Sung Won Lee

INTRODUCTION: Currently, only topical minoxidil (MNX) and oral finasteride (FNS) are approved by the Food and Drug Administration (FDA) and the European Medicines Agency (EMA) for the treatment of androgenetic alopecia. Although FNS is efficacious for hair regrowth, its systemic use is associated with side effects limiting long-term utilization. Exploring topical FNS as an alternative treatment regimen may prove promising. METHODS: A search was conducted to identify studies regarding human in vi

INTRODUCTION: Premature ejaculation (PE) is the most prevalent male ejaculation disorder. The premature ejaculation diagnostic tool (PEDT) was developed to systematically apply the DSM-IV-TR criteria in diagnostic PE. AIMS: To evaluate the diagnostic value of the PEDT and its association with intravaginal ejaculatory latency time (IELT). METHODS: (i) Korean validation of PEDT: data was collected from men interviewed by one of the two clinical experts, who made a diagnostic of present or absence

INTRODUCTION: In humans, the role of testosterone in sexual functions, including sexual desire, nocturnal penile erections, and ejaculatory volume, has been relatively well established. However, the effects of testosterone on intrapenile structure in humans remains controversial. AIM: We assessed the direct effects of testosterone on potassium channels in human corporal smooth muscle cells, in an effort to understand the mechanisms inherent to the testosterone-induced relaxation of corporal smoo

INTRODUCTION: Chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) is a common etiology of premature ejaculation (PE). However, the current data are insufficient to explain this relationship and to support routine screening of men with PE. AIMS: This study aims to evaluate the relationship between PE and CP/CPPS. METHODS: A cross-sectional study was conducted that included 8,261 men who had participated in a health examination. The Premature Ejaculation Diagnostic Tool (PEDT), the National

Summary Onion ( Allium cepa L.) and quercetin protect against oxidative damage and have positive effects on multiple functional parameters of spermatozoa, including viability and motility. However, the associated underlying mechanisms of action have not yet been identified. The aim of this study was to investigate the effect of onion peel extract ( OPE ) on voltage‐gated proton (Hv1) channels, which play a critical role in rapid proton extrusion. This process underlies a wide range of physiologi

Tamsulosin was associated with significantly higher stone expulsion rate and shorter expulsion time in proximal UC ≤ 6 mm compared with conservative managements only. Our results indicate that similar to patients with distal UC, MET using tamsulosin is a reasonable treatment option for patients with proximal UC.

There has been little data regarding the role of intracavernosal injection (ICI) treatment, its discontinuation rate and the reasons of withdrawal in patients with erectile dysfunction (ED) in the era of phosphodiesterase type 5 (PDE5) inhibitors. The aim of this study was to investigate the rate of withdrawal and its associated reasons in patients undergoing ICI therapy. Patients who were prescribed with ICI treatment two times or more were included since the introduction of sildenafil in Korea

UNLABELLED: What's known on the subject? And what does the study add? Schisandra chinensis extract (SCE) has been known to have relaxative effects on penile smooth muscle. A recent study showed that SCE could enhance slidenafil citrate-induced relaxation of penile corpus cavernosum. The current study investigated the mechanism of action of SCE and its constituents on corporal smooth muscle cells. And this study shows that SCE induced relaxation of CSM primarily through an endothelium independent

INTRODUCTION: Testosterone deficiency syndrome (TDS) is a prevalent disease of the aging male with much confusion to its associated presentation, diagnosis, and comorbidities. AIM: We investigated the overall prevalence of TDS and its putative symptoms and associated diseases in a nationwide study on participants recruited from routine checkup. METHODS: One thousand eight hundred seventy-five participants seeking biennial health checkup were enrolled from a nationwide distribution of randomly se

INTRODUCTION: A recent study investigated the role of testosterone (T) in chronic prostatitis or chronic pelvic pain syndrome (CP/CPPS). However, only a small amount of data is available to date, and the results are inconsistent. AIMS: To evaluate the relation between total T (TT) and CP/CPPS. METHODS: We conducted a propensity-matched study by identifying men with a TT level lower than 3.5 ng/mL among 8,336 men in their 40s and 50s. A control group of men with a TT level of at least 3.5 ng/mL m

This integrated analysis of three randomized, placebo-controlled Asian studies confirmed tadalafil 5 mg once daily as an efficacious and well-tolerated treatment for Korean men with BPH-LUTS.