The Potential Role of Urinary Microbiota in Bladder Carcinogenesis: A Systematic Review.

PURPOSE: The quantitative objective of the current systematic review was to identify the potential role of urinary microbiota in bladder cancer (BC) carcinogenesis, invasiveness, progression, and metastasis. MATERIALS AND METHODS: The proposed systematic review was conducted in accordance with critical review according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) statement, and the Joanna Briggs Institute (JBI) methodology for systematic reviews. The search strategy aimed to find both published and unpublished studies up to the January 2024. A JBI appraisal checklist was used to assess possible biases. RESULTS: This systematic review was centered on 27 studies comprising 926 BC patients. Overall, 412 control individuals were compared with BC patients. The most common sampling method was midstream urine collection. Regarding microbial alpha diversity, there was no statistically significant difference between cancerous and healthy samples (n = 8), recurrent and not recurrent (n = 1), responders versus non-responders(n = 1), tumor grades (n = 1), and collection methods (n = 1). However, five studies reported higher diversity in controls, and five other studies reported, conversely, high levels of alpha diversity in BC patients or recurrent cases. Furthermore, a responder (RE) to treatment and a non-muscle invasive bladder cancer (NMIBC) groups demonstrated significant difference with non-responder (NR) and muscle invasive bladder cancer (MIBC), respectively. In terms of beta-diversity, nine studies reported significant diversity between BC patients and controls, one article demonstrated difference between recurrent and not recurrent patients, a study reported significant difference in RE and NR groups whereas another showed opposite, and others (n = 4) did not find any difference between BC, controls, MIBC and NMIBC patients, or between tumor grades. One study reported a difference between the collection method and beta-diversity in males and another reported the difference in females. CONCLUSION: The included studies demonstrate that the composition of urinary microbiota is altered in patients with BC. However, the differentially enriched genera in the urine of these patients vary between studies, and there is too much heterogeneity across studies to make any reliable and valid conclusions. Furthermore, well-designed research is necessary to assess the role of microbiota in the carcinogenesis and progression of BC.

The International Female Coital Incontinence Questionnaire: Translation, Validation, and Reliability Study of the Persian Version.

INTRODUCTION AND HYPOTHESIS: This study was aimed at validating the Persian version of the International Female Coital Incontinence Questionnaire (IFCI-Q). METHODS: In the current study, 150 sexually active women with complaints of any kind of sexual dysfunction from January 2022 to July 2023, who were referred to urogynecology outpatient clinics, completed the IFCI-Q. Age ≥ 18 years and sexually active women were the inclusion criteria for the study. Quantitative calculations were made to determine the content validity ratio and content validity index. A test-retest procedure was utilized to determine the scale reliability. RESULTS: The mean (SD) age of participants was 35.66 (7.03) years. Among a total of 150 women, 21 (14.0%) had coital incontinence (CI), and this disorder happened during penetration in 11 cases (7.3%), orgasm in 9 (6.1%), or both conditions in one woman (0.7%). The intraclass correlation coefficient (95% confidence interval) was 0.79 (0.74, 0.84), and the Cronbach's α coefficient was 0.89. A positive association between the Female Sexual Function Index and the IFCI-Q was also demonstrated by the criteria validity (r = 0. 87 and p = 0.001). CONCLUSION: Regarding validity and reliability, the Persian version of the IFCI-Q can properly evaluate CI in women with sexual dysfunction or complaining of CI.

Intravesical Injection of Abobotulinumtoxin-A in Patients with Bladder Pain Syndrome/Interstitial Cystitis.

OBJECTIVE: This study aimed to evaluate retrospectively the outcomes of Abobotulinumtoxin-A (Dysport®) intravesical injection in refractory interstitial cystitis/ bladder pain syndrome patients to first- and second-line treatment. MATERIALS AND METHODS: From March 2016 to 2021, 44 adult patients with bladder pain syndrome who were refractory to first- and second-line treatment were enrolled in our study. The Bladder Pain/Interstitial Cystitis Symptom Score questionnaire was filled out for every patient before and 1-3 months after intervention in addition to urodynamic evaluation. Patient satisfaction was evaluated using a scoring system that was defined as high or >80% improvement (highly satisfied), intermediate 40%-79% (intermediate satisfaction), and poor 0%-39% improvement. RESULTS: The mean age of our study population was 57 years, including 41 females and 3 males. The mean follow-up time was 9 months. According to the results of urodynamics, 68% of cases had low capacity, and detrusor overactivity, while 18% had only low capacity. In terms of the endpoint outcome, half of the patients (52%) had intermediate satisfaction, whereas 41% reported a good response. Only 3 cases had no response or felt (7%) any improvement after the intervention (poor response). The paired t-test analysis revealed that the mean Bladder Pain/Interstitial Cystitis Symptom Score was reduced after injection (P = .001). CONCLUSION: Our results showed the efficacy and safety of intravesical injections with Abobotulinumtoxin-A (Dysport®) in patients with interstitial cystitis/bladder pain syndrome. Further randomized controlled trials are recommended to investigate its superiority over placebo considering the need for anesthesia, the occurrence of local complications, risks of urinary retention, and a large post-void residual (PVR) volume.

