Objective To investigate the effects of Dai Huang Fu Zi Tang(DHFZT)on ultrastructure and ion pump of mitochondria in intestinal epithelial cells(IECs)of rats with severe acute pancreatitis(SAP). Methods Seventy-two SD rats were randomly divided into three groups:sham-operated group(No SAP with 0.9% NaCl enema), model group(SAP with 0.9% NaCl enema), and treatment group(SAP with DHFZT), and each group was then subdivided into 1, 3, 6, and 12 h subsets(n= 6 each).SAP models were established by retrograde injection of 5% sodium taurocholate(4 ml/kg)into the pancreatic bile duct in model group and treatment group.Serum intestinal fatty acid binding protein(iFABP)and diamine oxidase(DAO), and ATPase in mitochondria of IECs were determined.The structural changes of mitochondria in IECs were observed under electron microscope and light microscope. Results After treatmenting with DHFZT, the levels of mitochondrial Na+- K+-ATPase and Ca2+- ATPase in treatment group were significantly increased as compared with model group[for Na+- K+- ATPase,μmol Pi/mg(protein·h), 6.35±0.49 vs.6.24±0.46 at 1 h, 7.01±0.57 vs.5.45±0.39 at 3 h, 6.57±0.58 vs.4.81±0.32 at 6 h,P< 0.05, and 5.98± 0.39 vs.4.24±0.29 at 12 h,P<0.01; for Ca2+-ATPase,μmol Pi/mg(protein·h),5.25±0.46 vs. 4.46±0.39 at 3 h,P<0.05, 4.68±0.41 vs.3.49±0.30 at 6 h, and 4.85±0.35 vs.3.26±0.28 at 12 h,P<0.01], damage of mitochondrial ultrastructure was also reduced, and serum iFABP and DAO were significantly decreased[for iFABP(μmol/L):74.67±8.57 vs.132.46±16.43 at 6 h, and 121.48± 14.35 vs.243.43±35.91 at 12 h,P< 0.01; for DAO(g/L):100.03±16.99 vs.178.43±26.38 at 3 h,P<0.05; 135.58±20.86 vs.258.32±36.31 at 6 h, and 172.55±22.53 vs.288.49±40.29 at 12 h,P<0.01]. Conclusion DHFZT could protect IECs and mitochondrial normal structures and increase the levels of serum iFABP and DAO probably by regulating the levels of mitochondrial ion pump Na+-K+ ATPase and Ca2+-ATPase. Key words: Severe acute pancreatitis; Intestinal epithelial cells; Mitochondria; Dai Huang Fu Zi Tang
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