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Kwanjin Park

Seoul National University · Medicine

About the Lab

Professor Kwanjin Park's research lab focuses on urological disorders, particularly erectile dysfunction and male reproductive health, with an emphasis on underlying molecular and vascular mechanisms. The lab investigates pharmacological interventions—such as sildenafil and Rho kinase inhibitors—alongside hormonal and oxidative stress pathways in aging and disease models. Key research directions include the pathophysiology of vasculogenic erectile dysfunction, the role of angiotensin II and calcium sensitization pathways, and surgical outcomes in conditions like cryptorchidism and varicocele. The lab integrates preclinical animal models with translational approaches to improve therapeutic strategies for male sexual and reproductive dysfunction.

erectile dysfunctionvascular pathophysiologyRho kinasemale reproductive healthsurgical outcomes

Research Overview

Papers
116
Total Citations
1,458
Papers (5y)
14
Primary Field
Medicine

Research Output Trend

Figures are computed from collected data and may differ slightly.

Publications per year (5y)
14total
2021
2022
2023
2024
2025
Citations per year (5y)
66total
20212022202320242025

Selected Papers

15
1
Article|76 citations·2005
Risk factors in predicting a poor response to sildenafil citrate in elderly men with erectile dysfunction
Kwanjin Park, Ja Hyun Ku, Soo Woong Kim, Jae‐Seung Paick
SJR Q1British Journal of Urology

OBJECTIVE: To assess the clinical efficacy of sildenafil and the potential predictors of poor response to sildenafil in elderly patients with erectile dysfunction (ED). PATIENTS AND METHODS: The study included 162 patients (aged > or = 60 years) treated with sildenafil for at least 8 weeks; all patients were evaluated with a history, physical examination, measurement of total testosterone and a pharmacological erection test. Sexual function before and 8 weeks after treatment was assessed using t

Psychiatry and Mental healthMedicine
2
Article|50 citations·2006
Chronic Administration of an Oral Rho Kinase Inhibitor Prevents the Development of Vasculogenic Erectile Dysfunction in a Rat Model
Kwanjin Park, Soo Woong Kim, Kyong Shin Rhu, Jae‐Seung Paick
SJR Q1The Journal of Sexual Medicine

INTRODUCTION: It has been shown that the Rho/Rho kinase calcium sensitizing pathway has been implicated in the pathogenesis of erectile dysfunction as well as systemic atherosclerosis. AIMS: To test whether chronic treatment of an oral Rho kinase inhibitor (fasudil, 5-Isoquinolinesulfonyl homopiperazine) could prevent the development of both vasculogenic erectile dysfunction and pelvic atherosclerosis in a rat model. METHODS: Rats (3 months old) were divided into three groups (N = 10 in each gro

Psychiatry and Mental healthMedicine
3
Article|43 citations·2008
Chronic Treatment with a Type 5 Phosphodiesterase Inhibitor Suppresses Apoptosis of Corporal Smooth Muscle by Potentiating Akt Signalling in a Rat Model of Diabetic Erectile Dysfunction
Kwanjin Park, Kyong Shin Ryu, Wen Ji Li, Soo Woong Kim, Jae‐Seung Paick
SJR Q1European Urology
Psychiatry and Mental healthMedicine
4
Article|38 citations·2014
The diagnosis of febrile urinary tract infection in children may be facilitated by urinary biomarkers
Hahn-Ey Lee, Do Kyun Kim, Hee Kyung Kang, Kwanjin Park
SJR Q1Pediatric Nephrology
NephrologyMedicine
5
Article|31 citations·2005
Restoration of Erectile Capacity in Normotensive Aged Rats by Modulation of Angiotensin Receptor Type 1
Kwanjin Park, Jae Wook Shin, Jin Kyu Oh, Kyong Shin Ryu, Soo Woong Kim, Jae‐Seung Paick
Journal of AndrologyOA

We investigated the effects of systemic modulation of angiotensin 2 on the erectile dysfunction of aged rats. Young and aged (18 months old) male Sprague-Dawley rats were either treated with daily administration of losartan (angiotensin type 1 receptor antagonist, 30 mg/kg/d PO) or the drug vehicle (control) for 4 weeks (n=6 in each group). We monitored the intracavernosal pressure (ICP) after administration of apomorphine (100 microg/kg), and we measured the degree of lipid peroxidation of corp

Psychiatry and Mental healthMedicine
6
Article|26 citations·2010
An Evolution of Orchiopexy: Historical Aspect
Kwanjin Park, Hwang Choi
Korean journal of urologyOA

