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  • Articles  (104)
  • Latest Papers from Table of Contents or Articles in Press  (104)
  • Male  (104)
  • 1990-1994  (104)
  • 1935-1939
  • 1993  (104)
  • Natural Sciences in General  (104)
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  • Articles  (104)
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  • Latest Papers from Table of Contents or Articles in Press  (104)
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  • 1990-1994  (104)
  • 1935-1939
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  • 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
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  • 5
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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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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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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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  • 7
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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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  • 8
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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
    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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    Altered fluid transport across airway epithelium in cystic fibrosis (1993)
    American Association for the Advancement of Science (AAAS)
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    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
    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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    Cloning the differences between two complex genomes (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    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 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
    Print ISSN: 0036-8075
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  • 12
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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
    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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  • 13
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    Reversal of left-right asymmetry: a situs inversus mutation (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 14
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    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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  • 15
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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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  • 16
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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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    Genetic models for studying cancer susceptibility (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    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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  • 18
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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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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 19
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    Clues to the pathogenesis of familial colorectal cancer (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    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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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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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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  • 21
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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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  • 22
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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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  • 23
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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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    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)
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    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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  • 26
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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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  • 27
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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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  • 28
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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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  • 29
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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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    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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    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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    Where are 'new' diseases born? (1993)
    American Association for the Advancement of Science (AAAS)
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    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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    AIDS theories (1993)
    American Association for the Advancement of Science (AAAS)
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    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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    Cytoskeletal role in the contractile dysfunction of hypertrophied myocardium (1993)
    American Association for the Advancement of Science (AAAS)
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    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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    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)
