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  • Pregnancy  (147)
  • Chemical Engineering
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  • General Chemistry
  • American Association for the Advancement of Science (AAAS)  (181)
  • 1980-1984  (181)
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  • 1
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-07-20
    Beschreibung: The iron-carbon monoxide stretching mode and the iron-carbon-oxygen bending mode in carbon monoxide-bound cytochrome oxidase have been assigned at 520 and 578 cm-1, respectively. The frequencies, widths, and intensities of these modes show that the Fe-C-O grouping in carbon monoxide-cytochrome a3 is linear but tilted from the normal to the heme plane; that the iron-histidine bond in both five- and six-coordinate cytochrome a3 is strained; and that the carbon monoxide and the proximal histidine each have characteristic, well-defined orientations in all molecules. These data can account for the binding affinities of carbon monoxide and dioxygen under physiological conditions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Argade, P V -- Ching, Y C -- Rousseau, D L -- New York, N.Y. -- Science. 1984 Jul 20;225(4659):329-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6330890" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Carbon Monoxide/metabolism ; Cattle ; Chemical Phenomena ; Chemistry ; Electron Transport Complex IV/*metabolism ; Myoglobin/metabolism ; Oxidation-Reduction ; Oxygen/metabolism ; Spectrum Analysis, Raman
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 2
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-09-21
    Beschreibung: The nervous system of mammals retains throughout the animals' life-span the ability to modify the number, nature, and level of activity of its synapses. Synaptic plasticity is most evident after injury to the nervous system, and the cellular and molecular mechanisms that make it possible are beginning to be understood. Transplantation of brain tissue provides a powerful approach for studying mechanisms of synaptic plasticity. In turn, understanding the response of the central nervous system to injury can be used to optimize transplant survival and integration with the host brain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cotman, C W -- Nieto-Sampedro, M -- AG 00538/AG/NIA NIH HHS/ -- MH 19691/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1984 Sep 21;225(4668):1287-94.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6382610" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aging ; Animals ; Brain/*growth & development/*physiology ; Cerebral Cortex/physiology/transplantation ; Denervation ; Female ; Humans ; Nerve Regeneration ; *Neuronal Plasticity ; Peripheral Nerves/physiology ; Pregnancy ; Synapses/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 3
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-08-10
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dickson, D -- New York, N.Y. -- Science. 1984 Aug 10;225(4662):606.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6740327" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Embryo Research ; Embryo Transfer ; Embryo, Mammalian ; Female ; Fertilization in Vitro ; *Government Regulation ; Great Britain ; Humans ; *Legislation, Medical ; Oocyte Donation ; Pregnancy ; special license be required for all embryo experimentation and that any ; unlicensed research be considered a criminal offense. Regulation would be by a ; new statutory body responsible for monitoring in vitro fertilization research and ; various types of fertility treatments. Surrogate motherhood would be prohibited. ; Reservations expressed by professional groups as well as by some committee ; members about the restrictions reflect legal and social problems surrounding the ; uses of human embryos.
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 4
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-01-20
    Beschreibung: Peptide synthesis can be used for elucidating the roles of secondary structures in the specificity of hormones, antigens, and toxins. Intermediate sized peptides with these activities assume amphiphilic secondary structures in the presence of membranes. When models are designed to optimize the amphiphilicity of the secondary structure, stronger interactions can be observed with the synthetic peptides than with the naturally occurring analogs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaiser, E T -- Kezdy, F J -- HL-18577/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1984 Jan 20;223(4633):249-55.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6322295" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Apolipoprotein A-I ; Apolipoproteins ; Binding Sites ; Calcitonin ; Chemical Phenomena ; Chemistry ; Corticotropin-Releasing Hormone ; Endorphins ; Glucagon ; Growth Hormone-Releasing Hormone ; *Hormones/pharmacology ; Lipoproteins, HDL ; Melitten ; Models, Structural ; *Peptides/chemical synthesis/metabolism/pharmacology ; Protein Conformation ; Structure-Activity Relationship ; beta-Endorphin
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 5
    Publikationsdatum: 1984-08-31
    Beschreibung: Adult female hypogonadal mice, in whom hypogonadism is secondary to a genetic deficiency in hypothalamic gonadotropin-releasing hormone (GnRH), are infertile. Mating, pregnancy, and delivery of healthy litters were achieved after transplantation of normal fetal preoptic area tissue, a major site of GnRH-containing cell bodies, into the third ventricle of adult female hypogonadal mice. Immunocytochemistry revealed GnRH-containing neurons in the grafts and GnRH-containing processes extending to the lateral median eminence of the host brains.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibson, M J -- Krieger, D T -- Charlton, H M -- Zimmerman, E A -- Silverman, A J -- Perlow, M J -- 1RO1NS20335/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1984 Aug 31;225(4665):949-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6382608" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Brain Chemistry ; Cerebral Ventricles/pathology ; *Copulation ; Female ; Hypogonadism/genetics/pathology/*physiopathology ; Infertility, Female/etiology/*therapy ; Male ; Mice ; Neurons/analysis ; Ovulation ; Pituitary Hormone-Releasing Hormones/analysis/*deficiency ; Pregnancy ; Preoptic Area/*transplantation ; *Reproduction
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 6
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-10-19
    Beschreibung: Fourier transform mass spectrometry will play an important role in the future because of its unique combination of high mass resolution, high upper mass limit, and multichannel advantage. These features have already found application in gas chromatography-mass spectrometry, multiphoton ionization, laser desorption, and secondary ion mass spectrometry. However, its most notable feature is the ability to store ions. This characteristic, when combined with the others, will allow expeditious study of the interaction of gas-phase ions with both photons (photodissociation) and neutral molecules, and the convenient application of this fundamental information for chemical analysis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gross, M L -- Rempel, D L -- 2-8423576/PHS HHS/ -- New York, N.Y. -- Science. 1984 Oct 19;226(4672):261-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6385250" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Chemical Phenomena ; Chemistry ; *Fourier Analysis ; Ions ; Lasers ; *Mass Spectrometry/instrumentation/methods
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 7
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-07-20
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G -- New York, N.Y. -- Science. 1984 Jul 20;225(4659):302-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6740312" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Female ; Fetus/*physiology ; Humans ; Infant, Newborn ; Infant, Premature ; Learning/*physiology ; Male ; Pregnancy ; Rats
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 8
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-08-31
    Beschreibung: High-resolution carbon-13 nuclear magnetic resonance (NMR) spectra of enzyme-inhibitor and enzyme-substrate complexes provide detailed structural and stereochemical information on the mechanism of enzyme action. The proteases trypsin and papain are shown to form tetrahedrally coordinated complexes and acyl derivatives with a variety of compounds artificially enriched at the site or sites of interest. These results are compared with the structural information derived from x-ray diffraction. Detailed NMR studies have provided a clearer picture of the ionization state of the residues participating in enzyme-catalyzed processes than other more classical techniques. The dynamics of enzymic catalysis can be observed at sub-zero temperatures by a combination of cryoenzymology and carbon-13 NMR spectroscopy. With these powerful techniques, transient, covalently bound intermediates in enzyme-catalyzed reactions can be detected and their structures rigorously assigned.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mackenzie, N E -- Malthouse, J P -- Scott, A I -- New York, N.Y. -- Science. 1984 Aug 31;225(4665):883-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6433481" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Binding Sites ; Carbon Isotopes ; Carboxypeptidases/metabolism ; Carboxypeptidases A ; Catalysis ; Chemical Phenomena ; Chemistry ; Coenzymes/*metabolism ; Endopeptidases/metabolism ; Enzymes/*metabolism ; Freezing ; Fructose-Bisphosphate Aldolase/metabolism ; Magnetic Resonance Spectroscopy ; Papain/metabolism ; Pepsin A/metabolism ; Peptide Hydrolases/*metabolism ; Protease Inhibitors ; Pterins/metabolism ; Pyridoxal Phosphate/metabolism ; Serine Endopeptidases
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 9
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-01-27
    Beschreibung: Exposing pregnant rats to carbon monoxide (150 parts per million) produced only minor reductions in the birth weights of the pups and gave no evidence of overt teratogenesis. However, behavioral evaluation of learning and memory processes in a two-way avoidance task suggested a functional deficit in the central nervous system of the exposed offspring. Multiple dependent measures and specific control groups confirmed that this deficit was independent of nonassociative or motivational alterations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mactutus, C F -- Fechter, L D -- ES 01589/ES/NIEHS NIH HHS/ -- ES 07094/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1984 Jan 27;223(4634):409-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6691152" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Avoidance Learning/*drug effects ; Birth Weight/drug effects ; Carbon Monoxide/*toxicity ; Conditioning (Psychology) ; Female ; Male ; Memory/*drug effects ; Pregnancy ; *Prenatal Exposure Delayed Effects ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 10
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-03-09
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maugh, T H 2nd -- New York, N.Y. -- Science. 1984 Mar 9;223(4640):1051-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6695193" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Air Pollutants ; *Atmosphere ; Carbon Tetrachloride ; Chemical Phenomena ; Chemistry ; *Chlorofluorocarbons, Methane ; Free Radicals ; Nitrogen Dioxide ; Nitrous Oxide ; Oxygen ; *Ozone ; Photochemistry ; Risk ; Singlet Oxygen ; Trichloroethanes ; Ultraviolet Rays
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 11
    Publikationsdatum: 1984-10-19
    Beschreibung: Pyrolysis mass spectrometry in combination with computerized multivariate statistical analysis enables qualitative and quantitative analysis of nonvolatile organic materials containing molecular assemblies of a complexity and size far beyond the capabilities of direct mass spectrometry. The state of the art in pyrolysis mass spectrometry techniques is illustrated through specific applications, including structural determination and quality control of synthetic polymers, quantitative analysis of polymer mixtures, classification and structural characterization of fossil organic matter, and nonsupervised numerical extraction of component patterns from complex biological samples.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meuzelaar, H L -- Windig, W -- Harper, A M -- Huff, S M -- McClennen, W H -- Richards, J M -- New York, N.Y. -- Science. 1984 Oct 19;226(4672):268-74.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6484572" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Biochemical Phenomena ; Biochemistry ; Chemical Phenomena ; Chemistry ; Coal ; Enterobacteriaceae/analysis/isolation & purification ; Hot Temperature ; Mass Spectrometry/*methods ; Polymers
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 12
    Publikationsdatum: 1984-08-31
