component A, but not component B, of Rab GG transferase. The deficiency was more pronounced when the substrate was Rab3A, a synaptic vesicle protein, than it was when the substrate was Rab1A, a protein of the endoplasmic reticulum. The data imply the existence of multiple component A proteins, one of which is missing in choroideremia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Seabra, M C -- Brown, M S -- Goldstein, J L -- HL 20948/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1993 Jan 15;259(5093):377-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas 75235.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8380507" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; *Alkyl and Aryl Transferases ; Cell Line, Transformed ; Cells, Cultured ; Choroid/chemistry ; Choroideremia/*genetics ; Female ; GTP-Binding Proteins/analysis/*metabolism ; Gene Expression Regulation, Enzymologic ; Humans ; Lymphocyte Activation ; Male ; Middle Aged ; Mutation ; Nerve Tissue Proteins/analysis/*metabolism ; Photoreceptor Cells/chemistry ; Pigment Epithelium of Eye/chemistry ; Protein Prenylation ; Retina/chemistry ; Substrate Specificity ; Transferases/*deficiency/genetics ; rab1 GTP-Binding Proteins ; rab3 GTP-Binding Proteins
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  • 85
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    Connexin mutations in X-linked Charcot-Marie-Tooth disease (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-12-24
    Description: X-linked Charcot-Marie-Tooth disease (CMTX) is a form of hereditary neuropathy with demyelination. Recently, this disorder was mapped to chromosome Xq13.1. The gene for the gap junction protein connexin32 is located in the same chromosomal segment, which led to its consideration as a candidate gene for CMTX. With the use of Northern (RNA) blot and immunohistochemistry technique, it was found that connexin32 is normally expressed in myelinated peripheral nerve. Direct sequencing of the connexin32 gene showed seven different mutations in affected persons from eight CMTX families. These findings, a demonstration of inherited defects in a gap junction protein, suggest that connexin32 plays an important role in peripheral nerve.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bergoffen, J -- Scherer, S S -- Wang, S -- Scott, M O -- Bone, L J -- Paul, D L -- Chen, K -- Lensch, M W -- Chance, P F -- Fischbeck, K H -- GM37751/GM/NIGMS NIH HHS/ -- NS01565/NS/NINDS NIH HHS/ -- NS08075/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1993 Dec 24;262(5142):2039-42.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, University of Pennsylvania Medical School, Children's Hospital of Philadelphia 19104.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8266101" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Charcot-Marie-Tooth Disease/*genetics ; Chromosome Mapping ; Connexins/analysis/*genetics ; Female ; Genetic Linkage ; Humans ; Male ; Molecular Sequence Data ; *Mutation ; Nerve Fibers, Myelinated/chemistry ; Nerve Tissue Proteins/analysis ; Peripheral Nerves/chemistry ; Rats ; X Chromosome
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  • 86
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    Rhythmic exocytosis stimulated by GnRH-induced calcium oscillations in rat gonadotropes (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-04-02
    Description: In pituitary gonadotropes, gonadotropin-releasing hormone (GnRH) induces the rhythmic release of Ca2+ from an inositol 1,4,5-trisphosphate (IP3)-sensitive store. Simultaneous measurement of the concentration of cytosolic free Ca2+ ([Ca2+]i) and exocytosis in single identified gonadotropes showed that each elevation of [Ca2+]i induced a burst of exocytosis. These phenomena were largely suppressed by buffering of [Ca2+]i but persisted in the absence of extracellular Ca2+. Activation of voltage-gated Ca2+ channels by brief depolarizations seldom supplied enough Ca2+ for exocytosis, but [Ca2+]i elevations induced by photolysis of caged IP3 did trigger exocytosis, confirming that GnRH-stimulated gonadotropic hormone secretion is closely coupled to intracellular Ca2+ release. Agonist-induced oscillations of [Ca2+]i in secretory cells may be a mechanism to optimize the secretory output while avoiding the toxic effects of sustained elevation of [Ca2+]i.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tse, A -- Tse, F W -- Almers, W -- Hille, B -- New York, N.Y. -- Science. 1993 Apr 2;260(5104):82-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology and Biophysics, University of Washington School of Medicine, Seattle 98195.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8385366" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Calcium/*metabolism ; Calcium Channels/drug effects/physiology ; Cytoplasmic Granules/drug effects/physiology ; Electrophysiology ; Exocytosis/*drug effects ; Gonadotropin-Releasing Hormone/administration & dosage/*pharmacology ; Inositol 1,4,5-Trisphosphate/pharmacology ; Male ; Periodicity ; Photolysis ; Pituitary Gland/drug effects/*physiology/ultrastructure ; Rats ; Rats, Sprague-Dawley
