1.Association of redundant foreskin with sexual dysfunction: a cross-sectional study from 5700 participants.
Yuan-Qi ZHAO ; Nian LI ; Xiao-Hua JIANG ; Yang-Yang WAN ; Bo XU ; Xue-Chun HU ; Yi-Fu HOU ; Ji-Yan LI ; Shun BAI
Asian Journal of Andrology 2025;27(1):90-95
A previous study showed that the length of the foreskin plays a role in the risk of sexually transmitted infections and chronic prostatitis, which can lead to poor quality of sexual life. Here, the association between foreskin length and sexual dysfunction was evaluated. A total of 5700 participants were recruited from the andrology clinic at The First Affiliated Hospital of University of Science and Technology of China (Hefei, China). Clinical characteristics, including foreskin length, were collected, and sexual function was assessed by the International Index of Erectile Function-5 (IIEF-5) and Premature Ejaculation Diagnostic Tool (PEDT) questionnaires. Men with sexual dysfunction were more likely to have redundant foreskin than men without sexual dysfunction. Among the 2721 erectile dysfunction (ED) patients and 1064 premature ejaculation (PE) patients, 301 (11.1%) ED patients and 135 (12.7%) PE patients had redundant foreskin, respectively. Men in the PE group were more likely to have redundant foreskin than men in the non-PE group ( P = 0.004). Logistic regression analyses revealed that the presence of redundant foreskin was associated with increased odds of moderate/severe ED (adjusted odds ratio [aOR] = 1.31, adjusted P = 0.04), moderate PE (aOR = 1.38, adjusted P = 0.02), and probable PE (aOR = 1.37, adjusted P = 0.03) after adjusting for confounding variables. Our study revealed a positive correlation between the presence of redundant foreskin and the risk of sexual dysfunction, especially in PE patients. Assessment of the length of the foreskin during routine clinical diagnosis may provide information for patients with sexual dysfunction.
Humans
;
Male
;
Foreskin
;
Cross-Sectional Studies
;
Adult
;
Erectile Dysfunction/epidemiology*
;
Premature Ejaculation/epidemiology*
;
Middle Aged
;
China/epidemiology*
;
Surveys and Questionnaires
;
Sexual Dysfunction, Physiological/epidemiology*
;
Young Adult
2.Association between improved erectile function and dietary patterns: a systematic review and meta-analysis.
Bin YANG ; Chao WEI ; Yu-Cong ZHANG ; De-Lin MA ; Jian BAI ; Zhuo LIU ; Xia-Ming LIU ; Ji-Hong LIU ; Xiao-Yi YUAN ; Wei-Min YAO
Asian Journal of Andrology 2025;27(2):239-244
Erectile dysfunction (ED) is prevalent among men, but its relationship with dietary habits is uncertain. The aim of our study was to assess whether dietary patterns enhance erectile function by reviewing the literature published before August 1, 2022, via PubMed, Web of Science, and EMBASE databases. The data compiled included author details; publication dates, countries, treatments, patient numbers, ages, follow-ups, and clinical trial outcomes, such as ED cases, odds ratios (ORs), confidence intervals (CIs), and International Index of Erectile Function-5 (IIEF-5) scores with means and standard deviations. An analysis of 14 studies with 27 389 participants revealed that plant-based diets (OR = 0.71, 95% CI: 0.66-0.75; P < 0.00001), low-fat diets (OR = 0.27, 95% CI: 0.13-0.53; P = 0.0002), and alternative diets such as intermittent fasting and organic diets (OR = 0.54, 95% CI: 0.36-0.80; P = 0.002) significantly reduced ED risk. High-protein low-fat diets (hazard ratio [HR] = 1.38, 95% CI: 1.12-1.64; P < 0.00001) and high-carb low-fat diets (HR = 0.79, 95% CI: 0.55-1.04; P < 0.00001) improved IIEF-5 scores. Combined diet and exercise interventions decreased the likelihood of ED (OR = 0.49, 95% CI: 0.28-0.85; P = 0.01) and increased the IIEF-5 score (OR = 3.40, 95% CI: 1.69-5.11; P < 0.0001). Diets abundant in fruits and vegetables (OR = 0.97, 95% CI: 0.96-0.98; P < 0.00001) and nuts (OR = 0.54, 95% CI: 0.37-0.80; P = 0.002) were also correlated with lower ED risk. Our meta-analysis underscores a strong dietary-ED association, suggesting that low-fat/Mediterranean diets rich in produce and nuts could benefit ED management.
