Treatment with sildenafil citrate in renal transplant patients with erectile dysfunction

OBJECTIVE: To assess the safety and efficacy of sildenafil citrate in renal transplant patients with erectile dysfunction, as up to half of men with renal failure may be affected and only 60-75% recover potency after transplantation. PATIENTS AND METHODS: Fifty patients with erectile dysfunction and a functioning renal transplant were treated using sildenafil (mean age 54 years, mean time on dialysis 35 months, mean time from transplantation 20 months). The hypogastric artery was not used during transplantation in any patient. Sildenafil citrate was prescribed at doses of 25 or 50 mg depending on baseline creatinine values and on the response, and plasma levels of cyclosporin/FK506 were monitored. RESULTS: Thirty patients (60%) had a satisfactory response, with a mean time on dialysis of 23 months. Six patients (12%) did not take the sildenafil and in 14 (28%) the drug was ineffective. The mean time on dialysis in this group was 43 months. Six patients (12%) had side-effects that in no case led to withdrawal of treatment. Plasma levels of cyclosporin/FK506 remained within the safety and efficacy limits in all patients. CONCLUSIONS: Treatment with sildenafil citrate in renal transplant patients with erectile dysfunction is an effective and safe option, with few side-effects. Plasma levels of immunosuppressants are unchanged. The response was more effective in patients with a shorter time on dialysis, as penile vascular disease is less advanced.     

Efficacy of sildenafil citrate in prostate brachytherapy patients with erectile dysfunction

Objectives. To ascertain the efficacy of sildenafil citrate (Viagra) in patients with erectile dysfunction (ED) either before or after prostate brachytherapy by an open-label, nonrandomized study.Methods. Sixty-two patients who underwent prostate brachytherapy between March 1995 and July 1998, had ED either before or after brachytherapy, and were interested in treatment with sildenafil comprised the patient population. Clinical and treatment parameters evaluated for medication efficacy included patient age at brachytherapy and at medication administration, hypertension, diabetes, smoking history, onset of ED, potency status before implant, frequency of intercourse before brachytherapy (if potent), use of neoadjuvant hormonal manipulation, use of moderate dose external beam radiation therapy before implantation, choice of isotope, V100 (the percentage of the prostate volume receiving at least 100% of the prescribed minimal peripheral dose), and sildenafil dose.Results. Fifty (80.6%) of 62 patients responded favorably to sildenafil. None of the treatment parameters predicted medication failure, and among the clinical parameters, only diabetes predicted failure (3 of 5) and only with borderline statistical validity (P = 0.046).Conclusions. Our results suggest brachytherapy-induced impotence is as amenable to sildenafil treatment as ED from other causes. In addition, our 80.6% success rate is comparable to reported results for patients who underwent bilateral nerve-sparing radical prostatectomy and significantly better than patients who underwent unilateral nerve-sparing or non-nerve-sparing approaches.     

下尿路综合征与勃起功能障碍关系研究进展

大量流行病学资料证实下尿路综合征与勃起功能障碍二者之间关系密切，但二者之间存在这种关系的机制还不完全清楚。如何选择有效治疗受到关注。本文就这些方面的进展作一综述。     

Effectiveness of doxazosin on erectile dysfunction in patients with lower urinary tract symptoms

Objective  

We evaluated the effectiveness of doxazosin on ED in patients with LUTS/BPH and ED by using symptom score scales. We also evaluated whether or not the presence of asymptomatic inflammatory prostatitis had an effect on the alteration in the symptom scores.     