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  • 87
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    Altered growth of human colon cancer cell lines disrupted at activated Ki-ras (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-04-02
    Description: Point mutations that activate the Ki-ras proto-oncogene are presented in about 50 percent of human colorectal tumors. To study the functional significance of these mutations, the activated Ki-ras genes in two human colon carcinoma cell lines, DLD-1 and HCT 116, were disrupted by homologous recombination. Compared with parental cells, cells disrupted at the activated Ki-ras gene were morphologically altered, lost the capacity for anchorage-independent growth, grew more slowly both in vitro and in nude mice, and showed reduced expression of c-myc. Thus, the activated Ki-ras gene plays a key role in colorectal tumorigenesis through altered cell differentiation and cell growth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shirasawa, S -- Furuse, M -- Yokoyama, N -- Sasazuki, T -- New York, N.Y. -- Science. 1993 Apr 2;260(5104):85-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Kyushu University, Fukuoka, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8465203" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Differentiation ; Cell Division ; Codon ; Colonic Neoplasms/*genetics/pathology ; Gene Expression Regulation, Neoplastic ; Genes, myc/genetics ; Genes, ras/*genetics ; Humans ; Infant ; Mice ; Mice, Nude ; Molecular Sequence Data ; Mutagenesis, Insertional ; Nucleic Acid Hybridization ; Plasmids ; *Point Mutation ; Polymerase Chain Reaction ; Restriction Mapping ; Transfection ; Tumor Cells, Cultured
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  • 88
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    Reduction in size of the myotonic dystrophy trinucleotide repeat mutation during transmission (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-02-05
    Description: Myotonic dystrophy (DM) is an autosomal-dominant disorder that affects 1 in 8000 individuals. Amplification of an unstable trinucleotide CTG repeat, located within the 3' untranslated region of a gene, correlates with a more severe DM phenotype. In three cases, the number of CTG repeats was reduced during the transmission of the DM allele; in one of these cases, the number was reduced to within the normal range and correlated at least with a delay in the onset of clinical signs of DM. Haplotype data of six polymorphic markers in the DM gene region indicate that, in this latter case, two stretches of the affected chromosome had been exchanged with that region of the wild-type chromosome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Hoy, K L -- Tsilfidis, C -- Mahadevan, M S -- Neville, C E -- Barcelo, J -- Hunter, A G -- Korneluk, R G -- New York, N.Y. -- Science. 1993 Feb 5;259(5096):809-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, University of Ottawa, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8094260" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Age Factors ; Alleles ; Apolipoprotein C-II ; Apolipoproteins C/genetics ; Base Sequence ; *Chromosomes, Human, Pair 19 ; DNA/genetics/isolation & purification ; Female ; Genes, Dominant ; Haplotypes ; Humans ; Male ; Molecular Sequence Data ; *Mutation ; Myotonic Dystrophy/*genetics/physiopathology ; Oligodeoxyribonucleotides ; Pedigree ; Polymerase Chain Reaction ; *Polymorphism, Restriction Fragment Length ; *Repetitive Sequences, Nucleic Acid
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  • 89
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    A single phosphotyrosine residue of Stat91 required for gene activation by interferon-gamma (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-09-24
