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Lee JH, Jung HD, Choi JD, Kang JY, Yoo TK, Park YW. Non-linear association between testosterone and LDL concentrations in men. Andrology 2023; 11:1107-1113. [PMID: 36681877 DOI: 10.1111/andr.13393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 12/23/2022] [Accepted: 01/17/2023] [Indexed: 01/23/2023]
Abstract
BACKGROUND Contradictory data have been reported about the association between testosterone levels and the levels of low-density lipoprotein cholesterol (LDL). OBJECTIVES The aim of this study was to elucidate the association between testosterone and LDL levels. MATERIALS AND METHODS A cross-sectional study was conducted that included 7268 men who had participated in a health examination. Men who took agents that influence serum lipid profiles within the previous 6 months were excluded. A full metabolic work-up and serum testosterone level checks were performed. The main outcome measures included the testosterone level and testosterone <3.5 ng/ml prevalence of each decile of LDL and their polynomial trendlines and the odds ratio (OR) of testosterone <3.5 ng/ml according to the LDL level. RESULTS The polynomial trendline suggests the inverse association of testosterone with the deciles of triglycerides, the positive association of testosterone with the deciles of high-density lipoprotein cholesterol and the inverted U-shaped association between testosterone and the deciles of LDL. The polynomial trendline suggests a U-shaped curvilinear relationship between the deciles of LDL and the prevalence of testosterone <3.5 ng/ml. The adjusted ORs of testosterone <3.5 ng/ml in men in the lowest and highest deciles were significantly higher than those of men in the 10th-90th deciles of LDL (OR [95% CI], < 10th LDL: 1.4[1.2-1.8]; 10th - 90th LDL: 1.0 [reference]; >90th LDL: 1.3[1.0-1.6]), which reinforces the U-shaped curvilinear relationship between LDL levels and the prevalence of testosterone <3.5 ng/ml. DISCUSSION AND CONCLUSION Further research is needed to elucidate the association of very low or very high LDL concentrations with circulating testosterone in men.
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Affiliation(s)
- Jun Ho Lee
- Department of Urology, Nowon Eulji Medical Center, Eulji University, Seoul, South Korea
| | - Hyuk-Dal Jung
- Department of Urology, Nowon Eulji Medical Center, Eulji University, Seoul, South Korea
| | - Jae Duck Choi
- Department of Urology, Nowon Eulji Medical Center, Eulji University, Seoul, South Korea
| | - Jung Yoon Kang
- Department of Urology, Nowon Eulji Medical Center, Eulji University, Seoul, South Korea
| | - Tag Keun Yoo
- Department of Urology, Nowon Eulji Medical Center, Eulji University, Seoul, South Korea
| | - Yeon Won Park
- Department of Urology, National Police Hospital, Seoul, South Korea
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Choi JD, Yoo TK, Kang JY, Jung HD, Lee JH. Clinical outcomes of withdrawing one medication from long-term combination therapy comprising α-blocker and 5α-reductase inhibitor for benign prostatic hyperplasia. Int Urol Nephrol 2023; 55:845-851. [PMID: 36763223 DOI: 10.1007/s11255-023-03476-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 01/18/2023] [Indexed: 02/11/2023]
Abstract
PURPOSE To assess adherence to combination therapy comprising α-adrenergic blocker (AB) and 5α-reductase inhibitor (5ARI) for benign prostatic hyperplasia (BPH) in a real-world setting and whether lower urinary tract symptoms (LUTS) will relapse after discontinuing one medication from long-term combination therapy. METHODS BPH/LUTS patients receiving initial AB +5ARI combination therapy for at least 1 year between January 2012 and January 2017 were retrospectively analyzed. The patients were classified into DC-AB group (n = 65, AB discontinued) and DC-5ARI group (n = 77, 5ARI discontinued) and followed up. Clinical effects were assessed at baseline and annually using the International Prostatic Symptoms Score (IPSS), quality of life (QoL) index, total prostate volume (TPV), maximal flow rate (Qmax), and prostate-specific antigen (PSA) level. RESULTS Of total 1783 patients, 809 (45.4%) patients were identified with more than 1-year combination therapy. After withdrawal of one medication from combination therapy, the TPV progression (27.6% vs. - 10.8%; P < 0.001) and the requirement for prostate surgery (14.3% vs. 6.1%; P = 0.038) were significantly higher in the DC-5ARI group than in the DC-AB group. The rate of resuming combination therapy was significantly higher in the DC-5ARI group than in the DC-AB group (38.9% vs. 23.0%; P = 0.009). CONCLUSIONS Adherence to combination BPH therapy is relatively low. Although patients adhered to combination therapy for more than 1 year, a higher risk of requiring prostate surgery or resuming combination therapy was observed in patients who discontinued 5ARI.
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Affiliation(s)
- Jae Duck Choi
- Department of Urology, Nowon Eulji Medical Center, Eulji University School of Medicine, 68, Hangeulbiseok-ro, Nowon-gu, Seoul, 01830, Republic of Korea
| | - Tag Keun Yoo
- Department of Urology, Nowon Eulji Medical Center, Eulji University School of Medicine, 68, Hangeulbiseok-ro, Nowon-gu, Seoul, 01830, Republic of Korea
| | - Jung Yoon Kang
- Department of Urology, Nowon Eulji Medical Center, Eulji University School of Medicine, 68, Hangeulbiseok-ro, Nowon-gu, Seoul, 01830, Republic of Korea
| | - Hyuk-Dal Jung
- Department of Urology, Nowon Eulji Medical Center, Eulji University School of Medicine, 68, Hangeulbiseok-ro, Nowon-gu, Seoul, 01830, Republic of Korea
| | - Jun Ho Lee
- Department of Urology, Nowon Eulji Medical Center, Eulji University School of Medicine, 68, Hangeulbiseok-ro, Nowon-gu, Seoul, 01830, Republic of Korea.
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Lee JH, Choi JD, Kang JY, Yoo TK, Park YW. Testosterone deficiency and the risk of anemia: A propensity score-matched analysis. Am J Hum Biol 2022; 34:e23751. [PMID: 35398959 DOI: 10.1002/ajhb.23751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/20/2022] [Accepted: 03/27/2022] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVE There are little data on the endogenous testosterone effect on hemoglobin or hematocrit. Moreover, these data are limited by a cross-sectional study design, a small participant number, and no adjustment for confounding factors. Therefore, the present study was conducted to address the aforementioned limitations of previous studies using a large dataset and propensity score matched analysis. MATERIALS AND METHODS Men who underwent health check-up were analyzed. Participants were divided into two groups using the cut-off testosterone value of 3.5 or 3.0 ng/ml according to a previous definition of testosterone deficiency. Using the cutoff testosterone value of 3.5 ng/ml, 966 cases (testosterone levels <3.5 ng/ml) and 7402 controls (testosterone level ≥3.5 ng/ml) were included, but following propensity score matching, there were 966 cases and 1932 controls. Using the cutoff testosterone value of 3.0 ng/ml, 444 cases (testosterone levels <3.0 ng/ml) and 7924 controls (testosterone level ≥3.0 ng/ml) were included, but following propensity score matching, there were 444 cases and 888 controls. RESULTS After matching, the groups were evenly distributed with respect to age, body mass index, estimated glomerular filtration rate, hypertension, and diabetes in both data sets. After matching, the mean Hb and Hct were significantly lower and the incidence of anemia was significantly greater in the case compared to the control in both data sets. The relative risk of anemia in the case was 2.4 compared to the control in both data sets. CONCLUSION Screening for anemia in patients with testosterone deficiency would be needed and vice versa.