    Beschreibung: The splicing of messenger RNA precursors in vitro proceeds through an intermediate that has the 5' end of the intervening sequence joined to a site near the 3' splice site. This lariat structure, which has been characterized for an adenovirus 2 major late transcript, has a branch point, with 2'-5' and 3'-5' phosphodiester bonds emanating from a single adenosine residue. The excised intervening sequence retains the branch site and terminates in a guanosine residue with a 3' hydroxyl group. The phosphate group at the splice junction between the two exons originates from the 3' splice site at the precursor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Padgett, R A -- Konarska, M M -- Grabowski, P J -- Hardy, S F -- Sharp, P A -- P01-CA14051/CA/NCI NIH HHS/ -- P01-CA26717/CA/NCI NIH HHS/ -- R01-GM32467/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1984 Aug 31;225(4665):898-903.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6206566" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adenoviruses, Human/metabolism ; Base Sequence ; Chemical Phenomena ; Chemistry ; Nucleic Acid Conformation ; Nucleic Acid Precursors/analysis/*metabolism ; Oligoribonucleotides/metabolism ; Phosphates/metabolism ; RNA/analysis/*metabolism ; RNA Precursors ; *RNA Splicing ; RNA, Messenger/analysis/*metabolism ; RNA, Viral/analysis/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 13
    Publikationsdatum: 1984-02-17
    Beschreibung: Cell-free conditioned media from human T cells transformed by human T-cell leukemia-lymphoma virus (HTLV-I) were tested for the production of soluble biologically active factors, including several known lymphokines. The cell lines used were established from patients with T-cell leukemia-lymphoma and from human umbilical cord blood and bone marrow leukocytes transformed by HTLV-I in vitro. All of the cell lines liberated constitutively one or more of the 12 biological activities assayed. These included macrophage migration inhibitory factor (MIF), leukocyte migration inhibitory factor (LIF), leukocyte migration enhancing factor (MEF), macrophage activating factor (MAF), differentiation inducing factor (DIF), colony stimulating factor (CSF), eosinophil growth and maturation activity (eos. GMA), fibroblast activating factor (FAF), gamma-interferon and, in rare instances, T-cell growth factor (TCGF). Some cell lines produced interleukin 3 (IL-3), platelet-derived growth factor (PDGF), or B-cell growth factors (BCGF). Such cells should prove useful for the production of lymphokines and as sources of specific messenger RNA's for their genetic cloning.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Salahuddin, S Z -- Markham, P D -- Lindner, S G -- Gootenberg, J -- Popovic, M -- Hemmi, H -- Sarin, P S -- Gallo, R C -- New York, N.Y. -- Science. 1984 Feb 17;223(4637):703-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6320367" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Antibodies, Monoclonal ; Antigens, Neoplasm/analysis ; Bone Marrow ; Cell Line ; *Cell Transformation, Neoplastic ; Cells, Cultured ; Deltaretrovirus/*genetics ; Female ; Humans ; Leukemia/*microbiology ; Lymphokines/*biosynthesis ; Lymphoma/*microbiology ; Phenotype ; Pregnancy ; T-Lymphocytes/*immunology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 14
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-05-11
    Beschreibung: The mechanism of lipid peroxidation and the manner in which antioxidants function is reviewed. beta-Carotene is a purported anticancer agent, which is believed by some to have antioxidant action of a radical-trapping type. However, definitive experimental support for such action has been lacking. New experiments in vitro show that beta-carotene belongs to a previously unknown class of biological antioxidants. Specifically, it exhibits good radical-trapping antioxidant behavior only at partial pressures of oxygen significantly less than 150 torr, the pressure of oxygen in normal air. Such low oxygen partial pressures are found in most tissues under physiological conditions. At higher oxygen pressures, beta-carotene loses its antioxidant activity and shows an autocatalytic, prooxidant effect, particularly at relatively high concentrations. Similar oxygen-pressure-dependent behavior may be shown by other compounds containing many conjugated double bonds.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Burton, G W -- Ingold, K U -- New York, N.Y. -- Science. 1984 May 11;224(4649):569-73.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6710156" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Antioxidants/*metabolism ; Carotenoids/*metabolism ; Chemical Phenomena ; Chemistry ; Free Radicals ; Humans ; Linoleic Acids/metabolism ; *Lipid Metabolism ; Oxidation-Reduction ; Oxygen/metabolism ; Partial Pressure ; Peroxides/metabolism ; Tetrahydronaphthalenes/metabolism ; beta Carotene
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 15
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-11-02
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holden, C -- New York, N.Y. -- Science. 1984 Nov 2;226(4674):521.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6387909" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): 2,4,5-Trichlorophenoxyacetic Acid/adverse effects ; 2,4-Dichlorophenoxyacetic Acid/adverse effects ; Combat Disorders/psychology ; Female ; Humans ; Pregnancy ; Tetrachlorodibenzodioxin/adverse effects ; *Twins/psychology ; United States ; *United States Department of Veterans Affairs ; *Veterans ; Vietnam
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 16
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-02-24
    Beschreibung: Human oocytes were collected by laparoscopy and fertilized and cultured in vitro. Human chorionic gonadotropin was detected in the medium surrounding two embryos cultured for more than 7 days after fertilization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fishel, S B -- Edwards, R G -- Evans, C J -- New York, N.Y. -- Science. 1984 Feb 24;223(4638):816-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6546453" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Blastocyst/*physiology ; Chorionic Gonadotropin/*secretion ; *Embryonic Development ; Female ; Fertilization in Vitro ; Humans ; Pregnancy ; Trophoblasts/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 17
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-03-16
    Beschreibung: Yeast phenylalanine transfer RNA was subjected to a 12-picosecond molecular dynamics simulation. The principal features of the x-ray crystallographic analysis are reproduced, and the amplitudes of atomic displacements appear to be determined by the degree of exposure of the atoms. An analysis of the hydrogen bonds shows a correlation between the average length of a bond and the fluctuation in that length and reveals a rocking motion of bases in Watson-Crick guanine X cytosine base pairs. The in-plane motions of the bases are generally of larger amplitude than the out-of-plane motions, and there are correlations in the motions of adjacent bases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harvey, S C -- Prabhakaran, M -- Mao, B -- McCammon, J A -- New York, N.Y. -- Science. 1984 Mar 16;223(4641):1189-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6560785" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Chemical Phenomena ; Chemistry ; Computers ; Cytosine ; Guanine ; Hydrogen Bonding ; Nucleic Acid Conformation ; *RNA, Fungal ; *RNA, Transfer, Amino Acyl ; Yeasts/analysis
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 18
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-03-16
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holden, C -- New York, N.Y. -- Science. 1984 Mar 16;223(4641):1157.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6367037" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Combat Disorders/epidemiology ; Female ; Humans ; Male ; *Military Medicine ; Pregnancy ; *Twins ; United States ; United States Department of Veterans Affairs ; *Veterans ; Vietnam ; *Warfare
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 19
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-06-01
    Beschreibung: Administration of haloperidol, a common neuroleptic, to pregnant or lactating rats impaired the masculine sex behavior of their male offspring. Prenatal haloperidol did not affect testosterone concentrations in fetuses. Maternal administration of apomorphine, a dopamine agonist, and of alpha-methyl-p-tyrosine, an inhibitor of dopamine synthesis, also demasculinized male offspring. In both experiments other behaviors and developmental milestones were unaffected. Perinatal haloperidol, apomorphine, and alpha-methyl-p-tyrosine did not lower testosterone in adulthood. These drugs may act directly on neurons that control masculine behavior without lowering testosterone prenatally or in adulthood.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hull, E M -- Nishita, J K -- Bitran, D -- Dalterio, S -- 2S07RR0706618/RR/NCRR NIH HHS/ -- HD 16329/HD/NICHD NIH HHS/ -- MH 3593901/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1984 Jun 1;224(4652):1011-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6719125" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Newborn ; Apomorphine/pharmacology ; Dopamine/*physiology ; Ejaculation/drug effects ; Female ; Haloperidol/*pharmacology ; Male ; Methyltyrosines/pharmacology ; Pregnancy ; Prenatal Exposure Delayed Effects ; Rats ; Receptors, Dopamine/drug effects ; Sexual Behavior, Animal/*drug effects/physiology ; Testosterone/blood
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 20
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-02-10
    Beschreibung: Regression of the fetal rat Mullerian duct in vitro was stimulated by sodium fluoride in the absence of Mullerian inhibiting substance. The action of Mullerian inhibiting substance was inhibited by sodium vanadate, adenosine 5'-triphosphate, and several related nucleotides in the presence of manganese ions. Epidermal growth factor specifically inhibited the substance, but only with manganese ions present. Insulin, platelet-derived growth factor, and nerve growth factor had no effect. These results suggest that dephosphorylation of membrane proteins mediates the action of Mullerian inhibiting substance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hutson, J M -- Fallat, M E -- Kamagata, S -- Donahoe, P K -- Budzik, G P -- CA-17393/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1984 Feb 10;223(4636):586-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6607531" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Anti-Mullerian Hormone ; Cations, Divalent ; Dimethyl Sulfoxide/pharmacology ; Epidermal Growth Factor/pharmacology ; Female ; *Glycoproteins ; *Growth Inhibitors ; Kinetics ; Male ; Membrane Proteins/metabolism ; Mullerian Ducts/drug effects/*physiology ; Phosphorylation ; Pregnancy ; Rats ; Sodium Fluoride/pharmacology ; Testicular Hormones/*physiology ; Vanadates ; Vanadium/pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 21
    Publikationsdatum: 1984-11-16
    Beschreibung: Sequence-dependent variations in DNA revealed by x-ray crystallographic studies have suggested that certain DNA-reactive drugs may react preferentially with defined sequences in DNA. Drugs that wind around the helix and reside within one of the grooves of DNA have perhaps the greatest chance of recognizing sequence-dependent features of DNA. The antitumor antibiotic CC-1065 covalently binds through N-3 of adenine and resides within the minor groove of DNA. This drug overlaps with five base pairs for which a high sequence specificity exists.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hurley, L H -- Reynolds, V L -- Swenson, D H -- Petzold, G L -- Scahill, T A -- New York, N.Y. -- Science. 1984 Nov 16;226(4676):843-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6494915" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Antibiotics, Antineoplastic/*metabolism ; *Base Sequence ; Binding Sites ; Chemical Phenomena ; Chemistry ; DNA/*metabolism ; *Indoles ; Leucomycins/*metabolism ; Molecular Conformation ; X-Ray Diffraction
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 22
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-09-07
    Beschreibung: Several naturally occurring and synthetic flavones were found to inhibit the aromatization of androstenedione and testosterone to estrogens catalyzed by human placental and ovarian microsomes. These flavones include (in order of decreasing potency) 7,8-benzoflavone, chrysin, apigenin, flavone, flavanone, and quercetin; 5,6-benzoflavone was not inhibitory. 7,8-Benzoflavone and chrysin were potent competitive inhibitors and induced spectral changes in the aromatase cytochrome P-450 indicative of substrate displacement. Flavones may thus compete with steroids in their interaction with certain monooxygenases and thereby alter steroid hormone metabolism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kellis, J T Jr -- Vickery, L E -- AM1005/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1984 Sep 7;225(4666):1032-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6474163" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Androstenedione/*metabolism ; *Aromatase Inhibitors ; Benzoflavones/metabolism/pharmacology ; Binding Sites ; Binding, Competitive ; Female ; Flavonoids/metabolism/*pharmacology ; Humans ; Kinetics ; Microsomes/enzymology ; Ovary/*enzymology ; Oxidoreductases/*antagonists & inhibitors ; Placenta/*enzymology ; Pregnancy ; Testosterone/*metabolism ; beta-Naphthoflavone
