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Fischer N, Göke F, Kahl P, Splittstößer V, Lankat-Buttgereit B, Müller SC, Ellinger J. Programmed cell death protein 4 expression in renal cell carcinoma, penile carcinoma and testicular germ cell cancer. World J Clin Urol 2014; 3:351-357. [DOI: 10.5410/wjcu.v3.i3.351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 04/25/2014] [Accepted: 08/29/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the expression of programmed cell death 4 (Pdcd4) tumor suppressor gene in tissue specimen of renal cell carcinoma (RCC), testicular germ cell cancer and penile cancer.
METHODS: Pdcd4 expression was studied using immunohistochemistry in 188 cases of RCC and 28 controls (including 9 oncocytoma); in 74 cases of penile carcinoma (including 17 metastatic tissue samples) and 26 controls; in 11 cases of seminoma, in 14 cases of non-seminoma and 5 controls.
RESULTS: Control tissues exhibited strong core and cytoplasmatic Pdcd4 staining. In contrast, core and cytoplasmatic Pdcd4 levels were significantly decreased in cancer tissues.
CONCLUSION: Our data support a role for Pdcd4 (down-) regulation in urologic tumors. Interestingly, Pdcd4 expression seem to be a potential diagnostic marker for renal or penile tumors.
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Shadpour P, Modaresi SS, Maghsoudi R, Roohinezhad R. Percutaneous nephrolithotomy vs laparoscopic ureterolithotomy for large upper ureteral stone: A review article. World J Clin Urol 2014; 3:336-339. [DOI: 10.5410/wjcu.v3.i3.336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 08/29/2014] [Accepted: 10/10/2014] [Indexed: 02/06/2023] Open
Abstract
To investigate the best treatment option for large upper ureteral stone, percutaneous nephrolithotomy or laparoscopic ureterolithotomy. We searched three key word of upper ureteral stone, laparoscopic ureterolithotomy, percutaneous nephrolithotomy in PubMed, Scopus and Ebsco. We found approximately twenty suitable articles about this subject since January 1980 until January 2014. All articles studies and reviewed meticulously and brief review of these articles was written and some Ideas of experts was added. In many studies, it is suggested that success rate and complications of laparoscopic ureterolithotomy and percutaneous nephrolithotomy are the same, but percutaneous nephrolithotomy has less hospital stay time, duration of surgery and it is more cost effective. Overall it seems that percutaneous nephrolithotomy for treatment of upper ureteral stones is preferable rather than laparoscopic ureterolitothomy
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Obinata D, Fujiwara K, Yamaguchi K, Takayama KI, Urano T, Nagase H, Inoue S, Takahashi S, Fukuda N. Review of novel therapeutic medicines targeting androgen signaling in castration-resistant prostate cancer. World J Clin Urol 2014; 3:264-271. [DOI: 10.5410/wjcu.v3.i3.264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 06/26/2014] [Accepted: 07/29/2014] [Indexed: 02/06/2023] Open
Abstract
Prostate cancer is the most common male malignant neoplasm. Androgens and the androgen receptor (AR) play a key role in the onset and progression of prostate cancer. The expression of the AR is still preserved in the majority of patients with castration-resistant prostate cancer (CRPC). CRPC is considered to be induced by the following mechanisms: (1) sustained AR activation by enhancing intracellular conversion of adrenal androgens to dehydrotestosterone via a de novo route; (2) AR hypersensitivity; (3) promiscuous activation of AR signaling; and (4) outlaw pathways. Recent advances in the treatment of CRPC include novel medicines targeting AR signaling pathways. In addition, functional molecular studies have shown that some of the AR-regulated genes and AR coregulators are prognostic markers and potential therapeutic targets for prostate cancer, particularly in the castration-resistant state. Therefore, identification of the AR signaling pathways responsible for establishment of CRPC is critical for developing new strategies for the treatment of CRPC.
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Antonelli A, Bisleri G, Mittino I, Moggi A, Muneretto C, Cunico SC, Simeone C. Cardiopulmonary bypass with brain perfusion for renal cell carcinoma with caval thrombosis. World J Clin Urol 2014; 3:127-133. [DOI: 10.5410/wjcu.v3.i2.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 05/08/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To compare a modified technique preserving brain circulation during cardiopulmonary by-pass (CPB) for radical nephrectomy and caval thrombectomy, to the standard technique.
