نتایج جستجو برای: myeloperoxidase mpo

تعداد نتایج: 7529  

Journal: :Journal of clinical pathology 1990
J Storr G Dolan E Coustan-Smith D Barnett J T Reilly

The expression of myeloperoxidase (MPO) was studied in 100 cases of acute leukaemia (83 with acute myeloid leukaemia (AML) and 17 acute lymphoblastic leukaemia (ALL) by both a conventional cytochemical method and the immunocytochemical antiperoxidase (APAAP) technique using the monoclonal antibody MPO7. In each case the staining was evaluated by light microscopical examination (percentage of po...

Journal: :The Journal of clinical investigation 2013
Ying Huang Zhiping Wu Meliana Riwanto Shengqiang Gao Bruce S Levison Xiaodong Gu Xiaoming Fu Matthew A Wagner Christian Besler Gary Gerstenecker Renliang Zhang Xin-Min Li Anthony J DiDonato Valentin Gogonea W H Wilson Tang Jonathan D Smith Edward F Plow Paul L Fox Diana M Shih Aldons J Lusis Edward A Fisher Joseph A DiDonato Ulf Landmesser Stanley L Hazen

Myeloperoxidase (MPO) and paraoxonase 1 (PON1) are high-density lipoprotein-associated (HDL-associated) proteins mechanistically linked to inflammation, oxidant stress, and atherosclerosis. MPO is a source of ROS during inflammation and can oxidize apolipoprotein A1 (APOA1) of HDL, impairing its atheroprotective functions. In contrast, PON1 fosters systemic antioxidant effects and promotes some...

Journal: :The Journal of clinical investigation 2001
M L Brennan M M Anderson D M Shih X D Qu X Wang A C Mehta L L Lim W Shi S L Hazen J S Jacob J R Crowley J W Heinecke A J Lusis

Myeloperoxidase (MPO), a heme enzyme secreted by activated phagocytes, generates an array of oxidants proposed to play critical roles in host defense and local tissue damage. Both MPO and its reaction products are present in human atherosclerotic plaque, and it has been proposed that MPO oxidatively modifies targets in the artery wall. We have now generated MPO-deficient mice, and show here tha...

Journal: :American journal of physiology. Lung cellular and molecular physiology 2008
Viktor Brovkovych Xiao-Pei Gao Evan Ong Svitlana Brovkovych Marie-Luise Brennan Xiao Su Stanley L Hazen Asrar B Malik Randal A Skidgel

The myeloperoxidase (MPO)-hydrogen peroxide-halide system is an efficient oxygen-dependent antimicrobial component of polymorphonuclear leukocyte (PMN)-mediated host defense. However, MPO deficiency results in few clinical consequences indicating the activation of compensatory mechanisms. Here, we determined possible mechanisms protecting the host using MPO(-/-) mice challenged with live gram-n...

Journal: :The Journal of clinical investigation 1984
O Stendahl B I Coble C Dahlgren J Hed L Molin

Patients lacking the primary granulae enzyme, myeloperoxidase (MPO), do not usually show any increased susceptibility to infection or altered inflammatory response, in contrast to several other biochemical defects in polymorphonuclear neutrophils. We have now evaluated the role of MPO on phagocyte function in a patient with complete MPO deficiency suffering from generalized pustular psoriasis. ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1987
S C Weil G L Rosner M S Reid R L Chisholm N M Farber J K Spitznagel M S Swanson

Myeloperoxidase (MPO), the most abundant neutrophil protein, is a bacteriocidal component of the primary granules and a critical marker in distinguishing acute myelogenous leukemia from acute lymphoid leukemia. A cDNA clone for human MPO was isolated by immunologic screening of human hematopoietic lambda gt11 expression vector libraries with specific anti-MPO antibody. The identity of the cDNA ...

Journal: :American journal of physiology. Heart and circulatory physiology 2003
Chunxiang Zhang Jian Yang Jonathan D Jacobs Lisa K Jennings

Vascular NAD(P)H oxidase-derived reactive oxygen species (ROS) such as hydrogen peroxide (H2O2) have emerged as important molecules in the pathogenesis of atherosclerosis, hypertension, and diabetic vascular complications. Additionally, myeloperoxidase (MPO), a transcytosable heme protein that is derived from leukocytes, is also believed to play important roles in the above-mentioned inflammato...

Journal: :Respiratory medicine 2013
Masaru Ando Eishi Miyazaki Toshihiro Ishii Yutaka Mukai Mari Yamasue Hideaki Fujisaki Takeo Ito Shin-ichi Nureki Toshihide Kumamoto

BACKGROUND Pulmonary fibrosis is a manifestation of microscopic polyangitis (MPA), and often precedes the detection of MPA. The prevalence and sequence of myeloperoxidase anti-neutrophil cytoplasmic antibody (MPO-ANCA) and MPA in patients initially diagnosed with idiopathic pulmonary fibrosis (IPF) have not been precisely elucidated. METHODS We enrolled 61 consecutive patients with IPF and me...

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