@article{Siren1982, author = {Sir{\´e}n, Anna-Leena}, title = {Differences in central actions of arachidonic acid and prostaglandin F\(_{2\alpha}\) between spontaneously hypertensive and normotensive rats}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63324}, year = {1982}, abstract = {Prostag1andin F\(_{2\alpha}\) (PGF\(_{2\alpha}\)) is one of the most common metabo1ites of arachidonic acid (M) in rat brain. When administered intracerebroventricularly (i.c.v.) to rats, both AA and PGFal exert dose-related hypertensive, tachycardic and hyperthermic effects. Metabolie alterations in the endogenaus formation of some prostaglandins in the brain-stem of spontaneously hypertensive rats (SHR) have been reported. Therefore the central effects of AA and PGF \(_{2\alpha}\) on blood pressure, heart rate and body temperature were studied both in SHR and nonootensive Wistar rats (NR) under urethane-anaesthesia. The hypertensive effect of AA i.c.v. (0.01-100 \(\mu\)g/rat) was larger in magni tude in SHR than in NR, but there was no significant difference in the M-induced changes of heart rate and body temperature between the groups. Pretreatment of NR wi th soditm1 :meclofenamate (1 mg/rat i.c.v.) antagonised the central effects of M indicating that these effects are not due to M itself but to its conversion to prostaglandins. Unlike the effects of AA, the central hypertensive, tachycardic and hyperthennic responses to PGF\(_{2\alpha}\) (0.5-50 l-lg/rat i.c.v .) were significantly attenuated in SHR. The present results obtained with M are conpatible with the previous assumption that the synthesis of prostaglandins in the brain of SHR might differ from that in NR. The results also demonstrate that the central effects of PGF\(_{2\alpha}\) are reduced in SHR.}, subject = {Neurobiologie}, language = {en} } @article{SchairerHoppeSebaldetal.1982, author = {Schairer, H. U. and Hoppe, J. and Sebald, Walter and Friedl, P.}, title = {Topological and functional aspects of the proton conductor, F\(_0\), of the Escherichia coli ATP-synthase}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-62721}, year = {1982}, abstract = {The isolated H\(^+\) conductor, F\(_0\) , of the Escherichia co1i ATP-synthase consists of three subunits, a, b, and c. H\(^+\) -permeable liposomes can be reconstit~ted with F\(_0\) and lipids; addition of F\(_1\)-ATPase reconstitutes a functional ATP-synthase. Mutants with altered or misslng F\(_0\) subunits are defective in H\(^+\) conduction. Thus, all three subunits are necessary for the expression of H\(^+\) conduction. The subunits a and b contain binding sites for F\(_1\)• Computer calculations, cross-links, membrane-permeating photo-reactive labels, and proteases were used to develop tentative structural models for the individual F\(_0\) subunits.}, subject = {Biochemie}, language = {en} } @article{SebaldFriedlSchaireretal.1982, author = {Sebald, Walter and Friedl, P. and Schairer, H. U. and Hoppe, J.}, title = {Structure and genetics of the H\(^+\)-conducting F\(_0\) portion of the ATP synthase}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-62733}, year = {1982}, abstract = {The ATP synthase occurs in remarkably conserved form in procaryotic and eucaryotic cells. Thus, our present knowledge of ATP synthase is derived from sturlies of the enzyme from different organisms, each affering specific experimental possibilities. In recent tim es, research on the H\(^+\) -conducting F0 part of the ATP synthase has been greatly stimulated by two developments in the Escherichio coli system. Firstly, the purification and reconstitution of the whole ATP synthase as weil as the proton conductor Fa from E. coli have been achieved. These functionally active preparations are well defined in terms of subunit composition, similar