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.
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).
Rossi
P
P
Post-graduate School of Endocrinology, Metabolic Diseases and Andrology, University of Pisa, Italy.
Menchini Fabris
F
F
Fiorini
I
I
Palego
P
P
Simi
S
S
Rossi
B
B
Sarteschi
L M
LM
Carpi
A
A
D000328:Adult; D001158:Arteries; D016121:Brachiocephalic Veins; D019332:Endothelin-1 / Q000097:blood*; D019333:Endothelin-2 / Q000097:blood*; D007172:Erectile Dysfunction / Q000097:blood* / Q000523:psychology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009569:Nitric Oxide / Q000097:blood*; D010413:Penis / Q000098:blood supply*; D013739:Testosterone / Q000097:blood*
D019332:Endothelin-1; D019333:Endothelin-2; D009569:Nitric Oxide; D013739:Testosterone