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  • Articles  (421)
  • Inorganic Chemistry  (226)
  • Rats  (195)
  • 1980-1984  (362)
  • 1890-1899
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  • Articles  (421)
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  • 11
    Electronic Resource
    Electronic Resource
    Dichlorphosphato-Komplexe von Zinn, Titan und Molybdän Die Kristallstruktur von (AsPh4)2[MoOCl3(PO2Cl2)]2 (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 486 (1982), S. 136-146 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Dichlorophosphato Complexes of Tin, Titanium, and Molybdenum. Crystal Structure of (AsPh4)2[MoOCl3(PO2Cl2)]2The dichlorophosphate complexes (AsPh4)2[SnCl4(PO2Cl2)]2 (I), (AsPh4)2[TiCl4(PO2Cl2)]2 (II) and (AsPh4)2[MoOCl3(PO2Cl2)]2 (III) are prepared by the reactions of SnCl4, TiCl4, and MoCl5, respectively, with AsPh4[PO2Cl2] in dichlormethan solutions. According to their i.r. spectra, the complex anions form dimeric species via the oxygen atoms of the dichlorophosphate groups; the 119Sn Mössbauer spectra of I are reported in addition. The crystal structure of III is solved by X-ray diffraction methods and refined to R = 4.3%. (AsPh4)2[MoOCl3(PO2Cl2)]2 crystallizes in the triclinic space group P1 with one formula unit pro unit cell. The structure consists of tetraphenylarsonium cations and centrosymmetric anions [MoOCl3(PO2Cl2)]22⊖. The molybdenum atoms of the anions are linked via the O atoms of the dichlorophosphate groups forming nonplanar Mo2O4P2 eight-membered rings.
    Notes: Die Dichlorphosphato-Komplexe (AsPh4)2[SnCl4(PO2Cl2)]2 (I), (AsPh4)2[TiCl4(PO2Cl2)]2 (II) und (AsPh4)2[MoOCl3(PO2Cl2)] 2 (III) werden aus SnCl4, TiCl4 bzw. MoCl5 mit AsPh4[PO2Cl2] in Dichlormethanlösung hergestellt. Nach den Schwingungsspektren sind die komplexen Anionen über die O-Atome der Dichlorphosphatgruppen zu Dimeren assoziiert; für I wird zusätzlich das 119Sn-Mößbauer-Spektrum mitgeteilt. Die Kristallstruktur von III wurde mittels Röntgenbeugung ermittelt und bis R = 4,3% verfeinert. (AsPh4)2[MoOCl3(PO2Cl2)]2 kristallisiert triklin in der Raumgruppe P1 mit einer Formeleinheit pro Elementarzelle. Die Struktur besteht aus Tetraphenylarsoniumkationen und zentrosymmetrischen Anionen [MoOCl3(PO2Cl2)]22⊖. Die Molybdänatome der Anionen sind über die O-Atome der Dichlorphosphatgruppe zu einem gewellten Mo2O4P2 Achtring verknüpft. Die äquatorial angeordneten, terminalen Oxoliganden (r MoO = 166 pm) üben auf die Mo—O-Bindungen der Dichlorphosphatliganden einen starken trans-Effekt aus, so daß sich zwei verschiedene Mo—O-Bindungsabstände von 227 bzw. 210 pm ergeben.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19824860116
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  • 12
    Electronic Resource
    Electronic Resource
    A contribution to the crystallochemistry of Ternary Rare Earth Intermetallic Phases (1983)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 507 (1983), S. 235-240 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ein Beitrag zur Kristallchemie ternärer intermetallischer Phasen der Seltenen ErdenEs wird eine Zusammenstellung der Kristalldaten von ternären intermetallischen Phasen der Seltenen Erden gegeben. Die beschriebenen Phasen werden mit einem Übergangselement und einem Element aus dem p-Block des Periodensystems gebildet. Die 1:1:1-Verbindungen werden mit berücksichtigt.Das Legierungsverhalten von Ce und Yb wird kurz diskutiert unter besonderer Beachtung des Trends der molaren Volumen ihrer intermetallischen Phasen.
