摘要
目的探讨脑钠肽(BNP)在实验性大鼠急性心肌梗死(AMI)早期4 h内的变化。方法25只Wistar大鼠制作AMI模型,20只大鼠行假手术作为对照组,两组实验前后作心肌电镜观察。采用双抗体夹心酶联免疫吸附试验(ELISA)法检测实验前后1~4 h大鼠血清BNP和心肌肌钙蛋白I(cTnI)浓度。结果成功建立AMI模型后1~4 h,大鼠血清BNP浓度较实验前和对照组显著升高(P均<0.01),以实验后2h大鼠血清BNP浓度最高(520.66±16.85)ng/L;AMI组大鼠1~4 h血清cTnI浓度较实验前及对照组差异无统计学意义(P均>0.05)。自建立AMI模型后1~4 h,大鼠血清BNP浓度与AMI范围呈显著正相关,以2 h大鼠血清BNP浓度与AMI范围相关性最高(r=0.69,P<0.05)。对照组实验前后血清BNP和cTnI浓度差异无统计学意义(P均>0.05)。结论BNP可以作为提示早期AMI并可以同时预测梗死区大小的生化标志物。
Objective To explore the changes of brain natriuretic peptide(BNP) concentrations in experimental rats with acute myocardial infarction(AMI) in 1-4h.Methods Twenty-five Wistar rats were established for models of AMI and 20 sham-operated rats served as the control group.The myocardium of the two groups was observed by transmission electron microscopy(TEM) before and after the experiment. Double-antibody sandwich enzyme-linked immunosorbent assay(ELISA) was used to detect serum BNP and cardiac troponin I(cTnI...
出处
《山东大学学报(医学版)》
CAS
北大核心
2009年第9期40-43,共4页
Journal of Shandong University:Health Sciences
关键词
脑钠肽
急性心肌梗死
早期诊断
模型
动物
大鼠
WISTAR
Brain natriuretic peptide
Acute myocardial infarction
Early diagnosis
Models
animal
Rats
Wistar