Myeloperoxidase
MPOproteinMyeloperoxidase oxidizes LDL and generates reactive oxygen species in atherosclerotic plaques, promoting inflammation and endothelial dysfunction; also a marker of neutrophil extracellular trap formation and thrombotic activation in acute MI.
Pathway placement
Cascade stepPlaque inflammation
Confidencehigh
RationalePMN-derived oxidative enzyme driving LDL oxidation, plaque inflammation, and NET-mediated thrombosis.
Also acts inPlatelet activation
Druggability
DruggableYes
Known drugs / candidates1
Small-molecule tractableYes
Antibody tractableYes
EnsemblENSG00000005381
Type I vs Type II discrimination
ScoresType-II-associated
R — rupture / Type-I—
C — confounder / Type-II60
A — assay feasibility72
E — evidence strength12
T1DI (composite)2
Specificity differential (R−C)-45
Confounder panel (Type-II drivers)
1sepsis / systemic inflammationmag 2
2anemia / acute blood lossmag 2
3hypovolemia / dehydrationn/a
4tachyarrhythmiamag 2
5hypoxemia / respiratory failuremag 2
6hypertensive emergencymag 1
7high-demand / peri-operative stressn/a
Coverage: 5/7 confounders with evidence
Tier: deep-scored (abstract-extracted) · 9 supporting references. See the discrimination table for all markers.
Assay & specimen
Validated clinical assay
Specimen
Serum or plasma (EDTA)
Collection tube
K2/K3-EDTA (lavender-top) · Serum separator (gold/red-top, SST)
Method / principle
Sandwich immunoassay / ELISA
Reagent / substrate
Anti-MPO antibody pair
Platform
ELISA/automated
Turnaround · availability
Send-out · CE/research
Human genetic evidence
0.004
Open Targets association (NSTEMI)
Literature evidence(40)
- Intracoronary Imaging and Transcriptomic Characteristics Before and After Maximum Lipid-Lowering Therapy: YELLOW-III Study of Evolocumab and Maximum Statin Therapy in Chronic Coronary Disease.JACC. Cardiovascular imaging · 2026 · PMID 41758107 · doi
- Double-stranded DNA enhances platelet activation, thrombosis, and myocardial injury via cyclic GMP-AMP synthase.Cardiovascular research · 2025 · PMID 39302147 · doi
- Costunolide Reduces DN Inflammatory Response and Renal Thrombosis by Inhibiting NET Formation.Journal of diabetes research · 2025 · PMID 40709100 · doi
- Characterization of Neutrophil Extracellular Traps in Acute Myocardial Infarction: A Translational Study.Journal of cardiovascular translational research · 2025 · PMID 40900282 · doi
- Comprehensive Quality Analysis of Conventional and Novel Biomarkers in Diagnosing and Predicting Prognosis of Coronary Artery Disease, Acute Coronary Syndrome, and Heart Failure, a Comprehensive Literature Review.Journal of cardiovascular translational research · 2024 · PMID 38995611 · doi
- Theeffect of myeloperoxidase oxidized LDL on THP-1 derived macrophages.Innate immunity · 2024 · PMID 39090856 · doi
- Biomarkers and cardiovascular events in patients with stable coronary disease in the ISCHEMIA Trials.American heart journal · 2023 · PMID 37604357 · doi
- Myeloperoxidase-Oxidized LDL Activates Human Aortic Endothelial Cells through the LOX-1 Scavenger Receptor.International journal of molecular sciences · 2022 · PMID 35269979 · doi
- The effect of myeloperoxidase-oxidized LDL on THP-1 macrophage polarization and repolarization.Innate immunity · 2022 · PMID 35404154 · doi
- Inflammatory biomarkers and risk of cardiovascular events in patients undergoing coronary angiography.American heart journal · 2022 · PMID 35753356 · doi
- Restricted T-Cell Repertoire in the Epicardial Adipose Tissue of Non-ST Segment Elevation Myocardial Infarction Patients.Frontiers in immunology · 2022 · PMID 35880176 · doi
- Oral pre-treatment with thiocyanate (SCN) protects against myocardial ischaemia-reperfusion injury in rats.Scientific reports · 2021 · PMID 34135432 · doi
- A Review of Novel Cardiac Biomarkers in Acute or Chronic Cardiovascular Diseases: The Role of Soluble ST2 (sST2), Lipoprotein-Associated Phospholipase A2 (Lp-PLA2), Myeloperoxidase (MPO), and Procalcitonin (PCT).Disease markers · 2021 · PMID 34422136 · doi
- High Plasma Myeloperoxidase Is Associated with Plaque Erosion in Patients with ST-Segment Elevation Myocardial Infarction.Journal of cardiovascular translational research · 2020 · PMID 32314165 · doi
