机构地区:[1]中国医科大学附属盛京医院儿科,辽宁沈阳110004
出 处:《中国危重病急救医学》2011年第12期723-726,共4页Chinese Critical Care Medicine
基 金:辽宁省自然科学基金资助项目(20052091);辽宁省沈阳市科技局科研基金资助项目(1063230-3-00)
摘 要:目的通过对比小儿心肌炎、肌病时血清中肌酸激酶同工酶(CK~MB)质量与肌钙蛋白I(cTnI)和肌红蛋白(Mb)的动态变化,观察CK—MB质量在判定心肌损伤中的意义。方法测定40例心肌炎患儿(其中有20例为暴发性心肌炎)和38例肌病患儿的肌酸激酶(CK)、CK—MB活性、CK—MB质量、cTnI、Mb、心电图以及脉冲多普勒超声心动图;肌病组同时进行肌电图、遗传代谢病筛查以及基因检测。以同期本院发育儿科门诊除外甲状腺功能减低症的10例身矮待查儿童为对照。结果①健康对照组儿童CK(U/L)为95.0±27.0,CK—MB活性(U/L)为22.6±1.3,CK—MB质量(μg/L)为2.4±0.3,cTnI(μg/L)为0.012±0.001。②心肌炎组患儿治疗前CK(1033.0±408.0)、CK—ME活性(101.2±31.5)、CK~MB质量(38.2±13.2)、cTnI(5.544±1.554)均较健康对照组明显升高(均P〈O.01);随着治疗时间延长,各项指标逐渐下降;治疗2周后CK(59.3±25.1)、CK—MB活性(24.6±13.2)、CK~MB质量(3.3±2.9)、cTnI(0.125±0.128)均恢复至正常水平(均P〉O.05)。治疗1周后CK、CK—MB质量增高率即较治疗前明显下降[CK:5.9%(1/17)比56.4%(22/39);CK—MB质量:8.3%(1/12)比61.1%(22/36),均P〈0.01],CK—MB质量恢复先于cTnI,增高率出现明显差异(8.3%(1/12)比73.7%(14/19),P〈O.05]。③肌病组治疗前CK(10193.0±1447.0)、CK—MB活性(311.7±44.4)以及CK—MB质量(229.2±47.9)均较健康对照组明显升高(均P〈0.01),但cTnI不高(0.021±0.002);治疗2周后CK(5735.6±6187.8)、CK—MB活性(170.7±143.0)、CK—MB质量(207.4±136.6)仍维持在高水平,cTnI(0.230±0.150)则维持在正常水平;各项指标的增高率与治疗前均无显著差异[CK:85.7%(6�Objective To examine the changes in serum MB isoenzyme of creatine kinase mass (CK-MB mass), cardiac troponin I (cTnI), and myoglobulin (Mb) in children with myocarditis and muscular disease in order to evaluate the significance of index CK-MB mass for the diagnosis of myoeardium injury in these diseases. Methods Blood samples were collected from 40 children with myocarditis, 38 children with muscular diseases, and 10 healthy children, for the measurement of creatine kinase (CK), CK-MB activity, CK-MB mass, cTnI, and Mb. Myocarditis patients also received electrocardiogram and pulse Doppler electrocardiogram examination while muscular diseases patients were subjected to electro-myographic examination, inherit-metabolic diseases screening and related gene analysis. The data were analyzed for differences between groups, and differences between values before and after the treatment. Results In comparison with healthy controls (CK (U/L): 95.0 ± 27.0, CK-MB activity (U/L): 22.6 ± 1.3, CK-MB mass (μg/L): 2.4±0. 3, cTnI (μg/L) : 0. 012±0. 0013, the patients with myocarditis had significantly (all P±0. 01) higher mean values in CK (1 033.0±408. 0), CK-MB activity (101.2±31.5), CK-MB mass (38. 2± 13.2) and cTnI (5. 54± 1. 554) before the treatment. After 2 weeks of treatment these indexes returned to the level of controls, with cTnI responded the last (CK: 59. 3± 25.1, CK-MB activity: 24. 6± 13.2, CK-MB mass: 3.3±2.9, eTnI: 0. 125±0. 128). One week after treatment, the incidences of CK and CK-MB mass elevation were significantly lower than the values before the treatment [CK: 5.9% (1/17) vs. 56.4% (22/39); CK-MB mass.. 8.3% (1/12) vs. 61.1% (22/36), both P〈0.01], with the change in CK-MB mass appeared significantly earlier than cTnI (8.3% (1/12) vs. 73.7% (14/19), P〈0. 05]. The patients with muscular disease also had significantly elevated mean value in CK (10 193.0 ± 1 447.0), CK-MB activity (31
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