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 23
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-11-16
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1984 Nov 16;226(4676):823.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6494912" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Female ; Mice ; Mice, Mutant Strains/*genetics ; Neoplasms, Experimental/*genetics ; *Oncogenes ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 24
    Publikationsdatum: 1984-05-25
    Beschreibung: Saccharin preference and performance in a Lashley III maze were found to be altered in adult male and female rats that had been exposed to alcohol during gestation. Specifically, the sexual dimorphism normally observed in both behaviors was absent in fetal alcohol-exposed animals. The lack of sexual dimorphism appeared to result from a masculinization of the exposed females and a feminization of the exposed males.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McGivern, R F -- Clancy, A N -- Hill, M A -- Noble, E P -- AA-03513/AA/NIAAA NIH HHS/ -- AA05174/AA/NIAAA NIH HHS/ -- MH08645/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1984 May 25;224(4651):896-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6719121" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Age Factors ; Animals ; Discrimination Learning/drug effects ; Ethanol/*adverse effects ; Female ; Food Preferences/drug effects ; Gestational Age ; Male ; Pregnancy ; *Prenatal Exposure Delayed Effects ; Rats ; Saccharin ; *Sex Characteristics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 25
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-06-15
    Beschreibung: A new class of synthetic antifungal agents, the allylamines , has been developed by modification of naftifine , a topical antimycotic. SF 86-327, the most effective of these compounds so far, is highly active in vitro against a wide range of fungi and exceeds clinical standards in the oral and topical treatment of guinea pig dermatophytoses. SF 86-327 is a powerful specific inhibitor of fungal squalene epoxidase, a key enzyme in sterol biosynthesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Petranyi, G -- Ryder, N S -- Stutz, A -- New York, N.Y. -- Science. 1984 Jun 15;224(4654):1239-41.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6547247" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Allylamine/analogs & derivatives/*chemical synthesis/pharmacology ; Amines/*chemical synthesis ; Animals ; Antifungal Agents/*chemical synthesis/pharmacology ; Chemical Phenomena ; Chemistry ; Dermatomycoses/drug therapy ; Fungi/*drug effects/enzymology ; Guinea Pigs ; Naphthalenes/chemical synthesis/pharmacology ; Oxygenases/*antagonists & inhibitors ; Squalene Monooxygenase
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 26
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-11-02
    Beschreibung: By recombinant DNA techniques, a disulfide bond was introduced at a specific site in T4 lysozyme, a disulfide-free enzyme. This derivative retained full enzymatic activity and was more stable toward thermal inactivation than the wild-type protein. The derivative, T4 lysozyme (Ile3----Cys), was prepared by substituting a Cys codon for an Ile codon at position 3 in the cloned lysozyme gene by means of oligonucleotide-dependent, site-directed mutagenesis. The new gene was expressed in Escherichia coli under control of the (trp-lac) hybrid tac promoter, and the protein was purified. Mild oxidation generated a disulfide bond between the new Cys3 and Cys97, one of the two unpaired cysteines of the native molecule. Oxidized T4 lysozyme (Ile3----Cys) exhibited specific activity identical to that of the wild-type enzyme when measured at 20 degrees C in a cell-clearing assay. The cross-linked protein was more stable than the wild type during incubation at elevated temperatures as determined by recovered enzymatic activity at 20 degrees C.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Perry, L J -- Wetzel, R -- New York, N.Y. -- Science. 1984 Nov 2;226(4674):555-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6387910" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Chemical Phenomena ; Chemistry ; DNA, Recombinant/metabolism ; Escherichia coli/enzymology ; *Genetic Engineering ; Kinetics ; Muramidase/*genetics/metabolism ; Protein Denaturation
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 27
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-06-08
    Beschreibung: The effect of a partial pressure of nitrogen of 50 atmospheres (5065 kilopascals ) on the hydrogen evolution reaction of nitrogenase has been investigated. Evolution of hydrogen was not blocked completely by 50 atmospheres of nitrogen in any of four experiments; rather, 27.3 +/- 2.4 percent of the total electron flux through nitrogenase was directed toward production of hydrogen. The ratio of hydrogen evolved to nitrogen fixed was close to 1:1, which implies that hydrogen evolution is obligatory in the fixation of molecular nitrogen by nitrogenase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Simpson, F B -- Burris, R H -- AI-00848/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1984 Jun 8;224(4653):1095-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6585956" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Chemical Phenomena ; Chemistry ; *Hydrogen ; *Nitrogen ; Nitrogen Fixation ; *Nitrogenase ; Partial Pressure
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 28
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-05-11
    Beschreibung: An endotoxin produced by Escherichia coli caused a decrease in prolactin concentrations in the plasma of sows when given at low dosages 2 days postpartum. Five to tenfold increases occurred in the plasma cortisol concentrations. Piglet growth, used as an indicator of milk secretion by the sows, was significantly depressed after the endotoxin administration. Some cases of lactation failure in the periparturient sow may thus be due to endotoxins suppressing prolactin concentrations. This appears to be the first report of a bacterial endotoxin having an effect on prolactin in any species.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, B B -- Wagner, W C -- New York, N.Y. -- Science. 1984 May 11;224(4649):605-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6369541" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Endotoxins/*pharmacology ; *Escherichia coli ; Female ; Lactation/drug effects ; Lactation Disorders/etiology ; Pregnancy ; Prolactin/*blood ; Swine/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 29
    Publikationsdatum: 1984-11-23
    Beschreibung: Metastatic mouse melanoma cells have a high affinity for the basement membrane and the ability to degrade it; these properties may allow tumor cells to invade the membrane and disseminate. In this study it was found that the metastatic potential of mouse melanoma cells varied when the cells were exposed in culture to fibronectin or laminin. After removal of fibronectin or exposure to laminin, the cells had an increased affinity for basement membrane collagen, were more invasive of basement membranes in vitro, and produced more lung colonies in vivo. These changes are correlated with and may be due to an increase in the laminin-binding capacity of the tumor cell surface.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Terranova, V P -- Williams, J E -- Liotta, L A -- Martin, G R -- New York, N.Y. -- Science. 1984 Nov 23;226(4677):982-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6505678" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amnion/physiology ; Animals ; Cell Division/drug effects ; Cell Line ; Female ; Fibronectins/*pharmacology ; Humans ; Immune Sera ; Kinetics ; Laminin/*pharmacology ; Melanoma/*pathology ; Mice ; Neoplasm Metastasis/*pathology ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 30
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-05-25
    Beschreibung: Polypeptide analogs of the known members of the corticotropin-releasing factor (CRF) family were synthesized and tested in vitro and in vivo for enhanced potency or competitive antagonism. Predictive methods and physicochemical measurements had suggested an internal secondary alpha-helical conformation spanning about 25 residues for at least three members of the CRF family. Maximization of alpha-helix-forming potential by amino acid substitutions from the native known sequences (rat/human and ovine CRF, sauvagine, and carp and sucker urotensin 1) led to the synthesis of an analog that was found to be more than twice as potent as either of the parent peptides in vitro. In contrast, certain amino-terminally shortened fragments, such as alpha-helical CRF or ovine CRF residues 8 to 41, 9 to 41, and 10 to 41, were found to be competitive inhibitors in vitro. Selected antagonists were examined and also found to be active in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rivier, J -- Rivier, C -- Vale, W -- AA03504/AA/NIAAA NIH HHS/ -- AM20917/AM/NIADDK NIH HHS/ -- AM26741/AM/NIADDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1984 May 25;224(4651):889-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6326264" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adrenocorticotropic Hormone/secretion ; Animals ; Binding, Competitive ; Chemical Phenomena ; Chemistry ; Corticotropin-Releasing Hormone/*antagonists & inhibitors ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 31
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-07-13
    Beschreibung: Genetic screening is a systematic search in the population for persons of certain genotypes. The usual purpose is to detect persons who themselves or whose offspring are at risk for genetic diseases or genetically determined susceptibilities to environmental agents. Is genetic screening a marvel about to free us from the scourge of genetic disease or a menace about to invade our privacy and determine who may reproduce? There are three different types of genetic screening. Newborn screening identifies serious genetic disease at birth, permitting prompt treatment to prevent mental and physical retardation. Fetal screening and prenatal diagnosis identify genetic disease in the fetus permitting selective termination of pregnancy and the opportunity to have children free of defects detectable in utero. Carrier screening identifies individuals heterozygous for a gene for a serious recessive disease who may be at risk for affected offspring. The challenge to society is to provide (by way of cost-effective programs) expert services, including genetic counseling and follow-up, to all who may benefit, to ensure confidentiality and freedom of choice, and to avoid misunderstanding and stigmatization. It is recommended that the objective of screening programs should be to maximize the options available to families at risk rather than to reduce the incidence of genetic diseases. Whenever possible, the providers of these services should be the providers of primary health care. Urgently needed are a greater awareness of avoidable genetic diseases on the part of primary care providers and efforts to familiarize the public with the basic concepts of human genetics through the public school system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rowley, P T -- New York, N.Y. -- Science. 1984 Jul 13;225(4658):138-44.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6729472" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amniocentesis ; Disclosure ; Ethics, Medical ; Female ; *Genetic Diseases, Inborn ; *Genetic Testing ; Heterozygote ; Heterozygote Detection ; Humans ; Infant, Newborn ; Information Dissemination ; Insemination, Artificial ; Mandatory Programs ; Metabolism, Inborn Errors/genetics ; Occupational Medicine ; Personal Autonomy ; Phenylketonurias/genetics ; Pregnancy ; Prenatal Diagnosis ; *Risk Assessment ; Spermatozoa ; Tay-Sachs Disease/genetics ; Voluntary Programs ; fetal, and carrier, Rowley describes the development and current status of each, ; as well as the ethical, legal, psychological, and social issues involved. He ; briefly considers the special cases of genetic screening of industrial employees ; and of semen donors. He recommends that the goal of screening programs should be ; to maximize the options available to families at risk rather than to reduce the ; incidence of genetic disease. To accomplish this goal, he urges public and ; professional education on human genetics, research on the best delivery ; mechanisms for current technologies, and the clarification and coordination of ; the roles of health care providers, voluntary organizations, and government ; agencies.
