Stéphan Troyanov

ORCID: 0009-0006-2127-4643
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About
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Research Areas
  • Renal Diseases and Glomerulopathies
  • Chronic Kidney Disease and Diabetes
  • Autoimmune Bullous Skin Diseases
  • Complement system in diseases
  • Vasculitis and related conditions
  • Platelet Disorders and Treatments
  • Acute Kidney Injury Research
  • Coagulation, Bradykinin, Polyphosphates, and Angioedema
  • Dialysis and Renal Disease Management
  • Amyloidosis: Diagnosis, Treatment, Outcomes
  • Blood Pressure and Hypertension Studies
  • Electrolyte and hormonal disorders
  • Immunodeficiency and Autoimmune Disorders
  • Systemic Lupus Erythematosus Research
  • Systemic Sclerosis and Related Diseases
  • Renal and related cancers
  • Gout, Hyperuricemia, Uric Acid
  • Lipoproteins and Cardiovascular Health
  • Chronic Lymphocytic Leukemia Research
  • Heart Rate Variability and Autonomic Control
  • Liver Disease Diagnosis and Treatment
  • Cardiac, Anesthesia and Surgical Outcomes
  • Multiple Myeloma Research and Treatments
  • Ovarian cancer diagnosis and treatment
  • Connective Tissue Growth Factor Research

Hôpital du Sacré-Cœur de Montréal
2016-2025

Université de Montréal
2015-2025

Cegep de Saint Jerome
2020-2024

Centre Hospitalier Universitaire Sainte-Justine
2022

Centre hospitalier universitaire de Québec
2020

Université Laval
2020

Research Institute Hospital 12 de Octubre
2019

Pediatric Nephrology of Alabama
2015

Toronto General Hospital
2004-2012

University of Toronto
2009-2012

The Oxford Classification of IgA Nephropathy (IgAN) identified mesangial hypercellularity (M), endocapillary proliferation (E), segmental glomerulosclerosis (S), and tubular atrophy/interstitial fibrosis (T) as independent predictors outcome. Whether it applies to individuals excluded from the original study how therapy influences predictive value pathology remain uncertain. VALIGA examined 1147 patients 13 European countries that encompassed whole spectrum IgAN. Over a median follow-up 4.7...

10.1038/ki.2014.63 article EN cc-by-nc-nd Kidney International 2014-04-02

The Oxford Classification of IgA nephropathy does not account for glomerular crescents. However, studies that reported no independent predictive role crescents on renal outcomes excluded individuals with severe insufficiency. In a large cohort pooled from four retrospective studies, we addressed as predictor and determined whether the fraction crescent-containing glomeruli associates survival either ≥50% decline in eGFR or ESRD (combined event) adjusting covariates used original study. 3096...

10.1681/asn.2016040433 article EN Journal of the American Society of Nephrology 2016-09-09

Current guidelines suggest treatment with corticosteroids (CS) in IgA nephropathy (IgAN) when proteinuria is persistently ≥1 g/d despite 3–6 months of supportive care and eGFR >50 ml/min per 1.73 m2. Whether the benefits this extend to patients an eGFR≤50 m2, other levels proteinuria, or different renal pathologic lesions remains unknown. We retrospectively studied 1147 IgAN from European Validation Study Oxford Classification (VALIGA) cohort classified according Oxford-MEST classification...

10.1681/asn.2014070697 article EN Journal of the American Society of Nephrology 2015-02-13

Focal and segmental glomerulosclerosis (FSGS) is one of the most common primary glomerular diseases to terminate in ESRD. A complete remission (CR) confers an excellent long-term prognosis, but quantitative benefits partial remissions (PR) have not been defined. This study evaluated rate renal function decline (slope creatinine clearance) survival nephrotic FSGS patients with CR, PR, or no remission. It also examined relapse from its impact on outcome. Multivariate analysis included clinical...

10.1681/asn.2004070593 article EN Journal of the American Society of Nephrology 2005-02-17

Summary Background and objectives We assessed the activation of oxidative stress pathway in patients with IgA nephropathy (IgAN), while evaluating classic marker disease (galactose-deficient serum IgA1). Design, setting, participants, & measurements Sera from 292 69 healthy controls Italy United States were assayed for advanced oxidation protein products (AOPPs), free sulfhydryl groups on albumin (SH-Alb), IgA1 galactose-deficient hinge-region O -glycans (Gd-IgA1). Gd-IgA1 was detected...

10.2215/cjn.11571210 article EN Clinical Journal of the American Society of Nephrology 2011-07-23

Abstract Introduction The risk of acute kidney injury (AKI) with the use albumin-containing fluids compared to starches in surgical intensive care setting remains uncertain. We evaluated adjusted AKI associated colloids following cardiac surgery. Methods performed a retrospective cohort study patients undergoing on-pump surgery tertiary center from 2008 2010. assessed crystalloid and colloid administration until 36 hours after was defined by RIFLE (risk, injury, failure, loss end-stage...

10.1186/s13054-014-0602-1 article EN cc-by Critical Care 2014-11-13

Background and objectives: Although early studies suggest that patients with idiopathic membranous nephropathy (MGN) subnephrotic range proteinuria overall do well, these were small follow-up was short or difficult to discern. Design, setting, participants, & measurements: Three hundred ninety-five cases of MGN at least 12 mo from the Toronto Glomerulonephritis Registry reviewed determine outcome subgroup presented proteinuria. Onset data included mean arterial pressure (MAP) creatinine...