METHODS: Retrospective evaluation of an institutional database that collects the data of patients submitted to nephrectomy and removal of caval thrombosis with CPB since 1998. In period between 1998 and 2007, CPB followed a standard technique (group sCPB); then, since 2008, a variation in the perfusional technique was introduced, allowing the anterograde perfusion of brain circulation during circulatory arrest (group CPB + BP) with the aim to reduce the risk of ischemic damage to the brain and also the need of deeper hypothermia. Patients (age, gender, comorbidity) and tumor characteristics (side, histology, staging, level of thrombosis), as well as parameters of CPB (times of CPB, aortic clamping and circulatory arrest, minimum temperature reached during hypothermia), intra- and perioperative morbidity (complications in general, bleeding, renal and hepatic failure) and mortality were analyzed and compared between 2 groups (sCPB vs CPB + BP)
RESULTS: The data of 24 patients, respectively 9 in sCPB group and 15 in CPB + BP group, have been reviewed. No differences in the characteristics of patients and tumors were observed. Only 1 (11.1%) and 4 (26.0%) of sCPB and CPB + BP patients, respectively, didn’t experience any event of complication. In sCPB group were observed 15 events of complication (5 of which Clavien ≥ 3, 33% of the events), for a mean of 1.66 events/patient; 29 events (10 Clavien ≥ 3, 30.3%), in the CPB + BP group, for a mean of 2.1 events/patient. 1 (11.1%) and 2 (14.2%) deaths occurred, respectively. For patients submitted to CPB + BP, the minimum temperature reached was significantly higher (29.9 °C vs 26.4 °C, P = 0.001), the time of circulatory arrest was longer (17.4 min vs 13.7 min, NS), but the overall time of CPB shorter (76.1 min vs 92.5 min, NS), albeit these latter differences were not statistically significant. No differences in terms of bleeding, impairment of renal function (post-operative Cr > 2.0 mg/dL respectively in 44.4% vs 35.7% of cases, in the two groups, NS) or hepatic insufficiency (post-operative GOT or GPT > 50 U/L respectively in 44.4% and 66.7% of patients, NS) were noted. Average follow-up was 51 mo in patients undergoing a sCPB and 12 mo in the CPB + BP group of patients; at the last follow-up, 7 patients had died of progression of the condition (4 in the first group and 3 in the second group, respectively), 7 were alive in progression and 10 had no evidence of the disease.
CONCLUSION: The perfusional technique that maintains brain perfusion during circulatory arrest limits hypothermia and lowers time of CPB, without rising the risk of renal and hepatic injury.
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Wagmaister J, Kocherov S, Chertin B. Laparoscopic single site surgery: Experience in pediatric urology. World J Clin Urol 2014; 3:119-126. [DOI: 10.5410/wjcu.v3.i2.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 03/14/2014] [Indexed: 02/06/2023] Open
Abstract
Laparoendoscopic single-site surgery (LESS) has been developed to benefit patients by enabling surgeons to perform scarless surgery. In this review we aimed to summarize and critically analyze the available evidence on the current status and future prospects for LESS in pediatric urology, with special emphasis on our experience with LESS in children. The clinical data available clearly demonstrate that LESS can safely and effectively be performed in a variety of pediatric urology settings. As clinical experience increases, expanding indications are expected to be documented and the efficacy of the procedure to improve. So far, the quality of evidence of all available studies remains low; mostly being small case series or case-control studies from selected centers. Thus, the only objective benefit of LESS remains improved cosmetic outcome. Prospective randomized studies are awaited to determine which LESS procedures will be established and which are unlikely to stand the test of time. Technological advances hold promise to minimize the challenging technical nature of scarless surgery. In this respect, robotics may be a driving force in the development of LESS.
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Qu CY, Xu DF. Comprehensive urodynamics: Being devoted to clinical urologic practice. World J Clin Urol 2014; 3:96-112. [DOI: 10.5410/wjcu.v3.i2.96] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 05/12/2014] [Accepted: 06/16/2014] [Indexed: 02/06/2023] Open
Abstract
As a combined electrophysiological system for evaluating the lower urinary tract (LUT), comprehensive urodynamics (UDS) aims at duplicating patient’s micturition process, either normal or abnormal, and further seeking for possible causative origin, either neurogenic or non-neurogenic, in order to guide treatment. Through thorough analysis, some so-called cut-off values, for example, bladder outlet obstruction (BOO) degree or dyssynergic degree between the detrusor and sphincter, could be gained; however, in most cases, their qualitative description, such as stress urinary incontinence, idiopathic detrusor underactivity (DUA), detrusor overactivity (IDO), low compliance, and idiopathic sphincter overactivity (ISO), is more preferable and important. In aged neurologically intact male patients with symptoms of the LUT (LUTS) including benign prostatic hyperplasia, a combined UDS system, which coupled BOO with compliance, was constructed. The patients may be categorized into one of the seven subgroups, including equivocal or mild BOO with sphincter synergia with or without IDO (pattern A), equivocal or mild BOO with ISO (B), classic BOO with sphincter synergia (C) or ISO (D), BOO with only low compliance (E), BOO with both DUA and low compliance (F), and potential BOO with DUA (G). This new system can be used to optimize diagnosis and treatment according to a derived guideline diagram.
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Lett B, Sivanathan KN, Coates PT. Mesenchymal stem cells for kidney transplantation. World J Clin Urol 2014; 3:87-95. [DOI: 10.5410/wjcu.v3.i2.87] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 06/06/2014] [Accepted: 06/27/2014] [Indexed: 02/06/2023] Open
Abstract
The long term consequence of immunosuppressive therapy in kidney transplantation has prompted investigation of alternative means to modify the immune response to the allograft. Cell based therapies are potentially attractive as they may provide a long lasting immunomodulatory effect, may repair tissues and reduce the necessity to take immunosuppressive drug therapy. Of the current cell therapies, mesenchymal stem cells have now been trialled in small numbers of human kidney transplantation with apparent safety and potential efficacy. Many issues however need to be resolved before these cells will become mainstays of transplant immunosuppression including ex vivo modification to enhance immunomodulatory properties, cell number, route and frequency of administration as well as cellular source of origin.