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    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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    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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    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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    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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    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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    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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    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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    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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    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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    CD40 ligand gene defects responsible for X-linked hyper-IgM syndrome (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    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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    Genetics and male sexual orientation (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    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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    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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    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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    Transsynaptic expression of a presynaptic glutamate receptor during hippocampal long-term potentiation (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    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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    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
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    Social structure of pilot whales revealed by analytical DNA profiling (1993)
    American Association for the Advancement of Science (AAAS)
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    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
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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)
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    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
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    Functional magnetic resonance imaging of motor cortex: hemispheric asymmetry and handedness (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-07-30
    Description: A hemispheric asymmetry in the functional activation of the human motor cortex during contralateral (C) and ipsilateral (I) finger movements, especially in right-handed subjects, was documented with nuclear magnetic resonance imaging at high field strength (4 tesla). Whereas the right motor cortex was activated mostly during contralateral finger movements in both right-handed (C/I mean area of activation = 36.8) and left-handed (C/I = 29.9) subjects, the left motor cortex was activated substantially during ipsilateral movements in left-handed subjects (C/I = 5.4) and even more so in right-handed subjects (C/I = 1.3).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, S G -- Ashe, J -- Hendrich, K -- Ellermann, J M -- Merkle, H -- Ugurbil, K -- Georgopoulos, A P -- HL32427/HL/NHLBI NIH HHS/ -- HL33600/HL/NHLBI NIH HHS/ -- RR08079/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1993 Jul 30;261(5121):615-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Magnetic Resonance Research (CMRR), University of Minnesota Medical School, Minneapolis 55455.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8342027" target="_blank"〉PubMed〈/a〉
    Keywords: *Brain Mapping ; Female ; *Functional Laterality ; Humans ; *Magnetic Resonance Imaging ; Male ; Motor Cortex/anatomy & histology/*physiology
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    A linkage between DNA markers on the X chromosome and male sexual orientation (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-07-16
    Description: The role of genetics in male sexual orientation was investigated by pedigree and linkage analyses on 114 families of homosexual men. Increased rates of same-sex orientation were found in the maternal uncles and male cousins of these subjects, but not in their fathers or paternal relatives, suggesting the possibility of sex-linked transmission in a portion of the population. DNA linkage analysis of a selected group of 40 families in which there were two gay brothers and no indication of nonmaternal transmission revealed a correlation between homosexual orientation and the inheritance of polymorphic markers on the X chromosome in approximately 64 percent of the sib-pairs tested. The linkage to markers on Xq28, the subtelomeric region of the long arm of the sex chromosome, had a multipoint lod score of 4.0 (P = 10(-5), indicating a statistical confidence level of more than 99 percent that at least one subtype of male sexual orientation is genetically influenced.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hamer, D H -- Hu, S -- Magnuson, V L -- Hu, N -- Pattatucci, A M -- New York, N.Y. -- Science. 1993 Jul 16;261(5119):321-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Biochemistry, National Cancer 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/8332896" target="_blank"〉PubMed〈/a〉
    Keywords: Female ; *Genes ; *Genetic Linkage ; Genetic Markers ; Genotype ; *Homosexuality ; Humans ; Male ; Pedigree ; Phenotype ; *X Chromosome
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    Modulation of anxiety and neuropeptide Y-Y1 receptors by antisense oligodeoxynucleotides (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-01-22
