Our findings indicate that aging decreases penile NOS expression, neurogenic and endothelium-dependent relaxations of CC, and also suppresses serum testosterone levels by inducing inflammatory response that may contribute to the development of ED.
CONCLUSIONS The findings indicate a decreased risk of ED in patients with CP who are carriers of miR-146a rs2910164 C allele, and this association might be due to its ability to compromise the expression of miR-146a, and thereby increase the expression of its target gene, NOS1.
Combined therapeutic effect of udenafil and adipose-derived stem cell (ADSC)brain-derived neurotrophic factor (BDNF)-membrane system in a rat model of cavernous nerve injury.
Based on animal and cell studies, neurogenic ED is assumed to be caused mainly by: (a) an insufficient synthesis of nitric oxide (NO) due to a decrease in the levels of the penile neuronal nitric oxide synthase (PnNOS) or the impairment of its regulation by protein effectors (NMDA receptor, protein inhibitor of nNOS: PIN), occurring in the neuronal bodies or nerve terminals, or (b) a loss of the cells themselves by apoptosis caused by the induction of inducible NOS (iNOS) and the production of peroxynitrite.