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Kawada N, Isaka Y, Rakugi H, Moriyama T. SCAD syndrome: A vicious cycle of kidney stones, CKD, and AciDosis. World J Clin Urol 2014; 3:113-118. [DOI: 10.5410/wjcu.v3.i2.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2014] [Revised: 05/23/2014] [Accepted: 06/20/2014] [Indexed: 02/06/2023] Open
Abstract
Cumulative evidence has shown that kidney stone formers are at high risk for developing end-stage renal disease (ESRD) and cardiovascular disease. The aim of this mini-review is to summarize the present knowledge about the close relationships among kidney stone formation, chronic kidney disease (CKD), and plasma and urine acidosis (SCAD). Part of the cause of the positive relationships between higher risk of developing ESRD and cardiovascular diseases in stone formers may be explained by inflammation and cell death due to the components of kidney stones. In CKD patients, acidic urine and loss of anti-crystallization factors may cause stone formation. Acidosis can promote tissue inflammation and may affect vascular tone. Correction of plasma and urine acidosis may improve renal and cardiovascular outcome of stone formers and CKD patients. More intensive and long-term interventions, which include correction of plasma and urine pH in patients with reduced renal function and correction of urine pH in patients with normal renal function, may be considered in treating patients with SCAD syndrome.
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84
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Bertó RR, López-Acón JD, Marco SL, Jurado DGO, Oliva FD, Baenas MAC, Tormo FB. Penile prosthesis: Patient satisfaction, use and preference for malleable vs inflatable. World J Clin Urol 2014; 3:134-138. [DOI: 10.5410/wjcu.v3.i2.134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 06/05/2014] [Accepted: 06/27/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate and compare long-term patient satisfaction and use after either malleable penile prosthesis (MPP) or inflatable penile prosthesis (IPP) implantation.
METHODS: we present a retrospective unicenter study of 108 patients implanted with either 2 or 3-piece American Medical System™ (AMS™) or Coloplast™ inflatable penile prosthesis (AMS 700CX™, AMS 700CXR™, AMS Ambicor™ or Coloplast TITAN™) or malleable (AMS Spectra™ or Coloplast Genesis™) in our Centre between 1993 and 2011. We collected data from the medical record including follow-up, age and type of prosthesis. We used a four-question telephone survey designed ad hoc by urologist in our Department, with three multiple choice questions and a grading answer. After verbal consent was obtained, proposed questions concerned global satisfaction regarding to the procedure, quality of sexual intercourses graded from 0 to 10, frequency of sexual intercourse and about undergoing the same procedure again. SPSS™ version 20.0 was used for the descriptive analysis of the data.
RESULTS: Sixty seven (64%) patients underwent a MPP and 41 (36%) an IPP. The mean age was 52.6 ± 3.6 years in the MPP group and 57.2 ± 2.8 years in the IPP group (P = 0.02). Total respond rate was 55.5% (60/108). Twenty six out of 33 MPP patients (78.9%) and 19 of the 27 IPP subjects (70.3%) were satisfied or very satisfied with the procedure. The quality of sexual intercourse was rated 7.13 ± 0.39 points in the MPP group and 6.16 ± 0.47 points in the IPP group. Frequency of sexual intercourse was 1 or more times per week in 15 (46.9%) patients with MPP and in 12 (46.1%) of the IPP patients. Twenty-eight (84.9%) patients who received a MPP would undergo the procedure for the same device again as well as 24 (88.9%) of the IPP group. There were no statistical differences between groups regarding the four items in the survey.
CONCLUSION: Patients show high satisfaction rate and no statistical differences exist regarding to global satisfaction, use of the device and quality of sexual intercourse depending on the type of penile prosthesis.
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Bryniarski P, Miernik A, Schoenthaler M, Zyczkowski M, Taborowski P, Paradysz A. Kidney stones over 2 cm in diameter-between guidelines and individual approach. World J Clin Urol 2014; 3:81-86. [DOI: 10.5410/wjcu.v3.i2.81] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 04/25/2014] [Accepted: 05/29/2014] [Indexed: 02/06/2023] Open
Abstract
The prevalence of urolithiasis has been observed to increase during last decades. Kidney stones over 2 cm in diameter are the common urologic problem. European and American Associations of Urology has published guidelines on Urolithiasis and presented the most effective tools to treat large stones. On the other hand many experienced endourologic centres choose other modalities from their armamentarium. All treatment methods are characterized by their efficacy and safety which are usually inversely proportional. It is crucial for patients and physicians to find a golden mean. Percutaneous lithotripsy is still considered treatment of choice with more than 95% efficacy. Less invasive retrograde intrarenal surgery is also less effective, but burdened with lower complication rate. Extracorporeal shockwave lithotripsy is feasible in paediatric patients with acceptable stone free rates. Open surgery (pylolithotomy and anatrophic nephrolithotomy) are almost obsolete techniques. All methods have their pros and cons. Physicians should share decisions regarding treatment modalities with patients.
