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  • Cells, Cultured  (87)
  • Base Sequence  (46)
  • American Association for the Advancement of Science (AAAS)  (129)
  • Annual Reviews
  • 1980-1984  (129)
  • 1955-1959
  • 1930-1934
  • 1982  (64)
  • 1981  (65)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (129)
  • Annual Reviews
Years
  • 1980-1984  (129)
  • 1955-1959
  • 1930-1934
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
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    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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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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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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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Genes regulated through chromatin structure (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-11-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G B -- New York, N.Y. -- Science. 1981 Nov 13;214(4522):775-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7292010" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chromatin/*ultrastructure ; Deoxyribonucleases/metabolism ; *Gene Expression Regulation ; Humans ; Nucleic Acid Conformation
    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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    Cloned viral protein vaccine for foot-and-mouth disease: responses in cattle and swine (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-12-04
    Description: A DNA sequence coding for the immunogenic capsid protein VP3 of foot-and-mouth disease virus A12, prepared from the virion RNA, was ligated to a plasmid designed to express a chimeric protein from the Escherichia coli tryptophan promoter-operator system. When Escherichia coli transformed with this plasmid was grown in tryptophan-depleted media, approximately 17 percent of the total cellular protein was found to be an insoluble and stable chimeric protein. The purified chimeric protein competed equally on a molar basis with VP3 for specific antibodies to foot-and-mouth disease virus. When inoculated into six cattle and two swine, this protein elicited high levels of neutralizing antibody and protection against challenge with foot-and-mouth disease virus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kleid, D G -- Yansura, D -- Small, B -- Dowbenko, D -- Moore, D M -- Grubman, M J -- McKercher, P D -- Morgan, D O -- Robertson, B H -- Bachrach, H L -- New York, N.Y. -- Science. 1981 Dec 4;214(4525):1125-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6272395" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibody Formation ; Base Sequence ; Cattle ; Cattle Diseases/*prevention & control ; *Cloning, Molecular ; DNA Restriction Enzymes ; DNA, Recombinant/metabolism ; Foot-and-Mouth Disease/*prevention & control ; Immunity, Cellular ; Protein Biosynthesis ; Swine ; Swine Diseases/*prevention & control ; Transcription, Genetic ; *Vaccines ; Viral Proteins/genetics/*therapeutic use
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    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
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  • 8
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    Range of radiochemical damage to DNA with decay of iodine-125 (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-08-21
    Description: Studies of the length of DNA fragments produced upon decay of iodine-125-labeled deoxycytidine that was located at a single position within a DNA fragment of defined sequence demonstrate that most radiochemical damage occurs within 15 to 20 angstroms of the site of iodine-125 decay. However, DNA strand breakage was detectable up to 70 angstroms from the site of iodine-125 decay.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martin, R F -- Haseltine, W A -- CA 19589/CA/NCI NIH HHS/ -- CA 25118/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Aug 21;213(4510):896-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7256283" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA/*radiation effects ; Hydrolysis ; *Iodine Radioisotopes
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Calcitonin messenger RNA encodes multiple polypeptides in a single precursor (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-07-24
    Description: Recombinant DNA techniques were used to analyze the structure of the messenger RNA encoding a precursor of calcitonin, a small calcium-regulating hormone of 32 amino acids. Analyses of the nucleotide sequences of cloned complementary DNA's comprising the entire coding sequence of the messenger RNA revealed that calcitonin is flanked at both its amino and carboxyl termini by peptide extensions linked to the hormone by short sequences of basic amino acids. The location of glycine next to the carboxyl terminal prolinamide of calcitonin is consistent with indications that glycine is required for the enzymatic amidation of proline to the prolinamide. During cellular biosynthesis, calcitonin arises from a large precursor protein by cleavages at both amino and carboxyl terminal residues of the hormone. These findings raise questions concerning the regulation of these cleavages and the potential biological functions of the precursor extensions derived from these cleavages.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jacobs, J W -- Goodman, R H -- Chin, W W -- Dee, P C -- Habener, J F -- Bell, N H -- Potts, J T Jr -- AM 27781-01/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 24;213(4506):457-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6264603" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Calcitonin/*genetics ; Cloning, Molecular ; DNA Restriction Enzymes ; DNA, Recombinant/*metabolism ; Macromolecular Substances ; Neoplasms, Experimental/metabolism ; Nucleic Acid Hybridization ; Peptide Biosynthesis ; Plants/metabolism ; Protein Biosynthesis ; RNA, Messenger/*genetics ; Rats ; Thyroid Neoplasms/metabolism ; Triticum/metabolism
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Antibodies: getting their genes together (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1981 May 29;212(4498):1015-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6785883" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/*genetics ; Base Sequence ; *Genes ; Humans ; Immunoglobulin Heavy Chains/genetics ; Immunoglobulin Light Chains/genetics ; Immunoglobulins/*genetics ; Transcription, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 11
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    Complete nucleotide sequence and organization of the Moloney murine sarcoma virus genome (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-10-23
    Description: The complete nucleotide sequence of a mammalian transforming retrovirus. Moloney murine sarcoma virus, has been determined. MSV, recombinant virus derived of helper viral and cellular sequences, possesses termini resembling prokaryotic transposable elements. The viral genome has the coding capacity for the Moloney murine leukemia virus gag gene product and contains large deletions in pol and env genes. A large open reading frame encompassing its cell-derived sequences codes for its putative transforming protein. The nature of some of the important domains in the viral genome has been established, and their structure is discussed in relation to their function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reddy, E P -- Smith, M J -- Aaronson, S A -- New York, N.Y. -- Science. 1981 Oct 23;214(4519):445-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6170110" target="_blank"〉PubMed〈/a〉
    Keywords: Antigens, Viral/genetics ; Base Sequence ; Binding Sites ; Cell Transformation, Viral ; DNA, Viral/*genetics ; Defective Viruses/genetics ; Gene Products, gag ; *Genes, Viral ; Moloney murine leukemia virus/*genetics ; RNA, Transfer/genetics ; RNA-Directed DNA Polymerase/genetics ; Repetitive Sequences, Nucleic Acid ; Sarcoma Viruses, Murine/*genetics ; Transcription, Genetic ; Viral Proteins/genetics
    Print ISSN: 0036-8075
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  • 12
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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
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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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    Vitellogenesis and the vitellogenin gene family (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-04-17
    Description: Vitellogenin is synthesized under estrogen control in the liver, extensively modified, transported to the ovary, and there processed to the yolk proteins lipovitellin and phosvitin. In the frog Xenopus laevis there are at least four distinct but related vitellogenin genes. The two genes A1 and A2 have a 95 percent sequence homology in their messenger RNA coding regions, and contain 33 introns that interrupt the coding region (exons) at homologous positions. Sequences and lengths of analogous introns differ, and many introns contain repetitive DNA elements. The introns in these two genes that have apparently arisen by duplication have diverged extensively by events that include deletions, insertions, and probably duplications. Rapid evolutionary change involving rearrangements and the presence of repeated DNA suggests that the bulk of the sequences within introns may not have any specific function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wahli, W -- Dawid, I B -- Ryffel, G U -- Weber, R -- New York, N.Y. -- Science. 1981 Apr 17;212(4492):298-304.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209528" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cloning, Molecular ; DNA/genetics ; Estrogens/physiology ; Female ; *Genes ; Lipoproteins/*genetics ; Liver/secretion ; Male ; Oocytes/metabolism ; RNA, Messenger/metabolism ; Receptors, Estrogen/metabolism ; Repetitive Sequences, Nucleic Acid ; Vitellogenins/biosynthesis/*genetics ; Xenopus laevis/*genetics/metabolism
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 14
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    The complete index to man (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-01-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wade, N -- New York, N.Y. -- Science. 1981 Jan 2;211(4477):33-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7444446" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA/*genetics ; Electrophoresis, Polyacrylamide Gel ; Humans ; Isoelectric Point ; Molecular Weight ; Proteins/analysis/*genetics
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  • 15
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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
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  • 16
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    Three distinct genes in human DNA related to the transforming genes of mammalian sarcoma retroviruses (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-07-10
    Description: Southern blot hybridization was used to identify human and other vertebrate DNA sequences that were homologous to cloned DNA fragments containing the oncogenic nucleic acid sequences of three different type C mammalian retroviruses (simian sarcoma virus, the Snyder-Theilen strain of feline sarcoma virus, and the Harvey strain of murine sarcoma virus). Each onc gene counterpart has a single genetic locus, which probably contains non-onc intervening sequences. The human DNA sequences may represent genes important to cell growth or cell differentiation, or both. Their identification and isolation may allow elucidation of their role in these processes and in neoplasias.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wong-Staal, F -- Dalla-Favera, R -- Franchini, G -- Gelmann, E P -- Gallo, R C -- New York, N.Y. -- Science. 1981 Jul 10;213(4504):226-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6264598" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Cell Transformation, Viral ; *Cloning, Molecular ; DNA/*genetics ; DNA, Viral/*genetics ; *Genes ; Humans ; Nucleic Acid Hybridization ; Retroviridae/*genetics ; Sarcoma Virus, Woolly Monkey/genetics ; Sarcoma Viruses, Murine/genetics ; Species Specificity
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  • 17
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    Radiosensitization of hypoxic tumor cells by depletion of intracellular glutathione (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-08-06
