Results 161 to 170 of about 1,537 (197)
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Cockroach Leg Regeneration: Effects of Ecdysterone in vitro
Science, 1970Regenerating epithelial tissue from the cockroach leg forms two cuticular coverings. The first of these consists of a protein-carbohydrate complex that is replaced before molting. The second covering represents the cuticle containing chitin. The deposition of the cuticle can be induced in vitro by adding ecdysterone to the culture medium.
E P, Marks, R A, Leopold
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Heterophylic action of ecdysterone
Naturwissenschaften, 1980~o ~a ,~ so 6o 2~ ~o ~o 5o 6o 2o ao ,~ so 6o ~o 3o ~o ~o ~ port to the synchronous variations under- gone by the two cyclic nucleotides in bio- logical systems (7). Moreover, the varia- tions in protein kinase activity during the same experiment lend further support to the idea stated above: the similar trends in the variation of the kinase and cAMP ...
R E, Catalán +2 more
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Effects of ecdysterone in polytene chromosomes of Trichosia pubescens
Developmental Biology, 1984Injection of ecdysterone into mid-fourth instar larvae of Trichosia pubescens brought about drastic changes in the puffing pattern of the chromosomes of the salivary gland. The puff sequence induced by the hormone is quite similar to that which normally occurs at the end of larval life.
D C, Amabis, J M, Amabis
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Lobster molting hormones: Isolation and biosynthesis of ecdysterone
Experientia, 1974L'ecdysterone, hormone de mue des insectes, a ete extraite de homards femelles (Homarus americanus) venant de muer. Sa concentration moyenne est de 6μg/kg de homard vivant. L'assimilation de cholesterol (4-14C) par les homards femelles avant la mue et la biosynthese d'ecdysterone a partir de ce precurseur est demontree.
R B, Gagosian +5 more
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[Immunomodulating effect of ecdysterones].
Ukrainskii biokhimicheskii zhurnal (1978), 1992Ecdysterone, its 20-desoxy-derivative alpha-ecdysone, their 2-desoxy-derivatives ecdysterone 2, 3, 22-triacetate and preparation BTI-4 have been studied for their effect on [3H]-thymidine incorporation in different populations of animal and human lymphocytes.
G N, Fomovskaia +2 more
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Acceleration by Ecdysterone of Premoult Substages in the Crayfish
Nature, 1973AN insect does not enter premoult if its thoracic glands have been removed, nor a crustacean if its y-organs have been removed, but once premoult is under way it continues whether or not the glands are present1,2. This suggests that the hormone secreted by these glands acts merely as a trigger to initiate premoult, and as the injection of ecdysone also
J. R. STEVENSON, J. A. TSCHANTZ
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Estimation of ecdysterone from sulfuric acid induced fluorescence
Steroids, 1972Abstract The sulfuric acid induction of ecdysterone (2 β ,3 β ,14 α ,20R,22R,25-hexahydroxy-5 β -cholest-7-en-6-one) fluorescence was examined under various conditions of acid concentrations, acid diluents, reaction duration and reaction temperature. With appropriate conditions ecdysterone standards could be estimated in amounts from ca.
M W, Gilgan, M E, Zinck
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Effect of Ecdysterone on Carbohydrate and Lipid Metabolism
1974In the preceding chapter, it was reported that ecdysterone and many other phyto-ecdysones show high protein-anabolic activity in murine liver. Since some of the steroids are effective in regulating carbohydrate and lipid metabolism in clinical and experimental applications, it became of interest to know whether ecdysterone also can influence ...
Mitsuru Uchiyama, Takemi Yoshida
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Pharmacokinetics of ecdysterone in experiments
Pharmaceutical Chemistry Journal, 1987M. Kh. Dzhukharova +5 more
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