Humans
;
Male
;
Erectile Dysfunction/epidemiology*
;
Diet
;
Diet, Fat-Restricted
;
Feeding Behavior
;
Penile Erection/physiology*
;
Diet, Vegetarian
3.Risk factors for erectile dysfunction after penile fracture and surgical repair: 12 years of clinical experience.
Mehmet OZTURK ; Muharrem BATURU ; Ozlem BASGUT ; Omer TURGUT ; Yasin KURT ; Omer BAYRAK
Asian Journal of Andrology 2025;27(6):738-742
Penile fracture is a rare urological emergency that may cause erectile dysfunction (ED). We analyzed the factors affecting erectile function in patients who underwent surgical repair for the management of penile fractures. Eighty-two patients who underwent penile fracture surgery in the Department of Urology, University of Gaziantep (Gaziantep, Türkiye) between January 2012 and January 2023 were evaluated. Age, body mass index, time elapsed from the incident of penile fracture to surgery, size, laterality, level of the defect, causes of fracture, presenting signs and symptoms, and relevant complications were recorded. Erectile function of the patients was evaluated preoperatively and at postoperative 3 rd and 6 th months according to the International Index of Erectile Function-5 (IIEF-5) scoring system. The factors decreasing the erection quality of the patients after surgical repair of penile fractures were investigated using IIEF-5 scoring system. Only age, defect size, and time elapsed from fracture onset to surgery were found to be effective on the occurrence of ED ( P = 0.005, P < 0.001, and P < 0.001, respectively). In the receiver operating characteristic (ROC) analysis, the cut-off values were 12.5 mm for defect size ( P < 0.001), 8.5 h for the time elapsed from fracture onset to surgery ( P = 0.036), and 40.5 years for the age of the patients ( P = 0.005). Delayed surgery, defect size, and advanced age had significant and negative effects on erectile function in cases of penile fracture. Before repair of the defect, patients should be given appropriate counseling about the possibility of ED, and early penile rehabilitation should be initiated.
Humans
;
Male
;
Erectile Dysfunction/epidemiology*
;
Penis/surgery*
;
Adult
;
Middle Aged
;
Risk Factors
;
Postoperative Complications/etiology*
;
Young Adult
;
Rupture/surgery*
;
Age Factors
;
Aged
;
Penile Erection
;
Retrospective Studies
5.Updates in penile prosthesis infections.
Amanda R SWANTON ; Ricardo M MUNARRIZ ; Martin S GROSS
Asian Journal of Andrology 2020;22(1):28-33
Inflatable penile prostheses are an important tool in the treatment of medically refractory erectile dysfunction. One of the major complications associated with these prostheses is infections, which ultimately require device explanation and placement of a new device. Over the past several decades, significant work has been done to reduce infection rates and optimize treatment strategies to reduce patient morbidity. This article reviews the current state of knowledge surrounding penile prosthesis infections, with attention to the evidence for methods to prevent infection and best practices for device reimplantation.
Anti-Bacterial Agents/therapeutic use*
;
Anti-Infective Agents, Local/therapeutic use*
;
Antibiotic Prophylaxis/methods*
;
Bandages
;
Carrier State/drug therapy*
;
Chlorhexidine/therapeutic use*
;
Coated Materials, Biocompatible
;
Device Removal
;
Diabetes Mellitus/epidemiology*
;
Erectile Dysfunction/surgery*
;
Gram-Negative Bacterial Infections/therapy*
;
Hair Removal/methods*
;
Humans
;
Immunocompromised Host/immunology*
;
Male
;
Penile Implantation/methods*
;
Penile Prosthesis
;
Preoperative Care/methods*
;
Prosthesis-Related Infections/therapy*
;
Reoperation
;
Risk Factors
;
Spinal Cord Injuries/epidemiology*
;
Staphylococcal Infections/therapy*
;
Staphylococcus aureus
;
Staphylococcus epidermidis
;
Surgical Drapes
;
Surgical Instruments
;
Surgical Wound Infection/therapy*
6.Risk profiling in patients undergoing penile prosthesis implantation.
Linda M HUYNH ; Mohamad M OSMAN ; Faysal A YAFI
Asian Journal of Andrology 2020;22(1):8-14
Penile prosthesis implantation is the gold standard of surgical therapy for patients with medication-refractory erectile dysfunction. However, this umbrella definition includes significant heterogeneity and associated risk profiles that should be candidly discussed and addressed perioperatively. Factors associated with operative success and patient satisfaction are often surgery specific; however, risk profiling via patient selection, preoperative optimization, proper device selection, and intraoperative consideration are highly correlated. Some examples of common risk profiles include comorbidity(ies) such as cardiovascular disease, diabetes mellitus, prior abdominal surgery, Peyronie's disease, and psychological risk factors. Similarly, integration of surgeon- and patient-amenable characteristics is key to decreasing risk of infection, complication, and need for revision. Finally, patient risk profiling provides a unique context for proper device selection and evidence-based intraoperative considerations.
