𝔖 Bobbio Scriptorium
✦   LIBER   ✦

In vitro synthesis and secretion of ecdysteroids byDrosophila melanogaster ovaries

✍ Scribed by Rubenstein, Elaine C. ;Kelly, Thomas J. ;Schwartz, Margaret B. ;Woods, Charles W.

Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
307 KB
Volume
223
Category
Article
ISSN
0022-104X

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The ovaries of adult Drosophila melanogaster were shown to produce and secrete ecdysteroids in vitro by an ecdysteroid radioimmunoassay. The major secretory products were determined by HPLC/RIA analysis to be ecdysone, 20‐hydroxyecdysone, and a highly polar fraction. Based on competitive binding studies, the secreted ecdysteroids contain 2–3 times more 20‐hydroxyecdysone than ecdysone.

📜 SIMILAR VOLUMES

Endogenous ecdysteroid levels and rates
Endogenous ecdysteroid levels and rates of ecdysone acylation by intact ovaries in vitro in relation to ovarian development in adult female house crickets, Acheta domesticus
✍ Pensri Whiting; Stanley Sparks; Laurence Dinan 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 181 KB 👁 2 views

Ecdysteroid titres have been determined in adult female house crickets (Acheta domesticus) in relation to reproductive maturation. Ecdysteroid levels in newly emerged adult females are low except in the gut and carcass, which probably reflect the remnants of the preecdysial ecdysteroid peak. Ecdyste

Stimulatory effect of fractions of brain
Stimulatory effect of fractions of brain homogenate on protein synthesis in ovaries ofEisenia fetida Sav. In Vitro (Oligochaeta, Annelida)
✍ Lattaud, C. ;Marcel, R. 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 471 KB

## Abstract In __Eisenia fetida__, during the period of genital activity, the synthesis of androgen by testicular tissues is under the control of a neurohormone elaborated by cerebral ganglia (CG). These ganglia also have a trophic effect on ovarian protein synthesis. Present results confirm that i

Ecdysteroid-stimulated synthesis and sec
Ecdysteroid-stimulated synthesis and secretion of an N-acetyl-D-glucosamine-rich glycopeptide in a lepidopterna cell line derived from imaginal discs
✍ Patrick Porcheron; Madeleine Morinière; Noëlline Coudouel; Herbert Oberlander 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 853 KB

Hormone-regulated processing of N-acetyl-D-glucosamine was studied in an insect cell line derived from imaginal wing discs of the Indian meal moth, Plodia interpunctella (Hübner). The cell line, IAL-PID2, responded to treatment with 20-hydroxyecdysone with increased incorporation of GlcNAc into glyc