    Description: The function of neuropeptide Y, one of the most abundant peptide transmitters of the mammalian brain, remains unclear because of a lack of specific receptor antagonists. An antisense oligodeoxynucleotide corresponding to the NH2-terminus of the rat Y1 receptor was constructed and added to cultures of rat cortical neurons. This treatment resulted in a reduced density of Y1 (but not Y2) receptors and diminished the decrease in adenosine 3',5'-monophosphate (cAMP) usually seen after Y1 receptor activation. Repeated injection of the same oligodeoxynucleotide into the lateral cerebral ventricle of rats was followed by a similar reduction of cortical Y1 (but not Y2) receptors. Such antisense-treated animals displayed behavioral signs of anxiety. Thus, specific inhibition of neurotransmitter receptor expression can be accomplished in the living brain and demonstrates that altered central neuropeptide Y transmission produces an anxiety-like state.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wahlestedt, C -- Pich, E M -- Koob, G F -- Yee, F -- Heilig, M -- New York, N.Y. -- Science. 1993 Jan 22;259(5094):528-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology and Neuroscience, Cornell University Medical College, New York, NY 10021.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8380941" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Anxiety ; Base Sequence ; Cells, Cultured ; Cerebral Cortex/*physiology ; Cyclic AMP/metabolism ; Down-Regulation ; Embryo, Mammalian ; Learning ; Male ; Molecular Sequence Data ; Neurons/drug effects/*physiology ; Neuropeptide Y/*physiology ; Oligodeoxyribonucleotides ; Oligonucleotides, Antisense/*pharmacology ; Polymerase Chain Reaction ; Rats ; Rats, Wistar ; Receptors, Neuropeptide Y/*drug effects/*genetics/metabolism
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    New colon cancer gene discovered (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-05-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J -- New York, N.Y. -- Science. 1993 May 7;260(5109):751-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8484115" target="_blank"〉PubMed〈/a〉
    Keywords: *Chromosomes, Human, Pair 2 ; Colonic Neoplasms/*genetics ; Colorectal Neoplasms/*genetics ; DNA, Satellite/*genetics ; Disease Susceptibility ; Female ; *Genes ; Genetic Markers ; Humans ; Male ; Mutation
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    Divergence in proteins, mitochondrial DNA, and reproductive compatibility across the isthmus of Panama (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-06-11
    Description: It is widely believed that gene flow connected many shallow water populations of the Caribbean and eastern Pacific until the Panama seaway closed 3.0 to 3.5 million years ago. Measurements of biochemical and reproductive divergence for seven closely related, transisthmian pairs of snapping shrimps (Alpheus) indicate, however, that isolation was staggered rather than simultaneous. The four least divergent pairs provide the best estimate for rates of molecular divergence and speciation. Ecological, genetic, and geological data suggest that gene flow was disrupted for the remaining three pairs by environmental change several million years before the land barrier was complete.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Knowlton, N -- Weigt, L A -- Solorzano, L A -- Mills, D K -- Bermingham, E -- New York, N.Y. -- Science. 1993 Jun 11;260(5114):1629-32.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Smithsonian Tropical Research Institute, Balboa, Republic of Panama.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8503007" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Base Sequence ; DNA, Mitochondrial/*genetics ; Decapoda (Crustacea)/enzymology/*genetics ; Female ; Genotype ; Geological Phenomena ; Geology ; Isoenzymes/*genetics ; Male ; Molecular Sequence Data ; Panama ; *Phylogeny
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Atherosclerosis in transgenic mice overexpressing apolipoprotein A-II (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-07-23
    Description: Concentrations of plasma high density lipoprotein (HDL) are inversely correlated with atherosclerotic coronary artery disease. The two most abundant protein constituents of HDL are apolipoproteins A-I and A-II (apoA-I and apoA-II). ApoA-I is required for assembly of HDL and, when overexpressed in transgenic mice, confers resistance to early atherosclerosis. The present studies reveal that transgenic mice that overexpress mouse apoA-II had elevated HDL-cholesterol concentrations but, nevertheless, exhibited increased atherosclerotic lesion development as compared to normal mice. The HDL in the transgenic mice was larger and had an increased ratio of apoA-II to apoA-I. Thus, both the composition and amount of HDL appear to be important determinants of atherosclerosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Warden, C H -- Hedrick, C C -- Qiao, J H -- Castellani, L W -- Lusis, A J -- HL-07386/HL/NHLBI NIH HHS/ -- HL-28481/HL/NHLBI NIH HHS/ -- HL-42488/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1993 Jul 23;261(5120):469-72.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of California, Los Angeles 90024.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8332912" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apolipoprotein A-I/physiology ; Apolipoprotein A-II/genetics/*physiology ; Arteriosclerosis/*blood/genetics ; Cholesterol/blood ; Crosses, Genetic ; Female ; Lipoproteins, HDL/blood/chemistry ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Inbred DBA ; Mice, Transgenic
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Women at NIH. Task force: level the playing field (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-05-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watson, T -- New York, N.Y. -- Science. 1993 May 14;260(5110):888-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8493518" target="_blank"〉PubMed〈/a〉
    Keywords: Career Mobility ; Female ; Humans ; Male ; *National Institutes of Health (U.S.)/organization & administration ; Salaries and Fringe Benefits ; United States ; *Women, Working
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    Long search for sea urchin sperm receptor pays off (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-03-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aldhous, P -- New York, N.Y. -- Science. 1993 Mar 5;259(5100):1403-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8383877" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Female ; Male ; Ovum/physiology ; Receptors, Cell Surface/genetics/*physiology ; Sea Urchins ; *Sperm-Ovum Interactions ; Spermatozoa/physiology