The female partner''s satisfaction with sildenafil citrate treatment of erectile dysfunction

BACKGROUND: Data on female partners' satisfaction are scarce, although there have been many articles on patient satisfaction after sildenafil citrate treatment. The aim of this study was to evaluate the satisfaction of female partners of patients receiving sildenafil citrate for their erectile dysfunction (ED) and to assess the female partners' sexual function. METHODS: Ninety-eight patients with ED were treated. Their female partners were asked to answer a questionnaire we have prepared to evaluate the efficacy of treatment, sexual satisfaction and changes in quality of life. It also included a question about female sexual function. From the results, the relationship between their female partner's satisfaction and efficacy of treatment, as well as female sexual function, were assessed. RESULTS: Thirty (31%) questionnaires were returned to us for analysis. Effectiveness of the treatment was acknowledged by 90% of the partners. An improvement in their partner's quality of life was noticed by 60% of the women. The majority (66.7%) of the female partners were satisfied with sildenafil citrate treatment and 20% were disappointed. Moreover, 20% of the female partners were concerned about adverse events. Regarding female sexual function, some form of sexual dysfunction affected 46.7% of the women. Furthermore, a significant number (P = 0.0230) of the female partners disappointed with the treatment had some kind of sexual dysfunction. CONCLUSIONS: The results indicated that female partners reported relatively high levels of treatment satisfaction. Female partners' sexual function and anxiety regarding adverse events should be evaluated when their satisfaction with sildenafil citrate treatment is poor despite an improvement of erectile function.     

Association between lower urinary tract symptoms and erectile dysfunction

Our aim was to assess the association between lower urinary tract symptoms (LUTS) and erectile dysfunction by means of International Prostate Symptom Score (IPSS) and Sexual Health Inventory for Men (SHIM) questionnaire. A total of 69 eligible patients who were admitted to our outpatient clinic with lower urinary tract symptoms were included in the study. A self administered questionnaire of IPSS and SHIM were given to patients. Demographics and medical history data were recorded. Any risk factor that may be associated with erectile dysfunction, including coronary artery disease, diabetes, hypertension, and smoking status, was determined in each patient. Correlation tests were used to examine the relationship between lower urinary tract symptoms and erectile dysfunction by controlling the effects of age and comorbidities. Mean age was 58.6 +/- 13.1 31-86 years. Mean SHIM and IPSS total score was 14.3 +/- 7.5 and 11.5 +/- 8.1, respectively. Spearman correlation coefficient between IPSS and SHIM scores was found to be -0.41. There was a significant negative correlation with IPSS total scores of moderate degree when both age and presence of risk factor was controlled (r = -0.31; p = 0.009). Storage symptom scores showed significant correlation with SHIM scores (r = -0.33; p = 0.000). The association between SHIM score and each item of IPSS showed significant correlation for urgency, straining and nocturia when age controlled. The degree of bother by LUTS as determined by the IPSS quality of life question was also correlated with SHIM scores; however, this correlation was not significant when age or risk factor for ED was controlled. The presence of LUTS especially storage symptoms is strongly associated with erectile dysfunction independent of age and comorbidities.     

万艾可在伴心血管疾病ED患者中的临床应用

目的评价万艾可对伴有心血管疾病患者勃起功能障碍(ED)治疗的有效性和安全性。方法伴有心血管疾病的ED患者85例,其中高血压34例,冠心病19例,心律失常32例。性交前1h口服万艾可25mg,以后根据患者对治疗的满意程度和对药物的耐受性,逐渐增加,最大可达100mg。最大剂量不超过100mg/d。疗程为8周。结果万艾可治疗后,本组IIEF-5评分平均为(18．37±4．05)分,IIEF-5评分增加(8．61±2．35)分,配偶满意度总体评价,满意率达72．9%。结论慢性、稳定的心血管疾病ED患者对应用万艾可治疗有良好的有效性和耐受性。     

Combination of alfuzosin and sildenafil is superior to monotherapy in treating lower urinary tract symptoms and erectile dysfunction