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Affiliation(s)
- Jun Ho Lee
- Department of Urology, Nowon Eulji Medical Center, Eulji University, Seoul, South Korea
| | - Jae Duck Choi
- Department of Urology, Nowon Eulji Medical Center, Eulji University, Seoul, South Korea
| | - Jung Yoon Kang
- Department of Urology, Nowon Eulji Medical Center, Eulji University, Seoul, South Korea
| | - Tag Keun Yoo
- Department of Urology, Nowon Eulji Medical Center, Eulji University, Seoul, South Korea
| | - Yeon Won Park
- Department of Urology, National Police Hospital, Seoul, South Korea
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Lee JH, Won Park Y, Woo Lee S, Duck Choi J, Yoon Kang J, Yoo TK. Association between Predictors of Progression of Benign Prostatic Hyperplasia and Moderate to Severe Prostatitis-like Symptoms: A Propensity Score–Matched Analysis. Prostate Int 2022; 10:92-95. [PMID: 35510082 PMCID: PMC9036114 DOI: 10.1016/j.prnil.2022.03.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/15/2022] [Accepted: 03/03/2022] [Indexed: 12/12/2022] Open
Abstract
Background We investigated the association between moderate-to-severe prostatitis-like symptoms and the predictors of benign prostatic hyperplasia (BPH) progression. Methods Men who underwent health checkups were analyzed. We classified symptoms as “moderate to severe” if the pain score according to the National Institutes of Health-Chronic Prostatitis Symptoms Index was ≥8 and predictors of the progression of BPH were defined as having a prostate-specific antigen (PSA) ≥1.6 ng/mL, total prostate volume (TPV) ≥31 mL, international prostate symptom score (IPSS) ≥20, and maximal flow rate (Qmax) <10.6 mL/s. A total of 8368 patients formed the cohort for propensity score matching, including 445 men with moderate-to-severe prostatitis-like symptoms and 5390 men with no symptoms; ultimately, however, the propensity score of these groups matched at a 1:2 ratio. Results After propensity matching, the two groups were evenly distributed with respect to age, International Index of Erectile Function-5 score, metabolic syndrome, and testosterone. The percentage of participants with ≥1 predictor for the progression of BPH, a TPV of ≥31 cm3, PSA levels of ≥1.6 ng/mL, Qmax <10.6 mL/s, and IPSS ≥20 were all greater in men with moderate-to-severe prostatitis-like symptoms. There were significant differences in the percentage of participants with ≥1 predictor for the progression of BPH (30.6% vs. 58.0%; p < 0.001), Qmax <10.6 mL/s (3.9% vs. 7.0%, p = 0.023), and IPSS ≥20 (9.6% vs. 44.7%, p < 0.001). Conclusion Moderate-to-severe prostatitis-like symptoms are significantly and independently associated with predictors of BPH progression.
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Choi JD, Kim TJ, Jeong BC, Jeon HG, Jeon SS, Kang MY, Yeom SY, Seo SI. ISL1 promotes enzalutamide resistance in castration-resistant prostate cancer (CRPC) through epithelial to mesenchymal transition (EMT). Sci Rep 2021; 11:21984. [PMID: 34753990 PMCID: PMC8578390 DOI: 10.1038/s41598-021-01003-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 09/16/2021] [Indexed: 11/09/2022] Open
Abstract
Abnormal expression of insulin gene enhancer-binding protein 1 (ISL1) has been demonstrated to be closely associated with cancer development and progression in several cancers. However, little is known about ISL1 expression in metastatic castration-resistant prostate cancer (CRPC). ISL1 has also been recognized as a positive modulator of epithelial-mesenchymal transition (EMT). In this study, we focused on ISL1 which showed maximum upregulation at the mRNA level in the enzalutamide-resistant cell line. Accordingly, we found that ISL1 was overexpressed in enzalutamide-resistant C4-2B cells and its expression was significantly related to EMT. Our findings reveal the important role of ISL1 in androgen receptor (AR)-dependent prostate cancer cell growth; ISL1 knockdown reduced the AR activity and cell growth. ISL1 knockdown using small-interfering RNA inhibited AR, PSA, and EMT-related protein expression in C4-2B ENZR cells. In addition, knock-down ISL1 reduced the levels of AKT and p65 phosphorylation in C4-2B ENZR cells and these suggest that knock-down ISL1 suppresses EMT in part by targeting the AKT/NF-κB pathway. Further, ISL1 downregulation could effectively inhibit tumor growth in a human CRPC xenograft model. Together, the present study shows that downregulation of ISL1 expression is necessary for overcoming enzalutamide resistance and improving the survival of CRPC patients.
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Affiliation(s)
- Jae Duck Choi
- Department of Urology, Nowon Eulji Medical Center, Eulji University School of Medicine, Seoul, Republic of Korea
| | - Tae Jin Kim
- Division of Immunology, Department of Molecular Cell Biology and Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
| | - Byong Chang Jeong
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hwang Gyun Jeon
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Seong Soo Jeon
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Min Yong Kang
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Seon Yong Yeom
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Seong Il Seo
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
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Lee JH, Yoo TK, Kang JY, Cho JM, Park YW, Lee SW, Choi JD. Relationship between erectile dysfunction and moderate to severe prostatitis-like symptoms in middle-aged men: a propensity score-matched analysis. Int Urol Nephrol 2021; 53:2261-2266. [PMID: 34546557 DOI: 10.1007/s11255-021-02991-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 09/06/2021] [Indexed: 11/29/2022]
Abstract
PURPOSE We assessed the relationship between chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) and erectile dysfunction (ED) using propensity score matching. METHODS Data from 8727 middle-aged men who had undergone health checkups were analyzed. The National Institutes of Health Chronic Prostatitis Symptoms Index (NIH-CPSI), the International Index of Erectile Function-5 (IIEF), the Premature Ejaculation Diagnostic Tool (PEDT), testosterone measurement, basic blood chemistry, and metabolic syndrome (MetS) assessment were performed in this study. Of the 8727 men considered, 7181 formed the cohort for propensity score matching, including 597 men with moderate to severe prostatitis-like symptoms (case) and 6584 men with no prostatitis-like symptoms (control); ultimately, however, members of the case and control groups were matched at a 1:1 ratio by propensity score. RESULTS After matching, the variables of age, testosterone, PEDT and MetS were evenly distributed between the groups. After matching, the mean IIEF score of the case group was significantly lower than that of the control group (17.2 ± 5.5 vs. 14.7 ± 5.3; P < 0.001). Additionally, the severity of ED was significantly greater in the case group (no, mild, mild to moderate, moderate, and severe, respectively: 27.5%, 30.2%, 24.6%, 13.1%, and 4.7% in the control group; 10.7%, 27.0%, 33.0%, 18.9%, and 10.4% in the case group; P < 0.001). Finally, the rate of moderate to severe ED was significantly higher in the case group than in the control group (17.8% vs. 29.3%; P < 0.001). CONCLUSION Moderate to severe prostatitis-like symptoms were significantly and independently correlated with ED in middle-aged men.
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Affiliation(s)
- Jun Ho Lee
- Department of Urology, Nowon Eulji Medical Center, Eulji University School of Medicine, 327, Gongneung-ro, Nowon-gu, Seoul, 01830, Republic of Korea
| | - Tag Keun Yoo
- Department of Urology, Nowon Eulji Medical Center, Eulji University School of Medicine, 327, Gongneung-ro, Nowon-gu, Seoul, 01830, Republic of Korea
| | - Jung Yoon Kang
- Department of Urology, Nowon Eulji Medical Center, Eulji University School of Medicine, 327, Gongneung-ro, Nowon-gu, Seoul, 01830, Republic of Korea
| | - Jeong Man Cho
- Uijeongbu Eulji Medical Center, Eulji University, Uijeongbu-si, Republic of Korea
| | - Yeon Won Park
- Department of Urology, National Police Hospital, Seoul, South Korea
| | - Sin Woo Lee
- Department of Urology, Nowon Eulji Medical Center, Eulji University School of Medicine, 327, Gongneung-ro, Nowon-gu, Seoul, 01830, Republic of Korea
| | - Jae Duck Choi
- Department of Urology, Nowon Eulji Medical Center, Eulji University School of Medicine, 327, Gongneung-ro, Nowon-gu, Seoul, 01830, Republic of Korea.
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Kang JY, Choi JD, Cho JM, Yoo TK, Park YW, Lee JH. Association of Neutrophil-to-Lymphocyte Ratio, Platelet-to-Lymphocyte Ratio, and Lymphocyte-to-Monocyte Ratio with Benign Prostatic Hyperplasia: A Propensity Score-Matched Analysis. Urol Int 2021; 105:811-816. [PMID: 33508844 DOI: 10.1159/000512894] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 11/04/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION The neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), and lymphocyte-to-monocyte ratio (LMR) have recently been proposed as easily accessible inflammatory biomarkers and as surrogate markers for metabolic disease, cardiovascular disease, and malignancies, including prostate cancer. However, scant studies have investigated the association of NLR, PLR, and LMR with benign prostatic hyperplasia (BPH). METHODS Data from 8,727 middle-aged men who had participated in a health checkup were analyzed. BPH was defined as prostate volume ≥30 mL, International Prostate Symptom Score > 7, and maximal flow rate <15 mL/s. Propensity score matching was considered for 269 men with BPH (cases), and 7,136 men with no BPH (controls), but ultimately, propensity scores were matched at a 2:1 ratio of controls to cases (538 men in the control group and 269 men in the case group). RESULTS After propensity score matching, age, International Index of Erectile Function-5, testosterone, and number of metabolic syndrome component variables were evenly distributed and did not differ significantly between the groups. After matching, PLR and LMR were not significantly different between the 2 groups. However, NLR was significantly higher in the case group than in the control group (median [interquartile range]: 1.4 [1.1; 1.8] vs. 1.5 [1.2; 1.9]; p = 0.024) after matching. CONCLUSION High NLR was significantly associated with the presence of BPH. Our results suggest the possible effect of inflammation on BPH development. A prospective study is needed to investigate the potential role of NLR as a candidate biomarker of BPH.