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 32
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1984-03-09
    Beschreibung: Newborn cats and mice became infected with Alaria marcianae if they nursed from females that had been experimentally infected with the parasite. All lactating females showed mesocercarial stages in their mammary glands. This may be the first trematode found to undergo transmission through the mammary glands under experimental conditions. Similarities in the behavior of mesocercariae in humans and in the mouse suggest that an infected human female might infect her infant if she elected to nurse it.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shoop, W L -- Corkum, K C -- New York, N.Y. -- Science. 1984 Mar 9;223(4640):1082-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6695195" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Newborn ; Cats ; Feces/parasitology ; Female ; *Lactation ; Mammary Glands, Animal/*parasitology ; Maternal-Fetal Exchange ; Mice ; Pregnancy ; Trematode Infections/congenital/parasitology/*transmission
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 33
    Publikationsdatum: 1984-06-01
    Beschreibung: The effects of marginal malnourishment , infections, and environmental chemicals on growth and reproductive success in Swiss-Webster white mice and wild deer mice were studied with fractional factorial designs. Interaction effects were discovered. For example, malnourished mice were more sensitive to virus exposure and environmental chemicals (a plant growth regulator or polychlorinated biphenyls). Since several commercial plant growth regulators also appear to suppress the immune system, these results cast doubt on the adequacy of current toxicity testing procedures in which factors are studied individually and not in combination.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Porter, W P -- Hinsdill, R -- Fairbrother, A -- Olson, L J -- Jaeger, J -- Yuill, T -- Bisgaard, S -- Hunter, W G -- Nolan, K -- 5-T32-ES07015/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1984 Jun 1;224(4652):1014-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6426058" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Wild ; Chlormequat/adverse effects ; Cyclophosphamide/adverse effects ; Encephalomyelitis, Venezuelan Equine/physiopathology ; Environmental Exposure ; Female ; Food Supply ; Growth/*drug effects ; Humans ; Immunity/*drug effects ; Mice ; Nutrition Disorders/physiopathology ; Peromyscus ; Polychlorinated Biphenyls/adverse effects ; Pregnancy ; Reproduction/*drug effects ; Water Supply
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 34
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-11-04
    Beschreibung: Blink-startle responses to vibroacoustic stimulation were monitored ultrasonically in human fetuses of known gestational age. Responses were first elicited between 24 and 25 weeks of gestational age and were present consistently after 28 weeks. Defining the developmental sequence for audition provides a foundation for diagnosing deafness and recognizing aberrant responses antenatally.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Birnholz, J C -- Benacerraf, B R -- New York, N.Y. -- Science. 1983 Nov 4;222(4623):516-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6623091" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acoustic Stimulation ; Ear/*embryology ; Female ; Fetus/*physiology ; Gestational Age ; *Hearing ; Humans ; Pregnancy ; Ultrasonography ; Vibration
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 35
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-03-25
    Beschreibung: The activity of 7,12-dimethylbenz[a]anthracene hydroxylase in the rat ovary is several times higher in the proestrous phase of the estrous cycle than in the estrous and metestrous plus diestrous phases. Administration of gonadotropin leads to a similar increase in the capacity of the ovary to metabolize xenobiotics. This variation in the activity of 7,12-dimethylbenz[a]anthracene hydroxylase during the estrous cycle may be related to the marked changes in the incidence of ovarian cancer during menopause and in women taking contraceptive pills.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bengtsson, M -- Rydstrom, J -- New York, N.Y. -- Science. 1983 Mar 25;219(4591):1437-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6681915" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Aryl Hydrocarbon Hydroxylases/*metabolism ; Cytochrome P-450 Enzyme System/metabolism ; Epoxide Hydrolases/metabolism ; *Estrus ; Female ; Glutathione Transferase/metabolism ; Gonadotropins, Equine/*pharmacology ; Metestrus ; Ovary/*physiology ; Pregnancy ; Proestrus ; Quinone Reductases/metabolism ; Rats ; Rats, Inbred Strains
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 36
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-09-23
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1983 Sep 23;221(4617):1244-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6684327" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Dose-Response Relationship, Drug ; Ethanol/*adverse effects ; Female ; Pregnancy ; Pregnancy, Animal/*drug effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 37
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-08-26
    Beschreibung: The rate of increase of population in less developed countries accelerated rapidly from 1850 to 1960 because of a rapid decline in mortality while fertility remained high. In the 1960's, the birth rate as a whole began to decline more rapidly than the death rate--very rapidly in some populations, most notably that of China, more gradually in others, and not at all in some of the poorest populations. The momentum of growth implies continued increase in populations for several decades even in countries where fertility has fallen the most, and very large additional increases where there has been no decline in the rate of childbearing.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coale, A J -- New York, N.Y. -- Science. 1983 Aug 26;221(4613):828-32.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879179" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Age Factors ; Birth Rate ; *Developing Countries ; Female ; *Fertility ; Humans ; Marriage ; Parity ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 38
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-10-14
    Beschreibung: In vitro fertilization, in its first 5 years of use, has met minimum standards for efficacy and safety, as judged by published clinical reports. It is becoming more widely available as an approach for overcoming sterility in married couples and appears also to be gaining social acceptance in that context. Several technical options presented by the procedure, particularly storage of frozen embryos and embryo transfers involving third-party contributions, are less fully evaluated clinically and raise social, ethical, and legal questions that go beyond the original medical model for therapeutic intervention. The clinical success of in vitro fertilization and the options it affords call for careful policy consideration. Estimates of costs and of potential demand for and supply of services are provided and the current status of relevant policy in the United States and abroad is discussed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grobstein, C -- Flower, M -- Mendeloff, J -- New York, N.Y. -- Science. 1983 Oct 14;222(4620):127-33.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6623063" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Advisory Committees ; Costs and Cost Analysis ; Embryo Transfer ; Ethical Review ; Ethics ; Fallopian Tube Diseases/therapy ; Federal Government ; Female ; Fertilization in Vitro/*methods ; Humans ; Infertility, Female/therapy ; Infertility, Male/therapy ; Legislation, Medical ; Male ; Obstetrics/economics/standards ; Oocyte Donation ; Pregnancy ; Resource Allocation ; *Risk Assessment ; during its first five years. Efficacy, safety, costs, demand and supply, and ; feasible extensions of the basic procedure are discussed. The authors contend ; that, while Australia and Great Britain have made progress toward formulating ; public policy on IVF, efforts in the United States have not gone beyond a 1979 ; report and recommendations issued by the Department of Health, Education, and ; Welfare's Ethics Advisory Board. Given the ready clinical and public acceptance ; of IVF, there is need for an oversight mechanism at the federal level, perhaps ; via a forum concerned also with the overlapping area of human genetic ; intervention.
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 39
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-04-22
    Beschreibung: Female mice that had been situated in utero between two female fetuses displayed higher levels of active avoidance responding in adult life than females that had been located between two male fetuses and males for whom uterine position was without effect. Uterine position, therefore, influences acquired as well as species-typical behaviors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hauser, H -- Gandelman, R -- New York, N.Y. -- Science. 1983 Apr 22;220(4595):437-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836288" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Androgens/physiology ; Animals ; Avoidance Learning/*physiology ; Female ; Fetus/*physiology ; Male ; Mice ; Pregnancy ; Rats ; Sex Factors ; Uterus
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 40
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-05-06
    Beschreibung: Crystalline cholesterol undergoes a phase transition a few degrees below human body temperature. The high-temperature form has an unusually complex structure with 16 independent molecules. In the transition two molecules change side chain conformation, four reorient about their long axes, and ten remain unchanged. The transition mechanism implies relatively nonspecific intermolecular interactions, qualitatively consistent with the behavior of cholesterol in biomembranes. The transition preserves a remarkably closely obeyed pseudosymmetry present in the structure.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hsu, L Y -- Nordman, C E -- GM15259/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 May 6;220(4597):604-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836303" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Body Temperature ; Chemical Phenomena ; Chemistry ; *Cholesterol ; Crystallization ; Humans ; Magnetic Resonance Spectroscopy ; Molecular Conformation
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 41
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-05-06
    Beschreibung: Arachidonic acid plays a central role in a biological control system where such oxygenated derivatives as prostaglandins, thromboxanes, and leukotrienes are mediators. The leukotrienes are formed by transformation of arachidonic acid into an unstable epoxide intermediate, leukotriene A4, which can be converted enzymatically by hydration to leukotriene B4, and by addition of glutathione to leukotriene C4. This last compound is metabolized to leukotrienes D4 and E4 by successive elimination of a gamma-glutamyl residue and glycine. Slow-reacting substance of anaphylaxis consists of leukotrienes C4, D4, and E4. The cysteinyl-containing leukotrienes are potent bronchoconstrictors, increase vascular permeability in postcapillary venules, and stimulate mucus secretion. Leukotriene B4 causes adhesion and chemotactic movement of leukocytes and stimulates aggregation, enzyme release, and generation of superoxide in neutrophils. Leukotrienes C4, D4, and E4, which are released from the lung tissue of asthmatic subjects exposed to specific allergens, seem to play a pathophysiological role in immediate hypersensitivity reactions. These leukotrienes, as well as leukotriene B4, have pro-inflammatory effects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Samuelsson, B -- New York, N.Y. -- Science. 1983 May 6;220(4597):568-75.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6301011" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Arachidonic Acids/metabolism/pharmacology/physiology ; Bronchi/drug effects ; Cats ; Chemical Phenomena ; Chemistry ; Cricetinae ; Guinea Pigs ; Haplorhini ; Humans ; Hypersensitivity, Immediate/*physiopathology ; Inflammation/*physiopathology ; Leukocytes/drug effects/metabolism ; Leukotriene B4/pharmacology/*physiology ; Mice ; Microcirculation/drug effects ; Rabbits ; Rats ; SRS-A/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 42
    Publikationsdatum: 1983-12-16
    Beschreibung: Aplysiatoxin and debromoaplysiatoxin, which are isolated from the seaweed, Lyngbya gracilis, differ in their chemical structure only by the presence or absence of a bromine residue in the hydrophilic region. The function and the structure-activity relation of the hydrophilic region are not known. Aplysiatoxin increased malignant transformation, stimulated DNA synthesis, and inhibited the binding of phorbol-12,13-dibutyrate and epidermal growth factor to cell receptors. Debromoaplysiatoxin inhibited the binding of these two substances as strongly as aplysiatoxin but did not increase malignant transformation or stimulate DNA synthesis. These results indicate that a slight change in the chemical structure of the hydrophilic region of aplysiatoxin affects its abilities to increase cell transformation and stimulate DNA synthesis and that the abilities of the tumor promoters to inhibit the binding of phorbol-12,13-dibutyrate and epidermal growth factor are dissociable from their abilities to increase cell transformation and stimulate DNA synthesis under some circumstances.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shimomura, K -- Mullinix, M G -- Kakunaga, T -- Fujiki, H -- Sugimura, T -- New York, N.Y. -- Science. 1983 Dec 16;222(4629):1242-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6316505" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Caenorhabditis elegans Proteins ; Carcinogens/*pharmacology ; Carrier Proteins ; Cell Line ; Cell Transformation, Neoplastic/*drug effects ; Chemical Phenomena ; Chemistry ; DNA/biosynthesis ; Epidermal Growth Factor/metabolism ; Lactones/analysis/*pharmacology ; *Lyngbya Toxins ; Mice ; Phorbol 12,13-Dibutyrate ; Phorbol Esters/metabolism ; *Protein Kinase C ; Receptor, Epidermal Growth Factor ; Receptors, Cell Surface/metabolism ; *Receptors, Drug ; Structure-Activity Relationship
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 43
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-09-09
    Beschreibung: The structures of three proteins that regulate gene expression have been determined recently and suggest how these proteins may bind to their specific recognition sites on the DNA. One protein (Cro) is a repressor of gene expression, the second (CAP) usually stimulates gene expression, and the third (lambda repressor) can act as either a repressor or an activator. The three proteins contain a substructure consisting of two consecutive alpha helices that is virtually identical in each case. Structural and amino acid sequence comparisons suggest that this bihelical fold occurs in a number of proteins that regulate gene expression, and is an intrinsic part of the DNA-protein recognition event. The modes of repression and activation by Cro and lambda repressor are understood reasonably well, but the mode of action of CAP is still unclear.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Takeda, Y -- Ohlendorf, D H -- Anderson, W F -- Matthews, B W -- GM20066/GM/NIGMS NIH HHS/ -- GM28138/GM/NIGMS NIH HHS/ -- GM30894/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 Sep 9;221(4615):1020-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6308768" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Chemical Phenomena ; Chemistry ; *DNA Helicases ; DNA-Binding Proteins ; Escherichia coli/genetics ; Gene Expression Regulation ; Models, Chemical ; Protein Conformation
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 44
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-03-11
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clarkson, A B Jr -- Mellow, G H -- AI 19015-02/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1983 Mar 11;219(4589):1238-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6402816" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Chagas Disease/*immunology ; Female ; Humans ; Lactation ; Pregnancy ; Rheumatoid Factor/*immunology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 45
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-08-12
    Beschreibung: Placental and fetal tissues from 46 human pregnancies were cultured and cytogenetically analyzed in an attempt to document the existence of chromosomal mosaicism confined strictly to tissues of extraembryonic origin. In two gestations in which chromosomal mosaicism was found, it was expressed exclusively in placental chorionic cells and was not detected in cells derived from the embryo proper. This demonstration of confined chorionic mosaicism may have implications for the understanding of the fetoplacental unit and for prenatal diagnosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kalousek, D K -- Dill, F J -- New York, N.Y. -- Science. 1983 Aug 12;221(4611):665-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6867735" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amnion/physiology ; Chorion/physiology ; Chromosomes, Human ; Female ; Fetal Blood/physiology ; Fetal Growth Retardation/genetics ; Fetus/physiology ; Humans ; Male ; *Mosaicism ; Placenta/*physiology ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 46
    facet.materialart.