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    Structural features of polysaccharides that induce intra-abdominal abscesses (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-10-15
    Description: The capsular polysaccharide complex from Bacteroides fragilis promotes the formation of intra-abdominal abscesses--a pathologic host response to infecting microorganisms. This complex consists of two distinct polysaccharides, each with repeating units that have positively charged amino groups and negatively charged carboxyl or phosphate groups. Analysis of these polysaccharides as well as other charged carbohydrates before and after chemical modification revealed that these oppositely charged groups are required for the induction of intra-abdominal abscesses in a rat model.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tzianabos, A O -- Onderdonk, A B -- Rosner, B -- Cisneros, R L -- Kasper, D L -- 1F32 AI 084901 AI/AI/NIAID NIH HHS/ -- 2T32AI07061-11AI/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1993 Oct 15;262(5132):416-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Channing Laboratory, Brigham and Women's Hospital, Boston, MA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8211161" target="_blank"〉PubMed〈/a〉
    Keywords: *Abdomen ; Abscess/*microbiology ; Animals ; Bacterial Capsules/*chemistry/toxicity ; Bacteroides Infections/*microbiology ; Bacteroides fragilis/*pathogenicity ; Carbohydrate Sequence ; Male ; Molecular Sequence Data ; Neisseria meningitidis/pathogenicity ; Polysaccharides, Bacterial/chemistry/toxicity ; Rats ; Rats, Wistar ; Salmonella typhi/pathogenicity ; Streptococcus pneumoniae/pathogenicity ; Structure-Activity Relationship
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    Cyclin-dependent regulation of G1 in mammalian fibroblasts (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-03-26
    Description: Eukaryotic cells become committed to proliferate during the G1 phase of the cell cycle. In budding yeast, commitment occurs when the catalytic subunit of a protein kinase, encoded by the CDC28 gene (the homolog of the fission yeast cdc2+ gene), binds to a positively acting regulatory subunit, a cyclin. Related kinases are also required for progression through the G1 phase in higher eukaryotes. The role of cyclins in controlling G1 progression in mammalian cells was tested by construction of fibroblasts that constitutively overexpress human cyclin E. This was found to shorten the duration of G1, decrease cell size, and diminish the serum requirement for the transition from G1 to S phase. These observations show that cyclin levels can be rate-limiting for G1 progression in mammalian cells and suggest that cyclin synthesis may be the target of physiological signals that control cell proliferation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ohtsubo, M -- Roberts, J M -- New York, N.Y. -- Science. 1993 Mar 26;259(5103):1908-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98104.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8384376" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Division/physiology ; Cell Line ; Cloning, Molecular ; Cyclins/genetics/*physiology ; Fibroblasts/*cytology/metabolism ; Flow Cytometry ; G1 Phase/*physiology ; Gene Expression ; Genetic Vectors ; Humans ; Kanamycin Kinase ; Male ; Phosphotransferases/genetics ; Rats ; Recombinant Fusion Proteins/metabolism ; Retroviridae/genetics ; S Phase/physiology ; Time Factors ; Transfection
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    A nonpeptidyl growth hormone secretagogue (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-06-11
    Description: A nonpeptidyl secretagogue for growth hormone of the structure 3-amino-3-methyl-N-(2,3,4,5-tetrahydro-2-oxo-1-([2'-(1H-tetrazol-5 -yl) (1,1'-biphenyl)-4-yl]methyl)-1H-1-benzazepin-3(R)-yl)-butanamid e (L-692,429) has been identified. L-692,429 synergizes with the natural growth hormone secretagogue growth hormone-releasing hormone and acts through an alternative signal transduction pathway. The mechanism of action of L-692,429 and studies with peptidyl and nonpeptidyl antagonists suggest that this molecule is a mimic of the growth hormone-releasing hexapeptide His-D-Trp-Ala-Trp-D-Phe-Lys-NH2 (GHRP-6). L-692,429 is an example of a nonpeptidyl specific secretagogue for growth hormone.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, R G -- Cheng, K -- Schoen, W R -- Pong, S S -- Hickey, G -- Jacks, T -- Butler, B -- Chan, W W -- Chaung, L Y -- Judith, F -- New York, N.Y. -- Science. 1993 Jun 11;260(5114):1640-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Basic Animal Science Research, Merck Research Laboratories, Rahway, NJ 07065.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8503009" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Benzazepines/*pharmacology ; Cells, Cultured ; Dogs ; Growth Hormone/*drug effects/secretion ; Male ; Membrane Potentials/drug effects ; Molecular Sequence Data ; Oligopeptides/chemistry/pharmacology ; Pituitary Gland, Anterior/drug effects/secretion ; Rats ; Second Messenger Systems/drug effects ; Stereoisomerism ; Structure-Activity Relationship ; Tetrazoles/*pharmacology
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    A magic bullet against AIDS? (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-10-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pinkerton, S D -- Abramson, P R -- New York, N.Y. -- Science. 1993 Oct 8;262(5131):162-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8211134" target="_blank"〉PubMed〈/a〉
    Keywords: *AIDS Vaccines ; Acquired Immunodeficiency Syndrome/*prevention & control ; *Condoms ; Female ; Humans ; Male ; Vaccination
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Mathematics achievement of Chinese, Japanese, and American children: ten years later (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-01-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stevenson, H W -- Chen, C -- Lee, S Y -- New York, N.Y. -- Science. 1993 Jan 1;259(5091):53-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of Michigan, Ann Arbor, MI 48109.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8418494" target="_blank"〉PubMed〈/a〉
