Nam Cheol Park

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INTRODUCTION Dapoxetine is a short-acting selective serotonin reuptake inhibitor that was recently approved for the on-demand treatment of premature ejaculation (PE). AIM To evaluate the efficacy and safety of dapoxetine 30 mg and 60 mg on demand (prn) in men with PE from the Asia-Pacific region. METHODS This randomized, double-blind, parallel-group,(More)
INTRODUCTION Mirodenafil is a newly developed oral phosphodiesterase type 5 inhibitor, currently under investigation as a treatment for erectile dysfunction (ED). AIM We investigated the efficacy and safety of on demand mirodenafil therapy at fixed doses (50 and 100 mg) in Korean men with a broad range of ED. METHODS A multicenter, randomized,(More)
Varicocelectomy is a management option for patients with painful varicocele. In this study, we assessed the effectiveness of varicocelectomy for painful varicocele and examined the factors that might be predictive of outcome. All patients who underwent a varicocelectomy for pain between February 2007 and July 2009 were included. A review of patient medical(More)
Previous studies have demonstrated that male hypogonadism is associated with a low level of vitamin D. However, no reports have investigated the effects of vitamin D on testosterone levels in Korean men. Our aim was to investigate whether testosterone levels are associated with serum vitamin D levels and whether seasonal variation exists. This(More)
INTRODUCTION The prevalence of erectile dysfunction (ED) and associated risk factors has been described in many countries, but there are still only a few studies from Asia. AIM We investigated the prevalences of ED and premature ejaculation (PE) in Korean men and the impact of general health, lifestyle, and psychosocial factors on these conditions. (More)
INTRODUCTION Epidermal inclusion cysts are benign lesions that can develop in any part of the body. However, the finding of an epidermal inclusion cyst in the penis is rare. AIM The aim of this article was to present the management of a case of a penile epidermal inclusion cyst that occurred because of late complications of a penile girth enhancement(More)
OBJECTIVE To estimate the prevalence of enuresis in children of elementary school age, to evaluate the impact of enuresis on these children and their parents, and to identify the methods and effectiveness of managing enuresis. Subjects and methods A randomly selected cross-sectional study was conducted in one elementary school in each urban ward (nine(More)
Expression of claudin-11, which builds up blood-testis barrier (BTB), was increased in decreased spermatogenesis, including in hypospermatogenesis, spermatocytic and maturation arrest, and Sertoli cell only (SCO) testes. Increased claudin-11 immunoreactivity was observed at the inter-Sertoli tight junctions in maturation arrest and in the cytoplasm of(More)
AIM To evaluate patient preferences for sildenafil citrate or tadalafil (PDE-5 inhibitors available for the treatment of erectile dysfunction [ED]) and assess potential reasons for these preferences. METHODS This open-label study was conducted on Korean men taking sildenafil, at least 6 weeks prior to study entry, for ED. Following screening, patients(More)
PURPOSE The aim of this study was to evaluate the relationship between the levels of reactive oxygen species (ROS) and the clinical characteristics of varicoceles among patients with varicocele-induced infertility. MATERIALS AND METHODS Ninety-eight patients with infertile varicocele and 22 control subjects without varicocele were enrolled. Blood samples(More)