Cardiovascular Diseases/epidemiology*
;
Comorbidity
;
Diabetes Mellitus/epidemiology*
;
Erectile Dysfunction/surgery*
;
Humans
;
Male
;
Mental Disorders/epidemiology*
;
Patient Satisfaction
;
Patient Selection
;
Penile Implantation/methods*
;
Penile Induration/epidemiology*
;
Penile Prosthesis
;
Postoperative Complications/prevention & control*
;
Prosthesis-Related Infections/prevention & control*
;
Reoperation
;
Risk Assessment
;
Surgical Wound Infection/prevention & control*
7.Fundamentals of prosthetic urology.
Asian Journal of Andrology 2020;22(1):20-27
The field of prosthetic urology demonstrates the striking impact that simple devices can have on quality of life. Penile prosthesis and artificial urinary sphincter implantation are the cornerstone procedures on which this specialty focuses. Modern research largely concentrates on decreasing the rates of complication and infection, as the current devices offer superior rates of satisfaction when revision is not necessary. These techniques are also able to salvage sexual function and continence in more difficult patient populations including female-to-male transgender individuals, those with ischemic priapism, and those with erectile dysfunction and incontinence secondary to prostatectomy. This review summarizes modern techniques, outcomes, and complications in the field of prosthetic urology.
Erectile Dysfunction/surgery*
;
Humans
;
Male
;
Penile Implantation/methods*
;
Penile Prosthesis
;
Postoperative Complications/epidemiology*
;
Prostatectomy/adverse effects*
;
Prosthesis Failure
;
Prosthesis Implantation/methods*
;
Prosthesis-Related Infections/epidemiology*
;
Surgical Wound Infection/epidemiology*
;
Urethra/injuries*
;
Urinary Incontinence, Stress/surgery*
;
Urinary Retention/epidemiology*
;
Urinary Sphincter, Artificial
;
Urology
8.Epidemiology regarding penile prosthetic surgery.
Jose A SAAVEDRA-BELAUNDE ; Jonathan CLAVELL-HERNANDEZ ; Run WANG
Asian Journal of Andrology 2020;22(1):2-7
With the onset of a metabolic syndrome epidemic and the increasing life expectancy, erectile dysfunction (ED) has become a more common condition. As incidence and prevalence increase, the medical field is focused on providing more appropriate therapies. It is common knowledge that ED is a chronic condition that is also associated with a myriad of other disorders. Conditions such as aging, diabetes mellitus, hypertension, obesity, prostatic hypertrophy, and prostate cancer, among others, have a direct implication on the onset and progression of ED. Characterization and recognition of risk factors may help clinicians recognize and properly treat patients suffering from ED. One of the most reliable treatments for ED is penile prosthetic surgery. Since the introduction of the penile prosthesis (PP) in the early seventies, this surgical procedure has improved the lives of thousands of men, with reliable and satisfactory results. The aim of this review article is to characterize the epidemiology of men undergoing penile prosthetic surgery, with a discussion about the most common conditions involved in the development of ED, and that ultimately drive patients into electing to undergo PP placement.
