秋水仙碱对心肌梗死后大鼠预后的影响

Effect of Colchicine on the Prognosis of Rats After Myocardial Infarction

目的研究秋水仙碱对心肌梗死(myocardial infarction,MI)大鼠预后的影响。方法40只雄性SD大鼠随机分为假手术(Sham)组、心肌梗死+空白溶剂(MI)组、心肌梗死+秋水仙碱灌胃治疗(MI+Col/i.g)组及心肌梗死+秋水仙碱心肌内注射(MI+Col/i.m)组,每组10只。记录大鼠体质量及死亡情况,干预28天后取材,采集大鼠超声心动图,采用酶联免疫吸附法检测血清炎性细胞因子及肝、肾功能指标。取心脏组织,行Masson染色,光镜下分析心肌纤维化程度。结果秋水仙碱治疗未能显著提升大鼠MI后28天内生存率。但与MI组比较,MI+Col/i.g组及MI+Col/i.m组均能明显降低血清炎性细胞因子(P<0.05),抑制MI后心肌纤维化,改善MI大鼠心功能(P<0.001),且均未造成与之相关的肝肾功能损伤,且MI+Col/i.m组体质量较MI+Col/i.g组显著增长(P<0.001)。结论秋水仙碱口服及心肌内注射治疗MI大鼠安全可行,能显著改善MI大鼠心功能,且心肌内注射相较于口服能大幅提升大鼠对药物的耐受性。

Objective To investigate the effect of Colchicine on the prognosis of acute myocardial infarction(MI)in rats.Methods A total of 40male Sprague Dawley rats were randomly divided into 4groups:Sham operation group,MI+BLS(blank solvent)group,MI+Colchicine treatment group(MI+col/i.g),and MI+Colchicine intramyocardial injection(MI+col/i.m)group,with 10 rats in each group.We euthanized the rats 28days after modeling,recorded the rats′body weight and death,collected echocardiography,detected the levels of serum inflammatory factors,liver and kidney functions by enzyme-linked immunosorbent assay(ELISA),stained the cardiac tissue samples by Masson,and analyzed the degree of myocardial fibrosis under Optical microscope.Results The survival rate within 28days after MI was not significantly improved by Colchicine.Compared with the model group,both Colchicine intragastric administration and intramyocardial injection could significantly reduce the serum inflammatory factors(P<0.05),inhibit the myocardial fibrosis,and improve the cardiac function of the rats after MI(P<0.001).The liver and kidney functions were not damaged in the Colchicine and intramyocardial injection groups,and the intramyocardial injection group could effectively alleviate the weight loss induced by systemic administration(P<0.001).Conclusion Colchicine is safe and feasible in the treatment of MI in rats,it can significantly improve the cardiac function of rats after MI,and intramyocardial injection can effectively and significantly increase the tolerance of colchicine.