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  • Cells, Cultured  (89)
  • American Association for the Advancement of Science (AAAS)  (89)
  • American Institute of Physics
  • American Institute of Physics (AIP)
  • Annual Reviews
  • Periodicals Archive Online (PAO)
  • 2005-2009
  • 1990-1994
  • 1980-1984  (89)
  • 1950-1954
  • 1983  (47)
  • 1981  (42)
  • 1950
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (89)
  • American Institute of Physics
  • American Institute of Physics (AIP)
  • Annual Reviews
  • Periodicals Archive Online (PAO)
Years
  • 2005-2009
  • 1990-1994
  • 1980-1984  (89)
  • 1950-1954
Year
  • 1
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    Malignant potential of murine stromal cells after transplantation of human tumors into nude mice (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-04-03
    Description: Human malignant cancer tumors grafted into nude mice produce tumors containing both human cancer cells and the host's stromal cells. After short-term propagation of these tumors in vitro, the murine mesenchymal cells appear transformed and are tumorigenic in nude mice. However, established human cancer cell lines fail to similarly after adjacent murine stromal cells when used to produce tumors in nude mice. These experiments suggest that cancer cells may recruit normal cells to become malignant, qualifying the view of the clonal (unicellular) origin of cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goldenberg, D M -- Pavia, R A -- 1R01 CA17198/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Apr 3;212(4490):65-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209521" target="_blank"〉PubMed〈/a〉
    Keywords: Adenocarcinoma/pathology ; Animals ; Cell Line ; Cells, Cultured ; Colonic Neoplasms/pathology ; Fibrosarcoma/*etiology ; Humans ; Karyotyping ; Mice ; Mice, Inbred BALB C ; Mice, Nude ; Middle Aged ; Neoplasm Transplantation ; Neoplasms, Experimental/*etiology ; Transplantation, Heterologous
    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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    Radiosensitivity of human cells in vitro (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-04-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Furcinitti, P S -- Todd, P -- New York, N.Y. -- Science. 1981 Apr 3;212(4490):6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209518" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Survival/*radiation effects ; Cells, Cultured ; Dose-Response Relationship, Radiation ; HeLa Cells/radiation effects ; Humans
    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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    Voltage clamp studies in macrophages from mouse spleen cultures (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-10-23
    Description: Voltage clamp studies of macrophages from cultures of mouse spleen macrophages produced N-shaped steady-state current-voltage curves containing a region of negative slope resistance. Some macrophages exhibit two stable states of membrane potential, having current-voltage relationships that cross the voltage axis at three points. Outward currents that turn on at voltages of +15 millivolts or greater were noted in several cells. The addition of barium chloride to the bathing medium abolished the negative slope resistance and reduced the inward currents in response to hyperpolarizing voltage steps. These data provide direct evidence that macrophages exhibit at least tow different voltage-dependent conductances and demonstrate that voltage clamp techniques can be useful in studying the membrane properties of leukocytes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gallin, E K -- New York, N.Y. -- Science. 1981 Oct 23;214(4519):458-60.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7291986" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Barium/pharmacology ; Cell Membrane/physiology ; Cells, Cultured ; Electric Conductivity ; Macrophages/*physiology ; Membrane Potentials ; Mice ; Spleen/cytology
    Print ISSN: 0036-8075
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  • 4
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    Multiple opiate receptors: alcohol selectively inhibits binding to delta receptors (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-10-23
    Description: The addition of ethanol or other aliphatic alcohols to rat brain membranes strongly inhibits binding of enkephalins at concentrations at which little inhibition of opiate alkaloids is seen. Inhibition is reversible, and potency increases with chain length of the alcohol. The results suggest that delta receptors are considerably more sensitive to alcohols than mu receptors. This is the first demonstration of selective inhibition of one of the postulated classes of opiate receptors by a reagent that is not a ligand for the receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hiller, J M -- Angel, L M -- Simon, E J -- DA-00017/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1981 Oct 23;214(4519):468-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6270788" target="_blank"〉PubMed〈/a〉
    Keywords: Alcohols/*pharmacology ; Animals ; Brain/metabolism ; Cells, Cultured ; In Vitro Techniques ; Neuroblastoma/metabolism ; Rats ; Receptors, Opioid/classification/*drug effects/metabolism ; Structure-Activity Relationship
    Print ISSN: 0036-8075
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  • 5
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    Divalent cation ionophores stimulate resorption and inhibit DNA synthesis in cultured fetal rat bone (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-06-05
    Description: Two divalent cation ionophores, A23187 and Ionomycin, which are selective for calcium, stimulated the resorption of fetal rat long bones in organ culture at 0.1 to 1 micromolar but not at higher concentrations. Both agents inhibited DNA synthesis at concentrations that stimulated resorption. These results might explain the differences in ionophore effects on bone previously reported, and they imply that cell replication is not required for osteoclast formation in fetal rat long bone cultures.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lorenzo, J A -- Raisz, L G -- AM 07290/AM/NIADDK NIH HHS/ -- AM 18063/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Jun 5;212(4499):1157-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6785885" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-Bacterial Agents/*pharmacology ; Bone Resorption/*drug effects ; Bone and Bones/drug effects/*metabolism ; Calcimycin/*pharmacology ; Calcium/metabolism ; Calcium Radioisotopes ; Cells, Cultured ; DNA/*biosynthesis ; DNA Replication/*drug effects ; Ethers/pharmacology ; Fetus ; Ionomycin ; Ionophores/pharmacology ; Kinetics ; Mice ; Parathyroid Hormone/pharmacology
    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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    Falciparum malaria-infected erythrocytes specifically bind to cultured human endothelial cells (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-07-31
    Description: Erythrocytes infected with the late stages of the human malarial parasite Plasmodium falciparum became attached to a subpopulation of cultured human endothelial cells by knoblike protrusions on the surface of the infected erythrocytes. Infected erythrocytes did not bind to cultured fibroblasts; uninfected erythrocytes did not bind to either endothelial cells or fibroblasts. The results suggest a specific receptor-ligand interaction between endothelial cells and a component, components, in the knobs of the infected erythrocytes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Udeinya, I J -- Schmidt, J A -- Aikawa, M -- Miller, L H -- Green, I -- New York, N.Y. -- Science. 1981 Jul 31;213(4507):555-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7017935" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aotus trivirgatus ; Cells, Cultured ; Endothelium/microbiology ; Erythrocytes/*microbiology/ultrastructure ; Female ; Humans ; Microscopy, Electron ; Plasmodium falciparum/*pathogenicity ; Pregnancy ; Umbilical Veins
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Hormonal requirements for growth of arterial smooth muscle cells in vitro: and endocrine approach to atherosclerosis (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-15
    Description: In this study the hormonal requirements for the growth of arterial smooth muscle cells in vitro were determined. A serum-free, biochemically defined medium, supplemented with the relevant hormones, permitted proliferation and propagation of normal diploid mammalian arterial smooth muscle cells. Serum-free, hormone-supplemented cultures spontaneously formed atherosclerotic plaque-like nodules. Thus atherosclerosis may be mediated by a complex endocrine system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weinstein, R -- Stemerman, M B -- Maciag, T -- AM 07026/AM/NIADDK NIH HHS/ -- HL 06197/HL/NHLBI NIH HHS/ -- HL 07374/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1981 May 15;212(4496):818-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7013068" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aorta, Abdominal/cytology ; Cell Division/drug effects ; Cells, Cultured ; Culture Media ; Growth Substances/pharmacology ; Hormones/*pharmacology ; Insulin/pharmacology ; Muscle, Smooth, Vascular/*cytology ; Rats ; Transferrin/pharmacology
    Print ISSN: 0036-8075
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  • 8
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    Homeostasis of the antibody response: immunoregulation by NK cells (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-11-11
    Description: When injected into mice, the synthetic double-stranded polynucleotide poly(inosinic) X poly(cytidylic) acid induces high natural killer (NK) cell activity within 4 to 12 hours. Induction of NK activity in mice immunized 2 or 3 days previously, or the addition of NK cells to cultures immunized in vitro 2 or 3 days previously, promotes early termination of the ongoing primary immunoglobulin M antibody response. A target for NK cells is a population of accessory cells that has interacted with antigen and is necessary for sustaining the antibody response. The inference is strong that NK cells induced normally by immunization also terminate the usual antibody response in vivo by elimination of antigen-exposed accessory cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abruzzo, L V -- Rowley, D A -- 5-T32-CA-09267/CA/NCI NIH HHS/ -- R01-10242/PHS HHS/ -- New York, N.Y. -- Science. 1983 Nov 11;222(4624):581-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6685343" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antibody Formation ; Antibody-Producing Cells/immunology ; Cells, Cultured ; Homeostasis ; Killer Cells, Natural/*immunology/radiation effects ; Lymphocyte Cooperation ; Lymphocytes/*immunology ; Mice ; Poly I-C/immunology ; Spleen/immunology
    Print ISSN: 0036-8075
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  • 9
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    Primary murine bone marrow cultures support continuous growth of infectious human trypanosomes (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-04-22
    Description: The human parasite Trypanosoma brucei gambiense grew continuously at 37 degrees C in primary cultures of murine bone marrow. Cultured parasites remained virulent for mice. Rapid parasite growth coincided with the appearance of adherent adipocyte-epitheloid cell aggregates that also promoted hematopoiesis. This culture system should permit studies of host cell control of trypanosome proliferation, pathogenic effects of trypanosomes on blood cell development, and the relative trypanocidal and marrow suppressive activities of drugs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balber, A E -- CA 14049/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Apr 22;220(4595):421-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836284" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Bone Marrow ; Cells, Cultured ; Culture Media ; Humans ; Mice ; Mice, Inbred BALB C ; Trypanosoma brucei brucei/growth & development ; Trypanosoma brucei gambiense/*growth & development ; Trypanosomiasis, African/parasitology
    Print ISSN: 0036-8075
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  • 10
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    Collagen formation by the hepatocyte in primary monolayer culture and in vivo (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-03-18
    Description: Immunohistochemical techniques were used to confirm biochemical evidence that parenchymal cells isolated from adult rat liver and maintained in nonreplicating monolayer culture for 2 days synthesized type IV basement membrane collagen. On continued incubation in serum-free medium, the hepatocytes also synthesized the interstitial collagens, types I and III. Consistent with these results in culture, type IV collagen was localized to the hepatocytes in slices of pathologic rat liver. Hence collagen formation is a previously unrecognized function of the hepatocyte that may be important in the pathogenesis of liver fibrosis or cirrhosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Diegelmann, R F -- Guzelian, P S -- Gay, R -- Gay, S -- AM18976/AM/NIADDK NIH HHS/ -- DE02570/DE/NIDCR NIH HHS/ -- HL11310/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Mar 18;219(4590):1343-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828863" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Basement Membrane/metabolism ; Cells, Cultured ; Collagen/*biosynthesis/immunology ; Liver/cytology/*metabolism ; Molecular Weight ; 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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  • 11
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    Transformation of Bloom's syndrome fibroblasts by DNA transfection (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-12-09
    Description: Nonmalignant diploid human fibroblast cells (GM3498B) derived from a skin biopsy of a patient with Bloom's syndrome have been transformed by transfection with DNA from a tumorigenic mouse cell line (Ha-8) carrying a single copy of the Harvey murine sarcoma virus (Ha-MuSV) genome. The transformed cell lines have an extended life-span, form colonies in agarose, and proliferate in nude mice--characteristics of neoplastic transformation. Like the parental cells, they also exhibit a high spontaneous level of sister chromatid exchanges. Finally, the transformed cells contain most, if not all, of the Ha-MuSV genome as well as the human rasH sequence. These experiments show that these diploid nonmalignant human cells can be used as recipients in transfection experiments for studying the genetic control of neoplastic transformation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Doniger, J -- Di Paolo, J A -- Popescu, N C -- New York, N.Y. -- Science. 1983 Dec 9;222(4628):1144-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6648529" target="_blank"〉PubMed〈/a〉