to the thermophilic enzyme from PS-3 studied by Kagawa's group.u Secondly, the genetics and the molecular cloning of the genes of all the F\(_0\) subunits from E. coli yielded information on the function of subunit polypeptides and essential amino acid residues. Furthermore, the amino acid sequence of hydrophobic F\(_0\) subunits, which are difficult to analyze by protein-chemical techniques, could be derived from the nucleotide sequence of the genes. These achievements, which shall be briefly summarized in the next part of this communication, provide the framework to study specific aspects of the structure and function of the F\(_0\) subunits.}, subject = {Biochemie}, language = {en} } @article{ViebrockPerzSebald1982, author = {Viebrock, A. and Perz, A. and Sebald, Walter}, title = {The imported preprotein of the proteolipid subunit of the mitochondrial ATP synthase from Neurospora crassa. Molecular cloning and sequencing of the mRNA}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-62742}, year = {1982}, abstract = {No abstract available}, subject = {Biochemie}, language = {en} } @article{SchartlBarnekowBaueretal.1982, author = {Schartl, Manfred and Barnekow, A. and Bauer, H. and Anders, F.}, title = {Correlations of inheritance and expression between a tumor gene and the cellular homolog of the Rous sarcoma virus-transforming gene in Xiphophorus}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-61937}, year = {1982}, abstract = {No abstract available}, subject = {Physiologische Chemie}, language = {en} } @article{BarnekowSchartlAndersetal.1982, author = {Barnekow, A. and Schartl, Manfred and Anders, F. and Bauer, H.}, title = {Identification of a fish protein associated with a kinase activity and related to the Rous sarcoma virus transforming protein}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-61946}, year = {1982}, abstract = {No abstract available}, subject = {Physiologische Chemie}, language = {en} } @article{KuehnBurschkaWerner1982, author = {Kuehn, A. and Burschka, Christian and Werner, H.}, title = {Synthesis and molecular structure of C\(_5\)H\(_5\)(P-/-Pr\(_3\))Pd(η\(^1\), η\(^3\)-C\(_3\)H\(_4\))Pd(P-/-Pr\(_3\))Br: a compound formed through insertion of allene into a metal-metal bond\(^1\)}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-46592}, year = {1982}, abstract = {No abstract available}, subject = {Chemie}, language = {en} } @article{Siren1982, author = {Sir{\´e}n, Anna-Leena}, title = {Central cardiovascular and thermal effects of Prostaglandin E2 in rats}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-47960}, year = {1982}, abstract = {Prostaglandin E2 (PGE2) increased the blood pressure, heart rate and body temperature, when administered at the doses ofO.OOI-IO,ug into the lateral cerebral ventricle (i.c.v.) of the urethane-anesthetised rat. The highest dose of 10 ,ug/rat induced a strong initial hypotensive effect. lntravenously (i.v.), PGE2 at the doses of 0.01-10 ,ug/rat caused a biphasic blood pressure response with dose-related initial decreases followed by slight increases in blood pressure. The heart rate and body temperature were slightly increased by i.v. administrations of PGE2 . The highest i.v. dose of 10 ,ug/rat initially decreased also the heart rate. Central pretreatment with indomethacin ( I mg/rat i.c.v.) partly antagonised all of the recorded central effects of PGE2 , while sodium meclofenamate (I mg/rat i.c. v.) abolished the hypertensive response to i.c. v. administered PGE2 but failed to significantly affect the PGE2-induced rises of heart rate and body temperature. The results support the previous suggestions that PGE2 may participate in the central cardiovascular and thermoregulatory contro!. The results also suggest that indomethacin and sodium meclofenamate antagonize the effects of exogenous prostaglandins. Since sodium meclofenamate, unlike indomethacin, affected preferentially the hypertensive response to centrally administered PGE2 , there may be differences in the sites and/or modes of action between these drugs.