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  • Title: Comparison between plasma concentrations of testosterone, nitric oxide and endothelin 1-2 in penile and brachial venous blood: preliminary results in men with psychogenic impotence.
    Author: Rossi P, Menchini Fabris F, Fiorini I, Palego P, Simi S, Rossi B, Sarteschi LM, Carpi A.
    Journal: Biomed Pharmacother; 1998; 52(7-8):308-10. PubMed ID: 9809174.
    Abstract:
    In the present study venous plasma concentrations of testosterone (T), nitric oxide (NO) and endothelin 1-2 (ET1-2) in the flaccid penis and brachial blood were measured in men with psychogenic impotence. T and NO were significantly lower in the penile venous blood, while ET1-2 showed no statistical difference. These data support the hypothesis of testosterone dependence of penile nitric oxide synthesis (NOS).
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