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  • Mice  (163)
  • American Association for the Advancement of Science (AAAS)  (163)
  • American Institute of Physics
  • Annual Reviews
  • Blackwell Publishing Ltd
  • Elsevier
  • 2005-2009
  • 1985-1989  (84)
  • 1980-1984  (79)
  • 1940-1944
  • 1987  (84)
  • 1981  (79)
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  • American Association for the Advancement of Science (AAAS)  (163)
  • American Institute of Physics
  • Annual Reviews
  • Blackwell Publishing Ltd
  • Elsevier
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Erscheinungszeitraum
  • 2005-2009
  • 1985-1989  (84)
  • 1980-1984  (79)
  • 1940-1944
Jahr
  • 1
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    Testosterone: a major determinant of extragenital sexual dimorphism (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-03-20
    Beschreibung: Sexual dimorphism in selected extragenital tissues is described with emphasis on the molecular basis of the differences. Testosterone rather than 5 alpha-dihydrotestosterone appears to be the major intracellular androgen in organs other than skin and reproductive tract, but other steroid metabolites and their receptors are required to produce the diverse tissue differences observed in males and females. There is also evidence that multiple hormones from several endocrine glands are required to act in concert with androgens to produce and maintain their effects. Although many of the consequences of sexual dimorphism, such as body size and strength, have been evident for centuries, other differences between males and females such as disease incidence, response to drugs and toxins, and the metabolism and assimilation of dietary constituents have only recently been discovered.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bardin, C W -- Catterall, J F -- HD-13541/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1981 Mar 20;211(4488):1285-94.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7010603" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Androgen-Insensitivity Syndrome/metabolism ; Androgens/metabolism/physiology ; Animals ; Erythropoiesis ; Estradiol/physiology ; Humans ; Kidney/metabolism ; Liver/metabolism ; Male ; Mice ; Muscles/metabolism ; Progestins/physiology ; Proteins/secretion ; Rats ; Receptors, Androgen/metabolism ; *Sex Differentiation ; Testosterone/metabolism/*physiology ; Transcription, Genetic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 2
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    GABA analogues activate channels of different duration on cultured mouse spinal neurons (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-04-17
    Beschreibung: Voltage-clamp recordings from mouse spinal neurons grown in culture were used to study the membrane current fluctuations induced by 12 substances structurally similar to gamma-aminobutyric acid (GABA). Fluctuation analysis provided estimates of the electrical properties of the elementary events underlying these responses. Estimates of the mean conductance of channels activated by all of the substances except glycine did not differ significantly from that estimated for GABA, whereas mean durations of agonist-activated channels all differed significantly from that found for GABA. The results indicate that all of the substances tested except glycine activate channels of similar conductance but of different durations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barker, J L -- Mathers, D A -- New York, N.Y. -- Science. 1981 Apr 17;212(4492):358-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6259733" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Membrane/drug effects ; Ion Channels/*drug effects ; Membrane Potentials/drug effects ; Mice ; Neurons/drug effects ; Receptors, Cell Surface/metabolism ; Receptors, GABA-A ; Spinal Nerves/*drug effects ; Structure-Activity Relationship ; Time Factors ; gamma-Aminobutyric Acid/*analogs & derivatives/pharmacology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 3
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    Morphiceptin (NH4-tyr-pro-phe-pro-COHN2): a potent and specific agonist for morphine (mu) receptors (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-04-03
    Beschreibung: The synthetic peptide NH2-Tyr-Pro-Phe-Pro-CONH2 (morphiceptin), which is the amide of a fragment of the milk protein beta-casein, has morphinelike activities and is highly specific for morphine (mu) receptors but not for enkephalin (delta) receptors. It is as active as morphine in the guinea pig ileum but much less active in the mouse and rat vas deferens. The discovery of this specific morphine receptor ligand substantiates the hypothesis of multiple opiate receptors. The ligand, which may be of physiological significance since a very similar, or identical, activity can be detected in enzymatic digests of beta-casein, may prove useful for further investigation of the functions of opiate receptor subtypes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chang, K J -- Lillian, A -- Hazum, E -- Cuatrecasas, P -- Chang, J K -- New York, N.Y. -- Science. 1981 Apr 3;212(4490):75-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6259732" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Binding, Competitive ; Caseins/pharmacology ; Dihydromorphine/metabolism ; Endorphins/*pharmacology ; Enkephalins/metabolism ; Guanosine Triphosphate/pharmacology ; Guinea Pigs ; Ileum/drug effects ; Male ; Mice ; Naloxone/metabolism ; Rats ; Receptors, Opioid/*drug effects ; Sodium/pharmacology ; Vas Deferens/drug effects
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 4
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    Melatonin: identification of sites of antigonadal action in mouse brain (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-11-13
    Beschreibung: Long-term implants releasing a small quantity of melatonin (45 nanograms per day) were used to determine the brain sites of the hormone's antigonadal action in a photoperiodic species, the white-footed mouse (Peromyscus leucopus). Implants in the medial preoptic and supra- and retrochiasmatic areas elicited completed gonadal regression after 7 weeks. Implants in other brain regions had little effect on the animals' reproductive state.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Glass, J D -- Lynch, G R -- NS-15503/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Nov 13;214(4522):821-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7292016" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Female ; Genitalia, Female/drug effects/*pathology ; Hypothalamus/*drug effects ; Light ; Melatonin/*pharmacology ; Mice ; Periodicity ; Preoptic Area/drug effects ; Supraoptic Nucleus/drug effects
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 5
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    Renin and angiotensin: the complete system within the neuroblastoma x glioma cell (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-11-20
    Beschreibung: Cells of the homogeneous hybrid line neuroblastoma x glioma (NG108-15) have many neuronal properties. Immunocytochemical tests show that they contain both immunoreactive renin and angiotensin; direct radioimmunoassays show that they are positive for renin, angiotensin I, and angiotensin II; enzymatic assays show that they contain angiotensinogen and converting enzyme as well. The renin appears to be present in an enzymatically inactive form that can be activated by trypsin and then blocked by antiserum to purified mouse submaxillary renin. Renin concentration and activity are increased by enhancing cellular differentiation with dibutyryl cyclic adenosine monophosphate or by serum withdrawal. These findings demonstrate a complete renin-angiotensin system within these neuron-like cells, and suggest that activation of intracellular renin could generate angiotensin II.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fishman, M C -- Zimmerman, E A -- Slater, E E -- HL-21247/HL/NHLBI NIH HHS/ -- HL-24105/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1981 Nov 20;214(4523):921-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6272392" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Angiotensin I/*analysis ; Angiotensin II/*analysis ; Angiotensins/*analysis ; Animals ; Cell Line ; Cricetinae ; Glioma/*metabolism ; Hybrid Cells/*metabolism ; Mice ; Neuroblastoma/*metabolism ; Peptidyl-Dipeptidase A/metabolism ; Radioimmunoassay ; Rats ; Renin/*metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 6
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    Phenytoin-induced teratogenesis: a mouse model (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-01-30
    Beschreibung: Malformations associated with the fetal hydantoin syndrome have been reproduced in a mouse model. The occurrence of these defects was correlated with maternal serum concentrations, but not with maternal or fetal genotype or the presence of a seizure disorder.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Finnell, R H -- New York, N.Y. -- Science. 1981 Jan 30;211(4481):483-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7455686" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Disease Models, Animal ; Epilepsy/drug therapy ; Female ; Mice ; Mice, Neurologic Mutants/physiology ; Phenytoin/*adverse effects ; *Teratogens
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 7
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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
    Publikationsdatum: 1981-04-03
    Beschreibung: 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〉
    Schlagwort(e): 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
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 8
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    Voltage clamp studies in macrophages from mouse spleen cultures (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-10-23
    Beschreibung: 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〉
    Schlagwort(e): Animals ; Barium/pharmacology ; Cell Membrane/physiology ; Cells, Cultured ; Electric Conductivity ; Macrophages/*physiology ; Membrane Potentials ; Mice ; Spleen/cytology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 9
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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
    Publikationsdatum: 1981-06-05
    Beschreibung: 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〉
    Schlagwort(e): 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
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 10
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    The AF64a-treated mouse: possible model for central cholinergic hypofunction (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-07-31
    Beschreibung: A loss in the number of functional, sodium ion-dependent, high-affinity choline transport sites was observed in the cortex and hippocampus of mice given an intracerebroventricular injection of 65 nanomoles of AF64A (ethylcholine mustard aziridinium ion) 3 days earlier. Such an effect was not observed in the striatum. This effect of AF64A represents a long-term neurochemical deficit at cholinergic nerve terminals in some brain regions which can lead to a persistent deficiency in central cholinergic transmission. The AF64A-treated animal may thus be a model for certain psychiatric or neurological disorders that appear to involve central cholinergic hypofunction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mantione, C R -- Fisher, A -- Hanin, I -- MH 26320/MH/NIMH NIH HHS/ -- MH/AG 34893/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 31;213(4507):579-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6894649" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Aziridines/*pharmacology ; Azirines/*pharmacology ; Biological Transport/drug effects ; Brain/drug effects/*metabolism ; Cerebral Cortex/metabolism ; Choline/*analogs & derivatives/*metabolism/pharmacology ; Corpus Striatum/metabolism ; Hippocampus/metabolism ; Kinetics ; Mice ; Sodium/pharmacology ; Synaptosomes/drug effects/*metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 11
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    Growth inhibition by adenosine 3',5-monophosphate derivatives does not require 3',5' phosphodiester linkage (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-09-04
    Beschreibung: Analogs of adenosine 3',5'-monophosphate (cyclic AMP) inhibit the growth of cultured cell lines. The effects of 8-bromo- and N6-butyryl-substituted analogs of cyclic and noncyclic AMP on six cell lines were examined and were equally inhibitory. Variant cell lines with altered cyclic AMP-dependent protein kinase were more resistant to both cyclic and noncyclic nucleotides. We conclude that growth inhibition by analogs of cyclic AMP (i) does not require a 3',5' phosphodiester bond and (ii) may be mediated by a pathway involving endogenous cyclic AMP.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martin, T F -- Kowalchyk, J A -- AM 25861/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Sep 4;213(4512):1120-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6267695" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Division/*drug effects ; Cell Line ; Cricetinae ; Cyclic AMP/*pharmacology ; DNA/biosynthesis ; Growth Inhibitors/*pharmacology ; Mice ; Phosphodiesterase Inhibitors/pharmacology ; Structure-Activity Relationship
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 12
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    More progress on gene transfer (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-08-28
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1981 Aug 28;213(4511):996-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6943678" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *DNA, Recombinant ; *Genetic Engineering ; Mice ; Recombination, Genetic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 13
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    Viral epitopes and monoclonal antibodies: isolation of blocking antibodies that inhibit virus neutralization (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-07-24
    Beschreibung: The inability of pathogenic animal viruses to be completely neutralized by antibodies can lead to chronic viral infections in which infectious virus persists even in the presence of excess neutralizing antibody. A mechanism that results in this nonneutralized fraction of virus was defined by the topographical relationships of viral epitopes identified with monoclonal antibodies wherein monoclonal antibodies bind to virus and sterically block the binding of neutralizing antibodies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Massey, R J -- Schochetman, G -- N01-CO-75380/CO/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 24;213(4506):447-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6264601" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Antibodies ; Antibodies, Monoclonal ; *Antigen-Antibody Complex ; Antigens, Viral ; Clone Cells ; Kirsten murine sarcoma virus/*immunology ; Mammary Tumor Virus, Mouse/*immunology ; Mice ; Sarcoma Viruses, Murine/*immunology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 14
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    Carcinogenicity in mice of mutagenic compounds from a tryptophan pyrolyzate (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-07-17
    Beschreibung: The compounds 3-amino-1,4-dimethyl-5H-pyrido[4,3-b]indole and 3-amino-1-methyl-5H-pyrido[4,3-b]indole, which are potent mutagens in a tryptophan pyrolyzate, ar hepatic carcinogens when given orally to mice at concentrations of 200 parts per million in a pellet diet. Female mice showed higher susceptibilities to both compounds than male mice.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Matsukura, N -- Kawachi, T -- Morino, K -- Ohgaki, H -- Sugimura, T -- Takayama, S -- New York, N.Y. -- Science. 1981 Jul 17;213(4505):346-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244619" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Carbolines/*pharmacology ; *Carcinogens ; Drug Evaluation, Preclinical ; Female ; Indoles/*pharmacology ; Male ; Mice ; Mice, Inbred Strains ; Mutagens/*pharmacology ; Neoplasms, Experimental/chemically induced ; Sex Factors
