82 results match your criteria: "Sun Yat-Sen University School of Medicine[Affiliation]"

Novel pressure- and temperature-controlled flexible ureteroscope system with a suction ureteral access sheath: a multicenter retrospective feasibility study.

World J Urol

December 2024

Department of Urology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 33 Yingfeng Road, Haizhu District, Guangzhou, 510000, Guangdong, China.

Purpose: The purpose of this study was to assess the feasibility of a pressure-controlled and temperature-controlled flexible ureteroscope system (PT Scope™) during flexible ureteroscopy.

Materials And Methods: We developed the PT Scope™, a novel ureteroscope system with capabilities for monitoring and controlling intrarenal pressure and temperature to maintain them within set parameters. Data were retrospectively collected from 48 consecutive patients diagnosed with upper urinary tract stones who underwent flexible ureteroscopic lithotripsy using the PT Scope™ across five centers in China.

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Immature PIT1-lineage pituitary neuroendocrine tumors (PitNETs)/adenomas (Immature PIT1-lineage tumors) are a rare and underrecognized subtype of PitNETs that exhibits distinct cytologic atypia features and aggressive clinical potential. This study characterizes the clinical, radiological, histologic, and immunohistochemical features of 15 immature PIT1-lineage tumors identified from 1084 PitNETs patients over 5 years. Our cohort of 6 males and 9 females had a median age of 37.

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The tumor immune microenvironment is a crucial factor influencing tumor progression, and its molecular mechanisms have become a key topic in immunotherapy research. Programmed death receptor-1 ligand (PD-L1, CD274) is a well-known immunosuppressive molecule that can mediate the immune escape of tumor cells. The aim of this study was to evaluate the significance of PD-L1 in human cancer by integrated bioinformatics analysis.

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Persistent vaccine-elicited humoral immune imprinting in Tibetans: a matched cohort study in Tibet.

Clin Microbiol Infect

November 2024

Research Center of The Seventh Affiliated Hospital, Sun Yat-Sen University School of Medicine, Shenzhen, Guangdong, China; Division of Research and Development, US Department of Veterans Affairs New York Harbor Healthcare System, Brooklyn, NY, United States; Department of Cell Biology, State University of New York Downstate Health Sciences University, Brooklyn, NY, United States. Electronic address:

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Background: Early detection of bladder cancer (BCa) can have a positive impact on patients' prognosis. However, there is currently no widely accepted method for early screening of BCa. We aimed to develop an efficient, clinically applicable, and noninvasive method for the early screening of BCa by detecting specific serum miRNA levels.

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Background: There have been some studies on the occurrence of ESR1 and 2 polymorphisms and AIS, but some data extraction is wrong, and there are no studies on the progress of AIS.

Methods: Computer searches were conducted on PubMed, EMBASE, ScienceDirect and Scopus from the establishment of the database to April 2024. Cross-sectional and case-control studies on estrogen receptor ESR1, two single nucleotide polymorphisms, and the occurrence and development of AIS were collected, and statistical analysis was performed using the Revman 5.

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SARS-CoV-2 Nirmatrelvir Resistance-A Concern for Immunocompromised Populations?

JAMA Netw Open

September 2024

Division of Research and Development, VA New York Harbor Healthcare System, Brooklyn.

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Integrative analysis regarding the correlation between collagen-related genes and prostate cancer.

BMC Cancer

August 2024

Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107 Yanjiang West Road, Guangzhou, Guangdong, 510000, China.

Article Synopsis
  • Prostate cancer (PCa) mortality is rising due to recurrence and metastasis, prompting research on collagen's role in tumor progression and its gene relationships with PCa prognosis.
  • Gene expression data led to the identification of four key collagen-associated genes (PLOD3, COL1A1, MMP11, FMOD), used to create a risk scoring model linked to improved biochemical recurrence-free survival outcomes.
  • The findings suggest that the risk score may serve as an effective prognostic tool for PCa patients, with PLOD3 identified as a promising target for therapeutic interventions.
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Article Synopsis
  • Untargeted metabolomic analysis using mass spectrometry encounters challenges like complex data processing and high variability among samples, but a new method called DeepMSProfiler addresses these issues effectively.
  • DeepMSProfiler utilizes deep learning to analyze raw metabolic signals and differentiates between the profiles of lung adenocarcinoma, benign lung nodules, and healthy individuals with high accuracy (AUC 0.99).
  • The method not only detects early-stage lung adenocarcinoma with 96.1% accuracy but also provides insight into disease-related metabolite-protein networks and reveals important correlations in lipid metabolomic data, making it a valuable tool for disease diagnosis and research.
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Utilizing Liquid-liquid phase separation-related lncRNAs to predict the prognosis and treatment response of PCa.

