Statin Pretreatment in Experimental Acute Pancreatitis

Context Some authors have found beneficial effect of statins in certain inflammatory conditions, but the effect of statins on acute pancreatitis is not yet defined. Objective The aim of this study was to evaluate the effect of simvastatin on an experimental model of mild and severe acute pancreatitis. Animals One hundred and one Wistar rats with cerulein or taurocholate-induced acute pancreatitis were used in this study. Design The rats were divided into two groups: Group I (n=51) received two previously i.p. injections (18±2 and 3±1 hours) of simvastatin (200 μg/kg) and Group II (n=50) received two previously i.p. injections of saline. Both groups were subdivided into two subgroups: mild pancreatitis (cerulein-induced; IA, n=10; IIA, n=10) and severe pancreatitis (taurocholateinduced; IB, n=41; IIB, n=40). Main outcome measures The parameters evaluated were: pancreatic vascular permeability, tissue water content, histologic lesion, amylase serum levels in rats with mild pancreatitis (subgroups A); mortality rate, serum levels of IL-6, IL-10, amylase, pulmonary myeloperoxidase activity and ascitic levels of TNF-alpha in rats with severe pancreatitis (subgroups B). Results Serum levels of IL-10 were significantly lower in the simvastatin-treated group as well as the myeloperoxidase activity. There was no significant difference in any of other studied parameters. Conclusion Simvastatin appears to reduce inflammatory cytokines and pulmonary neutrophilic activation in the severe acute pancreatitis model, but there is no significant effect on survival curve, in spite of a clear trend towards a better survival in the simvastatin group.


José Luiz Almeida, Sandra Nassa Sampietre, Ana Maria Mendonça Coelho, Nilza Aparecida Trindade Molan, Marcel Cerqueira César Machado, José Eduardo Monteiro da Cunha, José Jukemura

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