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[ ABSTRACT ] AIM: To investigate the protect effect of Chinese herbal preparation, Qing Yi TangⅡgranule (QYT), on acute pancreatitis (AP) mice and its mechanism.METHODS:Adult male and female C57BL/6 mice (n=24) were randomly divided into control group, AP group and AP+QYT group.Severe AP was induced by combined intra-peritoneal injection of caerulein (50μg/kg) and lipopolysaccharide (LPS;10 mg/kg).Drinking water or 24%QYT solu-tion was given to the mice in AP group or AP+QYT group by oral gavage.The mice in control group were intraperitoneally injected with equivalent volume of normal saline and gavaged with water.The mice were sacrificed 3 h after the last injec-tion.Severity of AP was assessed by biochemical markers and histology.The plasma level of IL-6 and MCP-1, and lung myeloperoxidase ( MPO) levels were determined for assessing the extent of systemic inflammatory response.The intestinal microflora, T lymphocytes and T-lymphocyte subgroups were examined for assessing the function of the intestinal barrier. RESULTS:Compared with control group, the mice in AP group presented significant increases in pathological histological scores, plasma amylase activity and IL-6 and MCP-1 levels, as well as the MPO activity in the lung and pancreatic tissues. QYT attenuated these changes to some extent.Furthermore, the increased intestinal microflora was significantly reversed by QYT.No difference of the numbers of Peyer’ s patches in small intestine in the 3 groups was observed, but the percentage of CD3 +T lymphocytes decreased significantly in AP group, and increased percentage of CD4 +and CD4 +/CD8 +ratio were found in AP group and AP+QYT group.CONCLUSION: QYT protects against cearulein and LPS-induced acute pancreatitis in mice.The mechanisms may be related to the suppression of the inflammatory response, promoting intestinal bacteria removal, and regulating the functions of T lymphocytes in the intestinal barrier.
ABSTRACT
Objective To study the effect of Qing Yi Tang(QYT) on bacterial and endotoxin translocation from intestine in acute hemorrhagic necrotizing pancreatitis(AHNP) in rats.Methods SD rats were randomly divided into 3 groups: AHNP group,AHNP +QYT treatment group and sham operation(SO) group.AHNP models were set up in the former two group,while the pancreas was only mobilized in SO group.After setting up the model,QYT was gavaged in the QYT group,while normal saline was gavaged in the SO group and AHNP group.The concentration of endotoxin(ET) and the DNA of E.coli expressoin in portal vein blood in three groups of rats were measured 24h later.Results The concentration of ET and amount of E.coli DNA in portal vein of QYT group were lower than those of AHNP group.Conclusions QYT can reduce significantly the concentration of ET and E.coli DNA in portal vein blood and decrease bacterial and endotoxin translocation from intestine in the AHNP rats.