    Keywords: Bloom Syndrome/*genetics ; Cell Adhesion ; *Cell Transformation, Neoplastic ; Cells, Cultured ; DNA, Neoplasm/*genetics ; Humans ; Oncogenes ; Transfection
    Print ISSN: 0036-8075
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  • 12
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    Formaldehyde damage to DNA and inhibition of DNA repair in human bronchial cells (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-04-08
    Description: Cultured bronchial epithelial and fibroblastic cells from humans were used to study DNA damage and toxicity caused by formaldehyde. Formaldehyde caused the formation of cross-links between DNA and proteins, caused single-strand breaks in DNA, and inhibited the resealing of single-strand breaks produced by ionizing radiation. Formaldehyde also inhibited the unscheduled DNA synthesis that occurs after exposure of cells to ultraviolet irradiation or to benzo[a]pyrene diolexpoxide but at doses substantially higher than those required to inhibit the resealing of x-ray-induced single-strand breaks. Therefore, formaldehyde could exert its mutagenic and carcinogenic effects by both damaging DNA and inhibiting DNA repair.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grafstrom, R C -- Fornace, A J Jr -- Autrup, H -- Lechner, J F -- Harris, C C -- New York, N.Y. -- Science. 1983 Apr 8;220(4593):216-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828890" target="_blank"〉PubMed〈/a〉
    Keywords: Bronchi/*cytology/drug effects ; Cells, Cultured ; *DNA/biosynthesis ; DNA Repair/*drug effects ; Epithelium/drug effects ; Fibroblasts/drug effects ; Formaldehyde/*pharmacology ; Humans
    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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    Neuron-glia adhesion is inhibited by antibodies to neural determinants (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-10-07
    Description: Suspensions of embryonic chick neuronal cells adhered to monolayers of glial cells, but few neurons bound to control monolayers of fibroblastic cells from meninges or skin. Neuronal cell-glial cell adhesion was inhibited by prior incubation of the neurons with Fab' fragments of antibodies to neuronal membranes. In contrast, antibodies to the neural cell adhesion molecule (N-CAM) did not inhibit the binding. These results suggest that a specific adhesive mechanism between neurons and glial cells exists and that it is mediated by CAM's that differ from those so far identified.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grumet, M -- Rutishauser, U -- Edelman, G M -- AI-11378/AI/NIAID NIH HHS/ -- HD-09635/HD/NICHD NIH HHS/ -- HD-16550/HD/NICHD NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Oct 7;222(4619):60-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6194561" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; Antigen-Antibody Complex ; *Cell Adhesion ; Cell Membrane/immunology ; Cells, Cultured ; Chick Embryo ; Epitopes ; Immunoglobulin Fab Fragments ; Neuroglia/*physiology ; Neurons/immunology/*physiology
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  • 14
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    Tumor-derived growth factor increases bone resorption in a tumor associated with humoral hypercalcemia of malignancy (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-09-23
    Description: Evidence is presented that a tumor-derived transforming growth factor is responsible for stimulating bone resorption and causing hypercalcemia in an animal tumor model of the hypercalcemia of malignancy. Both conditioned medium harvested from cultured tumor cells and tumor extracts of the transplantable rat Leydig cell tumor associated with hypercalcemia contained a macromolecular bone resorbing factor with the chemical characteristics of a tumor-derived transforming growth factor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ibbotson, K J -- D'Souza, S M -- Ng, K W -- Osborne, C K -- Niall, M -- Martin, T J -- Mundy, G R -- AM-28149/AM/NIADDK NIH HHS/ -- CA-29537/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Sep 23;221(4617):1292-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6577602" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Bone Resorption ; Calcium ; Cells, Cultured ; Culture Media ; Growth Substances/*physiology ; Hypercalcemia/*etiology ; Leydig Cell Tumor/complications/*physiopathology ; Male ; Neoplasm Proteins/*physiology ; Neoplasms, Experimental/complications/physiopathology ; Peptides/*physiology ; Rats ; Transforming Growth Factors
    Print ISSN: 0036-8075
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  • 15
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    Fragile sites in chromosomes: possible model for the study of spontaneous chromosome breakage (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-04-01
    Description: The tissue culture condition that is required for the type of chromosome breakage seen at most fragile sites, namely, the absence of folic acid and thymidine in the medium, greatly enhanced micronucleus formation in proliferating lymphocyte cultures from normal individuals. This suggests that chromosome breakage at fragile sites and the apparently spontaneous damage that gives rise to micronuclei are controlled by the same mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jacky, P B -- Beek, B -- Sutherland, G R -- New York, N.Y. -- Science. 1983 Apr 1;220(4592):69-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828880" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Cell Nucleus/drug effects/ultrastructure ; Cells, Cultured ; Child ; *Chromosome Aberrations ; Chromosome Fragile Sites ; *Chromosome Fragility ; Culture Media ; Dose-Response Relationship, Drug ; Female ; Folic Acid/pharmacology ; Humans ; Lymphocytes/ultrastructure ; Male ; Middle Aged ; Thymidine/pharmacology
    Print ISSN: 0036-8075
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  • 16
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    Oxygen tension regulates the expression of angiogenesis factor by macrophages (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-09-23
    Description: When cultured in a hypoxic environment similar to that found in the center of a wound, macrophages secreted active angiogenesis factor into the medium. Under conditions similar to those of well-oxygenated tissue, macrophages did not secrete active angiogenesis factor. Macrophages that secreted the factor at hypoxic conditions stopped secreting it when returned to room air. Thus the control of angiogenesis in wound healing may be the result of macrophages responding to tissue oxygen tension without the necessity of interacting with other cell types or biochemical signals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Knighton, D R -- Hunt, T K -- Scheuenstuhl, H -- Halliday, B J -- Werb, Z -- Banda, M J -- GM27345/GM/NIGMS NIH HHS/ -- HL26323/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1983 Sep 23;221(4617):1283-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6612342" target="_blank"〉PubMed〈/a〉
    Keywords: Angiogenesis Inducing Agents/*biosynthesis ; Animals ; Anoxia/physiopathology ; Cells, Cultured ; Cornea ; Growth Substances/*biosynthesis ; Macrophages/*physiology ; Models, Biological ; Oxygen/*physiology ; Rabbits ; *Wound Healing
    Print ISSN: 0036-8075
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  • 17
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    Drug-induced alterations of cytokeratin organization in cultured epithelial cells (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-02-04
    Description: The distribution of keratin intermediate filaments, previously considered static in organization and imperturbable by conventional drugs used to alter the structure and organization of the cytoskeleton, can be altered significantly by treatment with colchicine and cytochalasin D. The loss of microfilaments and microtubules converts the keratin cytoskeleton from a branching, even distribution to a series of starlike structures whose filaments are maintained by multiple membrane attachment sites. These findings provide a means for manipulating cytokeratin organization to investigate the role of keratins in cytoskeletal structure and function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Knapp, L W -- O'Guin, W M -- Sawyer, R H -- New York, N.Y. -- Science. 1983 Feb 4;219(4584):501-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6186022" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Colchicine/*pharmacology ; Cytochalasin D ; Cytochalasins/*pharmacology ; Cytoskeleton/*drug effects ; Epithelium ; *Keratins ; Mice ; Microtubules/drug effects
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  • 18
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    Human endothelial cells: use of heparin in cloning and long-term serial cultivation (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-11-11
    Description: Endothelial cells from human blood vessels were cultured in vitro, with doubling times of 17 to 21 hours for 42 to 79 population doublings. Cloned human endothelial cell strains were established for the first time and had similar proliferative capacities. This vigorous cell growth was achieved by addition of heparin to culture medium containing reduced concentrations of endothelial cell growth factor. The routine cloning and long-term culture of human endothelial cells will facilitate studying the human endothelium in vitro.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thornton, S C -- Mueller, S N -- Levine, E M -- AG-00839/AG/NIA NIH HHS/ -- T32-CA-09171/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Nov 11;222(4624):623-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6635659" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Division/drug effects ; Cells, Cultured ; Clone Cells/enzymology ; Endothelium/*cytology ; Growth Substances/pharmacology ; Heparin/*pharmacology ; Humans ; Time Factors
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  • 19
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    Interaction with membrane remnants of target myotubes maintains transmitter sensitivity of cultured neurons (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-05-27
    Description: Parasympathetic neurons, when cultured alone, lose sensitivity to acetylcholine, but if striated muscle is included in the culture, neuronal chemosensitivity is maintained. The membrane remnants of myotubes ruptured by osmotic shock also supported the responsiveness of the cultured neurons to transmitter, whereas muscle-conditioned medium or membrane remnants of nonmuscle embryonic skin cells did not support this responsiveness. The regulation of chemosensitivity by contact of neurons with the target cell membrane may be important in the formation and maintenance of neuronal circuitry.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tuttle, J B -- NS-10338/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 May 27;220(4600):977-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6133352" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/physiology ; Animals ; Cell Membrane/physiology ; Cells, Cultured ; Chick Embryo ; Fibroblasts/physiology ; Muscles/*physiology ; Nervous System/growth & development ; Neurons/*physiology ; Neurotransmitter Agents/*physiology ; Synapses/physiology
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  • 20
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    High-frequency transfection and cytopathology of the hepatitis B virus core antigen gene in human cells (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-10-28
    Description: A protoplast fusion method was developed to stably transfect human cells with pSV2-derived plasmids at frequencies greater than 10(-3). This procedure made it possible to test the biological effect of a hepatitis B virus (HBV) gene independent of the viral structures required for infection. A pSV2gpt+ plasmid constructed to carry a subgenomic fragment of HBV that contained the core antigen gene (HBc gene) was transfected into human cells. A human epithelial cell line was stably transfected with the HBc+ gene by selecting recipient cells for expression of guanine phosphoribosyl transferase expression. With this gpt+/HBc+ cell line it was shown that growth in serum-free medium or treatment with 5'-azacytidine stimulates the production of the HBV core antigen. A hepatocellular carcinoma carrying the entire HBV genome was stimulated to produce the HBc gene product in response to the same factors that stimulated HBcAg production in the gpt+/HBc+ cell line constructed by transfection. The temporal relation between the cytopathologic response and HBc gene expression was similar for both cell types, indicating a primary role for HBc gene expression in the cytopathology of HBV-infected human liver.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yoakum, G H -- Korba, B E -- Lechner, J F -- Tokiwa, T -- Gazdar, A F -- Seeley, T -- Siegel, M -- Leeman, L -- Autrup, H -- Harris, C C -- New York, N.Y. -- Science. 1983 Oct 28;222(4622):385-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6194563" target="_blank"〉PubMed〈/a〉
    Keywords: Azacitidine/pharmacology ; Cell Fusion ; *Cell Transformation, Viral ; Cells, Cultured ; Cytopathogenic Effect, Viral ; Gene Expression Regulation/drug effects ; Genes, Viral ; Hepatitis B Core Antigens/*genetics ; Humans ; Transfection
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  • 21
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    Insulin receptor: evidence that it is a protein kinase (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-01-21
    Description: Highly purified preparations of insulin receptor catalyzed the phosphorylation of the 95,000-dalton subunit of the insulin receptor. This subunit of the insulin receptor was also labeled with [alpha-32P]8-azidoadenosine 5'-triphosphate, a photoaffinity label for adenosine triphosphate binding sites. The identity of the 95,000-dalton band was confirmed in both cases by precipitation with a monoclonal antibody to the insulin receptor. These results suggest that the insulin receptor is itself a protein kinase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roth, R A -- Cassell, D J -- New York, N.Y. -- Science. 1983 Jan 21;219(4582):299-301.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6849137" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Cell Line ; Cells, Cultured ; Lymphocytes ; Molecular Weight ; Phosphoproteins/physiology ; Protein Kinases/*physiology ; Receptor, Insulin/*physiology
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  • 22
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    Recombination during gene transfer into mouse cells can restore the function of deleted genes (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-01-14