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Affiliation(s)
- Jung Yoon Kang
- Department of Urology, Nowon Eulji Medical Center, Eulji University, Seoul, Republic of Korea
| | - Jae Duck Choi
- Department of Urology, Nowon Eulji Medical Center, Eulji University, Seoul, Republic of Korea
| | - Jeong Man Cho
- Department of Urology, Nowon Eulji Medical Center, Eulji University, Seoul, Republic of Korea
| | - Tag Keun Yoo
- Department of Urology, Nowon Eulji Medical Center, Eulji University, Seoul, Republic of Korea
| | - Yeon Won Park
- Department of Urology, National Police Hospital, Seoul, Republic of Korea
| | - Jun Ho Lee
- Department of Urology, Nowon Eulji Medical Center, Eulji University, Seoul, Republic of Korea,
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Cho JM, Moon KT, Lee JH, Choi JD, Kang JY, Yoo TK. Open simple prostatectomy and robotic simple prostatectomy for large benign prostatic hyperplasia: Comparison of safety and efficacy. Prostate Int 2021; 9:101-106. [PMID: 34386453 PMCID: PMC8322925 DOI: 10.1016/j.prnil.2020.11.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 11/05/2020] [Accepted: 11/29/2020] [Indexed: 11/18/2022] Open
Abstract
Background To compare the safety and efficacy of open simple prostatectomy (OSP) and robotic simple prostatectomy (RSP) for the treatment of large benign prostatic hyperplasia (BPH). Materials and methods We retrospectively reviewed the medical records of 52 patients who underwent OSP (n = 23) and RSP (n = 29) between January 2005 and March 2019 at a single institution. The preoperative status of the patients, complications related to surgery, and the functional outcomes of the surgery were analyzed. Results There were no significant differences in the preoperative total prostate volume, transitional volume, prostate-specific antigen value, and age between the two groups. Postoperative improvements in the International Prostate Symptom Score, maximum urinary flow rate, and postvoid residual were significant and similar for both groups. There were no significant differences between the two groups regarding surgery duration and resected prostate volume. The majority of patients in both groups had the urethral Foley catheter removed within the planned 10 day postoperative period, with the exception of two patients in the OSP group who had prolonged indwelling Foley catheter placement because of persistent hematuria. Postoperative hematocrit changes were significantly lower in the RSP group (RSP: 7.8 ± 4.1%, OSP: 14.2 ± 4.9%, P < 0.001). Seven patients (30.4%) who underwent OSP and two patients (6.9%) who underwent RSP were transfused because of significant intraoperative bleeding. Two patients from the RSP group who received transfusion comprised the first two cases that underwent RSP treatment. During the follow-up period, two patients (one patient in the OSP group and one patient in the RSP group) underwent transurethral incision of the bladder neck for bladder neck contracture. Conclusion Both OSP and RSP can produce excellent outcomes after surgery. However, complications of bleeding are significantly less prevalent in RSP, suggesting that RSP can replace conventional OSP.
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Affiliation(s)
- Jeong Man Cho
- Department of Urology, Eulji Medical Center, Eulji University School of Medicine, Seoul, South Korea
| | - Kyong Tae Moon
- Department of Urology, Eulji Medical Center, Eulji University School of Medicine, Seoul, South Korea
| | - Jun Ho Lee
- Department of Urology, Eulji Medical Center, Eulji University School of Medicine, Seoul, South Korea
| | - Jae Duck Choi
- Department of Urology, Eulji Medical Center, Eulji University School of Medicine, Seoul, South Korea
| | - Jung Yoon Kang
- Department of Urology, Eulji Medical Center, Eulji University School of Medicine, Seoul, South Korea
| | - Tag Keun Yoo
- Department of Urology, Eulji Medical Center, Eulji University School of Medicine, Seoul, South Korea
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Abstract
Nucleobindin 2 (NUCB2) has been reported to play an important role in both tumorigenesis and cancer progression. This study aimed to examine the clinical significance of NUCB2 expression urothelial carcinoma of the bladder (UCB).The expression level of NUCB2 and its correlation with clinicopathological parameters was analyzed in 225 UCB tissues by immunohistochemistry. Kaplan-Meier analysis and Cox proportional hazards regression models were used to investigate the correlation between NUCB2 expression and the prognosis of UCB patients. High NUCB2 expression of UCB patients significantly correlated with aggressive clinicopathological features. Patients with high NUCB2 had shorter overall survival and recurrence-free survival in Kaplan-Meier survival curve (P = .018 and P = .001, respectively).Our results show that high expression of NUCB2 associated with aggressive clinicopathological feature and predicted unfavorable prognosis in patients with UCB might serve as feasible biomarker for clinical outcome of UCB patients after surgery and potential therapeutic target in the future.
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Affiliation(s)
- Jeong Man Cho
- Department of Urology, Eulji General Hospital, Eulji University School of Medicine, Seoul, Korea
| | - Kyong Tae Moon
- Department of Urology, Eulji General Hospital, Eulji University School of Medicine, Seoul, Korea
| | - Ho Jung Lee
- Department of Pathology, Eulji General Hospital, Eulji University School of Medicine, Seoul, Korea
| | - Soon Cheol Shin
- Department of Urology, Eulji General Hospital, Eulji University School of Medicine, Seoul, Korea
| | - Jae Duck Choi
- Department of Urology, Eulji General Hospital, Eulji University School of Medicine, Seoul, Korea
| | - Jeong Yoon Kang
- Department of Urology, Eulji General Hospital, Eulji University School of Medicine, Seoul, Korea
| | - Tag Keun Yoo
- Department of Urology, Eulji General Hospital, Eulji University School of Medicine, Seoul, Korea
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Choi JD, Yoo TK, Kang JY, Moon KT, Kim JH, Ahn SH, Lee JH, Cho JM. A Comparative Study of Percutaneous Aspiration with Sclerotherapy and Laparoscopic Marsupialization for Symptomatic Simple Renal Cysts. J Laparoendosc Adv Surg Tech A 2020; 30:514-519. [PMID: 31928507 DOI: 10.1089/lap.2019.0745] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background: Percutaneous aspiration with sclerotherapy (PAS) and laparoscopic marsupialization (LM) are minimally invasive treatment modalities for renal cysts. We aimed to compare the efficacy and cost/effectiveness of LM and PAS for the treatment of simple symptomatic renal cysts. Methods: Data were prospectively collected from three health care institutions in which 80 patients with symptomatic simple renal cysts underwent a single session of PAS with 95% ethanol (PAS group, n = 40) or underwent LM under general anesthesia (LM group, n = 40) between March 2012 and May 2016. We compared the patient profile, duration of procedure, duration of hospital stay, radiological and symptomatic success rates, treatment costs, and incidence of complications between the two groups. Results: At the 6-month follow-up, the radiological success rate in the LM group was significantly greater than that in the PAS group (97.5% versus 60%; P < .001). The symptomatic success rate was comparable in the two groups (95% versus 90%; P = .675). The treatment failure rate did not significantly differ between the two groups (5.0% versus 17.5%, P = .154). The mean total cost in the PAS and LM groups was 1256 USD and 2343 USD, respectively (P = .001). No significant between-group difference was noted regarding the overall complication rate (P = .615). Conclusions: Both LM and PAS are effective and safe procedures for the treatment of symptomatic simple renal cysts. A single session of PAS seems to be a cost-effective method for the management of symptomatic simple renal cysts.
