393 results match your criteria: "Division of Nephrology Bahçeşehir University Medical School[Affiliation]"

Introduction: Despite the pivotal role of hepcidin in the development of anemia among the patients with chronic kidney disease (CKD), the association between serum hepcidin levels and CKD progression has been never investigated. We here hypothesized that elevation in serum hepcidin levels might be associated with the risk of incident end-stage kidney disease (ESKD) among the patients with pre-dialysis CKD.

Methods: A total of 2,109 patients with pre-dialysis CKD at stages 1 to pre-dialysis 5 were categorized into the quartiles by serum hepcidin levels.

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Article Synopsis
  • The study investigates how cancer cells influence the fitness of surrounding tumor microenvironment (TME) cells through a mechanism involving a long non-coding RNA called Tu-Stroma, which alters the expression of Flower isoforms, impacting their growth advantage.
  • The expression of Flower Win isoforms in cancer cells enhances their dominance over TME cells that express Flower Lose isoforms, leading to reduced fitness in the TME.
  • Targeting Flower proteins with a humanized monoclonal antibody in mice has shown promising results, significantly reducing cancer growth and metastasis while improving survival rates and protecting organs from potential lesions.
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Rationale & Objective: Diabetic kidney disease (DKD) is one of the leading causes of end-stage kidney disease globally. We aim to identify proteomic and metabolomic correlates of histologically confirmed DKD that may improve our understanding of its pathophysiology.

Study Design: A cross-sectional study.

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Circulating microRNAs as markers for scrub typhus-associated acute kidney injury.

Kidney Res Clin Pract

November 2024

Division of Nephrology, Department of Internal Medicine, Presbyterian Medical Center, Jeonju, Republic of Korea.

Background: Circulating microRNAs (miRNAs) are potential biomarkers for various kidney diseases. In this study, we aimed to identify a circulating miRNA signature for detecting acute kidney injury (AKI) in scrub typhus.

Methods: We prospectively enrolled 40 patients with scrub typhus (20 with AKI, AKI group; 20 without AKI, non-AKI group) and 20 healthy volunteers (the HV group).

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YAP1 preserves tubular mitochondrial quality control to mitigate diabetic kidney disease.

Redox Biol

December 2024

Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China; NHC Key Laboratory of Clinical Nephrology (Sun Yat-sen University) and Guangdong Provincial Key Laboratory of Nephrology, Guangzhou, 510080, China. Electronic address:

Renal tubule cells act as a primary site of injury in diabetic kidney disease (DKD), with dysfunctional mitochondrial quality control (MQC) closely associated with progressive kidney dysfunction in this context. Our investigation delves into the observed inactivation of yes-associated protein 1 (YAP1) and consequential dysregulation of MQC within renal tubule cells among DKD subjects through bioinformatic analysis of transcriptomics data from the Gene Expression Omnibus (GEO) dataset. Receiver operating characteristic curve analysis unequivocally underscores the robust diagnostic accuracy of YAP1 and MQC-related genes for DKD.

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Background: Patient trust plays a central role in the patient-physician relationship. This study aimed to determine whether the number of outpatient visits with a covering rheumatologist is associated with patient trust in their usual rheumatologist.

Methods: Japanese adults with systemic lupus erythematosus (SLE) who met the 1997 revised classification criteria of the American College of Rheumatology and had outpatient visits with a covering rheumatologist in the past year were included.

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Background: Mental health affects well-being and physical health. Among adults with chronic kidney disease (CKD), mental health (MH) problems are common and can induce adverse clinical outcomes. We examined the association between patient-reported MH problems and clinical outcomes in adults with non-dialysis CKD.

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Statin Use and the Progression of Coronary Artery Calcification in CKD: Findings From the KNOW-CKD Study.

Kidney Int Rep

October 2024

Division of Nephrology, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.

Introduction: Statin treatment can reduce the risk of cardiovascular disease (CVD). Paradoxically, previous studies have shown that the use of statin is associated with the progression coronary artery calcification (CAC), a well-known predictor of CVD, in individuals with preserved renal function or in patients on dialysis. However, little is known about the association in patients with predialysis chronic kidney disease (CKD).

