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  • Articles  (187)
  • Life and Medical Sciences  (95)
  • Humans  (92)
  • Lunar and Planetary Science and Exploration
  • ASTROPHYSICS
  • 1985-1989  (187)
  • 1955-1959
  • 1985  (187)
Collection
Source
Keywords
Publisher
Years
  • 1985-1989  (187)
  • 1955-1959
Year
Journal
Topic
  • 1
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    The neu gene: an erbB-homologous gene distinct from and unlinked to the gene encoding the EGF receptor (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-09-06
    Description: The neu oncogene, identified in ethylnitrosourea-induced rat neuroglioblastomas, had strong homology with the erbB gene that encodes the epidermal growth factor receptor. This homology was limited to the region of erbB encoding the tyrosine kinase domain. It was concluded that the neu gene is a distinct novel gene, as it is not coamplified with sequences encoding the EGF receptor in the genome of the A431 tumor line and it maps to human chromosome 17.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schechter, A L -- Hung, M C -- Vaidyanathan, L -- Weinberg, R A -- Yang-Feng, T L -- Francke, U -- Ullrich, A -- Coussens, L -- CA 39964-01/CA/NCI NIH HHS/ -- GM 26105/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Sep 6;229(4717):976-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2992090" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Neoplasm/*genetics ; Chromosome Mapping ; Chromosomes, Human, 16-18 ; DNA, Neoplasm/*genetics ; Genes ; Genetic Linkage ; Humans ; Neoplasm Proteins/*genetics ; Neuroblastoma/genetics ; Neuroglia ; *Oncogenes ; Rats ; Receptor, Epidermal Growth Factor ; Receptors, Cell Surface/*genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Selective extraction of small and large molecules from the cerebrospinal fluid by Purkinje neurons (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-04-19
    Description: Cerebellar Purkinje neurons accumulated propidium iodide, granular blue, and horseradish peroxidase conjugated to wheat germ agglutinin but not unconjugated horseradish peroxidase, bisbenzimide, or Evans blue when these compounds were infused into the lateral cerebral ventricles of awake, unrestrained rats. Accumulation of propidium iodide by Purkinje neurons of the vermis was associated with a reproducible behavioral abnormality characterized by truncal tremor, ataxia, and nystagmus. Both the accumulation of propidium iodide in Purkinje cells and the behavioral abnormality were prevented by prior intracerebroventricular administration of ouabain or colchicine, drugs that block neuronal transport processes. The ability of cerebellar Purkinje neurons to extract small and large molecules from the cerebrospinal fluid has important implications for their physiology and pathology.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Borges, L F -- Elliott, P J -- Gill, R -- Iversen, S D -- Iversen, L L -- New York, N.Y. -- Science. 1985 Apr 19;228(4697):346-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2580350" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bisbenzimidazole/metabolism ; Cerebrospinal Fluid/*physiology ; Dendrites/physiology ; Evans Blue/metabolism ; Horseradish Peroxidase/metabolism ; Humans ; Male ; Propidium/metabolism/pharmacology ; Purkinje Cells/*metabolism/physiology ; Rats ; Rats, Inbred Strains ; Tremor/chemically induced/physiopathology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    Expression of Plasmodium falciparum circumsporozoite proteins in Escherichia coli for potential use in a human malaria vaccine (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-24
    Description: The circumsporozoite (CS) protein of the human malaria parasite Plasmodium falciparum may be the most promising target for the development of a malaria vaccine. In this study, proteins composed of 16, 32, or 48 tandem copies of a tetrapeptide repeating sequence found in the CS protein were efficiently expressed in the bacterium Escherichia coli. When injected into mice, these recombinant products resulted in the production of high titers of antibodies that reacted with the authentic CS protein on live sporozoites and blocked sporozoite invasion of human hepatoma cells in vitro. These CS protein derivatives are therefore candidates for a human malaria vaccine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Young, J F -- Hockmeyer, W T -- Gross, M -- Ballou, W R -- Wirtz, R A -- Trosper, J H -- Beaudoin, R L -- Hollingdale, M R -- Miller, L H -- Diggs, C L -- New York, N.Y. -- Science. 1985 May 24;228(4702):958-62.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2988125" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antibody Formation ; Antigens, Surface/genetics/*immunology ; Carcinoma, Hepatocellular ; Cell Line ; Cloning, Molecular ; Cross Reactions ; DNA, Recombinant ; Escherichia coli/genetics ; Humans ; Liver Neoplasms ; Malaria/*prevention & control ; Mice ; Plasmodium/immunology ; Plasmodium falciparum/genetics/*immunology/physiology ; *Protozoan Proteins ; Vaccines/*immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Induction of AIDS-like disease in macaque monkeys with T-cell tropic retrovirus STLV-III (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-10-04
