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The secretion and changes of inflammation mediators in myocardium of endotoxemia rats and its pathomorphological change
Author(s): 
Pages: 600-602
Year: Issue:  6
Journal: THE JOURNAL OF PRACTICAL MEDICINE

Keyword:  内毒素血症心肌炎症介导素类肿瘤坏死因子-α白细胞介素-1β;
Abstract: 目的:研究内毒素血症(ETM)大鼠血循环及心肌内重要炎性介质(TNF-α和IL-1β)的产生和变化情况,以及心肌组织形态学变化.方法:随机将大鼠分为正常对照组、ETM组(由尾静脉按3 mg/kg注射LPS引发ETM).采用放射免疫分析法检测不同时间点血循环及心肌内TNF-α和IL-1β含量.再通过病理形态学技术,观察心肌组织形态学改变.结果:正常大鼠血循环及心肌内含有一定量TNF-α和IL-1β.与正常对照组相比,ETM发生后,血循环及心肌内TNF-α和IL-1β含量均有不同程度的升高(P<0.05或P<0.01).病理形态学观察表明,ETM发生后,大鼠心肌组织表现出炎症改变,主要为充血、出血、渗出及炎性细胞浸润,以伤后24 h更为明显.结论:内毒素可致血循环及心肌内TNF-α和IL-1β过度分泌,并使心肌出现炎症反应.即内毒素诱导的TNF-α和IL-1β介质对于ETM心肌发病起重要作用.
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