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  • Organic Chemistry  (766)
  • Humans  (292)
  • 1985-1989  (563)
  • 1955-1959  (495)
  • 1
    Publication Date: 1988-12-02
    Description: Human gamma-aminobutyric acid A (GABAA) receptor subunits were expressed transiently in cultured mammalian cells. This expression system allows the simultaneous characterization of ligand-gated ion channels by electrophysiology and by pharmacology. Thus, coexpression of the alpha and beta subunits of the GABAA receptor generated GABA-gated chloride channels and binding sites for GABAA receptor ligands. Channels consisting of only alpha or beta subunits could also be detected. These homomeric channels formed with reduced efficiencies compared to the heteromeric receptors. Both of these homomeric GABA-responsive channels were potentiated by barbiturate, indicating that sites for both ligand-gating and allosteric potentiation are present on receptors assembled from either subunit.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pritchett, D B -- Sontheimer, H -- Gorman, C M -- Kettenmann, H -- Seeburg, P H -- Schofield, P R -- New York, N.Y. -- Science. 1988 Dec 2;242(4883):1306-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Neuroendocrinology, ZMBH, University of Heidelberg, Federal Republic of Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2848320" target="_blank"〉PubMed〈/a〉
    Keywords: Allosteric Regulation ; Blotting, Northern ; Cells, Cultured ; Chloride Channels ; Chlorides/*physiology ; Cloning, Molecular ; Electric Conductivity ; Humans ; Macromolecular Substances ; Membrane Proteins/*physiology ; Muscimol/metabolism ; Receptors, GABA-A/*physiology/ultrastructure ; Structure-Activity Relationship ; Transfection
    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
    Publication Date: 1989-12-08
    Description: The fragile X syndrome is the most common cause of familial mental retardation. Genetic counseling and gene isolation are hampered by a lack of DNA markers close to the disease locus. Two somatic cell hybrids that each contain a human X chromosome with a breakpoint close to the fragile X locus have been characterized. A new DNA marker (DXS296) lies between the chromosome breakpoints and is the closest marker to the fragile X locus yet reported. The Hunter syndrome gene, which causes iduronate sulfatase deficiency, is located at the X chromosome breakpoint that is distal to this new marker, thus localizing the Hunter gene distal to the fragile X locus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Suthers, G K -- Callen, D F -- Hyland, V J -- Kozman, H M -- Baker, E -- Eyre, H -- Harper, P S -- Roberts, S H -- Hors-Cayla, M C -- Davies, K E -- New York, N.Y. -- Science. 1989 Dec 8;246(4935):1298-300.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Histopathology, Adelaide Children's Hospital, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2573953" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosome Mapping ; Female ; Fragile X Syndrome/*genetics ; Genetic Counseling ; *Genetic Linkage ; *Genetic Markers ; Genomic Library ; Humans ; Hybrid Cells ; Likelihood Functions ; Mice ; Mucopolysaccharidosis II/genetics ; Mutation ; Nucleic Acid Hybridization ; Polymorphism, Restriction Fragment Length ; Sex Chromosome Aberrations/*genetics ; Translocation, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 1988-06-03
    Description: In a study aimed at developing a vaccine against the asexual blood stages of Plasmodium falciparum, two T cell epitopes were identified within a nonpolymorphic region of gp190 of Plasmodium falciparum merozoites. The two epitopes, which were revealed by deletion analysis, stimulated human T cell clones. Peptides containing sequences of the epitopes stimulated the cloned T cells and peripheral blood mononuclear cells (PBMC) from malaria-infected individuals. Moreover, the T cell clones responded to 11 different Plasmodium falciparum isolates in culture, showing that the epitopes are recognized in native parasites.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Crisanti, A -- Muller, H M -- Hilbich, C -- Sinigaglia, F -- Matile, H -- McKay, M -- Scaife, J -- Beyreuther, K -- Bujard, H -- New York, N.Y. -- Science. 1988 Jun 3;240(4857):1324-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Zentrum fur Molekulare Biologie, Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2453924" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, Protozoan/*immunology ; Epitopes/analysis/*immunology ; Humans ; Molecular Sequence Data ; Peptide Fragments/immunology ; Plasmodium falciparum/*immunology ; T-Lymphocytes/*immunology ; T-Lymphocytes, Helper-Inducer/immunology
    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
    Publication Date: 1986-12-19