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86
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Riedinger CB, Tobert CM, Lane BR. Laparoendoscopic single site, laparoscopic or open surgery for adrenal tumors: Selecting the optimal approach. World J Clin Urol 2014; 3:54-65. [DOI: 10.5410/wjcu.v3.i2.54] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 03/07/2014] [Accepted: 04/03/2014] [Indexed: 02/06/2023] Open
Abstract
Numerous surgical modalities are available to treat adrenal lesions. Minimally-invasive approaches for adrenalectomy are indicated in most circumstances, and new evidence continues to be accumulated. In this context, current indications for open surgical adrenalectomy (OS-A), minimally-invasive adrenalectomy (MI-A), and laparoendoscopic single-site adrenalectomy (LESS-A) remain unclear. A comprehensive English-language literature review was performed using MEDLINE/PubMED to identify articles and guidelines pertinent to the surgical management of adrenal tumors. A comprehensive chart review was performed for three illustrative cases. Clinical recommendations were generated based on relevant literature and the expertise of the investigator group. MI-A offers advantages over OS-A in properly selected patients, who experience fewer complications, lower blood loss, and shorter hospital stays. Robot-assisted laparoscopic and retroperitoneoscopic adrenalectomy may offer advantages over transperitoneal surgery, and LESS-A may be an even less-invasive option that will require further evaluation. MI-A remains the surgical treatment of choice for most adrenal lesions. Tumor size and stage are the primary indications for selecting alternative treatment modalities. OS-A remains the gold standard for large tumors (> 10 cm) and suspected or known advanced stage malignancy. LESS-A appears to be an appropriate initial approach for small tumors (< 4-5 cm), including pheochromocytoma and isolated adrenal metastases.
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87
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Renterghem KV, Rosette JJMCHDL, Thijs H, Wisanto E, Achten R, Ory JP, Koeveringe GV. Alternative mechanisms for prostate-specific antigen elevation: A prospective analysis of 222 transurethral resections of prostate patients. World J Clin Urol 2014; 3:144-151. [DOI: 10.5410/wjcu.v3.i2.144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 02/14/2014] [Accepted: 03/12/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the relationship between prostate-specific antigen (PSA) levels and (1) bladder outlet obstruction (BOO) and (2) the severity of prostate inflammation.
METHODS: Two hundred and twenty-two consecutive patients undergoing transurethral resection of the prostate (TURP) were prospectively included. Patients with proven urinary tract infection and/or known prostate cancer were excluded. PSA levels, International Prostate Symptoms Score (IPSS), prostate weight, post residual volume and pressure flow parameters were determined. A histopathological assessment of the presence and severity of inflammation was also performed.
RESULTS: Patients had a mean age of 69.1 ± 8.6 years (45-90 years), with mean preoperative PSA levels of 4.7 ± 5.4 ng/mL (0.2-32.5 ng/mL) and IPSS of 15.7 ± 6.9 (0-32). Mean PdetQmax was 96.3 ± 34.4 cmH2O (10-220 cmH2O). The mean resected prostate weight was 39.4 ± 27.3 g (3-189 g). Correlations were observed between PSA (logarithmic) and resected prostate weight (r = 0.54; P < 0.001), PSA (logarithmic) and PdetQmax (r = 0.17; P = 0.032), and resected prostate weight and PdetQmax (r = 0.39; P < 0.001). Furthermore, low correlations were observed between PSA (logarithmic) and active (r = 0.21; P < 0.0001) and chronic (r = 0.19; P = 0.005) inflammation.
CONCLUSION: In this study we showed a correlation between BOO (PdetQmax) and PSA (logarithmic). Furthermore, we demonstrated a weak correlation between PSA (logarithmic) and active as well as chronic prostatic inflammation.
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Endo T, Kamiya N, Suzuki H, Oka R, Lee FC, Utsumi T, Yano M, Kamijima S, Kawamura K, Imamoto T, Ichikawa T. Bone markers predict survival in castration-resistant prostate cancer patients treated with docetaxel. World J Clin Urol 2014; 3:139-143. [DOI: 10.5410/wjcu.v3.i2.139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 05/11/2014] [Accepted: 06/18/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the relationship between clinicopathological features and bone turnover markers in castration-resistant prostate cancer (CRPC) patients treated with docetaxel.
METHODS: Thirty-three patients were enrolled in this study. Serum levels of carboxyterminal cross-linked telopeptide of type 1 collagen generated by metalloproteinases (1CTP) and alkaline phosphatase (ALP) were measured at the start of docetaxel chemotherapy. We examined the relationship between clinicopathological features and serum levels of 1CTP and ALP levels in CRPC patients treated with docetaxel.
RESULTS: For the total patient group, the mean ± standard deviation (SD) values for docetaxel chemotherapy dose, dose intensity, dosage interval, and number of cycles were 59.3 ± 10.6 mg/m2, 13.9 ± 5.2 mg/m2 per week, 4.7 ± 1.2 wk, and 11.2 ± 7.4, respectively. Fourteen patients died from prostate cancer. Patients were divided into two groups according to mean + SD of serum 1CTP (8.2 ng/mL) and ALP (538.2 IU/L) levels at the start of docetaxel chemotherapy. Patients with lower levels of serum 1CTP and ALP had significantly better survivals than those with higher serum levels (P < 0.05).
CONCLUSION: Serum levels of 1CTP and ALP are predictors of survival in patients with CRPC who are treated with docetaxel.