    Description: Depletion of glutathione in Chinese hamster ovary cells in vitro by diethyl maleate resulted in enhancement of the effect of x-rays on cell survival under hypoxic conditions but not under oxygenated conditions. Hypoxic EMT6 tumor cells were similarly sensitized in vivo. The action of diethyl maleate is synergistic with the effect of the electron-affinic radiosensitizer misonidazole, suggesting that the effectiveness of misonidazole in cancer radiotherapy may be improved by combining it with drugs that deplete intracellular glutathione.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bump, E A -- Yu, N Y -- Brown, J M -- CA-15201/CA/NCI NIH HHS/ -- CM-87207/CM/NCI NIH HHS/ -- New York, N.Y. -- Science. 1982 Aug 6;217(4559):544-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7089580" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anoxia ; Cell Survival/drug effects/*radiation effects ; Cells, Cultured ; Cricetinae ; Cricetulus ; Drug Synergism ; Glutathione/*metabolism ; Maleates/administration & dosage ; Mice ; Mice, Inbred BALB C ; Misonidazole/administration & dosage ; Neoplasms, Experimental/metabolism ; *Oxygen Consumption
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  • 18
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    In vitro Evidence for two distinct hippocampal growth factors: basis of neuronal plasticity? (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-07-02
    Description: The rat hippocampal formation was tested for the presence of factors that would accelerate neurite extension from chick parasympathetic (ciliary ganglion) or sympathetic (lumbar chain) neurons in vitro. Two growth factors were identified in extracts of this brain region. One accelerated neurite extension from sympathetic neurons and was blocked by antiserum to nerve growth factor. The other accelerated neurite extension from parasympathetic neurons but was not affected by the antiserum. These results suggest that specific growth factors account for the specificity of neuronal sprouting.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Crutcher, K A -- Collins, F -- NS 17131/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Jul 2;217(4554):67-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7089542" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/physiology ; Cells, Cultured ; Chick Embryo ; Ganglia, Parasympathetic/physiology ; Ganglia, Sympathetic/physiology ; Growth Substances/*physiology ; Hippocampus/*physiology ; Neurons/*physiology
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  • 19
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    Receptors for maleylated proteins regulate secretion of neutral proteases by murine macrophages (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-11-05
    Description: Receptors for maleylated or acetylated proteins as well as for alpha-2-macroglobulin-protease complexes on macrophages serve as scavengers by mediating the uptake of macromolecules from the extracellular compartment. Described in this report is a novel function of these receptors on macrophages: regulation of neutral protease secretion. The binding of maleylated bovine serum albumin to macrophages triggered secretion of three neutral proteases: neutral caseinases, plasminogen activator, and cytolytic proteinase. Release of acid phosphatase, however, was not induced. An important biological consequence of protease secretion by macrophages, tumor-cytolysis, was also triggered by engagement of the receptor for maleylated bovine serum albumin. By contrast, the binding of alpha-2-macroglobulin-protease complexes to the macrophages suppressed secretion of all three proteases. Thus two receptors heretofore believed to serve principally as scavengers also regulate secretory functions of macrophages.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Johnson, W J -- Pizzo, S V -- Imber, M J -- Adams, D O -- New York, N.Y. -- Science. 1982 Nov 5;218(4572):574-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6289443" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Glycoproteins/*metabolism ; Macrophages/*enzymology ; *Metalloendopeptidases ; Mice ; Peptide Hydrolases/*secretion ; Plasminogen Activators/secretion ; Receptors, Cell Surface/*physiology
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  • 20
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    alpha A-crystallin messenger RNA of the mouse lens: more noncoding than coding sequences (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-02-19
    Description: The 14S messenger RNA (1300 to 1500 nucleotides) for the alpha A chain of alpha-crystallin of the mammalian lens is nearly three times larger than required to code for the polypeptide that contains 173 amino acids. As a means of accounting for this anomaly, a complementary DNA clone for the mouse alpha A-crystallin messenger RNA was constructed in pBR322 and sequenced. Derivation of the protein sequence from the nucleic acid sequence showed that mouse alpha A-crystallin is similar to that of other organisms. The messenger RNA contains 536 nucleotides located on the 3' side of the coding region, excluding the polyadenylate stretch. This 3' sequence does not encode any other crystallin and has multiple termination codons in the three possible reading frames.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉King, C R -- Shinohara, T -- Piatigorsky, J -- New York, N.Y. -- Science. 1982 Feb 19;215(4535):985-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7156978" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cloning, Molecular ; Crystallins/*genetics ; Mice ; RNA, Messenger/*genetics
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  • 21
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    Long-awaited decision on DNA database (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-08-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1982 Aug 27;217(4562):817-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7100925" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; *DNA/*analysis ; *Information Systems
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  • 22
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    Repeated DNA still in search of a function (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-08-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1982 Aug 13;217(4560):621-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6283639" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; DNA/*genetics ; DNA Transposable Elements ; DNA, Satellite/genetics ; *Repetitive Sequences, Nucleic Acid ; Species Specificity
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  • 23
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    Eukaryotic transcriptional regulation and chromatin-associated protein phosphorylation by cyclic AMP (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-12-24
    Description: Cyclic adenosine monophosphate (AMP) analogs or agents that increase intracellular cyclic AMP rapidly stimulate transcription of the prolactin gene in a line of cultured rat pituitary cells. This effect is correlated with the phosphorylation of a chromatin-associated basic protein designated BPR. These data are consistent with the postulate that increased intracellular cyclic AMP concentrations induce rapid transcriptional effects on specific genes in eukaryotes, mediated by direct or indirect phosphorylation of a specific chromatin-associated protein or proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Murdoch, G H -- Rosenfeld, M G -- New York, N.Y. -- Science. 1982 Dec 24;218(4579):1315-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6293056" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Chromatin/*metabolism ; Cyclic AMP/analogs & derivatives/*metabolism ; Nucleoproteins/metabolism ; Phosphorylation ; Pituitary Gland/metabolism ; Prolactin/genetics ; Rats ; *Transcription, Genetic
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  • 24
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    Nucleotide sequence of the transforming gene of avian myeloblastosis virus (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-06-25
    Description: Avian myeloblastosis virus is defective in reproductive capacity, requiring a helper virus to provide the viral proteins essential for synthesis of new infectious virus. This virus arose by recombination of the nondefective helper virus and host cellular sequences present within the normal avian genome. These latter sequences are essential for leukemogenic activity. The complete nucleotide sequence of this region is reported. Within the acquired cellular sequences there is an open reading frame of 795 nucleotides starting with the initiation codon ATG (adenine, thymine, guanine) and terminating with the triplet TAG. This open reading frame could code for the putative transforming protein of 265 amino acids with a molecular weight of approximately 30,000.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rushlow, K E -- Lautenberger, J A -- Papas, T S -- Baluda, M A -- Perbal, B -- Chirikjian, J G -- Reddy, E P -- New York, N.Y. -- Science. 1982 Jun 25;216(4553):1421-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6283631" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avian Leukosis Virus/*genetics ; Avian Myeloblastosis Virus/*genetics ; Avian Sarcoma Viruses/genetics ; Base Sequence ; Cell Transformation, Viral ; Chickens/genetics ; DNA Restriction Enzymes ; Gene Expression Regulation ; *Genes, Viral ; RNA, Viral/analysis ; Viral Proteins/biosynthesis
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  • 25
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    Brain injury causes a time-dependent increase in neuronotrophic activity at the lesion site (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-08-27
    Description: A cavity was made in the brain (entorhinal cortex) of developing or adult rats, and a small piece of Gelfoam was emplaced to collect fluid secreted into the wound. The neuronotrophic activity of the fluid was assayed with sympathetic and parasympathetic neurons in culture. The results show that wounds in the brain of developing or adult rats stimulate the accumulation of neuronotrophic factors and that the activity of these factors increases over the first few days after infliction of the damage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nieto-Sampedro, M -- Lewis, E R -- Cotman, C W -- Manthorpe, M -- Skaper, S D -- Barbin, G -- Longo, F M -- Varon, S -- AG-00538/AG/NIA NIH HHS/ -- MH-19691/MH/NIMH NIH HHS/ -- NS-16349/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Aug 27;217(4562):860-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7100931" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenergic Fibers/physiology ; Animals ; Brain/*physiology ; Brain Injuries/*physiopathology ; Cell Survival/drug effects ; Cells, Cultured ; Cholinergic Fibers/physiology ; Kinetics ; Nerve Growth Factors/*metabolism/pharmacology ; *Nerve Regeneration ; Rats ; Rats, Inbred Strains ; Wound Healing
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  • 26
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    Proliferative capacity of murine hematopoietic stem cells in vitro (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-03-26
    Description: Large numbers of granulocytes can be collected repeatedly from the supernatant medium of long-term cultures of mouse bone marrow cells. A constant relationship was found between the number of adherent hematopoietic stem cells and the lifetime cell production per culture. The data indicate that there is a limit to the proliferative capacity of normal and of irradiated stem cells. A similar limitation was found in the production of marked granulocytes from clonal cultures of "beige" C57 (bg/bgJ) stem cells placed in limiting dilutions into stromal culture layers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reincke, U -- Hannon, E C -- Rosenblatt, M -- Hellman, S -- CA 10941/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1982 Mar 26;215(4540):1619-22.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7071580" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Bone Marrow Cells ; Cell Division/radiation effects ; Cells, Cultured ; Granulocytes/physiology ; *Hematopoiesis/radiation effects ; Hematopoietic Stem Cells/*cytology ; Mice ; Spleen/cytology
