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- Title
Effects of two sex steroid hormones on early oogenesis in Japanese huchen (Hucho perryi).
- Authors
Higashino, T.; Miura, T.; Miura, C.; Yamauchi, K.
- Abstract
The present study was carried out to investigate whether several sex steroid hormones are able to induce oogonial proliferation or initiation of meiotic division Iin vitro. The results showed that 17ß-estradiol (E2) and 17a, 20ß-dihydroxy-4-pregnen-3-one (17a, 20ß-DHP) were able to induce the DNA synthesis of ovarian germ cells. The percentage of oocytes in 17a, 20ß-DHP treated fragments was significantly higher than that in the other treatments. From these results, we conclude that endogenous E2 and 17a, 20ß-DHP synthesized in ovary play significant roles in the proliferation of oogonia and the initiation of meiotic division I in early oogenesis, respectively.
- Subjects
HUCHO; OOGENESIS; SEX hormones; STEROIDS; FISH reproduction endocrinology; GAMETOGENESIS; REPRODUCTION endocrinology
- Publication
Fish Physiology & Biochemistry, 2003, Vol 28, Issue 1-4, p343
- ISSN
0920-1742
- Publication type
Article
- DOI
10.1023/B:FISH.0000030580.95994.77