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841.
842.
Summary Female rats fed 0, 25, 2500 and 10,000 IU vitamin E/kg diet for 3 months were examined for reproductive performance. On 10,000 IU vitamin E/kg diet, the fertility of inseminated rats was significantly reduced as compared to rats given normal or nutritional levels of vitamin E.This work was supported by research grants from the National Research Council of Canada and the Research Committee of The University of British Columbia. We thank Mrs Virginia Green for her help in statistical analysis. Reprint requests should be addressed to Dr I. D. Desai, Professor of Nutrition. 相似文献
843.
N. O. Sjöstrand 《Cellular and molecular life sciences : CMLS》1965,21(2):96-96
Zusammenfassung Der Noradrenalingehalt des Samenleitergewebes von Hahn und Schildkröte ist gleich hoch wie bei Säugetieren. 相似文献
844.
A Guélin I E Michoustina S A Goulevskaya N V Petchnikov L A Ledova 《Comptes rendus des séances de l'Académie des sciences. Série D, Sciences naturelles》1977,284(21):2171-2174
Marine microvibrios, predators of E. coli, have been detected worldwide, from equatorial waters to the polar regions. The morphology and behavior of two microvibrios have been studied. Their multiplication and aggressiveness in regard to their bacterial prevy are not impeded by dialysis membranes and manifest themselves, away from all direct contact between the predator and its prey. 相似文献
845.
J N Bidard L Cronenberger 《Comptes rendus des séances de l'Académie des sciences. Série D, Sciences naturelles》1977,284(5):389-392
A new method for the isolation and determination of 3-O-methyldopamine (3 MD) and 4-O-methyldopamine (4 MD) in the urine of Rat has been described. The administration of L-dopa enabled us to detect 4 MD in the urine with a molar ratio 4 MD/3 MD = 0.07. This ratio decreased with the simultaneous treatment of S-adenosylmethionine (SAM). This result might explain the therapeutic L-dopa+SAM in the treatment of parkinsonism, 4 MD being neurotoxic. The low level of 4 MD compared with the level of isovanillic acid, found by other authors, seems to indicate that the 4-O-methylation pathway takes place via dihydroxyphenylacetic acid. 相似文献
846.
M. Saragea T. Negru N. Rotaru A. Vladutiu 《Cellular and molecular life sciences : CMLS》1965,21(4):196-197
Résumé Chez 19 chiens présentant des symptomes de EAE, on a trouvé des anticorps sériques anticerveaux pendant divers laps de temps. 相似文献
847.
Differential effects of prostaglandins and isoproterenol on cAMP content and Na, K pump activity in rat submandibular acini 总被引:1,自引:0,他引:1
The beta-adrenergic agonist isoproterenol and prostaglandins E1 and E2 (but not F2 alpha) increased the cAMP content of rat submandibular acini in vitro, but only isoproterenol enhanced ouabain-sensitive 86Rb (K) uptake. These findings suggest that cAMP is not involved in the activation of the Na, K pump in salivary cells. 相似文献
848.
N. Thorball 《Cellular and molecular life sciences : CMLS》1982,38(7):876-878
Summary Fluorescein-coupled dextrans (FITC-Ds) were detected in sections in the electron microscope using 4 different contrasting methods when tissue was postfixed in osmium tetroxide. Endogeneous glycogen was also stained by the methods used, but FITC-D particles appeared smaller and more irregular, and in other locations. In dextranase treated specimens glycogen was still visible, while FITC-D was not.Acknowledgments. The author is grateful to Susan Max-Jacobsen, Kjeld Stub and Sonja Fich for excellent technical assistance. The author was supported by a research fellowship from the Danish Medical Research Council (12–1688). 相似文献
849.
N. Sasaki M. Matsuzaki T. Okabe Y. Imai Y. Kaneko F. Matsuzaki 《Cellular and molecular life sciences : CMLS》1983,39(3):330-331
Summary Both 12-O-tetradecanoyl-phorbol-1-acetate and teleocidin B stimulated the secretion of human chorionic gonadotropin by cultured choriocarcinoma cells. These tumor promoters also stimulated production of progesterone in the cells. However, the 2 tumor promoters did not exert a marked effect on the cellular binding of epidermal growth factor that also had a stimulatory effect on production of these hormones. 相似文献
850.
Comparative evaluation of 7 helminth antigens in the enzyme-linked immunosorbent assay (E.L.I.S.A.).
112 sera from Europeans with parasitologically proven helminthiasis were tested in the enzyme-linked immunosorbent assay (E.L.I.S.A.) against 6 crude extracts of various helminths (2 of adult worms: Dipetalonema viteae, Fasciola hepatica; 3 of eggs: Ascaris suum, Toxocara canis, Schistosoma mansoni; and of Echinococcus granulosus scolices) and against bovine hydatid fluid. Each serum was tested simultaneously at a fixed dilution of 1:160 against all antigens. Extensive cross-reactions were observed, leading to the conclusion that non-purified helminth antigens, even in combination, are of limited value for reliable serodiagnosis in E.L.I.S.A. 相似文献