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Gravas S, Palacios-Moreno JM, Thompson D, Concas F, Kamola PJ, Roehrborn CG, Oelke M, Kattan MW, Averbeck MA, Manyak M, Cortés V, Lulic Z. Understanding Treatment Response in Individual Profiles of Men with Prostatic Enlargement at Risk of Progression. Eur Urol Focus 2023; 9:178-187. [PMID: 35985933 DOI: 10.1016/j.euf.2022.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/06/2022] [Accepted: 07/19/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND It is unclear how cumulative multivariable effects of clinically relevant covariates impact response to pharmacological treatments for lower urinary tract symptoms (LUTS)/benign prostatic enlargement (BPE). OBJECTIVE To develop models to predict treatment response in terms of International Prostate Symptom Score (IPSS) and the risk of acute urinary retention (AUR) or BPE-related surgery, based on large data sets and using as predictors baseline characteristics that commonly define the risk of disease progression. DESIGN, SETTING, AND PARTICIPANTS A total of 9167 patients with LUTS/BPE at risk of progression in three placebo-controlled dutasteride trials and one comparing dutasteride, tamsulosin, and dutasteride + tamsulosin combination therapy (CT) were included in the analysis to predict response to placebo up to 24 mo and active treatment up to 48 mo. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS Predictors included age, IPSS, total prostate volume (PV), maximum urinary flow rate (Qmax), prostate-specific antigen, postvoid residual urine (PVR), α-blocker usage within 12 mo, and randomised treatment. A generalised least-squares model was developed for longitudinal IPSS and a Cox proportional-hazards model for time to first AUR/surgery. RESULTS AND LIMITATIONS The vast majority of patients benefit from dutasteride or CT when compared with tamsulosin alone. The predicted IPSS improvement with dutasteride or CT increased with greater PV and severity of symptoms at baseline. The tamsulosin effect was lower with greater baseline PV and tended to decrease over time. Predicted AUR/surgery risk was greater with tamsulosin versus CT or dutasteride; this risk increased with larger PV, higher PVR, and lower Qmax (all at baseline). An educational interactive web-based tool facilitates visualisation of the results (www.bphtool.com). Limitations include: the placebo and active-treatment predictions are from different studies, the lack of similar studies for external validation, and the focus on a population at risk of progression from the 4-yr CombAT study. CONCLUSIONS Predictive modelling based on large data sets and visualisation of the risk for individual profiles can improve our understanding of how risk factors for disease progression interact and affect response to different treatments, reinforcing the importance of an individualised approach for LUTS/BPE management. PATIENT SUMMARY We used data from previous studies to develop statistical models for predicting how men with lower urinary tract symptoms or benign prostate enlargement and at risk of disease complications respond to certain treatments according to their individual characteristics.
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Affiliation(s)
- Stavros Gravas
- Department of Urology, Medical School, University of Cyprus, Nicosia, Cyprus
| | | | - Douglas Thompson
- Statistics and Data Science Innovation Hub, GlaxoSmithKline, Stevenage, UK
| | - Federico Concas
- Statistics and Data Science Innovation Hub, GlaxoSmithKline, Stevenage, UK
| | | | - Claus G Roehrborn
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Matthias Oelke
- Department of Urology, St. Antonius-Hospital, Gronau, Germany
| | - Michael W Kattan
- Quantitative Health Sciences Department, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | | | - Michael Manyak
- Global Medical Urology, GlaxoSmithKline, Washington DC, USA
| | - Vanessa Cortés
- Global Medical Urology, GlaxoSmithKline, Bogotá, Colombia
| | - Zrinka Lulic
- Global Medical Classic and Established Products, GlaxoSmithKline, Brentford, UK
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Kosilov K, Kuzina I, Kuznetsov V, Barabash O, Fedorishcheva E. Efficacy of a combination of dutasteride, tadalafil, and solifenacin in the treatment of previously unsuccessful patients. Asian J Urol 2022; 9:42-50. [PMID: 35198395 PMCID: PMC8841250 DOI: 10.1016/j.ajur.2021.04.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 07/15/2020] [Accepted: 09/09/2020] [Indexed: 02/02/2023] Open
Abstract