    Description: The T-cell tropic retrovirus of macaque monkeys STLV-III has morphologic, growth, and antigenic properties indicating that it is related to HTLV-III/LAV, the etiologic agent of the acquired immune deficiency syndrome (AIDS) in humans. Four of six rhesus monkeys died within 160 days of STLV-III inoculation with a wasting syndrome, opportunistic infections, a primary retroviral encephalitis, and immunologic abnormalities including a decrease in T4+ peripheral blood lymphocytes. These data show that an immunodeficiency syndrome can be produced experimentally in a nonhuman primate by an agent from the HTLV-III/LAV group of retroviruses. The STLV-III-macaque system will thus provide a useful model for the study of antiviral agents and vaccine development for human AIDS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Letvin, N L -- Daniel, M D -- Sehgal, P K -- Desrosiers, R C -- Hunt, R D -- Waldron, L M -- MacKey, J J -- Schmidt, D K -- Chalifoux, L V -- King, N W -- AI 20729/AI/NIAID NIH HHS/ -- CA 34979/CA/NCI NIH HHS/ -- CA 38205/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1985 Oct 4;230(4721):71-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2412295" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*microbiology/pathology ; Animals ; Brain/pathology ; Deltaretrovirus ; *Disease Models, Animal ; Epitopes/analysis ; Humans ; Interleukin-2 ; Leukocyte Count ; Lymphocyte Activation ; Macaca mulatta ; Microscopy, Electron ; Pancreas/pathology ; *Retroviridae ; T-Lymphocytes/immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Electronic Resource
    Electronic Resource
    Binding and internalization of heparin by vascular smooth muscle cells (1985)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 124 (1985), S. 13-20 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Previous work from our laboratory has demonstrated that heparin specifically inhibits the proliferation of vascular smooth muscle cells in vivo and in vitro. In this paper, we examine the binding and mode of internalization of heparin by smooth muscle cells. For these studies, radiolabeled and fluoresceinated (FITC) heparin probes were synthesized that retained their antiproliferative capacity. Binding of 3H-heparin to these cells occurs via specific, high-affinity binding sites (Kd = 10-9 M, 100,000 binding sites per cell). Approximately 80% of the heparin bound to the cell surface was shed into the culture medium within 2 hr. The heparin that was left on the cell surface was internalized with biphasic kinetics. Approximately 50% of the bound material was internalized within 2 hr. After this initial rapid uptake, the rate slowed substantially, with the remaining heparin requiring 1-2 days to be internalized. Binding and uptake of FITC heparin was monitored using video image intensification fluorescence microscopy. When smooth muscle cells were exposed to FITC heparin at 4°C, a diffuse surface staining pattern was observed. After warming the cells to 37°C, intensely fluorescent vesicles were seen superimposed over the diffuse surface staining within 2 min. After 15 min at 37°C, numerous large punctate vesicles were seen inside the cell. After 2 hr these vesicles had concentrated in the perinuclear region. This pattern of uptake, when considered along with the presence of specific, high-affinity binding sites and the initial rapid uptake of 3H-heparin, suggests that heparin enters smooth muscle cells by both receptor-mediated and other endocytic pathways.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1041240104
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  • 6
    Electronic Resource
    Electronic Resource
    Hormonal control of cholesterogenesis and related enzymes in isolated rat hepatocytes during pre- and postnatal development (1985)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 125 (1985), S. 507-511 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The effect of glucagon and insulin on the incorporation of 1-14C-acetate into cholesterol and fatty acids and on the enzymes involved in the first steps of cholesterol synthesis (3-hydroxy-3-methyl-glutaryl-coenzyme A reductase, 3-hydroxy-3-methyl-glutaryl-coenzyme A synthase, and acetoacetyl-coenzyme A thiolase) was investigated. Isolated rat hepatocytes at different stages of fetal and postnatal development were employed. Data obtained show the appearance of hormonal control on the 18th day of fetal life, indicating the same pattern, as regards acetate incorporation and HMGCoA reductase prepared and assayed in the presence of NaF. On the contrary, HMGCoA reductase, prepared without NaF, HMGCoA synthase, and acetoacetyl CoA thiolase, does not appear to respond to hormonal stimulation. In the perinatal period, the hormonal effect is no longer detectable, probably because of a hormone resistance of this metabolic pathway.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1041250321
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  • 7
    Electronic Resource
    Electronic Resource
    Differentiation in Acanthamoeba castellanii is induced by specific monoclonal antibodies (1985)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 29 (1985), S. 373-379 
    Details
    ISSN: 0730-2312
    Keywords: encystment induction ; Acanthamoeba castellanii ; pinocytotic inhibition ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Monoclonal antibodies that bind a large molecular weight plasma membrane protein of Acanthamoeba castellanii cause the cells to differentiate. A different monoclonal antibody that binds specifically to the major plasma membrane protein has no effect upon cell division or differentiation. The induction of differentiation by the monoclonal antibodies requires a bivalent attachment, more than a single binding cycle of the antibody to the plasma membrane protein, does not require cell-cell contact, and appears to be mediated by an inhibition of pinocytosis. These results suggest one of two alternatives: either (1) this free living amoeba possesses a cell surface receptor that serves to initiate the differentiation process when stimulated, or (2) the specific plasma membrane antigen for the differentiation-inducing monoclonal antibodies is an essential component of the pinocytotic mechanism. While it seems more likely on the basis of available evidence that we are observing the biological effects of a cell surface receptor, either of the two alternative circumstances open up investigative areas of large significance.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcb.240290410
