title: Effects of repeated dosing with Udenafil (Zydena) on cognition, somatization and erection in patients with erectile dysfunction: a pilot study.
abstract: The PDE5 inhibitors have recently been found to have cognitive-enhancing effects in animal models. To investigate the efficacy of repeated dosing with a PDE5 inhibitor on cognitive function and somatization in patients with erectile dysfunction, 27 patients with erectile dysfunction received udenafil (100 mg) at 3-day intervals for 2 months. The international index of erectile function-5 (IIEF-5), a cognitive battery (the Korean version of mini-mental state examination (K-MMSE), the frontal assessment battery (K-FAB), the Seoul verbal learning test) and a physical health questionnaire-15 (PHQ-15) were performed at baseline and at 2 months, following the administration of udenafil. The patients were divided on the basis of their IIEF-5 score into responders (change>7) and non-responders. The mean IIEF-5 score was significantly increased after treatment (7.92 ± 3.83 to 16.33 ± 4.75, P<0.001). The scores of K-MMSE (27.03 ± 1.58 to 28.07 ± 1.57, P=0.001), K-FAB (13.65 ± 1.96 to 15.41 ± 1.85, P<0.001) and PHQ-15 (18.92 ± 4.96 to 17.63 ± 4.75, P=0.003) were significantly improved after treatment. In addition, the responders (n=16) had more improved cognitive function (r=0.603, P=0.001) and somatization (r=-0.402, P=0.038) than non-responders (n=11). Repeated dosing with a PDE5 inhibitor seems to improve cognitive function and somatization, as well as erectile function in patients with erectile dysfunction.
authors.affiliation: Department of Neurology, The Catholic University of Korea, Bucheon St. Mary's Hospital, Bucheon, Korea.
authors.forename: Y S
authors.initials: YS
authors.lastname: Shim
authors.forename: C-U
authors.initials: CU
authors.lastname: Pae
authors.forename: S W
authors.initials: SW
authors.lastname: Kim
authors.forename: H W
authors.initials: HW
authors.lastname: Kim
authors.forename: J C
authors.initials: JC
authors.lastname: Kim
authors.forename: J S
authors.initials: JS
authors.lastname: Koh
mesh_terms: D000328:Adult; D000368:Aged; D003071:Cognition / Q000187:drug effects*; D007172:Erectile Dysfunction / Q000188:drug therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D058986:Phosphodiesterase 5 Inhibitors / Q000008:administration & dosage* / Q000009:adverse effects; D011446:Prospective Studies; D011743:Pyrimidines / Q000008:administration & dosage* / Q000009:adverse effects; D012720:Severity of Illness Index; D013001:Somatoform Disorders / Q000188:drug therapy; D013449:Sulfonamides / Q000008:administration & dosage* / Q000009:adverse effects; D000096926:Benzenesulfonamides
chemical_list: D058986:Phosphodiesterase 5 Inhibitors; D011743:Pyrimidines; D013449:Sulfonamides; C419664:udenafil; D000096926:Benzenesulfonamides