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Docosahexaenoic Acid Inhibits Cerulein-Induced Acute Pancreatitis in Rats

Department of Food and Nutrition, Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University, Seoul 03722, Korea
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Nutrients 2017, 9(7), 744; https://doi.org/10.3390/nu9070744
Received: 1 June 2017 / Revised: 5 July 2017 / Accepted: 6 July 2017 / Published: 12 July 2017
(This article belongs to the Special Issue Selected Papers from APNNO Biennial Conference 2016)
Oxidative stress is an important regulator in the pathogenesis of acute pancreatitis (AP). Reactive oxygen species induce activation of inflammatory cascades, inflammatory cell recruitment, and tissue damage. NF-κB regulates inflammatory cytokine gene expression, which induces an acute, edematous form of pancreatitis. Protein kinase C δ (PKCδ) activates NF-κB as shown in a mouse model of cerulein-induced AP. Docosahexaenoic acid (DHA), an ω-3 fatty acid, exerts anti-inflammatory and antioxidant effects in various cells and tissues. This study investigated whether DHA inhibits cerulein-induced AP in rats by assessing pancreatic edema, myeloperoxidase activity, levels of lipid peroxide and IL-6, activation of NF-κB and PKCδ, and by histologic observation. AP was induced by intraperitoneal injection (i.p.) of cerulein (50 μg/kg) every hour for 7 h. DHA (13 mg/kg) was administered i.p. for three days before AP induction. Pretreatment with DHA reduced cerulein-induced activation of NF-κB, PKCδ, and IL-6 in pancreatic tissues of rats. DHA suppressed pancreatic edema and decreased the abundance of lipid peroxide, myeloperoxidase activity, and inflammatory cell infiltration into the pancreatic tissues of cerulein-stimulated rats. Therefore, DHA may help prevent the development of pancreatitis by suppressing the activation of NF-κB and PKCδ, expression of IL-6, and oxidative damage to the pancreas. View Full-Text
Keywords: acute pancreatitis; docosahexaenoic acid; interleukin-6; protein kinase C δ; NF-κB acute pancreatitis; docosahexaenoic acid; interleukin-6; protein kinase C δ; NF-κB
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Jeong, Y.K.; Lee, S.; Lim, J.W.; Kim, H. Docosahexaenoic Acid Inhibits Cerulein-Induced Acute Pancreatitis in Rats. Nutrients 2017, 9, 744.

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