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-01-07
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1983 Jan 7;219(4580):42-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6849114" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acquired Immunodeficiency Syndrome/genetics/*transmission ; Blood Transfusion/adverse effects ; Child ; Child, Preschool ; Female ; Hemophilia A/*complications ; Humans ; Infant ; Infant, Newborn ; Male ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 47
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-01-07
    Beschreibung: The immediate induction of the full complement of maternal behavior in nonpregnant ewes primed with estrogen and progesterone has been obtained after 5 minutes of vaginal-cervical stimulation. A similar period of such stimulation given to recently parturient ewes, after the development of selective bonding to their own lambs, reversed their rejection behavior of alien lambs and produced a state of plasticity in maternal behavior, such that ewes receiving vaginal stimulation would accept and adopt alien lambs. These findings implicate vaginal-cervical stimulation as playing a role in the onset of maternal behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keverne, E B -- Levy, F -- Poindron, P -- Lindsay, D R -- New York, N.Y. -- Science. 1983 Jan 7;219(4580):81-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6849123" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Estradiol/pharmacology ; Female ; *Maternal Behavior ; Pregnancy ; Progesterone/pharmacology ; Sheep/*physiology ; Time Factors ; Vagina/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 48
    Publikationsdatum: 1983-12-09
    Beschreibung: Antisera to human syncytiotrophoblast microvillous cell surface membranes from different placentas are cytotoxic for lymphocytes from some people but not others, demonstrating the presence of allotypic trophoblast-lymphocyte cross-reactive (TLX) antigens. Exploratory principal components factor analysis, performed on limited data consisting of 300 cytotoxic reactions produced by ten separate trophoblast antisera on a panel of lymphocytes from 30 random donors, suggested the presence of three distinct TLX antigen groupings. It is proposed that such TLX alloantigens are central in establishing maternal recognition and protection of the blastocyst, and that lack of recognition results in implantation failure and spontaneous abortion. These findings are compatible with contemporary results of immunotherapy to prevent recurrent spontaneous abortions, and their implications extend to other conditions of allogeneic coexistence, such as organ transplantation and the tumor-host relationship.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McIntyre, J A -- Faulk, W P -- Verhulst, S J -- Colliver, J A -- New York, N.Y. -- Science. 1983 Dec 9;222(4628):1135-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6648525" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Antigens, Surface/*immunology ; Cross Reactions ; Cytotoxicity, Immunologic ; Female ; Humans ; Lymphocytes/*immunology ; Maternal-Fetal Exchange ; Pregnancy ; Trophoblasts/*immunology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 49
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-07-29
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G -- New York, N.Y. -- Science. 1983 Jul 29;221(4609):441.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6408734" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Female ; Fetus/*surgery ; Haplorhini ; Humans ; Neural Tube Defects/*surgery ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 50
    facet.materialart.
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-06-10
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Krenitsky, T A -- Beauchamp, L -- New York, N.Y. -- Science. 1983 Jun 10;220(4602):1106.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857236" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acyclovir/metabolism ; *Antiviral Agents/metabolism ; Chemical Phenomena ; Chemistry ; Humans ; Vidarabine/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 51
    Publikationsdatum: 1983-05-06
    Beschreibung: Resonance Raman spectra of photolyzed carbonmonoxyhemoglobin obtained with 10-nanosecond pulses are compared with the spectra of photolyzed carbonmonoxyhemoglobin stabilized at 80 K. In comparing the deoxy with the photodissociated species, the changes in the Raman spectra are the same for these two experimental regimes. These results show that at ambient and cryogenic temperatures the heme pocket in liganded hemoglobin is significantly different from that of deoxyhemoglobin. It is concluded that measurements of the properties of intermediate species from photodissociated hemoglobin stabilized at low temperatures can be used to probe the short-lived metastable forms of hemoglobin present after photodissociation under biologically relevant solution conditions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ondrias, M R -- Friedman, J M -- Rousseau, D L -- New York, N.Y. -- Science. 1983 May 6;220(4597):615-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836305" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Carboxyhemoglobin ; Chemical Phenomena ; Chemistry ; Freezing ; *Hemoglobins ; Humans ; Ligands ; Spectrum Analysis, Raman ; Temperature
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 52
    facet.materialart.
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-07-29
    Beschreibung: Pregnant rats received 2-[14C]deoxy-D-glucose (2DG) intravenously on the last day of gestation, and their fetuses were delivered 1 hour later by cesarean section. Fetal brains showed high 2DG uptake spread throughout the accessory olfactory bulb and little or no differential uptake in the main olfactory bulb. These findings demonstrate that functional activity occurs in the accessory olfactory bulb in utero and suggest that the accessory olfactory system may be the pathway by which fetal rats detect the odor quality of their intrauterine milieu.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pedersen, P E -- Stewart, W B -- Greer, C A -- Shepherd, G M -- F32-NS06978/NS/NINDS NIH HHS/ -- NS 16993/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 29;221(4609):478-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6867725" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Autoradiography ; Brain/radionuclide imaging ; Deoxyglucose/metabolism ; Female ; Fetus/*physiology ; Olfactory Bulb/physiology/radionuclide imaging ; Pregnancy ; Rats ; Rats, Inbred Strains ; Smell/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 53
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-03-25
    Beschreibung: Quantitative electron microscopic analysis reveals 2.85 million retinal axons in fetal rhesus monkeys--a number that is more than twice the 1.2 million present in the adult. More than 1 million supernumerary optic axons are eliminated before birth, simultaneously with the segregation of inputs from the two eyes into separate layers of the lateral geniculate nucleus. Selective elimination of optic axons may not only play a role in the segregation of binocular visual connections but, secondarily, may establish the ratio of crossed and uncrossed retinogeniculate projections.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rakic, P -- Riley, K P -- EY02593/EY/NEI NIH HHS/ -- RR00168/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1983 Mar 25;219(4591):1441-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828871" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Axons/*physiology/ultrastructure ; Female ; Fetus/physiology ; Macaca mulatta ; Optic Nerve/*embryology/ultrastructure ; Pregnancy ; Retina/*embryology/ultrastructure
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 54
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-05-27
    Beschreibung: Deoxyglucose labeled with carbon-14 was used in studying the utilization of glucose in the suprachiasmatic nuclei of fetal rats. The results showed that an entrainable circadian clock is present in the suprachiasmatic nuclei during fetal development and that the maternal circadian system coordinates the phase of the fetal clock to environmental lighting conditions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reppert, S M -- Schwartz, W J -- 1 K07 NS 00672/NS/NINDS NIH HHS/ -- HD 14427/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1983 May 27;220(4600):969-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6844923" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Circadian Rhythm ; Darkness ; Female ; Fetus/*physiology ; Gestational Age ; Glucose/metabolism ; Lighting ; *Maternal-Fetal Exchange ; Pregnancy ; Rats ; Suprachiasmatic Nucleus/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 55
    Publikationsdatum: 1983-04-15
    Beschreibung: Alkylating agents that display strong selectivity for opiate receptor types delta or mu were prepared by appropriate modification of the structures of the strong analgesics fentanyl, etonitazene, and endoethenotetrahydrooripavine. The availability of these substances should facilitate studies of the structural basis of receptor specificity and of the physiologic roles of these receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rice, K C -- Jacobson, A E -- Burke, T R Jr -- Bajwa, B S -- Streaty, R A -- Klee, W A -- New York, N.Y. -- Science. 1983 Apr 15;220(4594):314-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6132444" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alkylation ; Animals ; Benzimidazoles/analogs & derivatives/metabolism ; Brain/physiology ; Cells, Cultured ; Chemical Phenomena ; Chemistry ; Enkephalin, Methionine/analogs & derivatives/metabolism ; Fentanyl/analogs & derivatives/metabolism ; *Isothiocyanates ; Ligands ; Rats ; Receptors, Opioid/*metabolism/physiology ; Thebaine/analogs & derivatives/pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 56
    Publikationsdatum: 1983-07-22
    Beschreibung: Isolated umbilical arteries and veins, obtained from normal women at the end of pregnancy, were incubated in krebs-Ringer bicarbonate solution and exposed to magnesium at concentrations ranging from 0 to 9.6 millimoles per liter. The basal tension of the vessels increased when magnesium was withdrawn and decreased when the concentration of magnesium was raised. Absence of magnesium in the medium significantly potentiated the contractile response of the vessels to bradykinin, angiotensin II, serotonin, and prostaglandin F2 alpha. It appears that magnesium deficiency may be responsible for spasms of umbilical and placental vasculature. Our findings may provide a rationale for why magnesium sulfate is an effective therapy in preeclamptic syndromes in pregnant women.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Altura, B M -- Altura, B T -- Carella, A -- HL 18015/HL/NHLBI NIH HHS/ -- HL 29600/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 22;221(4608):376-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6867714" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Female ; Fetal Growth Retardation/*etiology ; Humans ; Hypertension/*etiology ; Magnesium Deficiency/*complications ; Pre-Eclampsia/*etiology ; Pregnancy ; Pregnancy Complications, Cardiovascular/*etiology ; Spasm/etiology ; Umbilical Arteries/physiopathology ; Umbilical Cord/*blood supply/physiopathology ; Umbilical Veins/physiopathology ; Vasoconstrictor Agents/pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 57
    Publikationsdatum: 1983-03-04
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Enns, M P -- Wilson, M W -- Grinker, J A -- Faust, I M -- Jones, A P -- Friedman, M I -- AM20508/AM/NIADDK NIH HHS/ -- AM27980/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1983 Mar 4;219(4588):1093-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6681680" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adipose Tissue/cytology ; Animals ; Body Weight ; Dietary Fats ; Energy Intake ; Female ; Male ; *Nutritional Physiological Phenomena ; Pregnancy ; *Pregnancy, Animal ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 58
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-09-09
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G -- New York, N.Y. -- Science. 1983 Sep 9;221(4615):1031-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879201" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Biopsy ; Chorionic Villi/*ultrastructure ; Female ; Humans ; Placenta/*ultrastructure ; Pregnancy ; *Pregnancy Trimester, First ; *Prenatal Diagnosis
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 59
    Publikationsdatum: 1983-04-29
    Beschreibung: Urine of the human fetus stimulated prostaglandin biosynthesis in vitro by increasing the conversion of arachidonic acid into prostaglandins. The stimulatory activity in urine from fetuses delivered at term after labor of spontaneous onset was greater than that in urine from fetuses delivered by cesarean section at term before the onset of labor. Such stimulation of prostaglandin biosynthesis by the fetal membranes, by way of a substance released into the urine and thence into amniotic fluid, could serve as a signal for the initiation of parturition.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Strickland, D M -- Saeed, S A -- Casey, M L -- Mitchell, M D -- 5-P50-HD11149/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1983 Apr 29;220(4596):521-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6573023" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Dinoprostone ; Extraembryonic Membranes/physiology ; Female ; Fetus/*physiology ; Humans ; *Labor Onset ; *Labor, Obstetric ; Male ; Pregnancy ; Prostaglandins/*biosynthesis ; Prostaglandins E/biosynthesis ; *Urine
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 60
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-07-29
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sun, M -- New York, N.Y. -- Science. 1983 Jul 29;221(4609):440-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6867721" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Federal Government ; Female ; *Government Regulation ; Humans ; Neural Tube Defects/*diagnosis ; Pregnancy ; Pregnant Women ; *Prenatal Diagnosis/instrumentation ; Risk Assessment ; United States ; United States Food and Drug Administration ; Administration on 17 June to approve the wider use of diagnostic kits for the ; detection of fetal neural tube defects. The American College of Obstetricians and ; Gynecologists and the American Academy of Pediatrics are among the critics who ; favor tighter restrictions on use of the kits, which measure levels of ; alpha-fetoprotein in serum samples taken from expectant mothers, on the grounds ; that false positive results are common, necessitating careful quality control ; monitoring of physicians, manufacturers, and laboratories performing the test.
