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Satoru Takahashi
Researcher at Asahikawa Medical University
Publications - 10
Citations - 65
Satoru Takahashi is an academic researcher from Asahikawa Medical University. The author has contributed to research in topics: Testosterone & Medicine. The author has an hindex of 4, co-authored 6 publications receiving 26 citations.
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Journal ArticleDOI
Diethylstilbestrol administration inhibits theca cell androgen and granulosa cell estrogen production in immature rat ovary.
Yoshitaka Imamichi,Toshio Sekiguchi,Takeshi Kitano,Takashi Kajitani,Reiko Okada,Yoshihiko Inaoka,Kaoru Miyamoto,Junsuke Uwada,Satoru Takahashi,Takahiro Nemoto,Asuka Mano,Rafiqul Islam Khan,Rafiqul Islam Khan,Tariqul Islam,Koh-ichi Yuhki,Hitoshi Kashiwagi,Fumitaka Ushikubi,Nobuo Suzuki,Takanobu Taniguchi,Takashi Yazawa +19 more
TL;DR: Results indicate that DES inhibits thecal androgen production via suppression of pituitary LH secretion and ovarian Cyp17a1 expression, and represses Cyp19a1expression by inducing iNOS gene expression for continuous inhibition of estrogen production in granulosa cells.
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Evaluation of 17β-hydroxysteroid dehydrogenase activity using androgen receptor-mediated transactivation.
Takashi Yazawa,Yoshitaka Imamichi,Junsuke Uwada,Toshio Sekiguchi,Daisuke Mikami,Takeshi Kitano,Takanori Ida,Takahiro Sato,Takahiro Nemoto,Sayaka Nagata,Md. Rafiqul Islam Khan,Md. Rafiqul Islam Khan,Satoru Takahashi,Fumitaka Ushikubi,Nobuo Suzuki,Akihiro Umezawa,Takanobu Taniguchi +16 more
TL;DR: A method that easily evaluates enzymatic activity of 17β-HSD3 by quantifying the conversion from A4 to T using androgen receptor (AR)-mediated transactivation is adapted and applicable to detect the conversion of 11-ketoandrostenedione to 11- ketotestosterone by HSD17B3.
Journal ArticleDOI
11-Ketotestosterone is a Major Androgen Produced in Porcine Adrenal Glands and Testes.
Takashi Yazawa,Takahiro Sato,Takahiro Nemoto,Sayaka Nagata,Yoshitaka Imamichi,Takeshi Kitano,Toshio Sekiguchi,Junsuke Uwada,Mohammad Sayful Islam,Daisuke Mikami,Ikuyo Nakajima,Satoru Takahashi,Rafiqul Islam Khan,Nobuo Suzuki,Akihiro Umezawa,Takanori Ida +15 more
TL;DR: In this paper, an adenovirus-mediated introduction of steroidogenic factor-1 (SF-1)/adrenal 4-binding protein (Ad4BP) induced the differentiation of porcine subcutaneous preadipocytes (PSPA cells) into sex steroid-producing cells.
Journal ArticleDOI
Cyclooxygenase-2 is acutely induced by CCAAT/enhancer-binding protein β to produce prostaglandin E 2 and F 2α following gonadotropin stimulation in Leydig cells.
Takashi Yazawa,Yoshitaka Imamichi,Koh-ichi Yuhki,Junsuke Uwada,Daisuke Mikami,Masayuki Shimada,Kaoru Miyamoto,Takeshi Kitano,Satoru Takahashi,Toshio Sekiguchi,Nobuo Suzuki,Rafiqul Islam Khan,Rafiqul Islam Khan,Fumitaka Ushikubi,Akihiro Umezawa,Takanobu Taniguchi +15 more
TL;DR: Results indicate that COX‐2 is induced in Leydig cells by activation of C/EBPβ via reduction of CHOP expression upon gonadotropin‐stimulation to produce PGF 2α and PGE 2.
Journal ArticleDOI
Profiles of 5α-Reduced Androgens in Humans and Eels: 5α-Dihydrotestosterone and 11-Ketodihydrotestosterone Are Active Androgens Produced in Eel Gonads.
Takashi Yazawa,Hiroyuki Inaba,Yoshitaka Imamichi,Toshio Sekiguchi,Junsuke Uwada,Mohammad Sayful Islam,Makoto Orisaka,Daisuke Mikami,Takanori Ida,Takahiro Sato,Yoshimichi Miyashiro,Satoru Takahashi,Md. Rafiqul Islam Khan,Md. Rafiqul Islam Khan,Nobuo Suzuki,Akihiro Umezawa,Takeshi Kitano +16 more
TL;DR: In this article, the presence and production of DHT and 11KDHT in Japanese eels and humans were compared, and the results indicated that in teleosts, DHT may be important 5α-reduced androgens produced in the gonads.