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Effect of copaiba oil on acute pancreatitis in mice

Daniel L. Medeiros, Thiago E. V. Lemos, Luiz H. F. Junior, Tarciso B. S. Montenegro, Paula R. S. Camara.


Objective: The anti-inflammatory activity of copaiba oil was evaluated using a cerulein-induced acute pancreatitis model in mice.
Methods: Mice were pretreated with Copaiba sp oleoresin before induction of pancreatitis. Pancreatitis was induced by intraperitoneal injection (five injections at hourly intervals) of cerulein solution and, 6 h later, pancreatic and lung damage were analyzed macroscopically for the severity of necrosis, and by protein plasma extravasation and plasma amylase activity (a biomarker of acute pancreatic damage); myeloperoxidase activity (MPO; a neutrophil marker) and thiobarbituric reactive species (TBARS; a lipid peroxidation index) were determined in the pancreas and lung.
Results: A significant reduction in protein plasma extravasation of damaged pancreatic tissue was observed in mice that received copaiba oil. This effect was confirmed biochemically by reduction of protein plasma extravasation, and associated with reduced plasma amylase and MPO activity.
Conclusion: These findings indicate the anti-inflammatory effect of copaiba oil on experimental acute pancreatitis induced by cerulein in mice.

Key words: Acute pancreatitis; Copaiba oil; Lipid peroxidation; Lung; Neutrophil; Pancreas

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