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 61
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-09-30
    Beschreibung: Treatment with combinations of synthetic prostaglandins, one with an ovarian site of action and one with a uterine site of action, terminated pregnancy in all rhesus monkeys given the injection on day 28 of fertile menstrual cycles. Single prostaglandins, even at higher doses, interrupted pregnancy in only one-third of the monkeys. The most effective treatment, 5-oxa-17-phenyl-18,19,20-trinor prostaglandin F1 alpha methyl ester plus 9-deoxo-16,16-dimethyl-9-methylene prostaglandin E2, promptly intercepted early pregnancy after a single administration and without side effects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilks, J W -- New York, N.Y. -- Science. 1983 Sep 30;221(4618):1407-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6612350" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Abortifacient Agents ; *Abortifacient Agents, Nonsteroidal ; *Abortion, Induced ; Animals ; Chorionic Gonadotropin/pharmacology ; Corpus Luteum/drug effects ; Drug Therapy, Combination ; Female ; Pregnancy ; Progesterone/blood ; Prostaglandins E, Synthetic/*administration & dosage/pharmacology ; Prostaglandins F, Synthetic/*administration & dosage/pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 62
    Publikationsdatum: 1983-07-08
    Beschreibung: Inbred BALB/c females were mated and subsequently exposed in a divided cage to "stimulus" males or females whose H-2 type was similar or dissimilar to the stud male's. The incidence of pregnancy blocking was considerably higher when stud and stimulus males differed in H-2 type than when they did not. Similar results were obtained with urine samples of H-2 identical and nonidentical males. Females exposed after mating to other females whose H-2 type differed from the stud male, under the same experimental conditions, also showed an appreciable incidence of pregnancy block. It is therefore concluded that chemosensory recognition of H-2 types affects the reproductive hormonal status of the pregnant female.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yamazaki, K -- Beauchamp, G K -- Wysocki, C J -- Bard, J -- Thomas, L -- Boyse, E A -- CA-29979/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 8;221(4606):186-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857281" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Embryonic Development ; Estrus ; Female ; H-2 Antigens/*immunology ; Homozygote ; Male ; Mice ; Mice, Inbred BALB C ; Pregnancy ; *Pregnancy, Animal
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 63
    Publikationsdatum: 1982-11-12
    Beschreibung: Female athymic nude mice and their phenotypically normal littermates were exposed transplacentally to ethylnitrosourea. Skin tumors (papillomas and sebaceous adenomas) developed on the nude mice with an almost tenfold greater incidence than on their haired littermates. Skin tumors were also induced on nude mice but not haired controls by direct intraperitoneal treatment with ethylnitrosourea. These results indicate that nude mice have higher than normal susceptibility to carcinogenesis under some circumstances.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, L M -- Last-Barney, K -- Budinger, J M -- CA 08748/CA/NCI NIH HHS/ -- CA 22498/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1982 Nov 12;218(4573):682-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7134965" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adenoma/chemically induced ; Animals ; *Ethylnitrosourea ; Female ; *Maternal-Fetal Exchange ; Mice ; Mice, Nude/*physiology ; Neoplasms, Experimental/chemically induced ; *Nitrosourea Compounds ; Pregnancy ; Sebaceous Gland Neoplasms/chemically induced ; Skin Neoplasms/*chemically induced
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 64
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-10-29
    Beschreibung: Exposure of rats to cimetidine during intrauterine life and the immediate neonatal period results in hypoandrogenization in adult life with decreased weights of androgen-dependent tissues and decreased concentrations of testosterone. Moreover, sexual behavior patterns in adult life are disturbed as shown by a lack of sexual motivation and decreased performance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anand, S -- Van Thiel, D H -- New York, N.Y. -- Science. 1982 Oct 29;218(4571):493-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123252" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Abnormalities, Drug-Induced/*etiology ; Animals ; Animals, Suckling ; Cimetidine/metabolism/*toxicity ; Female ; Guanidines/*toxicity ; Male ; Pregnancy ; Pregnancy, Animal/drug effects ; Rats ; Sex Differentiation/*drug effects ; Sexual Behavior, Animal/drug effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 65
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-10-08
    Beschreibung: Rats whose pregnancies were surgically terminated on day 17 of gestation were injected with morphine, morphine plus naloxone hydrochloride, or saline, and then tested for maternal responsiveness toward foster young. Morphine treatment alone significantly disrupted the rate of onset and quality of maternal responsiveness. Concurrent administration of naloxone to morphine-injected rats reinstated the rapid onset of behavioral responsiveness toward foster young, such that the responsiveness of the rats treated with both morphine and naloxone was indistinguishable from that shown by saline-injected controls. The disruptive effects of morphine did not appear to result from a general reduction in activity levels as measured in an open-field apparatus. These findings suggest that the normal onset and maintenance of maternal behavior in the rat may be regulated by endogenous opiates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bridges, R S -- Grimm, C T -- New York, N.Y. -- Science. 1982 Oct 8;218(4568):166-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123227" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Behavior, Animal/*drug effects ; Drug Antagonism ; Female ; Morphine/*pharmacology ; Naloxone/*pharmacology ; Pregnancy ; Rats ; Rats, Inbred Strains
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 66
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-10-01
    Beschreibung: Mouse embryos were grown successfully in vitro from the blastocyst stage to the limb bud stage. Mouse blastocysts grown in vitro for 10 days showed blood circulation in the yilk sac, forelimb buds, and the primordia of liver, pancreas, and lungs. These characteristics are indicative of a developmental stage equivalent to one-half of the total gestation period in utero. Improvements in culture conditions from days 7 to 9 have made it feasible to culture mouse blastocysts beyond the early somite stage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, L T -- Hsu, Y C -- AM 19535/AM/NIADDK NIH HHS/ -- AM 28550/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1982 Oct 1;218(4567):66-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123220" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Blastocyst/*physiology ; Cell Differentiation ; Culture Media ; Culture Techniques ; Embryo, Mammalian/*physiology ; Female ; Fetal Blood ; Humans ; Mice ; Pregnancy ; Yolk Sac/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 67
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-09-10
    Beschreibung: Alkyl-Substituted gamma-butyrolactones were synthesized and tested for their convulsant and anticonvulsant actions in mice and guinea pigs. The alpha-substituted compounds, alpha, alpha-dimethyl-, and alpha-ethyl-alpha-methyl-gamma-butyrolactone were anticonvulsant compounds with a spectrum of activity similar to that of ethosuximide. In contrast, beta-substituted compounds were convulsant agents similar to picrotoxinin. The alpha-substituted-gama-butyrolactones represent a new class of anticonvulsant drug with experimental and clinical potential.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Klunk, W E -- McKeon, A -- Covey, D F -- Ferrendelli, J A -- GM-07200/GM/NIGMS NIH HHS/ -- GM-24483/GM/NIGMS NIH HHS/ -- NS-14834/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1982 Sep 10;217(4564):1040-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6810462" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *4-Butyrolactone/analogs & derivatives/*therapeutic use/toxicity ; Animals ; *Anticonvulsants ; Chemical Phenomena ; Chemistry ; Convulsants ; Drug Evaluation, Preclinical ; Electroencephalography ; Epilepsy, Absence/drug therapy ; Ethosuximide/pharmacology ; *Furans/*therapeutic use ; Guinea Pigs ; Mice ; Structure-Activity Relationship ; Trimethadione/pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 68
    Publikationsdatum: 1982-01-01
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Klein, N W -- Plenefisch, J D -- Carey, S W -- Fredrickson, W T -- Sackett, G P -- Burbacher, T M -- Parker, R M -- HD02774/HD/NICHD NIH HHS/ -- HD08633/HD/NICHD NIH HHS/ -- RR00166/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1982 Jan 1;215(4528):66-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7053560" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Abortion, Veterinary/*blood ; Animals ; Congenital Abnormalities/*etiology ; Ectogenesis ; Female ; Macaca nemestrina/blood ; Mice ; Pregnancy ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 69
    Publikationsdatum: 1982-10-08
    Beschreibung: A synthetic antagonist of luteinizing hormone-releasing hormone blocked ovulation in rats in a dose-dependent manner when given by gavage on the afternoon of proestrus. Ovulation was delayed for at least 1 day in all animals given 2 milligrams of antogonist and in some of the animals treated with 1 or 0.5 milligram. Oral administration of 2 milligrams also blocked the preovulatory surge of luteinizing hormone. This demonstration that antagonists of luteinizing hormone-releasing hormone can have oral antiovulatory activity clearly enhances their therapeutic potential.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nekola, M B -- Horvath, A -- Ge, L J -- Coy, D H -- Schally, A V -- HD-0-2831/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1982 Oct 8;218(4568):160-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6750790" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Administration, Oral ; Animals ; Female ; Gonadotropin-Releasing Hormone/*analogs & derivatives/pharmacology ; Luteinizing Hormone/secretion ; Ovulation/*drug effects ; Pregnancy ; Proestrus/drug effects ; Rats ; Rats, Inbred Strains
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 70
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-04-09
    Beschreibung: A riboflavin carrier protein isolated from chickens cross-reacts with a gestation-specific rodent carrier for riboflavin. Active immunization of female rats of proved fertility with the purified chicken carrier protein completely yet reversibly suppressed early pregnancy without impairing implantation per se. Concurrently there were no discernible adverse effects on maternal health in terms of weight gain, vitamin status, and fertility.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Murty, C V -- Adiga, P R -- New York, N.Y. -- Science. 1982 Apr 9;216(4542):191-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7063879" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antibodies ; Carrier Proteins/*immunology ; Female ; Fetal Resorption/immunology ; Flavins/blood ; Glutathione Reductase/blood ; Immunization ; *Membrane Transport Proteins ; Pregnancy ; *Pregnancy, Animal ; Progesterone/blood ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 71
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-11-12
    Beschreibung: When ethanol was administered intravenously to pregnant monkeys, a transient but marked collapse of umbilical vasculature was observed uniformly within about 15 minutes. The ethanol-induced impairment of umbilical circulation produced severe hypoxia and acidosis in the fetus; recovery occurred during the succeeding hour. This striking interruption of feto-placental circulation may explain one of the mechanisms of mental retardation, a frequent manifestation in children afflicted with fetal alcohol syndrome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mukherjee, A B -- Hodgen, G D -- New York, N.Y. -- Science. 1982 Nov 12;218(4573):700-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6890235" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetaldehyde/blood ; Animals ; Disease Models, Animal ; Ethanol/blood/*pharmacology ; Female ; Fetal Alcohol Spectrum Disorders/*etiology ; Fetal Distress/*chemically induced ; Macaca fascicularis ; Macaca mulatta ; Pregnancy ; Pregnancy, Animal/*drug effects ; Umbilical Cord/*drug effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 72