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  • 27
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    In vivo identification of the transforming gene product of simian sarcoma virus (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-12-10
    Description: Simian sarcoma virus (SSV) deletion mutants were constructed from a molecular clone containing the entire infectious provirus. Transfection analysis of these mutants localized the SSV transforming gene to a small region of the viral genome encompassing its cell-derived sequence (v-sis). Antiserum to a peptide synthesized on the basis of the predicted amino acid sequence of the SSV transforming gene detected a 28,000-dalton protein that was specifically expressed in SSV transformed cells and that corresponded in size to that predicted from the v-sis coding sequence. The v-sis gene product designated p28sis was not a phosphoprotein, nor did it possess detectable protein kinase activity. These findings distinguish p28sis from a number of other retroviral onc proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Robbins, K C -- Devare, S G -- Reddy, E P -- Aaronson, S A -- New York, N.Y. -- Science. 1982 Dec 10;218(4577):1131-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6293053" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Viral ; Base Sequence ; *Cell Transformation, Viral ; *Genes, Viral ; Mice ; Molecular Weight ; *Oncogenes ; Phosphoproteins/genetics ; Protein Kinases/genetics ; Retroviridae/*genetics ; Sarcoma Virus, Woolly Monkey/*genetics ; Viral Proteins/*genetics/immunology
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  • 28
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    The Alu family of dispersed repetitive sequences (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-06-04
    Description: A family of related sequences that includes approximately 500,000 members is the most prominent short dispersed repeat family in primate and rodent DNA's. The primate sequence is approximately 300 base pairs in length and is composed of two imperfectly repeated monomer units, whereas the rodent repeat consists of only a single monomer. Properties of this repeat sequence, its flanking sequences in chromosomal DNA, and RNA's transcribed from it suggest that it may be a mobile DNA element inserted at hundreds of thousands of different chromosomal locations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schmid, C W -- Jelinek, W R -- New York, N.Y. -- Science. 1982 Jun 4;216(4550):1065-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6281889" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Biological Evolution ; DNA/*genetics ; *DNA Transposable Elements ; Genetic Linkage ; Muridae/genetics ; Primates/genetics ; RNA Polymerase III/metabolism ; RNA, Heterogeneous Nuclear/genetics ; *Repetitive Sequences, Nucleic Acid ; Transcription, Genetic
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  • 29
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    Hormonal regulation of gonadotropin receptors and steroidogenesis in cultured fetal rat tests (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-10-22
    Description: Gonadotropic activation of the adult rat testis in vitro and in vivo is followed by down-regulation of luteinizing hormone receptors and decreased androgen responses to subsequent hormonal stimulation. In contrast, treatment of cultured fetal testes with gonadotropins and dibutyryl adenosine 3',5'-monophosphate enhanced steroidogenic responsiveness and did not cause the luteinizing hormone-receptor loss and desensitization that is characteristic of the adult gonad. The analysis of gonadotropin receptors and action in cultured fetal testis cells facilitates developmental studies of gonadal function, and has revealed significant differences in the responses of fetal and adult Leydig cells to gonadotropic regulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Warren, D W -- Dufau, M L -- Catt, K J -- 1F33-HD06192/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1982 Oct 22;218(4570):375-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6289438" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bucladesine/pharmacology ; Cell Differentiation/drug effects ; Cells, Cultured ; Chorionic Gonadotropin/pharmacology ; Hydroxyprogesterones/biosynthesis ; Leydig Cells/*drug effects ; Luteinizing Hormone/pharmacology ; Male ; Progesterone/biosynthesis ; Rats ; Receptors, Cell Surface/*drug effects/metabolism ; Receptors, LH ; Testis/*embryology/metabolism ; Testosterone/biosynthesis
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  • 30
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    Wound tissue can utilize a polymeric template to synthesize a functional extension of skin (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-01-08
    Description: Prompt and long-term closure of full-thickness skin wounds is guinea pigs and humans is achieved by applying a bilayer polymeric membrane. The membrane comprises a top layer of a silicone elastomer and a bottom layer of a porous cross-linked network of collagen and glycosaminoglycan. The bottom layer can be seeded with a small number of autologous basal cells before grafting. No immunosuppression is used and infection, exudation, and rejection are absent. Host tissue utilizes the sterile membrane as a culture medium to synthesize neoepidermal and neodermal tissue. A functional extension of skin over the entire wound area is formed in about 4 weeks.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yannas, I V -- Burke, J F -- Orgill, D P -- Skrabut, E M -- GM 21700/GM/NIGMS NIH HHS/ -- GM 23946/GM/NIGMS NIH HHS/ -- HL 14322/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1982 Jan 8;215(4529):174-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7031899" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Animals ; Burns/*therapy ; Cells, Cultured ; Child ; Child, Preschool ; Collagen/therapeutic use ; Female ; Glycosaminoglycans/therapeutic use ; Guinea Pigs ; Humans ; Male ; Middle Aged ; Silicone Elastomers/therapeutic use ; *Skin Transplantation ; *Wound Healing
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  • 31
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    Translational efficiency of transfer RNA's: uses of an extended anticodon (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-11-12
    Description: Transfer RNA's are probably very strongly selected for translational efficiency. In this article, the argument is presented that the coding performance of the triplet anticodon is enhanced by selection of a matching anticodon loop and stem sequence. the anticodon plus these nearby sequence features (the extended anticodon) therefore contains more coding information than the anticodon alone and can perform more efficiently and accurately at the ribosome. This idea successfully accounts for the relative efficiencies of many transfer RNA's.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yarus, M -- New York, N.Y. -- Science. 1982 Nov 12;218(4573):646-52.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6753149" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Escherichia coli/genetics ; Kinetics ; Nucleic Acid Conformation ; *Protein Biosynthesis ; RNA, Transfer/*genetics ; Ribosomes/metabolism ; Structure-Activity Relationship ; Suppression, Genetic
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  • 32
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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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  • 33
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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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    Lateral diffusion of surface molecules in animal cells and tissues (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    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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    DNA sequencing and gene structure (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-12-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gilbert, W -- New York, N.Y. -- Science. 1981 Dec 18;214(4527):1305-12.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7313687" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Chemical Phenomena ; Chemistry ; DNA/*genetics ; Eukaryotic Cells/physiology ; *Genes ; Hydrazines ; Lac Operon ; Methylation ; Prokaryotic Cells/physiology ; Sulfuric Acid Esters
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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)
    Details
    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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  • 40
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    Absence of correlation between base-pair sequence and RNA conformation (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-06-12
    Description: A survey of all available double-stranded RNA crystal structures shows that there is a considerable range of variation in local conformation of a given base-pair doublet, but that there is no significant correlation between base-pair sequence and RNA local conformation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holbrook, S R -- Sussman, J L -- Kim, S H -- CA 27454/CA/NCI NIH HHS/ -- NS 15174/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Jun 12;212(4500):1275-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6165084" target="_blank"〉PubMed〈/a〉
    Keywords: Base Composition ; Base Sequence ; *Nucleic Acid Conformation ; *Rna ; RNA, Double-Stranded
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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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    Phagocyte impotence caused by an invasive bacterial adenylate cyclase (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-09-03
    Description: For unknown reasons, humans infected with the bacterium Bordetella pertussis are exceptionally vulnerable to secondary infections. Bordetella species elaborate a soluble, heat-stable, and highly active adenylate cyclase. This enzyme is internalized by phagocytic cells and catalyzes the unregulated formation of adenosine 3',5'-monophosphate (cyclic AMP), thereby disrupting normal cellular function. This unusual phenomenon may explain Bordetella-induced aphylaxis and may prove to be useful for investigating a variety of cyclic AMP-governed processes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Confer, D L -- Eaton, J W -- 5T32H- L07062/PHS HHS/ -- New York, N.Y. -- Science. 1982 Sep 3;217(4563):948-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6287574" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclases/*metabolism ; Animals ; Bordetella pertussis/*enzymology ; Cells, Cultured ; Cyclic AMP/biosynthesis ; Humans ; Macrophages/physiology ; Neutrophils/physiology ; Phagocytes/*physiology ; Rabbits ; Superoxides/metabolism ; Temperature
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    Fragment spanning the SV40 replication origin is the only DNA sequence required in cis for viral excision (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-12-17
    Description: A 311-base pair fragment containing the SV40 origin of replication was linked to the chicken thymidine kinase gene on a recombinant plasmid. This molecule was transfected into human 143 thymidine kinase-deficient (TK-) cells, and colonies positive for thymidine kinase were selected. When cell lines derived from these colonies were fused to permissive simian cells that produce SV40 T antigen, the recombinant plasmid excised itself from the human cellular genome and replicated with a high copy number per cell. These results show that this segment of the viral genome is the only sequence required in cis to mediate SV40 excision and replication upon fusion to permissive cells. In addition, we have shown that excised plasmids apparently identical to the input DNA can be efficiently rescued in Escherichia coli. SV40 excision and replication may therefore be useful for the recovery of cloned genes from eukaryotic cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Conrad, S E -- Liu, C P -- Botchan, M R -- CA 30490/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1982 Dec 17;218(4578):1223-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6293055" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cells, Cultured ; Chickens ; *DNA Replication ; DNA, Viral/*genetics ; Gene Expression Regulation ; Genes, Viral ; Humans ; Recombination, Genetic ; Simian virus 40/*genetics ; *Virus Replication