OBJECTIVE To evaluate the efficacy and safety of simultaneous administration of dutasteride, tadalafil and solifenacin in the treatment of benign prostatic hyperplasia (BPH) with overactive bladder symptoms and lower urinary tract obstruction in previously unsuccessfully treated men. METHODS Patients in Group A (n=97) received dutasteride 0.5 mg/day, tadalafil 2.5 mg/day, and solifenacin 2.5 mg/day; Group B (n=95) received dutasteride 0.5 mg/day, tadalafil 5 mg/day, and solifenacin 5 mg/day; Group C (n=103) received dutasteride 0.5 mg/day, tadalafil 20 mg/day, and solifenacin 10 mg/day. The functional status of the lower urinary tract was assessed using the International Prostate Symptom Score (I-PSS), Overactive Bladder Questionnaire (OABq), International Index of Erectile Function (IIEF), and Male Sexual Health Questionnaire Ejaculatory Dysfunction (MSHQ-EjD) as well as uroflowmetry. RESULTS The total score of the sexual function remained unchanged in Group B of patients 81.3 points vs. 80.2 points (p>0.05) according to MSHQ-EjD, 61.4 points vs. 51.2 points (p>0.05) according to IIEF data. The total assessment of symptoms of hyperactivity significantly decreased in Group C according to OABq data after the 4th week of the study (17.5 points vs. 26.1 points, p<0.05) and remained below the baseline until the end of the study (15.2 points). CONCLUSIONS The simultaneous administration of standard doses of dutasteride, solifenacin, and tadalafil for 3 months is safe, effective, and can be recommended for patients with BPH to reduce symptoms of obstruction and hyperactivity of the bladder and maintain sexual function.
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Affiliation(s)
- Kirill Kosilov
- Department of Social Sciences, School of Humanities, Far Eastern Federal University, Vladivostok, Primorsky region, Russian Federation,Department of Clinical Medicine, School of Medicine, Far Eastern Federal University, Vladivostok, Primorsky region, Russian Federation,Corresponding author. Department of Social Sciences, School of Humanities, Far Eastern Federal University, Vladivostok, Primorsky region, Russian Federation.
| | - Irina Kuzina
- Department of Social Sciences, School of Humanities, Far Eastern Federal University, Vladivostok, Primorsky region, Russian Federation
| | - Vladimir Kuznetsov
- Department of Public Health, Pacific State Medical University, Vladivostok, Primorsky region, Russian Federation
| | - Olga Barabash
- Department of Physical Culture and Health and Sports Work, Vladivostok State University of Economics and Service, Vladivostok, Primorsky region, Russian Federation
| | - Ekaterina Fedorishcheva
- Department of Public Health, Pacific State Medical University, Vladivostok, Primorsky region, Russian Federation
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Clinical Benefit of Tamsulosin and the Hexanic Extract of Serenoa Repens, in Combination or as Monotherapy, in Patients with Moderate/Severe LUTS-BPH: A Subset Analysis of the QUALIPROST Study. J Clin Med 2020; 9:jcm9092909. [PMID: 32917008 PMCID: PMC7564885 DOI: 10.3390/jcm9092909] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 08/31/2020] [Accepted: 09/04/2020] [Indexed: 11/25/2022] Open
Abstract
To investigate whether tamsulosin (TAM) and the hexanic extract of Serenoa repens (HESr) are more effective in combination than as monotherapy in men with moderate-to-severe lower urinary tract symptoms associated with benign prostatic hyperplasia (LUTS/BPH). Subset analysis of data from a 6-month, multicenter observational study. Patients received either tamsulosin (0.4 mg/day) or HESr (320 mg/day) alone or in combination. Primary endpoints were change in symptoms and quality of life. Tolerability was also assessed. Seven hundred and nine patients were available for intention to treat (ITT) analysis, 263 treated with tamsulosin, 262 with HESr, and 184 with TAM + HESr. After 6 months, International Prostate Symptom Score (IPSS) scores improved by a mean (standard deviation) of 7.2 (5.0) points in the TAM + HESr group compared to 5.7 (4.3) points with TAM alone and 5.4 (4.6) points with HESr (p < 0.001). Quality of life showed greatest improvement with combination therapy (p < 0.02). Adverse effects were reported by 1.9% of patients receiving HESr, 13.3% receiving TAM, and 12.0% receiving TAM + HESr (p < 0.001). In men with moderate/severe LUTS/BPH, combination treatment with TAM + HESr produced more effective symptom relief and greater improvement in quality of life than with either treatment alone, with acceptable tolerability.