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-03-05
    Beschreibung: Norethisterone (17 alpha-ethynyl-19-nortestosterone) is an effective irreversible inhibitor of estrogen synthetase (aromatase), the enzyme responsible for the conversion of androgens to estrogens, even at a 2 X 10(-6) molar concentration. This irreversible inactivation, which is directed toward the active site of aromatase and requires the cofactor-reduced nicotinamide adenine dinucleotide phosphate, is both time- and concentration-dependent. Ethisterone (17 alpha-ethynyltestosterone), in contrast, is not a suicide inhibitor of aromatase even at concentrations of 10(-4) molar.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Osawa, Y -- Yarborough, C -- HDO4945/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1982 Mar 5;215(4537):1249-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7058343" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Aromatase Inhibitors ; Binding Sites/drug effects ; Contraceptives, Oral/*pharmacology ; Estrogens/*biosynthesis ; Female ; Humans ; Kinetics ; Microsomes/enzymology ; Norethindrone/*pharmacology ; Oxidoreductases/*antagonists & inhibitors ; Placenta/enzymology ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 73
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-07-23
    Beschreibung: The sexual behavior of rhesus monkeys in 15 male-female pairings was observed in both a large and a small area during the follicular and luteal phases of the female's cycle. Males ejaculated in all tests at the follicular phase of the female's cycle and in 53 percent of tests at the luteal phase. However, a significant decline in ejaculation during tests at the luteal phase occurred in the large, but not in the small area. Thus the degree to which the pair's sexual behavior was influenced by the female's hormonal state depended on the spatial conditions of the test.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wallen, K -- MH35835/MH/NIMH NIH HHS/ -- RR-00165/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1982 Jul 23;217(4557):375-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7201164" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Copulation ; Ejaculation ; *Estrus ; Female ; Macaca/*physiology ; Macaca mulatta/*physiology ; Male ; Pregnancy ; Proestrus ; Sexual Behavior, Animal/*physiology ; Social Behavior ; *Spatial Behavior
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 74
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-12-24
    Beschreibung: Spectral analysis of spontaneous fluctuations in human fetal movement revealed strong oscillations at frequencies between 0.24 and 0.90 cycle per minute, which are much higher than those of the cyclic alternation of quiet and active states in the fetus and neonate. Oscillations at frequencies up to 2.88 cycles per minute were also detected, but they were usually much weaker. The prominent peaks in the fetal movement spectra are in the frequency range of recently reported neonatal motor rhythms, and indicate the existence of a cyclic process controlling spontaneous motor output that oscillates near one cycle per minute and begins to function in utero.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Robertson, S S -- Dierker, L J -- Sorokin, Y -- Rosen, M G -- M01RR00210/RR/NCRR NIH HHS/ -- P50HD11089/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1982 Dec 24;218(4579):1327-30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7146916" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Female ; Fetus/*physiology ; Humans ; *Movement ; Pregnancy ; Pregnancy Trimester, Third ; Spectrum Analysis/methods ; Time Factors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 75
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-03-19
    Beschreibung: Laetrile administered orally ot pregnant hamsters caused skeletal malformations in the offspring, but intravenous laetrile filed to result in embryopathic effects. Oral laetrile significantly increased in situ cyanide concentrations, while intravenous laetrile did not. Thiosulfate administration protected embryos from the teratogenic effects of oral laetrile. The embryopathic effects of oral laetrile appear to be due to cyanide released by bacterial beta-glucosidase activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Willhite, C C -- New York, N.Y. -- Science. 1982 Mar 19;215(4539):1513-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7063858" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Abnormalities, Drug-Induced/*etiology ; Administration, Oral ; Amygdalin/administration & dosage/metabolism/*toxicity ; Animals ; Cricetinae ; Female ; Injections, Intravenous ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 76
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-03-05
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frisch, R E -- New York, N.Y. -- Science. 1982 Mar 5;215(4537):1272-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7199206" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amenorrhea/*physiopathology ; Female ; Humans ; *Lactation ; *Nutritional Physiological Phenomena ; *Postpartum Period ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 77
    Publikationsdatum: 1982-03-12
    Beschreibung: The concentration of oxytocin receptors increased in the myometrium of pregnant women and reached maximum levels in early labor. Concentrations of oxytocin receptors were also high in the decidua and reached a maximum at parturition. In vitro, prostaglandin production by the decidua, but not by the myometrium, was increased by the addition of oxytocin. Oxytocin may therefore stimulate uterine contractions by acting both directly on the myometrium and indirectly on decidual prostaglandin production. Oxytocin receptors are probably crucial for the onset of human labor, and the stimulus for the increase in uterine prostaglandins may be oxytocin originating from the fetus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fuchs, A R -- Fuchs, F -- Husslein, P -- Soloff, M S -- Fernstrom, M J -- HD8406/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1982 Mar 12;215(4538):1396-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6278592" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Decidua/physiology ; Female ; Humans ; *Labor, Obstetric ; Myometrium/physiology ; Oxytocin/*physiology ; Pregnancy ; Prostaglandins E/biosynthesis ; Prostaglandins F/biosynthesis ; Receptors, Cell Surface/*physiology ; Uterus/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 78
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-07-09
    Beschreibung: A new process has been developed which is called "Boradeption" to signify boronic acid--dependent phase transfer of water-insoluble agents. Highly fluorescent boronic acid dervatives, FluoroBoras, are solubilized with a physiologically compatible carrier buffer containing a receptor group for boronate adduct formation. The system can be used to stain living cells. In another variation of the Boradeption concept, an insoluble reporter molecule containing a boronate receptor is solubilized with a carrier buffer containing a boronic acid functional group. The boronate-receptor complexes, which are in dynamic equilibrium, can be designed as vital stains and reagents for a variety of biological and medical applications.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gallop, P M -- Paz, M A -- Henson, E -- AG-00376-07/AG/NIA NIH HHS/ -- HL-20764-04A1/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1982 Jul 9;217(4555):166-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6178158" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Biological Transport ; *Boron Compounds/therapeutic use ; *Boronic Acids/therapeutic use ; *Cell Membrane Permeability ; Cells, Cultured ; Chemical Phenomena ; Chemistry ; Chromogenic Compounds/metabolism ; Cricetinae ; Fibroblasts ; Fluorescent Dyes/metabolism ; Humans ; Rats ; Staining and Labeling
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 79
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-05-07
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kline, J -- New York, N.Y. -- Science. 1982 May 7;216(4546):564.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7071603" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alcoholic Beverages/*adverse effects ; Female ; Humans ; Pregnancy ; Pregnancy Complications/*chemically induced
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 80
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-02-26
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Logeat, F -- Sartor, P -- Hai, M T -- Milgrom, E -- New York, N.Y. -- Science. 1982 Feb 26;215(4536):1134-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7063848" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Embryo Implantation ; Endometrium/*metabolism ; Female ; Pregnancy ; Rats ; Receptors, Estrogen/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 81
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-07-09
    Beschreibung: Prolactin administration reportedly increases blood pressure in rats and rabbits. To study the effects of prolactin deficiency on blood pressure, rats were given saline, normal rabbit serum, or rabbit antiserum to rat prolactin on postnatal days 2 to 5. Both males and females given antiserum had significantly lower blood pressure at 14 weeks than rats given saline or normal rabbit serum. Blood pressure differences between females given antiserum and females given saline disappeared during and following pregnancy. The antiserum also lowered the concentration of prolactin in plasma 49 percent in males and decreased the prolactin response to ether stress in both sexes. These results suggest that endogenous prolactin is involved in blood pressure regulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mills, D E -- Buckman, M T -- Peake, G T -- New York, N.Y. -- Science. 1982 Jul 9;217(4555):162-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7089550" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Newborn ; *Blood Pressure ; Female ; Immune Sera/pharmacology ; Male ; Pregnancy ; Pregnancy, Animal ; Prolactin/blood/immunology/*physiology ; Rabbits ; Rats ; Rats, Inbred Strains ; Sex Characteristics ; Sodium Chloride/pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 82
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-04-02
    Beschreibung: One of six monoclonal antibodies raised against purified human placental alkaline phosphatase cross-reacts with the adult and fetal forms of intestinal alkaline phosphatase. The placental and intestinal enzymes are nonallelic. A new electrophoretic titration procedure was used to assess the relative reactivities of the different enzymes with the antibody. The placental enzyme was the most reactive. However, the adult intestinal enzyme showed greater reactivity than the fetal enzyme. The determinants to which the antibody binds on these three forms of alkaline phosphatase presumably differ in their detailed molecular configurations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gogolin, K J -- Wray, L K -- Slaughter, C A -- Harris, H -- GM07511/GM/NIGMS NIH HHS/ -- GM20138/GM/NIGMS NIH HHS/ -- GM27018/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1982 Apr 2;216(4541):59-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6175022" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alkaline Phosphatase/genetics/*immunology ; Alleles ; Antibodies, Monoclonal/*immunology ; Antibody Specificity ; Cross Reactions ; Epitopes ; Female ; Glycoproteins/*immunology ; Humans ; Intestines/enzymology ; Placenta/enzymology ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 83
    Publikationsdatum: 1982-04-16
    Beschreibung: We studied the relationship between cerebral oxygen consumption and cerebral oxygen delivery (cerebral blood flow x arterial oxygen content) in fetal, newborn, and adult sheep, Relative to the amount of oxygen consumed, cerebral oxygen delivery in the fetus exceeds that in the lamb and adult by 70 percent. This may represent a protective advantage for the fetus or simply a necessary adaptation to the low arterial oxygen pressure in the intrauterine environment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jones, M D Jr -- Rosenberg, A A -- Simmons, M A -- Molteni, R A -- Koehler, R C -- Traystman, R J -- HD-13830/HD/NICHD NIH HHS/ -- HL-10342/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1982 Apr 16;216(4543):324-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6801768" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Newborn/*physiology ; Brain/*blood supply/*embryology ; Carbon Dioxide/blood ; Female ; Oxygen/*blood ; Oxygen Consumption ; Pregnancy ; Sheep
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 84
    facet.materialart.
