Abstract
Venous insufficiency of the corpora cavernosa is the second most common cause of erectile dysfunction (ED). A functional insufficiency of the venous system has been hypothesised, but the cause is still unclear. To evaluate a possible endocrine mechanism, we have studied hormone profile in a group of nine patients with pure venous-leakage (VL) compared with a control group of 15 patients with ED of different origin. Prolactin, testosterone and gonadotropin levels did not differ among the two groups, while estradiol (E2) plasma concentration was significantly higher in VL patients compared to controls. Our data support the hypothesis that the steroid environment, in particular estradiol level, can influence venous vascular tone (via VEGF or NO), thus affecting venous leakage dysfunction. This point can explain a possible link between the high estradiol levels and a functional insufficiency of the venous system in ED.
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