1. Le pénis : un laboratoire vasculaire unique Ronald Virag Centre d’Exploration et Traitement de l’Impuissance 8 rue de Duras 75008 Paris www.medisexe.com 62°Congrès de la SFA 9-10 Javier 2008
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4. Le pénis: un laboratoire vasculaire unique Un peu d’histoire 3
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7. L’Erection sur le plan moléculaire nNO into SMCs Activation of guanylate cyclase increase level of cGMP Reduction of intracellular Ca 2 Inactivation of the SM fibers contractile mechanisms eNO prostaglandins endothelial hyperpolarizing factors in ECs NO-cGMP route Cavernosal Parasympathetic Nerves vasorelaxation and vasodilation regulation of venous and arterial tone prostaglandins I and E receptors + adenylate cyclase increase level of cAMP K+ (K-ATP) SMC relaxation arterial inflow PGI2-cAMP route Vipergic nerves