Publications by authors named "PeiQian Yang"

Purpose: To assess outcomes of bilateral single-session percutaneous nephrolithotomy (PCNL) with minimally invasive techniques in pediatric population.

Materials And Methods: From August 2015 to July 2021, 45 children (including 12 infants) were treated with bilateral single-session PCNL, which included miniPCNL (12-16-Fr) and Microperc (4.8-Fr).

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Background: The forgotten ureteral stents (FUS) is one of the late complications of stent placement. This systematic review summarized different aspects of FUS and focused on the problems and solutions related to FUS.

Methods: This systematic review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) statement.

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Article Synopsis
  • The study evaluates the learning curves and outcomes of pediatric flexible ureteroscopy (FURS) and percutaneous nephrolithotomy (PCNL) performed by a surgeon experienced in adult procedures.
  • Data from children treated for nephrolithiasis between June 2014 and April 2019 showed stone-free rates (SFR) of 88.1% for FURS and 89.5% for PCNL, with complication rates at 19.8% and 35.1%, respectively.
  • The findings indicate that surgical experience enhances SFRs for both procedures, with about 60 PCNL cases needed to achieve competence, while favorable outcomes for FURS can be reached early in the learning phase.
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Background: To evaluate the predictive performance of age for the risk of Gleason score change and pathologic upstaging.

Evidence Acquisition: Ovid MEDLINE, Ovid Embase, and the Cochrane Library were searched from inception until May 2020. Quality of included studies was appraised utilizing the Newcastle-Ottawa Quality Assessment Scale for case-control studies.

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Background: To explore the rate of Gleason sum upgrading (GSU) from biopsy to radical prostatectomy pathology and to develop a nomogram for predicting the probability of GSU in a Chinese cohort.

Methods: We retrospectively reviewed our prospectively maintained prostate cancer (PCa) database from October 2012 to April 2020. 198 patients who met the criteria were enrolled.

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Purpose: To examine the correlation between prostate specific antigen (PSA) and the risk of Gleason sum upgrading (GSU) from biopsy Gleason sum (bGS) to prostatectomy Gleason sum (pGS).

Materials And Methods: Five electronic databases (Web of Science, Ovid Medline, Ovid Embase, SCOPUS and the Cochrane Library) were searched from inception until March 2020. Studies were included if they focused on the relationship between PSA and GSU analyzed in multivariable analysis.

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Introduction: Genistein is recognized as a potent anti-oxidant in soybean-enriched foods, which is a kind of phytoestrogen involved in anticancer activity in various cancers.

Objective: The objective of this study was to investigate the molecular mechanism of CDKN2a hypomethylation involved in the anti-tumor effect of genistein on kidney cancer.

Methods: The CDKN2a expression was measured using qRT-PCR.

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Objective: Vascular endothelial growth factor (VEGF) serum level or tumor expression may be prognostic in renal cell carcinoma (RCC). The purpose of this meta-analysis was to examine the prognostic value of serum VEGF level and tumor expression in patients with RCC.

Methods: PubMed and EMBASE databases were searched until September 26, 2016.

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Introduction: mTOR and MDM2 signaling pathways are frequently deregulated in cancer development, and inhibition of mTOR or MDM2 independently enhances carcinoma-cell apoptosis. However, responses to mTOR and MDM2 antagonists in renal cell carcinoma (RCC) remain unknown.

Materials And Methods: A498 cells treated with MDM2 antagonist MI-319 and/or mTOR inhibitor rapamycin were employed in the present study.

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Objective: To explore expression and clinical relevance of phosphohistidine phosphatase 1 (PHPT1) in clear-cell renal cell carcinoma.

Methods: Patients with clear-cell renal cell carcinoma who underwent radical or nephron-sparing nephrectomy were enrolled. Correlations between PHPT1 expression and demographic and clinical characteristics were analysed prospectively.

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In the present study, we wanted to examine the predominant factor/s in the initiation of metastasis. We used samples of advanced grades of renal clear cell carcinoma with documented clinical history of vena caval spread as the experimental group. The major rationale for this selection is the fact that renal cell carcinoma metastasize extensively through the inferior vena cava up to the pulmonary bed and often exist as a continuous mass of metastatic tissue.

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microRNAs (miRNAs) have been proposed to be key regulators of diverse biological processes such as transcriptional regulation, cell growth and tumorigenesis. Wnt signaling plays an important role in the regulation of tumorigenesis and cancer progression. However, little is known about whether miR-144 regulates bladder cancer cell proliferation by controlling Wnt signaling.

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Objective: To report on our experience with laparoscopic retroperitoneal dismembered pyeloplasty in the treatment of ureteropelvic junction (UPJ) obstruction. Special attention was paid to the technical features associated with the procedure.

Subjects And Methods: From May 2004 to April 2012, in total, 117 consecutive patients (64 men and 53 women) with a mean age of 33.

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Horseshoe kidney and retrocaval ureter are uncommon congenital anomalies of the genitourinary system that are easily diagnosed by typical imaging features. Both anomalies presenting in one patient is a rare disease characterized by isthmus of horseshoe kidney between the abdominal aorta and inferior vena cava. The clinical diagnosis and treatment of horseshoe kidney with retrocaval ureter remain a challenge.

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Objective: To investigate the role of transforming growth factor-β-induced (TGFBI) in metastasis of renal cell carcinoma (RCC) and the associations between TGFBI expression and von Hippel-Lindau (VHL) status.

Methods: In null type VHL cells stably transfected with the VHL vector, the expression of VHL in cells with wild type VHL was decreased by siRNA. We investigated the effects of hypoxia-inducible transcription factor (HIF) on TGFBI in RCC cells by decreasing the expression levels of HIF-1α and HIF-2α through siRNA.

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The purpose of this study was to clarify the mechanism of IFN-α resistance in RCC. The effects of IFN-α on induction of apoptosis and cell-cycle arrest were analyzed by flow cytometric analysis. Jak-Stat pathway components induced by IFN-α was evaluated using Western blotting.

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Synopsis of recent research by authors named "PeiQian Yang"

  • - Peiqian Yang's research primarily focuses on minimally invasive techniques in urology, particularly in pediatric nephrolithiasis and the management of ureteral stents, highlighting advancements in procedures like bilateral single-session PCNL and the implications of forgotten ureteral stents.
  • - Yang has conducted systematic reviews and meta-analyses exploring the relationships between various clinical factors and prostate cancer outcomes, including Gleason score upgrading and the role of prostate-specific antigen levels, revealing significant associations that contribute to risk assessment in prostate cancer patients.
  • - Additionally, Yang investigates molecular mechanisms in cancer biology, including the effects of compounds like genistein on kidney cancer cells and the prognostic relevance of factors such as vascular endothelial growth factor in renal cell carcinoma, emphasizing both therapeutic potential and predictive markers.