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Androgens in men--uses and abuses.
The female steroid hormones, estrogen and progesterone, are prescribed widely by physicians, and their risks and benefits have been studied extensively. Although androgen preparations have beenExpand
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Metabolic and behavioral effects of high-dose, exogenous testosterone in healthy men.
In addition to their use as replacement therapy for hypogonadal males, androgens, particularly testosterone (T), are being explored as potential hormonal male contraceptive agents, alone or inExpand
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Effects of endogenous testosterone and estradiol on sexual behavior in normal young men.
The importance of androgens in establishing and maintaining sexual function in males of most species is well recognized. Estrogens also stimulate male sexual function in some species. In men, mostExpand
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Testosterone-induced suppression of lipoprotein(a) in normal men; relation to basal lipoprotein(a) level.
The concentration of lipoprotein(a) [Lp(a)] in human plasma is largely genetically determined and is inversely correlated to the size of apolipoprotein(a) [apo(a)]. Additionally, Lp(a) values areExpand
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Physiologic testosterone levels in normal men suppress high-density lipoprotein cholesterol levels.
OBJECTIVE To investigate the role of physiologic levels of testosterone in the control of lipoproteins in healthy men. DESIGN A double-blind, randomized study. SETTING A university community. Expand
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The direct pituitary effect of testosterone to inhibit gonadotropin secretion in men is partially mediated by aromatization to estradiol.
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 TExpand
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Suppression of spermatogenesis in man induced by Nal-Glu gonadotropin releasing hormone antagonist and testosterone enanthate (TE) is maintained by TE alone.
GnRH antagonists plus testosterone (T) suppress LH and FSH levels and inhibit spermatogenesis to azoospermia or severe oligozoospermia. High-dose T treatment alone has been shown to be an effectiveExpand
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Issues in testosterone replacement in older men.
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Sperm counts and reproductive hormones in male marathoners and lean controls.
In women, chronic and intense endurance exercise is frequently associated with menstrual cycle alterations. In men, the effects of similar amounts of exercise are less well-studied. We tested theExpand
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Effects of endogenous testosterone and estradiol on sexual behavior in normal young men.
The importance of androgens in establishing and maintaining sexual function in males of most species is well recognized. Estrogens also stimulate male sexual function in some species. In men, mostExpand
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