MPO and alkaline phosphatase measurement: In the AP group, MPO intestinal expression was positively correlated with IL-6 (rho = 0.686, p < 0.001) and TNFα (rho = 0.682, p < 0.001) pancreatic expression, as well as TNFα expression (rho = 0.684, p < 0.001) and CD45 (rho = 0.508, p < 0.001) and HMGB1 intestinal expression (rho = 0.540, p < 0.001).