    Notes: A summary of crystal data concerning ternary intermetallic phases of the rare earths is reported. The phases described are those formed with a transition metal and an element of the p-block of the periodic table. It includes the 1:1:1 compounds.The alloying behaviour of Ce and Yb is then briefly discussed with special consideration for the trends of the molar volumes of their intermetallic phases.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19835071230
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  • 13
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    Bioactive conformation of luteinizing hormone-releasing hormone: evidence from a conformationally constrained analog (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-11-07
    Description: An analog of luteinizing hormone-releasing hormone containing a gamma-lactam as a conformational constraint has been prepared with the use of a novel cyclization of a methionine sulfonium salt. The analog is more active as a luteinizing hormone-releasing hormone agonist that the parent hormone, and provides evidence for a bioactive conformation containing a beta-turn.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Freidinger, R M -- Veber, D F -- Perlow, D S -- Brooks, J R -- Saperstein, R -- New York, N.Y. -- Science. 1980 Nov 7;210(4470):656-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7001627" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Biological Assay ; Cells, Cultured ; Female ; *Gonadotropin-Releasing Hormone/analogs & derivatives ; Hydrogen Bonding ; Lactams ; Protein Conformation ; Rats ; Structure-Activity Relationship
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 14
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    Neurochemical and behavioral evidence for a selective presynaptic dopamine receptor agonist (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-12-05
    Description: A new dopamine analog, 6,7-dihydroxy-2-dimethylaminotetralin (TL-99), was compared to apomorphine in three tests of dopaminergic function in the central nervous system. The tests, performed on rats, included production of changes in locomotor activity (involving both presynaptic and postsynaptic receptors), inhibition of dopa accumulation (quantifying presynaptic receptor activity), and the rotation model (quantifying postsynaptic receptor activation). Apomorphine was efficacious at both presynaptic and postsynaptic receptors, whereas TL-99 was much more efficacious at the presynaptic receptor. This result indicates not only that differences exist between presynaptic and postsynaptic dopamine receptors, but also that these differences may be exploited in the design of selective dopamine agonists.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goodale, D P -- Rusterholz, D B -- Long, J P -- Flynn, J R -- Walsh, B -- Cannon, J G -- Lee, T -- GM 12675/GM/NIGMS NIH HHS/ -- GM-22365/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1980 Dec 5;210(4474):1141-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7444443" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apomorphine/pharmacology ; Behavior, Animal/drug effects ; Brain/*drug effects ; Levodopa/metabolism ; Motor Activity/drug effects ; Naphthols ; Rats ; Receptors, Dopamine/*drug effects ; Synaptic Membranes/*drug effects ; *Tetrahydronaphthalenes
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 15
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    Dorsal root ganglion neurons are destroyed by exposure in utero to maternal antibody to nerve growth factor (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-11-21
    Description: Rats and guinea pigs, when immunized with mouse nerve growth factor, produce antibodies that cross-react with their own nerve growth factor. The antibodies reach developing offspring of these animals both prenatally (rats and guinea pigs) and postnatally (rats). Depriving the fetus of nerve growth factor in this way results in the destruction of up to 85 percent of dorsal root ganglion neurons as well as destruction of sympathetic neurons. Sensory neurons of placodal origin in the nodose ganglion were not affected. These data demonstrate that dorsal root ganglion neurons go through a phase of nerve growth factor dependence in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Johnson, E M Jr -- Gorin, P D -- Brandeis, L D -- Pearson, J -- HD12260/HD/NICHD NIH HHS/ -- HL20604/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1980 Nov 21;210(4472):916-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7192014" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antibodies ; Female ; Ganglia, Spinal/cytology/*embryology/growth & development ; Guinea Pigs ; Lactation ; Maternal-Fetal Exchange ; Milk/immunology ; Nerve Growth Factors/*immunology ; Pregnancy ; Rats
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 16
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    Environmental influences on body weight and behavior in developing rats after neonatal 6-hydroxydopamine (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-08-08
    Description: There is less hyperactive motor activity and better avoidance performance in rat pups treated with 6-hydroxydopamine as neonates and reared with vehicle-treated littermates than in pups reared in litters composed solely of other 6-hydroxydopamine-treated animals. Thus, in this experimental model of hyperactivity, an environmental manipulation provides an alternative to pharmacologic agents in reducing activity and improving learning performance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pearson, D E -- Teicher, M H -- Shaywitz, B A -- Cohen, D J -- Young, J G -- Anderson, G M -- New York, N.Y. -- Science. 1980 Aug 8;209(4457):715-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7394533" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; *Behavior, Animal/drug effects ; *Body Weight/drug effects ; Brain/drug effects/metabolism ; Catecholamines/metabolism ; *Environment ; Hydroxydopamines/*pharmacology ; Rats
