Browsing Center for Research in Reproduction and Contraception by Subject "LH"
Now showing items 1-6 of 6
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The direct pituitary effect of testosterone to inhibit gonadotropin secretion in men is partially mediated by aromatization to estradiol
(American Society of Andrology, 1994-01)In men, administration of exogenous testosterone (T) exerts direct negative feedback effects at the pituitary as well as at the hypothalamic level. This study was undertaken to determine whether T itself ... -
Effects of castration and recombinant human inhibin administration on circulating levels of inhibin and gonadotropins in adult male monkeys
(American Society of Andrology, 1994-03)Inhibin has been suggested to play a role in gonadal feedback regulation of follicle-stimulating hormone (FSH) secretion; however, neither the half-life nor the time course of action of recombinant inhibin ... -
A pharmacokinetic study of injectable testosterone undecanoate in hypogonadal men
(American Society of Andrology, 1998-11)Testosterone undecanoate (TU) provides testosterone (T) replacement for hypogonadal men when administered orally but requires multiple doses per day and produces widely variable serum T levels. We investigated ... -
The physiological significance of pulsatile LHRH secretion in man: gonadotrophin responses to physiological doses of pulsatile versus continuous LHRH administration
(Blackwell Publishing, 1991-02)This study tested whether pulsatile LHRH stimulation of the pituitary is required for normal gonadotrophin secretion in man. Four men with idiopathic hypogonadotrophic hypogonadism (IHH) and presumed endogenous ... -
Quantitative and qualitative changes in serum luteinizing hormone after injectable testosterone undecanoate treatment in hypogonadal men
(Blackwell Publishing, 2000-03)AIM: To clarify the immuno-active LH (i-LH) and bioactive LH (b-LH) responses and qualitative changes in the circulating LH to testosterone undecanoate (TU) injection. METHODS: Eight men with Klinefelter's ... -
Regulation of testicular function in men: implications for male hormonal contraceptive development
(Elsevier, 2003-06)In the adult male, the testes produce both sperm and testosterone. The function of the testicles is directed by the central nervous system and pituitary gland. Precise regulation of testicular function is ...