    Description: Two plasmids containing nonoverlapping deletions of the herpes simplex virus thymidine kinase gene were introduced into thymidine kinase-deficient mouse L cells by DNA-mediated gene transfer. Thymidine kinase-producing transformants were generated by a mixture of the two plasmids at a frequency significantly greater than that generated by either plasmid alone. Southern blot analyses demonstrated that functional thymidine kinase genes were generated by homologous recombination between the two deletion mutants.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Small, J -- Scangos, G -- New York, N.Y. -- Science. 1983 Jan 14;219(4581):174-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6294829" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cells, Cultured ; Chromosome Deletion ; *Genetic Engineering ; Mice ; Mutation ; *Plasmids ; *Recombination, Genetic ; Simplexvirus ; Thymidine Kinase/*genetics
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  • 23
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    Human macrophages armed with murine immunoglobulin G2a antibodies to tumors destroy human cancer cells (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-08-26
    Description: Macrophages isolated from tumor-bearing patients as well as cultured human monocytes express Fc receptors that cross-react strongly with murine immunoglobulins of the G2a but only slightly or not at all with the G1, G2b, or G3 subclasses. Such macrophages in the presence of murine immunoglobulin G2a monoclonal antibodies to tumors mediated the killing of tumor cells in vitro. These data suggest that monoclonal antibodies of the G2a subclass may be useful in the immunotherapy of human cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Steplewski, Z -- Lubeck, M D -- Koprowski, H -- CA-10815/CA/NCI NIH HHS/ -- CA-21124/CA/NCI NIH HHS/ -- CA-25874/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Aug 26;221(4613):865-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879183" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal/*immunology ; Cells, Cultured ; Cytotoxicity, Immunologic ; Humans ; *Immunity, Cellular ; Immunoglobulin G/immunology ; Immunotherapy ; Macrophages/*immunology ; Mice ; Monocytes/immunology ; Neoplasms, Experimental/immunology/therapy ; Receptors, Fc/*immunology ; Species Specificity
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  • 24
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    Hepatitis B virus infection in cultured human lymphoblastoid cells (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-08-12
    Description: Since it has been postulated that liver hepatocytes may become infected by hepatitis B virus (HBV) in vivo through direct contact with infected macrophages, the possibility that a circulating cell of hematopoietic origin might be susceptible to infection with HBV was investigated. Cells positive for HBV surface antigen were identified in aspirates of bone marrow cells from people infected with HBV. These cells were used to prepare a lymphoblastoid suspension culture that contains HBV-infected cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Romet-Lemonne, J L -- McLane, M F -- Elfassi, E -- Haseltine, W A -- Azocar, J -- Essex, M -- New York, N.Y. -- Science. 1983 Aug 12;221(4611):667-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6867736" target="_blank"〉PubMed〈/a〉
    Keywords: Cells, Cultured ; Hepatitis B/*microbiology/pathology ; Hepatitis B Surface Antigens/immunology ; Hepatitis B virus/growth & development ; Humans ; Liver/pathology ; Lymphocytes/*microbiology/pathology ; Male ; Middle Aged
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    Synaptic activity mediates death of hypoxic neurons (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-04-29
    Description: Cultured hippocampal neurons, when exposed to cyanide or an anoxic atmosphere in the early stages of differentiation, were not visibly affected. However, neurons in the mature cultures died when exposed to cyanide or anoxia. Cell death could be prevented by treatment with magnesium, which eliminates synaptic activity. These observations suggest that damage in hypoxic neurons is mediated by synaptic activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rothman, S M -- 5 K07 N500568-02/PHS HHS/ -- New York, N.Y. -- Science. 1983 Apr 29;220(4596):536-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836300" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials/drug effects ; Animals ; Anoxia/*metabolism/physiopathology ; Cells, Cultured ; Hippocampus/cytology ; Magnesium/pharmacology ; Magnesium Chloride ; Membrane Potentials/drug effects ; Neurons/metabolism/*physiology ; Rats ; Sodium Cyanide/pharmacology ; Synapses/drug effects/*physiology
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  • 26
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    Infection of normal human epithelial cells by Epstein-Barr virus (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-03-11
    Description: Primary cultures of epithelial cells were grown from the tonsils and adenoids of patients with diseases not related to Epstein-Barr virus. The cells could not be infected by Epstein-Barr virus. Fluorescein-labeled Epstein-Barr virus and a cytofluorograph were then used to show that the epithelial cells do not have detectable receptors for the virus. However, implantation with Epstein-Barr virus receptors gave the cells the ability to bind the labeled virus. One to 5 percent of receptor-implanted cells exposed to the transforming B95-8 substrain of the virus expressed Epstein-Barr nuclear antigen. The early and viral capsid Epstein-Barr virus-determined antigens were not detected in the virus-infected cultures. The results show that normal human epithelial cells from the nasopharynx become susceptible to infection by Epstein-Barr virus when the membrane barrier resulting from the lack of viral receptors is overcome by receptor implantation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shapiro, I M -- Volsky, D J -- 1R01 CA33386-01/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Mar 11;219(4589):1225-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6298935" target="_blank"〉PubMed〈/a〉
    Keywords: Cells, Cultured ; Epithelium/*microbiology ; Herpesviridae Infections/*microbiology ; Herpesvirus 4, Human/growth & development ; Humans ; Receptors, Virus/metabolism ; Virus Replication
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  • 27
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    Axonal proteins of presynaptic neurons during synaptogenesis (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-09-23
    Description: Changes occur in the synthesis and axonal transport of neuronal proteins in dorsal-root ganglia axons as a result of contact with cells from the spinal cord during synapse formation. Dorsal-root ganglia cells were cultured in a compartmental cel culture system that allows separate access to neuronal cell bodies and their axons. When cells from the ventral spinal cord were cultured with the dorsal-root ganglia axons, synapses were established within a few days. Metabolic labeling and two-dimensional electrophoresis revealed that four of more than 300 axonal proteins had changed in their expression by the time synapses were established. The highly selective nature of these changes suggests that the proteins involved may be important in the processes of axon growth and synapse formation and their regulation by the regional environment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sonderegger, P -- Fishman, M C -- Bokoum, M -- Bauer, H C -- Nelson, P G -- New York, N.Y. -- Science. 1983 Sep 23;221(4617):1294-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6612344" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/*metabolism ; Cells, Cultured ; Chick Embryo ; Isoelectric Point ; Molecular Weight ; Nerve Tissue Proteins/*biosynthesis ; Synapses/*metabolism
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    Latrunculins: novel marine toxins that disrupt microfilament organization in cultured cells (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-02-04
    Description: Two toxins, latrunculins A and B, which contain a new class of 16- and 14-membered marine macrolides attached to the rare 2-thiazolidinone moiety, were purified recently from the Red Sea sponge Latrunculia magnifica. The effects of these toxins on cultured mouse neuroblastoma and fibroblast cells have been evaluated. In both types of cells, submicromolar toxin concentrations rapidly induce striking changes in cell morphology that are reversible upon removal of the toxin. Immunofluorescence studies with antibodies specific for cytoskeletal proteins reveal that the toxins cause major alterations in the organization of microfilaments without obvious effects on the organization of the microtubular system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spector, I -- Shochet, N R -- Kashman, Y -- Groweiss, A -- New York, N.Y. -- Science. 1983 Feb 4;219(4584):493-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6681676" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/metabolism ; Animals ; *Bicyclo Compounds, Heterocyclic ; Cells, Cultured ; Cytoskeleton/*drug effects ; Fibroblasts/ultrastructure ; Marine Toxins/*pharmacology ; Microscopy, Fluorescence ; Microtubules/drug effects ; Neuroblastoma/ultrastructure ; Thiazoles/*pharmacology ; Thiazolidines
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    Diethylstilbestrol induces neoplastic transformation without measurable gene mutation at two loci (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-06-19
    Description: The frequency with which diethylstilbestrol induces neoplastic transformation and somatic mutation was measured concomitantly in Syrian hamster embryo cells. While diethylstilbestrol was as active as benzo[a]pyrene in inducing transformation, it failed to induce mutations at two conventionally studied loci. These results suggest that diethylstilbestrol may transform cells in the absence of gene mutations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barrett, J C -- Wong, A -- McLachlan, J A -- New York, N.Y. -- Science. 1981 Jun 19;212(4501):1402-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6262919" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Benzo(a)pyrene ; Benzopyrenes ; Carcinogens ; *Cell Transformation, Neoplastic ; Cells, Cultured ; Cricetinae ; Diethylstilbestrol/*pharmacology ; Embryo, Mammalian ; Genes/*drug effects ; Mesocricetus ; *Mutation
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  • 30
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    Conversion of 3T3-L1 fibroblasts to fat cells by an inhibitor of methylation: effect of 3-deazaadenosine (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-03-13
    Description: 3-Deazaadenosine, an inhibitor of methylation, increased the frequency of conversion of 3T3-L1 fibroblasts to fat cells in a dose-dependent manner. Once converted, the 3T3-L1 fat cells retained their adipose morphology and accumulated triglycerides even when 3-deazaadenosine was removed from the culture medium. 3-Deazaadenosine may perturb cellular methylation and thereby lead to an increase in the frequency of differentiation of 3T3-L1 fibroblasts to fat cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chiang, P K -- New York, N.Y. -- Science. 1981 Mar 13;211(4487):1164-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7466386" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue/*cytology ; Animals ; Carnitine/pharmacology ; Cell Differentiation/*drug effects ; Cells, Cultured ; Dose-Response Relationship, Drug ; Fibroblasts/cytology ; Methylation ; Mice ; Ribonucleosides/*pharmacology ; Tubercidin/*pharmacology
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    A conjugate of alpha-amanitin and monoclonal immunoglobulin G to Thy 1.2 antigen is selectively toxic to T lymphoma cells (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-09-18
    Description: A covalent conjugate of an alpha-amanitin azo derivative and a monoclonal immunoglobulin G to the Thy 1.2 antigen on murine T lymphocytes was synthesized. The conjugate was 375- to 750-fold more inhibitory to murine T lymphoma S49.1 cells than the unconjugated derivative. At 0.7 X 10(-7) to 1.5 X 10(-7) M and at 4 X 10(-7) M amanitin equivalents, the conjugate inhibited protein synthesis in S49.1 cells by 50 percent and 80 to 96 percent, respectively. At these concentrations, mutant Thy l-deficient S49 cells and other murine lymphoma lacking Thy l altogether or carrying Thy 1.1 antigens were unaffected. This result demonstrated the potential for targeting amanitin to specific cell types.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis, M T -- Preston, J F 3rd -- R01 CA 19043/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Sep 18;213(4514):1385-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6115471" target="_blank"〉PubMed〈/a〉
    Keywords: Amanitins/*administration & dosage ; Amino Acids/metabolism ; Animals ; Antibodies/administration & dosage ; Antibodies, Monoclonal ; Antigens, Surface/*immunology ; Antigens, Thy-1 ; Cells, Cultured ; Clone Cells/immunology ; Hybrid Cells/immunology ; Immunoglobulin G/*administration & dosage ; Lymphoma/*drug therapy ; Membrane Proteins/*immunology ; Mice ; Neoplasms, Experimental/drug therapy ; T-Lymphocytes/drug effects
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  • 32
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    Lateral diffusion of surface molecules in animal cells and tissues (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-08-21
    Description: When bound to cell surfaces, certain lectins such as concanavalin A induce a drop in the average diffusion coefficients (D) of a number of cell surface molecules. To find whether such anchorage modulation occurs naturally, D of surface antigens on different cell and tissue types were measured by fluorescence photobleaching recovery. Values for cells of the same tissue origin under different conditions of growth and association - in tissues, in small aggregates, and as isolated cells - varied by less than twofold when polyspecific monovalent antibodies to cell surface antigens were used, a range much less than the sixfold decrease in D observed after lectin-induced anchorage modulation. Thus, if reversible modulation of the diffusion rate is used naturally as a means of cell signaling, it must involve only a few kinds of surface receptors not detected by the antibodies used in this study. In certain tissues, however, a significant proportion of cells showed no apparent receptor mobility. This "all or none" modulation of lateral diffusion may reflect relatively long-lasting alterations in the states of a single cell type or differentiation among the cells of the particular tissue.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gall, W E -- Edelman, G M -- AI-09273/AI/NIAID NIH HHS/ -- AI-11378/AI/NIAID NIH HHS/ -- AM-04256/AM/NIADDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1981 Aug 21;213(4510):903-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7196087" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Surface/physiology ; Cell Adhesion ; Cell Division ; Cells, Cultured ; Chick Embryo ; Cytoskeleton/physiology ; Diffusion ; *Membrane Fluidity ; Mice