    Keywords: Achievement ; Adolescent ; Adult ; Attitude ; Child ; China ; Cross-Cultural Comparison ; Education/*standards ; *Educational Measurement ; Female ; Follow-Up Studies ; Humans ; Japan ; Male ; *Mathematics ; Parents/psychology ; United States
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    Evidence for homosexuality gene (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-07-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1993 Jul 16;261(5119):291-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8332894" target="_blank"〉PubMed〈/a〉
    Keywords: *Genes ; Genetic Linkage ; Genetic Markers ; *Homosexuality ; Humans ; Male ; Pedigree ; *X Chromosome
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    Linkage on chromosome 3 of autoimmune diabetes and defective Fc receptor for IgG in NOD mice (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-04-30
    Description: A congenic, non-obese diabetic (NOD) mouse strain that contains a segment of chromosome 3 from the diabetes-resistant mouse strain B6.PL-Thy-1a was less susceptible to diabetes than NOD mice. A fully penetrant immunological defect also mapped to this segment, which encodes the high-affinity Fc receptor for immunoglobulin G (IgG), Fc gamma RI. The NOD Fcgr1 allele, which results in a deletion of the cytoplasmic tail, caused a 73 percent reduction in the turnover of cell surface receptor-antibody complexes. The development of congenic strains and the characterization of Mendelian traits that are specific to the disease phenotype demonstrate the feasibility of dissecting the pathophysiology of complex, non-Mendelian diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Prins, J B -- Todd, J A -- Rodrigues, N R -- Ghosh, S -- Hogarth, P M -- Wicker, L S -- Gaffney, E -- Podolin, P L -- Fischer, P A -- Sirotina, A -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1993 Apr 30;260(5108):695-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Nuffield Department of Surgery, University of Oxford, John Radcliffe Hospital, Headington, United Kingdom.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8480181" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoimmune Diseases/*genetics ; Base Sequence ; Crosses, Genetic ; Diabetes Mellitus, Type 1/*genetics ; Endocytosis ; Female ; Gene Deletion ; *Genetic Linkage ; Genetic Markers ; Immunoglobulin G/metabolism ; Male ; Mice ; Mice, Inbred NOD ; Molecular Sequence Data ; Mutation ; Phenotype ; Receptors, IgG/*genetics/metabolism
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    Right hemisphere dominance for the production of facial expression in monkeys (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-07-23
    Description: In humans, the left side of the face (right hemisphere of the brain) is dominant in emotional expression. In rhesus monkeys, the left side of the face begins to display facial expression earlier than the right side and is more expressive. Humans perceive rhesus chimeras created by pairing the left half of the face with its mirror-reversed duplicate as more expressive than chimeras created by right-right pairings. That the right hemisphere determines facial expression, and the left hemisphere processes species-typical vocal signals, suggests that human and nonhuman primates exhibit the same pattern of brain asymmetry for communication.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hauser, M D -- New York, N.Y. -- Science. 1993 Jul 23;261(5120):475-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Anthropology, Harvard University, Cambridge, MA 02138.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8332914" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Copulation/physiology ; Dominance-Subordination ; *Facial Expression ; Fear/physiology ; Functional Laterality/*physiology ; Macaca mulatta/*physiology/psychology ; Male ; Videotape Recording
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    Genetic 'master switch' for left-right symmetry found (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-04-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ewing, T -- New York, N.Y. -- Science. 1993 Apr 30;260(5108):624-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8480173" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Embryonic and Fetal Development/*genetics ; Female ; *Genes, Recessive ; Male ; Mice ; Mice, Transgenic ; Mutagenesis, Insertional ; Situs Inversus/*genetics
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    New Seveso findings point to cancer (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-09-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stone, R -- New York, N.Y. -- Science. 1993 Sep 10;261(5127):1383.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8367719" target="_blank"〉PubMed〈/a〉
    Keywords: *Accidents, Occupational ; *Carcinogens ; Dioxins/*adverse effects ; Environmental Exposure/*adverse effects ; *Explosions ; Female ; Humans ; Italy/epidemiology ; Male ; Neoplasms/chemically induced/*epidemiology ; Risk Factors
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    Sex surveys come out of the closet (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-04-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watson, T -- New York, N.Y. -- Science. 1993 Apr 30;260(5108):615-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8480172" target="_blank"〉PubMed〈/a〉
    Keywords: Female ; Financing, Government ; *Health Surveys ; Humans ; Male ; Research Support as Topic ; *Sexual Behavior ; United States
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    Genetics and male sexual orientation (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-09-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fausto-Sterling, A -- Balaban, E -- New York, N.Y. -- Science. 1993 Sep 3;261(5126):1257; author reply 1259.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8362239" target="_blank"〉PubMed〈/a〉
    Keywords: *Genes ; Genetic Linkage ; *Homosexuality ; Humans ; Male ; *X Chromosome
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    Hormonal chemoprevention of cancer in women (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-01-29