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Affiliation(s)
- Jae Duck Choi
- Department of Urology, Eulji Genaral Hospital, Eulji University School of Medicine, Seoul, Republic of Korea
| | - Tag Keun Yoo
- Department of Urology, Eulji Genaral Hospital, Eulji University School of Medicine, Seoul, Republic of Korea
| | - Jung Yoon Kang
- Department of Urology, Eulji Genaral Hospital, Eulji University School of Medicine, Seoul, Republic of Korea
| | - Kyong Tae Moon
- Department of Urology, Eulji Genaral Hospital, Eulji University School of Medicine, Seoul, Republic of Korea
| | - Jung Hoon Kim
- Department of Urology, Hanil General Hospital, KEPCO Medical Foundation, Seoul, Republic of Korea
| | - Seung Hyun Ahn
- Department of Urology, Hanil General Hospital, KEPCO Medical Foundation, Seoul, Republic of Korea
| | - Jun Ho Lee
- Department of Urology, National Police Hospital, Seoul, Republic of Korea
| | - Jeoung Man Cho
- Department of Urology, Eulji Genaral Hospital, Eulji University School of Medicine, Seoul, Republic of Korea
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Moon KT, Cho HJ, Choi JD, Kang JY, Yoo TK, Cho JM. Laparoscopic Repair of a Ureterosciatic Hernia with Urosepsis. Urol J 2019; 16:616-618. [PMID: 30882165 DOI: 10.22037/uj.v0i0.4459] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Hernias of pelvic floor are very rare condition, and herniations of ureter into sciatic foramen are extremely rare condition which is globally reported only by 32 cases. Clinical aspects of ureterosciatic hernias appeared variously according to the degree of hydronephrosis, inflammation and infection of kidney due to ureter obstruction. Herein, we report our experience of laparoscopic repair in a patient with ureterosciatic hernia combined urosepsis.
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Affiliation(s)
- Kyong Tae Moon
- Department of Urology, Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea.
| | - Hee Ju Cho
- Department of Urology, Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea.
| | - Jae Duck Choi
- Department of Urology, Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea.
| | - Jung Yoon Kang
- Department of Urology, Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea.
| | - Tag Keun Yoo
- Department of Urology, Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea.
| | - Jeong Man Cho
- Department of Urology, Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea.
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Chung JH, Kim KS, Choi JD, Kim TH, Lee KS, Oh CY, Noh JH, Kim JS, Kim WT, Lee SH, Kim JH, Kim TN, Huh W, Lee SW. Effects of poloxamer-based thermo-sensitive sol-gel agent on urethral stricture after transurethral resection of the prostate for benign prostatic hyperplasia: a multicentre, single-blinded, randomised controlled trial. BJU Int 2019; 125:160-167. [PMID: 31444917 DOI: 10.1111/bju.14902] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To evaluate the effectiveness of poloxamer-based thermo-sensitive sol-gel instillation, after transurethral resection of the prostate (TURP), for preventing urethral stricture. PATIENTS AND METHODS In all, 198 patients underwent TURP for benign prostatic hyperplasia. Recruited patients were randomly divided into two groups: groups A and B. Patients in Group A (100 patients, experimental group) received poloxamer-based thermo-sensitive sol-gel instillation and patients in the Group B (98 patients, control group) received lubricant instillation after TURP. Each patient was evaluated at 4 (V1), 12 (V2), and 24 weeks (V3) after TURP. The effectiveness of poloxamer-based thermo-sensitive sol-gel instillation was evaluated based on the International Prostate Symptom Score (IPSS), IPSS-Quality of Life (QoL), Overactive bladder questionnaire (OAB-q), maximum urinary flow rate (Qmax ), post-void residual urine volume (PVR), and cystoscopy. RESULTS Amongst the initial 198 participants, 80 patients in Group A and 83 in Group B completed the study. There were no significant differences in IPSS-QoL and OAB-q between the groups. However, Qmax was significantly different between groups A and B, at a mean (SD) of 18.92 (9.98) vs 15.58 (9.24) mL/s (P = 0.028) at 24 weeks after TURP. On cystoscopic examination, urethral stricture after TURP was found in two of the 80 patients in Group A and 10 of 83 in Group B (P = 0.023). CONCLUSIONS Poloxamer-based thermo-sensitive sol-gel instillation after TURP lowered the incidence of urethral stricture.
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Affiliation(s)
- Jae Hoon Chung
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Kyu Shik Kim
- Department of Urology, Hanyang University College of Medicine, Seoul, South Korea
| | - Jae Duck Choi
- Department of Urology, Eulji Medical Center, Eulji University School of Medicine, Seoul, South Korea
| | - Tae Hyo Kim
- Departments of Urology, College of Medicine, Dong-A University College of Medicine, Busan, South Korea
| | - Ki Soo Lee
- Departments of Urology, College of Medicine, Dong-A University College of Medicine, Busan, South Korea
| | - Cheol Young Oh
- Department of Urology, Hallym University College of Medicine, Seoul, South Korea
| | - Joon Hwa Noh
- Department of Urology, Kwangju Christian Hospital, Gwangju, South Korea
| | - Jun Seok Kim
- Department of Urology, Kwangju Christian Hospital, Gwangju, South Korea
| | - Won Tae Kim
- Department of Urology, College of Medicine, Chungbuk National University, Cheongju, South Korea
| | - Seung Hwan Lee
- Department of Urology, Yonsei University College of Medicine, Seoul, South Korea
| | - Jae Heon Kim
- Department of Urology, Soonchunhyang University College of Medicine, Seoul, South Korea
| | - Tae Nam Kim
- Department of Urology, Pusan National University Hospital, Busan, South Korea
| | - Wan Huh
- Daewoong Pharmaceutical Co. Ltd, Seoul, South Korea
| | - Seung Wook Lee
- Department of Urology, Hanyang University College of Medicine, Seoul, South Korea
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Abstract
Background and Objectives: The purpose of this study was to compare two methods (transperitoneal laparoscopic ureterolithotomy [TLU] and a combination of ureteroscopic lithotripsy [UL] with retrograde intrarenal surgery [RIRS]) designed for the treatment of large proximal ureteral calculi so that their associated complications and stone-free rates could be assessed. Methods: A total of 100 patients from three different hospitals who were diagnosed with large upper ureteral stones (≥15 mm) were treated via TLU (n = 48) or UL-RIRS (n = 52). They were treated between March 2012 and May 2014. The study compared the complications, success rate, patient characteristics, and the operation time between the two groups. Results: The immediate stone clearance rate after a single session was higher in the TLU group than in the UL-RIRS group (100% vs 73.1%, P = .005). However, there was no significant difference in the stone-free rates between the two groups three months after the last procedure was performed (100% vs 96.1%, P = .655). Regarding patients with a history of early-failure extracorporeal shock-wave lithotripsy, there was no significant difference in the stone-free rate between the two groups three months after the last procedure (100% vs 94.4%, P > .05). Further, overall complication rates between the groups were not statistically different (P = .261). Conclusion: This study demonstrates that TLU is an effective and safe procedure to treat large impacted upper ureteral stones. When compared to UL-RIRS, TLU showed equivalent efficacy and safety, though there were failed first-line treatments.