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 15
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    Copper deficiency suppresses the immune response of mice (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-07-31
    Beschreibung: Mice fed a purified diet low in copper display anemia, hypoceruloplasminemia, depressed concentrations of liver copper, and elevated concentrations of liver iron. An impaired humoral-mediated immune response (decreased numbers of antibody-producing cells) is observed in mice with severe as well as marginal copper deficiency. The magnitude of this impairment is highly correlated with the degree of functional copper deficiency (hypoceruloplasminemia).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Prohaska, J R -- Lukasewycz, O A -- New York, N.Y. -- Science. 1981 Jul 31;213(4507):559-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244654" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antibody Formation/*drug effects ; Body Weight/drug effects ; Ceruloplasmin/metabolism ; Copper/*deficiency/pharmacology ; Female ; Hemoglobins/metabolism ; Iron/metabolism ; Liver/metabolism ; Male ; Mice ; Mice, Inbred Strains ; Organ Size/drug effects ; Sex Factors ; Spleen/drug effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 16
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    Diameter of the cell-to-cell junctional membrane channels as probed with neutral molecules (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-07-31
    Beschreibung: The cell-to-cell channels in the junctions of an insect salivary gland and of insect and mammalian cells in culture were probed with fluorescent molecules-neutral linear oligosaccharides, neutral branched glycopeptides, and charged linear peptides. From the molecular dimensions of the largest permeants and smallest impermeants the permeation-limiting channel diameter was obtained: 16 to 20 angstroms for the mammalian cells and 20 to 30 angstroms for the insect cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schwarzmann, G -- Wiegandt, H -- Rose, B -- Zimmerman, A -- Ben-Haim, D -- Loewenstein, W R -- CA 14464/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 31;213(4507):551-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244653" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Line ; Chironomidae ; Fluorescent Dyes ; Glycopeptides/*metabolism ; Intercellular Junctions/*ultrastructure ; Mice ; Mice, Inbred BALB C ; Models, Molecular ; Oligosaccharides/*metabolism ; Protein Conformation ; Salivary Glands/*ultrastructure ; Species Specificity
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 17
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    Myelination of central nervous system axons in tissue culture by transplanted oligodendrocytes (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-06-19
    Beschreibung: Unmyelinated mouse cerebellar cerebellar cultures in which oligodendrocyte differentiation had been suppressed by exposure to cytosine arabinoside developed axonal myelin after superimposition of kainic acid-treated cerebellar explants devoid of myelin-receptive axons. The latter explants contained differentiated oligodendrocytes. The operation of a diffusible myelin-stimulating factor was ruled out by the failure of myelination in cytosine arabinoside-exposed explants not in direct contact with oligodendrocyte-containing transplants.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Seil, F -- Blank, N K -- New York, N.Y. -- Science. 1981 Jun 19;212(4501):1407-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233230" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Newborn ; Axons/drug effects/*physiology ; Cerebellum/drug effects/*physiology ; Collagen ; Cytarabine/pharmacology ; Kainic Acid/pharmacology ; Mice ; Myelin Sheath/drug effects/*physiology ; Neuroglia/*transplantation ; Oligodendroglia/*transplantation ; Organ Culture Techniques
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 18
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    Studies in histocompatibility (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-07-10
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Snell, G D -- New York, N.Y. -- Science. 1981 Jul 10;213(4504):172-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7017931" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alleles ; Animals ; Antigens, Neoplasm/genetics ; Antigens, Viral/genetics ; Antigens, Viral, Tumor ; Female ; Genetic Linkage ; Genotype ; H-2 Antigens/genetics ; Heterozygote ; *Major Histocompatibility Complex ; Male ; Mice ; Mice, Inbred Strains ; Neoplasms, Experimental/genetics/*immunology ; Pedigree ; Rats ; Species Specificity
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 19
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    Immunization of Baboons with Schistosoma mansoni Cercariae attenuated by gamma irradiation (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-06-26
    Beschreibung: Studies on the efficacy of a vaccine against schistosomiasis in young baboons (Papio anubis) disclosed that immunization with Schistosoma mansoni cercariae attenuated by gamma irradiation induced significant protection against subsequent infection with normal, viable S. mansoni cercariae. Such immunization resulted in reduced worm burdens (70 percent) and egg excretion rates (82 percent). These results support immunization as a potential method for schistosomiasis control.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stek M, F r -- Minard, P -- Dean, D A -- Hall, J E -- New York, N.Y. -- Science. 1981 Jun 26;212(4502):1518-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233238" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Female ; *Immunization ; Mice ; Mice, Inbred Strains ; Papio ; Schistosoma mansoni/immunology/*radiation effects ; Schistosomiasis/prevention & control
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 20
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    Mouse pox threat (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-01-30
    Beschreibung: A News and Comment Briefing ("OSHA backs away from strict lab rules," 28 Nov. 1980, p. 992) incorrectly quoted a National Research Council report on safe handling of laboratory chemicals as saying, "For most laboratory environments, ... regular monitoring of the airborne concentrations of a variety of different toxic materials is both unjustified and unjust." The report actually said it was "unjustified and impractical."〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wallace, G D -- New York, N.Y. -- Science. 1981 Jan 30;211(4481):438.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6256854" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Laboratory/*microbiology ; Disease Outbreaks/*veterinary ; Ectromelia virus ; Ectromelia, Infectious/*epidemiology ; Mice ; Mice, Inbred Strains ; Poxviridae Infections/*epidemiology ; Rodent Diseases/epidemiology ; United States
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 21
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    Intestinal M cells: a pathway for entry of reovirus into the host (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-04-24
    Beschreibung: Thirty minutes after inoculation of reovirus type 1 into the intestinal lumen of the mouse, viruses were found adhering to the surface of intestinal M cells but not other epithelial cells. Within 1 hour, viruses were seen in the M cell cytoplasm and were associated with mononuclear cells in the intercellular space adjacent to the M cell. These findings suggest that M cells are the site where reovirus penetrates the intestinal epithelium.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wolf, J L -- Rubin, D H -- Finberg, R -- Kauffman, R S -- Sharpe, A H -- Trier, J S -- Fields, B N -- AI 13178/AI/NIAID NIH HHS/ -- AM 07121/AM/NIADDK NIH HHS/ -- AM 17537/AM/NIADDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1981 Apr 24;212(4493):471-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6259737" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Suckling/microbiology ; Endocytosis ; Extracellular Space/microbiology ; Intestinal Mucosa/cytology/*microbiology ; Mice ; Peyer's Patches/microbiology ; Receptors, Virus/metabolism ; Reoviridae/*physiology ; Reoviridae Infections/*pathology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 22
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    Gene for neuraminidase activity on mouse chromosome 17 near h-2: pleiotropic effects on multiple hydrolases (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-04-03
    Beschreibung: The low activity of liver neuraminidase that is characteristic of mouse strain SM/J is inherited as a single gene on chromosome 17, near the major histocompatibility complex. This gene, neuraminidase-1 (Neu-1), is represented by the low activity allele Neu-1s in SM/J and the high activity allele Neu-1b in C57BL/6J and most other strains. Previously described variations in the posttranslational processing of acid phosphatase, alpha-mannosidase, arylsulfatase-B, and alpha-glucosidase are attributed to pleiotropic effects of this gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Womack, J E -- Yan, D L -- Potier, M -- New York, N.Y. -- Science. 1981 Apr 3;212(4490):63-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209520" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alleles ; Animals ; Chromosome Mapping ; Female ; H-2 Antigens/genetics ; Hydrolases/*metabolism ; Liver/enzymology ; Major Histocompatibility Complex ; Male ; Mice ; Mice, Inbred Strains/*genetics/metabolism ; Neuraminidase/*genetics ; Protein Precursors/*metabolism ; Recombination, Genetic ; Sialic Acids/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 23
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    Metastatic potential is positively correlated with cell surface sialylation of cultured murine tumor cell lines (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-06-26
    Beschreibung: The ability of murine tumor cells to metastasize spontaneously from subcutaneous sites is positively correlated with the total sialic acid content of the cells in culture, the degree to which the sialic acid is exposed on the tumor cell surface, and, most strongly, with the degree of sialylation of galactosyl and N-acetylgalactosaminyl residues in cell surface glycoconjugates. These findings suggest that sialic acid on the cell surface may play a role in tumor cell metastasis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yogeeswaran, G -- Salk, P L -- CA19312-01/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Jun 26;212(4502):1514-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233237" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Line ; Cell Membrane/*physiology ; Cell Transformation, Neoplastic ; Cell Transformation, Viral ; Mice ; *Neoplasm Metastasis ; Neoplasms, Experimental/*physiopathology ; Sialic Acids/*analysis
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 24
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    Therapy of mouse lymphoma with monoclonal antibodies to glycolipid: selection of low antigenic variants in vivo (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-01-30
    Beschreibung: Growth of mouse lymphoma L5178Y, which contains large quantitites of the gangliotriosylceramide (GgOs3Cer), in DBA/2 mice was suppressed by passive immunization with monoclonal immunoglobulin G3 antibodies to GgOS3Cer, but not by immunoglobulin M antibodies with or without added complement. Most groups of mice treated with monoclonal immunoglobulin G3 antibodies did not develop tumors, but the tumor that appeared in a treated animal had a much lower amount of the GgOS3Cer than the cells used for inoculation. Thus, passive immunization either prevented growth of the lymphoma or caused selection of a variant with a lower quantity of the antigen GgOS3Cer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Young, W W Jr -- Hakomori, S I -- CA27746/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Jan 30;211(4481):487-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7455688" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antigens, Neoplasm ; Antigens, Surface ; Clone Cells/immunology ; Glycolipids/*immunology ; Hybrid Cells/immunology ; Immunization, Passive ; Immunoglobulin G/administration & dosage ; Immunoglobulin M/administration & dosage ; Immunotherapy ; Lymphoma/immunology/*therapy ; Mice ; Neoplasms, Experimental/therapy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 25
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    Differentiation of murine bone marrow stem cells in vitro: long-term growth promoted by a lymphocyte-derived mediator (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-01-02
    Beschreibung: In attempts to induce differentiation of lymphoid cells from hematopoietic stem cells in vitro, the effects of allogeneic effect factor on the growth of murine bone marrow cultures were studied. Allogeneic effect factor is a soluble mediator derived from mixed secondary murine leukocyte cultures. For several weeks it supported the growth of bone marrow cultures, as indicated by the maintenance of stem cell activity, cellular proliferation, and heterogeneity. Another lymphokine, T cell growth factor, did not, Pre-T lymphocytes could be detected in these cultures for several weeks.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Altman, A -- Gilmartin, T D -- Katz, D H -- CA-25803/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Jan 2;211(4477):65-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6934621" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Bone Marrow Cells ; Cell Adhesion ; Cell Communication ; Cell Differentiation/*drug effects ; Colony-Forming Units Assay ; Glycoproteins/*pharmacology ; Hematopoietic Stem Cells/*cytology ; Histocompatibility Antigens Class II ; Lymph Nodes/cytology ; Lymphokines/*pharmacology ; Mice ; Mitogens
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 26
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    Myeloma neuropathy: passive transfer from man to mouse (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-08-28
    Beschreibung: Mice were injected daily, for up to 10 weeks, with purified monoclonal immunoglobulin G from patients with myelomatous polyneuropathy or benign gammopathy. The animals developed a demyelinating polyneuropathy with slowed nerve conduction velocities. The putative antinerve factor may be an antibody since injection of Fab fragments from the monoclonal immunoglobulin G produced a similar demyelination. This provides evidence of a circulating factor in the serum of myeloma patients with polyneuropathy that reproduces typical features of the human disease on passive transfer. This disorder is thus distinguished from other neuropathies that occur as remote effects of malignant disease but have no identified pathogenic factors associated with them.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Besinger, U A -- Toyka, K V -- Anzil, A P -- Fateh-Mognadam, A -- Rouscher, R -- Heininger, K -- New York, N.Y. -- Science. 1981 Aug 28;213(4511):1027-30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7268405" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Autoimmune Diseases/*immunology ; Demyelinating Diseases/*etiology/immunology/physiopathology ; Female ; Humans ; Immunization, Passive ; Immunoglobulin Fab Fragments ; Immunoglobulin Fc Fragments ; Immunoglobulin G ; Mice ; Multiple Myeloma/*complications ; Neural Conduction
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 27
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    Reversal diabetes by islet transplantation: vulnerability of the established allograft (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-09-11
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bowen, K M -- Prowse, S J -- Lafferty, K J -- AM28126-01/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Sep 11;213(4513):1261-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6791285" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Ascitic Fluid/cytology ; Blood Glucose/metabolism ; Diabetes Mellitus, Experimental/*therapy ; *Graft Rejection ; Islets of Langerhans/immunology ; *Islets of Langerhans Transplantation ; Mice ; Organ Culture Techniques ; Transplantation, Homologous
