RESUMO
Acute lung injury (ALI) that develops as a result of AP can progress to acute respiratory distress syndrome. Some hypotheses are proposed to explain the pathophysiology of AP and its related pulmonary hazards. This experiment aimed to evaluate the mitigating action of rivastigmine (Riva) in lung injury that occurs on the top of acute pancreatitis (AP) induced in rats. Thirty-two male Wister rats were randomized to one of four groups: control, Riva-treated, acute pancreatitis (AP), and acute pancreatitis treated by Riva. Serum amylase and lipase levels were assessed. Pulmonary oxidative stress and inflammatory indicators were estimated. A pancreatic and pulmonary histopathological examination, as well as an immunohistochemical study of HSP70, was carried out. Riva significantly attenuated the L-arginine-related lung injury that was characterized by increased pulmonary inflammatory biomarkers (interleukin-6 [IL-6]), nuclear factor kappa B (NF-κB), tumor necrosis factor-α (TNF-α), increased pulmonary oxidative markers (total nitrite/nitrate [NOx]), MDA, decreased total antioxidant capacity (TAC), and reduced glutathione level (GSH)) with increased caspase-3 expression. Therefore, Riva retains potent ameliorative effects against lung injury that occur on the top of AP by relieving oxidative stress, inflammation, and apoptosis via HSP70/IL6/NF-κB signaling.