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Affiliation(s)
- Jae Duck Choi
- Department of Urology, Eulji General Hospital, Eulji University School of Medicine, Seoul, South Korea
| | - Seong Il Seo
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Joonbeom Kwon
- Department of Urology, Daegu Fatima Hospital, Daegu, South Korea
| | - Bum Soo Kim
- Department of Urology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, South Korea
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Chi BH, Jin S, Whang YM, Ahn SH, Choi JD, Lee SY, Chang IH. MP44-16 NBR1 AND KIF14 ARE THE MTOR PATHWAY DOWNSTREAM TO PREDICT THE RECURRENCE IN NON-MUSCLE INVASIVE LOW GRADE UROTHELIAL CARCINOMA OF THE BLADDER. J Urol 2017. [DOI: 10.1016/j.juro.2017.02.1347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kim KS, Kim TH, Noh JH, Bae JH, Oh CY, Cho JS, Yu HS, Lee SH, Cho SY, Cho HJ, Cho JM, Choi JD, Han JH, Ha US, Hong SH, Kim YT, Choi HY, Lee SW. PD69-03 COMPARISON OF EFFICAY AND SAFETY FOR ERECTILE DYSFUNCTION OF MIRODENALFIL 50MG ONCE DAILY AND 100MG ON-DEMAND IN PATIENTS WITH RADICAL PROSTATECTOMY : MULTICENTER, RANDOMIZED TRIAL. J Urol 2017. [DOI: 10.1016/j.juro.2017.02.3144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Choi SY, Lee SY, Chi BH, Ahn SH, Choi JD, Lee SY, Chang IH. MP95-04 URBANIZATION MAY AFFECT THE INCIDENCE OF UROLITHIASIS IN SOUTH KOREA. J Urol 2017. [DOI: 10.1016/j.juro.2017.02.3006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Chi BH, Jin S, Whang YM, Ahn SH, Choi JD, Lee SY, Chang IH, Shim B. MP44-15 ANXA10 AND ATP7A ARE THE MTOR PATHWAY DOWNSTREAM TO PREDICT THE RECURRENCE AND PROGRESSION IN NON-MUSCLE INVASIVE HIGH GRADE UROTHELIAL CARCINOMA OF THE BLADDER. J Urol 2017. [DOI: 10.1016/j.juro.2017.02.1346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Kim JW, Moon YT, Kim KD, Kim TH, Myung SC, Chang IH, Ahn SH, Choi JD, Kim JH, Kim MS, Lee SY. MP74-11 PREDICTING TIME TO RECOVERY OF URINARY RETENTION. J Urol 2016. [DOI: 10.1016/j.juro.2016.02.1708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kim JW, Moon YT, Kim KD, Kim TH, Myung SC, Ahn SH, Choi JD, Kim JH, Kim MS, Lee SY, Chi BH, Chang IH. MP45-10 IDENTIFICATION OF DOWNSTREAM GENES OF THE MTOR PATHWAY THAT PREDICT RECURRENCE AND PROGRESSION IN NON-MUSCLE INVASIVE HIGH-GRADE UROTHELIAL CARCINOMA OF THE BLADDER. J Urol 2016. [DOI: 10.1016/j.juro.2016.02.287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kim JH, Kim KH, Kim HJ, Lee J, Myung SC, Choi JD, Ahn SH. MP36-16 THE EXPRESSION OF BETA-DEFENSIN 131 PROMOTES INNATE IMMUNITY IN HUMAN PROSTATE EPITHELIAL CELLS. J Urol 2016. [DOI: 10.1016/j.juro.2016.02.1650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kim JW, Moon YT, Kim KD, Kim TH, Myung SC, Ahn SH, Choi JD, Kim JH, Kim MS, Lee SY, Chi BH, Chang IH. MP82-16 CT FOR EVALUATION OF UROLITHIASIS: IMAGE QUALITY OF ULTRALOW-DOSE (SUB MSV) CT WITH KNOWLEDGE-BASED ITERATIVE RECONSTRUCTION AND DIAGNOSTIC PERFORMANCE OF LOW-DOSE CT WITH STATISTICAL ITERATIVE RECONSTRUCTION. J Urol 2016. [DOI: 10.1016/j.juro.2016.02.2157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kim KS, Kim JH, Chung JH, Oh CY, Kim TH, Bae JH, Han JH, Lee SH, Ha US, Choi JD, Noh JH, Cho SY, Cho HJ, Lee SW, Yang WJ, Lee KS, Sun HY. PD22-04 COMPARISON OF ERECTILE DYSFUNCTION TREATMENT EFFICACY OF MIRODENALFIL 50MG ONCE DAILY AND 100MG ON-DEMAND IN PATIENTS WITH BENIGN PROSTATIC HYPERPLASIA AND ERECTILE DYSFUNCTION: MULTICENTER, RANDOMIZED TRIAL. J Urol 2016. [DOI: 10.1016/j.juro.2016.02.1497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Choi JD, Kim JH, Ahn SH. Transitional Zone Index as a Predictor of the Efficacy of α-Blocker and 5α-Reductase Inhibitor Combination Therapy in Korean Patients with Benign Prostatic Hyperplasia. Urol Int 2016; 96:406-12. [DOI: 10.1159/000442995] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 12/01/2015] [Indexed: 11/19/2022]
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Kim JW, Moon DG, Moon YT, Kim KD, Myung SC, Kim TH, Chang IH, Chi BH, Choi SY, Ahn SH, Choi JD, Kim JH, Kim MS, Kwon JK, Lee SY. MP89-05 CHARACTERISTICS OF SEASONAL VARIATIONS IN NOCTURIA. J Urol 2015. [DOI: 10.1016/j.juro.2015.02.1804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ryu YW, Lim SW, Kim JH, Ahn SH, Choi JD. Comparison of tamsulosin plus serenoa repens with tamsulosin in the treatment of benign prostatic hyperplasia in Korean men: 1-year randomized open label study. Urol Int 2015; 94:187-93. [PMID: 25614155 DOI: 10.1159/000366521] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 08/11/2014] [Indexed: 11/19/2022]
Abstract
INTRODUCTION In Korea, increasing attention has recently been given to the use of phytotherapeutic agents to alleviate the symptoms of BPH. Serenoa repens has been shown to have an equivalent efficacy to Finasteride or Tamsulosin in the treatment of BPH in previous studies. The present study was designed to compare the efficacy and safety of Serenoa repens plus tamsulosin with tamsulosin only over 12 months in men with LUTS secondary to BPH. MATERIALS AND METHODS One hundred forty men with symptomatic BPH (IPSS≥10) were recruited in our hospital for a 12-month, open-label, randomized trial. Patients were randomly assigned to either tamsulosin 0.2 mg/day plus Serenoa repens 320 mg/day (n=60) or tamsulosin 0.2 mg/day only (n=60). Prostate volume and PSA were measured at baseline and at end-point, whereas total IPSS, and its storage and voiding subscores, LUTS-related QoL, Qmax, and PVR were evaluated at baseline and later every 6 months. RESULTS Total 103 patients were finally available: 50 in the TAM+SR group and 53 in the TAM group. At 12 months, total IPSS decreased by 5.8 with TAM+SR and 5.5 with TAM (p=0.693); the storage symptoms improved significantly more with TAM+SR (-1.7 vs. -0.8 with TAM, p=0.024). This benefit with regard to storage symptom in the TAM+SR group lasts at 12 months (-1.9 vs. -0.9, p=0.024). The changes of voiding subscore, LUTS-related QoL, Qmax, PVR, PSA, and prostate volume showed no significant differences between the TAM+SR and TAM groups. During the treatment period, 8 patients (16.9%) with TAM and 10 (20%) with TAM+SR had drug-related adverse reactions, which included ejaculatory disorders, postural hypotension, dizziness, headache, gastro-intestinal disorders, rhinitis, fatigue and asthenia. CONCLUSIONS The combination treatment of Serenoa repens and tamsulosin was shown to be more effective than tamsulosin monotherapy in reducing storage symptoms in BPH patients after 6 months and up to 12 months of treatment.
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Affiliation(s)
- Young Woo Ryu
- Department of Urology, KEPCO Medical Center, Seoul, Korea
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Choe JW, Kim KD, Moon YT, Kwon JK, Chang IH, Kim JH, Choi JD, Ahn SH, Kim MS, Ryu JH, Lee SY, Park SH. MP21-05 DUAL INHIBITION BY S6K1 AND ELF4E IS ESSENTIAL FOR CONTROLLING CELLULAR GROWTH AND INVASION IN BLADDER CANCER. J Urol 2014. [DOI: 10.1016/j.juro.2014.02.833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Choe JW, Kim KD, Moon YT, Kwon JK, Chang IH, Kim JH, Choi JD, Ahn SH, Kim MS, Lee SY, Ryu JH, Park SH. PD36-03 WITHDRAWN: EFFICACY OF LOW DOSE NONENHANCED ABDOMINOPELVIC COMPUTED TOMOGRAPHY WITH ITERATIVE RECONSTRUCTION IN DIAGNOSIS OF UROLITHIASIS. J Urol 2014. [DOI: 10.1016/j.juro.2014.02.2440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Choe JW, Kim KD, Moon YT, Kwon JK, Chang IH, Kim JH, Choi JD, Ahn SH, Kim MS, Lee SY, Ryu JH, Park SH. MP21-04 ESTABLISHMENT OF AN ORTHOTOPIC MOUSE NON-MUSCLE INVASIVE BLADDER CANCER MODEL EXPRESSING THE MAMMALIAN TARGET OF RAPAMYCIN SIGNALING PATHWAY. J Urol 2014. [DOI: 10.1016/j.juro.2014.02.832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Choi JD, Park JW, Lee HW, Lee DG, Jeong BC, Jeon SS, Lee HM, Choi HY, Seo SI. A comparison of surgical and functional outcomes of robot-assisted versus pure laparoscopic partial nephrectomy. JSLS 2013; 17:292-9. [PMID: 23925024 PMCID: PMC3771797 DOI: 10.4293/108680813x13693422521359] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Robot-assisted partial nephrectomy (RAPN) is emerging as an alternative to laparoscopic partial nephrectomy (LPN) for the treatment of small renal tumors. We compare the results of LPN and RAPN performed by a single surgeon. METHODS Data from 100 consecutive patients who underwent LPN (n=52) or RAPN (n=48) performed by a single experienced laparoscopic surgeon between October 2007 and June 2010 were analyzed retrospectively. Perioperative data, including clinical, pathological, and functional outcomes, were compared between the LPN and RAPN groups. RESULTS No significant differences were found between groups with regard to mean estimated blood loss, main operation time, warm ischemic time, intraoperative complications, postoperative complications, hospital stay, or percent reduction of hemoglobin. The mean duration of follow-up was 16.2 months for LPN patients versus 8.9 months for RAPN patients (P<.001). With respect to the clamping method, more artery-only clamping occurred during RAPN than LPN (38.5 vs 75%, respectively, P=.001). The mean pathological tumor volume for LPN was 4.0 cm(3) vs 8.2 cm(3) for RAPN (P=.006). The mean resected healthy tissue volume was 25.1 cm(3) for LPN versus 16.1 cm(3) for RAPN (P=.044). There were no significant differences in positive margins or changes in renal function between the 2 cohorts. CONCLUSION RAPN is a comparable and alternative option to LPN, providing equivalent oncological and functional outcomes, as well as comparable morbidity to LPN. Although RAPN could offer the advantages of saving more healthy marginal tissue, longer-term and larger studies are necessary to evaluate the functional advantages.