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    Cellular transforming genes (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-08-27
    Description: Cellular genes potentially capable of inducing oncogenic transformation have been identified by homology to the transforming genes of retroviruses and by the biological activity of cellular DNA's in transfection assays. DNA's of various tumors induce transformation with high efficiencies, indicating that oncogenesis can involve dominant genetic alterations resulting in activation of cellular transforming genes. The identification and characterization of cellular transforming genes and their possible involvement in naturally occurring cancers, is discussed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cooper, G M -- New York, N.Y. -- Science. 1982 Aug 27;217(4562):801-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6285471" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Cell Transformation, Neoplastic ; Cells, Cultured ; Chick Embryo ; DNA/genetics ; DNA Restriction Enzymes ; DNA, Viral/genetics ; Gene Expression Regulation ; *Genes ; Genes, Viral ; Humans ; Mice ; Neoplasms/*genetics ; Oncogene Protein pp60(v-src) ; Rats ; Retroviridae/*genetics ; Transfection ; Viral Proteins/genetics
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    Molecular biology of the sea urchin embryo (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-07-02
    Description: Research on the early development of the sea urchin offers new insights into the process of embryogenesis. Maternal messenger RNA stored in the unfertilized egg supports most of the protein synthesis in the early embryo, but the structure of maternal transcripts suggests that additional functions are also possible. The overall developmental patterns of transcription and protein synthesis are known, and current measurements describe the expression of specific genes, including the histone genes, the ribosomal genes, and the actin genes. Possible mechanisms of developmental commitment are explored for regions of the early embryo that give rise to specified cell lineages, such as the micromere-mesenchyme cell lineage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davidson, E H -- Hough-Evans, B R -- Britten, R J -- GM20927/GM/NIGMS NIH HHS/ -- HD05753/HD/NICHD NIH HHS/ -- RR00986/RR/NCRR NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1982 Jul 2;217(4554):17-26.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6178156" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/genetics ; Animals ; Base Sequence ; Blastocyst/physiology ; Embryo, Nonmammalian/*physiology ; Female ; Fertilization ; Gastrula/physiology ; Histones/genetics ; Kinetics ; Larva/physiology ; Polyribosomes/metabolism ; RNA/genetics ; RNA, Messenger/genetics ; Ribosomal Proteins/genetics ; Sea Urchins/*physiology ; Transcription, Genetic
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    Multiplication of tobacco mosaic virus in tobacco leaf disks is inhibited by (2'-5) oligoadenylate (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-06-25
    Description: The oligonucleotide (2'-5') oligoadenylate that is induced in interferon-treated animal cells protects plant tissue from infection by the tobacco mosaic virus. This inhibition of virus multiplication was obtained at concentrations comparable to those affecting protein synthesis and antiviral activities in animal cells. After treatment with (2'-5') oligoadenylate, the multiplicability of tobacco mosaic virus was reduced by 80 to 90 percent as measured by enzyme-linked immunosorbent assay. These results, along with the observation that human interferon protects tobacco tissue from infection by tobacco mosaic virus, indicate that plants and animals may have a common pathway for virus resistance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Devash, Y -- Biggs, S -- Sela, I -- New York, N.Y. -- Science. 1982 Jun 25;216(4553):1415-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6178155" target="_blank"〉PubMed〈/a〉
    Keywords: Adenine Nucleotides/*pharmacology ; Animals ; Cells, Cultured ; Interferons/pharmacology ; Kinetics ; Oligonucleotides/*pharmacology ; Oligoribonucleotides/*pharmacology ; Plants, Toxic ; Tobacco/microbiology ; Tobacco Mosaic Virus/*drug effects ; Virus Replication/drug effects
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    Nucleotide sequence of the p21 transforming protein of Harvey murine sarcoma virus (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-09-03
    Description: Harvey murine sarcoma virus is a retrovirus which transforms cells by means of a single virally encoded protein called p21 has. We have determined the nucleotide sequence of 1.0 kilobase in the 5' half of the viral genome which encompasses the has coding sequences and its associated regulatory signals. The nucleotide sequence has identified the amino acid sequence of two additional overlapping polypeptides which share their reading frames and the carboxyl termini with p21 but which contain additional NH2-terminal amino acids.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dhar, R -- Ellis, R W -- Shih, T Y -- Oroszlan, S -- Shapiro, B -- Maizel, J -- Lowy, D -- Scolnick, E -- New York, N.Y. -- Science. 1982 Sep 3;217(4563):934-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6287572" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Transformation, Viral ; Cells, Cultured ; Defective Viruses/*genetics ; Genes, Viral ; Oncogene Protein p21(ras) ; Peptide Fragments ; Protein Biosynthesis ; Protein Conformation ; RNA, Viral/genetics ; Sarcoma Viruses, Murine/*genetics ; Viral Proteins/analysis/*genetics
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    Secretion of newly taken-up ascorbic acid by adrenomedullary chromaffin cells (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-05-14
    Description: Primary cultures of bovine adrenomedullary cells accumulate carbon-14-labeled ascorbic acid through a saturable and energy-dependent process. The newly taken-up ascorbate is released concomitantly with catecholamines upon stimulation of chromaffin cell secretion. The release of ascorbate is Ca2+-dependent and mediated through activation of nicotinic receptors. These results indicate that exogenous ascorbate taken up into chromaffin cells is incorporated in situ into a secretable compartment, probably the catecholamine-containing chromaffin vesicles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Daniels, A J -- Dean, G -- Viveros, O H -- Diliberto, E J Jr -- New York, N.Y. -- Science. 1982 May 14;216(4547):737-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7079733" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenal Medulla/*secretion ; Animals ; Ascorbic Acid/metabolism/*secretion ; Biological Transport, Active ; Calcium/physiology ; Cattle ; Cells, Cultured ; Chromaffin Granules/metabolism ; Chromaffin System/*secretion ; Nicotine/pharmacology ; Receptors, Nicotinic/physiology ; Secretory Rate/drug effects
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    Events in the evolution of pre-proinsulin (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-08-20
    Description: An extensive computer-assisted analysis of known pre-proinsulin coding sequences has shown correlations that can be interpreted as evidence for an intron-mediated juxtaposition of exons in the evolution of these genes. The evidence includes the discovery that the regions of the pre-proinsulin genes that code for the signal peptide consist of nearly tandem repeating units of nine base pairs. This pattern reappears in the C region of the genes after a large intron that occurs in three of the four genes analyzed. A model is proposed in which primordial insulin was coded for by two separate minigenes arising from a gene duplication, each with identical or nearly identical signal peptide coding regions. The minigenes fused into one transcriptional unit mediated by the large intron, and the signal peptide coding region of one of the putative minigenes evolved into the latter portion of the C peptide coding region.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Douthart, R J -- Norris, F H -- New York, N.Y. -- Science. 1982 Aug 20;217(4561):729-32.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7100918" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Biological Evolution ; Computers ; Cricetinae ; Disulfides ; Genes ; Humans ; Insulin ; Models, Genetic ; Proinsulin/*genetics ; Protein Precursors/*genetics ; Rats ; Repetitive Sequences, Nucleic Acid
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    Placental mononuclear phagocytes as a source of interleukin-1 (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-10-29
    Description: Mouse and human placental tissue contains a large number of mononuclear phagocytes. These cells, isolated from placenta, were shown to produce the multifaceted immune factor interleukin-1. Activity in the supernatants of 48-hour mononuclear phagocyte cultures was associated with a 12,000- to 18,000-dalton protein, consistent with known interleukin-1 characteristics. Stimulation of phagocytosis with latex beads increased the production and release of interleukin-1 from these placental cells, which may be a useful source of this protein.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Flynn, A -- Finke, J H -- Hilfiker, M L -- CA 24474/CA/NCI NIH HHS/ -- CA 34107/CA/NCI NIH HHS/ -- RR 00210/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1982 Oct 29;218(4571):475-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6981846" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Culture Media ; Humans ; Interleukin-1/*biosynthesis ; Interleukin-2/analysis ; Mice ; Phagocytes/*immunology ; Placenta/cytology/*immunology
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    Boradeption: a new procedure for transferring water-insoluble agents across cell membranes (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-07-09
    Description: A new process has been developed which is called "Boradeption" to signify boronic acid--dependent phase transfer of water-insoluble agents. Highly fluorescent boronic acid dervatives, FluoroBoras, are solubilized with a physiologically compatible carrier buffer containing a receptor group for boronate adduct formation. The system can be used to stain living cells. In another variation of the Boradeption concept, an insoluble reporter molecule containing a boronate receptor is solubilized with a carrier buffer containing a boronic acid functional group. The boronate-receptor complexes, which are in dynamic equilibrium, can be designed as vital stains and reagents for a variety of biological and medical applications.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gallop, P M -- Paz, M A -- Henson, E -- AG-00376-07/AG/NIA NIH HHS/ -- HL-20764-04A1/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1982 Jul 9;217(4555):166-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6178158" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Transport ; *Boron Compounds/therapeutic use ; *Boronic Acids/therapeutic use ; *Cell Membrane Permeability ; Cells, Cultured ; Chemical Phenomena ; Chemistry ; Chromogenic Compounds/metabolism ; Cricetinae ; Fibroblasts ; Fluorescent Dyes/metabolism ; Humans ; Rats ; Staining and Labeling
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    Active genes are sensitive to deoxyribonuclease I during metaphase (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-08-13
    Description: The active exogenous murine leukemia virus sequences of mouse cells growing in culture are preferentially digested by deoxyribonuclease I in metaphase chromosomes. As determined by nuclear nick translation, all of the gene sequences of these cells active during interphase are in a deoxyribonuclease I-sensitive conformation during metaphase. This method of nick translation can therefore be used to label chromosomes in situ in order to visualize the active regions of the genome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gazit, B -- Cedar, H -- Lerer, I -- Voss, R -- GM 20483/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1982 Aug 13;217(4560):648-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6283640" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Chromosomes, Human ; DNA/*genetics ; Deoxyribonuclease I ; Deoxyribonucleases/*pharmacology ; Endonucleases/*pharmacology ; Fibroblasts/metabolism ; Genes, Viral ; Humans ; Interphase ; Leukemia Virus, Murine/genetics ; *Metaphase ; Mice ; RNA, Viral/*genetics ; Transcription, Genetic
