Antioxidant and anti-inflammatory effects of selenium in oral buccal mucosa and small intestinal mucosa during intestinal ischemia-reperfusion injury

• Published in: Journal of inflammation (London, England) Vol. 11; no. 1; p. 36
• Main Authors: Kim, Yongsoo, Kim, Dong Chil, Cho, Eui-Sic, Ko, Seung-O, Kwon, Woon Yong, Suh, Gil Joon, Shin, Hyo-Keun
• Format: Journal Article
• Language: English
• Published: England BioMed Central Ltd 30.10.2014; BioMed Central
• Subjects: Analysis; Antioxidants; Complications and side effects; Dosage and administration; Drug dosages; Drug therapy; Enzymes; Experiments; Heart attacks; Ischemia; Lipid peroxidation; Lipids; Medical research; Multiple organ dysfunction syndrome; Phosphorylation; Physiological aspects; Reperfusion injury; Rodents; Selenium; Small intestine; Studies; Buccal mucosa; Lipid peroxidation; NF kappaB; Selenium; Ischemia reperfusion injury; Small intestine
• ISSN: 1476-9255; 1476-9255
• DOI: 10.1186/s12950-014-0036-1

The aim of this study were to investigate whether selenium treatment attenuates lipid peroxidation and downregulates the NF-κB pathway in small intestinal mucosa and to examine whether the effect of selenium is also observed in oral buccal mucosa, during small intestinal IR injury. Eighteen rats were assigned into three groups: sham, IR, and IR + selenium. Saline or selenium was administered through a tail vein. 24 hours later, the superior mesenteric artery was exposed and clamped in the IR and IR + selenium groups. After ischemic and reperfusion period, animals were sacrificed and oral buccal mucosa and small intestinal mucosa were harvested. Glutathione peroxidase activity and cytoplasmic IκB-α expression was higher in the IR + selenium group than that in the IR group. A malondialdehyde level, cytoplasmic phosphorylated inhibitor κB-α, nuclear NF-κB p65 expressions, and NF-κB p65 DNA-binding activity were lower in the IR + selenium group than those in the IR group. A selenium treatment may cause increased GPx activity, attenuated lipid peroxidation, and downregulated the NF-κB pathway during small intestinal IR injury. Furthermore, these therapeutic benefits of selenium can be observed in oral buccal mucosa as well as small intestinal mucosa.