title: [Molecular studies of vardenafil].
abstract: The remarkable therapeutic success of PDE5 inhibitors in the treatment of male erectile dysfunction has focused the attention of the researchers on better defining the properties of the individual inhibitors and PDE5 that contribute to the high affinity of these inhibitors for interaction with the PDE5 catalytic site. Recent molecular studies have demonstrated that vardenafil has high affinity for PDE5 and low dissociation rate from PDE5, which serves to explain why vardenafil works with low dosage, onsets quickly and has curative action in clinical practice. Moreover, the potency of vardenafil depends on its ring structure that resembles the purine moiety in cGMP.
authors.affiliation: Department of Urology, Third Affiliated Peoples Hospital, Peking University, Beijing 100083, China. jianghui@bjmu.edu.cn
authors.forename: Hui
authors.initials: H
authors.lastname: Jiang
mesh_terms: D004347:Drug Interactions; D007172:Erectile Dysfunction / Q000188:drug therapy; D006801:Humans; D007093:Imidazoles / Q000737:chemistry* / Q000494:pharmacology; D008297:Male; D015394:Molecular Structure; D010726:Phosphodiesterase Inhibitors / Q000737:chemistry* / Q000494:pharmacology; D010879:Piperazines / Q000737:chemistry* / Q000494:pharmacology; D013450:Sulfones / Q000737:chemistry / Q000494:pharmacology; D014227:Triazines / Q000737:chemistry / Q000494:pharmacology; D000069058:Vardenafil Dihydrochloride
chemical_list: D007093:Imidazoles; D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D013450:Sulfones; D014227:Triazines; D000069058:Vardenafil Dihydrochloride