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40 result(s) for "Hofbauer, Sebastian"
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Outcomes of minimally invasive simple prostatectomy for benign prostatic hyperplasia: a systematic review and meta-analysis
Purpose (1) To assess the outcomes of minimally invasive simple prostatectomy (MISP) for the treatment of symptomatic benign prostatic hyperplasia in men with large prostates and (2) to compare them with open simple prostatectomy (OSP). Methods A systematic review of outcomes of MISP for benign prostatic hyperplasia with meta-analysis was conducted. The article selection process was conducted according to the PRISMA guidelines. Results Twenty-seven observational studies with 764 patients were analyzed. The mean prostate volume was 113.5 ml (95 % CI 106–121). The mean increase in Qmax was 14.3 ml/s (95 % CI 13.1–15.6), and the mean improvement in IPSS was 17.2 (95 % CI 15.2–19.2). Mean duration of operation was 141 min (95 % CI 124–159), and the mean intraoperative blood loss was 284 ml (95 % CI 243–325). One hundred and four patients (13.6 %) developed a surgical complication. In comparative studies, length of hospital stay (WMD −1.6 days, p  = 0.02), length of catheter use (WMD −1.3 days, p  = 0.04) and estimated blood loss (WMD −187 ml, p  = 0.015) were significantly lower in the MISP group, while the duration of operation was longer than in OSP (WMD 37.8 min, p  < 0.0001). There were no differences in improvements in Qmax, IPSS and perioperative complications between both procedures. The small study sizes, publication bias, lack of systematic complication reporting and short follow-up are limitations. Conclusions MISP seems an effective and safe treatment option. It provides similar improvements in Qmax and IPSS as OSP. Despite taking longer, it results in less blood loss and shorter hospital stay. Prospective randomized studies comparing OSP, MISP and laser enucleation are needed to define the standard surgical treatment for large prostates.
Follow-up of men with a PI-RADS 4/5 lesion after negative MRI/Ultrasound fusion biopsy
Magnetic resonance imaging/Ultrasound ( MRI/US) fusion targeted biopsy (TB) in combination with a systematic biopsy (SB) improves cancer detection but limited data is available how to manage patients with a Prostate Imaging-Reporting and Data System (PI-RADS) ≥ 4 lesion and a negative biopsy. We evaluate the real-world management and the rate of clinically significant Prostate Cancer (csPCa) during follow-up. 1546 patients with a multi-parametric MRI (mpMRI) and a PI-RADS ≥ 3 who underwent SB and TB between January 2012 and May 2017 were retrospectively analyzed. 222 men with a PI-RADS ≥ 4 and a negative biopsy were included until 2019. For 177/222 (80%) complete follow-up data was obtained. 66/84 (78%) had an initial PI-RADS 4 and 18 (22%) a PI-RADS 5 lesion. 48% (84/177) received a repeat mpMRI; in the follow-up mpMRI, 39/84 (46%) lesions were downgraded to PI-RADS 2 and 11 (13%) to PI-RADS 3; three cases were upgraded and 28 lesions remained consistent. 18% (32/177) men underwent repeated TB and csPCa was detected in 44% (14/32). Our study presents real world data on the management of men with a negative TB biopsy. Men with a positive mpMRI and lesions with high suspicion (PI-RADS4/5) and a negative targeted biopsy should be critically reviewed and considered for repeat biopsy or strict surveillance. The optimal clinical risk assessment remains to be further evaluated.