Discov Oncol

August 2024

Shenshan Medical Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No.1 Zhanqian Heng'er Road, Dongchong Town, Shanwei City, 516621, Guangdong, China.

Background: Studies have indicated a close association between genes linked to liquid-liquid phase separation (LLPS) and the progression of prostate cancer (PCa). However, the interplay among long non-coding RNAs (lncRNAs) linked to LLPS in PCa remains elusive. Therefore, we constructed a prediction model based on LLPS-related LncRNA in PCa to explore its relationship with the prognosis and drug treatment of PCa.

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An In Vivo Assessment of a Novel Temperature Control Flexible Ureteroscope System for Monitoring and Controlling Intrarenal Temperature During Flexible Ureteroscopy.

Urology

September 2024

Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Clinical Research Center for Urological Diseases, Guangzhou, Guangdong, China; Sun Yat-sen University School of Medicine, Sun Yat-sen University, Shenzhen, Guangdong, China. Electronic address:

Objective: To evaluate the efficacy of a novel temperature control flexible ureteroscope system in the precise monitoring and control of intrarenal temperature (IRT) during ureteroscopy.

Methods: We developed a novel temperature control flexible ureteroscope system (PT-Scope), including a temperature-monitoring ureteroscope and a irrigation-suction platform for temperature regulation. A porcine thermometry model was established to observe temperature changes under varying holmium laser powers (10, 20, 30 W) and irrigation rates (0, 20, 50 mL/min), utilizing percutaneous nephrostomy thermometry and PT-Scope measurements, with subsequent evaluation of temperature variations at different distances from the laser fiber tip.

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Washed microbiota transplantation improves sleep quality in patients with sleep disorder by the gut-brain axis.

Front Neurosci

June 2024

Department of Gastroenterology, Research Center for Engineering Techniques of Microbiota-Targeted Therapies of Guangdong Province, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China.

Background: The clinical impact of washed microbiota transplantation (WMT) from healthy donors in sleep disorder (SD) patients is unclear. This study aimed to investigate the effect of WMT in SD patients.

Methods: The clinical data were collected from patients with different indications receiving 1-3 courses of WMT, divided into two groups by 7 points of PSQI scale.

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Recent symptomatic Omicron infection reduced COVID-19 pneumonia risk during reinfection: A computed tomography-based cohort study.

Int J Infect Dis

September 2024

Research Center of The Seventh Affiliated Hospital, Sun Yat-sen University School of Medicine, Shenzhen, China; Division of Research and Development, US Department of Veterans Affairs New York Harbor Healthcare System, Brooklyn, USA; Department of Cell Biology, State University of New York Downstate Health Sciences University, Brooklyn, USA. Electronic address:

Article Synopsis
  • SARS-CoV-2 infection may lead to ongoing lung damage, and previous infections could influence immunity and pneumonia risks, especially after recent variants.
  • A study in Xiangyang, China, involving 15,598 patients followed through two Omicron waves showed that first-wave patients had a pneumonia prevalence of 19.6%, while only 0.2% of reinfected patients in the second wave developed pneumonia.
  • The results indicate that in a mostly vaccinated group, those who had a symptomatic Omicron infection within the last 8 months had a significantly lower risk of pneumonia during reinfection, suggesting the importance of recent infections or boosters for uninfected individuals.
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Washed Microbiota Transplantation Is Associated With Improved Lipid Profiles: Long-Term Efficacy and Safety in an Observational Cohort From South China.

Clin Transl Gastroenterol

July 2024

Department of Gastroenterology, Research Center for Engineering Techniques of Microbiota-Targeted Therapies of Guangdong Province, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China.

Introduction: Dyslipidemia is one of the main risk factors of chronic metabolic diseases. Our previous studies have shown that washed microbiota transplantation (WMT) has a significant improvement effect on patients with hyperlipidemia and hypolipemia in the Chinese population. The purpose of this study was to further explore the long-term efficacy and safety of WMT in patients with hyperlipidemia.

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The predictive significance of chromobox family members in prostate cancer in humans.

Cell Oncol (Dordr)

August 2024

Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510000, China.

Purpose: The Chromobox (CBX) family proteins are crucial elements of the epigenetic regulatory machinery and play a significant role in the development and advancement of cancer. Nevertheless, there is limited understanding regarding the role of CBXs in development or progression of prostate cancer (PCa). Our objective is to develop a unique prognostic model associated with CBXs to improve the accuracy of predicting outcomes of patients with PCa.