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-07-23
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G -- New York, N.Y. -- Science. 1982 Jul 23;217(4557):335.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7046049" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Abnormalities, Drug-Induced/*epidemiology ; Animals ; Clinical Trials as Topic ; Dicyclomine ; Doxylamine/*adverse effects ; Drug Combinations/adverse effects ; Female ; Heart Septal Defects, Ventricular/chemically induced ; Hernia, Diaphragmatic/chemically induced ; Humans ; Macaca ; Pregnancy ; Pyridines/*adverse effects ; Pyridoxine/*adverse effects ; Rats ; United States ; United States Food and Drug Administration
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 85
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-12-10
    Beschreibung: The discovery that cis-diamminedichloroplatinum(II) (cis-DDP) has clinically useful antitumor properties and can form platinum blues spawned an extensive investigation of its chemistry in water. Several new molecules have been synthesized, some rather old ones have been characterized for the first time, and clues have begun to emerge about the chemical interaction of cis-DDP with its likely biological target, DNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lippard, S J -- New York, N.Y. -- Science. 1982 Dec 10;218(4577):1075-82.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6890712" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Chemical Phenomena ; Chemistry ; *Cisplatin ; *Dna ; Hydrolysis ; Pigments, Biological
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 86
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-12-03
    Beschreibung: The visual response is initiated by light reception and transduction into chemical and electrical energy in the outer-segment membranes of rod and cone cells. Recent research on the molecular events controlled by light has clarified the roles of some of the rod outer-segment biomolecules. These developments and the current unresolved questions are described.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Brien, D F -- New York, N.Y. -- Science. 1982 Dec 3;218(4576):961-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6291153" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Blood Proteins/metabolism ; Calcium/metabolism ; Chemical Phenomena ; Chemistry ; Enzyme Activation ; Enzymes/metabolism ; GTP-Binding Proteins ; Light ; Membranes/metabolism ; Models, Biological ; Phosphoric Diester Hydrolases/biosynthesis ; Photoreceptor Cells/*metabolism ; Receptors, Cell Surface/metabolism ; Rhodopsin/metabolism ; Rod Cell Outer Segment/*metabolism ; Vision, Ocular/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 87
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-10-01
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1982 Oct 1;218(4567):6, 8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123219" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Child ; Female ; Humans ; Iodine Radioisotopes/*adverse effects ; Nuclear Reactors ; Potassium Iodide/*therapeutic use ; Pregnancy ; Thyroid Gland/metabolism ; United States ; United States Food and Drug Administration
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 88
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-10-29
    Beschreibung: Pregnant Swiss Webster mice were fed a diet moderately deficient in zinc from day 7 of gestation until parturition. Offspring of these mice showed depressed immune function through 6 months of age. In addition, the second and third filial generations, all of which were fed only the normal control diet, continued to manifest reduced immunocompetence, although not to the same degree as in the first generation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beach, R S -- Gershwin, M E -- Hurley, L S -- New York, N.Y. -- Science. 1982 Oct 29;218(4571):469-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123244" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antibody Formation ; Female ; Immune Tolerance ; Immunoglobulin M/analysis ; Immunologic Deficiency Syndromes/*embryology ; Mice ; Pregnancy ; Time Factors ; Zinc/*deficiency
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 89
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-03-26
    Beschreibung: The increasing availability and utilization of legal abortion in the United States has several important effects on public health in the 1970's. It reduced deaths and surgical complications among women of childbearing age; it made possible the development of safer surgical procedures for pregnancy termination; and it increased the provision of low-cost outpatient gynecologic services. There is some concern about potential adverse outcomes in future desired pregnancies and possibly higher risks of breast cancer in certain women.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cates, W Jr -- New York, N.Y. -- Science. 1982 Mar 26;215(4540):1586-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7071579" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Abortion, Legal/adverse effects/methods/*utilization ; Breast Neoplasms/etiology ; Costs and Cost Analysis ; Ethics, Medical ; Female ; Humans ; Pregnancy ; Professional Misconduct ; Risk Assessment ; United States ; the increased availability and utilization of abortion. The legalization of ; abortion has led to a decrease in deaths and surgical complications among women ; of childbearing age, the development of safer procedures for pregnancy ; termination, and the provision of low-cost outpatient services. Adverse outcomes ; in future pregnancies and an increase in breast cancer risk are two of the ; possible negative results of the increased abortion rate. Three graphs and a ; statistical table illustrate the article.
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 90
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-03-19
    Beschreibung: Pregnant rats underfed in the first 2 weeks of gestation had offspring with normal body weight at birth and weaning. However, starting at about 5 weeks of age the male offspring became hyperphagic and gained more weight than the controls. The female offspring did not overeat and did not become obese. Both male and female progeny showed increased fat cell size as adults. In males the epididymal and retroperitoneal fat pads were significantly enlarged nd adipocytes in these pads were hypertrophied. In females and fat pads were not enlarged, but adipocytes in the parametrial pads were hypertrophied.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jones, A P -- Friedman, M I -- AM-20022/AM/NIADDK NIH HHS/ -- RR 07048/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1982 Mar 19;215(4539):1518-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7063860" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adipose Tissue/*cytology ; Animals ; Female ; Gestational Age ; Nutrition Disorders/*complications ; Obesity/*etiology ; Pregnancy ; *Pregnancy, Animal ; Rats ; Sex Factors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 91
    Publikationsdatum: 1982-01-15
    Beschreibung: Exposure of mice to the herbicide 2,4-dichlorophenyl-p-nitrophenyl ether during gestation produces abnormalities that are not readily apparent at birth but become obvious as the pups mature. By 2 weeks after birth there are severe intraorbital defects resulting from destruction of the Harderian glands behind the eyes. This effect is noticeable only postnatally because the Harderian gland does not grow or function until after birth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gray, L E Jr -- Kavlock, R J -- Chernoff, N -- Ferrell, J -- McLamb, J -- Ostby, J -- New York, N.Y. -- Science. 1982 Jan 15;215(4530):293-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7053576" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Abnormalities, Drug-Induced/*pathology ; Animals ; Female ; Harderian Gland/abnormalities/*drug effects ; Lacrimal Apparatus/*drug effects ; Male ; Mice ; Phenyl Ethers/*toxicity ; Pregnancy ; Rats ; Thyroxine/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 92
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-05-07
    Beschreibung: Exposure of rats to phenobarbital during late prenatal development decreased the concentration of testosterone in plasma and the brain during the late fetal, early postnatal, pubertal, and adult periods, By decreasing the production of testosterone in the brain during the period of sexual differentiation, phenobarbital may lead to sexual dysfunction in later life.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gupta, C -- Yaffe, S J -- Shapiro, B H -- GM-26222/GM/NIGMS NIH HHS/ -- HD -10063/HD/NICHD NIH HHS/ -- T-32GM07514/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1982 May 7;216(4546):640-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7200262" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Brain/embryology ; Female ; Infertility, Male/*chemically induced ; Male ; Phenobarbital/*pharmacology ; Pregnancy ; Pregnancy, Animal/drug effects ; Rats ; Sex Differentiation/*drug effects ; Testis/metabolism ; Testosterone/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 93
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-06-25
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tucker, H A -- Ringer, R K -- New York, N.Y. -- Science. 1982 Jun 25;216(4553):1381-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7201162" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animal Husbandry/*methods ; Animals ; Animals, Domestic/*physiology ; Breeding ; Cattle ; Chickens/physiology ; Eggs ; Estrus/radiation effects ; Female ; Gonadal Steroid Hormones/*radiation effects ; *Light ; Male ; Milk ; Ovulation/radiation effects ; *Periodicity ; Pregnancy ; Reproduction/radiation effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 94
    Publikationsdatum: 1981-08-14
    Beschreibung: Two maternally derived chromosome sets and both maternal histocompatibility antigen haplotypes were identified in the tissues of a malformed triploid acardiac twin that developed within the same chorion as its normal twin. These findings indicate that the twins arose as a result of independent fertilizations, by two different spermatozoa, of a normal haploid ovum and its diploid first-meiotic-division polar body.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bieber, F R -- Nance, W E -- Morton, C C -- Brown, J A -- Redwine, F O -- Jordan, R L -- Mohanakumar, T -- New York, N.Y. -- Science. 1981 Aug 14;213(4509):775-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7196086" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Abnormalities, Severe Teratoid/*genetics ; Female ; Fertilization ; HLA Antigens/genetics ; Heart Defects, Congenital/*genetics ; Humans ; Infant, Newborn ; Karyotyping ; Male ; Meiosis ; Polyploidy ; Pregnancy ; *Twins
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 95
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-05-08
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1981 May 8;212(4495):610.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7194507" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Cattle ; *Embryo Transfer ; Female ; Humans ; Pregnancy
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 96
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-05-29
    Beschreibung: A summary of 111 studies identified in a survey of the world literature on familial resemblances in measured intelligence reveals a profile of average correlations consistent with a polygenic mode of inheritance. There is, however, a marked degree of heterogeneity of the correlations within familial groupings, which is not moderated by sex of familial pairing or by type of intelligence test used.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bouchard, T J Jr -- McGue, M -- 5 T32 MH14647/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1981 May 29;212(4498):1055-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7195071" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Family ; Female ; *Genetics, Medical ; Humans ; *Intelligence ; Intelligence Tests ; Male ; Pregnancy ; Sex Factors ; Twins
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 97
    Publikationsdatum: 1981-10-09
    Beschreibung: The serum of lactating rats that have never been infected with the protozoan parasite Trypanosoma lewisi contains a rheumatoid factor-like immunoglobulin M (IgM). This IgM amplifies a specific immunoglobulin G (IgG) response to the parasite and accounts for the unusual resistance of previously uninfected lactating rats and their suckling pups to infection with T. lewisi. A similar rheumatoid factor-like IgM, which is induced late in the usual course of infection with T. lewisi in nonlactating rats, amplifies an earlier IgM response and terminates the infection. To our knowledge, this is the first description of a rheumatoid factor, which is classified as an autoimmune antibody, acting in a protective manner.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clarkson, A B Jr -- Mellow, G H -- New York, N.Y. -- Science. 1981 Oct 9;214(4517):186-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7025211" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Suckling/immunology ; Antigen-Antibody Complex ; Female ; Immunoglobulin G ; Immunoglobulin M/*immunology ; *Lactation ; Pregnancy ; Rats ; Rheumatoid Factor/*immunology ; Trypanosoma lewisi/immunology ; Trypanosomiasis/*immunology
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 98
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-03-20
    Beschreibung: Gender identity depends largely on postnatal environmental influences, while sex-dimorphic behavior and temperamental sex differences appear to be modified by prenatal sex hormones. A role of the prenatal endocrine milieu in the development of erotic partner preference, as in hetero-, homo-, or bisexual orientation, or of cognitive sex differences has not been conclusively demonstrated.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ehrhardt, A A -- Meyer-Bahlburg, H F -- New York, N.Y. -- Science. 1981 Mar 20;211(4488):1312-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209510" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adolescent ; Adrenal Hyperplasia, Congenital/metabolism/psychology ; Adult ; Androgens/pharmacology ; Behavior/drug effects ; Child ; Cognition/drug effects ; Embryo, Mammalian/drug effects ; Estrogens/pharmacology ; Female ; *Gender Identity ; Gonadal Steroid Hormones/*pharmacology ; Humans ; *Identification (Psychology) ; Male ; Pregnancy ; Pregnancy Complications/drug therapy ; Progestins/pharmacology/therapeutic use ; Sexual Behavior/*drug effects
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 99
    Publikationsdatum: 1981-09-04
    Beschreibung: Ovaries removed from New Zealand White rabbits were perfused and exposed to gonadotropin in vitro. The ova ovulated in vitro (N = 56) were recovered and cultured and then transferred to the oviducts of six previously mated Dutch Belted hosts. Twelve of the resulting 36 offspring (33.3 percent) were white. In control matings between 12 Dutch Belted females (six randomly selected and the six hosts) and New Zealand White males, only one of 80 (1.2 percent) offspring was white. These data indicate that ova ovulated in vitro can be transferred to the oviduct of a host rabbit where they may be fertilized and after implantation may develop into viable embryos.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kobayashi, Y -- Santulli, R -- Wright, K H -- Wallach, E E -- HD-05948/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1981 Sep 4;213(4512):1127-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7268420" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Chorionic Gonadotropin/*pharmacology ; Embryo Transfer ; Female ; *Fertilization in Vitro ; Ovary/drug effects/*physiology ; *Ovulation/drug effects ; Pregnancy ; Rabbits
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 100
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-08-14
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Klotz, I M -- Haney, D N -- King, L C -- New York, N.Y. -- Science. 1981 Aug 14;213(4509):724-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7256275" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Anemia, Sickle Cell/*drug therapy ; Aspirin/analogs & derivatives/therapeutic use ; Chemical Phenomena ; Chemistry ; *Hemoglobin, Sickle ; Humans ; Protein Binding/drug effects ; Protein Conformation ; Salicylates/*therapeutic use ; Solubility ; Structure-Activity Relationship
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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