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http://dx.doi.org/10.14405/kjvr.2011.51.3.177

Protective effect of the methanol extract of Polyopes lancifolia (Harvey) kawaguchi et wang against ionizing radiation-induced mouse gastrointestinal injury  

Jeong, Jinwoo (Department of Veterinary Anatomy, College of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University)
Yang, Wonjun (Department of Veterinary Anatomy, College of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University)
Ahn, Meejung (Applied Radiological Science Research Institute, Jeju National University)
Kim, Ki Cheon (Applied Radiological Science Research Institute, Jeju National University)
Hyun, Jin Won (Applied Radiological Science Research Institute, Jeju National University)
Kim, Sung-Ho (Department of Veterinary Anatomy, College of Veterinary Medicine, Chonnam National University)
Moon, Changjong (Department of Veterinary Anatomy, College of Veterinary Medicine, Chonnam National University)
Shin, Taekyun (Department of Veterinary Anatomy, College of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University)
Publication Information
Korean Journal of Veterinary Research / v.51, no.3, 2011 , pp. 177-183 More about this Journal
Abstract
The radioprotective efficacy of a methanol extract of the red algae Polyopes lancifolia (Harvey) kawaguchi et wang (mPL) was evaluated in mice subjected to total-body gamma irradiation. mPL protection against radiation-induced oxidative stress was examined by histological evaluation of intestinal crypt-cell survival and liver activities of the antioxidant enzymes superoxide dismutase (SOD) and catalase (CAT). mPL (100 mg/kg body weight) administered intraperitoneally at 24 h and 1 h prior to irradiation protected jejunal crypt cells from radiation-induced apoptosis (p < 0.01). The pretreatment of mPL attenuated a radiation-induced decrease in villous height (p < 0.05), and improved jejunal crypt survival (p < 0.05). The dose reduction factor was 1.14 at 3.5 days after irradiation. Treatment with mPL prior to irradiation resulted in significantly higher (p < 0.01) levels of SOD and CAT activities, compared to those levels of irradiated control mice with vehicle treatment. These results suggest that mPL is a useful radioprotective agent capable of defending intestinal progenitor cells against total-body irradiation, at least in part through mPL antioxidative activity.
Keywords
antioxidation; intestinal progenitor cells; irradiation; Polyopes lancifolia (Harvey) kawaguchi et wang; red seaweed;
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