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Kosilov KV, Kuzina IG, Kuznetsov V, Kosilova EK. Improvement of the symptoms of lower urinary tract and sexual dysfunction with tadalafil and solifenacin after the treatment of benign prostatic hyperplasia with dutasteride. Prostate Int 2020; 8:78-84. [PMID: 32647644 PMCID: PMC7335965 DOI: 10.1016/j.prnil.2019.11.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 10/29/2019] [Accepted: 11/18/2019] [Indexed: 11/21/2022] Open
Abstract
Background The aim of this research is to study the influence of simultaneous taking of tadalafil and solifenacin in standard and double dosage on the lower urinary tract symptoms (LUTS) and sexual dysfunction in men with benign prostatic hyperplasia after the course of dutasteride. Materials and methods The research included 326 patients older than 50 years with benign prostatic hyperplasia coupled with LUTS and sexual dysfunction having undergone the course of treatment with dutasteride. After random division into three groups, patients from the Group A (n = 107) got tadalafil 5 mg/d as monotherapy, from the Group В (n = 107) got tadalafil 5 mg/d and solifenacin 10 mg/d, and from the Group С (n = 112) got tadalafil 5 mg/d and solifenacin 20 mg/d. The duration of treatment was 12 weeks. The rating of sexual function was made with the questionnaires International Index of Erectile Function and other. Results The results of rating of sexual function with the questionnaires MSHQ-EjD and International Index of Erectile Function correlated among themselves. According to MSHQ-EjD, overall rating of the sexual function increased in each of the three groups (A: 67.9 (12.4)/91.5 (10.4), P ≤ 0.05; B: 72.4 (14.5)/102.6 (16.9), P ≤ 0.05; C: 76.6 (16.3)/109.6 (15.6), P ≤ 0.05). The level of hyperactivity symptoms decreased in Groups В and С (В: urgency −2.9 (0.7)/1.1 (0.6), P ≤ 0.05; nocturia 2.7 (1.0)/0.7 (0.5), P ≤ 0.05; C: urgency −2.5 (0.5)/0.8 (0.6), P ≤ 0.05; nocturia −2.8 (0.6)/1.0 (0.5), P ≤ 0.05), and it did not change in the Group A. Conclusions The use of tadalafil as monotherapy significantly improves the sexual function but does not affect overactive bladder symptoms. The combination therapy of tadalafil and solifenacin leads to dramatic improvement of sexual function and reversibility of detrusor hyperactivity symptoms.
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Affiliation(s)
- Kirill V Kosilov
- Department of Social Sciences, School of Humanities, Far Eastern Federal University, Vladivostok, Primorsky Region, Russian Federation
| | - Irina G Kuzina
- Department of Social Science, Far Eastern Federal University, Vladivostok, Primorsky Region, Russian Federation
| | - Vladimir Kuznetsov
- Department of Public Health, Pacific State Medical University, Vladivostok, Primorsky Region, Russian Federation
| | - Ekaterina K Kosilova
- Pacific State Medical University, Vladivostok, Primorsky Region, Russian Federation
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Urinary Biomarkers and Benign Prostatic Hyperplasia. CURRENT BLADDER DYSFUNCTION REPORTS 2019. [DOI: 10.1007/s11884-019-00504-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Fang Q, Chen P, Du N, Nandakumar KS. Analysis of Data From Breast Diseases Treated With 5-Alpha Reductase Inhibitors for Benign Prostatic Hyperplasia. Clin Breast Cancer 2019; 19:e624-e636. [PMID: 31126837 DOI: 10.1016/j.clbc.2019.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 03/18/2019] [Accepted: 04/12/2019] [Indexed: 10/27/2022]
Abstract
OBJECTIVE 5-alpha reductase inhibitors (5ARIs) decrease the androgen levels in vivo and are currently used for the treatment of benign prostatic hyperplasia (BPH) in men. However, these inhibitors can also increase the risk of gynecomastia, breast tenderness, and breast cancer. Hence, we did a systematic review and meta-analysis to evaluate the rate of breast-related diseases in men treated with 5ARIs. MATERIALS AND METHODS PubMed, Embase, Cochrane, and CNKI databases were searched for randomized controlled trials using 5ARIs in patients with BPH. Data were analyzed by using Cochrane Collaboration review manager program and Stata 12.0 software. RESULTS In total, 14 studies were included in the meta-analysis. Gynecomastia was significantly more common with 5ARIs treatment when compared with placebo (3.30% vs. 1.84%; P < .00001) or alpha blockers (ABs) monotherapy (2.33% vs. 1.00%; P = .0009). Both dutasteride (2.03% vs. 0.90%; P < .00001) and finasteride (4.08% vs. 2.43%; P < .00001) are associated with significantly higher risk of gynecomastia than placebo. Risk for breast tenderness was elevated in 5ARIs users (0.83% vs. 0.25%; P = .01) or in users having combination therapy with ABs (2.48% vs. 0.58%; P < .0001). Finasteride is associated with significantly higher risk of breast tenderness than placebo (0.80% vs. 0.25%; P = .02). CONCLUSION In male patients with BPH, 5ARIs have significantly increased the risk of gynecomastia and breast tenderness but may be not to the breast cancer. In addition, combination therapy is significantly associated with higher risk of breast tenderness compared to single ABs monotherapy.
