Results 151 to 160 of about 2,081 (190)

SRP/dGATAb modulates the ecdysone response bidirectionally via locus-specific regulatory landscape. [PDF]

Epigenetics Chromatin
Evdokimova AA, Tarakanova AA, Erokhin M, Chetverina D, Sun MA, Vorobyeva NE.   +5 more
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Juvenile Hormone and Ecdysteroids Facilitate the Adult Reproduction Through the <i>Methoprene-Tolerant</i> Gene and <i>Ecdysone Receptor</i> Gene in the Female <i>Spodoptera frugiperda</i>. [PDF]

Int J Mol Sci
Zhang Y, Ding KT, Yang NW, Lv ZC, Wang ZY, Zhang YJ, Liu WX, Guo JY.   +7 more
europepmc   +1 more source

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Ecdysterone: Possible sources of origin in urine

Drug Testing and Analysis, 2022
AbstractEcdysterone (crustecdysone; beta‐ecdysone; 20‐hydroxyecdysone) is a naturally occurring steroid hormone belonging to the ecdysteroid class. The presented study investigated the possible concentration range of ecdysterone in urine after consumption of various preparations of spinach, drinking tea (made from Rhapoiticum Carthamoides) and topical ...
Dorota Kwiatkowska, Krzysztof Grucza, Katarzyna Chajewska, Patryk Konarski, Katarzyna Wojtkowiak, Aleksandra Drapała, Mariola Wicka   +6 more
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Isolation of ecdysterone

Chemistry of Natural Compounds, 1983
The kinetics of the extraction of ecdysterone from the roots with rhizomes ofRhaponticum carthamoides has been studied. The results of investigations on the selection of the optimum solvent for extracting ecdysterone from the raw material, for the process of sorption purification, and for the recrystallization of the ecdysterone are given.
A. U. Mamatkhanov, M. -R. I. Shamsutdinov, T. T. Shakirov   +2 more
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Ecdysterone induces acetylcholinesterase in mammalian brain

Comparative Biochemistry and Physiology Part C: Comparative Pharmacology, 1984
The effects of ecdysterone on brain acetylcholinesterase (AChE) in immature and adult rats of both sexes have been studied in in vitro conditions. Ecdysterone produced an increase of AChE in rat brain slices. The most remarkable effect was found in immature male rats. In vitro assay using a purified AChE from electric eel showed no effect. Pretreatment
R E, Catalan, M D, Aragones, J E, Godoy, A M, Martinez   +3 more
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Ecdysterone-induced protein synthesis in vitro

Journal of Insect Physiology, 1974
Abstract Ecdysterone added in vitro to wing tissue from diapausing Antheraea polyphemus pupae induced the synthesis of several epidermal cell proteins. This is one of few instances in which any steroid hormone in physiological concentrations has been able to induce specific protein synthesis in target tissue in vitro soon after hormone stimulation ...
M F, Ruh, T S, Ruh, W, DeWert, V, Duenas
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Ecdysterone, Ecdysterone Receptor, and Chromosome Puffs

1983
Steroid hormones modulate the rates of transcription of specific genes (Ashburner 1972b; Becker 1959; Becker 1962; Berendes 1967; Clever and Karlson 1960; Clever 1961; Zhimulev 1974). The paradigm of hormone action is that the hormone interacts with a specific cytoplasmic receptor.
B. Dworniczak, S. Kobus, K. Schaltmann-Eiteljor̈ge, O. Pongs   +3 more
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Ecdysterone biosynthesis in Podocarpus elata

Phytochemistry, 1968
Abstract The insect molting hormone ecdysterone was isolated in radioactive form after administration of cholesterol-4- 14 C to Podocarpus elata seedlings. Cholestenone-4- 14 C, however, was not significantly incorporated into ecdysterone by this plant. The biosynthetic implications of these results are discussed.
Horst H. Sauer, Raymond D. Bennett, Erich Heftmann   +2 more
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Effect of ecdysterone on glucose metabolism in vitro

Life Sciences, 2006
The aims of this study was to investigate whether ecdysterone is able to exert glucose-lowering effect on hepatocytes or stimulate the secretion of insulin. HepG2 cell line was used for glucose consumption (GC) studies. At moderate high glucose concentration (11.1 mmol/L), GC of HepG2 cells was increased by 44% to 77% with ecdysterone 1 x 10(-6) to 1 x
Qiu, Chen, Yongpeng, Xia, Zongyin, Qiu
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Cirriped vitellogenesis: Effect of ecdysterone in vitro

General and Comparative Endocrinology, 1977
Abstract Ovarioles of Balanus amphitrite and B. eburneus were cultured with ecdysterone in medium (10−4–1 μg/ml). Yolk droplets of mature oocytes showed increasing degeneration with increasing concentration of ecdysterone. Other ovarian cells, cement gland cells, and mantle parenchyma were not affected to any extent. Although preliminary, the results
U E, Fyhn, H J, Fyhn, J D, Costlow
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