“ PMF caused relaxation of phenylephrine precontracted human cavernosal …, and this effect was slightly inhibited by N(G)-nitro-l-arginine , a nitric oxide synthase inhibitor, but not by ODQ (soluble guanylate cyclase inhibitor), TEA (tetraethylammonium, blocker of voltage-dependent K(+) channels) or glybenclamide (blocker of ATP-dependent K(+) channels).”