S
Shinji Adachi
Researcher at National Institute for Basic Biology, Japan
Publications - 20
Citations - 1423
Shinji Adachi is an academic researcher from National Institute for Basic Biology, Japan. The author has contributed to research in topics: Ovarian follicle & Gonadotropin. The author has an hindex of 17, co-authored 20 publications receiving 1386 citations.
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Journal ArticleDOI
Identification of maturation-inducing steroid in a teleost, the amago salmon (Oncorhynchus rhodurus)☆
Yoshitaka Nagahama,Shinji Adachi +1 more
TL;DR: In this paper, the maturation-inducing activity of residues at various steps of purification was assessed by an in vitro germinal vesicle breakdown (GVBD) assay based on fully grown prophase-arrested folliculated oocytes of amago salmon.
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Estradiol-17β production in amago salmon (Oncorhynchus rhodurus) ovarian follicles: Role of the thecal and granulosa cells
TL;DR: A two-cell-type model for the production of follicular estrogens, the thecal layer possibly contributing to estradiol-17β production by synthesizing androgens which are transferred to the granulosa layer and aromatized to est radiol- 17β is suggested.
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Relative in vitro effectiveness of 17α,20β-dihydroxy-4-pregnen-3-one and other pregnene derivatives on germinal vesicle breakdown in oocytes of ayu (Plecoglossus altivelis), amago salmon (Oncorhynchus rhodurus), rainbow trout (Salmo gairdneri), and goldfish (Carassius autatus)
TL;DR: Results suggest that 17 alpha, 20 beta-diOHprog is the natural maturation-inducing steroid hormone common to three species of Salmoniformes, ayu, amago salmon, and rainbow trout, since supportive physiological and biochemical data are lacking.
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Diurnal rhythm of oocyte development and plasma steroid hormone levels in the female red sea bream, Pagrus major, during the spawning season
TL;DR: Diurnal maturation rhythm in the female red sea bream, Pagrus major, which spawns every day during the spawning season and has an asynchronous-type ovary containing oocytes at various stages of development, was studied by histological investigation of the ovary.
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Rainbow trout cytochrome P-450c17 (17α-hydroxylase/17,20-lyase) cDNA cloning, enzymatic properties and temporal pattern of ovarian P-450c17 mRNA expression during oogenesis
TL;DR: A cDNA clone encoding cytochrome P‐450c17 (17α‐hydroxylase/17,20‐lyase) was isolated from a rainbow trout ovarian follicle cDNA library and shows a much greater homology with chicken P‐ 450c17 than with that of human, bovine and rat.