Penile Girth Enhancement Using Amniotic Membrane in a Rabbit Model: A stereological study.

Objectives: This study aimed to evaluate the efficacy of penile girth enhancement (PGE) using amniotic membrane (AM) as a graft in a rabbit model. Additionally, quantitative histological data of the structure of the penis were obtained by stereological studies. Methods: This study was conducted at the Histomorphometry and Stereology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran. In this study, 20 adult male rabbits of similar age and weight were allocated to two groups: sham surgery and surgery+AM. Both groups underwent surgery in which a longitudinal I-shaped midline incision was made in the tunica albuginea on the dorsal surface of the penis. The surgery+AM group underwent PGE using AM as a graft. The penile length and mid circumference were measured using a vernier caliper before and two months after the surgery. Results: The mean total volume and diameter of the penis significantly increased in the surgery+AM group (P <0.03 and P <0.04, respectively). On stereological evaluation, a significant increase in the mean volumes of the tunica albuginea and corpora cavernosa was observed in the surgery+AM group compared to the sham group (P <0.01 and P <0.03, respectively). Additionally, the mean volume densities of the collagen bundles, muscle fibres, cavernous sinuses, and the total number of fibroblasts and smooth muscle cells increased in the surgery+AM group compared to the sham group (P <0.05 each). No infections, bleeding or other complications were observed. Conclusion: The use of AM as a graft is a method that shows promising results for material use in penile enhancement. Thus, it may be considered for PGE in the future.

Management of urolithiasis in pregnancy: A systematic review and meta-analysis.

PURPOSE: Management of nephrolithiasis is unique in pregnancy and requires multidisciplinary care. To identify the effectiveness or safety of temporary drainage or definitive treatment methods to manage urolithiasis in pregnancy. METHODS: The search strategy aimed to find both published and unpublished studies was conducted in August 2021. Studies published in any language on any date were considered for inclusion. RESULTS: Of a total of 3349 publications, 36 studies were included in our qualitative evaluation and 32 studies in the quantitative synthesis. The commonly reported method was stent insertion (n = 29 studies), pneumatic (n = 12), laser (n = 9) lithotripsy, and stone removal using any devices (basket, grasper, or forceps) (n = 11). In seven studies, the authors reported the outcomes of conservative management, and the results showed that the stone-free rate is 54%, and symptom relief occurred in 62% of women. Seven eligible studies reported that 79.9% of urolithiasis were expulsed through stent insertion, while this rate was 94.6% among percutaneous nephrostomy use in two included studies, 88.5% for pneumatic lithotripsy (n = 7 studies), and 76.4% for laser lithotripsy (n = 4 studies), or 95.4% for stone removal method. In addition, adverse events were reported in less than 10% of pregnant women. CONCLUSIONS: The results showed that stent, pneumatic or laser lithotripsy, and ureteroscopic stone removal were the commonest used methods in the included studies. They can be effective and safe treatment approaches without major maternal or neonatal complications, and could be introduced as an effective and safe therapeutic method for urolithiasis during pregnancy. However, most of the included studies had moderate quality according to critical appraisal checklists. Further prospective studies are needed to reach a conclusion.

Psychometric properties of the Persian version of neurogenic bladder symptom score questionnaire: A methodological study on patients with multiple sclerosis and stroke.

OBJECTIVES: Concerning the impact of neurogenic lower urinary tract dysfunction (NLUTD) on quality of life, besides the lack of standard psychometrically-analyzed Persian tools, the present study investigated the validity and reliability of the Persian version of the neurogenic bladder symptom score (NBSS) questionnaire. METHODS: A total of 279 multiple sclerosis (MS) or stroke/cerebrovascular accident (CVA) patients over 18 years of age with NLUTD referred to the neurology clinics entered the study in 2021-2022. After translation, back-translation, and developing a Persian version, its validity and reliability were determined. The content validity index (CVI) and content validity ratio (CVR) were calculated quantitatively. To determine the internal consistency and scale reliability, a test-retest was used. RESULTS: The Cronbach's α coefficient was 0.83 and the intraclass correlation coefficient (95% confidence interval) was 0.85 (0.82, 0.88). Cronbach's α in all domains (incontinence, storage and voiding, and consequence) was greater than 0.70. The criterion validity also showed a positive correlation of NBSS with the International Consultation on Incontinence Questionnaire-overactive bladder (p < 0.001 and r = 0.55). The face validity was acceptable according to the opinion of 10 participants. To determine the CVI and the CVR, 10 experts' panels reviewed all items related to the questionnaire in terms of necessity, clarity, transparency, and relevancy. Based on the expert panel all NBSS criteria got a high score, and all criteria were essential to assess NLUTD (CVI: 0.78-1). CONCLUSIONS: Regarding validity and reliability, the Persian version NBSS questionnaire can properly evaluate NLUTD in MS or stroke/CVA patients.