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Affiliation(s)
- Qinghua Fang
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Peiya Chen
- Department of Science and Education, First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Ningchao Du
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Kutty Selva Nandakumar
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China; Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden.
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Kosilov K, Kuzina I, Kuznetsov V, Gainullina Y, Kosilova L, Karashchuk E, Prokofyeva A, Loparev S. The Risk of Sexual Dysfunction and Effectiveness of Treatment of Benign Prostatic Hyperplasia With Severe Lower Urinary Tract Dysfunction With Combination of Dutasteride and Solifenacin. J Sex Med 2018; 15:1579-1590. [DOI: 10.1016/j.jsxm.2018.09.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Revised: 09/10/2018] [Accepted: 09/17/2018] [Indexed: 11/16/2022]
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Yamanishi T, Asakura H, Seki N, Tokunaga S. A 52-week multicenter randomized controlled study of the efficacy and safety of add-on dutasteride and imidafenacin to tamsulosin in patients with benign prostatic hyperplasia with remaining overactive bladder symptoms (DIrecT study). Low Urin Tract Symptoms 2018; 11:115-121. [PMID: 30358116 PMCID: PMC7379254 DOI: 10.1111/luts.12243] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 09/18/2018] [Indexed: 11/29/2022]
Abstract
Objective The aim of this study was to examine the long‐term efficacy of combination of tamsulosin 0.2 mg + dutasteride 0.5 mg + imidafenacin 0.2 mg (TDI) therapy compared with tamsulosin + dutasteride (TD) therapy for 52 weeks in benign prostatic hyperplasia (BPH) patients with a prostate volume (PV) ≥30 mL and remaining overactive bladder (OAB) symptoms after having received tamsulosin for ≥8 weeks. Previously, we reported that the improvement in OAB symptoms at 24 weeks was significantly greater in the TDI than TD group. Methods BPH patients with OAB symptoms after ≥8 weeks tamsulosin were randomly assigned to the TDI or TD group in a ratio of 1:1 ratio, and followed‐up for 52 weeks. Changes in the OAB Symptom Score (OABSS), International Prostate Symptom Score (IPSS), and post‐void residual (PVR) were evaluated. Results In all, 163 patients were randomized, and 125 patients (76.7%) completed 52 weeks of treatment. At Week 52, there were significant decreases in the OABSS and IPSS storage subscore compared with baseline in the TDI versus TD group, but the change in the total IPSS did not differ significantly between the two groups. There was no change in PVR from Week 24 to Week 52 in either group. Conclusions For BPH patients with PVR ≥30 mL and remaining storage symptoms despite tamsulosin monotherapy, TDI treatment showed better results in terms of improved OAB symptoms than TD treatment up to 52 weeks.