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  • 8
    Electronic Resource
    Electronic Resource
    Enzymes converting procollagens to collagens (1985)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 28 (1985), S. 15-21 
    Details
    ISSN: 0730-2312
    Keywords: procollagen conversion ; amino-terminal proteinases ; carboxy-terminal proteinases ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Conversion from procollagen to collagen is a specific process that is a requirement for proper alignment of collagen molecules to form functional fibers. This process is catalyzed by at least three structurally and functionally distinct enzymes cleaving collagen types I-III. The cleavage processes possibly taking place in the more recently discovered collagen types are not known to any extent at this time.Two amino-terminal proteinases, one cleaving type I and type II procollagens and the other cleaving type III procollagen, have been purified close to homogeneity, and the more unspecific activity of carboxy-terminal proteinase has been isolated from several tissues. In our experimental model, however, cleavage of the carboxy-terminal propeptides of types I and III procollagen is differently affected by lysine. This suggests the presence of at least two distinct enzymes for the removal of carboxyl-terminal propeptides.The regulation of the reaction process from procollagen to collagen is not well known at present. The importance of the phenomenon in terms of fibril formation, however, is demonstrated by several elegant studies in vitro; and certain genetic disorders in which this process is defective demonstrate the significance in vivo. Moreover, the factors shown to effect the cleavage process may be potentially beneficial in the treatment of the pathological processes with abnormal collagen accumulation such as fibrosis.In this paper we briefly review the current knowledge of the converting enzymes, including some very recent findings of our laboratory as well as the evidence presented for the biological significance of the conversion process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcb.240280104
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  • 9
    Electronic Resource
    Electronic Resource
    Cell surface galactosyltransferase: Immunochemical localization (1985)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 28 (1985), S. 229-239 
    Details
    ISSN: 0730-2312
    Keywords: cell surface ; galactosyltransferase ; immunochemical localization ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: A cell surface UDP-galactose:N-acetylglucosamine galactosyltransferase (GT) has been directly localized on bovine cells in tissue culture by immunohistochemical techniques. A conventional rabbit heteroantiserum was prepared against an affinity-purified soluble form of GT from bovine milk, and a monospecific IgG fraction was isolated by affinity chromatography on a GT adsorbent. As demonstrated by indirect immunofluorescence, antigen to this antibody is present on the surface of all three bovine cell lines tested. It was uniformly distributed over the exposed membrane surface of fixed cells. Exposure of living cells to the anti-GT antibody resulted in its time-dependent aggregation in the plane of the membrane. Antigen (GT) was released from the membrane surface by trypsin digestion, and its reappearance required protein synthesis, since cycloheximide effectively prevented repopulation of the cell surface.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcb.240280305
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  • 10
    Electronic Resource
    Electronic Resource
    The change in the nucleus pattern during chromatin condensation in Eurygaster integriceps spermatids (1985)
    New York, NY : Wiley-Blackwell
    Gamete Research 11 (1985), S. 421-429 
    Details
    ISSN: 0148-7280
    Keywords: spermatid ; nucleus ; bug ; ultrastructure ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: When spermiogenesis of Eurygaster integriceps occurs, the pattern of the round nucleus of the spermaiid changes under the influence of a manchette consisting of two large groups of microtubules (up to 130-140 in each). The pericentriolar matter was found to be involved in the changes in the nuclear pattern; it takes part in the formation of the asymmetric intranuclear channel, open at one side. Two zones appear in the nucleus that differ greatly in their rates of chromatin condensation. The two main parts of the future nucleus are thereby established: the apical one with a greater rate of chromatin condensation, which gives origin to the two-walled cylinder, and the outer part, which grows for a long time and extends caudally to the middle piece. At the later stages of nucleus formation, when its larger part is separated from the surface of the middle piece, the vesicles of the endoplasmic reticulum that penetrate between the Nebenkern and the larger part of the nucleus, play a certain role.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1120110409
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