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 17
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    Midbrain microinfusions of prolactin increase the estrogen-dependent behavior, lordosis (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-03-25
    Description: Microinfusions of rat prolactin into the dorsal midbrain of estrogen-treated, ovariectomized rats increased lordosis behavior. Midbrain microinfusions of antiserum to prolactin into rats displaying maximum lordosis had the opposite effect. The distribution of a prolactin-like substance in the brain was studied immunocytochemically. The results suggest that a hypothalamic neuronal system projecting to the midbrain contains a prolactin-like substance that plays a role in facilitating this behavior and therefore may mediate some of the effects of estrogen on the brain. These data, together with others from studies of the prolactin gene and its regulation, indicate that it may be possible to analyze a sequence of molecular events in the brain that facilitate a behavioral response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harlan, R E -- Shivers, B D -- Pfaff, D W -- HD-05585/HD/NICHD NIH HHS/ -- HD-05737/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1983 Mar 25;219(4591):1451-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828874" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenalectomy ; Animals ; Castration ; Cerebral Cortex/drug effects/*physiology ; Cosyntropin/pharmacology ; Estradiol/pharmacology ; Female ; Growth Hormone/pharmacology ; Immune Sera ; Kinetics ; Mesencephalon/*physiology ; Oxytocin/pharmacology ; Posture ; Prolactin/administration & dosage/*pharmacology ; Rats ; Sexual Behavior, Animal/*drug effects ; Vasopressins/pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 18
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    Depletion of intracellular polyamines may alter DNA conformation in 9L rat brain tumor cells (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-07-22
    Description: Depletion of polyamines in 9L rat brain tumor cells by treatment with alpha-difluoromethylornithine dramatically altered DNA conformation as measured by viscoelastometry. The reduction of intracellular putrescine and spermidine concentrations to less than 5 percent of their concentrations in control cells decreased the sensitivity of 9L cell DNA to x-irradiation and increased the maximum viscoelastic retardation time of the DNA. Both of these phenomena were reversed by addition of exogenous putrescine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hung, D T -- Marton, L J -- Deen, D F -- Shafer, R H -- CA-13525/CA/NCI NIH HHS/ -- CA-19658/CA/NCI NIH HHS/ -- CA-27343/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 22;221(4608):368-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6408733" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain Neoplasms/*metabolism ; DNA, Neoplasm/*metabolism ; Eflornithine ; Molecular Conformation ; Ornithine/analogs & derivatives/pharmacology ; Polyamines/*metabolism ; Putrescine/metabolism ; Rats ; Spermidine/metabolism ; Viscosity
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 19
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    Some neurons of the rat central nervous system contain aromatic-L-amino-acid decarboxylase but not monoamines (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-03-11
    Description: Neurons containing the enzyme aromatic-L-amino-acid decarboxylase (AADC) but lacking either tyrosine hydroxylase or serotonin were found in the spinal cord of neonatal and adult rats by light and electron microscopic immunocytochemistry. The majority of these neurons localized to area X of Rexed contact ependyma. Thus, spinal AADC neurons have the enzymatic capacity to catalyze directly the conversion of the amino acids tyrosine, tryptophan, or phenylalanine to their respective amines tyramine, tryptamine, or phenylethylamine. These amines normally present in the central nervous system may be of potential clinical significance as endogenous psychotomimetics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jaeger, C B -- Teitelman, G -- Joh, T H -- Albert, V R -- Park, D H -- Reis, D J -- HL-07379-04/HL/NHLBI NIH HHS/ -- HL-18974/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1983 Mar 11;219(4589):1233-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6131537" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aromatic-L-Amino-Acid Decarboxylases/*metabolism ; Biogenic Amines/*metabolism ; Brain/*metabolism ; Neurons/enzymology ; Neurotransmitter Agents/biosynthesis ; Rats ; Spinal Cord/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 20
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    Rapid expulsion of Trichinella spiralis in suckling rats (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-10-05
    Description: Orally administered Trichinella spiralis muscle larvae were rapidly expelled by rat pups suckling an immune dam. The immunity was delivered in the milk; substantial resistance was conferred on normal rat pups suckled for only 24 hours by a Trichinella-immune foster mother. The pups were protected by oral or systemic administration of specific serum antibodies. When infused into a normal lactating dam, these antibodies accumulated in the serum of her suckling pups.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Appleton, J A -- McGregor, D D -- AI 14490/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1984 Oct 5;226(4670):70-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6474191" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Suckling ; Antibodies/immunology ; Colostrum/immunology ; Female ; *Immunity, Maternally-Acquired ; Immunization, Passive ; Intestinal Diseases, Parasitic/*immunology/parasitology ; Intestinal Mucosa/parasitology ; Milk/*immunology ; Rats ; Trichinella/*immunology/physiology ; Trichinellosis/*immunology/parasitology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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