18 research outputs found
Safety and feasibility of outpatient surgery in benign prostatic hyperplasia: a systematic review and meta-analysis
Purpose: Most of endourological procedures along the urinary tract have been widely practiced as outpatient operations, including surgery for BPH. This systematic review and meta-analysis was conducted to assess safety and feasibility of outpatient surgery for patients suffering from symptomatic BPH candidate for endoscopic disobstruction.
Materials and methods: PubMed, Web of Science, Cochrane, and Embase were searched up until March 30, 2020. MINORS tool was utilized to assess the quality of included studies and a pooled measure of failure or event rate (FR, ER) estimate was calculated. Further sensitivity analysis, subgroup analysis, and meta-regression were conducted to investigate contribution of moderators to heterogeneity.
Results: Twenty studies with a total of 1626 patients treated according to outpatient criteria for endoscopic BPH surgery were included. In total, 18 studies reporting data on immediate hospital readmission and/or inability to discharge after endoscopic procedure presented FR estimates ranging from 1.7% to 51.1%. Pooled FR estimate was 7.8% (95% confidence interval [CI]: 5.2%-10.3%); Heterogeneity: Q=76.85; d.f.=17, p<.001; I2= 75.12%. Subgroup analysis according to surgical technique revealed difference among the three approaches with pooled FR of 3% (95%CI: 1%-4.9%), 7.1% (95%CI: 3.9-10.4) and 11.8% (95%CI: 7-16.7%) for TURP, Green-light and HoLEP respectively (p<.001). At meta-regression analysis, none of the retrieved covariates were able to significantly influence the cumulative outcomes reported. ER for postoperative complications and early outpatient visit showed a pooled estimate of 18.6% (95%CI: 13.2%-23.9%) and 7.7% (95%CI: 4.3%-11%) respectively.
Conclusions: Our analysis revealed how transurethral procedures for BPH on an outpatient setting are overall reliable and safe. Of note, there were significant outcome differences between groups with regard of type of surgical procedure, perioperative prostate volume and discharge protocol suggesting the need for further prospective analysis to better elucidate the best strategy in such outpatient conduct
Magnetron Sputtering of Au-Based Alloys on NiTi Elements: Surface Investigation for New Products in SMA-Based Fashion and Luxury Accessories and Watchmaking
A novel approach for the deposition of Au-based coatings on NiTi components was proposed to give rise to innovative SMA-based products for the fashion, luxury, and watchmaking fields. Different Au-Cu and Au-Ag-Cu alloys (with confidential compositions within the color designations 2N, 4N, and 5N) were deposited by magnetron sputtering on superelastic and shape-memory NiTi ribbons. After preliminary morphological and microstructural characterizations, the influence of the film deposition on the functional, mechanical, and tribological behavior was deeply investigated. The macroscopic mechanical properties, including the damping, superelastic, and shape recovery characteristics, were not affected since the behavior upon both small and severe deformations was unchanged and the coatings were not damaged. Indeed, both the film adhesion and the precious aspect were maintained. Furthermore, a more detailed surface characterization, through nanoindentation, tribocorrosion, and scratch and wear tests, was performed. This experimental investigation evidenced the ductile behavior of the Au-based films and their good adhesion on NiTi substrates. Moreover, the coatings exhibited a good wear resistance, both in dry conditions and simulated body fluids, which proved to be suitable for fashion and watchmaking fields. Despite slight differences being observed within the films’ responses, all of them could be considered suitable and interesting for the design of smart luxury accessories, proving that the chosen deposition process is sound and reliable for these applications
Exosome Analysis in Prostate Cancer: How They Can Improve Biomarkers’ Performance
Exosomes are extracellular nanovesicles (EV), that is, carriers of different biomolecules such as lipids, proteins, nucleic acids. Their composition and the fact that their release dramatically increases in cases of tumorigenesis open up different scenarios on their possible application to research into new biomarkers. The first purpose of the present review was to specifically analyze and compare different methodologies available for the use of exosomes in prostate cancer (PC). The most widely applied methodologies include ultracentrifugation techniques, size-based techniques, immunoaffinity capture-based techniques (mainly ELISA), and precipitation. To optimize the acquisition of exosomes from the reference sample, more techniques can be applied in sequence for a single extraction, thereby determining an increase in labor time and costs. The second purpose was to describe clinical results obtained with the analysis of PSA-expressing exosomes in PC; this provides an incredibly accurate method of discriminating between healthy patients and those with prostate disease. Specifically, the IC-ELISA alone method achieved 98.57% sensitivity and 80.28% specificity in discriminating prostate cancer (PC) from benign prostatic hyperplasia (BPH). An immunocapture-based ELISA assay was performed to quantify and characterize carbonic anhydrase (CA) IX expression in exosomes. The results revealed that CA IX positive exosomes were 25-fold higher in plasma samples from PC patients than in those from healthy controls. The analysis of PC-linked exosomes represents a promising diagnostic model that can effectively distinguish patients with PC from those with non-malignant prostatic disease. However, the use of exosome analysis in clinical practice is currently limited by several issues, including a lack of standardization in the analytical process and high costs, which are still too high for large-scale use