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Affiliation(s)
- Jae Duck Choi
- Department of Urology, KEPCO Medical Center, Seoul, Republic of Korea
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Abstract
We have previously screened 150 medicinal plants for the inhibition of elastase and found significant inhibitory effects of the extracts of Areca catechu L. on the ageing and inflammation of skin tissues. To isolate and identify the compounds having biological activity, they were further purified by each fraction of solvents, silica gel column chromatography, preparative TLC and reversed-phase HPLC. The peak in HPLC, which coincided with the inhibitory activity against elastase, was identified as a phenolic substance by using various colorimetric methods, UV and IR. IC(50) values of this phenolic substance were 26.9 mug mL(-1) for porcine pancreatic elastase (PPE) and 60.8 mug mL(-1) for human neutrophil elastase (HNE). This phenolic substance showed more potent activity than that of reference compounds, oleanolic acid (76.5 mug mL(-1) for PPE, 219.2 mug mL(-1) for HNE) and ursolic acid (31.0 mug mL(-1) for PPE, 118.6 mug mL(-1) for HNE). According to the Lineweaver-Burk plots, the inhibition against both PPE and HNE by this phenolic substance was competitive inhibition with the substrate. The phenolic substance from A. catechu effectively inhibited hyaluronidase activity (IC(50) : 210 mug mL(-1) ). These results suggest that the phenolic substance purified from A. catechu has an anti-ageing effect by protecting connective tissue proteins.
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Affiliation(s)
- K K Lee
- R & D Center, Coreana Cosmetic Co. Ltd, Jeongchon-ri, Seonggeo-Eup, Cheonan-Si, Chungnam, 330-830, Korea
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Choi JD, Ryu M, Ae Park M, Jeong G, Lee JS. FIP200 inhibits β-catenin-mediated transcription by promoting APC-independent β-catenin ubiquitination. Oncogene 2012; 32:2421-32. [PMID: 22751121 DOI: 10.1038/onc.2012.262] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Focal adhesion kinase-family-interacting protein of 200 kDa (FIP200) has been shown to regulate multiple cellular functions, including cell adhesion, autophagy, development and proliferation. Furthermore, FIP200 is considered to have tumor-suppressive activity, which may be correlated with its inactivation in human breast cancers, in addition to its role as an important signal transduction node. Herein, we report that FIP200 interacts with the oncoprotein β-catenin. Moreover, FIP200 promotes destabilization of wild-type β-catenin, but not a cancer-causing form of β-catenin, and as a result represses the β-catenin-mediated transcription. FIP200-induced degradation of β-catenin is independent of adenomatous polyposis coli (APC) of the well-established β-catenin destruction complex (glycogen synthase kinase-3β/axin/APC), in a component of β-catenin E3 ubiquitin ligase, β-TrCP-dependent manner. Thus, the APC-independent β-catenin degradation by FIP200 suggests a role for FIP200 in tumor suppression in the presence of APC dysfunction. These findings reveal a new and important function of FIP200 in regulation of the Wnt/β-catenin pathway.
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Affiliation(s)
- J D Choi
- Department of Molecular Science and Technology, College of Natural Sciences, Ajou University, Suwon, Korea
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Cha WH, Choi JD, Kim KH, Seo YJ, Lee K. Comparison and efficacy of low-dose and standard-dose tamsulosin and alfuzosin in medical expulsive therapy for lower ureteral calculi: prospective, randomized, comparative study. Korean J Urol 2012; 53:349-54. [PMID: 22670195 PMCID: PMC3364475 DOI: 10.4111/kju.2012.53.5.349] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Accepted: 03/15/2012] [Indexed: 11/18/2022] Open
Abstract
PURPOSE Typically in Korea, for a standard dose (0.4 mg) of tamsulosin, two low doses (0.2 mg) are administered. The aim of this study was to evaluate and compare the efficacy of tamsulosin (0.2 mg and 0.4 mg) and alfuzosin (10 mg) in the treatment of lower ureteral stones. MATERIALS AND METHODS A total of 141 patients presenting with a single 4- to 10-mm sized lower ureteral stone were randomly assigned to 4 groups. Patients in group 1 (n=41) and group 2 (n=30) received an oral dose of 0.2 mg tamsulosin once and twice daily, respectively, and patients in group 3 (n=36) received a daily oral dose of 10 mg alfuzosin. Patients in group 4 (n=34) received trospium chloride only. The spontaneous passage of stones, the stone expulsion time, and adverse effects were evaluated. RESULTS There were no significant differences in patient background, including age, sex, BMI, stone size, stone side, and symptom duration. The spontaneous stone passage rate through the ureter was higher and the stone expulsion time was faster in groups 1, 2, and 3 than in group 4. There were no statistically different changes in groups 1, 2, and 3. The adverse effects observed in all groups were comparable and were mild. CONCLUSIONS Tamsulosin at 0.2 mg and 0.4 mg and alfuzosin (10 mg) proved to be safe and effective. A first cycle of medical expulsive therapy with tamsulosin 0.2 mg could be considered as an option in the management of single lower ureteral stone.
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Affiliation(s)
- Woo Heon Cha
- Department of Urology, Dongguk University College of Medicine, Gyeongju, Korea
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Abstract
Prostatitis is a prevalent condition that encompasses a large array of clinical symptoms with significant impacts on men's life. The diagnosis and treatment of this disorder presents numerous challenges for urologists, most notably, a lack of specific and effective diagnostic methods. Chronic bacterial prostatitis is successfully treated with appropriate antibiotics that penetrate the prostate and kill the causative organisms. Prostatitis category III (chronic pelvic pain syndrome) is common, very bothersome, and enigmatic. Symptoms are usually prolonged and, generally speaking, treatment results are unsatisfactory. During the last decade, research has focused on the distress caused by the condition, but although our knowledge has certainly increased, there have been no real breakthroughs; controversies and many unanswered questions remain. Furthermore, the optimal management of category III prostatitis is not known. Conventional prolonged courses of antibiotic therapy have not proven to be efficacious. Novel therapies providing some evidence for efficacy include alpha-blocker, anti-inflammatory phytotherapy, physiotherapy, neuroleptics, and others, each offering therapeutic mechanisms. A stepwise approach involving multimodal therapy is often successful for treating patients. The UPOINT technique has been used to clinically phenotype these patients and drive the appropriate selection of multimodal therapy.
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Affiliation(s)
- Kyung Seop Lee
- Department of Urology, Dongguk University School of Medicine, Gyeongju, Korea
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Choi JD, Park JW, Lee SY, Jeong BC, Jeon SS, Lee HM, Choi HY, Seo SI. Does prolonged warm ischemia after partial nephrectomy under pneumoperitoneum cause irreversible damage to the affected kidney? J Urol 2012; 187:802-6. [PMID: 22245321 DOI: 10.1016/j.juro.2011.10.140] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Indexed: 11/19/2022]
Abstract
PURPOSE We determined the effects of warm ischemia time on the recovery of renal function after partial nephrectomy under pneumoperitoneum. MATERIALS AND METHODS In this prospective study 37 consecutive patients who underwent laparoscopic partial nephrectomy or robot-assisted partial nephrectomy between June 2008 and May 2009 to remove a single cT1 renal tumor were evaluated using (99m)Tc-diethylenetriamine pentaacetic acid renal scintigraphy preoperatively, and at 3 and 12 months postoperatively. RESULTS The most significant reduction in the glomerular filtration rate of the affected kidney at 3 and 12 months after surgery (p = 0.018, p = 0.036, respectively) was seen for a warm ischemia time cutoff of 28 minutes. The glomerular filtration rate of the affected kidney was consistently and significantly reduced at 3 and 12 months postoperatively (-22.4% to -30.6%, p <0.001) in patients with a warm ischemia time greater than 28 minutes. In contrast, no significant glomerular filtration rate change was seen in patients with a warm ischemia time of 28 minutes or less. In terms of the contributional change of the affected kidney to total renal function, there is a trend toward a recovery after an initial decrease in both groups with a warm ischemia time greater than 28 minutes vs 28 minutes or less. On multivariate analysis warm ischemia time was a strong independent predictor of glomerular filtration rate reduction even 12 months after surgery (β = -1.3; 95% CI -1.8, -0.7; p <0.001). CONCLUSIONS If the warm ischemia time is greater than 28 minutes during laparoscopic partial nephrectomy or robot-assisted partial nephrectomy, the functional damage to the affected kidney progresses even up to 1 year after surgery.
