Correspondence to: Du Geon Moon Department of Urology, Korea University Guro Hospital, 148 Gurodong-ro, Guro-gu, Seoul 08308, Korea. Tel: +82-2-2626-3201, Fax: +82-2-2626-1321, E-mail: [email protected] Copyright © 2015 Korean Society for Sexual Medicine and Andrology This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://c...

BACKGROUND AND PURPOSE In vitro evidence gathered from extracerebral conductance vessels suggests interaction between the endothelium-derived relaxing factor for acetylcholine (EDRFACh) and cyclic nucleotide action in vascular smooth muscle. The purpose of this study was to examine this interaction in vivo in pial arterioles. As had been done in vitro, we used phosphodiesterase inhibitors that ...