Gynecologic and Obstetric Investigation
Original Paper
Sex Difference in the Human Peripheral Plasma Beta-Endorphin and Beta-Lipotropin LevelsFuruhashi N. · Takahashi T. · Kono H. · Shinkawa O. · Fukaya T. · Suzuki M.Department of Obstetrics and Gynecology, Tohoku University School of Medicine, Sendai, Japan
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Article / Publication Details
Received: April 26, 1983
Accepted: August 05, 1983
Published online: March 16, 2010
Issue release date: 1984
Number of Print Pages: 4
Number of Figures: 0
Number of Tables: 0
ISSN: 0378-7346 (Print)
eISSN: 1423-002X (Online)
For additional information: https://www.karger.com/GOI
Abstract
Human plasma Β-endorphin (Β-EP) and Β-lipotropin (Β-LPH) were measured simultaneously by radioimmunoassay in 4 women with regular menstrual cycle (4 follicular phase and 4 luteal phase), 5 normal men and 10 term fetuses. Mean plasma Β-EP level in the totalsamplesof 8 women was 30.7 ± 5.8 pg/ml( ± SE), significantly (p < 0.03) higher than the Β-EP level in men (12.2 ± 2.0 pg/ml). There was no significant sex difference in fetal plasma Β-EP level. These data suggest that the existence of sex differences for Β-EP secretion and release, and opioid peptides secretion and release mechanism might change with sexual maturation, due to changing sex steroids secretion.
© 1984 S. Karger AG, Basel
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Article / Publication Details
Received: April 26, 1983
Accepted: August 05, 1983
Published online: March 16, 2010
Issue release date: 1984
Number of Print Pages: 4
Number of Figures: 0
Number of Tables: 0
ISSN: 0378-7346 (Print)
eISSN: 1423-002X (Online)
For additional information: https://www.karger.com/GOI
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