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  • 33
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    Phase locking, period-doubling bifurcations, and irregular dynamics in periodically stimulated cardiac cells (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-12-18
    Description: The spontaneous rhythmic activity of aggregates of embryonic chick heart cells was perturbed by the injection of single current pulses and periodic trains of current pulses. The regular and irregular dynamics produced by periodic stimulation were predicted theoretically from a mathematical analysis of the response to single pulses. Period-doubling bifurcations, in which the period of a regular oscillation doubles, were predicted theoretically and observed experimentally.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guevara, M R -- Glass, L -- Shrier, A -- New York, N.Y. -- Science. 1981 Dec 18;214(4527):1350-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7313693" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Chick Embryo ; Electric Stimulation ; Heart/*physiology ; In Vitro Techniques ; Membrane Potentials ; Models, Biological ; *Myocardial Contraction ; Periodicity
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    Epidermal growth factors enhances viral transformation of granulosa cells (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-07-10
    Description: Kirsten sarcoma virus produced a low incidence of transient morphological transformation in primary cultures of rat ovarian granulosa cells. In the presence of epidermal growth factor, the incidence of transient transformation increased severalfold and two continuous cell lines were established. Epidermal growth factor, a naturally occurring polypeptide hormone, appears to act here as a tumor promoter in the retrovirus-induced transformation of a mesodermally derived epithelium.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harrison, J -- Auersperg, N -- New York, N.Y. -- Science. 1981 Jul 10;213(4504):218-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6264597" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Transformation, Viral/*drug effects ; Cells, Cultured ; Epidermal Growth Factor/*pharmacology ; Female ; Granulosa Cells/*cytology/drug effects ; Kirsten murine sarcoma virus/drug effects/*genetics ; Peptides/*pharmacology ; Rats ; Sarcoma Viruses, Murine/*genetics
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    Somatomedin B: mitogenic activity derived from contaminant epidermal growth factor (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-09-04
    Description: The mitogenic effect of somatomedin B on human cultured glial cells was neutralized by the addition of antibodies to mouse epidermal growth factor. Somatomedin B contained epidermal growth factor--like activity, competing for binding to the epidermal growth factor receptor. It is concluded that contaminating epidermal growth factor may explain the entire mitogenic activity of somatomedin B.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Heldin, C H -- Wasteson, A -- Fryklund, L -- Westermark, B -- New York, N.Y. -- Science. 1981 Sep 4;213(4512):1122-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6973821" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Division/drug effects ; Cells, Cultured ; Epidermal Growth Factor/*pharmacology ; Growth Substances/*pharmacology ; Humans ; Neuroglia ; Peptides/*pharmacology ; Somatomedins/*pharmacology ; Structure-Activity Relationship
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    Calcium spike electrogenesis and other electrical activity in continuously cultured small cell carcinoma of the lung (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-06-05
    Description: Spike electrogenesis, local depolarizing and hyperpolarizing responses, spontaneous rhythmic firing, and alternating resting potentials were measured in cells from a continuously cultured small cell carcinoma of the lung. Spike generation was blocked by MnCl2. In view of this evidence for calcium-spike electrogenesis and previous evidence of secretory activity in these cells, this cell line (DMS 53) can provide a model for the study of excitation-secretion behavior in human neoplastic cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McCann, F V -- Pettengill, O S -- Cole, J J -- Russell, J A -- Sorenson, G D -- CA 25845/CA/NCI NIH HHS/ -- DA 23108/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1981 Jun 5;212(4499):1155-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6262914" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials/drug effects ; Calcium/pharmacology ; Carcinoma, Small Cell/*physiopathology ; Cells, Cultured ; Electric Conductivity ; Humans ; Lung Neoplasms/*physiopathology ; Manganese/pharmacology ; Membrane Potentials/drug effects
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    Fc and C3b receptors on pulmonary endothelial cells: induction by injury (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-10-30
    Description: Receptors for the activated third component of complement and for the Fc portion of immunoglobulin G are not expressed by apparently normal bovine pulmonary endothelial cells, but are expressed when the cells are exposed to white cell lysates or are infected with influenza or cytomegalovirus. The unmasking of these latent receptors may contribute to the pulmonary inflammatory response characteristic of, for example, anaphylaxis and to those lung diseases characterized by the deposition of immune complexes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ryan, U S -- Schultz, D R -- Ruan, J W -- HL 21568/HL/NHLBI NIH HHS/ -- HL 22087/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1981 Oct 30;214(4520):557-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6270789" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cattle ; Cells, Cultured ; Complement C3b/metabolism ; Cytomegalovirus Infections/physiopathology ; Endothelium/metabolism ; Orthomyxoviridae Infections/physiopathology ; Pulmonary Artery/*cytology ; Receptors, Complement/*metabolism ; Receptors, Fc/*metabolism
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    Glucose stimulation of the antilipolytic effect of insulin in humans (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-06-03
    Description: Dose-response studies of the inhibition of lipolysis by insulin in isolated human adipocytes were conducted with the use of a sensitive bioluminescent assay of glycerol release. The addition of glucose to the incubation medium was associated with an increase in insulin sensitivity and an increase in the maximum insulin effect. The results suggest that glucose plays an important role in regulating the antilipolytic action of insulin in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arner, P -- Bolinder, J -- Ostman, J -- New York, N.Y. -- Science. 1983 Jun 3;220(4601):1057-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6342138" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue/cytology ; Cells, Cultured ; Dose-Response Relationship, Drug ; Drug Synergism ; Glucose/*pharmacology ; Humans ; Insulin/*pharmacology ; Isoproterenol/pharmacology ; Lipolysis/*drug effects
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    Fluoride directly stimulates proliferation and alkaline phosphatase activity of bone-forming cells (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-10-21
    Description: Fluoride is one of the most potent but least well understood stimulators of bone formation in vivo. Bone formation was shown to arise from direct effects on bone cells. Treatment with sodium fluoride increased proliferation and alkaline phosphatase activity of bone cells in vitro and increased bone formation in embryonic calvaria at concentrations that stimulate bone formation in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Farley, J R -- Wergedal, J E -- Baylink, D J -- AM31061/AM/NIADDK NIH HHS/ -- AM31062/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1983 Oct 21;222(4621):330-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6623079" target="_blank"〉PubMed〈/a〉
    Keywords: Alkaline Phosphatase/*metabolism ; Animals ; Bone Development/*drug effects ; Bone and Bones/*cytology/embryology/enzymology ; Cell Division/drug effects ; Cells, Cultured ; Chick Embryo ; Dose-Response Relationship, Drug ; Fluorides/*pharmacology ; Parathyroid Hormone/pharmacology
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    Cell growth on liquid microcarriers (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-03-25
    Description: Anchorage-dependent cell growth is demonstrated on microcarriers of fluorocarbon fluid formed by emulsification and stabilized with polylysine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keese, C R -- Giaever, I -- New York, N.Y. -- Science. 1983 Mar 25;219(4591):1448-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828872" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Adhesion ; Cell Division ; *Cell Physiological Phenomena ; Cells, Cultured ; Culture Media ; Emulsions ; Fluorocarbons ; Kinetics
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    Substance P and somatostatin regulate sympathetic noradrenergic function (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-09-09
    Description: Peptidergic-noradrenergic interactions were examined in explants of rat sympathetic superior cervical ganglia and in cultures of dissociated cells. The putative peptide transmitters substance P and somatostatin each increased the activity of the catecholamine-synthesizing enzyme tyrosine hydroxylase after 1 week of exposure in culture. Maximal increases occurred at 10(-7) molar for each peptide, and either increasing or decreasing the concentration reduced the effects. Similar increases in tyrosine hydroxylase were produced by a metabolically stable agonist of substance P, while a substance P antagonist prevented the effects of the agonist. The data suggest that the increased tyrosine hydroxylase activity was mediated by peptide interaction with specific substance P receptors and that peptides may modulate sympathetic catecholaminergic function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kessler, J A -- Adler, J E -- Black, I B -- New York, N.Y. -- Science. 1983 Sep 9;221(4615):1059-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6192502" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacitracin/pharmacology ; Captopril/pharmacology ; Cells, Cultured ; Culture Techniques ; Dose-Response Relationship, Drug ; Ganglia, Sympathetic/*enzymology ; Rats ; Somatostatin/*pharmacology ; Substance P/*pharmacology ; Tyrosine 3-Monooxygenase/*metabolism
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    Action potentials in macrophages derived from human monocytes (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-02-25
    Description: The electrical activity of macrophages derived from human blood monocytes was recorded in vitro with intracellular microelectrodes and was analyzed with computer-assisted data acquisition and analysis techniques. In cells impaled 6 to 8 days after the cultures were prepared, the resting potentials reached a maximum value of -72 millivolts. The cells were electrically excitable; spikes exhibited a slow upstroke, a fast downstroke, a discrete threshold, a large overshoot, and a brief undershoot. Repetitive firing was induced by a maintained depolarizing current. A positive relation was observed between transmembrane currents and resting potential. Voltage-current relations were nonrectifying for subthreshold current injections. Since these cells had not been treated with any specific activation factors, the electrical activity recorded is evidence for the presence of voltage-dependent inward and outward currents in the membranes of mature macrophages. The electrical signals generated by these cells may be useful for the assay of sensor and effector functions of macrophages, such as chemotaxis, receptor-ligand interactions, and phagocytosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McCann, F V -- Cole, J J -- Guyre, P M -- Russell, J A -- AM0535/AM/NIADDK NIH HHS/ -- BRSG05392/RS/DRS NIH HHS/ -- CA17323/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Feb 25;219(4587):991-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6823563" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Cell Differentiation ; Cells, Cultured ; Humans ; Macrophages/*physiology ; Monocytes/cytology
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    Somatomedin-C mediates growth hormone negative feedback by effects on both the hypothalamus and the pituitary (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-06-12
    Description: Somatomedin-C stimulates somatostatin release to a maximum of 390 percent of basal release during short-term (20-minute) incubation of rat hypothalamus. It has no effect on basal or stimulated growth hormone release from primary cultures of rat adenohypophyseal cells during a 4-hour incubation, but inhibits stimulated release by more that 90 percent after 24 hours. These findings suggest that somatomedin-C participates in the growth hormone negative feedback loop with an immediate effect on hypothalamic somatostatin and a delayed effect on the anterior pituitary.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berelowitz, M -- Szabo, M -- Frohman, L A -- Firestone, S -- Chu, L -- Hintz, R L -- AM 18722/AM/NIADDK NIH HHS/ -- AM 24085/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Jun 12;212(4500):1279-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6262917" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bucladesine/pharmacology ; Cells, Cultured ; Dose-Response Relationship, Drug ; Feedback ; Growth Hormone/pharmacology/*secretion ; Hypothalamus/drug effects/*physiology ; Insulin-Like Growth Factor I ; Kinetics ; Pituitary Gland, Anterior/drug effects/*secretion ; Rats ; Somatomedins/*pharmacology
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    Regeneration of neurites on long-term cultures of sympathetic neurons deprived of nerve growth factor (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-10-30
    Description: Sympathetic neurons from newborn rats, cultured for 1 month or longer in the virtual absence of nonneuronal cells, were capable of regenerating neurites after neuritotomy. Regeneration occurred even after nerve growth factor was withdrawn from the cultures, although it was much less extensive and appeared limited to a few days following neuritotomy. Even after 29 days of nerve growth factor deprivation, reintroduction of the protein prompted a resumption of neurite growth. Possible roles of both nerve growth factor-independent and -dependent components in adult nerve regeneration are discussed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Campenot, R B -- NS15559/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Oct 30;214(4520):579-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7292000" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation/drug effects ; Cells, Cultured ; Ganglia, Sympathetic/*cytology ; Nerve Growth Factors/*pharmacology ; Nerve Regeneration/*drug effects ; Neurons/*cytology ; Rats ; Time Factors
