摘要目的 探讨髓过氧化物酶(MPO)水平与急性冠状动脉综合征(ACS)发生、发展及冠状动脉病变程度的关系.方法 选择78例因胸痛住院的患者,其中ACS患者41例(ACS组),稳定型心绞痛(SAP)患者17例(SAP组),其余20例患者作为对照组.78例患者中行冠状动脉造影患者41例,按病变累及左前降支、左回旋支及右冠状动脉的支数分为单支病变组(7例)、双支病变组(7例)、多支病变组(12例)及无病变组(15例),按主要冠状动脉直径狭窄程度分为无狭窄组15例、轻度狭窄组2例、中度狭窄组6例、重度狭窄组18例.采用酶联免疫吸附法测定各组血浆MPO水平并进行比较.结果 ACS组血浆MPO水平[(252.10±27.07)μg/L]显著高于SAP组[(185.81±17.85)μg/L]和对照组[(140.42±71.40)μg/L](P＜O.05),SAP组血浆MPO水平显著高于对照组(P＜0.05).单支病变组、多支病变组血浆MPO水平均高于无病变组(P＜ 0.05),但在单支、双支、多支病变组之间比较差异无统计学意义(P＞0.05).冠状动脉轻度、中度、重度狭窄组血浆MPO水平均高于无狭窄组(P＜0.05),但在轻度、中度、重度狭窄组之间比较差异无统计学意义(P＞0.05).血浆MPO水平与中性粒细胞计数(r=0.288,P=0.018)、肌酸激酶同工酶-MB(r=0.469,P=0.043)、受试组(r=0.757,P=0.000)、冠状动脉病变支数(r=0.584,P=0.000)及冠状动脉狭窄程度(r=0.491,P=0.001)呈正相关.结论 MPO是一种预测ACS的炎性反应标志物,并能反映冠状动脉病变程度.

abstractsObjective To research the relationship between the plasma levels of myeloperoxidase (MPO) and the onset and progress of acute coronary syndrome (ACS) and the severity of coronary lesions in patients with ACS.Methods Seventy-eight patients hospitalized with chest pain were enrolled,including 41 patients with ACS (ACS group),17 patients with stable angina pectoris (SAP,SAP group) and 20 patients serving as control (control group).Forty-one patients undergoing coronary angiography were divided into single vessel lesions group (7 patients),double vessel lesions group (7 patients),multiple vessel lesions group ( 12 patients) and no vessel lesions group ( 15 patients) based on the vessel lesions of the left anterior descending,left circumflex artery and right coronary artery.According to the diameter stenosis of major coronary artery,there were 15 patients in no vascular stenosis group,2 patients in mild vascular stenosis group,6 patients in moderate vascular stenosis group and 18 patients in severe vascular stenosis group.The levels of MPO were measured by enzyme-linked immunosorbent assays (ELISA).Results The levels of MPO in ACS group [( 252.10 ± 27.07 ) μ g/L]were higher than those in SAP group[( 185.81 ± 17.85 ) μ g/L]and control group [( 140.42 ± 71.40) μ g/L](P ＜ 0.05 ),the levels of MPO in SAP group were higher than those in control group(P＜ 0.05 ).The levels of MPO in single vessel lesions group and multiple vessel lesions group were higher than those in no vessel lesions group (P ＜ 0.05 ),but there was no significant difference among single vessel lesions group,double vessel lesions group and multiple vessel lesions group (P ＞ 0.05 ).The levels of MPO in mild vascular stenosis group,moderate vascular stenosis group and severe vascular stenosis group were higher than those in no vascular stenosis group (P ＜ 0.05),but there was no significant difference among mild vascular stenosis group,moderate vascular stenosis group and severe vascular stenosis group (P ＞ 0.05 ).A positive correlation was observed between the levels of MPO and neutrophils (r =0.288,P=0.018 ),creatine kinase isoenzyme-MB(r =0.469,P=0.043 ),subject groups( r =0.757,P=0.000),vessel lesions (r =0.584,P=0.000) and the degree of vascular stenosis (r =0.491,P=0.001).Conclusion MPO may predict ACS and reflect the severity of coronary lesions in ACS as a novel inflammatory marker.