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Insulin stimulates the phosphorylation of the 95,000-dalton subunit of its own receptor (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-01-08
    Description: Cultured human lymphocytes and rat hepatoma cells were labeled with [32P]orthophosphate and the insulin receptor subunits identified by immunoprecipitation and sodium dodecyl sulfate-gel electrophoreses. In both cell types the 95,000-dalton (beta) subunit of the insulin receptor was selectively phosphorylated. Phosphorylation was specifically stimulated by insulin in a dose-dependent fashion after 1 and 15 minutes of hormone treatment, whereas human growth hormone was without effect. This phosphorylation may be a very early event in insulin action.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kasuga, M -- Karlsson, F A -- Kahn, C R -- New York, N.Y. -- Science. 1982 Jan 8;215(4529):185-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7031900" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Growth Hormone/pharmacology ; Humans ; Insulin/*pharmacology ; Liver Neoplasms, Experimental/metabolism ; Lymphocytes ; Macromolecular Substances ; Molecular Weight ; Phosphorylation ; Rats ; Receptor, Insulin/*metabolism
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    Identification of a BALB/c H-2Ld gene by DNA-mediated gene transfer (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-02-05
    Description: Gene transfer and immunoselection were used in the identification of a BALB/c genomic clone containing an H-2Ld gene (clone 27.5). Transformation of thymidine kinase-negative C3H mouse L cells with the cloned 27.5 DNA together with the herpes simplex virus tk gene produced transformants expressing Ld molecules detected by radioimmune assay with monoclonal hybridoma antibodies to Ld antigens. The foreign Ld gene products expressed by cloned mouse L cell transformants were shown to be virtually indistinguishable from BALB/c spleen Ld molecules by two-dimensional electrophoretic analysis of H-2Ld immunoprecipitates. These results indicate that the genomic clone 27.5 contains a functional BALB/c H-2Ld gene and demonstrate the usefulness of this approach for identifying the gene products encoded by cloned genes which are members of a multigene family. Furthermore, the ability to place cell-surface recognition molecules on the surfaces of foreign cells provides a powerful opportunity for functional analyses of these molecules.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goodenow, R S -- McMillan, M -- Orn, A -- Nicolson, M -- Davidson, N -- Frelinger, J A -- Hood, L -- CA 22662/CA/NCI NIH HHS/ -- CA 26199/CA/NCI NIH HHS/ -- GM 06965/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1982 Feb 5;215(4533):677-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7058331" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Genes ; H-2 Antigens/*genetics ; Isoelectric Point ; L Cells (Cell Line) ; Mice ; Mice, Inbred BALB C/*genetics ; Transformation, Genetic
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    Mammalian tyrosinase catalyzes three reactions in the biosynthesis of melanin (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-09-17
    Description: The biosynthesis of melanin is initiated by the catalytic oxidation of tyrosine to dopa by tyrosinase in a reaction that requires dopa as a cofactor. Tyrosine then catalyzes the dehydrogenation of dopa to dopaquinone. The subsequent reactions can proceed spontaneously in vitro. Tyrosinase, purified from murine melanomas and the skins of brown mice, has now been shown to catalyze a third reaction in mammalian melanogenesis, namely the conversion of 5,6-dihydroxyindile to melanochrome. This reaction requires dopa as a cofactor and is inhibited by tyrosine. Conversely, 5,6-dihydroxyindole inhibits the oxidation of tyrosine to dopa, so that the relative concentrations of tyrosine and 5,6-dihydroxyindole within the mammalian pigment cell are capable of regulating melanogenesis in a previously unrecognized fashion. Tyrosinase has the unusual property of catalyzing three distinct reactions within a single biochemical pathway: the hydroxylation of a monophenol, the dehydrogenation of a catechol, and the dehydrogenation of a dihydroxyindole. The first and third of these reactions require dopa as a cofactor; in the second reaction, dopa is a substrate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Korner, A -- Pawelek, J -- DA-01147/DA/NIDA NIH HHS/ -- DA-05186/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1982 Sep 17;217(4565):1163-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6810464" target="_blank"〉PubMed〈/a〉
    Keywords: Catechol Oxidase/*metabolism ; Cells, Cultured ; Dihydroxyphenylalanine/metabolism ; Indoles/metabolism ; Kinetics ; Melanins/*biosynthesis ; Melanoma/enzymology ; Monophenol Monooxygenase/*metabolism ; Neoplasms, Experimental/enzymology ; Substrate Specificity ; Tyrosine/metabolism
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    Homologous regulation of gonadotropin-releasing hormone receptors in cultured pituitary cells (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-02-19
    Description: Specific receptors for gonadotropin-releasing hormone (GnRH) in cultured rat pituitary cells were increased by subnanomolar concentrations of GnRH agonists and decreased by high concentrations of these peptides. The antagonist [D-Phe2, Pro3, D-Phe6]GnRH did not alter GnRH binding capacity and blocked the increase in sites induced by GnRH. These findings provide direct evidence for the homologous regulation of GnRH receptors by physiological concentrations of the hypothalamic peptide, an action that could mediate the cyclical and postcastration increases in GnRH receptors and responsiveness of the pituitary gonadotrophs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Loumaye, E -- Catt, K J -- New York, N.Y. -- Science. 1982 Feb 19;215(4535):983-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6296998" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Dose-Response Relationship, Drug ; Feedback ; Female ; Gonadotropin-Releasing Hormone/analogs & derivatives/metabolism/pharmacology ; Pituitary Gland/secretion ; Pituitary Hormone-Releasing Hormones/*metabolism/pharmacology ; Rats ; Receptors, Cell Surface/*pharmacology ; Receptors, LHRH
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    Ornithine decarboxylase: essential in proliferation but not differentiation of human promyelocytic leukemia cells (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-04-02
    Description: The ornithine decarboxylase inhibitor DL-alpha-difluoromethyl ornithine inhibited a proliferation-associated increase in ornithine decarboxylase activity in cultured human promyelocytic leukemia cells, resulting in a marked suppression of cell proliferation and subsequent cell loss. It also inhibited increases in ornithine decarboxylase activity associated with the phorbol ester-induced conversion of promyelocytic HL-60 cells to monocyte-like cells and the retinoic acid-induced conversion to granulocyte-like cells. However, the inhibition of ornithine decarboxylase activity did not prevent cellular differentiation. These results suggest that polyamine biosynthesis has a specific role in cell proliferation rather than in inducing differentiation that is not accompanied by proliferation. The data also demonstrate that cessation of proliferation in HL-60 cells is not necessarily associated with differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Luk, G D -- Civin, C I -- Weissman, R M -- Baylin, S B -- AM-27447/AM/NIADDK NIH HHS/ -- CA-18404/CA/NCI NIH HHS/ -- HL-19157/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1982 Apr 2;216(4541):75-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6950518" target="_blank"〉PubMed〈/a〉
    Keywords: Carboxy-Lyases/*physiology ; Cell Adhesion ; Cell Differentiation ; Cell Division ; Cells, Cultured ; Female ; Granulocytes/pathology ; Humans ; Leukemia, Myeloid, Acute/*enzymology/pathology ; Macrophages/pathology ; Ornithine Decarboxylase/*physiology ; Polyamines/biosynthesis ; Tetradecanoylphorbol Acetate/pharmacology ; Tretinoin/pharmacology
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    Tumor cell-platelet aggregation: induced by cathepsin B-like proteinase and inhibited by prostacyclin (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-08-06
    Description: The ability of tumor cells to metastasize may be related to their ability to promote aggregation of host platelets. The use of inhibitors of cysteine proteinases resulted in parallel inhibition of B16 amelanotic melanoma-induced platelet aggregation and of a cathepsin B activity. The antimetastatic agent prostacyclin inhibited platelet aggregation induced by the tumor cells and by papain, a cathepsin B-mimicking agent.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Honn, K V -- Cavanaugh, P -- Evens, C -- Taylor, J D -- Sloane, B F -- CA29405/CA/NCI NIH HHS/ -- CA29997/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1982 Aug 6;217(4559):540-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7046053" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cathepsin B ; Cathepsins/*metabolism ; Cells, Cultured ; Cysteine Endopeptidases ; Endopeptidases/*metabolism ; Epoprostenol/*pharmacology ; Humans ; Melanoma/metabolism ; Mice ; Mice, Inbred C57BL ; Neoplasms, Experimental/metabolism ; Papain/pharmacology ; Platelet Aggregation/*drug effects ; Prostaglandins/*pharmacology ; Protease Inhibitors/pharmacology
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    Gene scanning with block mutations (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-07-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1982 Jul 30;217(4558):434-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6283636" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA, Recombinant ; *Gene Expression Regulation ; Genes ; Genes, Regulator ; *Mutation ; RNA, Messenger ; Simplexvirus/genetics ; Thymidine Kinase/genetics ; *Transcription, Genetic
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    Ti plasmids as gene carriers (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-06-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1982 Jun 18;216(4552):1305.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7079762" target="_blank"〉PubMed〈/a〉
    Keywords: Cells, Cultured ; *Plant Tumors ; Plants/*genetics ; *Plasmids ; Rhizobium/genetics
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    A new treatment for burn victims (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-08-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maugh, T H 2nd -- New York, N.Y. -- Science. 1982 Aug 6;217(4559):522.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7089578" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; *Bandages ; *Biological Dressings ; Burns/*therapy ; Cells, Cultured ; Child ; Child, Preschool ; Epidermis/cytology ; Humans ; Surgical Flaps ; Wound Healing
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    Transcriptional control signals of a eukaryotic protein-coding gene (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-07-23
    Description: Transcriptional control signals of a model eukaryotic protein-coding gene have been identified by a new procedure of in vitro mutagenesis. This method allows small clusters of nucleotide residues to be substituted in a site-directed manner without causing the addition or deletion of other sequences. Transcription assays of a systematic series of these clustered point mutants have led to the identification of three distinct control signals located within the 105-nucleotide residues immediately upstream from the point where transcription begins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McKnight, S L -- Kingsbury, R -- New York, N.Y. -- Science. 1982 Jul 23;217(4557):316-24.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6283634" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA, Recombinant ; *Gene Expression Regulation ; Genes ; Genes, Regulator ; *Mutation ; RNA, Messenger/analysis ; Simplexvirus/genetics ; Thymidine Kinase/genetics ; *Transcription, Genetic
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    DNA sequence of the gene encoding the E alpha Ia polypeptide of the BALB/c mouse (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-12-17