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Affiliation(s)
- Jae Duck Choi
- Department of Urology, Dongguk University Hospital, School of Medicine, Gyungju, Republic of Korea
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Abstract
The standard treatment for a small mass has shifted from radical nephrectomy to partial nephrectomy. The benefits of partial nephrectomy, including preserving renal function, prolonging overall survival, preventing postoperative chronic kidney disease, and reducing cardiovascular events, have been discussed in many studies. With the accumulation of surgeons' experience and simplification of the operative procedures, the warm ischemic time has become shorter despite the indication of tumor size becoming larger. With the help of intraoperative ultrasound, partial nephrectomy can be performed for an endophytic renal mass. Recently, laparoscopic partial nephrectomy has become well indicated for most renal tumors in many centers with advanced laparoscopic expertise. Open partial nephrectomy remains indicated for complex tumors. With technical innovation, robotic partial nephrectomy shows at least comparable perioperative outcomes with a benefit for challenging cases. Laparoendoscopic single-site partial nephrectomy has recently been tried in limited indications and seems to be feasible.
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Affiliation(s)
- Seo Yeon Lee
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Choi JD, La Choi Y, Kim HS, Seo SI, Jeon SS, Lee HM, Jeong BC. Primary extraskeletal osteosarcoma of the seminal vesicle: a case report and literature review. Ann R Coll Surg Engl 2011; 93:e6-8. [PMID: 21944784 PMCID: PMC5827007 DOI: 10.1308/003588411x13008879168577] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/06/2010] [Indexed: 11/22/2022] Open
Abstract
A primary extraskeletal osteosarcoma (EOS) is a rare tumour. An EOS of the seminal vesicle has not been reported in the literature. We describe a case of a seminal vesicle EOS initially detected as a pre-rectal mass on a routine transrectal ultrasound in a 48-year-old man. A computed tomography (CT) scan confirmed the tumour to be arising from the left seminal vesicle. A robot-assisted laparoscopic seminal vesiculectomy was performed to avoid neurovascular bundle injury. Microscopic examination of the resected specimen showed a poorly differentiated osteosarcoma originating from the seminal vesicle. The patient received adjuvant chemotherapy. He is doing well without voiding or erectile dysfunction and he is tumour-free five months after surgery.
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Affiliation(s)
- Jae Duck Choi
- Department of Urology, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Yoon La Choi
- Department of Pathology, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hong Seok Kim
- Department of Urology, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Seong Il Seo
- Department of Urology, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Seong Soo Jeon
- Department of Urology, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hyun Moo Lee
- Department of Urology, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Byong Chang Jeong
- Department of Urology, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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Choi JD, Park JW, Kim HS, Lee SY, Park SY, Kim WJ, Lee JS, Jeong BC, Jeon SS, Lee HM, Choi HY, Seo SI. 530 DOES PROLONGED WARM ISCHEMIA CAUSE IRREVERSIBLE RENAL DAMAGE IN AFFECTED KIDNEY AFTER PARTIAL NEPHRECTOMY UNDER PNEUMOPERITONEUM? J Urol 2011. [DOI: 10.1016/j.juro.2011.02.1254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Choi JD, Kim HS, Ju SH, Lee SY, Han DH, Jeong BC. Initial experience with LESS and hybrid LESS in patients with benign urologic disease. MINIM INVASIV THER 2011; 21:63-70. [PMID: 21332257 DOI: 10.3109/13645706.2010.543982] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
We report our initial experience with 100 laparoendoscopic single site (LESS) and hybrid LESS procedures for benign urologic disease. Between December 2008 and April 2010, we performed LESS and hybrid LESS urologic procedures in 100 cases for various benign urologic diseases. Conversion to standard laparoscopy was necessary in six cases, conversion to hand-assisted laparoscopic surgery occurred in one case, and conversion to open surgery was necessary in one case. Intra- and postoperative complications occurred in nine and four cases, respectively. Totally, the mean operative time was 170 minutes, the mean blood loss was 221 ml, and the mean hospital stay was 5.1 days. The mean patient controlled anesthesia (PCA) equivalents used were 81.5 ml and the mean Visual Analog Pain Scale (VAPS) scores at postoperative day 1 and discharge were 3.8 and 2.1, respectively. The study was limited by retrospective design and short-term follow-up periods. LESS and hybrid LESS procedures are technically feasible in a variety of ablative and reconstructive applications of benign urologic diseases. However, apparent benefits of LESS surgical techniques over conventional laparoscopy are needed to be further explored.
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Affiliation(s)
- Jae Duck Choi
- Department of Urology, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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39
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Choi JD, Park JW, Choi JY, Kim HS, Jeong BC, Jeon SS, Lee HM, Choi HY, Seo SI. Renal Damage Caused by Warm Ischaemia During Laparoscopic and Robot-Assisted Partial Nephrectomy: An Assessment Using Tc 99m-DTPA Glomerular Filtration Rate. Eur Urol 2010; 58:900-5. [DOI: 10.1016/j.eururo.2010.08.044] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Accepted: 08/26/2010] [Indexed: 12/20/2022]
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40
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Kim HS, Jeon SS, Choi JD, Kim W, Han DH, Jeong BC, Seo SI, Lee KS, Lee SW, Lee HM, Choi HY. Detection rates of nonpalpable prostate cancer in Korean men with prostate-specific antigen levels between 2.5 and 4.0 ng/mL. Urology 2010; 76:919-22. [PMID: 20303152 DOI: 10.1016/j.urology.2009.12.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2009] [Revised: 12/09/2009] [Accepted: 12/22/2009] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To evaluate the detection rate and pathology of cancer in Korean men with low levels of prostate-specific antigen (PSA), 2.5-4.0 ng/mL. METHODS We examined 1097 patients with PSA level of 2.5-10.0 ng/mL, who underwent transrectal ultrasonography-guided prostate needle biopsies between January 2008 and March 2009. Of the 1097 biopsy patients, 815 met our criteria of benign findings by digital rectal examination and the absence of cancerous lesions by TRUS. Clinical characteristics and detection rates of prostate cancer, as well as the pathology of specimens obtained by needle biopsies and prostatectomies, were evaluated in these patients. RESULTS Of the 815 patients, 349 had group 1 (PSA level, 2.5-4.0 ng/mL) and 466 had group 2 (PSA level, 4.0-10.0 ng/mL). The percentage of patients diagnosed with prostate cancer was not statistically different between the 2 groups (21.8% in group 1, and 20.2% in group 2). In group 1, 70.7% of patients had a pathologic Gleason score of 7 or higher and 91.4% had organ-confined tumors (pT2). The pathologic characteristics, including Gleason score, pathologic stage, and percentage of insignificant cancer were similar in prostatectomy specimens between group 1 and group 2. CONCLUSIONS Detection rates of nonpalpable prostate cancer in Korean men were 21.8% in group 1 and 20.2% in group 2 without statistically significant difference. Pathologic characteristics of prostatectomy specimens also were similar between group 1 and group 2. These results suggest that a lower PSA level might be considered as an indication for prostate biopsy.
