肠型脂肪酸结合蛋白对肠缺血早期诊断的意义

The role of intestinal fatty acid-binding protein as a marker in the early diagnosis of intestinal ischemia

目的 探讨肠型脂肪酸结合蛋白 (IFABP)对肠缺血早期诊断的意义。方法 将SD大鼠随机分成对照组和肠系膜上动脉结扎组 (SMA组 ) ,分别于术前及术后 1,2 ,4h取血 ,检测各时点的血清IFABP、肌酸激酶 (CK )、肌酸激酶BB型同工酶 (CK BB)和乳酸脱氢酶 (LDH )。结果 对照组血清I FABP水平在各时点均无明显差异 (P >0 .0 5 )。SMA组结扎后 1h血清IFABP水平迅速增加 ,与对照组相比 ,差异具显著性 (P <0 .0 1) ;结扎 2h达高峰。血清中CK ,CK BB和LDH活性均随缺血时间的延长而出现升高趋势。与对照组相比 ,各组CK ,CK BB和LDH出现显著性升高的时间依次为缺血后1,2 ,4h(P <0 .0 5 )。结论 IFABP是小肠缺血性疾病的早期、特异、敏感的生化诊断指标。

Objective To investigate the role of intestinal fatty acid-binding protein(IFABP) as a marker in the (early) diagnosis of intestinal ischemia. Methods SD rats were randomly divided into control group and superior mesenteric artery ligation group (SMA group). Blood samples were collected sequentially at pre-operation, 1, 2 and 4 hours after operation for detecting the activity of IFABP, CK, CK-BB and LDH. Results The activity of IFABP in SMA group elevated 1h and arrived to a peak at 2 hours postoperatively. Compared with control group, all the (levels) of CK, CK-BB and LDH in SMA group were elevated progressively with time after operation. Compared with control group, the significant elevation was at 1, 2 and 4 hours after opration. Conclusions I-FABP is a sensitive and specific marker in the diagnosis of intestinal ischemia.