    Description: In postmortem studies of patients with schizophrenia, D2 dopamine receptors in the basal ganglia have been observed to be more numerous than in patients with no history of neurological or psychiatric disease. Because most patients with schizophrenia are treated with neuroleptic drugs that block D2 dopamine receptors in the caudate nucleus, it has been suggested that this increase in the number of receptors is a result of adaptation to these drugs rather than a biochemical abnormality intrinsic to schizophrenia. With positron emission tomography (PET), the D2 dopamine receptor density in the caudate nucleus of living human beings was measured in normal volunteers and in two groups of patients with schizophrenia--one group that had never been treated with neuroleptics and another group that had been treated with these drugs. D2 dopamine receptor densities in the caudate nucleus were higher in both groups of patients than in the normal volunteers. Thus, schizophrenia itself is associated with an increase in brain D2 dopamine receptor density.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wong, D F -- Wagner, H N Jr -- Tune, L E -- Dannals, R F -- Pearlson, G D -- Links, J M -- Tamminga, C A -- Broussolle, E P -- Ravert, H T -- Wilson, A A -- Toung, J K -- Malat, J -- Williams, J A -- O'Tuama, L A -- Snyder, S H -- Kuhar, M J -- Gjedde, A -- 1RO1 53146/PHS HHS/ -- NS15080/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1986 Dec 19;234(4783):1558-63.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2878495" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Antipsychotic Agents/*therapeutic use ; Caudate Nucleus/*metabolism ; Haloperidol/therapeutic use ; Humans ; Kinetics ; Receptors, Dopamine/*metabolism ; Receptors, Dopamine D2 ; Schizophrenia/drug therapy/*metabolism ; Spiperone/analogs & derivatives/metabolism ; Tomography, Emission-Computed
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 1985-08-23
    Description: To test the hypothesis that interfamily variability in Huntington's Disease (HD) is due to mutation at different loci, linkage analysis was undertaken in two large HD kindreds that differed in ethnicity, age-at-onset, and neurologic and psychiatric features. Both families showed linkage of the HD locus to the G8 probe. Several recombinants were documented in each family, and the best estimate of the recombination fraction for the two families was 6 percent with a 95 percent confidence interval of 0 to 12 percent. Although the data support the existence of a single HD locus, use of the G8 probe for presymptomatic testing in these kindreds would have resulted in a 12 percent error rate in genotype assignment at the HD locus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Folstein, S E -- Phillips, J A 3rd -- Meyers, D A -- Chase, G A -- Abbott, M H -- Franz, M L -- Waber, P G -- Kazazian, H H Jr -- Conneally, P M -- Hobbs, W -- AM 13983/AM/NIADDK NIH HHS/ -- NS 16367/NS/NINDS NIH HHS/ -- NS 16375/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1985 Aug 23;229(4715):776-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2992086" target="_blank"〉PubMed〈/a〉
    Keywords: *Chromosomes, Human, 4-5 ; DNA Restriction Enzymes ; DNA, Recombinant ; Female ; Genetic Linkage ; Humans ; Huntington Disease/*genetics ; Male ; Pedigree ; Recombination, Genetic ; Risk
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 1985-01-04
    Description: Accumulation of very long chain fatty acids in X-linked and neonatal forms of adrenoleukodystrophy (ALD) appears to be a consequence of deficient peroxisomal oxidation of very long chain fatty acids. Peroxisomes were readily identified in liver biopsies taken from a patient having the X-linked disorder. However, in liver biopsies from a patient having neonatal-onset ALD, hepatocellular peroxisomes were greatly reduced in size and number, and sedimentable catalase was markedly diminished. The presence of increased concentrations of serum pipecolic acid and the bile acid intermediate, trihydroxycoprostanic acid, in the neonatal ALD patient are associated with a generalized diminution of peroxisomal activities that was not observed in the patient with X-linked ALD.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goldfischer, S -- Collins, J -- Rapin, I -- Coltoff-Schiller, B -- Chang, C H -- Nigro, M -- Black, V H -- Javitt, N B -- Moser, H W -- Lazarow, P B -- AG-01468/AG/NIA NIH HHS/ -- AM-17702/AM/NIADDK NIH HHS/ -- N5-03356/PHS HHS/ -- etc. -- New York, N.Y. -- Science. 1985 Jan 4;227(4682):67-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3964959" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenoleukodystrophy/genetics/metabolism/*pathology ; Adult ; Animals ; Bile Acids and Salts/metabolism ; Catalase/metabolism ; Child ; Child, Preschool ; Diffuse Cerebral Sclerosis of Schilder/*pathology ; Female ; Humans ; Liver/pathology ; Male ; Microbodies/*pathology ; Oxidation-Reduction ; Pipecolic Acids/blood ; Rats ; *X Chromosome