    Description: A 3.4-kilobase DNA fragment containing the gene coding for the E alpha chain of an Ia (I region-associated) antigen from the BALB/c mouse has been sequenced. It contains at least three exons, which correlate with the major structural domains of the E alpha chain-the two external domains alpha 1 and alpha 2, and the transmembrane-cytoplasmic domain. The coding sequence of the mouse E alpha gene shows striking homology to its counterpart at the DNA and protein levels. The translated alpha 2 exon demonstrates significant similarity to beta 2-microglobulin, to immunoglobulin constant region domains, and to certain domains of transplantation antigens. These observations and those of others suggest that the Ia antigen, transplantation antigen, and immunoglobulin gene families share a common ancestor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McNicholas, J -- Steinmetz, M -- Hunkapiller, T -- Jones, P -- Hood, L -- New York, N.Y. -- Science. 1982 Dec 17;218(4578):1229-32.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6815800" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Biological Evolution ; Genes ; *Genes, MHC Class II ; Macromolecular Substances ; Mice ; Mice, Inbred BALB C/*genetics ; beta 2-Microglobulin/genetics
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    Cysteamine: a potent and specific depletor of pituitary prolactin (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-07-30
    Description: Cysteamine rapidly reduces the concentration of prolactin in pituitary tissue in vivo and in vitro. The effect is dose-dependent, reversible, and cannot be accounted for by prolactin release. Cysteamine does not appear to exert its effect through dopamine receptors and does not alter lactotrope morphology, as determined by electron microscopy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Millard, W J -- Sagar, S M -- Landis, D M -- Martin, J B -- AM 26252/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1982 Jul 30;217(4558):452-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7089575" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Cysteamine/*pharmacology ; Domperidone/pharmacology ; Dose-Response Relationship, Drug ; Kinetics ; Male ; Pituitary Gland, Anterior/*metabolism ; Prolactin/analysis/*metabolism/secretion ; Rats ; Receptors, Dopamine/physiology ; Spiperone/pharmacology
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    DNA sequence of a gene encoding a BALB/c mouse Ld transplantation antigen (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-02-05
    Description: The sequence of a gene, denoted 27.5, encoding a transplantation antigen for the BALB/c mouse has been determined. Gene transfer studies and comparison of the translated sequence with the partial amino acid sequence of the Ld transplantation antigen establish that gene 27.5 encodes an Ld polypeptide. A comparison of the gene 27.5 sequence with several complementary DNA sequences suggests that the BALB/c mouse may contain a number of closely related L-like genes. Gene 27.5 has eight exons that correlate with the structural domains of the transplantation antigen.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moore, K W -- Sher, B T -- Sun, Y H -- Eakle, K A -- Hood, L -- 1 T32 GM07616/GM/NIGMS NIH HHS/ -- GM 06965/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1982 Feb 5;215(4533):679-82.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7058332" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cloning, Molecular/methods ; Genes ; H-2 Antigens/*genetics ; *Major Histocompatibility Complex ; Mice ; Mice, Inbred BALB C/*genetics ; Plasmids ; Repetitive Sequences, Nucleic Acid
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    Calcium and age in fibroblasts from control subjects and patients with cystic fibrosis (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-04-23
    Description: Intracellular calcium increases significantly as human fibroblasts age in culture. The calcium increase occurs 5 to 6 weeks (passages) earlier and is significantly greater in fibroblasts from subjects with cystic fibrosis in comparison with cells from control subjects. Intracellular calcium, which is thought to be a pathogenetic factor in cystic fibrosis, may also be a meaningful marker in cell aging.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shapiro, B L -- Lam, L F -- AG-02114/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 1982 Apr 23;216(4544):417-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7071590" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Calcium/*metabolism ; *Cell Survival ; Cells, Cultured ; Child ; Cystic Fibrosis/*metabolism/pathology ; Female ; Fibroblasts ; Humans ; Infant ; Male
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    DNA conformation, dynamics, and interactions in solution (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-05-07
    Description: The conformation and dynamics of the d(CGCGAATTCGCG) duplex, its analogs containing mismatched base pairs and helix interruptions, and its complexes with actinomycin and Netropsin, bound separately and simultaneously, have been investigated by nuclear magnetic resonance spectroscopy in aqueous solution. Structural information has been deduced from chemical shift and nuclear Overhauser effect parameters, while the kinetics have been probed from line width and saturation recovery experiments on proton and phosphorus markers at the individual base pair level. These studies lead to an improved understanding of the role of nucleic acid sequence on the structure, flexibility, and conformational interconversions in the duplex state. The nuclear magnetic resonance measurements readily identify helix modification and antibiotic binding sites on the nucleic acid and estimate the extent to which the observed conformational and dynamic perturbations are transmitted to adjacent base pair regions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Patel, D J -- Pardi, A -- Itakura, K -- New York, N.Y. -- Science. 1982 May 7;216(4546):581-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6280281" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Dna ; Dactinomycin ; Hydrogen Bonding ; Magnetic Resonance Spectroscopy ; Motion ; Netropsin ; *Nucleic Acid Conformation ; Oligodeoxyribonucleotides ; Protons ; Structure-Activity Relationship ; Temperature
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    Herpes simplex virus type-1 glycoprotein D gene: nucleotide sequence and expression in Escherichia coli (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-10-22
    Description: The protein coding region of the herpes simplex virus type-1 glycoprotein D (gD) gene was mapped, and the nucleotide sequence was determined. The predicted amino acid sequence of the gD polypeptide was found to contain a number of features in common with other virus glycoproteins. Insertion of this protein coding region into a bacterial expressor plasmid enabled synthesis in Escherichia coli of an immunoreactive gD-related polypeptide. The potential of this system for preparation of a type-common herpes simplex virus vaccine is discussed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watson, R J -- Weis, J H -- Salstrom, J S -- Enquist, L W -- New York, N.Y. -- Science. 1982 Oct 22;218(4570):381-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6289440" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antigens, Viral/genetics ; Base Sequence ; Escherichia coli/genetics ; Gene Expression Regulation ; Genes ; Genes, Viral ; Glycoproteins/*genetics ; Peptides/genetics ; Protein Sorting Signals ; Simplexvirus/*genetics ; Viral Proteins/*genetics/immunology ; Viral Vaccines
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Specific chromosome defect associated with human small-cell lung cancer; deletion 3p(14-23) (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-01-08
    Description: A specific, acquired chromosomal abnormality (deletion 3p) has been found in at least one chromosome 3 in 100 percent of the metaphases in 12 of 12 cell lines cultured from human small-cell lung cancer tissue and in 2-day tumor culture specimens from three patients. Analysis of the shortest region of overlap shows the deletion to be 3p(14-23). This specific change was not seen in five of five lung cancer cell lines other than small-cell lung cancer or in two lymphoblastoid lines cultured from cells of small-cell lung cancer patients whose tumors had the 3p deletion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Whang-Peng, J -- Kao-Shan, C S -- Lee, E C -- Bunn, P A -- Carney, D N -- Gazdar, A F -- Minna, J D -- New York, N.Y. -- Science. 1982 Jan 8;215(4529):181-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6274023" target="_blank"〉PubMed〈/a〉
    Keywords: Carcinoma, Small Cell/*genetics ; Cells, Cultured ; *Chromosome Deletion ; Chromosomes, Human, 1-3 ; Humans ; Karyotyping ; Lung Neoplasms/*genetics
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    High efficiency latency and activation of herpes simplex virus in human cells (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-09-17
    Description: Herpes simplex virus (HSV) exists in humans in a latent form that can be activated. To characterize the molecular basis of the cell-virus interactions and to analyze the state of the latent HSV genome, an in vitro model system was established. In this system a large fraction of the latently infected cells contain an HSV genome that can be activated. Cell survival was reduced minimally after repression of high multiplicity HSV type 1 (HSV-1) infection of human fibroblast cells with (E)-5-(2-bromovinyl)-2'-deoxyuridine in combination with human leukocyte interferon (IFN-alpha). A minimum of 1 to 3 percent of the surviving cells contained an HSV genome that could be activated either by human cytomegalovirus superinfection or reduction in incubation temperature.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wigdahl, B L -- Scheck, A C -- De Clercq, E -- Rapp, F -- CA 09124/CA/NCI NIH HHS/ -- CA 18450/CA/NCI NIH HHS/ -- CA 27503/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1982 Sep 17;217(4565):1145-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6180477" target="_blank"〉PubMed〈/a〉
    Keywords: Bromodeoxyuridine/analogs & derivatives/therapeutic use ; Cells, Cultured ; Cytarabine/pharmacology ; Herpes Simplex/*physiopathology/therapy ; Humans ; Interferons/therapeutic use ; Simplexvirus/*physiology ; Virus Activation ; *Virus Replication/drug effects
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    Diverse mechanisms in the generation of human beta-tubulin pseudogenes (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-08-06
    Description: The sequence of two human beta-tubulin pseudogenes is described. One contains an intervening sequence but lacks sequences encoding the 55 N-terminal amino acids of the polypeptide chain. A second has no introns but has a polyadenylate signal and an oligoadenylate tract at its 3' end, and it is flanked by a short direct repeat. These sequences have arisen by different mechanisms, including one that probably involves reverse transcription of a processed messenger RNA and reintegration of the complementary DNA copy into the genome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilde, C D -- Crowther, C E -- Cowan, N J -- GM26456/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1982 Aug 6;217(4559):549.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6178164" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA/analysis ; DNA Restriction Enzymes ; DNA Transposable Elements ; DNA, Recombinant ; *Gene Expression Regulation ; Humans ; Nucleic Acid Hybridization ; Poly A/genetics ; RNA Splicing ; RNA-Directed DNA Polymerase/metabolism ; Recombination, Genetic ; Tubulin/*genetics
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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)
    Details
    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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    How conversational are genes? (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-04-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berg, P -- Kornberg, R -- New York, N.Y. -- Science. 1981 Apr 17;212(4492):313-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209530" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; *Gene Expression Regulation ; *Genes ; RNA, Messenger/metabolism