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 28
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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)
    Details
    Publikationsdatum: 1981-03-13
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 29
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    Behavioral effects of lead and Toxocara canis in mice (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-09-04
    Beschreibung: Adult mice were administered the common parasite Toxocara canis or lead or both. The parasite clearly altered mouse performance on tests of exploration, activity, learning, and motor coordination; behavioral effects in mice receiving lead alone were less general. Consequence of Toxocara administration appeared attenuated in animals receiving both agents. Parasite larvae were found in the central nervous system in all infected mice.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dolinsky, Z S -- Burright, R G -- Donovick, P J -- Glickman, L T -- Babish, J -- Summers, B -- Cypess, R H -- 08-K4AI00301A-03/AI/NIAID NIH HHS/ -- 08R1AI1478A-03/AI/NIAID NIH HHS/ -- 5S07RR0749-04/RR/NCRR NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1981 Sep 4;213(4512):1142-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7268424" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Ascariasis/*complications ; Behavior, Animal/*physiology ; Brain/parasitology ; Disease Models, Animal ; Lead Poisoning/*complications/physiopathology ; Male ; Mice ; Toxocariasis/*complications/physiopathology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 30
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    Delta9-tetrahydrocannabinol increase plasma testosterone concentrations in mice (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-07-31
    Beschreibung: Oral administration of delta 9-tetrahydrocannabinol had a biphasic effect on plasma testosterone concentrations in male mice, causing rapid sustained increases at low doses and subsequent decreases at higher doses. In hypophysectomized and intact mice receiving gonadotropins (human chorionic gonadotropin), treatment with delta 9-tetrahydrocannabinol maintained higher plasma testosterone concentrations. Thus, this cannabinoid may interact with gonadotropin and directly influence testicular steroidogenesis in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dalterio, S -- Bartke, A -- Mayfield, D -- 1R01 DA 02/DA/NIDA NIH HHS/ -- P 30 HD 10202/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 31;213(4507):581-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6264607" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Chorionic Gonadotropin/pharmacology ; Dronabinol/*analogs & derivatives/pharmacology ; Hypophysectomy ; Kinetics ; Luteinizing Hormone/*blood ; Male ; Mice ; Testosterone/*blood
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 31
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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
    Publikationsdatum: 1981-09-18
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 32
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    Ethanol reveals novel mercury detoxification step in tissues (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-09-04
    Beschreibung: Volatile mercury was produced de novo by mouse tissue homogenates that contained mercuric ions. Ethanol stimulated the release of tissue mercury into the vapor phase, and the mechanism appears to be an inhibition of reoxidation of volatile mercury. Components responsible for mercury volatilization are heat-labile. The highest volatilizing activity in the liver is associated with the soluble fraction obtained after centrifugation at 105,000g.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dunn, J D -- Clarkson, T W -- Magos, L -- 01248/PHS HHS/ -- ES 01247/ES/NIEHS NIH HHS/ -- GM 07141/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1981 Sep 4;213(4512):1123-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7268418" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Compartmentation ; Cell-Free System ; Cysteine ; Ethanol/*pharmacology ; Gases ; *Inactivation, Metabolic ; Kidney/*metabolism ; Liver/*metabolism ; Mercury/*metabolism ; Mice ; Oxidation-Reduction
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 33
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    Lateral diffusion of surface molecules in animal cells and tissues (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-08-21
    Beschreibung: 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〉
    Schlagwort(e): Animals ; Antigens, Surface/physiology ; Cell Adhesion ; Cell Division ; Cells, Cultured ; Chick Embryo ; Cytoskeleton/physiology ; Diffusion ; *Membrane Fluidity ; Mice
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 34
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    Interferon action: RNA cleavage pattern of a (2'-5')oligoadenylate--dependent endonuclease (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-05-29
    Beschreibung: One of the mediators of interferon action is a latent endoribonuclease (ribonuclease L) that is activated by (2'-5')oligoadenylates. Among the homopolymers of the four common ribonucleotides, activated ribonuclease L degrades at an appreciable rate only polyuridylic acid. In two natural RNA's tested the most frequent ribonuclease L cleavages occur after UA, UG, and UU (A, adenine; U, uracil; and G, guanine) and much less frequent cleavages after CA and AC (C, cytosine).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Floyd-Smith, G -- Slattery, E -- Lengyel, P -- AI-12320/AI/NIAID NIH HHS/ -- CA-16038/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 May 29;212(4498):1030-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6165080" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adenine Nucleotides/*pharmacology ; Animals ; Carcinoma, Ehrlich Tumor/enzymology ; *Endoribonucleases ; HeLa Cells/enzymology ; Humans ; Interferons/*pharmacology ; Mice ; Oligonucleotides/*pharmacology ; Oligoribonucleotides/*pharmacology ; Rna ; Ribonucleases/*metabolism ; Ribonucleotides/analysis ; Substrate Specificity
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 35
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    Parasitism and behavioral dominance among male mice (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-07-24
    Beschreibung: Infestations by the nematode Heligmosomoides polygyrus can prevent adult male mice from becoming behaviorally dominant. The effect is dose-dependent and is more likely to influence the development of dominance than to disrupt existing dominance relationships. Doses capable of exerting this effect are not lethal and do not affect weight.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Freeland, W J -- R03 MH 32090/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 24;213(4506):461-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244643" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Dominance-Subordination ; Larva ; Male ; Mice ; Nematoda ; Nematode Infections/*psychology ; *Social Dominance
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 36
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    Brain acetylcholine synthesis declines with senescence (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-08-07
    Beschreibung: The synthesis of whole brain acetylcholine is reduced in two strains (C57BL and BALB/c) of senescent mice. The incorporation of [U-14C]glucose into acetylcholine decreased in both strains by 40 +/- 4 per cent in 10-month-old mice and by 58 +/- 9 percent in 30-month-old mice compared with mice 3 months old. The incorporation of [2H4]choline into acetylcholine declined 60 and 73 percent in 10- and 30-month-old mice, respectively. Deficits in the cholinergic system may contribute to brain dysfunctions that complicate senescence.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibson, G E -- Peterson, C -- Jenden, D J -- MH17691/MH/NIMH NIH HHS/ -- MS15649/PHS HHS/ -- NS16997/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Aug 7;213(4508):674-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7256270" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetylcholine/*biosynthesis ; *Aging ; Animals ; Behavior, Animal/physiology ; Brain/*metabolism ; Choline/metabolism ; Glucose/metabolism ; Lactates/metabolism ; Mice
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 37
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    Mechanisms of gonadal differentiation (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-03-20
    Beschreibung: Sex differentiation is the result of the translation of genetic sex into gonadal sex. Without recognizable masculinizing signals the embryonic gonad will undergo ovarian differentiation. The main determinant of gonadal differentiation appears to be the presence or absence of a cell surface antigen, called H-Y antigen. The regulation of H-Y antigen expression is complex and involves the interaction between regulatory sites on the Y chromosome, the X chromosome, and possibly the autosomes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Haseltine, F P -- Ohno, S -- 5R01 HD 12289-02/HD/NICHD NIH HHS/ -- R0I AD 00042/AD/ADAMHA HHS/ -- New York, N.Y. -- Science. 1981 Mar 20;211(4488):1272-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7010601" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cattle ; Disorders of Sex Development ; Embryonic Induction ; Female ; Fertility ; Freemartinism/genetics ; Germ Cells/physiology ; H-Y Antigen/genetics/*physiology ; Humans ; Male ; Mammals/genetics ; Mice ; Ovary/embryology ; Rats ; Sex Chromosomes ; *Sex Determination Analysis ; *Sex Differentiation ; Testis/embryology/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 38
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    Somatic cell hybrids from frog lymphocytes and mouse myeloma cells (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-05-29
    Beschreibung: Stable somatic cell hybrids were obtained by fusing Xenopus lymphocytes with mouse myeloma cells. These hybrids contained one to four Xenopus chromosomes and expressed Xenopus gene products, one of which was a lymphocyte membrane protein of 85,000 daltons precipitated by a monoclonal antibody.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hengartner, H -- Du Pasquier, L -- New York, N.Y. -- Science. 1981 May 29;212(4498):1034-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6785884" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antibodies ; Antibodies, Monoclonal ; Cell Line ; Clone Cells ; Genes ; Hybrid Cells/*physiology ; Lymphocytes/*physiology ; Membrane Proteins/biosynthesis ; Mice ; Molecular Weight ; Neoplasms, Experimental/physiopathology ; Plasmacytoma/*physiopathology ; Xenopus
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 39
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    Lamarck will not lie down (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-07-17
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1981 Jul 17;213(4505):316-21.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244617" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Immune Tolerance ; *Immunogenetics ; Mice ; Periodicals as Topic ; Quality Control ; *Research Design
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 40
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    Hemin lyses malaria parasites (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-11-06
    Beschreibung: Malaria parasites isolated from mouse erythrocytes are lysed by ferriprotoporphyrin IX chloride (hemin) or by a chloroquine-hemin complex in amounts that could be produced by release of less than 0.1 percent of the heme in erythrocytic hemoglobin. This effect of hemin may explain the protection against malaria provided by thalassemia and other conditions causing intracellular denaturation of hemoglobin. The toxicity of the chloroquine-hemin complex may explain the selective antimalarial action of chloroquine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Orjih, A U -- Banyal, H S -- Chevli, R -- Fitch, C D -- New York, N.Y. -- Science. 1981 Nov 6;214(4521):667-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7027441" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Chloroquine/*pharmacology ; Drug Interactions ; Drug Resistance ; Heme/*analogs & derivatives ; Hemin/*pharmacology ; Mice ; Plasmodium berghei/*drug effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 41
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    The prolactin gene is located on chromosome 6 in humans (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-05-15
    Beschreibung: The gene for prolactin has been located on chromosome 6 in humans. DNA fragments of 4.8 and 4.0 kilobases containing prolactin gene sequences were identified in human genomic DNA, whereas DNA fragments of 7.4, 3.6, and 3.3 kilobases containing prolactin gene sequences were found in mouse cells. In somatic cell hybrids of human and mouse cells the 7.4-, 3.6-, and 3.3-kilobase mouse fragments were always present, whereas the 4.8- and 4.0-kilobase human fragments were only present when human chromosome 6 was also present. We conclude that the prolactin gene resides on chromosome 6, a different location from those of the genes for the related hormones chorionic somatomammotropin and growth hormone.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Owerbach, D -- Rutter, W J -- Cooke, N E -- Martial, J A -- Shows, T B -- AM 21344/AM/NIADDK NIH HHS/ -- GM 20454/GM/NIGMS NIH HHS/ -- HD 05196/HD/NICHD NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1981 May 15;212(4496):815-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7221563" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Chromosomes, Human, 6-12 and X ; Genes ; Genetic Linkage ; Growth Hormone/genetics ; Humans ; Hybrid Cells/physiology ; Mice ; Placental Lactogen/genetics ; Prolactin/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 42
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    Selective protection of methionine enkephalin released from brain slices by enkephalinase inhibition (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-06-05
    Beschreibung: Methionine enkephalin release was evoked by depolarization of slices from rat striatum with potassium. In the presence of 0.1 microM thiorphan [(N(R,S)-3-mercapto-2-benzylpropionyl)glycine], a potent inhibitor of enkephalin dipeptidyl carboxypeptidase (enkephalinase), the recovery of the pentapeptide in the incubation medium was increased by about 100 percent. A similar effect was observed with the dipeptide phenylalanylalanine, a selective although less potent enkephalinase inhibitor. Inhibition of other known enkephalin-hydrolyzing enzymes--aminopeptidase by 0.1 mM puromycin or angiotensin-converting enzyme by 1 microM captopril--did not significantly enhance the recovery of released methionine enkephalin. These data indicate that enkephalinase is critically involved in the inactivation of the endogenous opioid peptide released from striatal neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Patey, G -- De La Baume, S -- Schwartz, J C -- Gros, C -- Roques, B -- Fournie-Zaluski, M C -- Soroca-Lucas, E -- New York, N.Y. -- Science. 1981 Jun 5;212(4499):1153-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7015510" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acids, Sulfur/*pharmacology ; Animals ; Corpus Striatum/drug effects/*metabolism ; Endorphins/*secretion ; Enkephalin, Methionine ; Enkephalins/antagonists & inhibitors/*secretion ; Mice ; Neprilysin ; Potassium/pharmacology ; *Protease Inhibitors/*pharmacology ; Rats ; Thiorphan ; Tiopronin/analogs & derivatives/*pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 43
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    Sensory and motor functions of spinal cord substance P (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-12-18
