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991.
M. Ch Michailov Frl A. Riotte Frl U. Welscher 《Cellular and molecular life sciences : CMLS》1969,25(6):621-622
Summary 2-mercaptoethylguanidin enhances the blood pressure responses to small doses of vasopressine in the rat. This potentiation is statistically significant. The increase of the vasopressine reaction after 2-mercaptoethylguanidin is not due to an indirect effect of vasopressine on the cardiovascular system.
Herrn Professor Z. M.Bacq danken wir für seine wertvollen Hinweise. 相似文献
Herrn Professor Z. M.Bacq danken wir für seine wertvollen Hinweise. 相似文献
992.
993.
994.
Mice can be protected against several species of lethal malaria infection by vaccination, and their recovery correlates well with increased anti-malarial antibody levels, particularly IgG (ref.2). However, there is also a good correlation between protection by vaccines and priming for delayed-type hypersensitivity in the skin, although there is no obvious explanation for this effect. We now report an apparent relationship between protection and a cell-mediated immune response involving the migration of various types of cell capable of killing malaria parasites in vitro to the liver. We suggest that the effect of vaccination is to bring together parasites, specific antibody and nonspecific cytotoxic cells, and that the liver may be a major site for their interaction. 相似文献
995.
U. Parenti M. L. Antoniotti C. Beccio 《Cellular and molecular life sciences : CMLS》1965,21(11):657-658
Riassunto Il rapporto sessi di una popolazione diEchinorhynchus truttae è risultato molto vicino ad 1:1 sia nel suo complesso che nei diversi gradi di infestazione. La femmina ha un corredo cromosomico 2n=8, il maschio 2n=7 e quindi un tipo di digametia XO. Questo reperto è messo in rapporto con esempi noti di rapporti sessi variabili in altri parassiti unisessuali. 相似文献
996.
Summary The morphology of ovarian follicles in the temperature-sensitive female-sterile mutantl(1)su(f)
mad-ts
has been studied by means of light and electron microscopy. As the follicle cells gradually degenerate at the restrictive temperature (29°C) the follicles become increasingly disorganized with respect to shape and polarity.Acknowledgments. This work was supported by the Deutsche Forschungsgemeinschaft (SFB 46). We wish to thank Mrs R. Koppa for excellent technical assistance and Mrs G. Mahlke for photographic work. We are also indebted to Dr D. Zissler, Dr E. Gateff and Prof. K. Sander for many helpful suggestions. 相似文献
997.
E. Flückiger U. Briner H. R. Bürki P. Marbach H. R. Wagner W. Doepfner 《Cellular and molecular life sciences : CMLS》1979,35(12):1677-1678
Summary Prolactin secretion inhibition and changes in striatal dopamine metabolism in rats were compared after the administration of 8a-amino-ergoline CH 29-717 and 2 derivates. CQ 32-084 was similar to but less potent than CH 29-717. while 32-085, the 1-methyl derivative, showed delayed dopaminomimetic effects. 相似文献
998.
999.
H. M. Rauen K. Norpoth W. Unterberg H. Haar 《Cellular and molecular life sciences : CMLS》1965,21(5):300-304
Summary Coplanar hetero-oligobases (phthalanilides), highly effective cytostatica.
Bacteriometrical and physico- chemical tests on coplanar hetero-oligobases have shown the formation of a complex with DNA
to be the cause of the cytostatic effect. For several of these compounds an evident correlation is demonstrated between bacteriostatic
efficiency and reaction with DNA.
Ausgeführt mit Unterstützung durch den Krebsforschungsfonds des Kultusministeriums Nordrhein-Westfalen. 相似文献
Ausgeführt mit Unterstützung durch den Krebsforschungsfonds des Kultusministeriums Nordrhein-Westfalen. 相似文献
1000.
Nerve growth factor (NGF) is a protein essential for the development and maintenance of the peripheral sympathetic nervous system, causing responsive neurones to increase in size and to extend neurites. Biochemically, the selective induction of tyrosine hydroxylase (TH) and dopamine beta-hydroxylase key enzymes in catecholamine biosynthesis is one of its most characteristic effects. Both the morphological and biochemical effects are modulated by glucocorticoids, suggesting a close relationship between specific effects of NGF and hormone action. NGF has been shown to induce an increase in adrenal cyclic AMP in intact but not in hypophysectomised rats, and so we have looked directly at the effect of systemic administration of NGF on the hypothalamo-pituitary-adrenal axis. We report here that NGF induced an enhanced secretion of adrenocorticotropin (ACTH) and a prolonged increase in plasma glucocorticoid concentration after intravenous (i.v.) injection. Such effects could have important implications for the biological activity of NGF. 相似文献