Comparison of the prognostic value of pretreatment measurements of systemic inflammatory response in patients undergoing curative resection of clear cell renal cell carcinoma
Purpose Pretreatment measurements of systemic inflammatory response, including the Glasgow prognostic score (GPS), the neutrophil-to-lymphocyte ratio (NLR), the monocyte-to-lymphocyte ratio (MLR), the platelet-to-lymphocyte ratio (PLR) and the prognostic nutritional index (PNI) have been recognized as prognostic factors in clear cell renal cell carcinoma (CCRCC), but there is at present no study that compared these markers. Methods We evaluated the pretreatment GPS, NLR, MLR, PLR and PNI in 430 patients, who underwent surgery for clinically localized CCRCC (pT1-3N0M0). Associations with disease-free survival were assessed with Cox models. Discrimination was measured with the C-index, and a decision curve analysis was used to evaluate the clinical net benefit. Results On multivariable analyses, all measures of systemic inflammatory response were significant prognostic factors. The increase in discrimination compared with the stage, size, grade and necrosis (SSIGN) score alone was 5.8 % for the GPS, 1.1–1.4 % for the NLR, 2.9–3.4 % for the MLR, 2.0–3.3 % for the PLR and 1.4–3.0 % for the PNI. On the simultaneous multivariable analysis of all candidate measures, the final multivariable model contained the SSIGN score (HR 1.40, P  < 0.001), the GPS (HR 2.32, P  < 0.001) and the MLR (HR 5.78, P  = 0.003) as significant variables. Adding both the GPS and the MLR increased the discrimination of the SSIGN score by 6.2 % and improved the clinical net benefit. Conclusions In patients with clinically localized CCRCC, the GPS and the MLR appear to be the most relevant prognostic measures of systemic inflammatory response. They may be used as an adjunct for patient counseling, tailoring management and clinical trial design.
Association of Small Dense LDL Serum Levels and Circulating Monocyte Subsets in Stable Coronary Artery Disease
Atherosclerosis is considered to be an inflammatory disease in which monocytes and monocyte-derived macrophages play a key role. Circulating monocytes can be divided into three distinct subtypes, namely in classical monocytes (CM; CD14++CD16-), intermediate monocytes (IM; CD14++CD16+) and non-classical monocytes (NCM; CD14+CD16++). Low density lipoprotein particles are heterogeneous in size and density, with small, dense LDL (sdLDL) crucially implicated in atherogenesis. The aim of this study was to examine whether monocyte subsets are associated with sdLDL serum levels. We included 90 patients with angiographically documented stable coronary artery disease and determined monocyte subtypes by flow cytometry. sdLDL was measured by an electrophoresis method on polyacrylamide gel. Patients with sdLDL levels in the highest tertile (sdLDL≥4mg/dL;T3) showed the highest levels of pro-inflammatory NCM (15.2±7% vs. 11.4±6% and 10.9±4%, respectively; p<0.01) when compared with patients in the middle (sdLDL=2-3mg/dL;T2) and lowest tertile (sdLDL=0-1mg/dL;T1). Furthermore, patients in the highest sdLDL tertile showed lower CM levels than patients in the middle and lowest tertile (79.2±8% vs. 83.9±7% and 82.7±5%; p<0.01 for T3 vs. T2+T1). Levels of IM were not related to sdLDL levels (5.6±4% vs. 4.6±3% vs. 6.4±3% for T3, T2 and T1, respectively). In contrast to monocyte subset distribution, levels of circulating pro- and anti-inflammatory markers were not associated with sdLDL levels. The atherogenic lipoprotein fraction sdLDL is associated with an increase of NCM and a decrease of CM. This could be a new link between lipid metabolism dysregulation, innate immunity and atherosclerosis.
Differential Bone Marrow Homing Capacity of VLA-4 and CD38 High Expressing Chronic Lymphocytic Leukemia Cells
VLA-4 and CD38 predict a poor clinical outcome in chronic lymphocytic leukemia (CLL). We used CLL samples with discordant VLA-4/CD38 risk to address their individual roles in human bone marrow infiltration (BM), CLL cell homing to murine BM, and in supportive CLL cell-stromal cell interactions. VLA-4, CD38, and Ki-67 expression was measured in CLL cells from peripheral blood (PB) and bone marrow (BM) aspirates. CLL BM infiltration rates, routinely determined by Pathology, were correlated to VLA-4 and CD38 expression. Short-term homing capacity of CLL cells was evaluated by adoptive transfer experiments. CLL cell viability and adhesion in stromal cell co-culture was determined. About 20% of CLL samples in our cohort displayed discordant VLA-4 and CD38 risk, with either high VLA-4 and low CD38 risk or vice versa. Using particularly such samples, we observed that VLA-4, and not CD38, was responsible for recirculation of CLL cells to murine BM. Human BM infiltration was also significantly higher in patients with high VLA-4 risk but not high CD38 risk. However, both molecules acted as independent prognostic markers. While both VLA-4 and CD38 expression were increased in BM-derived CLL cells, and VLA-4+ and CD38+ subpopulations showed enriched Ki-67 expression, VLA-4 did not contribute to CLL cell protection by stromal cells in vitro. Our data argue for a prominent role of VLA-4 but not CD38 expression in the homing of CLL cells to BM niches and in human BM infiltration, but only a limited role in their protection by stromal cells.
