Loading...
  • activity
  • Rauschenbach, I. 2007-07-23 00:00:00 The effect of various duration of heat stress (38°C) on the activity of ecdysone 20-monooxygenase converting ecdysone into 20-hydroxyecdysone has been studied in D. virilis of wild type and mutant strain females, which differ by the mode of heat stress response of ecdysone and 20-hydroxyecdysone. (deepdyve.com)
  • genes
  • The induction of puffs has been visualized as primary action of the hormone, indicating that ecdysone controls the activity of specific genes. (thefreedictionary.com)
  • In addition, we find that dib mutant embryos have very low titers of ecdysone and 20-hydroxyecdysone (20E) and fail to express IMP-E1 and L1, two 20E-inducible genes, in certain tissues of the embryo. (biologists.org)
  • The early genes are a key group of ecdysone targets that function at the top of the signaling hierarchy. (oup.com)
  • In the presence of ecdysone, early genes exhibit a highly characteristic rapid and powerful induction that represents a primary response. (oup.com)
  • While the general mechanism of ecdysone-dependent transcription is well characterized, it is not known whether a distinct mechanism governs the hormonal response of early genes. (oup.com)
  • Our findings suggest that higher order chromatin structure may serve as an important mechanism underlying the distinct response of early genes to ecdysone. (oup.com)
  • Molecule
  • The dissipation half-life values of ecdysone after irradiation under ultraviolet light and the larvicidal activity suggested that the addition of lignin (in 1:l mol ratio) can provide better photostabilization of ecdysone molecule. (scientific.net)
  • COMPOUND
  • The compound could be hydrolysed with a crude hydrolase preparation from Helix pomatia, yielding ecdysone. (biochemj.org)
  • The resulting compound was purified by h.p.l.c. and identified as ecdysone 25-O-beta-D-glucopyranoside by n.m.r. spectroscopy and by fast atom bombardment mass spectrometry of the conjugate and of the sugar released by enzymic hydrolysis. (biochemj.org)
  • 1989
  • The important developments and achievements in modern ecdysone science since the first edition in 1989 by J. Koolman have led to this new revised, expanded and retitled reference work. (moluna.de)
  • vitro
  • A major metabolite of [3H]ecdysone injected into adults of the nematode Parascaris equorum maintained in vitro for 48 h was secreted into the culture medium. (biochemj.org)
  • characteristic
  • Four structural features are characteristic of most ecdysones: the cis linkage of rings A and B , the cis -glycol group in ring A , the α-and β-unsaturated ketone groups in ring B , and at least one hydroxyl group (usually two or three) in the sterol side chain. (thefreedictionary.com)
  • metabolic
  • Acid exposure produced a purely metabolic acidosis that was partially corrected by a respiratory alkalosis between 48 and 72 h and was accompanied by an increase in circulating ecdysone. (brillonline.com)
  • early
  • In order to compare ecdysone metabolism between diapause eggs and non-diapause eggs of the silkworm, Bombyx mori, ^3H-ecdysone and its derivatives (^3H-3-epiecdysone and ^3H-ecdysone 22-phosphate) were injected into the eggs at various stages during early embryogenesis, and the resultant labelled metabolites were analyzed by high-performance liquid chromatography. (naver.com)
  • group
  • Written by a distinguished international group of contributors, this is a comprehensive reference on ecdysone. (moluna.de)
  • presence
  • This study examined the photostabilization of ecdysone when exposed to ultraviolet light in the presence of some ultraviolet protectants. (scientific.net)
  • among
  • It indicated that the addition of congo red, yeast, starch and arabia gum provided moderate degree of photostabilization of ecdysone and that addition of lignin provided the best photostabilization of ecdysone, among these UV protectants studied. (scientific.net)
  • value
  • Toxicity of the ecdysone with UV protectants was higher to the larvae of M. dermestoides Chevrolat compared to the ecdysone alone as indicated by the lower EC 50 value. (scientific.net)
  • order
  • Using first-order kinetic equation, the dissipation half-life values (DT 50 ) for the degradation of ecdysone under ultraviolet radiation were obtained. (scientific.net)