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  • Title: Anti-inflammatory and Antioxidant Effects of Captopril Compared to Methylprednisolone in L-Arginine-Induced Acute Pancreatitis.
    Author: El-Ashmawy NE, Khedr NF, El-Bahrawy HA, Hamada OB.
    Journal: Dig Dis Sci; 2018 Jun; 63(6):1497-1505. PubMed ID: 29594979.
    Abstract:
    BACKGROUND: Acute pancreatitis (AP) is an inflammatory disease mediated by damage in acinar cells and pancreatic inflammation with infiltration of leukocytes. The pancreatic renin-angiotensin system may play an important role in the pathogenesis of AP. AIM: The present study aimed to investigate the possible protective role of captopril (CAP), an angiotensin-converting enzyme inhibitor, in attenuating L-arginine-induced AP rat model and to elucidate the underlying molecular mechanisms. METHODS: Forty-eight adult male Wister rats were divided into four equal groups: control group (vehicle, orally for 10 days), AP group (3 g/kg L-arginine, single i.p.) on 10th day of the experiment, CAP group (50 mg/kg captopril, orally, once daily), and MP group (30 mg/kg methylprednisolone, orally, once daily). CAP and MP were administered for 10 days prior to L-arginine injection. Rats were sacrificed 24 h after arginine injection. Inflammatory biomarkers; tumor necrosis factor alpha (TNF-α) concentration, myeloperoxidase (MPO) activity, and inducible nitric oxide synthase (iNOS) gene expression were determined in pancreas. Oxidative stress biomarkers; pancreatic nitric oxide (NO) and reduced glutathione (GSH) concentrations were measured. Moreover, serum α-amylase and lipase activities were measured and histopathological studies of the pancreas were done. RESULTS: CAP group showed a significant reduction in pancreatic TNF-α concentration, MPO activity, NO concentration, and downregulation of iNOS gene expression compared to AP group. CAP group also showed a significant increase in GSH concentration with amelioration of histological changes of AP as well as MP group. CONCLUSION: Captopril treatment showed a protective and comparable effect with MP treatment in AP rat model.
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