Outcomes of the anterior approach versus posterior sacrospinous ligament fixation for pelvic organ prolapse.

INTRODUCTION AND HYPOTHESIS: This study aimed to compare anterior sacrospinous ligament fixation (SSLF) with the standard posterior SSLF concerning complications and outcomes in patients with apical compartment pelvic organ prolapse (POP). METHODS: This is an observational descriptive study using prospective data collected from two referral urogynecological centers. The study cohort represents all 135 women in our prospective study who underwent anterior approach bilateral anterior or unilateral posterior meshless SSLF from January 2018 to December 2020 using the PFDI-20 questionnaire and the POP quantification (POP-Q) system pre- and postoperatively. The objective success rate was assessed by the number of POP recurrence cases and total vaginal length (TVL) postoperatively. Patients were followed up for at least 6 months (range, 6 to 18 months). Data were analyzed using SPSS version 21. P < 0.05 was considered statistically significant. RESULTS: Sixty-seven (49.6%) patients underwent posterior SSLF, and 68 (50.4%) underwent anterior SSLF. The mean age of patients was 58.2 ± 9.7 and 64.9 ± 11.6, respectively (P < 0.001). Most patients who underwent the posterior approach had stage III apical prolapse (74.6%), while 65.5% of those who underwent anterior SSLF had stage II apical prolapse (P < 0.001). Following the treatment, no significant difference was detected between these two vaginal approaches in terms of women's satisfaction rate (P > 0.05). One case of postoperative recurrence was found in the posterior group, which ultimately led to surgical retreatment. There were no major intra- or postoperative complications in the groups. Postoperative TVL was higher in the anterior SSLF group (P < 0.001). The postoperative POPDI-6, CRADI-8, UDI-6, and PFDI-20 decreased significantly compared to preoperative status in both groups (P < 0.001). CONCLUSION: It appears that the anterior SSLF approach can be regarded as effective as the posterior approach in the management of apical POP. Therefore, the proper surgical technique can be chosen according to the surgeon's expertise and other compartment's prolapse status.

Sacral neuromodulation in patients with detrusor underactivity: Is biological sex an indicator?

OBJECTIVES: This study aimed to report sacral neuromodulation (SNM) outcomes in detrusor underactivity (DU). METHODS: A multicentric, multinational, retrospective case series was conducted between March 2017 and June 2021 in three different referral centers. Initial test phase stimulation included either a percutaneous nerve evaluation (PNE) or an advanced lead evaluation test phase (ALTP) before permanent SNM implantation. The test phases were performed under local anesthesia, either in the outpatient (PNE) or operating room (ALTP), in the prone position, which was implanted in the third or fourth sacral foramina under fluoroscopic guidance. Patients with favorable response to the initial test phase during the first 2 weeks underwent the implantable pulse generator (IPG) implantation (Medtronic neurostimulation generator device InterStim™). Favorable response was defined as ≥ 50% improvement in symptoms, frequency of clean intermittent catheterization (CIC) and/or decrease in postvoid residual (PVR), increase in voided volume, or improvement in bladder voiding efficiency (BVE) based on the bladder diary. RESULTS: Fifty-eight patients were recruited with a mean age of 39.95 ± 15.28 years. Among the 58 cases, 36 (62.1%) patients responded to the initial stage. Of these, 12 patients (30.8%) with non-neurogenic etiology and nine patients (52.9%) with neurologic etiology did not respond to the initial test phase; thus, they did not undergo full implantation (p = 0.141). Voided volume, PVR, and the median maximum flow rate (Qmax) improved significantly (p < 0.001) in both sexes; however, there was no statistical difference between both genders. Most female cases (78.3%), and nearly half of the men (51.4%), responded to the test phase and were candidates for the IPG phase. Among the 35 cases who underwent IPG, 27 patients (72.2% of males, and 77.8% of females; p = 0.700) had a favorable response to IPG. 46.6% of patients had a successful outcome at the end of the study. CONCLUSION: This multicentric study showed that SNM effectively and safely provided symptom improvement in refractory DU in males similar to females which is an important finding as previously it has been suggested that SNM works better in nonobstructive urinary retention in women and not in women.

Translation and validation of the Persian ICIQ bladder diary.