    Description: The use of oral contraceptives in the United States during the past three decades has led to a dramatic decline in the incidence of cancers of the ovary and endometrium. The magnitude of these declines was predictable both from epidemiologic data and from the biologic effects of oral contraceptives on these tissues. Although the incidence of breast cancer has not been substantially affected by current oral contraceptives, it may be possible to develop alternative forms of contraception that provide protection against all three cancers. The major goal of hormonal chemoprevention of cancer is to reduce cell proliferation in the relevant epithelial tissue. New chemopreventive agents such as tamoxifen exemplify the application of this principle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Henderson, B E -- Ross, R K -- Pike, M C -- CA-17054/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 Jan 29;259(5095):633-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Preventive Medicine, University of Southern California School of Medicine, Los Angeles 90033.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8381558" target="_blank"〉PubMed〈/a〉
    Keywords: 5-alpha Reductase Inhibitors ; Adult ; Age Factors ; Aged ; Androstenes/therapeutic use ; Anticarcinogenic Agents/*therapeutic use ; Azasteroids/therapeutic use ; Breast Neoplasms/epidemiology/*prevention & control ; Contraceptives, Oral/*therapeutic use ; Endometrial Neoplasms/epidemiology/mortality/*prevention & control ; Estrogen Replacement Therapy ; Female ; Finasteride ; Great Britain/epidemiology ; Humans ; Incidence ; Male ; Middle Aged ; Ovarian Neoplasms/epidemiology/mortality/*prevention & control ; Progestins/*therapeutic use ; Prostatic Neoplasms/prevention & control ; Tamoxifen/*therapeutic use ; United States/epidemiology
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  • 89
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    Separable regulatory elements governing myogenin transcription in mouse embryogenesis (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-07-09
    Description: Expression of the myogenic helix-loop-helix (HLH) protein myogenin in muscle cell precursors within somites and limb buds is among the earliest events associated with myogenic lineage determination in vertebrates. Mutations in the myogenin promoter that abolish binding sites for myogenic HLH proteins or myocyte enhancer factor-2 (MEF-2) suppressed transcription of a linked lacZ transgene in subsets of myogenic precursors in mouse embryos. These results suggest that myogenic HLH proteins and MEF-2 participate in separable regulatory circuits leading to myogenin transcription and provide evidence for positional regulation of myogenic regulators in the embryo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cheng, T C -- Wallace, M C -- Merlie, J P -- Olson, E N -- New York, N.Y. -- Science. 1993 Jul 9;261(5118):215-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, University of Texas M.D. Anderson Cancer Center, Houston 77030.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8392225" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding Sites ; DNA-Binding Proteins/genetics/metabolism ; Embryo, Mammalian/*metabolism ; Extremities/embryology ; Female ; MEF2 Transcription Factors ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Inbred CBA ; Mice, Transgenic ; Muscle Proteins/*genetics ; Muscles/*embryology/metabolism ; Mutation ; Myogenic Regulatory Factors ; Myogenin ; Promoter Regions, Genetic ; Trans-Activators/*genetics ; Transcription Factors/genetics/metabolism ; *Transcription, Genetic
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    Double-blind pilot trial of oral tolerization with myelin antigens in multiple sclerosis (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-02-26
    Description: Multiple sclerosis (MS) is thought to be an autoimmune disease mediated by T lymphocytes that recognize myelin components of the central nervous system. In a 1-year double-blind study, 30 individuals with relapsing-remitting MS received daily capsules of bovine myelin or a control protein to determine the effect of oral tolerization to myelin antigens on the disease. Six of 15 individuals in the myelin-treated group had at least one major exacerbation; 12 or 15 had an attack in the control group. T cells reactive with myelin basic protein were reduced in the myelin-treated group. No toxicity or side effects were noted. Although conclusions about efficacy cannot be drawn from these data, they open an area of investigation for MS and other autoimmune diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weiner, H L -- Mackin, G A -- Matsui, M -- Orav, E J -- Khoury, S J -- Dawson, D M -- Hafler, D A -- NS23132/NS/NINDS NIH HHS/ -- NS24247/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1993 Feb 26;259(5099):1321-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7680493" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Antigens, Differentiation, T-Lymphocyte/analysis ; Autoantigens/*administration & dosage ; Double-Blind Method ; Female ; HLA-DR2 Antigen/genetics ; Haplotypes ; Humans ; Immune Tolerance ; Male ; Multiple Sclerosis/genetics/*therapy ; Myelin Basic Protein/immunology ; Myelin Sheath/immunology ; Pilot Projects ; T-Lymphocytes/immunology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Mutation of unique region of Bruton's tyrosine kinase in immunodeficient XID mice (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-07-16
    Description: The cytoplasmic tyrosine kinase, Bruton's tyrosine kinase (Btk, formerly bpk or atk), is crucial for B cell development. Loss of kinase activity results in the human immunodeficiency, X-linked agammaglobulinemia, characterized by a failure to produce B cells. In the murine X-linked immunodeficiency (XID), B cells are present but respond abnormally to activating signals. The Btk gene, btk, was mapped to the xid region of the mouse X chromosome by interspecific backcross analysis. A single conserved residue within the amino terminal unique region of Btk was mutated in XID mice. This change in xid probably interferes with normal B cell signaling mediated by Btk protein interactions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rawlings, D J -- Saffran, D C -- Tsukada, S -- Largaespada, D A -- Grimaldi, J C -- Cohen, L -- Mohr, R N -- Bazan, J F -- Howard, M -- Copeland, N G -- AR36834/AR/NIAMS NIH HHS/ -- N01-CO-74101/CO/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 Jul 16;261(5119):358-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Molecular Genetics, University of California, Los Angeles 90024.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8332901" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; B-Lymphocytes/*enzymology/immunology ; Base Sequence ; Cell Line ; Chromosome Mapping ; Crosses, Genetic ; Exons ; Female ; Genetic Linkage ; Immunologic Deficiency Syndromes/enzymology/*genetics/immunology ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Inbred CBA ; Mice, Inbred DBA ; Mice, Mutant Strains ; Molecular Sequence Data ; Protein-Tyrosine Kinases/chemistry/*genetics/metabolism ; *X Chromosome