10.2215/cjn.01330209 article EN Clinical Journal of the American Society of Nephrology 2009-08-07

ANCA-associated vasculitis (AAV) is treated with potent immunosuppressive regimens. This study sought to determine risk factors associated infections during first-intention therapy.This retrospective involved two separate cohorts of consecutive cases AAV seen from 2004 2011 at university hospitals. The following were assessed: severity; therapy; and periods no, moderate (lymphocyte count, 0.3-1.0× 10(9)/L), or severe count ≤ 0.3×10(9)/L) lymphopenia neutropenia (neutrophil 1.5×10(9)/L).One...

10.2215/cjn.07300712 article EN Clinical Journal of the American Society of Nephrology 2012-12-07

Objective, Design and Patients: The risk of acute kidney injury (AKI) associated with hydroxyethyl starch may be limited to higher molecular weight agents. We retrospectively evaluated the AKI using pentastarch 10% (250 kDa, 0.45) in a random cohort 563 patients operated for cardiac surgery at university hospital. Measures: assessed previously identified preoperative, perioperative, postoperative factors, volume given until end first day. defined by 50% rise serum creatinine within 4 days...

10.1097/ccm.0b013e31819cc1a0 article EN Critical Care Medicine 2009-04-01

Tonsillectomy has been considered a treatment for IgA nephropathy (IgAN). It is aimed at removing source of pathogens, reducing mucosa-associated lymphoid tissue and decreasing polymeric synthesis. However, its beneficial effect still controversial. In Asia, favorable outcomes have claimed mostly in association with corticosteroids. Europe, small, single-center uncontrolled studies failed to show benefits.The European validation study the Oxford classification IgAN (VALIGA) collected data...

10.1159/000441852 article EN ˜The œNephron journals/Nephron journals 2015-11-19

<b><i>Background:</i></b> Recent acute kidney injury (AKI) guidelines, based on studies performed a decade ago, recommend avoiding aminoglycosides (AGs) in patients at risk of AKI. Whether present patient characteristics and management have changed this is uncertain. We determined the current incidence, factors outcomes AG-AKI. <b><i>Methods:</i></b> retrospectively identified adult who received gentamicin or tobramycin for ≥5 days 2 large...

10.1159/000440867 article EN ˜The œNephron journals/Nephron journals 2015-01-01

The appropriate observation period, rate and risk factors of complications after a percutaneous renal biopsy remain debated.We retrospectively studied native kidney biopsies performed in our institution between January 2007 July 2011. Outpatients had either an 8- (67%) or 24-hour (33%) period.312 were reviewed (287 patients), 51% patients female the mean age was 54 ± 15 years. Half these outpatients. A total 15% developed symptomatic hematoma, 9% received red blood cell transfusion 1%...

10.1159/000360087 article EN Nephron Extra 2014-03-22
Shubha S. Bellur Stéphan Troyanov Olga Vorobyeva Rosanna Coppo Ian S D Roberts and 95 more Rosanna Coppo J. Feehaly S. Troyanov Daniel C. Cattran H. Terence Cook Stephen A. Roberts John Scott Radcliffe María Luisa Russo Vladimı́r Tesař Dita Maixnerová Sigrid Lundberg Loreto Gesualdo Francesco Emma Laura Fuiano G. Beltrame Cristiana Rollino A Amore Roberta Camilla Licia Peruzzi Manuel Praga Sandro Feriozzi Rosaria Polci Giuseppe Segoloni Loredana Colla Antonello Pani Doloretta Piras Andrea Angioi G. Cancarini S. Ravera Magdalena Durlik Elisabetta Moggia José Ballarín S. Di Giulio Francesco Pugliese I. Serriello Yaşar Çalışkan Mehmet Şükrü Sever İşın Kiliçaslan Francesco Locatelli Lucia Del Vecchio Jack F.M. Wetzels Harm Peters U. Berg Fernanda Carvalho A.C. da Costa Ferreira M. Maggio Andrzej Więcek Mai Ots-Rosenberg Riccardo Magistroni Rezan Topaloğlu Yelda Bilginer Marco DʼAmico Katerina Papagianni Μaria Stangou F Giacchino D. Goumenos M. Papasotirious Pantelitsa Kalliakmani Miltiadis Gerolymos Kres̆imir Gales̃ić Luka Torić Colin Geddes Kostas C. Siamopoulos Olga Balafa Marco Galliani Piero Stratta Marco Quaglia R Bergia Raffaella Cravero Maurizio Salvadori Lino Cirami Bengt Fellström Hilde Kloster Smerud Franco Ferrario T. Stellato Jesús Egido Carina Aguilar Martín J. Floege Frank Eitner Antonio Lupo Patrizia Bernich Paolo Menè Massimo Morosetti Cees van Kooten Ton J. Rabelink Marlies E. J. Reinders J.M. Boria Grinyo Stefano Cusinato Luisa Benozzi Silvana Savoldi C. Licata Małgorzata Mizerska-Wasiak Maria Roszkowska–Blaim Magdalena Durlik Tomasz Hryszko

10.1016/j.kint.2024.03.011 article EN Kidney International 2024-03-28
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