PMID- 27604056 OWN - NLM STAT- MEDLINE DCOM- 20170328 LR - 20170817 IS - 1473-5830 (Electronic) IS - 0954-6928 (Linking) VI - 28 IP - 1 DP - 2017 Jan TI - Altered human neutrophil FcgammaRI and FcgammaRIII but not FcgammaRII expression is associated with the acute coronary event in patients with coronary artery disease. PG - 63-69 AB - OBJECTIVE: Neutrophils enhancing atherosclerotic plaque instability have been observed in patients with acute coronary syndrome (ACS). Generally, activation of neutrophils in lesions depends on the interaction of Fcgamma receptors (FcgammaRs) with immunoglobulin G antibodies in immune complexes. However, altered FcgammaR expression on neutrophils of patients with ACS is unknown. We aimed to evaluate changes in FcgammaR expression on neutrophils of patients with ACS. METHODS: We enrolled 106 patients who were divided into four groups: acute myocardial infarction (AMI), unstable angina (UA), stable angina, and normal coronary arteries. The expressions of FcgammaRI, FcgammaRII, and FcgammaRIII on neutrophils and related upstream ligand and downstream molecules were measured by flow cytometry and enzyme-linked immunosorbent assay. RESULTS: The expression of unbound FcgammaRI was significantly decreased in AMI and UA patients and that of unbound FcgammaRIII was significantly decreased in AMI patients, with no difference in the expression of unbound FcgammaRII among the four groups. In contrast, plasma levels of antioxidized LDL antibody, myeloperoxidase, matrix metalloproteinase-9, and neutrophil gelatinase-associated lipocalin were significantly greater in AMI and UA than in stable angina and normal coronary arteries patients. CONCLUSION: Unbound FcgammaRI and FcgammaRIII expression was decreased on neutrophils of patients with ACS, which reflects a potential role of disturbed FcgammaRI and FcgammaRIII expression in the destabilization of atherosclerotic plaque. Our findings may provide insight into the mechanism underlying culprit plaque-relevant activation of neutrophil FcgammaRs in ACS patients. FAU - Zhao, Na AU - Zhao N AD - aDepartment of Cardiovascular Medicine, Shaanxi Province People's Hospital Departments of bCardiovascular Medicine cHepatobiliary Surgery ICU, First Affiliated Hospital of Medical College, Xi'an Jiaotong University dDepartment of Ophthalmology Medicine, Xi'an IV People's Hospital, Xi'an, Shaanxi eKey Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Medical Affairs, Peking University Cancer Hospital & Institute, Beijing, China. FAU - Mi, Lan AU - Mi L FAU - Zhang, Yaping AU - Zhang Y FAU - Li, Na AU - Li N FAU - Xu, Jiaojiao AU - Xu J FAU - Xia, Dongyu AU - Xia D FAU - Wang, Junkui AU - Wang J FAU - Wu, Yue AU - Wu Y FAU - Liu, Xiaojun AU - Liu X LA - eng PT - Comparative Study PT - Journal Article PL - England TA - Coron Artery Dis JT - Coronary artery disease JID - 9011445 RN - 0 (Biomarkers) RN - 0 (FCGR1A protein, human) RN - 0 (Receptors, IgG) SB - IM MH - Acute Coronary Syndrome/*blood/diagnosis MH - Aged MH - Angina, Stable/*blood/diagnosis MH - Angina, Unstable/*blood/diagnosis MH - Biomarkers/blood MH - Coronary Angiography MH - Coronary Artery Disease/*blood/diagnosis MH - Down-Regulation MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Flow Cytometry MH - Humans MH - Male MH - Middle Aged MH - Myocardial Infarction/*blood/diagnosis MH - Neutrophil Activation MH - Neutrophils/*metabolism MH - Prognosis MH - Receptors, IgG/*blood EDAT- 2016/09/08 06:00 MHDA- 2017/03/30 06:00 CRDT- 2016/09/08 06:00 PHST- 2016/09/08 06:00 [pubmed] PHST- 2017/03/30 06:00 [medline] PHST- 2016/09/08 06:00 [entrez] AID - 10.1097/MCA.0000000000000425 [doi] PST - ppublish SO - Coron Artery Dis. 2017 Jan;28(1):63-69. doi: 10.1097/MCA.0000000000000425.