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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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    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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    Suppressible four-base glycine and proline codons in yeast (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-04-24
    Description: Five ICR-170--induced mutations at the His4 locus in yeast are +1 G.C (G, guanine; C, cytosine) additions in DNA regions that contain multiple G.C base pairs. These mutations represents both nonsuppressible and suppressible alleles. All externally, suppressible frameshift mutations occur in glycine and proline codons to produce the four-base codons GGGU (U, uracil), GGGG, and CCCU. This implies that suppression of these four-base codons in yeast, as in bacteria, involves a four-base anticodon or its functional equivalent. Two identical four-base codons (CCCU) at widely separate regions with His4 are not suppressed equally.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Donahue, T F -- Farabaugh, P J -- Fink, G R -- New York, N.Y. -- Science. 1981 Apr 24;212(4493):455-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7010605" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; *Codon ; DNA, Fungal/genetics ; Glycine/*genetics ; Histidine/genetics ; Mutation ; Proline/*genetics ; *RNA, Messenger ; Saccharomyces cerevisiae/*genetics ; *Suppression, Genetic
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  • 80
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    DNA sequence of two closely linked human leukocyte interferon genes (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-06-05
    Description: A single recombinant lambda bacteriophage isolated from a human genome library contains two closely related human interferon genes of the leukocyte or alpha type. The two genes are separated by 12 kilobase pairs and are oriented in the same direction with respect to transcription. Comparisons of the DNA sequences of these two genes and interferon complementary DNA clones indicate that the two interferon genes lack intervening sequences.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lawn, R M -- Adelman, J -- Dull, T J -- Gross, M -- Goeddel, D -- Ullrich, A -- New York, N.Y. -- Science. 1981 Jun 5;212(4499):1159-62.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6165082" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteriophage lambda/genetics ; Base Sequence ; DNA Restriction Enzymes ; DNA, Recombinant/*metabolism ; *Genes ; Humans ; Interferons/*genetics ; Transcription, Genetic
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    Biggest challenge since the double helix (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-04-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1981 Apr 3;212(4490):28-30, 32.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209514" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Cell Differentiation ; Chromatin/genetics ; DNA/genetics ; *Gene Expression Regulation ; Genes ; Operon ; RNA, Messenger/metabolism ; Ribonucleoproteins/genetics ; Transcription, Genetic
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  • 82
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    Elastin fragments attract macrophage precursors to diseased sites in pulmonary emphysema (1981)
    American Association for the Advancement of Science (AAAS)
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    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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  • 83
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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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  • 84
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    Reactivation of an inactive human X chromosome: evidence for X inactivation by DNA methylation (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-01-23
    Description: A mouse-human somatic cell hybrid clone, deficient in hypoxanthine-guanine phosphoribosyltransferase (HPRT) and containing a structurally normal inactive human X chromosome, was isolated. The hybrid cells were treated with 5-azacytidine and tested for the reactivation and expression of human X-linked genes. The frequency of HPRT-positives clones after 5-azacytidine treatment was 1000-fold greater than that observed in untreated hybrid cells. Fourteen independent HPRT-positive clones were isolated and analyzed for the expression of human X markers. Isoelectric focusing showed that the HPRT expressed in these clones is human. One of the 14 clones expressed human glucose-6-phosphate dehydrogenase and another expressed human phosphoglycerate kinase. Since 5-azacytidine treatment results in hypomethylation of DNA, DNA methylation may be a mechanism of human X chromosome inactivation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mohandas, T -- Sparkes, R S -- Shapiro, L J -- HD-04612/HD/NICHD NIH HHS/ -- HD-05615/HD/NICHD NIH HHS/ -- HD-12178/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1981 Jan 23;211(4480):393-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6164095" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Azacitidine/*pharmacology ; Base Sequence ; Cell Differentiation ; DNA/*metabolism ; Female ; Gene Expression Regulation/*drug effects ; Glucosephosphate Dehydrogenase/genetics ; Humans ; Hybrid Cells/physiology ; Hypoxanthine Phosphoribosyltransferase/genetics ; Methylation ; Mice ; *Sex Chromosomes ; *X Chromosome
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  • 85
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    Plasmid DNA in Treponema pallidum (Nichols): potential for antibiotic resistance by syphilis bacteria (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-07-31
    Description: A plasmid DNA structure (approximate molecular weight = 7.5 X 10(6)) was identified in the human pathogen Treponema pallidum (Nichols). The inability to isolate this plasmid from rabbit host tissue and the total lack of DNA homology of the plasmid with rabbit DNA has confirmed its Treponema pallidum origin. The observation documents a newly recognized and potentially significant genetic capability for Treponema pallidum.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Norgard, M V -- Miller, J N -- NIAID-12601/AI/NIAID NIH HHS/ -- NIAID-16692/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 31;213(4507):553-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6264606" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; DNA Restriction Enzymes ; DNA, Bacterial/*genetics ; DNA, Recombinant/metabolism ; Drug Resistance, Microbial ; Microscopy, Electron ; Molecular Weight ; Nucleic Acid Hybridization ; *Plasmids ; Protein Biosynthesis ; Rabbits ; Treponema pallidum/*genetics
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  • 86
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    Secondary structure of 16S ribosomal RNA (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-04-24
    Description: A secondary structure model for 16S ribosomal RNA which is based on available chemical, enzymatic, and comparative sequence data shows good agreement between constraints dictated by the model and a wide variety of experimental observations. The four major structural domains created by the base-pairing scheme correspond closely to RNA fragments isolated after nuclease digestion in the presence of bound ribosomal proteins. Functionally important sites appear to be located in unpaired regions and are phylogenetically highly conserved.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Noller, H F -- Woese, C R -- GM 17129/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1981 Apr 24;212(4493):403-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6163215" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Binding Sites ; Biological Evolution ; Escherichia coli/ultrastructure ; Hydrogen Bonding ; Nucleic Acid Conformation ; Protein Binding ; *RNA, Bacterial ; *RNA, Ribosomal ; Ribonucleases/metabolism ; Ribosomal Proteins/metabolism ; Ribosomes/*ultrastructure ; Substrate Specificity
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  • 87
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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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  • 88
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    Compartmentalization of cyclic AMP during phagocytosis by human neutrophilic granulocytes (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    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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  • 89
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    Polymorphism in the 5'-flanking region of the human insulin gene and its possible relation to type 2 diabetes (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-09-04
    Description: The arrangement of the human insulin gene in DNA from 87 individuals was analyzed by the Southern blot hybridization technique with a cloned genomic human insulin probe. Insertions of 1.5 to 3.4 kilobase pairs in the 5'-flanking region of the gene were found in DNA from 38 individuals. These insertions occurred within 1.3 kilobase pairs of the transcription initiation site. In contrast, no insertions were observed in the region 3' to the coding sequence. The prevalence of these insertions in type 2 diabetes was significantly greater than in the other groups (P less than .001). The limitation of this striking length polymorphism to a potential promoter region suggests that these insertions may play a role in insulin gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rotwein, P -- Chyn, R -- Chirgwin, J -- Cordell, B -- Goodman, H M -- Permut, M A -- AM-00033/AM/NIADDK NIH HHS/ -- AM-07120/AM/NIADDK NIH HHS/ -- AM-16724/AM/NIADDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1981 Sep 4;213(4512):1117-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6267694" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA Restriction Enzymes ; Diabetes Mellitus/*genetics ; Gene Expression Regulation ; Genes ; Genetic Linkage ; Humans ; Insulin/*genetics ; Leukocytes ; Operon ; Polymorphism, Genetic
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  • 90
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    Lectins mimic insulin in the induction of tyrosine aminotransferase (1981)
    American Association for the Advancement of Science (AAAS)
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    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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  • 91
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    Biology of hepatitis B virus (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-07-24
    Description: Immunochemical investigations of the viral antigens and molecular characterization of the viral DNA have elucidated the nature of the hepatitis B virus infection underlying acute, chronic, and oncogenic disorders of the liver in man. Cloning and sequencing of viral DNA have made possible studies on the structure of the genome and on certain aspects of the biology of the virus, hitherto constrained for a lack of tissue culture systems and laboratory animal models useful in its propagation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tiollais, P -- Charnay, P -- Vyas, G N -- New York, N.Y. -- Science. 1981 Jul 24;213(4506):406-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6264599" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cloning, Molecular ; DNA Restriction Enzymes ; Genes, Viral ; Hepatitis B/microbiology ; Hepatitis B Surface Antigens/*analysis ; Hepatitis B virus/*genetics/immunology ; Humans ; Viral Proteins
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  • 92
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    Plasmodium falciparum gametocytes from culture in vitro develop to sporozoites that are infectious to primates (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-09-10