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Affiliation(s)
- Tomonori Yamanishi
- Department of Urology, Continence Center, Dokkyo Medical University, Tochigi, Japan
| | - Hirotaka Asakura
- Department of Urology, Saitama Medical University Hospital, Saitama, Japan
| | - Narihito Seki
- Department of Urology, Kyushu Central Hospital, Fukuoka, Japan
| | - Shoji Tokunaga
- Medical Information Center, Kyushu University Hospital, Fukuoka, Japan
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Füllhase C, Chapple C, Cornu JN, De Nunzio C, Gratzke C, Kaplan SA, Marberger M, Montorsi F, Novara G, Oelke M, Porst H, Roehrborn C, Stief C, McVary KT. Systematic review of combination drug therapy for non-neurogenic male lower urinary tract symptoms. Eur Urol 2013; 64:228-43. [PMID: 23375241 DOI: 10.1016/j.eururo.2013.01.018] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 01/15/2013] [Indexed: 12/21/2022]
Abstract
BACKGROUND Several drugs are approved for the treatment of lower urinary tract symptoms (LUTS) in men, but these are mostly used by clinicians as monotherapies. The combination of different compounds, each of which targets a different aspect of LUTS, seems appealing. However, only few clinical trials have evaluated the effects of combination therapies. OBJECTIVE This systematic review analyzes the efficacy and adverse events of combination therapies for male LUTS. EVIDENCE ACQUISITION PubMed and Cochrane databases were used to identify clinical trials and meta-analyses on male LUTS combination therapy. The search was restricted to studies of level of evidence ≥ 1b. A total of 49 papers published between January 1988 and March 2012 were identified. EVIDENCE SYNTHESIS The α1-adrenoceptor antagonist (α1-blocker)/5α-reductase inhibitor (5-ARI) combination provides the most data. This combination seems to be more efficacious in terms of several outcome variables in patients whose prostate volume is between 30 ml and 40 ml when treatment is maintained for >1 yr; when given for <1 yr, α1-blockers alone are just as effective. The combination of α1-blocker/5-ARI shows a slightly increased rate of adverse events. It remains unknown whether its safety and superiority over either drug as monotherapy are sustained after >6 yr. The α1-blocker/muscarinic receptor antagonist (antimuscarinic) combination was most frequently assessed as an add-on therapy to already existing α1-blocker therapy. Inconsistent data derive from heterogeneous study populations and different study designs. Currently, the α1-blocker/antimuscarinic combination appears to be a second-line add-on for patients with insufficient symptom relief after monotherapy. The combination seems to be safe in men with postvoid residual <200 ml. However, there are no trials >4 mo concerning safety and efficacy of this combination. The α1-blocker/phosphodiesterase type 5 inhibitor combination is a new treatment option with only preliminary reports. More studies are needed before definitive conclusions can be drawn. CONCLUSIONS An α1-blocker/5-ARI combination is beneficial for patients whose prostate volume is between 30 ml and 40 ml when medical treatment is intended for >1 yr. Based on short-term follow-up studies, add-on of antimuscarinics to α1-blockers is an option when postvoid residual is <200 ml.
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Affiliation(s)
- Claudius Füllhase
- Department of Urology, Klinikum Grosshadern, Ludwig-Maximilians-University, Munich, Germany
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Chung BH, Lee SH, Roehrborn CG, Siami PF, Major-Walker K, Wilson TH, Montorsi F. Comparison of the response to treatment between Asian and Caucasian men with benign prostatic hyperplasia: Long-term results from the combination of dutasteride and tamsulosin study. Int J Urol 2012; 19:1031-5. [DOI: 10.1111/j.1442-2042.2012.03091.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Homma Y, Gotoh M, Yokoyama O, Masumori N, Kawauchi A, Yamanishi T, Ishizuka O, Seki N, Kamoto T, Nagai A, Ozono S. JUA clinical guidelines for benign prostatic hyperplasia. Int J Urol 2011. [DOI: 10.1111/j.1442-2042.2011.02861.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Homma Y, Gotoh M, Yokoyama O, Masumori N, Kawauchi A, Yamanishi T, Ishizuka O, Seki N, Kamoto T, Nagai A, Ozono S. Outline of JUA clinical guidelines for benign prostatic hyperplasia. Int J Urol 2011; 18:741-56. [DOI: 10.1111/j.1442-2042.2011.02860.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Song SH, Son H, Kim KT, Kim SW, Moon DG, Moon KH, Park K, Park JK, Lee SW, Hyun JS, Park NC. Effect of tamsulosin on ejaculatory function in BPH/LUTS. Asian J Androl 2011; 13:846-50. [PMID: 21785445 DOI: 10.1038/aja.2011.25] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