    Description: Interferon-gamma (IFN-gamma) stimulates transcription of specific genes by inducing tyrosine phosphorylation of a 91-kilodalton cytoplasmic protein (termed STAT for signal transducer and activator of transcription). Stat91 was phosphorylated on a single site (Tyr701), and phosphorylation of this site was required for nuclear translocation, DNA binding, and gene activation. Stat84, a differentially spliced product of the same gene that lacks the 38 carboxyl-terminal amino acids of Stat91, did not activate transcription, although it was phosphorylated and translocated to the nucleus and bound DNA. Thus, Stat91 mediates activation of transcription in response to IFN-gamma.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shuai, K -- Stark, G R -- Kerr, I M -- Darnell, J E Jr -- AI32489-02/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1993 Sep 24;261(5129):1744-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Rockefeller University, Laboratory of Molecular Cell Biology, New York, NY 10021.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7690989" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cell Line ; Cell Nucleus/metabolism ; DNA-Binding Proteins/chemistry/*metabolism ; *Gene Expression Regulation ; Humans ; Interferon-gamma/*pharmacology ; Molecular Sequence Data ; Peptide Fragments/chemistry/metabolism ; Phosphotyrosine ; *Signal Transduction ; Transcription Factors/chemistry/*metabolism ; Transcriptional Activation ; Transfection ; Tyrosine/analogs & derivatives/chemistry
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  • 90
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    CD40 ligand gene defects responsible for X-linked hyper-IgM syndrome (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-02-12
    Description: The ligand for CD40 (CD40L) is a membrane glycoprotein on activated T cells that induces B cell proliferation and immunoglobulin secretion. Abnormalities in the CD40L gene were associated with an X-linked immunodeficiency in humans [hyper-IgM (immunoglobulin M) syndrome]. This disease is characterized by elevated concentrations of serum IgM and decreased amounts of all other isotypes. CD40L complementary DNAs from three of four patients with this syndrome contained distinct point mutations. Recombinant expression of two of the mutant CD40L complementary DNAs resulted in proteins incapable of binding to CD40 and unable to induce proliferation or IgE secretion from normal B cells. Activated T cells from the four affected patients failed to express wild-type CD40L, although their B cells responded normally to wild-type CD40L. Thus, these CD40L defects lead to a T cell abnormality that results in the failure of patient B cells to undergo immunoglobulin class switching.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Allen, R C -- Armitage, R J -- Conley, M E -- Rosenblatt, H -- Jenkins, N A -- Copeland, N G -- Bedell, M A -- Edelhoff, S -- Disteche, C M -- Simoneaux, D K -- A125129/PHS HHS/ -- N01-CO-74101/CO/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 Feb 12;259(5097):990-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Baylor College of Medicine, Houston, TX 77030.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7679801" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/*metabolism ; Antigens, CD40 ; Antigens, Differentiation, B-Lymphocyte/*metabolism ; Base Sequence ; CD40 Ligand ; DNA/chemistry/genetics ; Humans ; Immunoglobulin M/*blood ; Immunologic Deficiency Syndromes/*genetics/immunology ; Ligands ; Male ; Membrane Glycoproteins/*genetics ; Mice ; Molecular Sequence Data ; *Point Mutation ; Polymerase Chain Reaction ; T-Lymphocytes/*immunology ; Transfection ; *X Chromosome
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  • 91
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    Genetics and male sexual orientation (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-09-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Diamond, R -- New York, N.Y. -- Science. 1993 Sep 3;261(5126):1258-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8362240" target="_blank"〉PubMed〈/a〉
    Keywords: Civil Rights ; Ethics, Medical ; *Genes ; Genetic Testing ; *Homosexuality ; Humans ; Male
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  • 92
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    The skipping of constitutive exons in vivo induced by nonsense mutations (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-01-29