    Beschreibung: Low doses of D-Pro2-D-Phe7-D-Trp9-substance P, as specific substance P antagonist, depressed the scratching and biting behaviors elicited by intrathecal injections of substance P, and cutaneous application of algesic substances. Higher antagonist doses caused hindlimb paralysis. This suggests that substance P is a neurotransmitter for primary nociceptor afferents and may also have an important function in motor control.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Piercey, M F -- Schroeder, L A -- Folkers, K -- Xu, J C -- Horig, J -- New York, N.Y. -- Science. 1981 Dec 18;214(4527):1361-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6171882" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Capsaicin/pharmacology ; Mice ; Motor Activity/drug effects ; Pain/*physiopathology ; Receptors, Cell Surface/drug effects ; Receptors, Neurokinin-1 ; Receptors, Neurotransmitter/drug effects ; Skin/drug effects ; Spinal Cord/*physiology ; Substance P/analogs & derivatives/antagonists & ; inhibitors/pharmacology/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 44
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    Psychoneuroendocrine influences on immunocompetence and neoplasia (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-06-05
    Beschreibung: Emotional, psychosocial, or anxiety-stimulated stress produces increased plasma concentrations of adrenal corticoids and other hormones though well-known neuroendocrine pathways. A direct consequence of these increased corticoid concentrations is injury to elements of the immunological apparatus, which may leve the subject vulnerable to the action of latent oncogenic viruses, newly transformed cancer cells, or other incipient pathological processes that are normally held in check by an intact immunological apparatus. This article describes studies that examine the adverse effects of increased plasma concentrations of adrenal corticoids on the thymus and thymus-dependent T cells, inasmuch as these elements constitute a major defense system against various neoplastic processes and other pathologies. The studies demonstrate that anxiety-stress can be quantitatively induced and the consequences measured through specific biochemical and cellular parameters, providing that authentic quiescent baselines of these conditions are obtained in the experimental animals by the use of low-stress protective housing and handling techniques.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Riley, V -- CA 12188/CA/NCI NIH HHS/ -- CA 16308/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Jun 5;212(4499):1100-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233204" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Corticosterone/blood ; Female ; Handling (Psychology) ; Humans ; *Immunocompetence ; Leukocytes/physiology ; Mice ; Mice, Inbred Strains ; Neoplasms/*etiology/physiopathology/psychology ; Neoplasms, Experimental/*physiopathology ; Species Specificity ; Stress, Physiological/*complications ; Stress, Psychological/*complications ; Tumor Virus Infections/physiopathology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 45
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    Inherited primary hypothyroidism in mice (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-04-03
    Beschreibung: A new autosomal recessive mutation that causes hypothyroidism has been identified in mice. The gene, herein named hypothyroid (hyt), has been mapped on chromosome 12 approximately 30 units from the centromere. The mutants are characterized by retarded growth, infertility, mild anemia, elevated serum cholesterol, very low to undetectable serum thyroxine, and elevated serum thyroid-stimulating hormone. Thyroid glands are in the normal location but are reduced in size and hypoplastic. Mutant mice respond to thyroid hormone therapy by improved growth and fertility. These findings suggest that the hyt mutant gene results in primary hypothyroidism unresponsive to thyroid-stimulating hormone.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beamer, W J -- Eicher, E M -- Maltais, L J -- Southard, J L -- AM-17947/AM/NIADDK NIH HHS/ -- NS-09378/NS/NINDS NIH HHS/ -- RR-01138/RR/NCRR NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1981 Apr 3;212(4490):61-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209519" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Anemia/etiology ; Animals ; Cholesterol/blood ; Chromosome Mapping ; Crosses, Genetic ; Female ; Genes, Recessive ; Humans ; Hypothyroidism/blood/*genetics/veterinary ; Male ; Mice ; Mice, Mutant Strains/*genetics ; Rodent Diseases/genetics ; Thyroid Gland/pathology ; Thyrotropin/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 46
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    Molecular basis of bunyavirus transmission by mosquitoes: role of the middle-sized RNA segment (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-03-27
    Beschreibung: In an examination of the molecular basis of oral transmission of bunyaviruses by mosquitoes., La Crosse (LAC), snowshoe hare (SSH), and LAC-SSH reassortant viruses were compared in their ability to be transmitted to laboratory mice by the natural mosquito vector of LAC virus, Aedes triseriatus. Both LAC virus and the reassortment viruses containing the middle-sized (M) segment from the LAC parent were efficiently transmitted. In contrast, SSH virus and reassortment viruses containing the M RNA from the SSH parent were inefficiently transmitted. Thus, the M RNA segment, which codes for the virion glycoproteins, may be a major determinant of oral transmission of bunyaviruses by mosquitoes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beaty, B J -- Holterman, M -- Tabachnick, W -- Shope, R E -- Rozhon, E J -- Bishop, D H -- 1-T32-AI 07041/AI/NIAID NIH HHS/ -- AI-15400/AI/NIAID NIH HHS/ -- AI-15426/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1981 Mar 27;211(4489):1433-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6781068" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aedes/*microbiology ; Animals ; Bunyaviridae/*genetics/pathogenicity ; Bunyaviridae Infections/*transmission ; Female ; Glycoproteins/physiology ; Insect Vectors ; Mice ; RNA, Viral/genetics/*physiology ; Recombination, Genetic ; Viral Proteins/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 47
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    Astatine-211--tellurium radiocolloid cures experimental malignant ascites (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-04-17
    Beschreibung: An investigation of the efficacy of astatine-211--tellurium colloid for the treatment of experimental malignant ascites in mice reveals that this alpha-emitting radiocolloid can be curative without causing undue toxicity to normal tissue. By comparison, negatron-emitting phosphorus-32 as colloidal chromic phosphate had no antineoplastic activity. The most compelling explanation for this striking difference is the dense ionization and short range of action associated with alpha-emission. These results have important implications for the development and use of alpha-emitters as radiocolloid therapy for the treatment of human tumors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bloomer, W D -- McLaughlin, W H -- Neirinckx, R D -- Adelstein, S J -- Gordon, P R -- Ruth, T J -- Wolf, A P -- CA-12662/CA/NCI NIH HHS/ -- CA-15523/CA/NCI NIH HHS/ -- NS-15380/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Apr 17;212(4492):340-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209534" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alpha Particles ; Animals ; Ascites/*radiotherapy ; Astatine/*therapeutic use ; Cell Survival/radiation effects ; Chromium/therapeutic use ; *Chromium Compounds ; Colloids ; Female ; Mice ; Neoplasm Transplantation ; Neoplasms, Experimental/*radiotherapy ; Ovarian Neoplasms ; Phosphates/therapeutic use ; Phosphorus Radioisotopes/therapeutic use ; Radioisotopes/*therapeutic use ; Tellurium/*therapeutic use ; Transplantation, Homologous
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 48
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    Repair of the ultraviolet-irradiated male genome in fertilized mouse eggs (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-03-27
    Beschreibung: Unscheduled DNA synthesis occurred in both male and female pronuclei of the mouse zygote in response to irradiation with ultraviolet light, indicating a capacity for excision repair. Furthermore, damage to DNA of the male gamete before fertilization can be repaired after the sperm enters the egg cytoplasm.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brandriff, B -- Pedersen, R A -- T32-CA09272-03/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Mar 27;211(4489):1431-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7466400" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Autoradiography ; Cytoplasm/metabolism ; DNA/biosynthesis/radiation effects ; *DNA Repair ; Female ; Male ; Mice ; Mice, Inbred ICR ; Spermatozoa/*radiation effects ; Ultraviolet Rays ; Zygote/*metabolism/radiation effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 49
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    Interaction between purine and benzodiazepine: Inosine reverses diazepam-induced stimulation of mouse exploratory behavior (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-02-13
    Beschreibung: Inosine, 2-deoxyinosine, and 2-deoxyguanosine completely reversed the increase in exploratory activity elicited in mice by diazepam. The inhibition of exploratory behavior by purines occurred at doses that when given alone have no effect on exploratory behavior. 7-Methylinosine, which does not bind to the brain benzodiazepine binding site in vitro, had no effect on the diazepam-induced increase in exploratory behavior. Behavioral effects produced by various combinations of inosine and diazepam indicate that the interaction between purine and benzodiazepine is antagonistic and support the hypothesis that the naturally occurring purines function in anxiety-related behaviors that respond to benzodiazepine treatment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Crawley, J N -- Marangos, P J -- Paul, S M -- Skolnick, P -- Goodwin, F K -- New York, N.Y. -- Science. 1981 Feb 13;211(4483):725-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6256859" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Anxiety/*drug effects ; Behavior, Animal/drug effects ; Diazepam/*antagonists & inhibitors ; Dose-Response Relationship, Drug ; Humans ; Inosine/*pharmacology ; Male ; Mice ; Receptors, Drug/*drug effects ; Receptors, GABA-A
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 50
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    Interferon-resistant cell line lacks fatty acid cyclooxygenase activity (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-04-17
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 51
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    Lophotoxin: a novel neuromuscular toxin from Pacific sea whips of the genus Lophogorgia (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-06-26
    Beschreibung: A new neuromuscular toxin, lophotoxin, has been isolated from several pacific gorgonians of the genus Lophogorgia. The structure of lophotoxin was deduced by combined spectrochemical methods, and belongs to the well-known cembrene class of diterpenoid molecules. Lophotoxin contains furanoaldehyde and alpha, beta-epoxy-gamma-lactone functional groups, in sharp contrast to the cationic ammonium functional groups of the established neurotoxins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fenical, W -- Okuda, R K -- Bandurraga, M M -- Culver, P -- Jacobs, R S -- New York, N.Y. -- Science. 1981 Jun 26;212(4502):1512-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6112796" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cnidaria/*analysis ; Cnidarian Venoms/*isolation & purification/pharmacology ; Diterpenes/*isolation & purification/pharmacology/toxicity ; Electric Stimulation ; Mice ; Muscle Contraction/drug effects ; Muscles/innervation ; Neuromuscular Junction/drug effects/physiology ; Species Specificity ; *Terpenes
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 52
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    Hydrogen isotope ratios of mouse tissues are influenced by a variety of factors other than diet (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-12-18
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉DeNiro, M J -- Epstein, S -- New York, N.Y. -- Science. 1981 Dec 18;214(4527):1374-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7313700" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Deuterium/*metabolism ; *Diet ; Hydrogen/*metabolism ; Mice ; Water/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 53
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    Plasminogen activator release at the neuronal growth cone (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-09-25
    Beschreibung: The site of plasminogen activator release by differentiated neuroblastoma clonal cell lines was determined with a fibrin overlay assay. Release of plasminogen activator was seen at the growth cone in 72 percent of the cells bearing neurites. For 21 percent of these cells the growth cone was the predominant or exclusive site of this enzyme activity. Selective release of protease at the "trailblazing" tip of the neurite may be important in neuron migration and neurite growth in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Krystosek, A -- Seeds, N W -- New York, N.Y. -- Science. 1981 Sep 25;213(4515):1532-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7197054" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Differentiation ; Cell Line ; *Cell Movement ; Cytochalasin B/pharmacology ; Fibroblasts/metabolism ; Mice ; Neuroblastoma ; Neurons/cytology/*enzymology ; Plasminogen Activators/*metabolism/secretion ; Secretory Rate/drug effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 54
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    Nitrogen-13-labeled nitrite and nitrate: distribution and metabolism after intratracheal administration (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-04-03
    Beschreibung: Radioactive nitrogen-13 from nitrite (NO2-) or nitrate (NO3-) administered intratracheally or intravenously without added carrier to mice or rabbits was distributed evenly throughout most organs and tissues regardless of the entry route or the anion administered. Nitrogen-13 from both anions was distributed uniformly between plasma and blood cells. We found rapid in vivo oxidation of NO2- to NO3- at concentrations of 2 to 3 nanomoles per liter in blood. Over 50 percent oxidation within 10 minutes accounted for the similar nitrogen-13 distributions from both parent ions. The oxidation rates were animal species-dependent. No reduction of 13NO3- to 13NO2- was observed. A mechanistic hypothesis invoking oxidation of 13NO2- by a catalase-hydrogen peroxide complex accounts for the results. These results imply a concentration dependence for the in vivo fate of NO2- or nitrogen dioxide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Parks, N J -- Krohn, K J -- Mathis, C A -- Chasko, J H -- Geiger, K R -- Gregor, M E -- Peek, N F -- New York, N.Y. -- Science. 1981 Apr 3;212(4490):58-60.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209517" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Chromatography, High Pressure Liquid ; Injections, Intravenous ; Mice ; Mice, Inbred BALB C ; Nitrates/administration & dosage/*metabolism ; Nitrites/administration & dosage/*metabolism ; Nitrogen Isotopes ; Oxidation-Reduction ; Rabbits ; Species Specificity ; Tissue Distribution ; Trachea
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 55
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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
    Publikationsdatum: 1981-01-02
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 56
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    Maternal hyperoxia greatly reduces the incidence of phenytoin-induced cleft lip and palate in A/J mice (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-05-08
