Effects of steroids on germinal vesicle breakdown in vitro of intact follicles in the japanese whiting, Sillago japonica, a marine teleost

Michiya Matsuyama, Yoshihide Hanaki, Shuhei Matsuura

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

1. 1. The effects of various steroids on germinal vesicle breakdown (GVBD) of follicle-enclosed oocytes of the Japanese whiting were examined by using an in vitro incubation technique. 2. 2. Of the stimulatory steroids, 17α,20β-dihydroxy-4-pregnen-3-one was the most effective, inducing 72% GVBD at concentrations as low as 0.1 ng/ml. The next most potent steroid was 20β-dihydroprogesterone, inducing 33% GVBD at concentrations of 0.1 ng/ml. 3. 3. The specificity for steroid-stimulated GVBD in Japanese whiting is consistent with several previous studies involving salmonids and various other teleosts, and suggests a possible physiological role for a 20β-dihydroprogestin in oocyte maturation of Japanese whiting.

Original languageEnglish
Pages (from-to)257-261
Number of pages5
JournalComparative Biochemistry and Physiology -- Part A: Physiology
Volume96
Issue number2
DOIs
Publication statusPublished - 1990

All Science Journal Classification (ASJC) codes

  • Physiology

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