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    DNA synthesis in cultured adult cardiocytes (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-10-30
    Description: Trypsin-dissociated atrial cardiocytes from adult rats were exposed to [3H]thymidine for sequential 24-hour periods from day 2 to day 12 of culture. On day 3 and each day thereafter, cells were prepared for ultrastructural radioautography and examined with an electron microscope. Maximal incorporation occurred on day 5, when 63 percent of the cardiocytes were labeled. Mitotic activity was never present in more than 0.5 percent of the cardiocytes examined. Incorporation of [3H]thymidine and mitosis occurred only in immature cardiocytes characterized by subsarcolemmal primary filaments and Z bands with or without specific granules; more mature cardiocytes were never labeled.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cantin, M -- Ballak, M -- Beuzeron-Mangina, J -- Anand-Srivastava, M B -- Tautu, C -- New York, N.Y. -- Science. 1981 Oct 30;214(4520):569-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7291996" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoradiography ; Cell Division ; Cells, Cultured ; DNA/*biosynthesis ; Female ; Mitosis ; Myocardium/*cytology ; Rats ; Rats, Inbred Strains ; Time Factors
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  • 46
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    Growth arrest and morphological change of human breast cancer cells by dibutyryl cyclic AMP and L-arginine (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-10-02
    Description: The growth in vitro of human breast cancer cells, line MCF-7, was inhibited by a daily supplement of L-arginine (1 milligram per milliliter). Arginine acted synergistically with dibutyryl adenosine 3',5'-monophosphate (cyclic AMP) (10(-6) molar) to enhance the growth inhibitory effect: the cell replication ceased completely within 2 days after treatment. The growth arrest accompanied a change in cell morphology and was preceded by increases in the cellular concentration of cyclic AMP, adenylate cyclase, and type II cyclic AMP-dependent protein kinase activities as well as a decrease of estrogen binding activity. The results suggest that growth of human breast cancer cells is subject to cyclic AMP-mediated regulation and that arginine may play a specific role in this process.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cho-Chung, Y S -- Clair, T -- Bodwin, J S -- Berghoffer, B -- New York, N.Y. -- Science. 1981 Oct 2;214(4516):77-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6269181" target="_blank"〉PubMed〈/a〉
    Keywords: Arginine/*pharmacology ; Breast Neoplasms/metabolism/*pathology ; Bucladesine/*pharmacology ; Cell Division/*drug effects ; Cell Survival/drug effects ; Cells, Cultured ; Cyclic AMP/metabolism ; Drug Synergism ; Female ; *Growth Inhibitors ; Humans
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    Interferon-resistant cell line lacks fatty acid cyclooxygenase activity (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-04-17
    Description: A clone of L1210 mouse leukemia cells selected for resistance to both the antiviral and anticellular properties of mouse interferon were essentially devoid of fatty acid cyclooxygenase activity. Experiments in which broken cell preparations were mixed or the two cell types were cultivated together failed to indicate the presence of a diffusible enzyme inhibitor. Fatty acid lipoxygenase activity of similar magnitude was detectable in both cell types. A selective impairment of fatty acid cyclooxygenase in interferon-resistant cells is consistent with recently described data suggesting that this enzyme may play a crucial role in mediating the antiviral and anticellular effects of interferon.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chandrabose, K A -- Cuatrecasas, P -- Pottathil, R -- Lang, D J -- New York, N.Y. -- Science. 1981 Apr 17;212(4492):329-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6163214" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arachidonic Acids/metabolism ; Cells, Cultured ; Clone Cells/drug effects/enzymology ; Cyclooxygenase Inhibitors ; Interferons/*pharmacology ; Leukemia L1210 ; Lipoxygenase/metabolism ; Lipoxygenase Inhibitors ; Mice ; Prostaglandin-Endoperoxide Synthases/*deficiency ; Prostaglandins/biosynthesis
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    Elastin fragments attract macrophage precursors to diseased sites in pulmonary emphysema (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-22
    Description: This study suggests one mechanism by which alveolar macrophages accumulate in the lung in pulmonary emphysema: elastin fragments generated at the diseased sites are potent chemoattractants for monocytes, the precursors of the macrophages. The most chemotactic elastin fragments have a molecular weight between 10,000 and 50,000 and are active at concentrations as low as 3 nanograms per milliliter. By comparison, elastin fragments with higher molecular weights and desmosines are active at concentrations greater than 0.3 microgram per milliliter. In addition, preincubation of monocytes with the 10,000- to 50,000-dalton elastin impairs the ability of the cells to migrate toward elastin fragments but not toward activated serum. Fragments of tropoelastin are not chemotactic for monocytes. Because elastin, but not tropoelastin, contains lysyl-derived cross-links, these structures may be the active chemotactic site on the elastin fragments.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hunninghake, G W -- Davidson, J M -- Rennard, S -- Szapiel, S -- Gadek, J E -- Crystal, R G -- New York, N.Y. -- Science. 1981 May 22;212(4497):925-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233186" target="_blank"〉PubMed〈/a〉
    Keywords: Cells, Cultured ; Chemotaxis, Leukocyte/*drug effects ; Dose-Response Relationship, Drug ; Elastin/*analogs & derivatives/*pharmacology ; Humans ; Macrophages/physiology ; Monocytes/*physiology ; Peptide Fragments/pharmacology ; Pulmonary Emphysema/*physiopathology ; Structure-Activity Relationship ; Tropoelastin/*pharmacology
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    Binding and mobility of the cell surface receptors for 3,3',5-triiodo-L-thyronine (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-01-02
    Description: A fluorescent derivative of the thyroid hormone 3,3'-triiodo-L-thyronine binds to cultured mouse fibroblasts; such binding is saturable. Video intensification fluorescence microscopy indicates that binding occurs at the plasma membrane. Diffusion coefficients, obtained by fluorescence photobleaching recovery, are consistent with binding to a protein receptor on the cell surface.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maxfield, F R -- Willingham, M C -- Pastan, I -- Dragsten, P -- Cheng, S Y -- New York, N.Y. -- Science. 1981 Jan 2;211(4477):63-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6255563" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carrier Proteins/*metabolism ; Cells, Cultured ; Cytoplasmic Granules/metabolism ; Diffusion ; Endocytosis ; Kinetics ; Membrane Fluidity ; Membrane Proteins/metabolism ; Mice ; Microscopy, Fluorescence ; Receptors, Cell Surface/*metabolism ; Receptors, Thyroid Hormone ; Triiodothyronine/*metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    The posterior pituitary: regulation of anterior pituitary prolactin secretion (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-08-07
    Description: Removal of the posterior pituitary from anesthetized male rats results in a prompt and significant increase in circulating prolactin that is reversed by the injection of dopamine. Posterior pituitary extracts, which contain high concentrations of endogenous dopamine, inhibit prolactin secretion from isolated anterior pituitary cells. This inhibition is prevented by incubation of the cells with the dopamine receptor antagonist (+)-butaclamol. The data show that posterior pituitary dopamine reaches the anterior pituitary via the short hypophysial portal vessels and participates in the regulation of prolactin secretion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peters, L L -- Hoefer, M T -- Ben-Jonathan, N -- HD 14348/HD/NICHD NIH HHS/ -- NS-13234/NS/NINDS NIH HHS/ -- NS-219/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Aug 7;213(4508):659-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7256264" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Dopamine/pharmacology/*physiology ; Luteinizing Hormone/secretion ; Male ; Pituitary Gland, Posterior/*physiology ; Prolactin/*secretion ; Rats ; Secretory Rate/drug effects
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    Compartmentalization of cyclic AMP during phagocytosis by human neutrophilic granulocytes (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-01-23
    Description: Immunocytochemistry shows that early during phagocytosis of zymosan, adenosine 3',5'-monophosphate (cyclic AMP) appears on the cell surface before the phagosome is internalized. The appearance of cyclic AMP on the cell surface is coincident with that of granule products and regulatory subunit of type I cyclic AMP-dependent protein kinase. Guanosine 3',5'-monophosphate is not associated with the initiation site of phagocytosis, but is observed throughout the granular cytoplasmic region. This sharply localized accumulation of cyclic AMP may serve as a signal for the initiation of phagocytosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pryzwansky, K B -- Steiner, A L -- Spitznagel, J K -- Kapoor, C L -- 02430-22/PHS HHS/ -- AM17438/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Jan 23;211(4480):407-10.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6261328" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Compartmentation ; Cells, Cultured ; Cyclic AMP/*metabolism ; Cyclic GMP/metabolism ; Cytoplasmic Granules/metabolism ; Humans ; Lactoferrin/metabolism ; Macromolecular Substances ; Neutrophils/*physiology/ultrastructure ; Peroxidase/metabolism ; *Phagocytosis ; Protein Kinases/metabolism
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    Lectins mimic insulin in the induction of tyrosine aminotransferase (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-11-13
    Description: Various lectins were found to induce tyrosine aminotransferase in H-35 rat hepatoma cells grown in monolayer culture. Wheat germ agglutinin gave a maximal induction of tyrosine aminotransferase 6 hours after its addition. The induction time course was similar to that elicited by insulin. Fourteen micrograms of wheat germ agglutinin per milliliter gave half-maximal enzyme induction and 50 micrograms per milliliter gave the maximal response. The induction of tyrosine aminotransferase by wheat germ agglutinin was additive with the induction by either dexamethasone or dibutyryl adenosine 3',5'-monophosphate, but was not additive with the tyrosine amino transferase induction by insulin. Wheat germ agglutinin also mimicked insulin in the inhibition of cellular protein degradation in the absence of serum. The insulin-like effects of lectins should be considered in lectin-mediated manipulations such as agglutination.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, J D -- Liu, A Y -- AM20274/AM/NIADDK NIH HHS/ -- GM 07258/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1981 Nov 13;214(4522):799-800.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6117128" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bucladesine/pharmacology ; Cells, Cultured ; Dexamethasone/pharmacology ; Enzyme Induction/drug effects ; Insulin/*pharmacology ; Lectins/*pharmacology ; Liver/*enzymology ; Liver Neoplasms, Experimental/enzymology ; Peptide Hydrolases/metabolism ; Rats ; Receptor, Insulin/drug effects ; Tyrosine Transaminase/*biosynthesis
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    Cooperation between oncogenes. Investigators focus on cooperation between two or more oncogenes to help explain the multistep development of human cancers (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-11-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1983 Nov 11;222(4624):602-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6635658" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Cycle ; Cells, Cultured ; Mice ; *Oncogenes ; Platelet-Derived Growth Factor/*genetics
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  • 54
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    RNA splice site selection: evidence for a 5' leads to 3' scanning model (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-06-24
    Description: Human G gamma-globin genes containing tandem duplications of the donor (5') or acceptor (3') RNA splice sites of the second intervening sequence were constructed in order to ascertain the directionality of RNA splice site selection. These genes were introduced into cultured monkey cells, and their transcripts were analyzed. Transcripts of these duplication variants were spliced only at the proximal copy of the duplicated splice sites. These data are consistent with a 5' leads to 3' model of splice site selection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lang, K M -- Spritz, R A -- AM28598/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1983 Jun 24;220(4604):1351-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6304877" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cells, Cultured ; Globins/genetics ; Haplorhini ; Humans ; Plasmids ; *RNA Splicing ; RNA, Messenger/genetics/physiology ; Simian virus 40/genetics ; Transcription, Genetic
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  • 55
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    Vasoactive intestinal peptide alters membrane potential and cyclic nucleotide levels in retinal horizontal cells (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-09-09
    Description: Vasoactive intestinal peptide stimulated the synthesis of adenosine 3',5'-monophosphate in fractions of isolated carp horizontal cells. When applied extracellularly to isolated and cultured horizontal cells, the peptide also induced a slow depolarization (30 to 40 millivolts) accompanied by a decrease in membrane resistance. However, analogs of adenosine 3',5'-monophosphate applied extracellularly or intracellularly, and forscolin applied extracellularly, had no effect on the membrane potential of cultured horizontal cells, indicating that the induced depolarization was not related to the accumulation of adenosine 3',5'-monophosphate in these cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lasater, E M -- Watling, K J -- Dowling, J E -- EY-00811/EY/NEI NIH HHS/ -- EY-00824/EY/NEI NIH HHS/ -- EY-05476/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1983 Sep 9;221(4615):1070-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6308770" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carps ; Cells, Cultured ; Cyclic AMP/*metabolism ; Dopamine/pharmacology ; Gastrointestinal Hormones/*pharmacology ; Kainic Acid/pharmacology ; Membrane Potentials/*drug effects ; Retina/*drug effects/physiology ; Vasoactive Intestinal Peptide/*pharmacology
