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  • Cells, Cultured  (24)
  • American Association for the Advancement of Science (AAAS)  (24)
  • Blackwell Publishing Ltd
  • 1980-1984  (24)
  • 1984  (14)
  • 1980  (10)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (24)
  • Blackwell Publishing Ltd
Years
  • 1980-1984  (24)
Year
  • 1
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    Bioactive conformation of luteinizing hormone-releasing hormone: evidence from a conformationally constrained analog (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-11-07
    Description: An analog of luteinizing hormone-releasing hormone containing a gamma-lactam as a conformational constraint has been prepared with the use of a novel cyclization of a methionine sulfonium salt. The analog is more active as a luteinizing hormone-releasing hormone agonist that the parent hormone, and provides evidence for a bioactive conformation containing a beta-turn.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Freidinger, R M -- Veber, D F -- Perlow, D S -- Brooks, J R -- Saperstein, R -- New York, N.Y. -- Science. 1980 Nov 7;210(4470):656-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7001627" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Biological Assay ; Cells, Cultured ; Female ; *Gonadotropin-Releasing Hormone/analogs & derivatives ; Hydrogen Bonding ; Lactams ; Protein Conformation ; Rats ; Structure-Activity Relationship
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Transporting renal epithelium: culture in hormonally defined serum-free medium (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-11-21
    Description: A hormonally defined medium was used to isolate a homogeneous epithelioid cell population from canine kidney. Monolayers of these cells form domes, an indication of active ion transport, and this process is inhibited by ouabain. This technique allows the isolation of primary cultures of renal epithelial cells, free of fibroblasts, for the characterization of biochemical and physiological properties related to renal function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jefferson, D M -- Cobb, M H -- Gennaro, J F Jr -- Scott, W N -- New York, N.Y. -- Science. 1980 Nov 21;210(4472):912-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7434005" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Transport, Active ; Cell Adhesion ; Cells, Cultured ; Culture Media ; Dogs ; Epithelium/metabolism ; Female ; Kidney/*cytology ; Male ; Sodium/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    (-)Pentobarbital opens ion channels of long duration in cultured mouse spinal neurons (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-07-25
    Description: Intracellular recordings from voltage-clamped mouse spinal neurons in tissue culture were used to study the membrane mechanisms underlying inhibitory responses to gamma-aminobutyric acid and the (-) isomer of pentobarbital. Fluctuation analysis suggested that both substances activated ion channels in the membranes. However, the channels activated by pentobarbital remained open five times longer than those activated by gamma-aminobutyric acid.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mathers, D A -- Barker, J L -- New York, N.Y. -- Science. 1980 Jul 25;209(4455):507-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6248961" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Membrane/drug effects/physiology ; Cells, Cultured ; Ion Channels/drug effects/*physiology ; Membrane Potentials/drug effects ; Mice ; Neurons/drug effects/*physiology ; Pentobarbital/*pharmacology ; Spinal Cord/*physiology ; gamma-Aminobutyric Acid/pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Isolation of mutants of an animal virus in bacteria (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-09-19
    Description: Mutants of animal viruses can be isolated in bacteria by recombinant DNA methods. Since no viral functions are required for propagation of recombinants in bacteria, viral mutants with lethal changes in cis- or trans-acting elements can be isolated, as well as partially or conditionally defective mutants. In the cases of viruses with small DNA genomes, such as the tumorigenic simian virus 40 (SV40), the entire viral DNA can be inserted into the bacterial plasmid pBR322 and cloned in Escherichia coli. Recombinant plasmids with a single copy of SV40 DNA cause morphological transformation of mouse cells in culture with the same efficiency as SV40 DNA isolated from virus-infected monkey cells, but the recombinant DNA is noninfectious and replicates poorly in permissive cells. However, SV40 DNA excised from the plasmid replicates as well as authentic viral DNA and is fully infectious. SV40 mutants with small deletions or base substitutions have been isolated by in vitro site-specific or random local mutagenesis of recombinant DNA followed by cloning in E. coli. Many of the mutants thus isolated are defective in specific viral functions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peden, K W -- Pipas, J M -- Pearson-White, S -- Nathans, D -- New York, N.Y. -- Science. 1980 Sep 19;209(4463):1392-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6251547" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Neoplasm/*genetics ; Antigens, Viral/genetics ; Cell Transformation, Viral ; Cells, Cultured ; Chromosome Deletion ; DNA, Recombinant ; DNA, Viral/*genetics ; Escherichia coli ; *Mutation ; Simian virus 40/*genetics ; Viral Proteins/*genetics ; Virus Replication
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    "Transdifferentiation" of C6 glial cells in culture (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-04-11
    Description: The activities of cyclic nucleotide phosphohydrolase, an enzyme marker for oligodendrocytes, and glutamine synthetase, an enzyme marker for astrocytes, were studied at early (21 to 26) and late (82 to 88) cell passages. The activity of cyclic nucleotide phosphohydrolase was markedly high and that of glutamine synthetase was low in the early passages, but this relation was reversed in the late passages. These findings suggest a "transdifferentiation" of C6 glial cells with passage in culture.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Parker, K K -- Norenberg, M D -- Vernadakis, A -- New York, N.Y. -- Science. 1980 Apr 11;208(4440):179-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6102413" target="_blank"〉PubMed〈/a〉
    Keywords: 2',3'-Cyclic-Nucleotide Phosphodiesterases/metabolism ; Animals ; Astrocytes/enzymology ; *Cell Differentiation ; Cells, Cultured ; Glutamate-Ammonia Ligase/metabolism ; Neuroglia/*enzymology ; Oligodendroglia/enzymology ; Rats
