نتایج جستجو برای: myeloperoxidase mpo

تعداد نتایج: 7529  

2015
S Berg H Björnsdottir M Sundqvist P Wekell K Christenson V Osla A Welin J Bylund A Karlsson

Introduction We report a severe case of chronic recurrent multifocal osteomyelitis (CRMO) associated with total myeloperoxidase (MPO) deficiency. The etiology of CRMO is in most cases unknown, and this is to our knowledge the first case associated with MPO-deficiency. Leukocyte MPO-deficiency renders neutrophils unable to process superoxide to secondary reactive oxygen species (ROS). Partial MP...

Journal: :Circulation 2009
John A Ronald John W Chen Yuanxin Chen Amanda M Hamilton Elisenda Rodriguez Fred Reynolds Robert A Hegele Kem A Rogers Manel Querol Alexei Bogdanov Ralph Weissleder Brian K Rutt

BACKGROUND Inflammation undermines the stability of atherosclerotic plaques, rendering them susceptible to acute rupture, the cataclysmic event that underlies clinical expression of this disease. Myeloperoxidase is a central inflammatory enzyme secreted by activated macrophages and is involved in multiple stages of plaque destabilization and patient outcome. We report here that a unique functio...

Journal: :Circulation research 2017
Martin Mollenhauer Kai Friedrichs Max Lange Jan Gesenberg Lisa Remane Christina Kerkenpaß Jenny Krause Johanna Schneider Thorben Ravekes Martina Maass Marcel Halbach Gabriel Peinkofer Tomo Saric Dennis Mehrkens Matti Adam Florian G Deuschl Denise Lau Birgit Geertz Kashish Manchanda Thomas Eschenhagen Lukas Kubala Tanja K Rudolph Yuping Wu W H Wilson Tang Stanley L Hazen Stephan Baldus Anna Klinke Volker Rudolph

RATIONALE Ventricular arrhythmias remain the leading cause of death in patients suffering myocardial ischemia. Myeloperoxidase, a heme enzyme released by polymorphonuclear neutrophils, accumulates within ischemic myocardium and has been linked to adverse left ventricular remodeling. OBJECTIVE To reveal the role of myeloperoxidase for the development of ventricular arrhythmias. METHODS AND R...

2005
Gary R. Lanham Frederick J. Bollum Dorothy L. Williams Sanford A. Stass

Cases of acute leukemia showing both terminal deoxynucleotidyl transferase (TdT) and myeloperoxidase (MPO) activities are usually classified as acute myelogenous leukemia (AMI). Although some reports have implied overlap of TdT and MPO based on population percentages. direct evidence for simultaneous expression of TdT and MPO by a leukemic blast is lacking. By use of a simple new technique deve...

2009
Kei Matsumoto Hirokazu Honda Takanori Shibata Daisuke Sanada Yukihiro Wada Eijin Ashikaga Aki Kuroki Kozo Kitazawa Tadao Akizawa

An elderly woman presented with haematuria and proteinuria accompanied by elevated serum myeloperoxidase (MPO)-specific anti-neutrophil cytoplasmic antibodies (MPO-ANCA). A renal biopsy revealed mild mesangial proliferation with fibrocellular crescent formation and a membranous glomerular lesion. Immunofluorescence microscopy using FITC-labelled rabbit anti-human MPO antibodies revealed granula...

Journal: :Circulation 2011
Roger K Schindhelm

Letter by Schindhelm Regarding Article, “High Levels of Systemic Myeloperoxidase Are Associated With Coronary Plaque Erosion in Patients With Acute Coronary Syndromes: A Clinicopathological Study” To the Editor: In their very elegant study, “High Levels of Systemic Myeloperoxidase Are Associated With Coronary Plaque Erosion in Patients With Acute Coronary Syndromes: A Clinicopathological Study,...

Journal: :Journal of the American College of Cardiology 2007
W H Wilson Tang Wilson Tong Richard W Troughton Maureen G Martin Kevin Shrestha Allen Borowski Sue Jasper Stanley L Hazen Allan L Klein

OBJECTIVES The purpose of this study was to explore the relationship between myeloperoxidase (MPO) and cardiac structure, performance, and prognosis. BACKGROUND Myeloperoxidase is an inflammatory marker that is elevated in patients with heart failure (HF) and cardiac dysfunction, with mechanistic links to plaque vulnerability and left ventricular (LV) remodeling. METHODS We evaluated plasma...

Journal: :Journal of the American College of Cardiology 2006
Markus Exner Erich Minar Wolfgang Mlekusch Schila Sabeti Jasmin Amighi Wolfgang Lalouschek Gerald Maurer Christian Bieglmayer Heidi Kieweg Oswald Wagner Martin Schillinger

OBJECTIVES We investigated the effect of myeloperoxidase (MPO) on progression of carotid stenosis in states of high and low high-density lipoprotein-cholesterol (HDL-C) and low-density lipoprotein-cholesterol (LDL-C) levels. BACKGROUND Myeloperoxidase is pivotally involved in the pathogenesis of atherosclerosis. In vitro data suggest that MPO exerts deleterious effects via oxidative modulatio...

2005
Gary R. Lanham Frederick J. Bollum Dorothy L. Williams Sanford A. Stass

Cases of acute leukemia showing both terminal deoxynucleotidyl transferase (TdT) and myeloperoxidase (MPO) activities are usually classified as acute myelogenous leukemia (AMI). Although some reports have implied overlap of TdT and MPO based on population percentages. direct evidence for simultaneous expression of TdT and MPO by a leukemic blast is lacking. By use of a simple new technique deve...

2017
Atsushi Satomura Takayuki Fujita Takashi Maruyama Hiroaki Hamada Yukinari Nozawa Eiichi Takayama Toshiharu Maruyama Tomohiro Nakayama

Myeloperoxidase-antineutrophil cytoplasmic antibody-associated vasculitis (MPO-AAV) does not usually involve large vessels, such as the aorta. However, we experienced three cases having an aortic aneurysm as a complication of MPO-AAV with renal insufficiency. In one patient it involved the onset of descending aortic dissection during treatment for MPO-AAV; another two patients had an abdominal ...

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