background ghrelin plays an important role in the regulation of food intake and body weight. it also decreases testosterone and opioid secretion. objectives the goal of the present study was to investigate the effect of testosterone, morphine or simultaneous injection of testosterone and morphine on mean serum ghrelin concentration in sheep. conclusions there is a direct correlation between foo...

the classical etiology of erectile dysfunction (ed) comprises aging and vascular, neurogenic, psychological and hormonal components. recent studies have shown that ed can be the forerunner of serious cardiovascular disturbances. it has also been reported that peripheral neuropathy and microvascular injuries caused by pathophysiological changes in patients with diabetes and obesity lead to ed in...

BACKGROUND Analog-based free testosterone test results, sex hormone binding globulin (SHBG) concentrations, and total testosterone concentrations are somehow related. This study used new experiments to clarify these relationships. METHODS An analog-based free testosterone immunoassay and a total testosterone immunoassay were applied to well-defined fractions of serum testosterone. First, they...

atavistic residues of aggressive behavior prevailing in animal life, determined by testosterone, remain attenuated in man and suppressed through familial and social inhibitions. however, it still manifests itself in various intensities and forms from; thoughts, anger, verbal aggressiveness, competition, dominance behavior, to physical violence. testosterone plays a significant role in the arous...

Background: Varicocele suggests that in addition to effects on spermatogenesis, varicocele also impairs testicular Leydig cell function with a consequential decrease in testosterone production; correction of the varicocele may result in improved serum testosterone levels. Materials and Methods: We measured preoperative serum testosterone levels in 40 infertile men with varicoceles varicocele (g...

objective: spinal cord injury (sci) causes infertility in male patients through erectile dysfunction, ejaculatory dysfunction, semen and hormone abnormalities. oxidative stress (os) is involved in poor semen quality and subsequent infertility in males with sci. the aim of this study is to examine the effects of sci on the level of testosterone hormone. materials and methods: in this experimenta...

This study aims to observe the effects of testosterone replacement therapy on glucose and lipid metabolism in middle-aged and elderly high-fat-fed male rats. This study established a high-fat-fed rat model and supplemented the rats with different doses of testosterone after castration. The rats were divided into control, complete lack of testosterone, low testosterone, medium testosterone, and ...

background: the secretion of thyroxin (t4) as the main hormone of thyroid gland is regulated by androgens. the present study aimed to evaluate the effect of testosterone and finasteride administration and castration on serum levels of t4 and to show the effect of this regulation on total body weight, weight of testis, and the weight of prostate. methods: male adult rats (n = 32) were divided in...