    Beschreibung: The A/J mouse has been used to study the teratogenic affects of phenytoin. The developmental abnormalities produced in offspring of this model are similar to some of the malformations observed in cases of human "fetal hydantoin syndrome." Placing pregnant A/J mice in a hyperoxic chamber after phenytoin injection greatly reduces the incidence of phenytoin-induced cleft lip and palate. These results suggest that phenytoin may affect embryonic development indirectly by altering maternal physiology. This maternally mediated mechanism, and the protection against it afforded by hyperoxia, has general implications for the effects of maternal toxicity on teratogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Millicovsky, G -- Johnston, M C -- DE 02668/DE/NIDCR NIH HHS/ -- DE 05248/DE/NIDCR NIH HHS/ -- RR 05333/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1981 May 8;212(4495):671-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7221553" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Abnormalities, Drug-Induced/*prevention & control ; Animals ; Cleft Lip/chemically induced/*prevention & control ; Cleft Palate/chemically induced/*prevention & control ; Female ; Mice ; Mice, Inbred A ; Oxygen/*therapeutic use ; Phenytoin/*antagonists & inhibitors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 57
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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
    Publikationsdatum: 1981-01-23
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 58
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    Continuous lines of basophil/mast cells derived from normal mouse bone marrow (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-04-17
    Beschreibung: Nonadherent tissue culture cell lines were established from normal bone marrow of a variety of mouse strains. The lines possessed morphological and histochemical markers of the basophil/mast cell and contained committed stem cells for metachromatic cells. Their derivation from normal marrow and their lack of tumorigenicity despite long-term culture makes these cell lines potentially important for studies of the mechanisms of allergic reactions and inflammation as well as the differentiation pathways involving this subset of hematopoietic cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nagao, K -- Yokoro, K -- Aaronson, S A -- New York, N.Y. -- Science. 1981 Apr 17;212(4492):333-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209531" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Basophils ; *Bone Marrow Cells ; Cell Differentiation ; *Cell Line ; Culture Techniques ; Hematopoietic Stem Cells ; Histocytochemistry ; *Mast Cells ; Mice ; Mice, Inbred Strains
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 59
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    Individual hippocampal mossy fiber distribution in mice correlates with two-way avoidance performance (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-11-13
    Beschreibung: Mice systematically bred for randomization of their genotype show large individual differences when performing a two-way avoidance task (shuttle-box learning). Their behavioral scores correlate strongly (r = -0.80, P less than .01) with the number of mossy fibers synapsing on basal dendrites of hippocampal pyramidal neurons, poor avoiders having relatively more such terminals. This confirms previous findings showing that rat and mouse strains known for genetically dependent poor avoidance learning have extended intra- and infrapyramidal mossy fiber projections.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schwegler, H -- Lipp, H P -- Van der Loos, H -- Buselmaier, W -- New York, N.Y. -- Science. 1981 Nov 13;214(4522):817-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7292015" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Avoidance Learning/*physiology ; Female ; Hippocampus/*cytology/physiology ; Male ; Mice ; Neural Pathways/physiology ; Pyramidal Tracts/cytology
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Fetal alcohol syndrome: embryogenesis in a mouse model (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-11-20
    Beschreibung: When two small doses of ethanol were administered to pregnant mice during the gastrulation stage of embryogenesis, the embryos developed craniofacial malformations closely resembling those seen in the human fetal alcohol syndrome. Striking histological changes appeared in the developing brain (neuroectoderm) within 24 hours of exposure. Decreased development of the neural plate and its derivatives apparently accounts for the craniofacial malformations. The critical exposure period is equivalent to the third week in human pregnancy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sulik, K K -- Johnston, M C -- Webb, M A -- DE 02668/DE/NIDCR NIH HHS/ -- DE 05906/DE/NIDCR NIH HHS/ -- RR 05333/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1981 Nov 20;214(4523):936-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6795717" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Child ; Disease Models, Animal ; Embryo, Mammalian/*drug effects/ultrastructure ; Ethanol/*pharmacology ; Eye Abnormalities ; Female ; Fetal Alcohol Spectrum Disorders/*physiopathology ; Humans ; Mice ; Mice, Inbred C57BL ; Microscopy, Electron, Scanning ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 61
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    At long last, Linus Pauling lands NCI grant (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-06-05
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sun, M -- New York, N.Y. -- Science. 1981 Jun 5;212(4499):1126-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7015509" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Ascorbic Acid/*therapeutic use ; History, 20th Century ; Humans ; Mice ; *National Institutes of Health (U.S.) ; *Research Support as Topic ; United States
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 62
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    Taurine: possible role in osmotic regulation of mammalian heart (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-12-18
    Beschreibung: It is well established that taurine plays an important role in the maintenance of intracellular osmolal concentration in marine invertebrates, teleosts, and amphibians. In fresh water, concentrations of taurine in body tissues decrease; in salt water, they increase. In this study with mice we found that during adaptation of these mammals to chronic hypernatremia, the taurine content of the heart increased; concentrations of other amino acids were unchanged or were decreased. Welty and his associated have shown that acute hyponatremia lowered the taurine concentration of rat heart. In concert, these data suggest that taurine also may serve as an osmotic agent in mammalian heart.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thurston, J H -- Hauhart, R E -- Naccarato, E F -- NB 06163/NB/NB NIH HHS/ -- NS 15660/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Dec 18;214(4527):1373-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7313699" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acids/*physiology ; Animals ; Heart/*physiology ; Mice ; Taurine/*physiology ; Water-Electrolyte Balance
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 63
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    Activation of the transforming potential of a normal cell sequence: a molecular model for oncogenesis (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-05-22
    Beschreibung: The molecularly cloned, long terminal repeat (LTR) of the Moloney sarcoma virus (M-MSV) provirus has been covalently linked to c-mos, the cellular homolog of the M-MSV-specific sequence, v-mos. These newly constructed clones lack any M-MSV-derived sequences other than the LTR, but in DNA transfection assays they transform cells as efficiently as cloned subgenomic M-MSV fragments containing both v-mos and LTR. Cells transformed by LTR:c-mos hybrid molecules contain additional copies of mos DNA, and several size classes of polyadenylated RNA's with sequence homology to mos. The activation of the transforming potential of c-mos by the proviral LTR suggests a model whereby LTR-like elements could activate other normal cell sequences with oncogenic potential.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Blair, D G -- Oskarsson, M -- Wood, T G -- McClements, W L -- Fischinger, P J -- Vande Woude, G G -- New York, N.Y. -- Science. 1981 May 22;212(4497):941-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233190" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Cell Transformation, Viral ; Cells, Cultured ; DNA, Recombinant ; Defective Viruses/genetics ; Gene Expression Regulation ; *Genes, Viral ; Mice ; Moloney murine leukemia virus/*genetics ; Nucleic Acid Hybridization ; Operon ; Plasmids
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 64
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    Feminizing effect of mesonephros on cultured differentiating mouse gonads and ducts (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-05-15
    Beschreibung: Gonads were removed from fetal mice at about the time that gonadal sex differentiation occurs. The gonads were cultured in vitro with or without their mesonephric tissue. When gonads and ducts removed from sexually undifferentiated fetuses were cultured together, the gonads of both sexes developed female characteristics, whereas gonads cultured without mesonephros developed according to the sex of the fetus from which they were removed. Gonads of sexually differentiated fetuses developed whether they were cultured with or without the mesonephros.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Byskov, A G -- Grinsted, J -- New York, N.Y. -- Science. 1981 May 15;212(4496):817-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7221564" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Culture Techniques ; Embryonic Induction ; Female ; Gestational Age ; Male ; Mesonephros/*physiology ; Mice ; Mullerian Ducts/physiology ; Ovary/*embryology ; Sex Differentiation ; Testis/*embryology ; Wolffian Ducts/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 65
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    Inflammatory toxin from Mycoplasma bovis: isolation and characterization (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-05-29
    Beschreibung: An inflammatory toxin was extracted from Mycoplasma bovis with 75 percent aqueous ethanol. The toxin is a complex polysaccharide composed of glucose, glucosamine or galactosamine, and a heptose, is heat-stable, devoid of protein and lipid, and has a molecular weight of 73,000. The holotoxin in the cell membrane is a glycoprotein; however, it is the polysaccharide portion that is toxic. This inflammatory toxin increases vascular permeability and is capable of activating complement. Infusion of 0.9 milligram of toxin into the bovine udder resulted in the characteristic eosinophilic mastitis produced by Mycoplasma bovine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Geary, S J -- Tourtellotte, M E -- Cameron, J A -- New York, N.Y. -- Science. 1981 May 29;212(4498):1032-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233196" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bacterial Toxins/*isolation & purification/pharmacology ; Biological Assay ; Cattle ; Inflammation/chemically induced ; Kidney/drug effects ; Lymphocyte Activation ; Mice ; Mice, Inbred C57BL ; Mycoplasma/*analysis
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 66
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    Metkephamid, a systemically active analog of methionine enkephalin with potent opioid alpha-receptor activity (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-02-06
    Beschreibung: Metkephamid is an analog of methionine enkephalin that retains high affinity for the delta receptor and is a systemically active analgesic. Since it is at least 100 times more potent than morphine as an analgesic when placed directly into the lateral ventricles, and is 30 to 100 times more potent on the delta receptor and yet is roughly equipotent on the mu receptor in vitro, it is concluded that it probably produces analgesia by action on delta receptors as well as, or rather than, on mu receptors. It has less tendency to produce respiratory depression, tolerance, and physical dependence than standard analgesics, and it is presently undergoing clinical trial.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frederickson, R C -- Smithwick, E L -- Shuman, R -- Bemis, K G -- New York, N.Y. -- Science. 1981 Feb 6;211(4482):603-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6256856" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Analgesics ; Animals ; Brain/*drug effects ; Dose-Response Relationship, Drug ; Endorphins/*pharmacology ; *Enkephalin, Methionine/*analogs & derivatives ; Enkephalins/*pharmacology ; Humans ; Kinetics ; Male ; Mice ; Rats ; Receptors, Opioid/*drug effects ; Structure-Activity Relationship ; Substance-Related Disorders/etiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 67
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    Mammalian gonadal determination and gametogenesis (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-03-20
    Beschreibung: Although a relationship between the X and Y chromosomes and mammalian sexual development has long been recognized, a detailed understanding of this relation is still lacking. Recent advances in somatic cell genetics and recombinant DNA technology should provide the tools for solving this fundamental problem in developmental genetics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gordon, J W -- Ruddle, F H -- 1F32GM07959-01/GM/NIGMS NIH HHS/ -- GM09966-19/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1981 Mar 20;211(4488):1265-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6259727" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Chromosome Mapping ; Cloning, Molecular ; DNA/isolation & purification ; DNA Restriction Enzymes ; Disorders of Sex Development ; Female ; Fertility ; Genetic Markers ; H-Y Antigen/genetics ; Male ; Mammals/*genetics ; Mice ; Nucleic Acid Hybridization ; Oogenesis ; Ovary/embryology ; *Sex Chromosomes ; *Sex Determination Analysis ; *Sex Differentiation ; Spermatogenesis ; Testis/embryology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 68
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    Integration and stable germ line transmission of genes injected into mouse pronuclei (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-12-11
    Beschreibung: Genetic material has been successfully transferred into the genomes of newborn mice by injection of that material into pronuclei of fertilized eggs. Initial results indicated two patterns of processing the injected DNA: one in which the material was not integrated into the host genome, and another in which the injected genes became associated with high molecular weight DNA. These patterns are maintained through further development to adulthood. The evidence presented indicates the covalent association of injected DNA with host sequences, and transmission of such linked sequences in a Mendelian distribution to two succeeding generations of progeny.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gordon, J W -- Ruddle, F H -- GMO7959-01/GM/NIGMS NIH HHS/ -- GMO9966/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1981 Dec 11;214(4526):1244-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6272397" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Nucleus/*metabolism ; Crosses, Genetic ; DNA Restriction Enzymes ; DNA, Recombinant/*metabolism ; Embryo, Mammalian/*physiology ; Female ; *Genes ; Genetic Linkage ; Herpesviridae/enzymology ; Male ; Mice ; Nucleic Acid Hybridization ; Ovum/*physiology ; *Plasmids ; Pregnancy ; Sex Ratio ; Simian virus 40/enzymology ; Thymidine Kinase/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 69
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    Trisomic hemopoietic stem cells of fetal origin restore hemopoiesis in lethally irradiated mice (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-03-13
    Beschreibung: Autosomal trisomy in the mouse is invariably associated with fetal or early postnatal death. Hemopoietic stem cells from fetuses trisomic for chromosome 12 or 19 can be rescued by transplantation into lethally irradiated mice. These trisomic cells restore hemopoiesis, including lymphopoiesis, in the irradiated mice and establish a permanent and almost complete engraftment. There is no evidence that hemopoietic cells with trisomy 12 or 19 are cytogenetically unstable.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Herbst, E W -- Pluznik, D H -- Gropp, A -- Uthgennant, H -- New York, N.Y. -- Science. 1981 Mar 13;211(4487):1175-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7466390" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Survival ; Erythropoiesis ; *Hematopoiesis ; Hematopoietic Stem Cells/*cytology ; Karyotyping ; Lymphocytes/physiology ; Mice ; Radiation Chimera ; *Trisomy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 70
