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目的:评价外周血红细胞源微粒对于急性冠状动脉综合征(ACS)诊断的临床意义.方法:2015-01至2016-09在我院心内科住院并符合本研究纳入标准的患者150例,分为非冠心病(Non-CAD)组(n=45)、ACS组(n=105);ACS组患者包括急性ST段抬高型心肌梗死患者(STEMI,n=37)、非ST段抬高型心肌梗死患者(Non-STEMI,n=31)和不稳定性心绞痛患者(UAP,n=37).收集研究对象外周静脉血,离心后加入钙离子载体A23187,得到微粒.用特异性红细胞源微粒抗体(glycophorine A CD235a)标记红细胞微粒,然后经流式细胞仪进行定性定量分析.结果:ACS组外周血中红细胞源微粒水平(％)为26.20[15.90,38.00],Non-CAD组红细胞源微粒水平(％)为14.00[4.35,36.35],ACS组高于Non-CAD组(P0.05).结论:ACS患者外周血红细胞源微粒水平高于Non-CAD,提示外周血红细胞源微粒水平的升高可能参与ACS发生、发展过程,可能与ACS患者发生急性血栓事件相关.“,”Objective: To assess the clinical significance of peripheral blood levels of erythrocyte micro-particles on acute coronary syndrome (ACS) diagnosis. Methods: A total of 150 patients treated in our hospital from 2015-01 to 2016-09 were enrolled in this study. The patients were divided into 2 groups: Non-CAD (coronary artery disease) group, n=45 and ACS group, n=105. ACS group was further divided into 3 subgroups: STEMI (acute ST-segment elevation myocardial infarction) subgroup, n=37, Non-STEMI subgroup, n=31 and UAP (Unstable angina pectoris) subgroup, n=37. Peripheral blood sample was collected, erythrocyte micro-particles were separated by Ca2+ vector A23187 method and relevant micro-particles were labeled by specific antibody (glycophorine A) for qualitative and quantitative flow cytometry analysis. Results: Compared with Non-CAD group, ACS group had the higher peripheral level of erythrocyte micro-particles [％, 26.20 (15.90, 38.00) vs 14.00 (4.35, 36.35), P0.05. Conclusion: Peripheral blood levels of erythrocyte micro-particles were elevated in ACS patients which implied it may involve ACS development and could be related to acute thrombosis event in ACS patients.