This study was undertaken to determine the impact on ejaculatory function of tamsulosin (0.2 mg) given once daily (OD) for 12 weeks and to identify risk factors for ejaculatory dysfunction in patients undergoing this treatment. Males with an International Prostatic Symptom Score (IPSS) ≥8 were enrolled in this study. All participants completed questionnaires, including the IPSS and the Male Sexual Health Questionnaire (MSHQ), and serum prostate-specific antigen, transrectal ultrasound and uroflowmetry with post-void residual were measured. After initiating 0.2 mg OD tamsulosin, patients were re-evaluated on the fourth and twelfth weeks of medication. The chi-squared test, the independent t-test and one-way ANOVA were used to compare means. Binary logistic regression analysis was used to calculate the odds ratio for all risk factors. A total of 177 men constituted the study cohort. No significant difference was observed between baseline and follow-up for the erectile function, ejaculatory function, satisfaction, sexual activity and desire domains (EFD, EjFD, SDA and ADD) or for erectile or ejaculatory bother mean scores. After 12 weeks, the overall incidence of ejaculatory dysfunction (EjD) was 13.4%. Incidences of the seven different types of EjD (decreased frequency, delay, dryness, decreased strength/force, decreased volume, decreased pleasure and pain at ejaculation) were 2.4%, 3.1%, 3.9%, 3.9%, 6.3%, 7.1% and 3.1%, respectively. Baseline EjFD scores were higher for IPSS responders than for non-responders (26.09 vs. 24.06, P=0.03). An EjFD score reduction was more frequent in IPSS responders. The incidence of EjD was small, but not negligible and was more frequent in patients with less lower urinary tract symptoms, a smaller prostate, higher baseline MSHQ totals and higher EjFD scores.
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Affiliation(s)
- Sang Hoon Song
- Jeungpyung Health Center, Jeungpyung-gun, Chungbuk, 368-900, Korea
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Akaza H, Kanetake H, Tsukamoto T, Miyanaga N, Sakai H, Masumori N, Nakatsu H, Sagiyama K, Sakamoto S, Endo Y, Yamanouchi T. Efficacy and safety of dutasteride on prostate cancer risk reduction in Asian men: the results from the REDUCE study. Jpn J Clin Oncol 2010; 41:417-23. [PMID: 21123311 DOI: 10.1093/jjco/hyq221] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE A post hoc analysis of Asian men in the REDUCE study was conducted to investigate whether the outcomes were in line with those of the overall population. METHODS REDUCE was a 4-year international, multicenter, randomized, double-blind, placebo-controlled, parallel-group study. Inclusion criteria were men between 50 and 75 years of age, a serum prostate-specific antigen level of 2.5-10.0 ng/ml (50-60 years) or 3.0-10.0 ng/ml (>60 years), and a single, negative prostate biopsy (6-12 cores) within 6 months before enrollment. The primary endpoint was biopsy-detectable prostate cancer. This post hoc analysis included subjects who were recorded as Asian. RESULTS A total of 134 Asians, including 57 Japanese, were randomized to the study treatment. During the study period, the incidence of prostate cancer in the placebo and dutasteride groups was 19.6% (11/56) and 9.3% (5/54), respectively (relative risk reduction, 54%; 95% confidence intervals, -27 to 83%, P = 0.12), in the Asian subpopulation. Fewer tumors with the Gleason scores of 7-10 and 8-10 were detected among dutasteride-treated men. Although the incidences of drug-related sexual adverse events were higher in the dutasteride group, only in rare occasions did they lead to drug discontinuation. CONCLUSIONS The incidence of prostate cancer in the dutasteride group was lower than that in the placebo group, although the difference was not significant. These results paralleled those for the overall population and support the value of dutasteride for prostate cancer risk reduction in Asian men with an increased risk of prostate cancer.
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Affiliation(s)
- Hideyuki Akaza
- Department of Urology, University of Tsukuba, Tsukuba, Japan.
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Current awareness: Pharmacoepidemiology and drug safety. Pharmacoepidemiol Drug Saf 2009. [DOI: 10.1002/pds.1655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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