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    Fidelity of mammalian DNA polymerases (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-08-14
    Beschreibung: The fidelity of copying natural DNA in vitro with each of the three classes of eukaryotic DNA polymerases has been determined. DNA polymerases-beta and -gamma are highly inaccurate, catalyzing noncomplementary single-base substitution at a frequency between 1/3000 and 1/8000. DNA polymerase-alpha is substantially more accurate, with an error rate of 1/30,000. When the error rates of these DNA polymerases are considered in the context of the accuracy of DNA replicative processes in vivo, it seems likely that other factors must exist in mammalian cells which are involved in the accurate replication and maintenance of the genetic information.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kunkel, T A -- Loeb, L A -- New York, N.Y. -- Science. 1981 Aug 14;213(4509):765-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6454965" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bacteriophage phi X 174/genetics ; Cattle ; Cell Nucleus/enzymology ; DNA/biosynthesis ; *DNA Replication ; DNA-Directed DNA Polymerase/*metabolism ; Humans ; Mice ; Mitochondria/enzymology ; Rats ; Substrate Specificity ; Templates, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 71
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    Prostacyclin: a potent antimetastatic agent (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-06-12
    Beschreibung: Metastasis is the principal cause of failures to cure human cancers. Prostacyclin is a powerful antimetastatic agent against B16 amelanotic melanoma cells. This effect, which may result from the platelet antiaggregatory action of prostacyclin, is potentiated by a phosphodiesterase inhibitor. Inhibitors of prostacyclin synthesis increase metastasis. Prostacyclin and agents that may increase endogenous prostacyclin production or prolong its activity are suggested as new antimetastatic agents.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Honn, K V -- Cicone, B -- Skoff, A -- CA 29405/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Jun 12;212(4500):1270-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7015512" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Antineoplastic Agents ; Epoprostenol/*therapeutic use ; Lung Neoplasms/drug therapy/*secondary ; Melanoma/*drug therapy ; Mice ; *Neoplasm Metastasis ; Neoplasms, Experimental/drug therapy ; Prostaglandins/*therapeutic use ; Theophylline/therapeutic use
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 72
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    A coeruleo-spinal system in culture (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-07-17
    Beschreibung: In combined cultures of dissociated spinal neurons and explants from the region of locus coeruleus, rich catecholamine-containing fiber projections from the explant to the surrounding regions of spinal neurons were demonstrated by fluorescence histochemistry. Electrical stimulation of the explant resulted in slow depolarizing responses in many of the spinal neurons. Cells exhibiting this type of response were also usually depolarized by local application of noradrenaline, whereas other, unresponsive neurons usually were not. The depolarizing responses to electrical stimulation and to noradrenaline were both increased by depolarizing current injection and decreased by hyperpolarizing current. These and other data suggest that the depolarizing responses of the spinal neurons to explant stimulation are mediated by noradrenaline released from axons of locus coeruleus neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, K C -- Pun, R Y -- Hendelman, W J -- Nelson, P G -- New York, N.Y. -- Science. 1981 Jul 17;213(4505):355-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244621" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Newborn ; Desipramine/pharmacology ; Locus Coeruleus/cytology/drug effects/*physiology ; Membrane Potentials/drug effects ; Mice ; Microscopy, Fluorescence ; Neurons/physiology ; Norepinephrine/pharmacology ; Organ Culture Techniques ; Spinal Cord/cytology/drug effects/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 73
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    Globin gene transferred (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-09-25
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1981 Sep 25;213(4515):1488.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7280666" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *DNA, Recombinant ; Female ; Globins/*genetics ; Male ; Mice ; Plasmids ; Rabbits
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 74
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    Angiogenesis inhibitors link many diseases (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-06-19
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maugh, T H -- New York, N.Y. -- Science. 1981 Jun 19;212(4501):1374-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233226" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Angiogenesis Inducing Agents/*antagonists & inhibitors ; Angiogenesis Inhibitors ; Animals ; Cattle ; Cornea/blood supply/drug effects ; *Growth Inhibitors ; Humans ; Mice ; Neoplasms/analysis/blood supply/*drug therapy ; Neoplasms, Experimental/*blood supply/*drug therapy ; Proteins/pharmacology/*therapeutic use ; Rabbits ; Retina/analysis
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 75
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    Journey to the center of the cell: role of the receptosome (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-10-30
    Beschreibung: Fibroblasts contain a specific internalization pathway that carries hormones as well as some proteins and viruses from the cell surface to the cell interior. Initially, the ligands bind to mobile receptors that are randomly distributed on the cell surface. Next the ligand-receptor complexes are trapped and concentrated in specialized regions of the membrane termed bristle-coated pits. From the pit a smooth-walled vesicle containing the ligand forms and carries the ligand to the cell interior. Because of its role in receptor-mediated endocytosis, this vesicle has been termed a "receptosome."〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pastan, I H -- Willingham, M C -- New York, N.Y. -- Science. 1981 Oct 30;214(4520):504-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6170111" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Compartmentation ; Cells, Cultured ; Clathrin ; Cytoplasm/physiology ; *Endocytosis ; Exocytosis ; Fibroblasts/*physiology ; Ligands ; Membrane Fluidity ; Membrane Proteins/metabolism ; Mice ; Microscopy, Fluorescence ; Receptors, Drug/*physiology ; alpha-Macroglobulins/metabolism ; gamma-Glutamyltransferase/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 76
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    Warburg effect revisited: merger of biochemistry and molecular biology (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-07-17
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Racker, E -- Spector, M -- CA-08964/CA/NCI NIH HHS/ -- CA-14454/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 17;213(4505):303-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6264596" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adenosine Triphosphatases/*metabolism ; Animals ; Avian Sarcoma Viruses/metabolism ; Brain/*enzymology ; Carcinoma, Ehrlich Tumor/*metabolism ; Cell Line ; Cell Transformation, Neoplastic ; Electric Organ/enzymology ; Electrophorus ; *Glycolysis/drug effects ; Macromolecular Substances ; Mice ; Molecular Weight ; Neoplasms, Experimental/metabolism ; Ouabain/pharmacology ; Oxidation-Reduction ; Polyomavirus/metabolism ; Protein Kinases/metabolism ; Sodium-Potassium-Exchanging ATPase/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 77
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    Germplasm conservation (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-12-04
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Russell, E S -- New York, N.Y. -- Science. 1981 Dec 4;214(4525):1074, 1076.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6946561" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cats ; Disease Models, Animal ; Dogs ; *Genetic Engineering ; *Genetics, Medical ; Humans ; Mice ; Mutation ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 78
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    Skin tumor-promoting activity of benzoyl peroxide, a widely used free radical-generating compound (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-08-28
    Beschreibung: Benzoyl peroxide, a widely used free radical-generating compound, promoted both papillomas and carcinomas when it was topically applied to mice after 7,12-dimethylbenz[a]anthracene initiation. Benzoyl peroxide was inactive on the skin as a complete carcinogen or as a tumor initiator. A single topical application of benzoyl peroxide produced a marked epidermal hyperplasia and induced a large number of dark basal keratinocytes, effects similar to those produced by the potent tumor promoter 12-O-tetradecanoyl phorbol-13-acetate. Benzoyl peroxide, like other known tumor promoters, also inhibited metabolic cooperation (intercellular communication) in Chinese hamster cells. In view of these results caution should be recommended in the use of this and other free radical-generating compounds.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Slaga, T J -- Klein-Szanto, A J -- Triplett, L L -- Yotti, L P -- Trosko, K E -- CA 21104/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Aug 28;213(4511):1023-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6791284" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): 9,10-Dimethyl-1,2-benzanthracene ; Animals ; *Benzoyl Peroxide ; *Cocarcinogenesis ; Free Radicals ; Mice ; Neoplasms, Experimental ; *Peroxides ; Skin Neoplasms/*chemically induced ; Tetradecanoylphorbol Acetate
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 79
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    Lysosomal cathepsin B: correlation with metastatic potential (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-06-05
    Beschreibung: Although lysosomal enzymes are implicated in the processes of tumor invasion and metastasis, their cellular origin within the tumor is unclear. The activity of the lysosomal proteinase cathepsin B is significantly elevated in a variant of the B16 melanoma with high metastatic potential. The cathepsin B activity is localized to the lysosomes of the tumor cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sloane, B F -- Dunn, J R -- Honn, K V -- CA29405/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Jun 5;212(4499):1151-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233209" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cathepsin B ; Cathepsins/*metabolism ; Genetic Variation ; Hydrolases/metabolism ; Lysosomes/*enzymology ; Melanoma/*physiopathology ; Mice ; Neoplasm Metastasis/*physiopathology ; Neoplasms, Experimental/physiopathology ; Subcellular Fractions/enzymology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 80
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    Mapping the main immunogenic region and toxin-binding site of the nicotinic acetylcholine receptor (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-01-02
    Beschreibung: The alpha-chain of the nicotinic acetylcholine receptor carries the binding sites both for cholinergic ligands and for most experimentally induced or naturally occurring antibodies to the native receptor. By means of expression cloning in Escherichia coli, fusion proteins were derived from specific fragments of a complementary DNA encoding the mouse alpha-chain, allowing the mapping of the toxin-binding site to residues 160-216 and the main immunogenic region to residues 6-85. This approach permits the independent study of different functional domains of a complex receptor molecule and should be generally applicable to other proteins for which complementary DNA clones are available.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barkas, T -- Mauron, A -- Roth, B -- Alliod, C -- Tzartos, S J -- Ballivet, M -- New York, N.Y. -- Science. 1987 Jan 2;235(4784):77-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2432658" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Antibodies, Monoclonal/immunology ; Binding Sites ; Binding, Competitive ; Bungarotoxins/metabolism ; Cloning, Molecular ; Epitopes ; Humans ; Immunosorbent Techniques ; Ligands ; Mice ; Receptors, Nicotinic/genetics/*immunology ; Recombinant Fusion Proteins/immunology ; Species Specificity ; Structure-Activity Relationship
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 81
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    Differential expression of c-myb mRNA in murine B lymphomas by a block to transcription elongation (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-09-18
    Beschreibung: Expression of c-myb proto-oncogene messenger RNA (mRNA) and protein has been detected principally in tumors and in normal tissue of hematopoietic origin. In each hematopoietic lineage examined, expression of the c-myb gene is markedly downregulated during hematopoietic maturation. However, the mechanism by which differential expression of the c-myb gene is regulated is not known. In murine B-lymphoid tumor cell lines, the amount of steady-state c-myb mRNA is 10 to more than 100 times greater in pre-B cell lymphomas than in B cell lymphomas and plasmacytomas. The downregulation of c-myb mRNA correlates with events at the pre-B cell-B cell junction. Differential expression of c-myb mRNA levels detected between a pre-B cell lymphoma and a mature B cell lymphoma is now shown to be mediated by a block to transcription elongation in the first intron of the c-myb locus. In addition, this developmentally regulated difference in transcriptional activity is correlated with alterations in higher order chromatin structure as reflected by changes in the patterns of hypersensitivity to deoxyribonuclease I at the 5' end of the c-myb transcription unit. Regulation of transcription elongation may provide a more sensitive mechanism for rapidly increasing and decreasing mRNA levels in response to external stimuli than regulation of the initiation of transcription.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bender, T P -- Thompson, C B -- Kuehl, W M -- New York, N.Y. -- Science. 1987 Sep 18;237(4821):1473-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3498214" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; B-Lymphocytes ; Chromosome Mapping ; *Gene Expression Regulation ; Introns ; Lymphoma/*genetics ; Mice ; Nucleic Acid Hybridization ; *Peptide Chain Elongation, Translational ; *Proto-Oncogenes ; RNA, Messenger/*metabolism ; *Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 82
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    Oncogenes in radioresistant, noncancerous skin fibroblasts from a cancer-prone family (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-08-28
    Beschreibung: Li-Fraumeni syndrome is manifested in a variety of neoplasms that are transmitted in a dominantly inherited pattern. The noncancerous skin fibroblasts of family members exhibit a unique characteristic of being resistant to the killing effect of ionizing radiation. A three- to eightfold elevation in expression of c-myc and an apparent activation of c-raf-1 gene have been observed in these noncancerous skin fibroblasts. These results may provide insight into the heritable defect underlying the familial predisposition to a variety of cancers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chang, E H -- Pirollo, K F -- Zou, Z Q -- Cheung, H Y -- Lawler, E L -- Garner, R -- White, E -- Bernstein, W B -- Fraumeni, J W Jr -- Blattner, W A -- CA45158/CA/NCI NIH HHS/ -- CO7488/CO/NCI NIH HHS/ -- New York, N.Y. -- Science. 1987 Aug 28;237(4818):1036-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3616624" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Transformation, Neoplastic/radiation effects ; Cells, Cultured ; Fibroblasts/*radiation effects ; Humans ; Mice ; Mice, Nude ; Neoplastic Syndromes, Hereditary/*genetics ; Oncogenes/*radiation effects ; Pedigree ; *Radiation Tolerance ; Skin/cytology/*radiation effects ; Syndrome