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Pocsfalvi G, Stanly C, Vilasi A, Fiume I, Tatè R, Capasso G. Employing extracellular vesicles for non-invasive renal monitoring: A captivating prospect. World J Clin Urol 2014; 3:66-80. [DOI: 10.5410/wjcu.v3.i2.66] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 06/09/2014] [Accepted: 06/27/2014] [Indexed: 02/06/2023] Open
Abstract
Extracellular vesicles (EVs) are fascinating nano-sized subjects extensively studied over the recent years across several disparate disciplines. EVs are endlessly secreted into the extracellular microenvironment by most cell types under physiological and pathological conditions. EVs encompass a variety of molecular constituents from their cell of origin, such as lipids, cell specific proteins and RNAs, thus constituting an informative resource for studying molecular events at the cellular level. There are three main classes of EVs classified based on their size, content, biogenesis and biological functions: exosomes, shedding microvesicles and apoptotic bodies. Besides cell culture supernatants, biological fluids have also been shown to contain different types of EVs. Amongst the various body fluids, the study of urinary extracellular vesicles (uEVs) as a source of candidate biomarkers gained much attention, since: (1) urine can be non-invasively collected in large amounts; and (2) the isolated uEVs are stable for a relatively long period of time. Here, we review the important aspects of urinary extracellular vesicles which are fast gaining attention as a promising future tool for the non-invasive monitoring of urinary tract. Recent advancements in the purification and analysis of uEVs and collection of their constituents in rapidly developing public databases, allow their better exploitation in molecular diagnostics. As a result, a growing number of studies have shown that changes in expression profile at the RNA and/or protein levels of uEVs reveal the molecular architectures of underlying key pathophysiological events of different clinically important diseases with kidney involvement.
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90
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Khajehei M. Why is there a need for an interdisciplinary approach to assess erectile dysfunction? World J Clin Urol 2014; 3:1-8. [DOI: 10.5410/wjcu.v3.i1.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Accepted: 12/16/2013] [Indexed: 02/06/2023] Open
Abstract
Erectile dysfunction is a prevalent complaint among men. The majority of patients suffering erectile dysfunction exhibit various risk factors of vascular diseases. Erectile dysfunction used to be recognised as one of the consequences of vascular diseases in patients suffering heart attack or myocardial infarction. During the last decade, however, the role of endothelial dysfunction in the occurrence of erectile dysfunction has been signified, and it has been suggested that erectile dysfunction may not be simply a consequence of vascular diseases but an indicator of future vascular problems. Erectile dysfunction has been known as “the tip of iceberg” of a generalised vascular dysfunction, which typically happens before serious vascular problems. Considerable evidence shows a link between erectile dysfunction and vascular disorders. Several theories have been considered for the association between erectile dysfunction and vascular diseases. One of them is the “artery size” theory focusing on the differences between the diameter of the penile artery and other arteries. Another theory is based on “endothelial dysfunction”, which highlights inappropriate vasoconstriction as a cause of erectile dysfunction and vascular diseases. “Age” has also been reported to have pivotal role in the development of vascular dysfunction resulting in erectile dysfunction and ultimately vascular diseases. Another theory explaining the pathophysiology of erectile dysfunction and its relationship with vascular diseases focuses on the formation of atherosclerosis plaques. This article endeavours to review the current literature and discuss why a multidisciplinary approach is needed while assessing erectile dysfunction.
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Verze P, Arcaniolo D, Cai T, Franco M, Rocca RL, Acquaviva M, Spirito L, Bochorishvili A, Mirone V. Systematic review of the non surgical management of Peyronie's disease. World J Clin Urol 2014; 3:31-37. [DOI: 10.5410/wjcu.v3.i1.31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 01/15/2014] [Accepted: 02/18/2014] [Indexed: 02/06/2023] Open
Abstract
This systematic review shows the “Status quo” on medical treatment for Peyronie’s disease (PD). PD is a connective tissue disorder, characterised by the formation of a fibrotic lesion or plaque in the tunica albuginea, which leads to penile deformity. The aetiology of PD is unknown. Nowadays the most widely accepted hypothesis proposed by Gonzalez-Cadavid et al, is repetitive microvascular injury or trauma to the tunica albuginea. Physicians have proposed several medical alternatives for treatment of this disease with few effective results. Nevertheless, as of today nonsurgical options are currently available, and some of them are able to stabilize or even reduce deformity while improving pain relief and sexual function. A systematic literature search throughout the Medline database was carried out. The controlled vocabulary of the medical subject headings database employs the specific term “penile induratio” for PD. A total of 50 articles on PD were found. Studies were selected based on clinical relevance. The recommended standard of care for PD involves an initial treatment in the acute phase. Several non-operative treatment options have been used. Unfortunately no further substantial, quality evidence on the use of medical therapy currently exits. There is, however, an increasingly enhanced interest in this disorder and basic scientific and clinical research will eventually lead to a more effective methodology to study the disease.
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Karunasinghe N, Bishop K, Murray P, Xu Y, Goudie M, Ng L, Zhu S, Han DY, Ferguson LR, Masters J, Benjamin B, Holmes M. Role of β-microseminoprotein from prostate cancer initiation to recurrence: A mini-review. World J Clin Urol 2014; 3:20-30. [DOI: 10.5410/wjcu.v3.i1.20] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 12/19/2013] [Accepted: 02/18/2014] [Indexed: 02/06/2023] Open
Abstract
Medline/Pubmed articles relevant to this topic were considered using the search terms β-microseminoprotein, MSMB, prostate secretory protein of 94 amino acids and PSP94. Full articles were retrieved when the abstract was considered relevant. In addition, other data related to this topic including our own are discussed. Summary of findings-β-microseminoprotein (MSMB) is increasingly being considered as a marker for prostate cancer, as reduced levels have been associated with the disease. Here we review various aspects of this protein including its biological and physiological variants, binding proteins and immune modulation; its importance as a marker for biochemical recurrence of prostate cancer; prostate cancer related splice variants and its therapeutic utility. Two of the most important properties of MSMB are related to anticancer functions and immune modulation. Predominant expression of two (short and full-length) splice variants of MSMB has been observed from normal prostate and several other tissues. In benign prostate hyperplasia the short isoform is dominant, constituting 98% of this isoform, whereas in prostate cancer 96% constitute the full-length isoform. The MSMB promoter single nucleotide polymorphism rs10993994 with the C allele functions as an activated cyclic adenosine monophosphate response element binding protein binding site. This C variant of rs10993994 could be responsible for the production of splice variants under variable conditions. MSMB has binding motifs to a few known proteins including immunoglobulin G and several Cysteine-rich secretory proteins family proteins. MSMB bound to these proteins is considered as immune modulating. Use of MSMB as a urinary marker for detecting aggressive prostate cancers that could resist radiation and surgical treatments, seems possible, but needs further investigation. The ratio of MSMB splice variants could also be a possible approach in understanding prostate cancers, with higher ratios indicating severe disease.