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
    Publication Date: 1985-02-22
    Description: Two independent methods were used to identify the mouse chromosomes on which are located two families of immunoglobulin (Ig)-like genes that are rearranged and expressed in T lymphocytes. The genes coding for the alpha subunit of T-cell receptors are on chromosome 14 and the gamma genes, whose function is yet to be determined, are on chromosome 13. Since genes for the T-cell receptor beta chain were previously shown to be on mouse chromosome 6, all three of the Ig-like multigene families expressed and rearranged in T cells are located on different chromosomes, just as are the B-cell multigene families for the Ig heavy chain, and the Ig kappa and lambda light chains. The findings do not support earlier contentions that genes for T-cell receptors are linked to the Ig heavy chain locus (mouse chromosome 12) or to the major histocompatibility complex (mouse chromosome 17).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kranz, D M -- Saito, H -- Disteche, C M -- Swisshelm, K -- Pravtcheva, D -- Ruddle, F H -- Eisen, H N -- Tonegawa, S -- CA-24051/CA/NCI NIH HHS/ -- CA-28900-04/CA/NCI NIH HHS/ -- GM 30476-03/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1985 Feb 22;227(4689):941-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3918347" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Chromosome Mapping ; Cricetinae ; Cricetulus ; Genes ; Humans ; Hybrid Cells/metabolism ; Immunoglobulin Heavy Chains/*genetics ; Immunoglobulin alpha-Chains/*genetics ; Immunoglobulin gamma-Chains/*genetics ; Major Histocompatibility Complex ; Mice ; Receptors, Antigen, T-Cell/*genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 1985-03-01
    Description: Hemorrhagic fever with renal syndrome (HFRS) comprises a variety of clinically similar diseases of viral etiology that are endemic to and sporadically epidemic throughout the Eurasian continent and Japan. Although HFRS has not been reported in North America, viruses that are antigenically similar to HFRS agents were recently isolated from rodents in the United States. Examination and comparison of eight representative isolates from endemic disease areas and from regions with no known associated HFRS indicate that these viruses represent a new and unique group that constitutes a separate genus in the Bunyaviridae family of animal viruses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schmaljohn, C S -- Hasty, S E -- Dalrymple, J M -- LeDuc, J W -- Lee, H W -- von Bonsdorff, C H -- Brummer-Korvenkontio, M -- Vaheri, A -- Tsai, T F -- Regnery, H L -- New York, N.Y. -- Science. 1985 Mar 1;227(4690):1041-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2858126" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Viral/immunology ; Arvicolinae ; Base Sequence ; Bunyaviridae/genetics ; Hantavirus/genetics/*immunology ; Hemorrhagic Fever with Renal Syndrome/genetics/immunology/*microbiology ; Humans ; Korea ; Mice ; Muridae ; Neutralization Tests ; RNA Viruses/*immunology ; Radioimmunoassay ; Rats ; Rats, Inbred Strains ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 327 (1985), S. 487-504 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Derivatization of Amines with 4-Substitured 7-NitrobenzofurazansElectrophilc derivatives of 4-nitro-benzofurazan with different reactivities were used to synthesize 28 new mono- and disubstituted 4-amino-7-nitrobenzofurazans 2b, 2d, 2f-2i, 2l, 2m-2n, 3b-3f, 3h-3j, 4e-4d, 4f-4k, 4m, 4o-4p. A reaction mechanism is proposed on the basis of the differences of the reactivities and a preliminary kinetic examination. The acid character of the N—H-function in monosubstituted compounds is demonstrated by means of spectroscopical investigation of pKa-values.Data from i.r., u. v./vis, and fluorescence studies are offered.
    Additional Material: 3 Ill.
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  • 10
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 327 (1985), S. 45-50 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Electrochemical Carboxylation of Cinnamoyl-1,1-bis(alkylthio)ethylenesCinnamoyl-1,1-bis(alkylthio)ethylenes (1a-1h) are reduced electrochemically in the presence of carbondioxide in aprotic media. The attack of CO2 takes place either in 1- or 5-position of cinnamoyl-1, 1-bis(alkylthio)ethylenes (1a-1h) depending on the nature of the aryl substituents. If CO2 reacts in position 1 carbonic acids 3 are obtained, reaction of carbondioxide in 5- position leads to the acids 2. The effects of different aryl substituents on the halfwave potentials and the preparative electrolyses have been investigated.
    Additional Material: 1 Ill.
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