    Description: Gametocytes of two strains of the human malaria parasite Plasmodium falciparum have been produced in high density by means of a continuous-flow cultivation system. The gametocytes of these two strains infected a mean of 36 percent and 71 percent, respectively, of Anopheles freeborni mosquitoes that fed on a suspension of red blood cells containing the culture gametocytes. Sporozoites harvested from the infected mosquito salivary glands were infective to the chimpanzee (Pan troglodytes) and the owl monkey (Aotus trivirgatus).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Campbell, C C -- Collins, W E -- Nguyen-Dinh, P -- Barber, A -- Broderson, J R -- New York, N.Y. -- Science. 1982 Sep 10;217(4564):1048-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7051285" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anopheles/parasitology ; Aotus trivirgatus/parasitology ; Blood/parasitology ; Cells, Cultured ; Culture Media ; Humans ; Pan troglodytes/parasitology ; Plasmodium falciparum/*growth & development ; Salivary Glands/parasitology
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  • 93
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    Nerve fiber growth on defined hydrogel substrates (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-05-21
    Description: Cultured neurons become attached to hydrogel substrates prepared from 2-hydroxyethylmethacrylate but grow few nerve fibers unless fibronectin, collagen, or nerve growth factor is incorporated into the hydrogel. Antibodies to fibronectin inhibit nerve fiber growth on hydrogels containing fibronectin, which suggests that growing neurons interact directly with proteins trapped in the hydrogel. The adhesive requirements for attachment of neurons appear distinct and possibly less specific than those for fiber growth. Defined hydrogel substrates offer a controlled method for analyzing complex substrates that support nerve fiber growth and neuronal differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carbonetto, S T -- Gruver, M M -- Turner, D C -- 2S07RR0540220/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1982 May 21;216(4548):897-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7079743" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Adhesion ; Cell Differentiation ; Cells, Cultured ; Chick Embryo ; Collagen/pharmacology ; Culture Media ; Fibronectins/pharmacology ; Nerve Growth Factors/pharmacology ; Neurons/*cytology ; *Polyhydroxyethyl Methacrylate ; *Polymethacrylic Acids
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  • 94
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    Induction of crisis forms in cultured Plasmodium falciparum with human immune serum from Sudan (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-06-11
    Description: Serums from 90 individuals from three areas in Sudan were tested for inhibitory activity against cultures of Plasmodium falciparum. In addition to inhibitory activity against merozoite invasion, all of the serums demonstrated, in varying degrees, the ability to retard intraerythrocyte development, leading to crisis forms and parasite deterioration. These retardation factors could be removed by absorption of immune serum with parasite-infected erythrocytes and were demonstrable in purified immunoglobulin fractions. Serum from donors in hypoendemic Khartoum did not retard parasite development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jensen, J B -- Boland, M T -- Akood, M -- AI-16312/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1982 Jun 11;216(4551):1230-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7043736" target="_blank"〉PubMed〈/a〉
    Keywords: Antibodies ; Antigens ; Cells, Cultured ; Erythrocytes/immunology/*parasitology ; Humans ; Immunity ; Malaria/*immunology ; Plasmodium falciparum/growth & development/*immunology/physiology ; Sudan
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  • 95
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    Monoclonal antibody to 5-bromo- and 5-iododeoxyuridine: A new reagent for detection of DNA replication (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-10-29
    Description: Monoclonal antibodies specific for 5-bromodeoxyuridine have been produced and applied in detecting low levels of DNA replication on a cell-by-cell basis in vitro. The immunoglobulin-producing hybridomas were derived from spleen cells of mice immunized with a conjugate of iodouridine and ovalbumin. The cells were fused with the plasmacytoma line SP2/0Ag14. The antibodies produced are highly specific for bromodeoxyuridine and iododeoxyuridine and do not cross-react with thymidine. DNA synthesis in cultured cells exposed to bromodeoxyuridine for as short a time as 6 minutes can be detected easily and rapidly by an immunofluorescent staining method and quantitated by flow cytometry.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gratzner, H G -- 5R26CA-15480-09/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1982 Oct 29;218(4571):474-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123245" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; Bromodeoxyuridine/*analysis/immunology ; Cells, Cultured ; *DNA Replication ; Flow Cytometry ; Idoxuridine/*analysis/immunology ; Mice
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  • 96
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    Expression of bovine leukemia virus genome is blocked by a nonimmunoglobulin protein in plasma from infected cattle (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-01-22
    Description: Plasma of cattle infected with bovine leukemia virus contains a soluble factor that blocks the expression of the viral genome in cultured lymphocytes. The blocking factor is not present in plasma of bovine leukemia virus-free cattle or of cattle infected with common bovine viruses. Blocking of bovine leukemia virus expression by the plasma factor is reversible, and seems to be mediated by a nonimmunoglobulin protein molecule.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gupta, P -- Ferrer, J F -- 3 PO1-CA14193/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1982 Jan 22;215(4531):405-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6276975" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Proteins/pharmacology ; Cattle ; Cattle Diseases/*blood ; Cells, Cultured ; Gene Expression Regulation/drug effects ; Leukemia/*blood ; Leukemia Virus, Bovine/*genetics ; Lymphocytes/microbiology ; Retroviridae/*genetics ; Viral Proteins/biosynthesis/genetics ; Virus Replication
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  • 97
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    Corticotropin-releasing activity of alpha-melanotropin (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-02-05
    Description: Synthetic alpha-melanotropin stimulated the release of immunoreactive adrenocorticotropin from primary cultures of rat anterior pituitary cells. The effect of the alpha-melanotropin was dose-dependent. Cells incubated with synthetic arginine-vasopressin and alpha-melanotropin simultaneously produced an amount of adrenocorticotropin that was greater than the sum of the amount that the cells produced in response to each peptide added separately. Other peptides structurally similar to alpha-melanotropin, such as, beta-, gamma 1-, gamma 2-, and gamma 3-melanotropin, were also tested for adrenocorticotropin-releasing activity. Only the gamma 3-melanotropin demonstrated a statistically significant effect. A vasopressin preparation (Pitressin, Parke-Davis) purified from posterior pituitaries and previously shown to contain some alpha-melanotropin was much more potent in releasing adrenocorticotropin than the synthetic vasopressin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lis, M -- Julesz, J -- Gutkowska, J -- Genest, J -- New York, N.Y. -- Science. 1982 Feb 5;215(4533):675-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6276977" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenocorticotropic Hormone/*secretion ; Animals ; Arginine Vasopressin/pharmacology ; Cells, Cultured ; Drug Synergism ; Hormones/pharmacology ; Melanocyte-Stimulating Hormones/*pharmacology ; Pituitary Gland/*secretion ; Rats ; Secretory Rate/drug effects
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 98
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    Human beta-globin gene sequences injected into mouse eggs, retained in adults, and transmitted to progeny (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-09-10
    Description: Foreign gene sequences were retained in two adult mice (out of 62 analyzed) from fertilized eggs injected with a recombinant plasmid containing the human beta-globin genomic region and the herpes simplex viral thymidine kinase gene. The intact human and viral genes were found in DNA of one of the animals and, in the other, at least part of the human globin gene was present. The latter individual transmitted these sequences to its progeny in a Mendelian ration. Thus, human DNA may be incorporated into the germ line of mice for in vivo studies of regulation of gene expression in development, genetic diseases, and malignancy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Steward, T A -- Wagner, E F -- Mintz, B -- CA-60927/CA/NCI NIH HHS/ -- HD-01646/HD/NICHD NIH HHS/ -- RR-05539/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1982 Sep 10;217(4564):1046-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6287575" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; DNA/genetics ; DNA Restriction Enzymes ; DNA, Recombinant ; Female ; Genes ; Genes, Viral ; Germ Cells ; Globins/*genetics ; Humans ; Mice ; Microinjections ; Nucleic Acid Hybridization ; *Recombination, Genetic ; Simplexvirus/enzymology ; Thymidine Kinase/genetics ; Zygote
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 99
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    Viral receptors on isolated murine and human ependymal cells (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-01-22
    Description: Viruses that infect ependyma cause ependymitis in humans and hydrocephalus in experimental animals. We report that reovirus type 1 (which induces hydrocephalus in mice) binds to the surface of isolated human and murine ciliated ependymal cells. With the use of recombinant viral clones, the binding property was mapped to the type 1 viral hemagglutinin, which also determines in vivo the affinity of reovirus type 1 for ependyma. Mumps virus, measles virus, parainfluenza type 3, and herpes simplex virus type 1 bind to murine ependyma cells, whereas reovirus type 3, herpes simplex virus type 2, and poliovirus type 2 do not.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tardieu, M -- Weiner, H L -- 1K07-NS00237/NS/NINDS NIH HHS/ -- NSAI-16998/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Jan 22;215(4531):419-21.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6276976" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Ependyma/*metabolism/microbiology ; Hemagglutinins, Viral/metabolism ; Humans ; Hydrocephalus/microbiology ; Measles virus/metabolism ; Mice ; Mumps virus/metabolism ; Parainfluenza Virus 3, Human/metabolism ; Receptors, Virus/*metabolism ; Reoviridae/*metabolism ; Simplexvirus/metabolism
    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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  • 100
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    Transposition of cloned P elements into Drosophila germ line chromosomes (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-10-22
    Description: Recombinant DNA carrying the 3-kilobase transposable element was injected into Drosophila embryos of a strain that lacked such elements. Under optimum conditions, half of the surviving embryos showed evidence of P element-induced mutations in a fraction of their progeny. Direct analysis of the DNA of strains derived from such flies showed them to contain from one to five intact 3-kilobase P elements located at a wide variety of chromosomal sites. DNA sequences located outside the P element on the injected DNA were not transferred. Thus P elements can efficiently and selectively transpose from extrachromosomal DNA to the DNA of germ line chromosomes in Drosophila embryos. These observations provide the basis for efficient DNA-mediated gene transfer in Drosophila.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spradling, A C -- Rubin, G M -- New York, N.Y. -- Science. 1982 Oct 22;218(4570):341-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6289435" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chromosome Mapping ; *DNA Transposable Elements ; Drosophila melanogaster/*genetics ; Female ; Genes ; Genetic Linkage ; Hybridization, Genetic ; Male ; *Mutation ; Nucleic Acid Hybridization ; Recombination, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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