The Expression and Significance of Myeloperoxidase in Acute Lungs Injury of Severe Acute Pancreatitis Associated Ascetic Fluid / 医学研究杂志

ABSTRACT

Objective To investigate the expression and significance of myeloperoxidase(MPO) in acute lungs injury of severe acute pancreatitis associated ascetic fluid. Methods Forty-five adult wistar rats were randomly assigned into the group of negative control (group C,n=15),the group of severe acute pancreatitis (group S,n=15) and the group of peritoneal injection (group E,n=15). The group C was cut peritoneum and flipped pancreases softly. In group S,3.5% sodium taurocholate was injected retrograde in pancreatic and bile duct to establish the model of severe acute pancreatitis,and the pancreatic homogenate and ascites of the group S was injected into abdominal cavity of group E rats. After animal model established,rats were killed at 3h,6h and 12h point. The blood of inferior vena cava was sucked for determination of amylase.The inferior lobe of left lung was cut for myeloperoxidase detection.And pathology was regularly done about pancreas and lungs. Results Interstitial edema,hemorrhage and infiltration of neutrophilic granulocyte and macrophage were observed in group S and E. At different time point,the amylase levels of blood and myeloperoxidase of lungs in group S and E were significantly higher than those of group C,and the increasing degree of group E was smaller than group S. Conclusion Acute lung injury can be induced by the severe acute pancreatitis associated ascetic fluid. The expression of myeloperoxidase of lungs was increased to induce acute lungs injury.The reason may be concerned with activation of granulocyte by severe acute pancreatitis associated ascetic fluid.