Publications by authors named "Liu Liang Ren"

Prostate cancer (PCa) is currently the second most common malignancy in men worldwide,and its incidence rate is on the rise. Most cases of PCa are treated by radical prostatectomy, but with the development of medical imaging and innovation in therapeutic theories and technology, focal therapy has shown better application prospects in the treatment of PCa. Compared with radical prostatectomy, focal therapy yields satisfactory results in terms of effectiveness and reduction of complications in addition to avoidance of overtreatment and treatment-related financial burden.

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This umbrella review aimed to summarize and provide a general evaluation of the effectiveness of current treatments for male infertility and assess the quality of evidence and possible biases. An umbrella review of systematic reviews and meta-analyses available in PubMed, Web of Science, and Scopus, covering studies published up to October 2023, was conducted. Sperm concentration, morphology, and motility were used as endpoints to evaluate the effectiveness of the treatments.

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Purpose: This study aimed to develop and validate a nomogram for predicting the efficacy of transurethral surgery in benign prostatic hyperplasia (BPH) patients.

Methods: Patients with BPH who underwent transurethral surgery in the West China Hospital and West China Shang Jin Hospital were enrolled. Patients were retrospectively involved as the training group and were prospectively recruited as the validation group for the nomogram.

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We investigated the impact and predictive value of bladder function in patients with benign prostatic hyperplasia (BPH) on the efficacy of transurethral prostatectomy. Symptomatic, imaging, and urodynamic data of patients who underwent transurethral prostatectomy at West China Hospital of Sichuan University (Chengdu, China) from July 2019 to December 2021 were collected. Follow-up data included the quality of life (QoL), International Prostate Symptom Score (IPSS), and IPSS storage and voiding (IPSS-s and IPSS-v).

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Enhanced recovery after surgery (ERAS) measures have not been systematically applied in transurethral surgery for benign prostatic hyperplasia (BPH). This study was performed on patients with BPH who required surgical intervention. From July 2019 to June 2020, the ERAS program was applied to 248 patients, and the conventional program was applied to 238 patients.

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As the incidence of prostate cancer (PCa) increases with the aging of men, more and more attention is paid to the prevention and treatment of the pregnancy. In addition to widely used PSA test, MRI and other diagnostic strategies, PCa-related gene screening, with the development of such new technologies as second-generation gene sequencing, is more and more applied in the detection of PCa. Different types of tumor-related genes have different effects on the development and progression of PCa as well as different values in the diagnosis, treatment and prognosis of the malignancy.

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Approximately 10-15% of the cases of male infertility worldwide are caused by obstructive azoospermia. Vasovasostomy (VV) is a gold-standard treatment of this disease, but the success rate of conventional VV remains low for failure to anastomose the vas deferens accurately. Fortunately, microscopy makes the field of vision clearer and greatly increases the success rate of vas deferens recanalization and pregnancy.

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Androgen plays a significant role in the development and progression of prostate cancer (PCa), one of the commonest malignancies in the male urogenital system. Castration-resistant PCa (CRPC) is the end-result of the majority of prostate cancer cases treated by androgen deprivation therapy (ADT). Furthermore, the androgen axis is reactivated due to adaptive intratumoral androgen biosynthesis, which can be driven by adrenal androgens and /or by changes in the androgen receptor (AR) including AR gene amplification.

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Purpose: To systematically assess the perioperative outcomes of retroperitoneal (RP) and transperitoneal (TP) approaches in robot-assisted partial nephrectomy (RAPN), we conducted an updated meta-analysis.

Methods: A literature retrieval of multi-database including PubMed, Web of Science, Embase, Cochrane Library, and CNKI was performed to identify eligible comparative studies from the inception dates to January 2021. Perioperative outcomes included operative time (OT), estimated blood loss (EBL), warm ischemia time (WIT), postoperative length of stay (PLOS), positive surgical margin (PSM), and complications (major complications and overall complications).

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The relationship between long noncoding RNAs (lncRNAs) and the mRNA stemness index (mRNAsi) in colorectal cancer (CRC) is still unclear. The mRNAsi, mRNAsi-related lncRNAs and their clinical significance were analyzed by bioinformatic approaches in The Cancer Genome Atlas (TCGA)-COREAD dataset. mRNAsi was negatively related to pathological features but positively related to overall survival and recurrence-free survival in CRC.

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Background: Persistent or recurrent haemospermia often occurs in individuals with ejaculatory duct obstruction (EDO). This study aimed to evaluate the efficacy and safety of transurethral resection of the ejaculatory duct (TURED) combined with seminal vesiculoscopy in treating persistent or recurrent haemospermia in men with EDO.

Methods: From June 2014 to March 2018, 103 consecutive patients with EDO who underwent TURED combined with seminal vesiculoscopy for persistent or recurrent haemospermia at the Department of Urology of West China Hospital were enrolled into this retrospective study.

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Prostate cancer is a most common malignant tumor in the male urogenital system. Currently, castration-resistant prostate cancer (CRPC) is a bottleneck in the treatment of prostate cancer, which has a very poor prognosis, with a median survival of merely 12 months. Although androgen-deprivation therapy eliminates the majority of the androgens in circulation, CRPC patients adapt to low-level androgens by synthesizing intratumoral androgens or altering androgen receptors.