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Up-regulation of RAN by MYBL2 maintains osteosarcoma cancer stem-like cells population during heterogeneous tumor generation.

Cancer Lett

April 2024

Guangdong Provincial Key Laboratory of Digestive Cancer Research, Center of Digestive Diseases, Scientific Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, PR China. Electronic address:

Intratumor heterogeneity is one of the major features of cancers, leading to aggressive disease and treatment failure. Cancer stem-like cells (CSCs) are believed to give rise to the heterogeneous cell types within tumors. Hence, understanding the regulatory mechanism underlying the recurrence process of heterogeneous tumor by CSCs could facilitate the development of CSC-targeted therapies.

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Establishment of a prognostic risk prediction model incorporating disulfidptosis-related lncRNA for patients with prostate cancer.

BMC Cancer

January 2024

Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107 Yanjiang West Road, 510000, Guangzhou, Guangdong, China.

Purpose: Prostate cancer (PCa) is one of the major tumor diseases that threaten men's health globally, and biochemical recurrence significantly impacts its prognosis. Disulfidptosis, a recently discovered cell death mechanism triggered by intracellular disulfide accumulation leading to membrane rupture, is a new area of research in the context of PCa. Currently, its impact on PCa remains largely unexplored.

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Article Synopsis
  • Drosha is a key player in processing primary microRNAs (pri-miRNAs) and regulating about 80 ribosomal protein genes, with mutations in its amino-terminal region linked to a vascular disorder.
  • Researchers created a Drosha mutant (ΔN) lacking the amino-terminal region and found it couldn't process pri-miRNAs, leading to a significant depletion of most miRNAs, except for a specific cluster (miR-183/96/182).
  • The study highlights that ΔN remains stable under nutrient lack, causing increased ribosomal protein production and protein synthesis, thus allowing cells to bypass growth arrest, emphasizing the importance of Drosha-NTR in miRNA production and nutrient-responsive control of translation.
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Objective: This study aims to demonstrate the cellular composition and underlying mechanisms in subchondral bone marrow lesions (BMLs) of knee osteoarthritis (OA).

Methods: BMLs were assessed by MRI Osteoarthritis Knee Score (MOAKS)≥2. Bulk RNA-sequencing (bulk-seq) and BML-specific differentially expressed genes (DEGs) analysis were performed among subchondral bone samples (including OA-BML=3, paired OA-NBML=3; non-OA=3).

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High-throughput proteomics profiling-derived signature associated with chemotherapy response and survival for stage II/III colorectal cancer.

NPJ Precis Oncol

May 2023

Guangdong Institute of Gastroenterology; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, PR China.

Adjuvant chemotherapy (ACT) is usually used to reduce the risk of disease relapse and improve survival for stage II/III colorectal cancer (CRC). However, only a subset of patients could benefit from ACT. Thus, there is an urgent need to identify improved biomarkers to predict survival and stratify patients to refine the selection of ACT.

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The current COVID-19 vaccination program requires frequent booster vaccination to maintain sufficient neutralization levels against immune evasive SARS-CoV-2 variants. However, prior studies found more potent and durable immune response in convalescing individuals, raising the possibility of less frequent booster vaccination for them. Here, we conducted a longitudinal immunological study based on two prospective cohorts of booster vaccinated convalescing COVID-19 patients or healthcare workers (HCW) without COVID-19 history in Xiangyang, China.

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Viral dynamics during SARS-CoV-2 omicron infection highlight presymptomatic and asymptomatic infectiousness.

J Infect

May 2023

Department of Research, The Seventh Affiliated Hospital, Sun Yat-sen University School of Medicine, Shenzhen, Guangdong, China; Division of Research and Development, VA NY Harbor Healthcare System Brooklyn Campus, 800 Poly Place, Main Bldg 3-201, Brooklyn, NY 11209, USA; Department of Cell Biology, State University of New York Downstate Health Sciences University, Brooklyn, NY 11203, USA. Electronic address:

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Omicron-adapted vaccines might require longer follow-up to reveal true benefits.

Lancet Microbe

January 2023

Department of Research, The Seventh Affiliated Hospital, Sun Yat-sen University School of Medicine, Shenzhen, China; Division of Research and Development, US Department of Veterans Affairs New York Harbor Healthcare System, Brooklyn, NY 11209, USA; Department of Cell Biology, State University of New York Downstate Health Sciences University, Brooklyn, NY, USA. Electronic address:

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