}, subject = {Physiologie}, language = {en} } @article{Siren1982, author = {Sir{\´e}n, Anna-Leena}, title = {Central cardiovascular and thermal effects of prostaglandin D2 in rats}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-48658}, year = {1982}, abstract = {Prostaglandin D2 (PGD2) is the most common prostaglandin type of tile rat brain. Recently a neurornodulator role for PGD2 has been suggested. In the present work the central cardiovascular and thermal effects of PGDz were studied in urethane-anaesthetised rats. Mlen adrndnistered at the doses of 0.001-10 ~g/rat into the lateral cerebral ventricle(i.c.v.), PGD2 slightly increased the blood pressure, heart rate and body ternpera~ ure. The highest dose caused also an initial hypotensive effect. Upon lntravenous injections PGD2 (0.1-10 ~g/rat) initially decreased and then weakly increased the blood pressure but had only negligible effects on heart rate and body temperature. Central pretreatment with sodium meclofenamate or indomethacin (1 mg/rat i.c.v.) antagonised effectively all the recorded central effects of PGD2. The central cardiovascular and thermal effects of PGD2 were much weaker than those obtained earlier with other prostaglandins, such as PGF2alpha and PGE2.. Therefore, in spite of its abundance in the brain PGD2 may not be very important for the central cardiovascular and thermal regulation in the rat.}, subject = {Medizin}, language = {en} } @article{WernerHeiserBurschka1982, author = {Werner, Helmut and Heiser, Bernd and Burschka, Christian}, title = {Cycloadditionsreaktionen von Organometallkomplexen, I: die Synthese viergliedriger Metalla-Heterocyclen durch [2 + 2]-Cycloaddition aus (Isonitril)cobalt-Komplexen und Isocyanaten sowie Isothiocyanaten}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-46589}, year = {1982}, abstract = {No abstract available}, subject = {Chemie}, language = {de} } @article{KreftHughes1982, author = {Kreft, J{\"u}rgen and Hughes, Colin}, title = {Cloning vectors derived from plasmids and phage of Bacillus}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-47014}, year = {1982}, abstract = {No abstract available}, language = {en} } @article{UlrichsDeltzThiedeetal.1982, author = {Ulrichs, Karin and Deltz, E. and Thiede, A. and M{\"u}ller-Ruchholtz, W.}, title = {Lymphoid tissue transplantation in rats leads to a GVHR, inducing a specific T-cell mediated autoreactivity against MHC-antigens}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-45420}, year = {1982}, abstract = {No abstract available}, language = {en} } @article{LutzJaggiSchlatter1982, author = {Lutz, Werner K. and Jaggi, W. and Schlatter, C.}, title = {Covalent binding of diethylstilbestrol to DNA in rat and hamster liver and kidney [Short Communication]}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-61066}, year = {1982}, abstract = {No abstract available}, subject = {Toxikologie}, language = {en} } @article{TackeLangeBentlage1982, author = {Tacke, Reinhold and Lange, H. and Bentlage, A.}, title = {Synthese und Eigenschaften von (Hydroxy-methyl)diorganylsilanen}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63727}, year = {1982}, abstract = {The synthesis of the (hydroxymethyl)diorganylsilanes R\(^1\)R\(^2\)Si(H)CH\(_2\)OH (4a: R\(^1\) = R\(^2\) = CH\(_3\), 2-silaisobutanol; 4b: R\(^1\) = CH\(_3\), R\(^2\) == C\(_6\)H\(_5\); 4c: R\(^1\) == R\(^2\) = C\(_6\)H\(_5\))is achieved bythereactionof R\(^1\)R\(^2\)Si(Cl)CH\(_2\)Cl (2a-c) with AcOH/NEt\(_3\) to R\(^1\)R\(^2\)Si(OAc)CH\(_2\)OAc (Ja-c), followed by treating with LiAlH\(_4\) and hydrolysis.