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    Cells isolated from the embryonic neural retina differ in behavior in vitro and membrane structure (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-08-29
    Description: Several subpopulations of cells were isolated from trypsin-dissociated embryonic (14 days) chick retinas. The cells of each subpopulation differed in associative behavior measured by cell aggregation and stationary culture assays and in glycoproteins that contain glucosamine. Freeze-fracture analysis showed that these populations also differed in intramembrane particle content.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sheffield, J B -- Pressman, D -- Lynch, M -- New York, N.Y. -- Science. 1980 Aug 29;209(4460):1043-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7403867" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Adhesion ; Cell Fractionation/methods ; Cell Membrane/ultrastructure ; Cells, Cultured ; Chick Embryo ; Membrane Proteins/metabolism ; Retina/cytology/*embryology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 7
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    Human rotavirus type 2: cultivation in vitro (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-01-11
    Description: A strain of type 2 human rotavirus (Wa) was grown to relatively high titer through 14 passages in primary cultures of African green monkey kidney (AGMK) cells. This passage series was initiated with virus that had been passaged 11 times serially in newborn gnotobiotic piglets. In contrast, virus present in the stool of patient Wa as well as virus from the first, second, or third passage in piglets could not be propagated successfully in African green monkey kidney cells. Prior to each passage in cell culture, the virus was treated with trypsin and the inoculated cultures were centrifuged at low speed. Cultivation of a type 2 human rotavirus should aid attempts to characterize this virus and to develop a means of immunoprophylaxis for a serious diarrheal disease of human infants.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wyatt, R G -- James, W D -- Bohl, E H -- Theil, K W -- Saif, L J -- Kalica, A R -- Greenberg, H B -- Kapikian, A Z -- Chanock, R M -- New York, N.Y. -- Science. 1980 Jan 11;207(4427):189-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6243190" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Viral/analysis ; Cells, Cultured ; Diarrhea, Infantile/microbiology ; Germ-Free Life ; Haplorhini ; Humans ; Infant ; RNA Viruses/*growth & development ; Rotavirus/*growth & development/immunology ; Swine
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Isolation and culture of a tetraploid subpopulation of smooth muscle cells from the normal rat aorta (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-11-02
    Description: Smooth muscle cells with 4C (double diploid) DNA content have been found in major arteries. The proportion of 4C cells increases with normal aging and with hypertension. These cells may represent a state of arrest at the G2 phase of the cell cycle or may be examples of true tetraploidy. Flow cytometric cell sorting was used to isolate 4C smooth muscle cells from the rat aorta, and the cells were cultured. Flow cytometry, Feulgen microdensitometry, and karyotyping of the progeny of the 4C cells established the presence of true tetraploid cells. These findings demonstrate the presence of reproductively viable tetraploid cells in a normal mammalian tissue.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goldberg, I D -- Rosen, E M -- Shapiro, H M -- Zoller, L C -- Myrick, K -- Levenson, S E -- Christenson, L -- 5-P01-CA-12662/CA/NCI NIH HHS/ -- AG00599/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 1984 Nov 2;226(4674):559-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6494901" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aorta, Thoracic/analysis/*cytology ; Cells, Cultured ; DNA/analysis ; Flow Cytometry ; Humans ; Karyotyping ; Muscle, Smooth, Vascular/analysis/*cytology ; *Polyploidy ; Rats ; Rats, Inbred Strains
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Serotonin selectively inhibits growth cone motility and synaptogenesis of specific identified neurons (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-11-02
    Description: The motile activity of growth cones of specific identified neurons is inhibited by the neurotransmitter serotonin, although other identified neurons are unaffected. As a consequence, affected neurons are unable to form electrical synapses, whereas other neurons whose growth is unaffected can still interconnect. This result demonstrates that neurotransmitters can play a prominent role in regulating neuronal architecture and connectivity in addition to their classical role in neurotransmission.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Haydon, P G -- McCobb, D P -- Kater, S B -- HD18577/HD/NICHD NIH HHS/ -- NS15350/NS/NINDS NIH HHS/ -- NS18819/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1984 Nov 2;226(4674):561-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6093252" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Population Groups ; Animals ; Cells, Cultured ; Neurons/*drug effects/growth & development ; Serotonin/*pharmacology ; Snails ; Synapses/*drug effects ; Synaptic Transmission
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Monoclonal antibody to Thy-1 enhances regeneration of processes by rat retinal ganglion cells in culture (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-04-20
    Description: Ganglion cells were dissociated from postnatal rat retinas, identified by specific fluorescent labels, and maintained in culture on a variety of substrates. Regeneration of processes by retinal ganglion cells was enhanced when the cells were plated on glass coated with a monoclonal antibody against the Thy-1 determinant. Plain glass and glass coated with polylysine, collagen, fibronectin, or other monoclonal antibodies supported the growth of neural processes, but were less effective than antibody to Thy-1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leifer, D -- Lipton, S A -- Barnstable, C J -- Masland, R H -- EY01075/EY/NEI NIH HHS/ -- EY03735/EY/NEI NIH HHS/ -- EY04179/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1984 Apr 20;224(4646):303-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6143400" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal/*physiology ; Antigens, Surface/*immunology ; Antigens, Thy-1 ; Cell Adhesion ; Cells, Cultured ; Isoantibodies/*physiology ; *Nerve Regeneration ; Polylysine/pharmacology ; Rats ; Retina/cytology/*physiology ; Retinal Ganglion Cells/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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