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W. Ruch A. L. Jaton B. Bucher P. Marbach W. Doepfner 《Cellular and molecular life sciences : CMLS》1976,32(4):529-531
Summary Intravenous injection of 0.1 mg/kg clonidine into rats under urethane anaesthesia induced a prompt and long-lasting release of growth hormone, estimated by radioimmunoassay (IRGH), which could be abolished by 0.2 mg/kg phentolamine given into the 3rd ventricle. Injection of 3 g/kg clonidine into the 3rd ventricle stimulated also the release of IRGH significantly. Intravenous administration of 0.32 mg/kg phenylephrine caused a small and transient release of IRGH only. These results provide evidence that central -adrenergic stimulation resulting in an increased GH secretion is one importantmechanism in the regulation of this hormone in the rat. 相似文献
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Summary 11-hydroxy-epiandrosterone was isolated and identified from urine of normal untreated female guinea pigs. After cold and hot acid hydrolysis of the urine, we found another 3-hydroxy-17-oxosteroid. Its character was investigated by several methods and we suppose this steroid is9(11)-epiandrosterone, an artificial product of 11-hydroxy-epiandrosterone. 相似文献
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This study was done to delineate the role of alpha- and beta-adrenergic receptors and cyclic AMP in the mechanism of ethanol effects on insulin release from isolated islets. Rats were given an alpha-adrenergic blocker, phentolamine, or a beta-adrenergic blocker, propranolol. In addition, ethanol 1 g/kg was given intragastrically 1 h prior to sacrifice. Glucose mediated insulin release from isolated islets was enhanced by phentolamine and decreased by propranolol. Ethanol treatment inhibited glucose-induced insulin release from isolated islets of control rats as well as those given phentolamine and/or propranolol. Insulin release from isolated islets in response to dibutyryl-cyclic AMP was attenuated by ethanol. Theophylline enhanced glucose mediated insulin release from control islets but ethanol treatment produced a significant inhibition of insulin response. The data suggest that the site of action of the deleterious effects of ethanol on insulin release from isolated islets in rat does not involve adrenergic system and cyclic AMP. 相似文献
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Brigitte Ziegler M. Ziegler H. Fiedler 《Cellular and molecular life sciences : CMLS》1978,34(1):138-139
Summary 7-day-cultured islets from pregnant Wistar rats released at 5.6 mM glucose significantly more insulin than islets from nonpregnant rats, whereas in vivo this heigthened glucose sensitivity is lost 48 h post partum.Investigations carried out as a part of the Forschungsprojekt Diabetes mellitus und Fettstoffwechselstörungen supported by the Ministry of Health of German Democratic Republic. 相似文献
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B. I. Tkachenko G. V. Chernjavskaja A. V. Samoilenko S. A. Polenov 《Cellular and molecular life sciences : CMLS》1970,26(9):973-974
Conclusion Changes of the vessel capacity resulted from the pressor synocarotid reflexes, intestinal chemoreflexes and reflexes from the right atrium or ventricle and electric stimulation of the somatic nerve afferents can be either similarly or differently directed as compared with the responses of the resistance vessels.
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S. I. Frankstein T. I. Sergeeva Z. N. Sergeeva E. S. Ivanova 《Cellular and molecular life sciences : CMLS》1975,31(3):314-315
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M. M. Shemyakin Yu. A. Ovchinnikov V. T. Ivanov I. D. Ryabova 《Cellular and molecular life sciences : CMLS》1967,23(5):326-326
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G. N. Telesnina M. A. Novikova G. L. Zhdanov M. N. Kolosov M. M. Shemyakin 《Cellular and molecular life sciences : CMLS》1967,23(6):427-428
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Laboratory of Biological Investigations.
Laboratory for Chemistry of Antibiotics. 相似文献
Laboratory of Biological Investigations.
Laboratory for Chemistry of Antibiotics. 相似文献
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G. S. Katrukha L. A. Baratova A. B. Silaev 《Cellular and molecular life sciences : CMLS》1968,24(6):540-541
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