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As more and more patients with metastatic prostate cancer develop resistance to androgen-deprivation therapy (ADT) and consequently castration-resistant prostate cancer (CRPC), reasonable selection of therapies is becoming increasingly important for the prediction of the therapeutic results. Many studies show that androgen receptor splice variant 7 (AR-V7) is involved in the development and progression of CRPC and that the expression of AR-V7, absolutely higher in CRPC than in hormone-nave prostate cancer, plays a significant role in the mechanisms of resistance to abiraterone, enzalutamide and taxane chemotherapies. Further more, some clinical trials have revealed that the AR-V7 level may indicate the prognosis of different therapeutic options: AR-V7 negative in circulating tumor cells suggesting the effectiveness of a new hormonal therapy and taxane chemotherapy while AR-V7 positive indicating the poor result of a new hormonal therapy.

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Background: To retrospectively investigate the clinical characteristics, initial treatment, relapse, therapy outcome, and prognosis of Chinese patients with primary testicular lymphoma (PTL) through analysis of the cases of our institute.

Methods: From December 2008 to July 2018, all patients with PTL were included in this study. Kaplan-Meier method was used to estimate PFS and OS.

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Background: Methionine synthase reductase gene (MTRR A66G) polymorphism and methionine synthase gene (MTR A2756G) polymorphism have shown an association with idiopathic male infertility risk in several ethnic populations. However, their small sample sizes and inconsistent outcomes have prevented strong conclusions. We performed a meta-analysis with published studies to evaluate the associations of the 2 single nucleotide polymorphisms (SNPs) and idiopathic male infertility risk.

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To evaluate the relationship between the aryl hydrocarbon receptor () rs2066853 gene polymorphism and the risk of male infertility. PubMed, Embase, Web of Science, and Chinese National Knowledge Infrastructure (CNKI) were searched for relevant case-control studies up to 31 July 2019. Odds ratio (OR) and 95% confidence interval (95% CI) were used to assess the strength of associations.

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Article Synopsis
  • A meta-analysis was conducted to explore the link between first-degree family history of female breast cancer and prostate cancer risk, using data from multiple studies up to December 2018.
  • The analysis included 18 studies with over 17 million individuals, finding a significant association: men with a family history of female breast cancer had a 18% higher risk of developing prostate cancer.
  • Specifically, breast cancer history in mothers and sisters was associated with increased prostate cancer risk, while no significant association was found for daughters, suggesting that genetic or environmental factors from mothers and sisters may play a more crucial role in this risk.
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Background: Number of studies have been performed to investigate the relationship between the CYP1A1 rs4646903 polymorphism and male infertility risk, but the sample size was small and the results were conflicting. A meta-analysis was performed to assess these associations.

Methods: A systematic search was conducted to identify all relevant studies from Medline, Web of science, Embase, China biology medical literature database (CBM), China National Knowledge Infrastructure (CNKI), WanFang and Weipu (VIP) databases up to June 30, 2018.

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Introduction: Both oxidative stress and inflammation play important roles in prostate cancer cell apoptosis or proliferation; however, the mechanisms underlying these processes remain unclear. Thus, we selected interleukin-8 (IL-8) as the bridge between inflammation and cancer cell oxidative stress-induced death and aimed to confirm its connection with mTOR and Glycogen synthase kinase-3 beta (GSK-3β).

Methods: We overexpressed GSK-3β and observed its effect on reactive oxygen species (ROS) and oxidative stress-induced cell death.

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Cystatin-C (Cys-C) has been reported as a valuable prognostic biomarker in various malignancies. However, its effect on upper tract urothelial carcinoma (UTUC) patients has not been investigated before. Thus, to explore the impact of Cys-C on survival outcomes in patients undergoing radical nephroureterectomy (RNU), a total of 538 patients with UTUC who underwent RNU between 2005 and 2014 in our center (West China Hospital, Chengdu, China) were included in this study.

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Background: The inflammatory potential of diet has been shown to have an association with the risk of several cancer types, but the evidence is inconsistent regarding the related risk of urologic cancer (UC). Therefore, we conducted the present meta-analysis to investigate the association between the inflammatory potential of diet and UC.

Methods: PubMed, Embase and Web of Science were searched up to July 31, 2018.

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Article Synopsis
  • - A study was conducted to assess whether the TP53 codon72 gene variation is linked to male infertility by analyzing data from seven studies involving 1,818 infertile men and 2,278 controls using the odds ratio method.
  • - The overall results showed no significant link between the TP53 codon72 polymorphism and male infertility risk, with various comparisons yielding odds ratios close to 1, indicating no strong association.
  • - However, a subgroup analysis found a significant association in non-Chinese populations but not in the Chinese population, suggesting that genetic factors may play a different role based on ethnicity, and further research with larger samples is recommended.
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Objective: To explore the feasibility of CT attenuation value (CTvalue) to predict the composition of upper urinary calculi and the number of shock waves (NSW) and success rate (SR) of extracorporeal shock wave lithotripsy (ESWL).

Methods: A total of 146 patients with upper urinary calculi treated by ESWL were included. CT scan was performed before ESWL.

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This paper aims to investigate the pathological characteristics of CD40/CD40L and NF-κB proteins related to inflammation in benign prostatic hyperplasia (BPH) tissue, as well as the outcomes of inflammation. A total of 120 BPH samples were obtained, and clinical data were gathered. The prevalence of BPH-associated inflammation was 91.

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