    Description: Nonsense mutations create a premature signal for the termination of translation of messenger RNA. Such mutations have been observed to cause a severe reduction in the amount of mutant allele transcript or to generate a peptide truncated at the carboxyl end. Analysis of fibrillin transcript from a patient with Marfan syndrome revealed the skipping of a constitutive exon containing a nonsense mutation. Similar results were observed for two nonsense mutations in the gene encoding ornithine delta-aminotransferase from patients with gyrate atrophy. All genomic DNA sequences flanking these exons that are known to influence RNA splicing were unaltered, which suggests that nonsense mutations can alter splice site selection in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dietz, H C -- Valle, D -- Francomano, C A -- Kendzior, R J Jr -- Pyeritz, R E -- Cutting, G R -- AR-41135/AR/NIAMS NIH HHS/ -- HG-00373/HG/NHGRI NIH HHS/ -- RR-00722/RR/NCRR NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1993 Jan 29;259(5095):680-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD 21205.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8430317" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Cells, Cultured ; DNA/*genetics/isolation & purification ; *Exons ; Female ; Fibroblasts/physiology ; Humans ; Male ; Marfan Syndrome/*genetics ; Microfilament Proteins/*genetics ; Molecular Sequence Data ; *Mutation ; Oligodeoxyribonucleotides ; Polymerase Chain Reaction/methods ; Reference Values
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  • 93
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    Sixth AIDS case traced to Florida dentist (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-05-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1993 May 14;260(5110):897.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8493522" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*transmission ; *Dentists ; Female ; Florida ; Humans ; Male ; *Patients
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  • 94
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    Transsynaptic expression of a presynaptic glutamate receptor during hippocampal long-term potentiation (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-10-15
    Description: Repetitive activation of excitatory synapses in the hippocampus produces a persistent enhancement of synaptic efficiency known as long-term potentiation (LTP). In anesthetized and in freely moving rats, the induction of LTP in the perforant path led to a transient increase in the amount of messenger RNA (mRNA) coding for a presynaptic glutamate receptor (GR33) in dentate granule cells. The amount of GR33 mRNA was increased for at least 5 hours after the induction of LTP but was indistinguishable from control values 1 day after induction. The N-methyl-D-aspartate receptor antagonist 2-aminophosphonovalerate prevented the induction of both LTP and the increase in GR33 mRNA. The amount of GR33 protein was increased in the mossy fiber terminal zone of dentate granule cells 5 hours after the induction of LTP. These results suggest that the induction of LTP in synapses at one stage in a neural network may lead to modification in synaptic function at the next stage in the network.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smirnova, T -- Laroche, S -- Errington, M L -- Hicks, A A -- Bliss, T V -- Mallet, J -- New York, N.Y. -- Science. 1993 Oct 15;262(5132):433-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire de genetique moleculaire de la neurotransmission et des processus neurodegeneratifs, Centre National de la Recherche Scientifique (CNRS), Gif-sur-Yvette, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8105538" target="_blank"〉PubMed〈/a〉
    Keywords: 2-Amino-5-phosphonovalerate/pharmacology ; Animals ; Electric Stimulation ; Evoked Potentials ; Gene Expression ; Hippocampus/*metabolism/physiology ; In Situ Hybridization ; Male ; RNA, Messenger/genetics/metabolism ; Rats ; Rats, Sprague-Dawley ; Receptors, Glutamate/biosynthesis/*genetics ; Receptors, Presynaptic/biosynthesis/*genetics ; Synapses/*metabolism
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  • 95
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    Translocation of TCR alpha chains into the lumen of the endoplasmic reticulum and their degradation (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-03-26
    Description: After synthesis, the alpha chain of the T cell antigen receptor (TCR alpha) can form a complex with other TCR chains and move to the cell surface, or TCR alpha can undergo degradation in the endoplasmic reticulum (ER) if it remains unassembled. The mechanism of translocation and degradation in the ER is unclear. It was found that the putative transmembrane region of TCR alpha (alpha tm) was incompetent on its own to act as a transmembrane region. Molecules that contained alpha tm were translocated into the ER lumen and then underwent either rapid degradation or secretion, depending on the sequence of the cytoplasmic domain. A specific signal for ER degradation within alpha tm does not appear to be present.