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The Immunosuppressive Drugs Scientific Committee of the International Association of Therapeutic Drug Monitoring and Clinical Toxicology established the second consensus report to guide Therapeutic Drug Monitoring (TDM) of everolimus (EVR) and its optimal use in clinical practice 7 years after the first version was published in 2016. This version provides information focused on new developments that have arisen in the last 7 years. For the general aspects of the pharmacology and TDM of EVR that have retained their relevance, readers can refer to the 2016 document.

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Article Synopsis
  • The study examines how various clinical, laboratory, and personal factors influence the choice and timing of kidney replacement therapy (KRT) among pediatric patients with chronic kidney disease (CKD).
  • Researchers analyzed a cohort of 695 children aged 6 to 17 to identify what factors lead to either starting dialysis or receiving preemptive transplantation.
  • Key findings show that kidney function decline, disease type, and other health indicators like blood pressure and hemoglobin levels significantly affect KRT decisions, with notable variations between different medical centers.
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  • Some forms of Sjögren's syndrome (SS) cause systemic symptoms due to lymphocyte infiltration in various organs, which the study seeks to understand better using minor salivary gland tissues.
  • The research involved a retrospective analysis of labial gland biopsies from female patients over 60 years old, combining clinical data with molecular techniques for gene expression and tissue imaging.
  • Results revealed that secondary SS showed more severe epithelial damage and lymphocyte activity compared to primary SS, indicating that analyzing these FFPE samples can reveal significant histological differences between the two types of SS.
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Impact of Blood Pressure on Allograft Function and Survival in Kidney Transplant Recipients.

Transpl Int

August 2024

Department of Internal Medicine, College of Medicine, Severance Hospital, Yonsei University, Seoul, Republic of Korea.

The optimal target blood pressure for kidney transplant (KT) patients remains unclear. We included 808 KT patients from the KNOW-KT as a discovery set, and 1,294 KT patients from the KOTRY as a validation set. The main exposures were baseline systolic blood pressure (SBP) at 1 year after KT and time-varying SBP.

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Background: Living kidney donors with hypertension are potential candidates for solving the donor shortages in renal transplantation. However, the safety of donors with hypertension after nephrectomy has not been sufficiently confirmed.

Methods: A total of 642 hypertensive and 4,848 normotensive living kidney donors who were enrolled in the Korean Organ Transplantation Registry between May 2014 and December 2020 were included in this study.

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  • The study explores how metal wear particles from joint prostheses cause bone damage and loosening, primarily through a process called ferroptosis, which is poorly understood in this context.
  • The research identifies that titanium particles lead to osteolysis and cause repression of the anti-ferroptotic factor GPX4 through DNA methylation changes, partly influenced by specific transcription regulators.
  • Treatment with a DNMT inhibitor showed promise in reversing GPX4 repression and reducing bone damage, highlighting a potential therapeutic strategy to counteract the effects of titanium particle-induced osteolysis.
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Impact of Serum Creatinine- and Cystatin C-Based Sarcopenia Index on Renal Outcomes in Non-Dialysis-Dependent Chronic Kidney Disease Patients: Results From the KNOW-CKD Study.

Mayo Clin Proc

September 2024

Division of Nephrology, Department of Internal Medicine, Seoul St Mary's Hospital, The Catholic University College of Medicine, Seoul, Korea; Transplant Research Center, College of Medicine, The Catholic University College of Medicine, Seoul, Korea; Convergent Research Consortium for Immunologic Disease, Seoul St Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea.

Objective: To evaluate the impact of the serum creatinine- and cystatin C-based new sarcopenia index (SI) on renal outcomes in non-dialysis-dependent patients with chronic kidney disease (CKD).

Methods: In this observational Korean Cohort Study for Outcome in Patients With CKD (KNOW-CKD), 1957 patients with CKD stage 1 to stage 4 were analyzed from 2011 to 2019. Men and women were separately assigned to quartile groups according to their SI.

