EXPERIMENTAL STUDY ON CONGESTION-REPERFUSION INJURY TO SMALL INTESTINE IN RATS
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摘要: 目的研究淤血再灌注对大鼠小肠的损伤作用.方法 SD大鼠20只,采用阻断门静脉60 min开放60 min的方法建立大鼠小肠淤血再灌注模型;于小肠淤血前、淤血60 min和再灌注60 min时分别取末段回肠标本,观察和比较各时间点小肠黏膜的损伤情况,同时测定肠组织中丙二醛(MDA)含量和髓过氧化物酶(MPO)活性的变化.结果淤血前肠黏膜基本正常,淤血60 min后肠黏膜出现损伤,但组织中MDA含量及MPO活性与淤血前相比无明显变化;再灌注60 min后肠黏膜损伤较淤血60 min时进一步加重,且组织中MDA含量及MPO活性亦显著增高.结论淤血后血流再灌注可致肠组织出现淤血再灌注损伤;脂质过氧化损伤及中性粒细胞浸润可能是参与肠组织淤血再灌注损伤的重要因素.
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