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Affiliation(s)
- Hong Seok Kim
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
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Affiliation(s)
- Jae Duck Choi
- Department of Urology, Daegu Catholic University College of Medicine, Daegu, Korea
| | - Suk Bong Koh
- Department of Obstetrics and Gynecology, Daegu Catholic University College of Medicine, Daegu, Korea
| | - Duk Yoon Kim
- Department of Urology, Daegu Catholic University College of Medicine, Daegu, Korea
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Yoo ES, Kim HT, Choi JD, Kim DY, Sea JH, Chung SK, Kim BW, Park YK, Kwon TG. 1681: Comparison of the Two Different Approaches for the Treatment of Stress Urinary Incontinence. J Urol 2007. [DOI: 10.1016/s0022-5347(18)31869-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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44
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Choi JD, Lee ES. Sclerosing Lipogranuloma by Subcutaneous Injection of Squalene into Penis. Korean J Urol 2007. [DOI: 10.4111/kju.2007.48.1.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Jae Duck Choi
- Department of Urology, Collage of Medicine, Daegu Catholic University, Daegu, Korea
| | - Eun Suk Lee
- Department of Urology, Collage of Medicine, Daegu Catholic University, Daegu, Korea
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Choi JD, Underkoffler LA, Collins JN, Marchegiani SM, Terry NA, Beechey CV, Oakey RJ. Microarray expression profiling of tissues from mice with uniparental duplications of chromosomes 7 and 11 to identify imprinted genes. Mamm Genome 2001; 12:758-64. [PMID: 11668390 DOI: 10.1007/s00335-001-3027-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2001] [Accepted: 06/13/2001] [Indexed: 11/24/2022]
Abstract
Microarray analysis allows the screening of thousands of identifiable genes in a single experiment. The challenge of this approach is to combine the new technology with established genetic tools to associate genes with specific biological function. In this study we have designed a screen to identify imprinted genes from mice with uniparental duplications of proximal Chromosomes (Chrs) 7 and 11, using microarray analysis. By comparing the expression patterns in embryonic and newborn tissues of maternally versus paternally inherited proximal Chrs 7 and 11, we have correctly identified four out of five known imprinted genes represented on a microarray. We have additionally identified two novel imprinted candidate genes as well as a differentially expressed clone that is a potential downstream target. Interpretation of the microarray data requires careful preparation of age- and strain-matched samples and attention to detail in tissue dissection technique.
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Affiliation(s)
- J D Choi
- Division of Human Genetics, The Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, USA
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46
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Abstract
Acetolactate synthase (ALS) catalyzes the first common step in the biosynthesis of valine, leucine, and isoleucine in plants and microorganisms. ALS is the target of several structurally diverse classes of herbicides, including sulfonylureas, imidazolinones, and triazolopyrimidines. The roles of three well-conserved histidine residues (H351, H392, and H487) in tobacco ALS were determined using site-directed mutagenesis. Both H487F and H487L mutations abolished the enzymatic activity as well as the binding affinity for the cofactor FAD. Nevertheless, the mutation of H487F did not affect the secondary structure of the ALS. The K(m) values of H351M, H351Q, and H351F are approximately 18-, 60-, and fivefold higher than that of the wild-type ALS, respectively. Moreover, the K(c) value of H351Q for FAD is about 137-fold higher than that of wALS. Mutants H351M and H351Q showed very strong resistance to Londax (a sulfonylurea) and Cadre (an imidazolinone), whereas mutant H351F was weakly resistant to them. However, the secondary structures of mutants H351M and H351Q appeared to be different from that of wALS. The mutation of H392M did not have any significant effect on the kinetic parameters nor the resistance to ALS-inhibiting herbicides. These results suggest that the His487 residue is located at the active site of the enzyme and is likely involved in the binding of cofactor FAD in tobacco ALS. Mutational analyses of the His351 residue imply that the active site of the ALS is probably close to its binding site of the herbicides, Londax and Cadre.
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Affiliation(s)
- K J Oh
- School of Life Sciences and Research Institute for Genetic Engineering, Chungbuk National University, Cheongju, 361-763, Korea
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Han YH, Chung YH, Kim TY, Hong SJ, Choi JD, Chung YJ. Crystallization of Clonorchis sinensis 26 kDa glutathione S-transferase and its fusion proteins with peptides of different lengths. Acta Crystallogr D Biol Crystallogr 2001; 57:579-81. [PMID: 11264588 DOI: 10.1107/s0907444900019314] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2000] [Accepted: 11/30/2000] [Indexed: 11/10/2022]
Abstract
A Clonorchis sinensis 26 kDa glutathione S-transferase (CsGST) and its fusion proteins containing 14 and 48 amino-acid peptides at the N-terminus have been crystallized using polyethylene glycol monomethylether 550 as a precipitant. Crystals of the three proteins show very similar crystal properties: they diffract to at least 2.3 A resolution and belong to the orthorhombic space group P2(1)2(1)2(1). The unit-cell parameters of CsGST crystals were a = 66.64 (1), b = 68.91 (1), c = 123.41 (2) A, which are very close to those of the crystals of the two fusion proteins. In addition, CsGST fusion proteins containing varying extents of N-terminal-extended peptides are incorporated into a crystal, indicating that the extended peptides have little effect on crystal packing. These results suggest that the crystallization system of CsGST/peptide fusion protein may be generally applicable to obtain crystals of small peptides.
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Affiliation(s)
- Y H Han
- School of Biological Sciences, Chungbuk National University, Cheongju 360-763, South Korea
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48
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Abstract
Acetolactate synthase (ALS) is the common enzyme in the biosynthetic pathways leading to valine, leucine, and isoleucine in plants and microorganisms. ALS is the target site of several classes of structurally unrelated herbicides including sulfonylureas, imidazolinones, and triazolopyrimidines. To identify the residues conferring herbicide tolerance in tobacco ALS, site-directed mutagenesis for three residues, Ala121, Pro187 and Ser652, was performed. Mutant A121T showed strong resistance to Londax (a sulfonylurea) and Cadre (an imidazolinone), while mutant S652T was resistant only to Cadre. The S652N mutation abolished the binding affinity of FAD, and inactivated the enzyme. Double mutation of Ala121 and Ser652 with Thr yielded a mutant highly tolerant to Londax, Cadre, and TP (a triazolopyrimidine sulfonamide), but has enzymatic properties similar to those of wild-type. Substitution of Pro187 with Ser resulted in the enzyme highly susceptible to oxidation and fragmentation. These results suggest that two residues Ala121 and Ser652 are potent residues conferring herbicide resistance in tobacco ALS, and that double mutation of Ala121 and Ser652 by Thr can confer stronger tolerance to Londax, Cadre, and TP.
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Affiliation(s)
- C K Chong
- School of Life Science, Cheongju, 361-763, Korea
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Nam JY, Kim HK, Kwon JY, Han MY, Son KH, Lee UC, Choi JD, Kwon BM. 8-O-Methylsclerotiorinamine, antagonist of the Grb2-SH2 domain, isolated from Penicillium multicolor. J Nat Prod 2000; 63:1303-1305. [PMID: 11000046 DOI: 10.1021/np0001169] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A new secondary metabolite, 8-O-methylsclerotiorinamine (1), was isolated from a strain of Penicillium multicolor, and its structure was established using NMR spectroscopy and chemical evidence. The metabolite inhibited significantly the binding between the Grb2-SH2 domain and the phosphopeptide derived from the Shc protein and also blocked the protein-protein interactions of Grb2-Shc in cell-based experiments, with IC(50) values of 5.3 and 50 microM, respectively.
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Affiliation(s)
- J Y Nam
- Korea Research Institute of Bioscience & Biotechnology, 52 Uen-dong, Yusung, Taejon, 305-333, Republic of Korea
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Kwon JY, Jeong HW, Kim HK, Kang KH, Chang YH, Bae KS, Choi JD, Lee UC, Son KH, Kwon BM. cis-fumagillin, a new methionine aminopeptidase (type 2) inhibitor produced by Penicillium sp. F2757. J Antibiot (Tokyo) 2000; 53:799-806. [PMID: 11079802 DOI: 10.7164/antibiotics.53.799] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selective inhibition against the yeast MetAP2 (methionine aminopeptidase type 2) was detected in the fermentation broth of a fungus F2757 that was later identified as Penicillium janczewskii. A new compound cis-fumagillin methyl ester (1) was isolated from the diazomethane treated fermentation extracts together with the known compound fumagillin methyl ester (2). The cis-fumagillin methyl ester, a stereoisomer of fumagillin methyl ester at the C2'-C3' position of the aliphatic side chain, selectively inhibited growth of the map1 mutant yeast strain (MetAP1 deletion strain) at a concentration as low as 1 ng. However, the wild type yeast w303 and the mutant map2 (MetAP2 deleted) strains were resistant up to 10 microg of the compound. In enzyme experiments, compound 1 inhibited the MetAP2 with an IC50 value of 6.3 nM, but it did not inhibit the MetAP1 (IC50 >200 microM). Compound 2 also inhibited the MetAP2 with an IC50 value of 9.2 nM and 105 microM against MetAP1.
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Affiliation(s)
- J Y Kwon
- Korea Research Institute of Bioscience and Biotechnology, Yusong, Taejon, Republic of Korea
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