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shin, J -- Lee, S -- Strominger, J L -- AI20182/AI/NIAID NIH HHS/ -- CA47554/CA/NCI NIH HHS/ -- GM48961/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1993 Mar 26;259(5103):1901-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Tumor Virology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8456316" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, CD4/chemistry/genetics/metabolism ; Cytoplasm/metabolism ; DNA/genetics ; Endoplasmic Reticulum/*metabolism ; Glycosylation ; HeLa Cells/metabolism ; Humans ; Immunosorbent Techniques ; Lipid Bilayers/metabolism ; Macromolecular Substances ; Mice ; Molecular Sequence Data ; Mutagenesis ; Protein Structure, Secondary ; Receptors, Antigen, T-Cell/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/chemistry/metabolism ; Transfection
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  • 96
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    Release of active cytokinin by a beta-glucosidase localized to the maize root meristem (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-11-12
    Description: A beta-glucoside encoded by a cloned Zea mays complementary DNA (Zm-p60.1) cleaved the biologically inactive hormone conjugates cytokinin-O-glucosides and kinetin-N3-glucoside, releasing active cytokinin. Tobacco protoplasts that transiently expressed Zm-p60.1 could use the inactive cytokinin glucosides to initiate cell division. The ability of protoplasts to sustain growth in response to cytokinin glucosides persisted indefinitely after the likely disappearance of the expression vector. In the roots of maize seedlings, Zm-p60.1 was localized to the meristematic cells and may function in vivo to supply the developing maize embryo with active cytokinin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brzobohaty, B -- Moore, I -- Kristoffersen, P -- Bako, L -- Campos, N -- Schell, J -- Palme, K -- New York, N.Y. -- Science. 1993 Nov 12;262(5136):1051-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max-Planck Institut fur Zuchtungsforschung, Koln Federal Republic of Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8235622" target="_blank"〉PubMed〈/a〉
    Keywords: Adenine/analogs & derivatives/metabolism ; Amino Acid Sequence ; Base Sequence ; Cell Division ; Cytokinins/*metabolism ; DNA, Complementary/genetics ; Glucosides/metabolism ; Kinetin ; Molecular Sequence Data ; Plants, Toxic ; Protoplasts/cytology/enzymology ; Tobacco/cytology/enzymology ; Transfection ; Zea mays/enzymology/growth & development/*metabolism ; Zeatin/*metabolism ; beta-Glucosidase/genetics/*metabolism
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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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    Abnormal behavior associated with a point mutation in the structural gene for monoamine oxidase A (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-10-22
    Description: Genetic and metabolic studies have been done on a large kindred in which several males are affected by a syndrome of borderline mental retardation and abnormal behavior. The types of behavior that occurred include impulsive aggression, arson, attempted rape, and exhibitionism. Analysis of 24-hour urine samples indicated markedly disturbed monoamine metabolism. This syndrome was associated with a complete and selective deficiency of enzymatic activity of monoamine oxidase A (MAOA). In each of five affected males, a point mutation was identified in the eighth exon of the MAOA structural gene, which changes a glutamine to a termination codon. Thus, isolated complete MAOA deficiency in this family is associated with a recognizable behavioral phenotype that includes disturbed regulation of impulsive aggression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brunner, H G -- Nelen, M -- Breakefield, X O -- Ropers, H H -- van Oost, B A -- NS 21921/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1993 Oct 22;262(5133):578-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Human Genetics, University Hospital Nijmegen, The Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8211186" target="_blank"〉PubMed〈/a〉
    Keywords: *Aggression ; Cell Line ; Cells, Cultured ; Female ; *Genes ; Humans ; Intellectual Disability/enzymology/*genetics ; Male ; Monoamine Oxidase/deficiency/*genetics ; Pedigree ; Phenotype ; *Point Mutation ; Skin/enzymology ; Syndrome ; X Chromosome
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 98
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    Gene replacement in Toxoplasma gondii with chloramphenicol acetyltransferase as selectable marker (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-11-05