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Umbehr MH, Poyet C, Donati OF, Müntener M. Role of magnetic resonance imaging in the diagnostic work up of clinical localized prostate cancer: A review. World J Clin Urol 2014; 3:44-46. [DOI: 10.5410/wjcu.v3.i1.44] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2013] [Revised: 12/24/2013] [Accepted: 01/20/2014] [Indexed: 02/06/2023] Open
Abstract
Imaging plays an increasingly important role in the work up of prostate cancer (PCa) and magnetic resonance imaging (MRI) is generally accepted as the most accurate and promising imaging modality in the local staging of PCa due to its high spatial resolution and excellent soft tissue contrast. The quality and performance of MRI of the prostate has improved dramatically during the last decade. Mainly, the combination of morphological information and functional information on cell density, tissue perfusion or metabolism as provided in multi-parametric prostate MRI (mpMRI) has led to a substantial increase in lesion detection and characterization. The correlation between functional parameters as provided by MRI and the aggressiveness of PCa as determined by the Gleason Score may help in differentiating clinically significant from indolent PCa non-invasively. Besides these pros, radiologists are confronted with an immense amount of information and standardized acquisition, interpretation and reporting of mpMRI is not yet a reality. Furthermore, prostate MRI availability is still limited to high volume centers in many countries; hence, it is not yet a routine tool in common daily practice. Hence, development of guidelines for standardized acquisition, interpretation and reporting of prostate MRI exams is urgently needed in order to provide useful information for treating clinicians. Preferably, multi-centric clinical studies comparing MRI findings to step-section histological specimens are mandatory during the coming years. Furthermore, simplification of the acquisition must be achieved in order to make this imaging modality applicable for daily use in common uro-radiological practice.
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Cai T, Verze P, Mazzoli S, Pisano F, Tiscione D, Gontero P, Mirone V, Bartoletti R. Chlamydial infections in urological disease: A challenging management. World J Clin Urol 2014; 3:38-43. [DOI: 10.5410/wjcu.v3.i1.38] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 12/08/2013] [Accepted: 02/18/2014] [Indexed: 02/06/2023] Open
Abstract
Chlamydia trachomatis (Ct) infections are the most prevalent sexually transmitted bacterial infections worldwide, causing considerable morbidity and socio-economic problems. Moreover, Ct infections are asymptomatic in approximately 50% of infected men and 70% of infected women, with the risk for reproductive tract sequelae both in women and men. Recent studies have improved the comprehension of this infection and its natural history, also highlighting its role in decreasing male fertility. Severe complications can be avoided only by a proper early diagnosis and appropriate treatment. We reviewed the literature relating to the new findings in the treatment of Ct infection in sexually active young men. Articles from 1960-2012 were identified through a Medline search using the keywords “Chlamydia trachomatis” combined with “urethritis”, “epididymitis”, “prostatitis”, “treatment” or “management”. Currently, several studies have been published about the role of new antibiotic schedules and new associated compounds in order to improve the efficacy in terms of microbiological results and patient quality of life. In particular, several studies stress the fact that Chlamydia is only metabolically active in the host cell and therefore only targeted intracellularly by antibiotics. Even although the standard therapy includes intracellularly-accumulated antibiotics such as tetracyclines or macrolides, recent evidence highlights the role of quinolones. In particular, recent studies highlight the role of prulifloxacin in the treatment of chronic prostatitis for improving the patient’s quality of life and decreasing the IL-8 level. However, future studies should focus on delineating the natural history of recurrent infections, paying particular attention to treatment failures.
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Maines F, Pilotto S, Milella M, Massari F, Vaccaro V, Felici A, Bria E, Tortora G. “Targeting” renal cell carcinoma patients with “targeted” agents: Are we there yet? World J Clin Urol 2014; 3:9-19. [DOI: 10.5410/wjcu.v3.i1.9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Revised: 12/07/2013] [Accepted: 02/18/2014] [Indexed: 02/06/2023] Open
Abstract
The rapid approval of several novel agents, targeting the vascular endothelial growth factor or mammalian target of rapamycin pathways (sunitinib, pazopanib, sorafenib, axitinib, bevacizumab, everolimus, temsirolimus) has given to metastatic renal cell carcinoma (mRCC) patients and their treating physicians many new and effective therapeutic options. The treatment paradigm for these patients is rapidly evolving, with future studies needed to define the optimal sequencing of these new agents. Despite progresses, no validated biomarkers able to predict clinical outcome or useful to guide patient selection for treatment are currently available. Recent studies have suggested that some biomarkers, including cytokines, circulating proangiogenic factors, markers of hypoxia or targets of signaling pathways are potentially promising prognostic or predictive factors in mRCC. We present an overview of the most recent developments in identifying biomarkers for targeted therapies in advanced RCC.