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Introduction: Glucagon-like peptide-1 receptor agonists (GLP-1RAs) are recommended by Kidney Disease: Improving Global Outcomes (KDIGO) as risk-based treatment for hyperglycemia, weight management, and cardiovascular (CV) risk reduction in people with type 2 diabetes (T2D) and chronic kidney disease (CKD). The aim of this analysis was to assess treatment effects of once weekly semaglutide on kidney disease outcomes by KDIGO risk category and on changes in KDIGO risk category, compared with placebo.

Methods: Participants with T2D and established CV disease or at high CV risk treated with once weekly semaglutide or placebo in SUSTAIN 6 (NCT01720446) were stratified by baseline KDIGO risk category (low [ = 1596], moderate [ = 831], high [ = 445], very high [ = 366]).

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Background: Despite significant cardiovascular (CV) morbidity in children on dialysis and after kidney transplantation, data on the evolution of CV damage in children with chronic kidney disease (CKD) approaching kidney replacement therapy (KRT) is unknown.

Methods: The burden, progression, and predictors of CV damage before KRT onset were explored in two prospective multicenter cohorts from Europe and Canada: Cardiovascular Comorbidity in Children with CKD (4C) and Haemodiafiltration, Heart and Height (3H) studies, conducted from 2009-19 and 2013-16, respectively. CV damage and risk factors were evaluated (i) cross sectionally at KRT-start (n = 248), and (ii) longitudinally over the 2-years preceding KRT start (n = 157; 331 patient-visits).

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Background: Sepsis-associated acute kidney injury (SA-AKI) is a prominent sepsis complication, often resulting in adverse clinical outcomes. Hyperbaric oxygen therapy (HBOT), known for its anti-inflammatory characteristics, antioxidant effects, and ability to deliver high oxygen tension to hypo-perfused tissues, offers potential benefits for SA-AKI. This study investigated whether HBOT improved renal injury in sepsis and elucidated its underlying mechanisms.

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A novel allocation scheme for deceased donor kidneys to balance equity and utility.

Kidney Res Clin Pract

June 2024

Division of Nephrology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.

Background: Patients with sensitization and blood type O experience increased waiting times for deceased-donor kidney transplantation (DDKT). While allocation benefits are needed to resolve inequity in DDKT opportunity, whether DDKT has comparable outcomes in this disadvantaged population requires further study. This study assessed these outcomes and developed a new allocation system that balances equity and utility.

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Asymptomatic hematuria in children: Korean Society of Pediatric Nephrology recommendations for diagnosis and management.

Kidney Res Clin Pract

September 2024

Department of Pediatrics, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.

Article Synopsis
  • Hematuria, or blood in urine, is often observed in school-aged children, but there are no established international guidelines for dealing with asymptomatic cases.
  • Recognizing the need for practical and evidence-based guidance, the Korean Society of Pediatric Nephrology has created clinical guidelines tailored for the diagnosis and management of this condition.
  • These guidelines are designed to consider real-world practice, as well as the values and preferences of both patients and healthcare providers.
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Aim: Kidney transplant recipients (KTRs), due to their immunosuppressed status, are potentially more susceptible to both the severe effects of COVID-19 and complications in their transplanted organ. The aim of this study is to investigate whether COVID-19 infection increases the risk of rejection in kidney transplant recipients (KTRs).

Methods: This study involved a detailed literature review, conducted using PubMed, with the search being completed by September 7th, 2023.

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Article Synopsis
  • Non-obstructive azoospermia (NOA) is a prevalent and complex issue with varied treatment options and no definitive guidelines, leading to differing management practices internationally.
  • A comprehensive survey with 336 responses from specialists in 49 countries explored current medical and surgical strategies for NOA, analyzing results against existing guidelines and offering expert recommendations.
  • Key findings included diverse approaches to hormonal therapy, significant variation in sperm retrieval success rates, and differing protocols around varicocele repair and follicle-stimulating hormone cutoff levels for sperm retrieval.
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Article Synopsis
  • * Conducted from July to September 2022, a questionnaire gathered responses from 367 doctors in 49 countries, focusing on how they diagnose NOA through methods like hormone tests and genetic analyses.
  • * The survey identified that while many practices align with guidelines, significant differences in approaches were found, underscoring the need for standardized, evidence-based international guidelines for NOA evaluation.
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