    Description: A system for stable transformation of Toxoplasma gondii tachyzoites was developed that exploited the susceptibility of Toxoplasma to chloramphenicol. Introduction of the chloramphenicol acetyltransferase (CAT) gene fused to Toxoplasma flanking sequences followed by chloramphenicol selection resulted in parasites stably expressing CAT. A construct incorporating the tandemly repeated gene, B1, targeted efficiently to its homologous chromosomal locus. Knockout of the single-copy gene, ROP1, was also successful. Stable transformation should permit the identification and analysis of Toxoplasma genes important in the interaction of this opportunistic parasite with its host.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, K -- Soldati, D -- Boothroyd, J C -- New York, N.Y. -- Science. 1993 Nov 5;262(5135):911-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, Stanford University School of Medicine 94305.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8235614" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chloramphenicol/pharmacology ; Chloramphenicol O-Acetyltransferase/*genetics ; Drug Resistance ; *Genes, Protozoan ; Genetic Markers ; Multigene Family ; Plasmids ; Recombination, Genetic ; Toxoplasma/drug effects/*genetics ; Transfection ; *Transformation, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 99
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    Social structure of pilot whales revealed by analytical DNA profiling (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-04-30
    Description: Long-finned pilot whales swim in large, extremely cohesive social groups known as pods. Molecular typing revealed that pod members form a single extended family. Mature males neither disperse from nor mate within their natal pods, a situation unusual for mammals. Such behavior could be explained in terms of inclusive fitness benefits gained by adult males helping the large number of female relatives with which they swim.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Amos, B -- Schlotterer, C -- Tautz, D -- New York, N.Y. -- Science. 1993 Apr 30;260(5108):670-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Cambridge University, United Kingdom.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8480176" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Base Sequence ; DNA, Satellite/*genetics ; Female ; Genotype ; Male ; Molecular Sequence Data ; Oligodeoxyribonucleotides/genetics ; Repetitive Sequences, Nucleic Acid ; Sexual Behavior, Animal ; *Social Behavior ; Whales/genetics/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 100
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    Modulation of cocaine self-administration in the rat through D-3 dopamine receptors (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-06-18
    Description: The reinforcing properties of cocaine are probably mediated by the mesocorticolimbic dopamine pathways in the central nervous system, but not all of the dopamine receptor subtypes involved in cocaine's reinforcing actions have been clearly identified. Recently, the D-3 receptor has been cloned, and its distribution in the brain has been found to be relatively restricted to limbic projections of the midbrain dopamine system. The D-3-selective compounds 7-hydroxy-N,N-di-n-propyl-2-aminotetralin (7-OHDPAT) and quinpirole potently decreased cocaine self-administration in the rat at doses that were not by themselves reinforcing. Moreover, three dopamine receptor agonists had affinities for binding to the D-3 receptor that correlated highly with their relative potencies in decreasing cocaine self-administration. The D-3 receptor may be involved in the reinforcing effects of cocaine and may be a useful target for the development of new pharmacotherapies for cocaine abuse.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Caine, S B -- Koob, G F -- NIDA DA04398/DA/NIDA NIH HHS/ -- NIDA DA05478/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1993 Jun 18;260(5115):1814-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuropharmacology, Scripps Research Institute, La Jolla, CA 92037.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8099761" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apomorphine/pharmacology ; Cocaine/*administration & dosage ; Dopamine Agents/*pharmacology ; Dose-Response Relationship, Drug ; Ergolines/pharmacology ; Male ; Quinpirole ; Rats ; Rats, Wistar ; Receptors, Dopamine/*metabolism ; *Receptors, Dopamine D2 ; Receptors, Dopamine D3 ; Reinforcement (Psychology) ; Self Administration ; Tetrahydronaphthalenes/pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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