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31.
S. Suzuki Y. Endo R. Miura R. Iizuka 《Cellular and molecular life sciences : CMLS》1984,40(11):1214-1217
Summary The effects of the inhibition of steroidogenesis by trilostane on oocyte maturation were examined by studying spontaneous maturation and fertilization in vitro. 10–6 M trilostane had no influence on the meiotic process, whether the oocytes were naked or not. At a concentration of 10–6 M and 10–7 M trilostane, low normal pronuclear formation and high polyspermy were found during in vitro fertilization. However, no retarded male pronuclear development could be detected in the trilostane-treated group. Thus, steroid producing activity within ova is apparently necessary to prevent multiple sperm penetration, but it has no effect on meiosis or the action of the so-called male pronucleus growth factor (MPGF). 相似文献
32.
High level radioactive nuclides in Japan in May 总被引:1,自引:0,他引:1
33.
34.
Summary It was found that ouabain (10–5
M) was effective in releasing the extraneuronal catecholamine which was taken up by uptake2 process in the guinea-pig vas deferens. This result shows that a Na–K ATPase is essential for the storage of catecholamine in the extraneuronal site. 相似文献
35.
Lipid peroxide content in hepatocytes isolated from ketotic diabetic rats was higher than normal, and the release of peroxide into the media was also elevated for the initial 18 h. Insulin suppressed both peroxide release and synthesis by cultured hepatocytes isolated from normal and from diabetic rats. 相似文献
36.
N Fusetani D Ejima S Matsunaga K Hashimoto K Itagaki Y Akagi N Taga K Suzuki 《Experientia》1987,43(4):464-465
Gram-positive bacteria isolated from deep-sea sediments of the Pacific basin showed considerable antibacterial activity. A Bacillus strain, isolated from a sediment sample collected at a depth of 4310 m, was shown to produce 3-amino-3-deoxy-D-glucose, a known antibiotic. 相似文献
37.
38.
Summary Ovaries of the sea urchinHemicentrotus pulcherrimus were extracted with 70% ethanol. The extracts were polarographically assayed for respiration-stimulating activity toward homologous spermatozoa. The data of the bioassay and light microscopic observation on thin sections of the ovaries showed detectable activity only in mature ovaries.We thank the Misaki Marine Biological Station for kindly supplying us with specimens. This work was supported in part by a grant from the Ministry of Education, Science and Culture of Japan. 相似文献
39.
Variability of DNA content of murine fibrosarcoma cells 总被引:1,自引:0,他引:1
40.
Summary Hydroxy amino acids are synthesized from unsaturated aliphatic carboxylic acid using aqueous ammonia under conditions of contact glow discharge electrolysis.This work was supported partly by a grant from the Ministry of Education. 相似文献