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Pasteur notebooks reveal deception (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-02-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, C -- New York, N.Y. -- Science. 1993 Feb 19;259(5098):1117.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8438162" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anthrax/prevention & control ; Bacterial Vaccines/administration & dosage ; Child ; France ; History, 19th Century ; Humans ; Male ; Rabies/prevention & control ; Rabies Vaccines/administration & dosage ; Scientific Misconduct/*history ; Sheep
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    Slowing the spread of HIV: agenda for the 1990s (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-05-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Merson, M H -- New York, N.Y. -- Science. 1993 May 28;260(5112):1266-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉World Health Organization's Global Program on AIDS, Geneva, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8493570" target="_blank"〉PubMed〈/a〉
    Keywords: AIDS Vaccines ; Acquired Immunodeficiency Syndrome/epidemiology/*prevention & ; control/transmission ; Developing Countries ; Disease Outbreaks ; Female ; HIV Infections/epidemiology/prevention & control/transmission ; Humans ; Male ; Research ; Sexual Behavior ; Sexually Transmitted Diseases/prevention & control/therapy
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Aging twins offer clues to late-onset diseases (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-03-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ansley, D -- New York, N.Y. -- Science. 1993 Mar 26;259(5103):1826-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8456309" target="_blank"〉PubMed〈/a〉
    Keywords: Aged ; Aging/*physiology ; Alzheimer Disease/genetics ; Cerebrovascular Disorders/genetics ; Genetic Diseases, Inborn/*genetics ; Humans ; Male ; Neoplasms/genetics ; Parkinson Disease/genetics ; Registries ; *Twins, Monozygotic
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  • 95
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    HLA-DPB1 glutamate 69: a genetic marker of beryllium disease (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-10-08
    Description: Chronic beryllium disease (CBD) is a lung disorder related to beryllium exposure and is characterized by the accumulation in the lung of beryllium-specific CD4+ major histocompatibility complex (MHC) class II-restricted T lymphocytes. Evaluation of MHC class II genes in 33 CBD cases and 44 controls has shown a negative association with HLA-DPB1*0401 (P 〈 0.001) and a positive association with HLA-DPB1*0201 (P 〈 0.05) alleles, which differ at residues 36, 55 to 56, and 69 of the beta 1 chain. Among CBD cases, 97 percent expressed the HLA-DPB1*0201-associated glutamic acid (unaffected population, 30 percent; P 〈 0.001) at residue 69, a position involved in susceptibility to autoimmune disorders. This suggests that HLA-DP has a role in conferring susceptibility and that residue 69 of HLA-DPB1 could be used in risk assessment for CBD.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Richeldi, L -- Sorrentino, R -- Saltini, C -- New York, N.Y. -- Science. 1993 Oct 8;262(5131):242-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Postgraduate School of Cardiorespiratory Physiopathology, University of Roma, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8105536" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Alleles ; Amino Acid Sequence ; Base Sequence ; Berylliosis/*genetics/immunology ; Beryllium/*adverse effects ; Disease Susceptibility ; Female ; Genes, MHC Class II ; Genotype ; Glutamates ; Glutamic Acid ; HLA-DP Antigens/chemistry/*genetics/immunology ; Humans ; Linkage Disequilibrium ; Male ; Middle Aged ; Molecular Sequence Data ; *Occupational Exposure ; Phenotype ; Risk Factors
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    A putative ATP-activated Na+ channel involved in sperm-induced fertilization (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-07-23
    Description: Extracellular application of adenosine triphosphate (ATP) to defolliculated Xenopus laevis oocytes activated a saturating inward current with a maximal amplitude E(max) of 2.4 +/- 0.2 microamperes and an apparent Michaelis constant of 197.6 micromolar. The current was carried predominantly by sodium ions and potently inhibited by amiloride, guanosine triphosphate (GTP), and its nonhydrolyzable analogs guanosine 5'-[beta,gamma-imido]triphosphate (GppNHp) and guanosine 5'-O-(3-thiotriphosphate). Likewise, in vitro fertilization using mature eggs and Xenopus sperm was inhibited by amiloride, GTP, and GppNHp. Hence, an ATP receptor on the egg membrane may be the recipient target for ATP originating in sperm, suggesting that an ATP-induced increase in sodium permeability mediates the initial sperm to egg signal in the fertilization process.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kupitz, Y -- Atlas, D -- New York, N.Y. -- Science. 1993 Jul 23;261(5120):484-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry, Hebrew University of Jerusalem, Israel.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8392753" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/analogs & derivatives/pharmacology/*physiology ; Amiloride/pharmacology ; Animals ; Female ; Guanosine Triphosphate/analogs & derivatives/pharmacology ; In Vitro Techniques ; Male ; Membrane Potentials/physiology ; Oocytes/physiology ; Receptors, Purinergic/drug effects/physiology ; Sodium Channels/*physiology ; Sperm-Ovum Interactions/*physiology ; Xenopus laevis