}, subject = {Anorganische Chemie}, language = {de} } @article{TackeLangeAttarBashi1982, author = {Tacke, Reinhold and Lange, H. and Attar-Bashi, M. T.}, title = {Baseninduzierte 1,2-Hydridverschiebungen vom Silicium zum Kohlenstoff: "Anomale" Substitutionsreaktionen an (Halogen-methyl)diorganylsilanen}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63734}, year = {1982}, abstract = {(C\(_6\)H\(_5\))\(_2\)Si(H)CH\(_2\)X (1 a: X = Cl; 1 b: X = I) und C\(_6\)H\(_5\)(CH\(_3\))Si(H)CH\(_2\)CI (10) reagieren mit LiOCH\(_2\)CH\(_2\)N(CH\(_3\))\(_2\) (2b) zu den Alkoxysilanen (C\(_6\)H\(_5\))\(_2\)Si(CH\(_3\))OCH\(_2\)CH\(_2\)N(CH\(_3\))\(_2\) (5) bzw. C\(_6\)H\(_5\)(CH\(_3\))\(_2\)SiOCH\(_2\)CH\(_2\)N(CH\(_3\))\(_2\) (12). Die Bildung dieser unerwarteten Reaktionsprodukte wird durch einen nucleophilen Angriff des Alkoxids am Si-Atom gedeutet. dem sich eine intramolekulare 1 ,2-Hydridverschiebung vom Si zum C und Eliminierung von Cl e anschließt. Mit weichen Basen, wie z. B. I (-) und (-)SCH\(_2\)CH\(_2\)N(CH\(_3\))\(_2\), wurden dagegen "normale" Substitutionsreaktionen am C-Atom der SiCH\(_2\)Cl-Gruppe beobachtet}, subject = {Anorganische Chemie}, language = {de} } @article{WrobelTackeWannagatetal.1982, author = {Wrobel, D. and Tacke, Reinhold and Wannagat, U. and Harder, U.}, title = {Sila-Analoga terti{\"a}rer Carbinole mit Duftwirkung}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63705}, year = {1982}, abstract = {Es wurden Silanale RR'R"SiOH 7 dargestellt, die Carbinolen RR'R"COH 1 (R = CH\(_3\) , R' = CH\(_3\) , CH = CH\(_2\) , C\(_2\)H\(_5\) , R" = CH\(_2\)C\(_6\)H\(_5\) , CH\(_2\)CH\(_2\)C\(_6\)H\(_5\)) mit starker Duftwirkung im Bereich blumiger Noten (Maigl{\"o}ckchen-Hyazinthe-Rose) analog waren. Ihr Syntheseweg verl{\"a}uft {\"u}ber die Reaktionsschritte (3) mit teilweise bisher unbekannten Zwischenstufen 6. Die Sila-Riechstoffe 7 sind in Intensit{\"a}t und Duftbereich den Carbinolen 1 {\"a}hnlich, doch ist allgemein eine Verschiebung der Duftnote von Maigl{\"o}ckchen zu Hyazinthe zu beobachten.}, subject = {Anorganische Chemie}, language = {de} } @article{TackeFrohneckeNiedner1982, author = {Tacke, Reinhold and Frohnecke, J. and Niedner, R.}, title = {Darstellung und Eigenschaften potentiell curarewirksamer Silicium-Verbindungen, IV}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63711}, year = {1982}, abstract = {Die Synthese der Organosilicium· Verbindungen 3 a- d wird erstmalig beschrieben. Sie wurden durch ihre physikalischen, chemischen und pharmakologischen Eigenschaften charakterisiert. Ja- d wirken als uKurzzeit-Muskelrelaxantien", deren Entgiftung durch Hydrolyse der Si- OeBindungen (Sollbruchstellen) erfolgt.}, subject = {Anorganische Chemie}, language = {de} } @article{ChristlLechner1982, author = {Christl, Manfred and Lechner, M.}, title = {Einige Reaktionen des 8,8-Dibromtetracyclo[5.1.0.0\(^{2,4}\).0\(^{3,5}\)]octans}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-58108}, year = {1982}, abstract = {No abstract available}, subject = {Organische Chemie}, language = {de} } @article{LeiningerKemmerBecketal.1982, author = {Leininger, H. and Kemmer, P. and Beck, K. and Christl, M.}, title = {7-Thiatetracyclo[4.1.0.0\(^{2,4}\).0\(^{3,5}\)]heptan (Benzvalensulfid) - Synthese und Reaktionen}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-58113}, year = {1982}, abstract = {No abstract available}, subject = {Organische Chemie}, language = {de} } @article{ChristlLang1982, author = {Christl, Manfred and Lang, R.}, title = {Tricyclo[5.1.0.0\(^{2,8}\)]octa-3,5-diene (Octavalene)}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-58124}, year = {1982}, abstract = {No abstract available}, subject = {Organische Chemie}, language = {en} }