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Browsing Center for Research in Reproduction and Contraception by Author "Bebb, Richard A."
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Combined administration of levonorgestrel and testosterone induces more rapid and effective suppression of spermatogenesis than testosterone alone: a promising male contraceptive approach
Paulsen, C. Alvin; Christensen, Richard B.; Matsumoto, Alvin M.; Bremner, William J.; Bebb, Richard A.; Anawalt, Bradley D. (Endocrine Society, 1996-02)Studies using high dose testosterone (T) administration in normal men as a male contraceptive have resulted in azoospermia rates of only 50-70%. Previous studies of T and progestogen combinations have shown ... -
A lower dosage levonorgestrel and testosterone combination effectively suppresses spermatogenesis and circulating gonadotropin levels with fewer metabolic effects than higher dosage combinations
Matsumoto, Alvin M.; Bremner, William J.; Anawalt, Bradley D.; Bebb, Richard A. (American Society of Andrology, 1999-05)Studies using exogenous high-dosage testosterone (T) or a combination regimen of physiologic T plus high-dosage levonorgestrel (LNG) administration in normal men have shown that oligoazoospermia (<3 ... -
Serum inhibin B levels reflect Sertoli cell function in normal men and men with testicular dysfunction
Groome, Nigel P.; Bremner, William J.; Matsumoto, Alvin M.; McNeilly, Alan S.; Illingworth, Peter J.; Anawalt, Bradley D.; Bebb, Richard A. (Endocrine Society, 1996-09)We used a recently developed ELISA format to test the hypothesis that inhibin B is the physiologically active form of inhibin in men. We measured and compared inhibin A, inhibin B, and pro-alpha-C-related ...