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Male sexual orientation and genetic evidence (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-12-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Risch, N -- Squires-Wheeler, E -- Keats, B J -- New York, N.Y. -- Science. 1993 Dec 24;262(5142):2063-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8266107" target="_blank"〉PubMed〈/a〉
    Keywords: *Genetic Linkage ; Genetics, Behavioral ; Homosexuality ; Humans ; Male ; Models, Genetic ; Sexual Behavior/*physiology ; *X Chromosome
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    Dynamics of the hippocampal ensemble code for space (1993)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1993-08-20
    Description: Ensemble recordings of 73 to 148 rat hippocampal neurons were used to predict accurately the animals' movement through their environment, which confirms that the hippocampus transmits an ensemble code for location. In a novel space, the ensemble code was initially less robust but improved rapidly with exploration. During this period, the activity of many inhibitory cells was suppressed, which suggests that new spatial information creates conditions in the hippocampal circuitry that are conducive to the synaptic modification presumed to be involved in learning. Development of a new population code for a novel environment did not substantially alter the code for a familiar one, which suggests that the interference between the two spatial representations was very small. The parallel recording methods outlined here make possible the study of the dynamics of neuronal interactions during unique behavioral events.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, M A -- McNaughton, B L -- MH46823/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1993 Aug 20;261(5124):1055-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychology, University of Arizona, Tucson 85724.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8351520" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal ; Exploratory Behavior ; Hippocampus/*physiology ; Interneurons/physiology ; Male ; *Memory ; Neurons/*physiology ; Rats ; Rats, Inbred F344 ; *Space Perception
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 99
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    New challenges in human in vitro fertilization (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-05-14
    Description: This review assesses some scientific and ethical problems with human in vitro fertilization. Improved selection of viable embryos, better culture conditions, and greater understanding of the uterine environment will increase success and prevent multiple pregnancy. Further advances will also improve oocyte cryopreservation, in vitro maturation of oocytes, knowledge of sperm function, and sperm microinjection. Preimplantation diagnosis will help avoid genetic diseases and increase understanding of embryonic defects and the viability of zygotes. The greatest ethical problem with all these developments seems to be delivery of these complex treatments when health-care resources are increasingly limited.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Winston, R M -- Handyside, A H -- New York, N.Y. -- Science. 1993 May 14;260(5110):932-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Obstetrics and Gynaecology, Royal Postgraduate Medical School, Hammersmith Hospital, London, United Kingdom.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8493531" target="_blank"〉PubMed〈/a〉
    Keywords: Cryopreservation ; Directed Tissue Donation ; Embryo Transfer ; Embryo, Mammalian ; Female ; *Fertilization in Vitro ; Genetic Diseases, Inborn ; Health Services Accessibility ; Humans ; Male ; Oocyte Donation ; Oocytes/physiology/transplantation ; Prenatal Diagnosis ; Resource Allocation ; *Risk Assessment ; Sex Determination Analysis ; Spermatozoa/physiology ; Tissue and Organ Procurement
    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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    Cyclic ADP-ribose in insulin secretion from pancreatic beta cells (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-01-15
    Description: Inositol 1,4,5-trisphosphate (IP3) is thought to be a second messenger for intracellular calcium mobilization. However, in a cell-free system of islet microsomes, cyclic adenosine diphosphate-ribose (cADP-ribose), a nicotinamide adenine dinucleotide (NAD+) metabolite, but not IP3, induced calcium release. In digitonin-permeabilized islets, cADP-ribose and calcium, but not IP3, induced insulin secretion. Islet microsomes released calcium when combined with the extract from intact islets that had been incubated with high concentrations of glucose. Sequential additions of cADP-ribose inhibited the calcium release response to extracts from islets treated with high concentrations of glucose. Conversely, repeated additions of the islet extract inhibited the calcium release response to a subsequent addition of cADP-ribose. These results suggest that cADP-ribose is a mediator of calcium release from islet microsomes and may be generated in islets by glucose stimulation, serving as a second messenger for calcium mobilization in the endoplasmic reticulum.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Takasawa, S -- Nata, K -- Yonekura, H -- Okamoto, H -- New York, N.Y. -- Science. 1993 Jan 15;259(5093):370-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Tohoku University School of Medicine, Miyagi, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8420005" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Diphosphate Ribose/*analogs & derivatives/physiology ; Animals ; Benzamides/pharmacology ; Calcium/*metabolism ; Cerebellum/metabolism ; Cyclic ADP-Ribose ; Dose-Response Relationship, Drug ; Glucose/metabolism ; Heparin/pharmacology ; Inositol 1,4,5-Trisphosphate/physiology ; Insulin/*secretion ; Islets of Langerhans/*secretion ; Male ; Microsomes/metabolism ; Niacinamide/pharmacology ; Poly(ADP-ribose) Polymerase Inhibitors ; Rats ; Rats, Wistar ; *Second Messenger Systems ; Streptozocin/pharmacology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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