Diagnostic performance of Uromonitor and TERTpm ddPCR urine tests for the non-invasive detection of bladder cancer
Uromonitor and urinary telomerase reverse transcriptase promoter mutation droplet digital PCR (uTERTpm ddPCR) are non-invasive tests designed to detect bladder cancer in urine. We aimed to compare the diagnostic performance of uTERTpm ddPCR, Uromonitor and urine cytology in detecting bladder cancer. Urine samples were collected prospectively from patients diagnosed with primary ( n  = 74) and recurrent bladder cancer ( n  = 20) or benign urological conditions ( n  = 48) prior to surgical resection. The samples were tested for bladder cancer via uTERTpm ddPCR, Uromonitor and urine cytology. The sensitivity, specificity, and predictive values were calculated for each test, including confidence intervals. The results were stratified by low-grade non-muscle-invasive bladder cancer, high-grade non-muscle-invasive bladder cancer and muscle-invasive bladder cancer. Compared with urine cytology (59.5%, p  = 0.005) and Uromonitor (56.8%, p  = 0.001), the uTERTpm ddPCR test had the highest sensitivity (79.7%) for the detection of primary bladder cancer. Specificity did not significantly differ. The uTERTpm ddPCR test exhibited superior diagnostic performance over urine cytology and Uromonitor, highlighting its potential for non-invasive primary bladder cancer diagnosis.
Transplant nephrectomy: indication, surgical approach and complications—experiences from a single transplantation center
Purpose Management of a failed kidney allograft, and the question whether it should be removed is a challenging task for clinicians. The reported risks for transplant nephrectomy (TN) vary, and there is no clear recommendation on indications or surgical approach that should be used. This study gives an overview of indications, compares surgical techniques, and identifies risk factors for higher morbidity. Methods Retrospective analysis was conducted on all transplant nephrectomies performed between 2005 and 2020 at Charité Hospital Berlin, Department of Urology. Patient demographics, laboratory parameters, graft survival data, indication for TN, and surgical complications were extracted from medical reports. Results A total of 195 TN were performed, with graft intolerance syndrome being the most common indication in 52 patients (26.7%), acute rejection in 36 (18.5%), acute infection in 30 (15.4%), and other reasons to stop immunosuppression in 26 patients (13.3%). Rare indications were vascular complications in 16 (8.2%) and malignancies in the allograft in six (3.1%) cases. Extracapsular surgical approach was significantly more often used in cases of vascular complications and earlier allograft removal, but there was no difference in complication rates between extra- and intracapsular approach. Acute infection was identified as an independent risk factor for a complication grade IIIb or higher according to Clavien–Dindo classification, with a HR of 12.3 (CI 2.2–67.7; p  = 0.004). Conclusion Transplant nephrectomy should only be performed when there is a good indication, and non-elective surgery should be avoided, when possible, as it increases morbidity.
Urinary expression of genes involved in DNA methylation and histone modification for diagnosis of bladder cancer in patients with asymptomatic microscopic haematuria
The aim of the present study was to identify and test a urine marker panel of genes involved in DNA methylation and histone modification for the detection of urothelial carcinoma of the bladder (UCB). RNA samples obtained from the voided urine of 227 patients with asymptomatic microscopic haematuria (AMH) were analysed. Gene array analysis was performed on 18 randomly selected cDNA samples, which revealed that histone deacetylase 9 (HDAC9), HDAC3, tRNA (cytosine-5-)-methyltransferase1 and DNA methyltransferase 1 were differentially expressed between patients with UCB and control subjects. Subsequently, reverse transcription-quantitative polymerase chain reaction analysis was employed to test the performance of the identified four-gene panel on the remaining 209 cDNA samples. In this targeted discovery cohort, all four genes were significantly associated with UCB on univariable analyses [each odds ratio (OR) >2, P<0.05], but only HDAC3 was significant following multivariable analysis (OR=2.8, P=0.011). The addition of HDAC3 to a base risk factor model improved its accuracy by 1.4%. These data suggest that urinary HDAC3 is associated with the presence of UCB in patients with AMH; however, HDAC3 improved the accuracy of the established risk factors only to a marginal extent.