Regenerative medicine-based treatment of stress urinary incontinence with stem cells: a systematic review and meta-analysis
Objectives: The aim of this systematic review and meta-analysis is to analyze clinical trials on the use of autologous stem cell [SC] injection for the treatment of stress urinary incontinence [SUI] in humans. Methods: We analyzed the effect in terms of UI improvement and continence recovery after treatment. A literature search was performed following the PRISMA guidelines. Entry into the analysis was restricted to data collected from clinical prospective trials on humans, including female and male patients with SUI. We performed a cumulative meta-analysis to explore the trend in the effect size across different groups at follow-up. Available data were compared in terms of Event Rate [ER] for the percentage of pad-free patients. Results: 12 trials were enclosed in the analysis. Sample size of patients with SUI ranged from 5 to 123 cases, mainly female cases. Autologous muscle-derived [MDSC] were used in 9 and adipocyte-derived SC [ADSC] in 3 trials. Considering a random effect model, ER of continence recovery was 0.41 [95%CI 0.29 - 0.54], with similar results between the ADSC [ER, 0.40;95%CI 0.12 - 0.69] and the MDSC group [ER 0.41; 95%CI 0.27-0.55] [I2 84.69%; Q 104.69 - p<0.01] [Test of group differences p=0.96] Conclusions: Autologous MDSC or ADSC injection to treat SUI demonstrated to be a safe procedure and a 41% mean rate of continence recovery is described. A higher effort should be produced to design better clinical trials, objectively evaluating either modifications inside the urethral sphincter or long-term functional results in terms of pad test and UI questionnaires
Prognostic role of platelet-to-lymphocyte ratio and neutrophil-to-lymphocyte ratio in patients with non-metastatic and metastatic prostate cancer: a meta-analysis and systematic review
Role of platelet to lymphocyte ratio and neutrophil to lymphocyte ratio in predicting prostate cancer characteristics in non metastatic and metastatic case
How the Analysis of the Pathogenetic Variants of DDR Genes Will Change the Management of Prostate Cancer Patients
Herein, we analyze answers achieved, open questions, and future perspectives regarding the analysis of the pathogenetic variants (PV) of DNA damage response (and repair) (DDR) genes in prostate cancer (PC) patients. The incidence of PVs in homologous recombination repair (HRR) genes among men with metastatic PC varied between 11% and 33%, which was significantly higher than that in non-metastatic PC, and BRCA2 mutations were more frequent when compared to other DDR genes. The determination of the somatic or germline PVs of BRCA2 was able to define a tailored therapy using PARP inhibitors in metastatic castration-resistant prostate cancer (mCRPC) progression after first-line therapy, with significant improvements in the radiologic progression-free survival (rPFS) and overall survival (OS) rates. We propose testing all metastatic PC patients for somatic and germline HRR mutations. Somatic determination on the primary site or on historic paraffin preparations with a temporal distance of no longer than 5 years should be preferred over metastatic site biopsies. The prognostic use of DDR PVs will also be used in selected high-risk cases with non-metastatic stages to better arrange controls and therapeutic primary options. We anticipate that the use of poly-ADP-ribose polymerase (PARP) inhibitors in hormone-sensitive prostate cancer (HSPC) and in combination with androgen receptor signaling inhibitors (ARSI) will be new strategies
Prognostic Value of Albumin to Globulin Ratio in Non-Metastatic and Metastatic Prostate Cancer Patients: A Meta-Analysis and Systematic Review
The aim of our meta-analysis is to analyze data available in the literature regarding a possible prognostic value of the albumin to globulin ratio (AGR) in prostate cancer (PC) patients. We distinguished our analysis in terms of PC staging, histologic aggressiveness, and risk of progression after treatments. A literature search process was performed (“prostatic cancer”, “albumin”, “globulin”, “albumin to globulin ratio”) following the PRISMA guidelines. In our meta-analysis, the pooled Event Rate (ER) estimate for each group of interest was calculated using a random effect model. Cases were distinguished in Low and High AGR groups based on an optimal cut-off value defined at ROC analysis. Four clinical trials were enclosed (sample size range from 214 to 6041 cases). The pooled Risk Difference for a non-organ confined PC between High AGR and Low AGR cases was −0.05 (95%CI: −0.12–0.01) with a very low rate of heterogeneity (I2 < 0.15%; p = 0.43) among studies (test of group differences p = 0.21). In non-metastatic PC cases, the pooled Risk Difference for biochemical progression (BCP) between High AGR and Low AGR cases was −0.05 (95%CI: −0.12–0.01) (I2 = 0.01%; p = 0.69) (test of group differences p = 0.12). In metastatic PC cases, AGR showed an independent significant (p < 0.01) predictive value either in terms of progression free survival (PFS) (Odds Ratio (OR): 0.642 (0.430–0.957)) or cancer specific survival (CSS) (OR: 0.412 (0.259–0.654)). Our meta-analysis showed homogeneous results supporting no significant predictive values for AGR in terms of staging, grading and biochemical progression in non-metastatic PC