background: there are evidences regarding the prevalence of dysfunction in sexual function and behavior in diabetic people. experimental studies revealed a positive effect of withania somnifera on sexual function and behaviors. objective: in this research the effect of withania somnifera on sexual function in diabetic male wistar rats was assessed by measuring the serum levels of testosterone p...

In 1936, Eugen Steinach and colleagues published a work that brought steroid biochemistry to the study of sexual behavior and, using synthetic androgens and estrogens, foreshadowed by an astonishing 4 decades the discovery of the central role of estrogen in the sexual behavior of male rats. We offer an English translation of that paper, accompanied by historical commentary that presents Steinac...

A role for serotonin in male sexual preference was recently uncovered by our finding that male mutant mice lacking serotonin have lost sexual preference. Here we show that female mouse mutants lacking either central serotonergic neurons or serotonin prefer female over male genital odors when given a choice, and displayed increased female-female mounting when presented either with a choice of a ...

Focusing more closely on the question of climacteric symptoms and by listing these symptoms in an order of occur­ rence, one finds that nearly 90% of the effects of sexual hormones are of an extragenital nature and that, therefore, the use of the expression “sexual” to describe these hormones is too much of a restriction in terms of a functional analysis (fig 1). The term “extragenital target o...

Many people believe that sexual orientation (homosexuality vs. heterosexuality) is determined by education and social constraints. There are, however, a large number of studies indicating that prenatal factors have an important influence on this critical feature of human sexuality. Sexual orientation is a sexually differentiated trait (over 90% of men are attracted to women and vice versa). In ...

CONTEXT The effect of bariatric surgery on the reproductive function of obese men is not entirely elucidated. OBJECTIVE The aim of the study was to define the effect of Roux-En-Y gastric bypass surgery on the reproductive hormones and sexual function in obese men. DESIGN AND SETTING The cohort was followed for 2 yr at a clinical research center. PATIENTS Sixty-four severely obese men (22 ...

It is obvious that many birds exhibit sexual dimorphism of color. But the causal mechanisms resulting in sexual dichromatism have been well demonstrated for only a few species such as chickens and finches. Sex hormones control the plumage color and form in the brown leghorn (Greenwood and Blyth, 1938). Witschi (1935, 1937) and students have shown that within the weaver finches, three kinds of c...

Background: Usage of some atipycal antipsychotic drugs like sulpiride has severed effects on male fertility by impressions on sexual hormones secretion. These hormones regulate male germ cells proliferation and differentiation. In the present study we sought to elucidate the impact of sulpiride on serum prolactin and FSH concentration. Also effect of FSH on spermatogonium A/B (repopulation inde...