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Iseki R, Ohori M, Piccorelli A, Yu C, Piccorelli A, Ohno Y, Tachibana M, Kattan MW. Development of a nomogram for predicting a positive repeat prostate biopsy. World J Clin Urol 2014; 3:47-53. [DOI: 10.5410/wjcu.v3.i1.47] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 11/19/2013] [Accepted: 12/16/2013] [Indexed: 02/05/2023] Open
Abstract
AIM: To find risk factors of cancer in patients who had a repeat biopsy and to develop the nomogram using our cohort.
METHODS: Among 3500 patients who had a prostate biopsy over 11 years between 2000 and 2010 at our hospital, we studied a total of 807 repeat biopsy sessions in 459 patients who had at least 1 initial negative biopsy. At each biopsy session, we recorded patient age, number of previous biopsy sessions, number of biopsy cores, number of previously negative biopsy cores, months from the initial biopsy, months from the previous biopsy, serum PSA, PSA slope, digital rectal examination findings, hypoechoic lesions suspicious for a cancer on transrectal ultrasonography, total prostate volume, transitional zone (TZ) volume, PSA density, PSA TZ density and history of high grade prostatic intraepithelial neoplasia (HGPIN) or atypical small acinar proliferation (ASAP). Clinical and pathological variables were correlated with the outcome of repeat biopsies. A nomogram was developed based on logistic regression analyses and calibration was performed.
RESULTS: Overall, 17% of repeat biopsies had a cancer. With receiver operating characteristics analyses, the highest area under the curve (AUC) was obtained based on all available 13 variables, which were age, PSA, digital rectal examination, PSA density, prostate volume, TZ volume, PSA TZ density, cumulative number of biopsy cores, HGPIN, ASAP, months from previous negative biopsy, initial negative biopsy and number of biopsy cores. Based on multivariable logistic regression analysis, a nomogram was constructed with an AUC of 0.74, which was greater than that of any single risk factor. The calibration plot seemed to be good.
CONCLUSION: Our nomogram for predicting a positive repeat biopsy can provide probabilities for cancer and may help clinical judgment on whether to do a repeat prostate biopsy.
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Lukacs S, Tschobotko B, Mukerji G, Vale J, Mazaris E. How to improve a urology outpatient service? A survey of patient satisfaction. World J Clin Urol 2013; 2:46-52. [DOI: 10.5410/wjcu.v2.i3.46] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2013] [Revised: 09/18/2013] [Accepted: 11/03/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate and improve our out-patients department patient satisfaction, provide minimum consultation delay and appropriate consultation duration to meet with targets.
METHODS: We distributed the modified satisfaction with outpatient service (SWOPS) questionnaires developed for use in Irish hospitals by the Health Services Research between August and December 2012. The patient disclosed their age and sex and completed the modified SWOPS questionnaire anonymously. Every patient was eligible to participate in the study who attended any of the Urology Outpatient Clinics. Patients lacking capacity to consent were excluded. Additionally, each patient was only permitted to complete one questionnaire regardless of repeat attendances within the 4 mo study period. The answers to every question were presented as percentages. One-way ANOVA was used to establish whether there was a significant difference in appointment delay and “Overall Satisfaction” on the different clinic days. The unpaired t-test was applied to establish whether “Overall Satisfaction” was affected by diagnosis (benign or malignant). Paired t-test was used to establish whether “Overall Satisfaction” was affected by appointment delay and appointment length.
RESULTS: Three hundred and forty-eight questionnaires were completed with an overall > 65% participation rate. Eighty-one point six percent were male and 18.4% female with a mean age of 65 ± 21 years. Mean delay time was 32 min, which 30.6% stated should be an improvement priority. The delay times for Wednesday (mean 13 min) were significantly (P < 0.05) lower than for other days (mean 36 min). Generally 12-15 min outpatient appointment length is acceptable and adequate for patients as 97.70% suggested, however 31.60% of patients would favour longer duration. Eleven point four nine percent do not want to see different doctors each time, and 31.60% of the patient feel that no change is required. Average satisfaction was 84.65%. There was no significant relationship between satisfaction and clinic day, diagnosis and consultation length, whether the patient was reviewed by a registrar or consultant. Satisfaction was universally high and independent of consultation delay/length and diagnosis. Dissatisfaction in delay times with a significant improvement on Wednesday suggests necessary and achievable improvements. Notably, the Wednesday clinic has less patients per doctor per hour and enforces a 1 patient per 15 min slot with a no over-booking policy.
CONCLUSION: Surveying our patient dissatisfaction would require more frequent audits by clinicians to improve patient satisfaction and to achieve better quality of care.