Diabetes Complications/surgery*
;
Diabetes Mellitus/epidemiology*
;
Erectile Dysfunction/surgery*
;
Humans
;
Hypertension
;
Impotence, Vasculogenic/surgery*
;
Male
;
Pelvic Bones/injuries*
;
Penile Implantation/statistics & numerical data*
;
Penile Induration/surgery*
;
Penile Prosthesis
;
Penis/injuries*
;
Prostatectomy/adverse effects*
;
Prostatic Neoplasms/surgery*
;
Radiation Injuries/surgery*
;
Radiotherapy/adverse effects*
;
Reoperation
;
Spinal Cord Injuries/epidemiology*
;
Vascular Diseases/epidemiology*
;
Wounds and Injuries/epidemiology*
9.Adipose Tissue-Derived Stem Cell Therapy for Cavernous Nerve Injury-Induced Erectile Dysfunction in the Rat Model: A Systematic Review and Meta-Analysis Using Methodological Quality Assessment
Hyo Jung PARK ; Hyunsuk JEONG ; Yong Hyun PARK ; Hyeon Woo YIM ; U Syn HA ; Sung Hoo HONG ; Sae Woong KIM ; Na Jin KIM ; Ji Youl LEE
International Journal of Stem Cells 2019;12(2):206-217
BACKGROUND AND OBJECTIVES: Few studies were evaluated the effect of blindness on outcome in animal models, though a potential effect of blinding has been reported in clinical trials. We evaluated the effects of adipose tissue-derived stem cells (ADSCs) on cavernous nerve injury (CNI)-induced erectile dysfunction (ED) in the rat and examined how proper blinding of the outcome assessor affected treatment effect. METHODS AND RESULTS: We searched in Pubmed, EMBASE, Cochrane and Web of Science databases from inception to January 2019. We included CNI animal model, randomized controlled experiments, and ADSC intervention. Erectile function and structural changes were assessed by intracavernous pressure and mean arterial pressure (ICP/MAP) ratios, neuronal nitric oxide synthase (nNOS) levels, cavernous smooth muscle and collagen (CSM/collagen) ratios, and cyclic guanosine monophosphate (cGMP). RESULTS: Nineteen studies were included in the final meta-analysis. The ICP/MAP ratio of the ADSC treatment group increased compared to the control group (SMD=1.33, 95%CI: 1.11~1.56, I²=72%). The nNOS level (SMD=2.29, 95%CI: 1.74~2.84, I²=75%), CSM/collagen (SMD=2.57, 95%CI: 1.62~3.52; I²=85%), and cGMP (SMD=2.96, 95%CI: 1.82~4.10, I²=62%) were also increased in the ADSC treatment group. Preplanned subgroup analysis was conducted to explore the source of heterogeneity. Five studies with blinded outcome assessment were significantly less effective than the unblinded studies (SMD=1.33, 95%CI: 0.86~1.80; SMD=1.81, 95%CI: 1.17~2.46, respectively). CONCLUSIONS: ADSCs might be effective in improving erectile function and structural change in CNI-induced ED. However, non-blinded outcome assessors might cause detection bias and overestimate treatment efficacy. Therefore, the ADSC efficacy must be further evaluated with a rigorous study design to avoid bias.
Animals
;
Arterial Pressure
;
Bias (Epidemiology)
;
Blindness
;
Collagen
;
Erectile Dysfunction
;
Guanosine Monophosphate
;
Male
;
Models, Animal
;
Muscle, Smooth
;
Nitric Oxide Synthase Type I
;
Population Characteristics
;
Rats
;
Stem Cells
;
Treatment Outcome
10.Prevalence and predictors of erectile dysfunction in adult male outpatient clinic attendees in Johor, Malaysia.
Rusli Bin NORDIN ; Trived SONI ; Amrina KAUR ; Kean Por LOH ; Shashi MIRANDA
Singapore medical journal 2019;60(1):40-47
INTRODUCTION:
Erectile dysfunction (ED) is a serious global burden that affects men as well as their partners. This study aimed to determine the prevalence and predictors of ED among male outpatient clinic attendees in Johor, Malaysia.
METHODS:
We conducted a cross-sectional study of Malaysian men aged ≥ 18 years attending two major outpatient clinics in Johor Bahru and Segamat in Johor, Malaysia, between 1 January 2016 and 31 March 2016. Subjects were chosen via simple random sampling and 400 patients were recruited. The study instrument was a survey form that consisted of three sections: sociodemographic and comorbid profile, validated English and Malay versions of the 15-item International Index of Erectile Function, and the 21-item Depression Anxiety Stress Scale.
RESULTS:
The overall prevalence of self-reported ED was 81.5%. The prevalence of ED according to severity was as follows: mild (17.0%), mild to moderate (23.8%), moderate (11.3%) and severe (29.5%). Multivariate analysis showed that ED was associated with increasing age (odds ratio [OR] 4.023, 95% confidence interval [CI] 1.633-9.913), Indian as compared to Malay ethnicity (OR 3.252, 95% CI 1.280-8.262), secondary as compared to tertiary education (OR 2.171, 95% CI 1.203-3.919), single as compared to married status (OR 6.119, 95% CI 2.542-14.734) and stress (OR 4.259, 95% CI 1.793-10.114).
CONCLUSION
ED has significant prevalence and severity among adult male outpatient clinic attendees in Johor. Increasing age, Indian ethnicity, lower educational level, singlehood and stress were significant predictors of ED.
Adolescent
;
Adult
;
Aged
;
Comorbidity
;
Cross-Sectional Studies
;
Depression
;
complications
;
Educational Status
;
Erectile Dysfunction
;
diagnosis
;
epidemiology
;
Humans
;
Malaysia
;
epidemiology
;
Male
;
Middle Aged
;
Prevalence
;
Regression Analysis
;
Risk Factors
;
Severity of Illness Index
;
Social Class
;
Young Adult

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