AB25. What would YES (Morning Erection/Sleep-related Erection) be without NO (Nitric Oxide) induced by Teststerone?

Abstract

As you know, for penile erection, a sufficient amount of testosterone-induced nitric oxide is needed in the smooth muscle of the penile arterial wall. With aging, LOH syndrome and so on, the serum testosterone level decreases, resulting in a decline of penile erectile function. Furthermore, it is known that the enzyme PDE5 in the penile artery wall also… (More)

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