OBJECTIVES: This pilot study was undertaken to assess the efficacy and safety of the alpha(1)-blocker alfuzosin 10mg once daily (OD), the PDE-5 inhibitor sildenafil 25mg OD, and the combination of both on lower urinary tract symptoms (LUTS) suggestive of benign prostatic hyperplasia (BPH) and erectile dysfunction (ED). MATERIAL AND METHODS: Men aged 50-76 yr with previously untreated LUTS and ED were randomized to receive alfuzosin (n=20), sildenafil (n=21), or the combination of both (n=21) for 12 wk. Changes from baseline in International Prostate Symptom Score (IPSS), voiding diary, maximum urinary flow rate (Qmax), postvoid residual urine (PVRU) volume, and erectile function domain of the International Index of Erectile Function (IIEF) were assessed at week 12. RESULTS: Improvement of IPSS was significant with the three treatments but greatest with the combination (-24.1%) compared with alfuzosin (-15.6%) and sildenafil (-11.8%) [corrected] alone (p<0.03). Frequency, nocturia, PVR, and Qmax were significantly improved with alfuzosin only and the combination. Improvement in IIEF was slight with alfuzosin (16.7%), marked with sildenafil (49.7%), and greatest with the combination (58.6%). Likewise, increases in the frequency of penetration (Q3) and of maintained erection (Q4) were greater with the combination therapy (65.2% and 68.2%, respectively) than with sildenafil (41.7% and 59.1%, respectively) and alfuzosin (27.3% and 33.3%, respectively) alone. All three treatments were well tolerated. CONCLUSIONS: In this pilot study, the combination of alfuzosin 10 mg OD and sildenafil 25 mg OD is safe and more effective than monotherapy with either agent to improve both voiding and sexual dysfunction in men with LUTS suggestive of BPH.     

Outcome analysis of sildenafil citrate for erectile dysfunction of Japanese patients

The approved maximal dose of sildenafil is only 50 mg in Japan, but the impact of dose regulation on treatment outcomes has not been established. Moreover, the contributors to the efficacy in patients having an intact peripheral nervous system have not been fully elucidated. We assessed in Japanese patients the treatment outcomes of sildenafil for erectile dysfunction (ED) under regulation of the approved dose and identified factors contributing to its efficacy among those with various etiologies other than pelvic surgery. We retrospectively reviewed 196 ED patients treated with sildenafil. The overall efficacy was 70.9% (139/196), and patients with psychological problems and concomitant cardiovascular disease showed high response rates (82.4 and 87.0%, respectively). Of the 139 responders, 89.9% achieved efficacy with a dose of 25 or 50 mg. Logistic regression analysis revealed concomitant cardiovascular disease and a favorable nocturnal penile tumescence result to be independent contributors to the efficacy.     

Sildenafil citrate improves erectile function and urinary symptoms in men with erectile dysfunction and lower urinary tract symptoms associated with benign prostatic hyperplasia: a randomized, double-blind trial

PURPOSE: We evaluated sildenafil for erectile dysfunction and lower urinary tract symptoms in men with the 2 conditions. MATERIALS AND METHODS: This was a 12-week, double-blind, placebo controlled study of sildenafil in men 45 years or older who scored 25 or less on the erectile function domain of the International Index of Erectile Function and 12 or greater on the International Prostate Symptom Score. Men with confirmed or suspected prostate malignancy, or prostate specific antigen 10 ng/ml or more were excluded. End points were changes in International Index of Erectile Function domain scores, International Prostate Symptom Score (irritative, obstructive and quality of life), the Benign Prostatic Hyperplasia Impact Index, the Self-Esteem And Relationship questionnaire and Erectile Dysfunction Inventory of Treatment Satisfaction Index Score. RESULTS: The 189 men receiving sildenafil had significant improvements in erectile function domain score vs the 180 on placebo (9.17 vs 1.86, p<0.0001) and on all other International Index of Erectile Function domains. In men on sildenafil vs placebo significant improvements were observed in International Prostate Symptom Score (-6.32 vs -1.93, p<0.0001), Benign Prostatic Hyperplasia Impact Index (-2.0 vs -0.9, p<0.0001), mean International Prostate Symptom Score quality of life score (-0.97 vs -0.29, p<0.0001) and total Self-Esteem And Relationship questionnaire scores (24.6 vs 4.3, p<0.0001). There was no difference in urinary flow between the groups (p=0.08). Significantly more sildenafil vs placebo treated patients were satisfied with treatment (71.2 vs 41.7, p<0.0001). Sildenafil was well tolerated. CONCLUSIONS: Improved erectile dysfunction and lower urinary tract symptoms with sildenafil in men with the 2 conditions were associated with improved quality of life and treatment satisfaction. Daily dosing with sildenafil may improve lower urinary tract symptoms. However, the lack of effect on urinary flow rates may mean that a new basic pathophysiology paradigm is needed to explain the etiology of lower urinary tract symptoms.     