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    Evidence for the recessive nature of cellular immortality (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-09-02
    Description: Fusion of immortal cell lines with normal human fibroblasts or certain other immortal cell lines yields hybrids having limited division potential. Cellular immortality was found to be a recessive phenotype in hybrids. It was also found that at least two separate events in the normal cell genome can result in immortality. In fusions involving certain immortal parent cells, these events can be complemented to result in hybrids with finite division capacity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pereira-Smith, O M -- Smith, J R -- AG 03262/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 1983 Sep 2;221(4614):964-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879195" target="_blank"〉PubMed〈/a〉
    Keywords: *Cell Division ; Cell Line ; *Cell Survival ; Cells, Cultured ; Genes, Recessive ; Humans ; Hybrid Cells/*physiology ; Phenotype
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    Activation of 2-aminofluorene by cultured plant cells (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-03-25
    Description: Cultured tobacco plant cells activated 2-aminofluorene to an agent mutagenic to Salmonella typhimurium strain TA98. The plant activation of 2-aminofluorene is heat-inactivated and may not involve solely cytochrome P-450. The kinetics of activation demonstrated both time- and concentration-dependent responses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Plewa, M J -- Weaver, D L -- Blair, L C -- Gentile, J M -- ES02384/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1983 Mar 25;219(4591):1427-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6338591" target="_blank"〉PubMed〈/a〉
    Keywords: Biotransformation ; Cells, Cultured ; Fluorenes/*metabolism/pharmacology ; Kinetics ; Mutagenicity Tests ; Mutagens/*metabolism ; *Mutation ; *Plants, Toxic ; Salmonella typhimurium/drug effects ; Tobacco/*metabolism
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    Isolation and transmission of human retrovirus (human t-cell leukemia virus) (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-02-18
    Description: Nine new isolates of human T-cell leukemia-lymphoma virus (HTLV) were obtained from cells of seven patients with malignancies of mature T cells and from two clinically normal relatives of a T-cell leukemia patient. These people were from the United States, Israel, the West Indies, and Japan. The virus was detected in the fresh T cells and was isolated from the established T-cell lines. Each isolate is closely related to the first HTLV isolate, and all the new HTLV isolates were transmitted into normal human T cells obtained from the umbilical cord blood of newborns.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Popovic, M -- Sarin, P S -- Robert-Gurroff, M -- Kalyanaraman, V S -- Mann, D -- Minowada, J -- Gallo, R C -- New York, N.Y. -- Science. 1983 Feb 18;219(4586):856-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6600519" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line ; Cells, Cultured ; Female ; Humans ; Leukemia/*microbiology ; Male ; Retroviridae/growth & development/*isolation & purification ; T-Lymphocytes/*microbiology
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    Mobilization of cellular calcium-45 and lead-210: effect of physiological stimuli (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-04-15
    Description: Isolated rat hepatocytes in primary culture were used as a model system to evaluate the effects of selected hormones and culture conditions on the efflux of calcium-45 and lead-210 from cells labeled with these isotopes. Alpha-adrenergic stimuli, angiotensin, vasopressin, dibutyryl adenosine 3',5'-monophosphate, and reduced phosphate concentrations in the medium increased the efflux of calcium-45 and lead-210. Glucagon and insulin had no effect, but increased phosphate concentrations decreased the efflux of both isotopes. Experiments with hepatocytes cultured in a medium free of calcium and lead demonstrated that the increased efflux of calcium-45 and lead-210 induced by hormones was the result of mobilization of the ions from intracellular stores. The data indicate that the physiological stimuli that mobilized calcium ions also mobilized lead ions, and that the mobilized lead would be available to interact with calcium-mediated cell functions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pounds, J G -- Mittelstaedt, R A -- New York, N.Y. -- Science. 1983 Apr 15;220(4594):308-10.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6301003" target="_blank"〉PubMed〈/a〉
    Keywords: Angiotensin II/pharmacology ; Animals ; Bucladesine/pharmacology ; Calcium Radioisotopes/*metabolism ; Cells, Cultured ; Epinephrine/pharmacology ; Insulin/pharmacology ; Lead/*metabolism ; Liver/cytology ; Phosphates/pharmacology ; Propranolol/pharmacology ; Radioisotopes ; Rats ; Vasopressins/pharmacology
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    Irreversible ligands with high selectivity toward delta and mu opiate receptors (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-04-15
    Description: Alkylating agents that display strong selectivity for opiate receptor types delta or mu were prepared by appropriate modification of the structures of the strong analgesics fentanyl, etonitazene, and endoethenotetrahydrooripavine. The availability of these substances should facilitate studies of the structural basis of receptor specificity and of the physiologic roles of these receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rice, K C -- Jacobson, A E -- Burke, T R Jr -- Bajwa, B S -- Streaty, R A -- Klee, W A -- New York, N.Y. -- Science. 1983 Apr 15;220(4594):314-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6132444" target="_blank"〉PubMed〈/a〉
    Keywords: Alkylation ; Animals ; Benzimidazoles/analogs & derivatives/metabolism ; Brain/physiology ; Cells, Cultured ; Chemical Phenomena ; Chemistry ; Enkephalin, Methionine/analogs & derivatives/metabolism ; Fentanyl/analogs & derivatives/metabolism ; *Isothiocyanates ; Ligands ; Rats ; Receptors, Opioid/*metabolism/physiology ; Thebaine/analogs & derivatives/pharmacology
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    Modulation of the metastatic capability in B16 melanoma by cell shape (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-09-23
    Description: The lung colonization of B16-F1 cells grown in flat and spherical configurations was studied. Cells cultivated in vitro as spheroids on a nonadhesive substrate expressed in a reversible fashion a marked increase in their propensity to establish metastases. The altered metastatic capability was accompanied by a reversible reduction in the accessibility of cell surface proteins to external iodination and by a dramatic decrease in the synthesis of vimentin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Raz, A -- Ben-Ze'ev, A -- New York, N.Y. -- Science. 1983 Sep 23;221(4617):1307-10.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6612347" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Adhesion ; Cell Division ; Cells, Cultured ; Intermediate Filament Proteins/biosynthesis ; Lung Neoplasms/secondary ; Melanoma/*pathology ; Membrane Proteins/physiology ; Mice ; *Neoplasm Metastasis ; Neoplasm Proteins/physiology ; Neoplasms, Experimental/pathology ; Vimentin
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    Activation of the transforming potential of a normal cell sequence: a molecular model for oncogenesis (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-05-22
    Description: The molecularly cloned, long terminal repeat (LTR) of the Moloney sarcoma virus (M-MSV) provirus has been covalently linked to c-mos, the cellular homolog of the M-MSV-specific sequence, v-mos. These newly constructed clones lack any M-MSV-derived sequences other than the LTR, but in DNA transfection assays they transform cells as efficiently as cloned subgenomic M-MSV fragments containing both v-mos and LTR. Cells transformed by LTR:c-mos hybrid molecules contain additional copies of mos DNA, and several size classes of polyadenylated RNA's with sequence homology to mos. The activation of the transforming potential of c-mos by the proviral LTR suggests a model whereby LTR-like elements could activate other normal cell sequences with oncogenic potential.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Blair, D G -- Oskarsson, M -- Wood, T G -- McClements, W L -- Fischinger, P J -- Vande Woude, G G -- New York, N.Y. -- Science. 1981 May 22;212(4497):941-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233190" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Transformation, Viral ; Cells, Cultured ; DNA, Recombinant ; Defective Viruses/genetics ; Gene Expression Regulation ; *Genes, Viral ; Mice ; Moloney murine leukemia virus/*genetics ; Nucleic Acid Hybridization ; Operon ; Plasmids
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    Regulation of muscle differentiation: stimulation of myoblast fusion in vitro by catecholamines (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-12-18
    Description: Epinephrine and isoproterenol provoke primary chick myoblasts to initiate precocious cell fusion. Both the rise in intracellular adenosine 3' ,5-monophosphate (cyclic AMP) and cell fusion generated by these effectors are prevented by propranolol, which is a specific blocker of the beta-adrenergic receptor. Propranolol has no effect either on the precocious cell fusion provoked by prostaglandin E or on cell fusion in control cultures. The results support the idea that a rise in cyclic AMP is the critical intracellular change responsible for initiating events that culminate in myoblast differentiation 4 to 5 hours later. They also indicate that the culminate in myoblast differentiation 4 to 5 hours later. They also indicate that the hormone responsible for the positive regulation of myoblast differentiation in vitro is not acting through the beta-adrenergic receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Curtis, D H -- Zalin, R J -- New York, N.Y. -- Science. 1981 Dec 18;214(4527):1355-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6274017" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Catecholamines/*pharmacology ; Cell Differentiation/drug effects ; Cell Fusion/*drug effects ; Cells, Cultured ; Chick Embryo ; Cyclic AMP/metabolism ; Epinephrine/pharmacology ; Isoproterenol/pharmacology ; Muscles/*cytology ; Propranolol/pharmacology ; Prostaglandins E/pharmacology ; Receptors, Adrenergic, beta/drug effects ; Stimulation, Chemical
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    Tritiated thymidine incorporation does not measure DNA synthesis in ribavirin-treated human cells (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-01
    Description: When the incorporation of tritiated thymidine into acid insoluble material was measured, ribavirin appeared to be a potent inhibitor of DNA synthesis in KB cells and human lymphocytes. Inhibition was nearly 100-fold less, however, when DNA synthesis was measured by incorporation of phosphorus-32-labeled phosphate or by DNA fluorescence. The potent inhibition detected by incorporation of tritiated thymidine into DNA actually was the result of a potent effect on the labeling of deoxythymidine triphosphate, not on the synthesis of DNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Drach, J C -- Thomas, M A -- Barnett, J W -- Smith, S H -- Shipman, C Jr -- DE 02731/DE/NIDCR NIH HHS/ -- New York, N.Y. -- Science. 1981 May 1;212(4494):549-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209549" target="_blank"〉PubMed〈/a〉
    Keywords: Cells, Cultured ; DNA/*biosynthesis ; DNA Replication/*drug effects ; Humans ; Lymphocytes/metabolism ; Phosphates/metabolism ; Ribavirin/*pharmacology ; Ribonucleosides/*pharmacology ; Thymidine/*metabolism ; Thymine Nucleotides/biosynthesis
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    Optical recording of calcium action potentials from growth cones of cultured neurons with a laser microbeam (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-06-05
    Description: Simultaneous recordings of calcium action potentials directly from growth cones and from somata of neuroblastoma cells indicated that they could be generated in the neurites at or near growth cones. Growth cone responses were measured with a fluorescent voltage-sensitive dye and a 5-milliwatt helium-neon laser microbeam as a monitoring light source.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grinvald, A -- Farber, I C -- NS14716/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Jun 5;212(4499):1164-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233210" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials/drug effects ; Animals ; Calcium/*pharmacology ; Cells, Cultured ; Chickens ; Evoked Potentials/drug effects ; Kinetics ; Lasers ; Microscopy, Fluorescence ; Neurons/drug effects/*physiology
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    Suppression of immunity by stress: effect of a graded series of stressors on lymphocyte stimulation in the rat (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-09-18
    Description: In rats a graded series of stressors produced progressively greater suppression of lymphocyte function, as measured by the number of circulating lymphocytes and by phytohemagglutinin stimulation of lymphocytes in whole blood and isolated cultures. This evidence suggests that stress suppresses immunity in proportion to the intensity of the stressor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keller, S E -- Weiss, J M -- Schleifer, S J -- Miller, N E -- Stein, M -- New York, N.Y. -- Science. 1981 Sep 18;213(4514):1397-400.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6973822" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Electroshock ; *Immune Tolerance ; Leukocyte Count ; Lymphocyte Activation ; Phytohemagglutinins/pharmacology ; Rats ; Stress, Physiological/*immunology ; T-Lymphocytes/immunology
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    Gonadotropin-releasing hormone: regulation of adenosine 3',5'-monophosphate in ovarian granulosa cells (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-12-18