Loss of chromosome Y is unrelated to the composition of the tumor microenvironment and patient prognosis in muscle-invasive urothelial bladder cancers
Background Loss of chromosome Y (LOY) has recently been proposed to be associated with cancer aggressiveness, altered T-cell function, and poor prognosis in bladder carcinomas. Methods Chromosome Y was analyzed using fluorescence in-situ hybridization on a tissue microarray containing 2,071 urothelial carcinomas of the urinary bladder from male patients, including 487 patients who had undergone cystectomy for muscle-invasive disease and for whom follow-up data were available. Data on tumor microenvironment were obtained from a previous study. Results LOY was found in 26.0% of 1,704 analyzable cancers. In non-invasive cancers, LOY frequency was comparable in pTa G2 (22.8%) and pTa G3 (24.1%, p  = 0.8036) carcinomas and slightly increased from pTa to pT2 - 4 carcinomas (23.1% for pTa and 27.2% for pT2 - 4) but these differences were not significant ( p = 0.0794). In muscle-invasive cancers, LOY frequency slightly increased from pT2 (25.5%) to pT4 cancers (33.0%), but this association was not significant ( p = 0.1814). Among pT2 - 4 cancers, LOY was associated with venous invasion ( p = 0.0010) but unrelated to pT, pN, and L-status, as well as to overall, recurrence-free, and cancer-specific survival. Muscle-invasive urothelial carcinomas with and without LOY did not show significant differences in the number of CD8 positive lymphocytes, fraction of CD8 positive intraepithelial lymphocytes, number of macrophages and dendritic cells, and fraction of T helper and T regulatory cells. Conclusion The lack of a clear association of LOY with histopathological parameters of cancer aggressiveness, patient prognosis, and parameters describing the tumor microenvironment strongly argues against the driving role of LOY in bladder cancer progression and cancer-associated immune reactions.
GATA3 amplification is associated with high grade disease in non-invasive urothelial bladder cancer but unrelated to patient prognosis
Purpose We aimed to assess the impact of GATA3 binding protein (GATA3) gene copy number alterations on tumor aggressiveness, patient prognosis, and GATA3 protein expression in a large urothelial bladder cancer cohort. Methods A tissue microarray containing over 2,700 urothelial bladder cancers (pTa-pT4) was analyzed retrospectively using dual-labeling fluorescence in-situ hybridization (FISH) with probes for GATA3 (10p14) and centromere 10. GATA3 copy number gains were categorized as GATA3 elevation (ratio GATA3 /centromere ≥ 2/≤4), low-level amplification (ratio > 4/≤12), and high-level amplification (ratio > 12) and deletions were divided between homozygous and heterozygous. Results GATA3 copy number gain was detected in 9.9% of 2,213 interpretable tumors, including 2.0% with GATA3 elevation, 3.2% with low-level amplification, and 4.7% with high-level amplification. The frequency of high-level amplification increased from pTa G2 low (0%) to pTa G3 tumors (12% [CI 0.07;0.21]; p  < 0.0001 pTa G2 low vs. pTaG2 high) but decreased in advanced-stage carcinomas pT2-4 with 5.4% [CI 0.07;0.21] ( p  < 0.0001, pTa vs. pT2-4). In muscle-invasive carcinomas, GATA3 amplification was not linked to tumor aggressiveness or patient survival. Overall, no homozygous GATA3 deletion was detected and heterozygous GATA3 deletion was only observed in 1.1%; of 1,432 pT2-4 tumors without any association to cancer progression. While GATA3 copy number was significantly correlated with GATA3 expression ( p  < 0.0001), the relationship was not strong. Only 2.3% of GATA3 -negative cancers had a deletion, and 42.1% of strong GATA3-expressing cancers exhibited high-level amplification. Conclusion High-level GATA3 amplification is common in urothelial bladder cancer and correlates with grade progression in pTa tumors, while GATA3 deletion is rare. Neither amplification nor deletion appears to be the primary driver of GATA3 expression dysregulation. Clinical trial number Not applicable.