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 83
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    erbB-2 is a potent oncogene when overexpressed in NIH/3T3 cells (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-07-10
    Beschreibung: A wide variety of human tumors contain an amplified or overexpressed erbB-2 gene, which encodes a growth factor receptor-like protein. When erbB-2 complementary DNA was expressed in NIH/3T3 cells under the control of the SV40 promoter, the gene lacked transforming activity despite expression of detectable levels of the erbB-2 protein. A further five- to tenfold increase in its expression under influence of the long terminal repeat of Moloney murine leukemia virus was associated with activation of erbB-2 as a potent oncogene. The high levels of the erbB-2 product associated with malignant transformation of NIH/3T3 cells were observed in human mammary tumor cells that overexpressed this gene. These findings demonstrate a new mechanism for acquisition of oncogenic properties by genes encoding growth factor receptor-like proteins and provide a functional basis for the role of their overexpression in the development of human malignancies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Di Fiore, P P -- Pierce, J H -- Kraus, M H -- Segatto, O -- King, C R -- Aaronson, S A -- New York, N.Y. -- Science. 1987 Jul 10;237(4811):178-82.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2885917" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Breast Neoplasms/genetics ; Cell Line ; *Cell Transformation, Neoplastic/genetics ; DNA/genetics ; Fibroblasts/*metabolism ; Gene Expression Regulation ; Genes, Viral ; Humans ; Mice ; Moloney murine leukemia virus/genetics ; Promoter Regions, Genetic ; Proto-Oncogene Proteins/biosynthesis/genetics/*physiology ; Rats ; Receptor, Epidermal Growth Factor ; Receptor, ErbB-2 ; Receptors, Cell Surface/genetics ; Recombinant Fusion Proteins/biosynthesis/genetics/physiology ; Simian virus 40/genetics ; Tumor Stem Cell Assay
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 84
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    Virus-induced increases in plasma corticosterone (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-12-04
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dunn, A J -- Powell, M L -- Gaskin, J M -- MH25486/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1987 Dec 4;238(4832):1423-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, College of Medicine, University of Florida, Gainesville 32610.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3685987" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Corticosterone/*blood ; Female ; Hypophysectomy ; Lymphocytes/physiology ; Male ; Mice ; Mice, Inbred Strains ; Models, Biological ; Newcastle Disease/*blood ; Pituitary-Adrenal System/*physiopathology ; Postoperative Complications/blood ; Stress, Physiological/blood
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 85
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    Transformation by oncogenes encoding protein kinases induces the metastatic phenotype (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-10-09
    Beschreibung: Oncogenes encoding serine/threonine or tyrosine kinases were introduced into the established rodent fibroblast cell line NIH 3T3 and tested for tumorigenic and metastatic behavior in T cell-deficient nude mice. Transforming oncogenes of the ras family were capable of converting fibroblast cell lines to fully metastatic tumors. Cell lines transformed by the kinase oncogenes mos, raf, src, fes, and fms formed experimental metastases and (in some cases) these genes were more efficient at metastatic conversion than a mutant ras gene. In contrast, cells transformed by either of two nuclear oncogenes, myc or p53, were tumorigenic when injected subcutaneously but were virtually nonmetastatic after intravenous injection. These data demonstrate that, in addition to ras, a structurally divergent group of kinase oncogenes can induce the metastatic phenotype.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Egan, S E -- Wright, J A -- Jarolim, L -- Yanagihara, K -- Bassin, R H -- Greenberg, A H -- New York, N.Y. -- Science. 1987 Oct 9;238(4824):202-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Manitoba Institute of Cell Biology, University of Manitoba, Winnipeg, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3659911" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Cell Transformation, Neoplastic ; Cells, Cultured ; *Genes ; Mice ; *Neoplasm Metastasis ; *Oncogenes ; Phenotype ; Protein Kinases/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 86
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    A defined medium for a fastidious Spiroplasma (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-07-31
    Beschreibung: A defined medium (H-1) was developed for cultivation of the suckling mouse cataract agent, Spiroplasma mirum, a fastidious member of the class Mollicutes that causes cataracts and chronic brain infection in inoculated neonate mice. The H-1 medium was used to show the importance of sphingomyelin as a growth factor for the culture of the spiroplasma in vitro. The growth of Spiroplasma mirum and the pathology it induces in sphingomyelin-rich tissues in vivo may be related to this dependency.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hackett, K J -- Ginsberg, A S -- Rottem, S -- Henegar, R B -- Whitcomb, R F -- New York, N.Y. -- Science. 1987 Jul 31;237(4814):525-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3603039" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cataract/microbiology ; *Culture Media ; Mice ; Spiroplasma/classification/*growth & development
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 87
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    Rheumatoid factor secretion from human Leu-1+ B cells (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-04-03
    Beschreibung: A human B cell subpopulation identifiable by the expression of the cell surface antigen Leu-1 (CD5) is responsible for most of the immunoglobulin M rheumatoid factor secreted in vitro after the cells are stimulated with Staphylococcus aureus. The ability of B cells bearing the Leu-1 marker (Leu-1+) to secrete rheumatoid factor is present early in development and extends to adulthood, since Leu-1+ B cells from cord blood and from peripheral blood lymphocytes of both normal adults and patients with certain autoimmune conditions secrete rheumatoid factor in comparable amounts. The neonatal enrichment of Leu-1+ B cells, the presence of Leu-1+ B cells in increased frequencies in patients with autoimmune disease, and the involvement of Leu-1+ B cells in autoantibody secretion suggest both developmental and functional homologies between this human B cell subpopulation and the murine Ly-1 B cell subpopulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hardy, R R -- Hayakawa, K -- Shimizu, M -- Yamasaki, K -- Kishimoto, T -- New York, N.Y. -- Science. 1987 Apr 3;236(4797):81-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3105057" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antigens, Differentiation, B-Lymphocyte ; Antigens, Differentiation, T-Lymphocyte ; Antigens, Surface/*immunology ; Autoimmune Diseases/*immunology ; B-Lymphocytes/*classification/immunology ; Cell Separation ; Fetal Blood/cytology ; Flow Cytometry ; Humans ; Immunoglobulin M/secretion ; Leukocyte Count ; Mice ; Rheumatoid Factor/*secretion
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 88
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    A Mab to a unique cerebellar neuron generated by immunosuppression and rapid immunization (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-07-03
    Beschreibung: The cerebellar cortex is perhaps the best characterized structure in the mammalian central nervous system. Although the major cerebellar cell classes are well known, a new class of cerebellar cortical neuron has now been identified with a monoclonal antibody (Mab) generated by a procedure for rapid immunization and selective immunosuppression of antibody responses. This procedure generates a high frequency of immunoglobulin G-class antibodies of desired specificity, and has allowed the generation of two antibodies that recognize subsets of cerebellar cortical neurons. One of these antibodies defines a previously unrecognized class of cerebellar neuron. The distribution and antigenic characteristics of this neuron suggest that it has a distinct role in cerebellar circuitry.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hockfield, S -- R01 EY06511/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1987 Jul 3;237(4810):67-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3603010" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Newborn/immunology ; Antibodies, Monoclonal/*immunology ; Cerebellar Cortex/cytology/*immunology ; Immune Tolerance ; Mice ; Mice, Inbred BALB C/immunology ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 89
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    Conservation of the Duchenne muscular dystrophy gene in mice and humans (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-10-16
    Beschreibung: A portion of the Duchenne muscular dystrophy (DMD) gene transcript from human fetal skeletal muscle and mouse adult heart was sequenced, representing approximately 25 percent of the total, 14-kb DMD transcript. The nucleic acid and predicted amino acid sequences from the two species are nearly 90 percent homologous. The amino acid sequence that is predicted from this portion of the DMD gene indicates that the protein product might serve a structural role in muscle, but the abundance and tissue distribution of the messenger RNA suggests that the DMD protein is not nebulin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoffman, E P -- Monaco, A P -- Feener, C C -- Kunkel, L M -- 2T 32 GM07753-07/GM/NIGMS NIH HHS/ -- HD18658/HD/NICHD NIH HHS/ -- R01 NS23740/NS/NINDS NIH HHS/ -- T32 GM007753/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1987 Oct 16;238(4825):347-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Genetics, Children's Hospital, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3659917" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Base Sequence ; DNA/*genetics ; DNA, Recombinant ; Exons ; Humans ; Male ; Mice ; Molecular Sequence Data ; Muscle Proteins/genetics ; Muscles/analysis/embryology ; Muscular Dystrophies/*genetics ; Muscular Dystrophy, Animal/*genetics ; Myocardium/analysis ; Nucleic Acid Hybridization ; RNA, Messenger/genetics ; X Chromosome
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 90
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    The raf oncogene is associated with a radiation-resistant human laryngeal cancer (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-08-28
    Beschreibung: In order to identify the genetic factors associated with the radiation-resistant human laryngeal carcinoma cell line (SQ-20B), tumor cell DNA was transfected into NIH/3T3 cells. A high incidence (six out of six) of raf sequences was found in transfected NIH/3T3 clones and the tumorigenic potential of SQ-20B DNA could be linked to genomic fragments that represent most of the kinase domain of human c-raf-1. An apparently unaltered 3.5-kilobase pair (kb) human c-raf transcript was identified in SQ-20B cells but was not observed in the transfected NIH/3T3 cell clones. Two new transcripts (4.2 kb and 2.6 kb) were found in tumorigenic clones; the large transcript was missing in a very poorly tumorigenic clone. Cytogenetic analysis indicated that the normal autosomes of chromosome 3 were absent in SQ-20B karyotypes and had formed apparently stable marker chromosomes. Unlike the recipient NIH/3T3 cell line, 30 percent of the transformed clone-1 metaphases had minute and double-minute chromosomes representative of amplified DNA sequences. The frequency of the c-raf-1 identification by NIH/3T3 transfection of SQ-20B DNA suggests the presence of some genetic abnormality within this locus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kasid, U -- Pfeifer, A -- Weichselbaum, R R -- Dritschilo, A -- Mark, G E -- CA425969/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1987 Aug 28;237(4818):1039-41.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3616625" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Line ; DNA, Neoplasm/genetics ; Humans ; Karyotyping ; Laryngeal Neoplasms/*genetics/radiotherapy ; Mice ; Mice, Nude ; Nucleic Acid Hybridization ; Oncogenes/*radiation effects ; Proto-Oncogenes/radiation effects ; *Radiation Tolerance
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 91
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    Ouabain resistance conferred by expression of the cDNA for a murine Na+, K+-ATPase alpha subunit (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-08-21
    Beschreibung: The molecular basis for the marked difference between primate and rodent cells in sensitivity to the cardiac glycoside ouabain has been established by genetic techniques. A complementary DNA encoding the entire alpha 1 subunit of the mouse Na+- and K+-dependent adenosine triphosphatase (ATPase) was inserted into the expression vector pSV2. This engineered DNA molecule confers resistance against 10(-4) M ouabain to monkey CV-1 cells. Deletion of sequences encoding the carboxyl terminus of the alpha 1 subunit abolish the activity of the complementary DNA. The ability to assay the biological activity of this ATPase in a transfection protocol permits the application of molecular genetic techniques to the analysis of structure-function relationships for the enzyme that establishes the internal Na+/K+ environment of most animal cells. The full-length alpha 1 subunit complementary DNA will also be useful as a dominant selectable marker for somatic cell genetic studies utilizing ouabain-sensitive cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kent, R B -- Emanuel, J R -- Ben Neriah, Y -- Levenson, R -- Housman, D E -- CA-07919/CA/NCI NIH HHS/ -- CA-26712/CA/NCI NIH HHS/ -- CA-38992/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1987 Aug 21;237(4817):901-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3039660" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cells, Cultured ; Cercopithecus aethiops ; DNA/genetics ; Drug Resistance ; Gene Expression Regulation ; Macromolecular Substances ; Mice ; Ouabain/*pharmacology ; Sodium-Potassium-Exchanging ATPase/antagonists & inhibitors/*genetics ; Species Specificity ; Structure-Activity Relationship ; Transfection
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 92
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    Chemical identification of a tumor-derived angiogenic factor (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-05-15
    Beschreibung: Neoplasms produce substances that induce blood vessel formation (angiogenesis). Fractions from ethanol extracts of the Walker 256 carcinoma were isolated by silica column chromatography and C18 reversed-phase high-performance liquid chromatography. Two of the isolated fractions induced neovascularization when tested in the rabbit corneal micropocket assay. One of the fractions was identified as nicotinamide by desorption-electron impact mass spectrometry, nuclear magnetic resonance spectroscopy, and gas chromatography-mass spectrometry. The second active fraction contained nicotinamide as part of a more complex, as yet unidentified, molecular arrangement. Microgram quantities of commercial nicotinamide induced neovascularization in the corneal micropocket assay and in the chick chorioallantoic membrane assay.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kull, F C Jr -- Brent, D A -- Parikh, I -- Cuatrecasas, P -- New York, N.Y. -- Science. 1987 May 15;236(4803):843-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2437656" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Angiogenesis Inducing Agents/*isolation & purification/pharmacology ; Animals ; Carcinoma 256, Walker/*physiopathology ; Cells, Cultured ; Chick Embryo ; Cornea/blood supply ; Endothelium/cytology/drug effects ; Gas Chromatography-Mass Spectrometry ; Growth Substances/*isolation & purification ; Magnetic Resonance Spectroscopy ; Mass Spectrometry ; Mice ; Neovascularization, Pathologic ; Niacinamide/isolation & purification/pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 93
