Steroid Hormones in Seminal Plasma: the Relationship with Sperm Quality.

The purpose of this study was to find out whether the seminal testosterone and/or estradiol levels could serve as prognostic criteria for normal spermatogenesis and whether they are able to characterize the sperm pathology. The study involved healthy young male volunteers (n=269); serum and seminal steroid hormones were measured; the sperm concentration, mobility, and morphology were evaluated. The results indicate that the seminal testosterone concentration is lower (p<0.05) and the seminal estradiol is higher than the corresponding parameters in the serum (p<0.05). The seminal testosterone and estradiol concentrations negatively correlated with the sperm concentration, and the seminal estradiol concentration was higher in pathozoospermic than in normospermic men (p<0.05). It is assumed that the seminal estradiol level can be an indicator of sperm quality and serve as a biological predictor of normal spermatogenesis; in addition, this parameter can be used for diagnostic purposes in patients with impaired spermatogenesis induced by excess of estrogens.