INTRODUCTION AND HYPOTHESIS: The objective was to translate the International Consultation of Incontinence Questionnaire (ICIQ) bladder diary into Persian and validate it among the Iranian population with lower urinary tract symptoms. METHODS: After obtaining permission from the ICIQ group to translate the ICIQ bladder diary into Persian, we translated, back-translated it, and developed a Persian ICIQ bladder diary. Then, we evaluated its reliability and validity virtually via social media owing to some limitations caused by the COVID-19 pandemic. We calculated the content validity index (CVI) and content validity ratio (CVR) quantitatively. RESULTS: Thirty-nine participants completed the final version of the ICIQ bladder diary. Most of the participants were female (76.3%). For face validity, we interviewed 10 participants. Most of them considered it easy to complete the bladder diary, using a 500-ml measuring cup. Ten experts' panel determined the CVI, and the CVR. All ICIQ bladder diary criteria gained a high score, and all experts believed that all criteria of the diary were essential for patient evaluation (CVI: 0.89 to 1). Cronbach's alpha coefficient in all diary parameters was greater than 0.80 indicating high internal consistency. The test-retest reliability by intra-class correlation coefficients (ICC) for each diary parameters showed a high score indicating good agreement between the first and second test diaries. CONCLUSION: The Persian ICIQ bladder diary demonstrates good stability and strong content validity among the Iranian population with lower urinary tract symptoms.

Misconduct in research integrity: Assessment the quality of systematic reviews in Cochrane urological cancer review group.

OBJECTIVE: Cochrane Library provides a powerful and authoritative database to aid medical decision making. We aimed to evaluate the quality of clinical trials and systematic reviews recorded in the Cochrane urology cancers group. MATERIAL AND METHODS: This analytic cross-sectional study was conducted on 44 published systematic reviews of the Cochrane urology group which were published until May 2020. In the current study, we selected the urological cancer reviews. All types of biases in the understudied randomized controlled trials (RCTs) or quasi-RCTs of these systematic reviews were evaluated using the Cochrane appraisal checklist. We also separated and stratified the types of biases in the included studies. In addition, the quality of systematic reviews was assessed using the Joanna Briggs Institute (JBI) appraisal checklist. RESULTS: A total of 44 systematic reviews and their understudied 340 RCTs were evaluated. On the basis of the JBI appraisal checklist results, 93.2% of systematic reviews had high quality. In terms of the quality of understudied RCTs in these reviews, the common prevalent risk of bias of the understudied RCTs or quasi- RCTs was unclear selection bias (allocation concealment and random sequence generation). The highest risk of bias was seen in the blinding of participants and personnel (performance bias). CONCLUSION: Although most Cochrane urological cancer reviews had high quality, performance bias was the highest one in their understudied RCTs. Regarding it and considering the increasing unclear risk of detection, attrition, and reporting biases, it is obvious that they have structural deficiencies; therefore, it is recommended to observe integrity principles for preventing research misconduct.

Predicting the Postoperative Outcome of Percutaneous Nephrolithotomy with Machine Learning System: Software Validation and Comparative Analysis with Guy's Stone Score and the CROES Nomogram.

Purpose: To validate the output of a machine learning-based software as an intelligible interface for predicting multiple outcomes after percutaneous nephrolithotomy (PCNL). We compared the performance of this system with Guy's stone score (GSS) and the Clinical Research Office of Endourological Society (CROES) nomogram. Patients and Methods: Data from 146 adult patients (87 males, 59%) who underwent PCNL at our institute were used. To validate the system, accuracy of the software for predicting each postoperative outcome was compared with the actual outcome. Similarly, preoperative data were analyzed with GSS and CROES nomograms to determine stone-free status as predicted by these nomograms. A receiver operating characteristic (ROC) curve was generated for each scoring system, and the area under the ROC curve (AUC) was calculated and used to assess the predictive performance of all three models. Results: Overall stone-free rate was 72.6% (106/146). Forty of 146 patients (27.4%) were scheduled for 42 ancillary procedures (extracorporeal shockwave lithotripsy [SWL] [n = 31] or repeat PCNL [n = 11]) to manage residual renal stones. Overall, the machine learning system predicted the PCNL outcomes with an accuracy ranging between 80% and 95.1%. For predicting the stone-free status, the AUC for the software (0.915) was significantly larger than the AUC for GSS (0.615) or CROES nomograms (0.621) (p < 0.001). Conclusion: At the internal institutional level, the machine learning-based software was a promising tool for recording, processing, and predicting outcomes after PCNL. Validation of this system against an external dataset is highly recommended before its widespread application.

Primary renal pelvis and ureter squamous cell carcinoma (SCC): a rare case report and review of literature.

Primary renal squamous cell carcinoma (SCC) is a very rare upper urinary tract neoplasm. Renal SCC has a poor prognosis because it usually presents in advanced stages. We report a 64-year-old woman with a right paravertebral mass; after right radical nephroureterectomy and salpingo-oophorectomy, pathologic examination revealed primary SCC.