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    Neuronal pp60c-src contains a six-amino acid insertion relative to its non-neuronal counterpart (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-07-24
    Beschreibung: Neuronal cells express a pp60c-src variant that displays an altered electrophoretic mobility and a different V8 peptide pattern relative to pp60c-src expressed in tissues of non-neuronal origin. To determine whether the neuronal form of pp60c-src is encoded by a brain-specific messenger RNA, a mouse brain complementary DNA (cDNA) library was screened with a chicken c-src probe and a 3.8-kilobase c-src cDNA clone was isolated. This clone encodes a 60-kilodalton protein that differs from chicken or human pp60c-src primarily in having six extra amino acids (Arg-Lys-Val-Asp-Val-Arg) within the NH2-terminal 16 kilodaltons of the molecule. S1 nuclease protection analysis confirmed that brain c-src RNA contains an 18-nucleotide insertion at the position of the extra six amino acids. This insertion occurs at a position that corresponds to a splice junction in the chicken and human c-src genes. The isolated c-src cDNA clone encodes a protein that displays an identical V8 peptide pattern to that observed in pp60c-src isolated from tissues of neuronal origin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez, R -- Mathey-Prevot, B -- Bernards, A -- Baltimore, D -- P0I CA38497/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1987 Jul 24;237(4813):411-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2440106" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Base Sequence ; Brain/enzymology ; Chickens ; Cloning, Molecular ; DNA/metabolism ; DNA Restriction Enzymes ; DNA Transposable Elements ; Humans ; Isoenzymes/*genetics ; Mice ; Neurons/*enzymology ; Protein Kinases/*genetics ; Proto-Oncogene Proteins/*genetics ; Proto-Oncogene Proteins pp60(c-src) ; Sequence Homology, Nucleic Acid ; Species Specificity
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 94
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    Cloned gene of Rickettsia rickettsii surface antigen: candidate vaccine for Rocky Mountain spotted fever (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-01-02
    Beschreibung: Two major protective antigens of Rickettsia rickettsii have been previously described. In this study, we cloned the gene encoding one of these antigens into Escherichia coli and tested the effectiveness of the recombinant-made product as a vaccine for Rocky Mountain spotted fever. A clone bank of R strain R. rickettsii DNA was made in E. coli K-12 by using the plasmid vector pBR322. Transformants were screened for their ability to make rickettsial antigens by reactivity with rabbit antibodies to R. rickettsii. One of the transformants, EM24(pGAM21), made a product reactive with two monoclonal antibodies that recognize a 155-kilodalton protein of R. rickettsii. One of the monoclonal antibodies was a member of a class of antibodies that react to heat-sensitive epitopes and protect mice injected with a potentially lethal dose of viable R. rickettsii. The cloned product contained this protective heat-sensitive epitope. In order to obtain enhanced expression, the gene was subcloned downstream of the lactose promoter on the plasmid vector pUC8. A sonic lysate of E. coli harboring the pUC8 subclone was used successfully as a vaccine to protect mice injected with a lethal dose of the viable R. rickettsii.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McDonald, G A -- Anacker, R L -- Garjian, K -- New York, N.Y. -- Science. 1987 Jan 2;235(4784):83-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3099387" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antigens/*genetics ; Antigens, Bacterial/*genetics ; Bacterial Proteins/genetics/immunology ; Bacterial Vaccines/*genetics ; Cloning, Molecular ; Genes, Bacterial ; Mice ; Rickettsia rickettsii/*genetics/immunology ; Rocky Mountain Spotted Fever/*prevention & control ; Vaccines, Synthetic/*genetics/immunology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 95
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    Mapping patterns of c-fos expression in the central nervous system after seizure (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-07-10
    Beschreibung: A dramatic and specific induction of c-fos was observed in identifiable neuronal populations in vivo after administration of the convulsant Metrazole. This effect was time- and dose-dependent and was abolished by prior treatment with the anticonvulsant drugs diazepam or pentobarbital. About 60 minutes after administration of Metrazole, c-fos messenger RNA reached a maximum and declined to basal levels after 180 minutes. A further decrease below that in normal brain was observed before a return to basal levels after 16 hours. While Metrazole still elicited seizures during this period, reinduction of c-fos was largely refractory. At 90 minutes, c-fos protein was observed in the nuclei of neurons in the dentate gyrus, and in the pyriform and cingulate cortices. Subsequently, c-fos protein appeared throughout the cortex, hippocampus, and limbic system. Thus, seizure activity results in increased c-fos gene expression in particular subsets of neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morgan, J I -- Cohen, D R -- Hempstead, J L -- Curran, T -- New York, N.Y. -- Science. 1987 Jul 10;237(4811):192-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3037702" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Brain Chemistry/drug effects ; DNA-Binding Proteins/biosynthesis/genetics ; Diazepam/pharmacology ; Fluorescent Antibody Technique ; Gene Expression Regulation ; Mice ; Mice, Inbred BALB C ; Neurons/metabolism ; Pentobarbital/pharmacology ; Pentylenetetrazole/antagonists & inhibitors/toxicity ; Proto-Oncogene Proteins/*biosynthesis/genetics ; Proto-Oncogene Proteins c-fos ; Receptors, GABA-A/drug effects ; Seizures/chemically induced/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 96
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    Selective inactivation of influenza C esterase: a probe for detecting 9-O-acetylated sialic acids (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-06-05
    Beschreibung: The influenza C virus (INF-C) hemagglutinin recognizes 9-O-acetyl-N-acetylneuraminic acid. The same protein contains the receptor-destroying enzyme (RDE), which is a 9-O-acetyl-esterase. The RDE was inactivated by the serine esterase inhibitor di-isopropyl fluorophosphate (DFP). [3H]DFP-labeling localized the active site to the heavy chain of the glycoprotein. DFP did not alter the hemagglutination or fusion properties of the protein, but markedly decreased infectivity of the virus, demonstrating that the RDE is important for primary infection. Finally, DFP-treated INF-C bound specifically and irreversibly to cells expressing 9-O-acetylated sialic acids. This provides a probe for a molecule that was hitherto very difficult to study.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Muchmore, E A -- Varki, A -- 1-K12-AM01408/AM/NIADDK NIH HHS/ -- R01 GM32373/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1987 Jun 5;236(4806):1293-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3589663" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetylation ; Animals ; Binding Sites ; Biological Assay ; Hemagglutination Tests ; Influenzavirus C/drug effects/*enzymology ; Isoflurophate/metabolism/*pharmacology ; Mice ; Orthomyxoviridae/*enzymology ; Protein Binding ; Sialic Acids/*analysis ; Viral Proteins/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 97
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    Allelic exclusion in transgenic mice that express the membrane form of immunoglobulin mu (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-05-15
    Beschreibung: Antibody-producing cells display a special form of regulation whereby each cell produces immunoglobulin from only one of its two sets of antibody genes. This phenomenon, called allelic exclusion, is thought to be mediated by the product of one heavy chain allele restricting the expression of the other. Heavy chains are synthesized in two molecular forms, secreted and membrane bound. In order to determine whether it is specifically the membrane-bound form of the immunoglobulin M (IgM) heavy chain (mu) that mediates this regulation, transgenic mice were created that carry a human mu chain gene altered so that it can only direct the synthesis of the membrane-bound protein. The membrane-bound form of the human mu chain was made by most of the B cells in these animals as measured by assays of messenger RNA and surface immunoglobulins. Further, the many B cells that express the human gene do not express endogenous mouse IgM, and the few B cells that express endogenous mouse mu do not express the transgene. Thus, the membrane-bound form of the mu chain is sufficient to mediate allelic exclusion. In addition, the molecular structures recognized for this purpose are conserved between human and mouse systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nussenzweig, M C -- Shaw, A C -- Sinn, E -- Danner, D B -- Holmes, K L -- Morse, H C 3rd -- Leder, P -- New York, N.Y. -- Science. 1987 May 15;236(4803):816-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3107126" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Alleles ; Animals ; Antibody-Producing Cells/*immunology ; Gene Expression Regulation ; *Genes ; Humans ; Immunoglobulin M/genetics ; Immunoglobulin mu-Chains/*genetics ; Mice ; Mice, Inbred Strains ; RNA, Messenger/genetics ; Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 98
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    Pancreatic neoplasia induced by SV40 T-antigen expression in acinar cells of transgenic mice (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-10-09
    Beschreibung: Three lines of transgenic mice were produced that develop pancreatic neoplasms as a consequence of expression of an elastase I-SV40 T-antigen fusion gene in the acinar cells. A developmental analysis suggests at least a two-stage process in the ontogeny of this disease. The first stage is a T antigen-induced, preneoplastic state characterized by a progression from hyperplasia to dysplasia of the exocrine pancreas, by an increased percentage of tetraploid cells, and by an arrest in acinar cell differentiation. The second stage is characterized by the formation of tumor nodules that appear to be monoclonal, because they have discrete aneuploid DNA contents. The cells within the nodules as compared to normal pancreatic tissue have less total RNA by a factor of 5, less pancreas-specific messenger RNA by a factor of about 50, and increased levels of T-antigen messenger RNA. A tumor cell line has been derived that retains both pancreatic and neoplastic properties.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ornitz, D M -- Hammer, R E -- Messing, A -- Palmiter, R D -- Brinster, R L -- GM-07266/GM/NIGMS NIH HHS/ -- HD-09172/HD/NICHD NIH HHS/ -- NS-00956/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1987 Oct 9;238(4824):188-93.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute Laboratory, University of Washington, Seattle 98195.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2821617" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antigens, Polyomavirus Transforming/*genetics ; *Cell Transformation, Neoplastic ; DNA Restriction Enzymes ; Genes ; Genes, Viral ; Mice ; Mice, Transgenic ; Pancreatic Elastase/genetics ; Pancreatic Neoplasms/genetics/*microbiology/pathology ; Protein Kinases/*genetics ; RNA, Messenger/genetics ; Simian virus 40/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 99
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    Zinc selectively blocks the action of N-methyl-D-aspartate on cortical neurons (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-05-01
    Beschreibung: Large amounts of zinc are present in synaptic vesicles of mammalian central excitatory boutons and may be released during synaptic activity, but the functional significance of the metal for excitatory neurotransmission is currently unknown. Zinc (10 to 1000 micromolar) was found to have little intrinsic membrane effect on cortical neurons, but invariably produced a zinc concentration-dependent, rapid-onset, reversible, and selective attenuation of the membrane responses to N-methyl-D-aspartate, homocysteate, or quinolinate. In contrast, zinc generally potentiated the membrane responses to quisqualate or alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionate and often did not affect the response to kainate. Zinc also attenuated N-methyl-D-aspartate receptor-mediated neurotoxicity but not quisqualate or kainate neurotoxicity. The ability of zinc to specifically modulate postsynaptic neuronal responses to excitatory amino acid transmitters, reducing N-methyl-to-aspartate receptor-mediated excitation while often increasing quisqualate receptor-mediated excitation, is proposed to underlie its normal function at central excitatory synapses and furthermore could be relevant to neuronal cell loss in certain disease states.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peters, S -- Koh, J -- Choi, D W -- NS07280/NS/NINDS NIH HHS/ -- NS21628/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1987 May 1;236(4801):589-93.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2883728" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Aspartic Acid/*analogs & derivatives/pharmacology ; Cell Membrane/physiology ; Cerebral Cortex/*cytology ; Drug Interactions ; Electrophysiology ; Homocysteine/analogs & derivatives/pharmacology ; Ibotenic Acid/analogs & derivatives/pharmacology ; Kainic Acid/pharmacology ; Magnesium/pharmacology ; Membrane Potentials/drug effects ; Mice ; N-Methylaspartate ; Neurons/drug effects/*physiology ; Oxadiazoles/pharmacology ; Quinolinic Acid ; Quinolinic Acids/pharmacology ; Quisqualic Acid ; Receptors, N-Methyl-D-Aspartate ; Receptors, Neurotransmitter/drug effects/physiology ; Zinc/*pharmacology ; alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 100
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    Avian v-myc replaces chromosomal translocation in murine plasmacytomagenesis (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1987-02-13
    Beschreibung: Deregulation of c-myc expression in association with chromosomal translocations occurs in over 95% of murine plasmacytomas, rat immunocytomas, and human Burkitt lymphomas. Infection with a murine retrovirus (J-3) containing an avian v-myc rapidly induced plasmacytomas in pristane-primed BALB/cAn mice. Only 17% of the induced plasmacytomas that were karyotyped showed the characteristic chromosomal translocations involving the c-myc locus. Instead, all of the translocation-negative tumors demonstrated characteristic J-3 virus integration sites that were actively transcribed. Thus, the high levels of v-myc expression have replaced the requirement for chromosomal translocation in plasmacytomagenesis and accelerated the process of transformation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Potter, M -- Mushinski, J F -- Mushinski, E B -- Brust, S -- Wax, J S -- Wiener, F -- Babonits, M -- Rapp, U R -- Morse, H C 3rd -- New York, N.Y. -- Science. 1987 Feb 13;235(4790):787-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3810165" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Birds ; *Cell Transformation, Neoplastic ; *Genes, Viral ; Mice ; Mice, Inbred BALB C ; Mice, Inbred Strains ; Moloney murine leukemia virus/*genetics ; Nucleic Acid Hybridization ; *Oncogenes ; Plasmacytoma/genetics/*microbiology ; Retroviridae/*genetics ; Transcription, Genetic ; *Translocation, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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