他达拉非对下尿路症状伴勃起功能障碍的疗效研究

目的:探讨小剂量他达拉非对BPH所致下尿路症状(LUTS)合并ED患者的治疗效果。方法:收集BPH所致LUTS合并ED的患者126例,随机分为治疗Ⅰ组、治疗Ⅱ组、对照组,每组42例。治疗Ⅰ组每日口服他达拉非5 mg+盐酸坦索罗辛缓释胶囊0.2 mg,共12周;治疗Ⅱ组每日口服他达拉非5 mg,共12周;对照组每日服用安慰剂,共12周。在基线时、治疗6周、治疗12周、治疗停药4周、治疗停药8周共5个时间点接受随访,并在每个时间点记录研究对象的排尿期症状亚项评分、储尿期症状亚项评分、IPSS总评分及IIEF-5评分,并嘱患者记录研究期间性生活次数。结果:针对排尿期症状亚项评分:治疗Ⅰ组5个时间点间两两比较差异均有统计学意义(P0.05);治疗Ⅱ组中治疗6周与基线、治疗停药8周与基线、治疗停药8周与治疗6周比较差异无统计学意义(P均0.05);对照组5个时间点差异无统计学意义(P0.05)。治疗6周时、治疗停药8周时治疗Ⅱ组与对照组比较差异无统计学意义(P均0.05);治疗12周、治疗停药4周时3组间两两比较均有统计学意义(P0.05)。针对储尿期症状亚项评分:治疗Ⅰ组、治疗Ⅱ组5个时间点间两两比较差异均有统计学意义(P0.05);对照组5个时间点差异无统计学意义(P0.05)。治疗6周时、治疗12周时、治疗停药4周时、治疗停药8周时治疗Ⅰ组与治疗Ⅱ组比较差异均无统计学意义(P均0.05)。针对IPSS总评分:治疗Ⅰ组、治疗Ⅱ组中治疗停药8周与治疗6周比较差异无统计学意义(P均0.05);对照组5个时间点差异无统计学意义(P0.05)。治疗6周时、治疗12周时、治疗停药4周时、治疗停药8周时3组间两两比较均有统计学意义(P0.05)。针对IIEF-5评分:3组随访期间性生活次数比较差异无统计学意义(P0.05);治疗Ⅰ组中治疗停药4周与治疗6周、治疗停药8周与治疗6周、治疗停药8周与治疗停药4周比较差异无统计学意义(P均0.05);治疗Ⅱ组中治疗停药8周与治疗6周比较差异无统计学意义(P0.05);对照组5个时间点差异无统计学意义(P0.05)。治疗12周时、治疗停药4周时治疗Ⅰ组与治疗Ⅱ组比较差异无统计学意义(P均0.05);治疗6周时、治疗停药8周时3组间两两比较均有统计学意义(P0.05)。结论:每日单用他达拉非5 mg对改善患者储尿期症状亚项评分、IIEF-5评分具有良好效果,且此疗效与联合用药方案效果相似,在停药后仍具有延续性,可推荐用于ED伴以储尿期症状为主的BPH/LUTS患者。