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Osborn DJ, Dmochowksi R. Safety of synthetic mesh in pelvic surgery. World J Clin Urol 2013; 2:15-19. [DOI: 10.5410/wjcu.v2.i3.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2013] [Revised: 09/13/2013] [Accepted: 10/16/2013] [Indexed: 02/06/2023] Open
Abstract
Mesh in the form of a midurethral sling is an acceptable and generally safe treatment option for stress urinary incontinence in patients who have failed conservative treatment options such as weight loss and pelvic floor muscle training. In patients with pelvic organ prolapse, when outcomes are measured in terms of improvement in postoperative physical exam (anatomic success), many studies have demonstrated that mesh augmented repairs are superior to prolapse repairs not using mesh (native tissue). However, from a symptomatic standpoint, the outcomes of mesh and native tissue repairs are equivalent. This means that even though the physician may see more prolapse on physical exam after native tissue repair, most patients do not perceive this as a problem because their sensation of a vaginal bulge is gone. The vaginal bulge is one of the most common complaints of a patient prior to pelvic organ prolapse repair. Based on interpretation of the available literature, it does not appear that mesh is superior to native tissue repair for anterior (cystocele) and posterior (rectocele) compartment pelvic organ prolapse repair. However, for apical repairs the native tissue repairs are more technically challenging and it appears that suspension of the apex of the vagina with mesh to the sacrum (sacrocolpopexy) may yield better outcomes. Unfortunately, like all mesh surgeries there is a significant risk of mesh complications with sacrocolpopexy. Surgeons should thoroughly counsel their patients about the permanent nature of synthetic mesh and the potential serious complications related to its use. Mesh augmented pelvic organ prolapse repairs carry unique complications that are not present with native tissue repairs and may not provide better outcomes.
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Azadzoi KM, Yang J, Siroky MB. Neural regulation of sexual function in men. World J Clin Urol 2013; 2:32-41. [PMID: 34707982 PMCID: PMC8547275 DOI: 10.5410/wjcu.v2.i3.32] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Revised: 07/30/2013] [Accepted: 08/20/2013] [Indexed: 02/06/2023] Open
Abstract
Male sexual response is controlled by a series of neurally mediated phenomena regulating libido, motivation, arousal and genital responses such as penile erection and ejaculation. These neural events that occur in a hormonally defined milieu involve different neurophysiological, neurochemical, and neuropsychological parameters controlled by central mechanisms, spinal reflexes and peripheral nervous system. Epidemiologic studies have suggested the high prevalence of male sexual dysfunction worldwide with significant impact on the quality of life of patients suffering from this problem. The incidence of sexual dysfunction is particularly high among men with neurologic disorders. Sexual dysfunction in men, such as loss of sexual desire, erectile dysfunction (ED), changes in arousal, and disturbances in orgasm and ejaculation may involve organic causes, psychological problems, or both. Organic male sexual disorders include a wide variety of neurologic, vasculogenic, neurovascular or hormonal factors that interfere with libido, erection, ejaculation and orgasm. Neurogenic sexual dysfunction may result from a specific neurologic problem or it could be the presenting symptom of a developing neurologic disease. Neurologic ED could result from complications of chronic neurologic disorders, trauma, surgical injury or iatrogenic causes. These etiologic factors and the underlying pathophysiologic conditions could overlap, which should be considered when making a diagnosis and selecting a treatment. A detailed history of physical examination, neurologic disorders, as well as any past history of psychological and psychiatric disturbances, and a thorough neurological examination will provide better understanding of the underlying causes of neurogenic sexual dysfunction. In patients with spinal cord injury, the location of the lesion and the time of onset of injury should be determined. Therapeutic strategies against erectile dysfunction are initiated with the least invasive options using the phosphodiesterase inhibitors. When oral medication options are exhausted, intraurethral and intracavernosal therapies and ultimately vacuum constriction devices and penile implants are considered. Recent basic research has suggested the potential role of stem cell-based therapeutic strategies to protect penile neural integrity and reverse cavernosal neurodegeneration in experimental models. Further insight into the central, spinal and peripheral neural mechanisms of male sexual response may help precise diagnosis and better management of neurogenic sexual dysfunction in men.
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Eissa S, Matboli M. Integrated technologies in the post-genomic era for discovery of bladder cancer urinary markers. World J Clin Urol 2013; 2:20-31. [DOI: 10.5410/wjcu.v2.i3.20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Revised: 11/10/2013] [Accepted: 11/21/2013] [Indexed: 02/06/2023] Open
Abstract
The incidence of bladder cancer (BC) continues to rise with high recurrence and mortality rate, especially in the past three decades. The development of accurate and successful BC treatment relies mainly on early diagnosis. BC is a heterogeneous disease reflected by the presence of many potential biomarkers associated with different disease phenotypes. Nowadays, cystoscopy and urinary cytology are considered the gold standard diagnostic tools for BC. There are many limitations to cystoscopy including being invasive, labor-intensive and carcinoma in situ of the bladder may easily be missed. Urinary cytology is still a noninvasive technique with high accuracy in high-grade BC with a median sensitivity of 35%. Furthermore, the need for a sensitive, specific, non invasive, easily accessible BC biomarker is a major clinical need. The field of urinary BC biomarkers discovery is still a rapidly evolving discipline in which more recent technologies are evaluated and often optimized if they are not clinically significant to the urologists. Most of the current strategies for BC urinary biomarker detection depend on integration of information gleaned from the fields of genomics, transcriptomics, proteomics, epigenetics, metabolomics and bionanotechnology. Effort is currently being made to identify the most potentially beneficial urinary biomarkers. The purpose of this review is to summarize and explore the efficacy of gathering the information revealed from the cooperation of different omic strategies that paves the way towards various urinary markers discovery for screening, diagnosis and prognosis of human BC.
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