    Description: The antigonadal effects of gonadotropin-releasing hormone in ovarian granulosa cells are due to attenuation of the adenosine 3',5'-monophosphate (cyclic AMP) response to follicle-stimulating hormone. Agonists of gonadotropin-releasing hormone progressively inhibit adenylate cyclase and stimulate phosphodiesterase activities in cultured granulosa cells, indicating that blockade of gonadotropin action is attributable to the combined effects of decreased production and increased degradation of cyclic AMP.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Knecht, M -- Catt, K J -- 5 F32 HDO5801/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1981 Dec 18;214(4527):1346-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6274016" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Cyclic AMP/*metabolism ; Enzyme Activation/drug effects ; Female ; Follicle Stimulating Hormone/antagonists & inhibitors ; *Granulosa Cells/*drug effects/metabolism ; *Hypophysectomy ; Phosphodiesterase Inhibitors/*pharmacology ; Phosphoric Diester Hydrolases/*metabolism ; Pituitary Hormone-Releasing Hormones/*pharmacology ; Rats
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    Specific antigen in serum of patients with colon carcinoma (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-04-03
    Description: The binding of monoclonal antibody specific for colon carcinoma was inhibited by serum from patients with adenocarcinoma of the colon but not by serum from patients with other bowel diseases or from healthy volunteers. Of other malignancies studied, serum from two patients with gastric carcinoma and two patients with pancreatic carcinoma also inhibited the specific binding of monoclonal antibody. The levels of carcinoembryonic antigen in these serum samples were not correlated with their levels of binding inhibition. Such monoclonal antibodies may prove useful for the detection of colorectal carcinoma.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koprowski, H -- Herlyn, M -- Steplewski, Z -- Sears, H F -- CA-21124/CA/NCI NIH HHS/ -- RR-05540/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1981 Apr 3;212(4490):53-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6163212" target="_blank"〉PubMed〈/a〉
    Keywords: Adenocarcinoma/*immunology ; Adult ; Aged ; Antibodies, Neoplasm/immunology ; Antibody Specificity ; Antigens, Neoplasm/*analysis ; Binding, Competitive ; Carcinoembryonic Antigen/analysis ; Cells, Cultured ; Colonic Neoplasms/*immunology ; Epitopes ; Female ; Humans ; Intestinal Diseases/immunology ; Male ; Middle Aged ; Neoplasms/immunology
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    Increased pyrophosphate in fibroblasts and lymphoblasts from patients with hereditary diffuse articular chondrocalcinosis (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-11-13
    Description: The metabolic and genetic factors leading to deposition of calcium pyrophosphate crystals in cartilage of patients with chondrocalcinosis are not well understood. Analysis of cultured fibroblasts and lymphoblasts from 12 affected members of a large kindred showed a mean concentration of intracellular inorganic pyrophosphate two times greater than that in cells from unaffected family members or normal, unrelated volunteers. Increased intracellular pyrophosphate may, therefore, be a biochemical marker for the heterozygous expression of the chondrocalcinosis gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lust, G -- Faure, G -- Netter, P -- Seegmiller, J E -- AM13622/AM/NIADDK NIH HHS/ -- GM17702/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1981 Nov 13;214(4522):809-10.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6270793" target="_blank"〉PubMed〈/a〉
    Keywords: Cells, Cultured ; Chondrocalcinosis/genetics/*metabolism ; Diphosphates/*metabolism ; Fibroblasts/*metabolism ; Humans ; Lymphocytes/*metabolism
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    Cellular aging: further evidence for the commitment theory (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-09-25
    Description: A large, transient reduction in the population size of human fibroblasts in early passages significantly increases the variability of the life-spans of cultures in comparison to control cultures, as predicted by the commitment theory of cellular aging. The theory also predicts that a constant population of noncycling cells will appear in the later part of the culture life-span. This was confirmed by labeling the cells in culture with tritiated thymidine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holliday, R -- Huschtscha, L I -- Kirkwood, T B -- New York, N.Y. -- Science. 1981 Sep 25;213(4515):1505-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7280670" target="_blank"〉PubMed〈/a〉
    Keywords: *Cell Division ; *Cell Survival ; Cells, Cultured ; Fibroblasts/*physiology ; Humans ; Lung/cytology ; Probability
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    Choline stimulates nicotinic receptors on adrenal medullary chromaffin cells to induce catecholamine secretion (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-10-23
    Description: Choline stimulated secretion of catecholamines from primary dissociated cultures of bovine adrenal medullary chromaffin cells by interacting with nicotinic receptors. Secretion was readily detected at a choline concentration of 1 millimole per liter and was maximal at 3 to 10 millimoles per liter; it was completely calcium-dependent. Further analysis suggested that choline acts as a partial nicotinic agonist.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holz, R W -- Senter, R A -- 1 ROAM-27959-01/OA/SAMHSA HHS/ -- New York, N.Y. -- Science. 1981 Oct 23;214(4519):466-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7291988" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/antagonists & inhibitors ; Adrenal Medulla/*physiology ; Animals ; Catecholamines/*secretion ; Cattle ; Cells, Cultured ; Choline/*pharmacology ; Chromaffin System/*physiology ; Exocytosis/drug effects ; Receptors, Cholinergic/*drug effects ; Receptors, Nicotinic/*drug effects
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    Contractility of bile canaliculi: implications for liver function (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-05-29
    Description: Dynamic contractions of bile canaliculi were observed in groups of cultured hepatocytes by time-lapse cinephotomicrography during the early stages of monolayer formation. The contractions, which were forceful and appeared to have a pumping action, may facilitate the flow of bile in the liver's canalicular system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oshio, C -- Phillips, M J -- New York, N.Y. -- Science. 1981 May 29;212(4498):1041-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7015506" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bile/*physiology ; Cells, Cultured ; Cytoskeleton/*physiology/ultrastructure ; Liver/*physiology ; Male ; Microscopy, Phase-Contrast ; Rats
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    Journey to the center of the cell: role of the receptosome (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-10-30
    Description: Fibroblasts contain a specific internalization pathway that carries hormones as well as some proteins and viruses from the cell surface to the cell interior. Initially, the ligands bind to mobile receptors that are randomly distributed on the cell surface. Next the ligand-receptor complexes are trapped and concentrated in specialized regions of the membrane termed bristle-coated pits. From the pit a smooth-walled vesicle containing the ligand forms and carries the ligand to the cell interior. Because of its role in receptor-mediated endocytosis, this vesicle has been termed a "receptosome."〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pastan, I H -- Willingham, M C -- New York, N.Y. -- Science. 1981 Oct 30;214(4520):504-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6170111" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Compartmentation ; Cells, Cultured ; Clathrin ; Cytoplasm/physiology ; *Endocytosis ; Exocytosis ; Fibroblasts/*physiology ; Ligands ; Membrane Fluidity ; Membrane Proteins/metabolism ; Mice ; Microscopy, Fluorescence ; Receptors, Drug/*physiology ; alpha-Macroglobulins/metabolism ; gamma-Glutamyltransferase/metabolism
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    Ganglioside stimulation of axonal sprouting in vitro (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-10-30
    Description: Bovine brain gangliosides were applied to primary and established neuronal cultures to examine the role of gangliosides in neuronal development. Media containing gangliosides enhanced the degree of axonal elongation exhibited by sensory ganglia neurons and increased the length and number of Neuro-2a neuroblastoma cell processes. Ganglioside-supplemented media caused a twofold increase in ornithine decarboxylase activity in both culture systems. These experiments suggest that gangliosides function as acceptor molecules for growth-promoting substances in embryonic and tumor-derived neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roisen, F J -- Bartfeld, H -- Nagele, R -- Yorke, G -- NS 11299/NS/NINDS NIH HHS/ -- NS 11605/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Oct 30;214(4520):577-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7291999" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/physiology ; Cells, Cultured ; Chick Embryo ; Enzyme Induction/drug effects ; Ganglia, Spinal/embryology ; Gangliosides/*physiology ; Microscopy, Electron, Scanning ; Neurons/*cytology/ultrastructure ; Ornithine Decarboxylase/biosynthesis
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    Alcohol-dependent liver cell necrosis in vitro: a new model (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-04-17
    Description: In alcoholic liver injury, necrosis is involved in the progression from benign fatty liver to alcoholic hepatitis and cirrhosis. However, there is no practical model of alcohol-dependent liver cell necrosis. The calcium-dependent killing of cultured rat hepatocytes by two different membrane-active hepatotoxins, galactosamine and phalloidin, is potentiated by ethyl alcohol. This indicates that some general physical effect of alcohol on cellular membranes renders cells susceptible to otherwise nonlethal injuries. The in vitro model described in this report may thus be used to search for a general mechanism underlying alcohol-related tissue injury.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schanne, F A -- Zucker, A H -- Farber, J L -- Rubin, E -- AA 03442/AA/NIAAA NIH HHS/ -- AM 19154/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Apr 17;212(4492):338-40.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209533" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/pharmacology ; Cell Membrane/drug effects ; Cells, Cultured ; Drug Synergism ; Ethanol/pharmacology ; Female ; Galactosamine/pharmacology ; In Vitro Techniques ; Liver/drug effects ; Liver Diseases, Alcoholic/*pathology ; Necrosis ; Phalloidine/pharmacology ; Rats
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    Normalization by cell fusion of sister chromatid exchange in Bloom syndrome lymphocytes (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-15
    Description: Fusion of fresh lymphocytes from a Bloom syndrome (BS) patient with those of normal subjects or a BS heterozygote resulted in complete normalization of the frequency of sister chromatid exchanges in the chromosomes of BS cells. This normalization took place by the first mitosis in hybrid cells. In contrast, cultivation of BS lymphocytes with those of normal subjects or the BS heterozygote had no effect on sister chromatid exchanges. The cell fusion experiments suggest that the normalization on the sister chromatid exchanges. The cell fusion experiments suggest that the normalization of the sister chromatid exchange frequencies in BS cells can be achieved by factors conserved in the cells of various mammalian species. These findings are compatible with the concept that BS is a recessive genetic mutation at regulatory levels of the DNA repair function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shiraishi, Y -- Matsui, S -- Sandberg, A A -- CA-14555/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 May 15;212(4496):820-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7221565" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Fusion ; Cells, Cultured ; *Crossing Over, Genetic ; Humans ; Hybrid Cells/physiology ; Photosensitivity Disorders/*genetics ; *Sister Chromatid Exchange ; Syndrome ; Telangiectasis/*genetics
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    Toxic injury to isolated hepatocytes is not dependent on extracellular calcium (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-09-11
    Description: Freshly isolated hepatocytes from phenobarbital-treated rats were incubated in the presence or absence of extracellular calcium with three differently acting liver cell toxins, namely carbon tetrachloride, bromobenzene, and ethylmethanesulfonate. In the absence of extracellular calcium these three compounds were far more toxic to the cells than in its presence. This result is inconsistent with the hypothesis that an influx of extracellular calcium is required as the final step in toxic liver cell injury.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, M T -- Thor, H -- Orrenius, S -- New York, N.Y. -- Science. 1981 Sep 11;213(4513):1257-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7268433" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bromobenzenes/*toxicity ; Calcium/*metabolism ; Carbon Tetrachloride Poisoning/*physiopathology ; Cell Survival ; Cells, Cultured ; Ethyl Methanesulfonate/*toxicity ; Extracellular Space/metabolism ; Humans ; Liver/*drug effects/pathology ; Rats
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    Isolation of a T-lymphotropic retrovirus from a patient at risk for acquired immune deficiency syndrome (AIDS) (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-05-20
    Description: A retrovirus belonging to the family of recently discovered human T-cell leukemia viruses (HTLV), but clearly distinct from each previous isolate, has been isolated from a Caucasian patient with signs and symptoms that often precede the acquired immune deficiency syndrome (AIDS). This virus is a typical type-C RNA tumor virus, buds from the cell membrane, prefers magnesium for reverse transcriptase activity, and has an internal antigen (p25) similar to HTLV p24. Antibodies from serum of this patient react with proteins from viruses of the HTLV-I subgroup, but type-specific antisera to HTLV-I do not precipitate proteins of the new isolate. The virus from this patient has been transmitted into cord blood lymphocytes, and the virus produced by these cells is similar to the original isolate. From these studies it is concluded that this virus as well as the previous HTLV isolates belong to a general family of T-lymphotropic retroviruses that are horizontally transmitted in humans and may be involved in several pathological syndromes, including AIDS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barre-Sinoussi, F -- Chermann, J C -- Rey, F -- Nugeyre, M T -- Chamaret, S -- Gruest, J -- Dauguet, C -- Axler-Blin, C -- Vezinet-Brun, F -- Rouzioux, C -- Rozenbaum, W -- Montagnier, L -- New York, N.Y. -- Science. 1983 May 20;220(4599):868-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6189183" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*microbiology ; Adult ; Animals ; Antibodies, Viral/immunology ; Cells, Cultured ; Humans ; Male ; Microscopy, Electron ; RNA-Directed DNA Polymerase/metabolism ; Retroviridae/*isolation & purification ; T-Lymphocytes/microbiology ; Tumor Virus Infections/*microbiology
