AngII受体拮抗剂对急性胰腺炎影响的研究

The Effects of Antagonist of Angiotensin II Receptors on Rat Acute Pancreatitis

目的 探讨血管紧张素II(AngII)受体拮抗剂对急性胰腺炎 (AP)炎症的影响。方法 SD大鼠随机分为正常对照组、AP组、AP +低剂量缬沙坦 (5mg/kg)组、AP +高剂量缬沙坦组 (8mg/kg)、低剂量缬沙坦组、高剂量缬沙坦组 (每组 6只 ) ;腹腔注射雨蛙肽建立AP动物模型 ;缬沙坦用灌胃针灌注。观察胰腺病理变化并评分 ,评估胰腺水肿情况 ,检测血清淀粉酶 (AMY) ,胰腺组织髓过氧化物酶 (MPO)。结果 AP +缬沙坦的两组胰腺水肿程度、AMY、MPO与AP组比较均下降 ,胰腺组织病理学评分也有所降低。结论 应用AngII受体拮抗剂的AP动物模型可以明显减轻胰腺的炎症及损伤。

Objective To explore the effects of antagonist of angiotensin II(Ang II) receptors on acute pancreatitis(AP) of rats. Methods The Sprague-Dawley rats were divided randomly into normal group, AP group, AP+lower dose of valsartan(5mg/kg) group , AP+higher dose of valsartan(8mg/kg) group, lower dose of valsartan group and higher dose of valsartan group, and each group containing 6 animals. AP animal models were induced by intraperitoneal injection of cerulein. Valsartan was given by intragastric administration. The histopathological changes of pancreas were observed and scored, and the pancreatic edema was evaluated. The levels of plasma amylase (AMY) and pancreatic myeloperoxidase (MPO) were measured. Results Compared with AP group, the pathologic lesions of pancreas and pancreatic edema decreased in the group AP+ valsartan, and the levels of plasma AMY and MPO also reduced. Conclusion Pretreatment with antagonist of angiotensin II receptors in rat acute pancreatitis can markedly reduce pancreatic injury and inflammation.