The history of treatment for cryptorchidism dates back more than 200 years. This review is intended to highlight some historical aspect that led us to our current surgical treatment of this condition. The medical and historical surgical literatures pertaining to cryptorchidism were reviewed. Data sources were PubMed, Embase, conference proceedings, and bibliographies. No language, date, or publication status restrictions were imposed. The study of cryptorchidism began with the anatomical descrip

SurgeryMedicine
7
Article|23 citations·2012
Time course of hydronephrotic changes following unilateral pyeloplasty
Kwanjin Park, Minki Baek, Sung Yong Cho, Hwang Choi
SJR Q2Journal of Pediatric Urology
Pediatrics, Perinatology and Child HealthMedicine
8
Article|23 citations·2014
Perceived barriers and difficulties of intermittent catheterization: In Korean patients with spinal dysraphism and their parents
Seoung-Wha Lim, Hahn-Ey Lee, Monica M. Davis, Kwanjin Park
SJR Q1Neurourology and Urodynamics

Various perceived barriers were identified in those who need IC and differences were demonstrated over time. Both dedicated space and time are issues. In addition, patients may benefit from emotional support and enhanced communication with community agencies and government to resolve the problems related with privacy.

Public Health, Environmental and Occupational HealthMedicine
9
Article|22 citations·2010
Influence of IGFBP3 Gene Polymorphisms on IGFBP3 Serum Levels and the Risk of Prostate Cancer in Low-risk Korean Men
Kwanjin Park, Jeong Han Kim, Hwang Gyun Jeon, Seok‐Soo Byun, Eunsik Lee
SJR Q2Urology
Endocrinology, Diabetes and MetabolismMedicine
10
Article|20 citations·2011
The Surgical Difficulty of Microsurgical Subinguinal Varicocelectomy is Similar Regardless of Age
Kwanjin Park, Sung Yong Cho, Soo Woong Kim
SJR Q1The Journal of Urology

These results indicated that the surgical difficulty of microsurgical subinguinal varicocelectomy was similar between adults and children. The lack of gubernacular vein enlargement in prepubertal boys may suggest the sparing of testicular delivery in this population.

Reproductive MedicineMedicine
11
Article|19 citations·2004
Clinical features determining the fate of a long-term, indwelling, forgotten double J stents
Kwanjin Park, Seong-Soo Jeon, Hyungkeun Park, Hyeon Hoe Kim
Urological Research
Pulmonary and Respiratory MedicineMedicine
12
Article|16 citations·2014
An analysis of long-term occurrence of renal complications following pediatric pyeloplasty
Hahn-Ey Lee, Kwanjin Park, Hwang Choi
SJR Q2Journal of Pediatric Urology
Pediatrics, Perinatology and Child HealthMedicine
13
Article|16 citations·2020
Urological Evaluation of Tethered Cord Syndrome
Kwanjin Park
SJR Q2Journal of Korean Neurosurgical SocietyOA

To describe how to perform urological evaluation in children with tethered cord syndrome (TCS). Although a common manifestation of TCS is the development of neurogenic bladder in developing children, neurosurgeons often face difficulty in detecting urological problems in patients with TCS. From a urological perspective, diagnosis of TCS in developing children is further complicated due to the differentiation between neurogenic bladder dysfunctions and transient bladder dysfunctions owing to deve

UrologyMedicine
14
Article|15 citations·2012
Nature and Fate of Supranormal Differential Renal Function: Lessons From Long-term Follow-up After Pyeloplasty
Sung Yong Cho, In Sung Kim, Seung-Bae Lee, Hwang Choi, Kwanjin Park
SJR Q2Urology
Pediatrics, Perinatology and Child HealthMedicine
15
Article|14 citations·2013
Urinary Measurement of Neutrophil Gelatinase Associated Lipocalin and Kidney Injury Molecule-1 Helps Diagnose Acute Pyelonephritis in a Preclinical Model
Hahn-Ey Lee, Sun Hee Lee, Minki Baek, Hwang Choi, Kwanjin Park
Journal of BiomarkersOA

Background. The study assessed whether measurement of urinary biomarkers of acute kidney injury could be helpful in diagnosing acute pyelonephritis and subsequent scarring. Method. Escherichia coli J96 (0.3 mL inoculum containing 1 × 10(9)/mL) was directly injected into the renal cortex of 3-week-old female Sprague Dawley rats (n = 20), with saline substituted in a control group (n = 10). Following the injection, urine was collected 2, 7, 14, 28, and 42 days after injection. Urinary neutrophil g

NephrologyMedicine

Research Areas

UrologyPsychiatry and Mental healthPediatrics, Perinatology and Child HealthSurgeryPulmonary and Respiratory MedicinePublic Health, Environmental and Occupational Health

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