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    Myasthenic globulin enhances the loss of acetylcholine receptor clusters (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-01-14
    Description: Acetylcholine receptors are present in the sarcolemma of cultured skeletal muscle myotubes either as large clusters or in a diffuse distribution. Both the clustered and diffuse acetylcholine receptors are potentially removable from the membrane. Treatment of myotubes with globulin from patients with myasthenia gravis causes the loss of acetylcholine receptor clusters and the concomitant appearance of acetylcholine receptor microaggregates. The rate of acetylcholine receptor cluster loss is greater than the rate of acetylcholine receptor degradation, indicating that acetylcholine receptors are disrupted from clusters to form microaggregates before being removed from the plasma membrane.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bursztajn, S -- McManaman, J L -- Elias, S B -- Appel, S H -- New York, N.Y. -- Science. 1983 Jan 14;219(4581):195-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6849132" target="_blank"〉PubMed〈/a〉
    Keywords: *Autoantibodies ; Cells, Cultured ; Humans ; Immunologic Capping ; Macromolecular Substances ; Membrane Proteins/metabolism ; Myasthenia Gravis/*immunology ; Pinocytosis ; Receptors, Cholinergic/immunology/*metabolism
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    Sodium currents in segments of human heart cells (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-04-15
    Description: Isolated human heart cells were partially drawn into the lumen of a plastic tube and cleaved at the partitioning tube wall by intraluminal suction pulses. The extraluminal segment (10 to 20 percent of the cell length) was suitable for intracellular perfusion and voltage clamp. The time and voltage dependence of the sodium current, and the responses to changes in driving force and channel blockers, illustrate the potential of these preparations as models for the study of membrane channels.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bustamante, J O -- McDonald, T F -- New York, N.Y. -- Science. 1983 Apr 15;220(4594):320-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6301004" target="_blank"〉PubMed〈/a〉
    Keywords: Cells, Cultured ; Humans ; Ion Channels/drug effects ; Lidocaine/pharmacology ; Membrane Potentials/drug effects ; Myocardium/*cytology/metabolism ; Sodium/*metabolism/physiology ; Tetrodotoxin/pharmacology
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    Human brain tumor--derived cell lines: growth rate reduced by human fibroblast interferon (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-02-18
    Description: The biological response modifier human beta-interferon had pronounced antigrowth effects on various histologic types of human brain tumor cells but no effects on a nontransformed cell line, MRC-5. The cultures of brain tumor cells showed severe alterations indicative of cell injury and death after exposure to beta-interferon for 2 to 6 days. Similar results were obtained with cells freshly explanted from human brain tumors. The results indicate that it may be possible to use fresh, explanted tumor tissue to identify patients who might benefit from therapy with beta-interferon.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cook, A W -- Carter, W A -- Nidzgorski, F -- Akhtar, L -- New York, N.Y. -- Science. 1983 Feb 18;219(4586):881-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6401866" target="_blank"〉PubMed〈/a〉
    Keywords: Brain Neoplasms/pathology/*therapy ; Cell Division ; Cells, Cultured ; Humans ; Interferon-gamma/pharmacology/*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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  • 82
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    Cell-to-cell transfer of interferon-induced antiproliferative activity (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-09-02
    Description: Interferon-treated cells rapidly and efficiently transferred the antiproliferative activity of interferon to untreated cells. This phenomenon was not due to the carry-over of interferon by the interferon-treated cells. Thus, to evoke an antiproliferative state, interferon did not directly contact each cell in a population. The results suggest a novel mechanism by which interferon may indirectly regulate cell growth, and suggests that cells other than those of the immune system may play a role in controlling tumor growth in tissue where cell-to-cell contact occurs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lloyd, R E -- Blalock, J E -- Stanton, G J -- 03348/PHS HHS/ -- AM 30046/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1983 Sep 2;221(4614):953-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6192500" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Communication ; Cell Division/*drug effects ; Cells, Cultured ; Humans ; Interferons/*pharmacology ; Leukemia L1210 ; Mice ; Species Specificity
    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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  • 83
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    Serum factor supporting long-term survival of rat central neurons in culture (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-06-24
    Description: Gel filtration of serum at pH 3.6 yielded a fraction that supported long-term (months) survival of dissociated rat central neurons in monolayer culture more reliably than the traditionally used unfractionated serum. The cultures remained neuron-rich, because this fraction did not support the proliferation of glia and fibroblasts that occurs in whole serum. With an apparent molecular weight of 55,000 and an isoelectric point of 5.6, the active factor (or factors) in this fraction is distinct from any well-defined growth factor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaufman, L M -- Barrett, J N -- NS07044/NS/NINDS NIH HHS/ -- NS12207/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jun 24;220(4604):1394-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857258" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cattle ; *Cell Survival/drug effects ; Cells, Cultured ; Chromatography, Gel ; Horses ; Isoelectric Focusing ; Molecular Weight ; Nerve Growth Factors/isolation & purification/*pharmacology ; Neurons/drug effects/*physiology ; Rats ; Rats, Inbred Strains ; Spinal Cord/cytology
    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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  • 84
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    Normal cells of patients with high cancer risk syndromes lack transforming activity in the NIH/3T3 transfection assay (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-10-14
    Description: Oncogenes capable of transforming NIH/3T3 cells are often present in human tumors and tumor cell lines. Such oncogenes were not detected in normal fibroblast lines derived from patients with several clinical syndromes associated with greatly increased cancer risk. Thus, germ-line transmission of these oncogenes does not appear to be the predisposing factor responsible for these high cancer risk syndromes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Needleman, S W -- Yuasa, Y -- Srivastava, S -- Aaronson, S A -- New York, N.Y. -- Science. 1983 Oct 14;222(4620):173-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6623066" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Transformation, Neoplastic/*pathology ; Cells, Cultured ; DNA, Neoplasm/*genetics ; Gardner Syndrome/genetics ; Humans ; Mice ; *Oncogenes ; Precancerous Conditions/*genetics ; Risk ; Skin/pathology
    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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  • 85
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    Modulation of synapse formation by cyclic adenosine monophosphate (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-11-18
    Description: Synapses between neuroblastoma-hybrid cells and myotubes exhibit a high degree of plasticity. Increase of cyclic adenosine monophosphate (AMP) levels of the hybrid cells for several days results in the appearance of functional voltage-sensitive Ca2+ channels, which are required for evoked secretion of acetylcholine. The results show that cyclic AMP regulates synaptogenesis by regulating the expression of voltage-sensitive Ca2+ channels, and suggest that cyclic AMP affects posttranslational modifications of some glycoproteins and cellular levels of certain proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nirenberg, M -- Wilson, S -- Higashida, H -- Rotter, A -- Krueger, K -- Busis, N -- Ray, R -- Kenimer, J G -- Adler, M -- New York, N.Y. -- Science. 1983 Nov 18;222(4625):794-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6314503" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; Calcium/physiology ; Cell Adhesion ; Cells, Cultured ; Cyclic AMP/*physiology ; Gene Expression Regulation ; Humans ; Membrane Potentials ; Nerve Tissue Proteins/physiology ; Neuromuscular Junction/*physiology ; Neuronal Plasticity ; Receptors, Cell Surface/physiology ; Retina/*physiology ; Synapses/*physiology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 86
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    Tumor suppression with a combination of alpha-difluoromethyl ornithine and interferon (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-02-18
    Description: alpha-Difluoromethyl ornithine and mouse type 1 interferon, when administered simultaneously, were highly toxic to B16 melanoma cells in culture. Oral administration of alpha-difluoromethyl ornithine suppressed B16 melanoma development in mice 85 percent whereas interferon given subcutaneously inhibited tumor growth only 24 percent. Total or near total suppression of tumor growth was observed in mice receiving both treatments.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sunkara, P S -- Prakash, N J -- Mayer, G D -- Sjoerdsma, A -- New York, N.Y. -- Science. 1983 Feb 18;219(4586):851-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6186025" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Eflornithine ; Interferons/*administration & dosage ; Melanoma/therapy ; Mice ; Neoplasms, Experimental/*therapy ; Ornithine/administration & dosage/*analogs & derivatives ; Ornithine Decarboxylase Inhibitors
    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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  • 87
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    Immunocytochemically identified vasopressin neurons in culture show slow, calcium-dependent electrical responses (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-09-09
    Description: From morphological characterization and intracellular recordings, monolayer cultures derived from fetal mouse hypothalami were found to include functionally differentiated peptide neurons, a number of which appear to contain vasopressin. These cells exhibited particular patterns of slow, calcium-dependent membrane depolarizations, resembling in their periodicity and duration the phasic activity of vasopressin neurons recorded extracellularly in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Theodosis, D T -- Legendre, P -- Vincent, J D -- Cooke, I -- New York, N.Y. -- Science. 1983 Sep 9;221(4615):1052-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6348947" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Calcium/*pharmacology ; Cells, Cultured ; *Electrophysiology ; Histocytochemistry ; Hypothalamus/analysis/*cytology ; Immunologic Techniques ; Mice ; Neurons/analysis ; Vasopressins/*analysis
    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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  • 88
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    alpha-Difluoromethylornithine-induced polyamine depletion of 9L tumor cells modifies drug-induced DNA cross-link formation (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-12-09
    Description: Depletion of intracellular levels of polyamines, which are believed to have a role in the intranuclear stabilization of DNA, alters the cytotoxicity of 1,3-bis(2-chloroethyl)-1-nitrosourea and cis-diamminedichloroplatinum II in 9L rat brain tumor cells. Alkaline elution techniques were used to show that polyamine depletion alters the number of DNA cross-links formed by these cytotoxic agents.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tofilon, P J -- Deen, D F -- Marton, L J -- CA-09215/CA/NCI NIH HHS/ -- CA-13525/CA/NCI NIH HHS/ -- CA-31867/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Dec 9;222(4628):1132-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6417790" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carmustine/*pharmacology ; Cells, Cultured ; Cisplatin/*pharmacology ; Cross-Linking Reagents ; *DNA/radiation effects ; Eflornithine ; Ornithine/*analogs & derivatives/pharmacology ; Ornithine Decarboxylase Inhibitors ; Polyamines/antagonists & inhibitors ; Rats
    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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  • 89
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    Measurement of suppressor transfer RNA activity (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-08-26
    Description: Transfer RNA (tRNA) suppression of nonsense mutations in prokaryotic systems has been widely used to study the structure and function of different prokaryotic genes. Through genetic engineering techniques, it is now possible to introduce suppressor (Su+) tRNA molecules into mammalian cells. A quantitative assay of the suppressor tRNA activity in these mammalian cells is described; it is based on the amount of tRNA-mediated readthrough of a terminating codon in the influenza virus NS1 gene after the cells are infected with virus. Suppressor activity in L cells continuously expressing Su+ (tRNAtyr) was 3.5 percent and that in CV-1 cells infected with an SV40- Su+ (tRNAtyr) recombinant was 22.5 percent.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Young, J F -- Capecchi, M -- Laski, F A -- RajBhandary, U L -- Sharp, P A -- Palese, P -- AI-11823/AI/NIAID NIH HHS/ -- AI-18998/AI/NIAID NIH HHS/ -- GM17151/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Aug 26;221(4613):873-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6308765" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Eukaryotic Cells/physiology ; Genes, Viral ; Mice ; Orthomyxoviridae/genetics ; Peptide Chain Termination, Translational ; Protein Biosynthesis ; RNA, Transfer/*genetics ; Simian virus 40/genetics ; *Suppression, Genetic
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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