Shoichiro Murakawa
University of Tokyo
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Featured researches published by Shoichiro Murakawa.
Steroids | 1964
Hiroshi Ibayashi; Masami Nakamura; Shoichiro Murakawa; Toru Uchikawa; Tatsuo Tanioka; Kiku Nakao
Abstract A new method has been devised for the relatively rapid and sensitive determination of testosterone in human urine. One fourth of a 24 hour urine sample was incubated with β-glucuronidase after addition of a tracer dose of 1,2–3H-testosterone for the calculation of recovery and extracted with ethyl ether. The crude extract was subjected to thin-layer chromatography (TLC), eluted, acetylated, subjected to TLC again and analyzed by gas chromatography. This method detected as little as 5 μg of testosterone per 24 hour and the rate of recovery was 54.8±0.4% (Mean±S.E.). The value for normal adult men ranged from 41 to 200 μg/day, showing definite decline with advancing age. While the urinary testosterone exhibits a very low level (5>-8 μg/day) in normal adult women, hirsute women excreted almost as much testosterone as normal adult men.
The Journal of Clinical Endocrinology and Metabolism | 1969
Tohru Yamaji; Kenji Motohashi; Shoichiro Murakawa; Hiroshi Ibayashi
Endocrinology | 1965
Hiroshi Ibayashi; Masami Nakamura; Tohru Uchikawa; Shoichiro Murakawa; Sho Yoshida; Kiku Nakao; Shigeo Okinaka
Endocrinology | 1966
Sho Yoshida; Hiroshi Ibayashi; Shoichiro Murakawa; Kiku Nakao
The Journal of Clinical Endocrinology and Metabolism | 1969
Constantin Esanu; Shoichiro Murakawa; George A. Bray; M. S. Raben
Endocrinology | 1965
Sho Yoshida; Hiroshi Ibayashi; Shoichiro Murakawa; Kiku Nakao
The Journal of Clinical Endocrinology and Metabolism | 1962
Shigeo Okinaka; Nakaaki Ohsawa; Kazuo Shizume; Kenji Motohashi; Takuo Fujita; Shoichiro Murakawa; Fukashi Matsuzaki; Hirotoshi Morii; Toru Uchikawa
Endocrinology | 1963
Hiroshi Ibayashi; Toru Uchikawa; Kenji Motohashi; Takuo Fujita; Sho Yoshida; Nakaaki Ohsawa; Shoichiro Murakawa; Masami Nakamura; Shigeo Okinaka
The Journal of Clinical Endocrinology and Metabolism | 1961
Hiroshi Ibayashi; Takuo Fujita; Kenji Motohashi; Sho Yoshida; Nakaaki Ohsawa; Shoichiro Murakawa; Tatsuhiko Yokota; Shigeo Okinaka
Steroid Dynamics#R##N#Proceedings of the Symposium on the Dynamics of Steroid Hormones Held in Tokyo, May, 1965 | 1966
Hiroshi Ibayashi; Masami Nakamura; Tohru Yamaji; Tatsuo Tanioka; Shoichiro Murakawa; Kenji Motohashi
