Saturday, August 29, 2009

Erectile dysfunction and the physiology of erection

Impotence or erectile dysfunction is reported in CPPS, but information on prevalence is highly variable, although rates are higher than in controls, especially in young CPPS sufferers. It is most likely caused by underlying testosterone deficiency, diabetes and obesity and/or stress/fear induced reactions. See discussion on testosterone, nocturia and sleep for causes of testosterone deficiency in CPPS.

Erection is a complex "neurovascular" event "modulated by psychological and hormonal factors" leading to increased blood flow into and decreased flow out of the penis (so called tumescence). Murine (rats and mice) studies indicate that selenium, vitamin E and vitamin C insufficiency may be involved.(1)

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(1) Priviero FBM, Leite R, Webb RC, Teixeira CE. Neurphysiological basis of penile erection. Acta Pharmacol Sin 28(6):751-755, 2007 (this is a concise review).

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