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7-Azatetracyclo[4.1.0.0<sup>2,4</sup>.0<sup>3,5</sup>]heptan - ein neues Valenzisomeres des Azepins
(1979)
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no abstract available
Administration of PGF 2IX (0.2-6.4 J.lg) into the lateral cerebral ventricle (i.c.v.) induced dosedependent increases in blood pressure , heart rate and body temperature in urethane-anaesthetised rats, but had no effect on these parameters when the same dose range was administered intravenously. Peripheral pretreatment with sodium meclofenamate (50 mg/kg s.c.) sltifted all the dose-response curves for PGF 2IX (i.c.v.) to the left, but indomethacin (50 mg/kg s.c.) did not significantly affect those changes. Central pretreatment with sodiurn meclofenamate or indomethacin (1.25 mg per rat i.c.v.) failed to modify significantly the effects of centrally administered PGF 2IX' The results support previous suggestions that PGF 2IX may participate in the central control of the cardiovascular and thermoregulatory systems, and also suggest that there may be differences in the sites and/or modes of action between sodiurn meclofenamate and indomethacin.
The covalent binding of tritiated benzo(a)pyrene (BP) to DNA has been determined in rat liver in vivo, in rat liver perfused in situ, after incubation of BP with liver single cells, with liver homogenate, with liver microsomes and DNA, with fibroblasts from a rat granulorna pouch, and with · 2 cell lines. Li ver single cells were found to be a valuable compromise between the rnost sensitive system (microsomal incubation of BP with DNA) and the biologically most relevant system (in vivo ).
No abstract available
Die Darstellung der Verbindungen 3a (sowie 3b) und 10, die sich vom 1-(4-Chlorphenyl)-1-(2~ diethylaminoethoxy)silacyclohexan (Sila-Chlorphencyclan, II a) ableiten, wird beschrieben. Die Verbindung 3 b wurde pharmakologisch und toxikologisch untersucht. Die biologischen Eigen· schaften von 3b wurden mit denen von Ila (sowie Chlorphencyclan) und seinem Hydrochiarid Ilb verglichen.
No abstract available