- Associations between ambient wood smoke and other particulate pollutants and biomarkers of systemic inflammation, coagulation and thrombosis in cardiac patients.Environmental research · 2017 · PMID 28167447 · doi
- Circulating Extracellular DNA: Cause or Consequence of Thrombosis?Seminars in thrombosis and hemostasis · 2017 · PMID 28359134 · doi
- Myeloid-related protein-8/14 in acute coronary syndrome.International journal of cardiology · 2017 · PMID 28986057 · doi
- Beyond Cholesterol - New Cardiovascular Biomarkers.Nestle Nutrition Institute workshop series · 2016 · PMID 26764476 · doi
- ApoA1 and ApoA1-specific self-antibodies in cardiovascular disease.Laboratory investigation; a journal of technical methods and pathology · 2016 · PMID 27183204 · doi
- Time dependent apoptotic rates in the evolving coronary thrombus mass of myocardial infarction patients.Thrombosis research · 2016 · PMID 27423322 · doi
- The roles of myeloperoxidase in coronary artery disease and its potential implication in plaque rupture.Redox report : communications in free radical research · 2016 · PMID 27884085 · doi
- Relation of baseline plasma MMP-1 levels to long-term all-cause mortality in patients with known or suspected coronary artery disease referred for coronary angiography.Atherosclerosis · 2015 · PMID 25635325 · doi
- Associations between circulating proteins and corresponding genes expressed in coronary thrombi in patients with acute myocardial infarction.Thrombosis research · 2015 · PMID 26475405 · doi
- Coronary thrombus composition: links with inflammation, platelet and endothelial markers.Atherosclerosis · 2014 · PMID 25463088 · doi
- Obesity superimposed on aging magnifies inflammation and delays the resolving response after myocardial infarction.American journal of physiology. Heart and circulatory physiology · 2014 · PMID 25485899 · doi
- Coronary neutrophil extracellular trap burden and deoxyribonuclease activity in ST-elevation acute coronary syndrome are predictors of ST-segment resolution and infarct size.Circulation research · 2014 · PMID 25547404 · doi
- Potential clinical application of novel cardiac biomarkers for acute myocardial infarction.Acta medica Indonesiana · 2013 · PMID 24045397
- Is there a clinical role for oxidative stress biomarkers in atherosclerotic diseases?Internal and emergency medicine · 2013 · PMID 24057419 · doi
- Neutrophils, neutrophil extracellular traps and interleukin-17 associate with the organisation of thrombi in acute myocardial infarction.Thrombosis and haemostasis · 2012 · PMID 23238559 · doi
- Current role of myeloperoxidase in routine clinical practice.Expert review of cardiovascular therapy · 2011 · PMID 21453218 · doi
- Markers of plaque instability in the early diagnosis and risk stratification of acute myocardial infarction.Clinical chemistry · 2011 · PMID 22057876 · doi
- Biomarkers in acute myocardial infarction.BMC medicine · 2010 · PMID 20529285 · doi
- Novel biomarkers in cardiovascular disease: update 2010.American heart journal · 2010 · PMID 20934551 · doi
- High levels of systemic myeloperoxidase are associated with coronary plaque erosion in patients with acute coronary syndromes: a clinicopathological study.Circulation · 2010 · PMID 21126969 · doi
- Up-and-coming markers: myeloperoxidase, a novel biomarker test for heart failure and acute coronary syndrome application?Congestive heart failure (Greenwich, Conn.) · 2008 · PMID 18772634 · doi
- Non-traditional biomarkers of atherosclerosis in stable and unstable coronary artery disease, do they differ?Acute cardiac care · 2007 · PMID 17924231 · doi
- The potential role of antiplatelet agents in modulating inflammatory markers in atherothrombosis.Journal of thrombosis and haemostasis : JTH · 2006 · PMID 16961584 · doi
- Plasma markers of platelet and polymorphonuclear leukocyte activation in young adults with acute myocardial infarction.Clinical hemorheology and microcirculation · 2005 · PMID 15665428
- [Acute coronary syndrome and inflammation. Biomarkers for diagnostics and risk stratification].Herz · 2004 · PMID 15599673 · doi
- Prognostic value of myeloperoxidase in patients with chest pain.The New England journal of medicine · 2003 · PMID 14573731 · doi
Clinical trials(1)
- Myeloperoxidase and Multi-Markers In the Diagnosis of Diagnoses of Acute Coronary Syndrome (MIDAS) - Sample ProcurementNCT00415948 · COMPLETED · Biomarkers