Cao DQ, Luo L, Wang RO, Yang Z, Zhang LL, You LY, Wang Q, Song Q, Li XR, Liang Y. Protective effects of Raphanus sativus extract on intestinal mucosal peroxide damage in rats with incomplete intestinal obstruction.
Shijie Huaren Xiaohua Zazhi 2015;
23:4236-4241. [DOI:
10.11569/wcjd.v23.i26.4236]
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Abstract
AIM: To investigate the protective effects of Raphanus sativus extract (Rex) on intestinal mucosal peroxide damage in a rat model of incomplete intestinal obstruction (IIO).
METHODS: Sprague-Dawley rats were randomly divided into a normal group (group A, n = 14), a sham-operation group (group B, n = 14), an intestinal obstruction group (group C, n = 20) and an intestinal obstruction + Rex group (group D, n = 20). IIO was induced by surrounding the terminal ileum with a sterile pipe. After that, the animals in group D was given Rex (100 mg/kg body weight), while the rest groups were given equal volumes of saline. On days 5 and 7, the abdominal cavity was opened to collect 3 mL blood from the abdominal aorta for determining superoxide dismutase (SOD) and malondialdehyde (MDA) levels. Meanwhile, two segments of the small intestine were taken 4 cm above the obstructive for hematoxylin-eosin (HE) staining and for measuring diamine oxidase (DAO), respectively.
RESULTS: At each corresponding time point, compared with group B, SOD and DAO levels were significantly lower (P < 0.05 or P < 0.01) and MDA content and mucosal injury score were significantly higher (P < 0.01) in group C. Swelling, necrosis and shedding were visible in epithelial cells. Meanwhile, the submucosa, muscular and serosa had apparent congestion with infiltration of inflammatory cells. Compared with group C, treatment with Rex in group D significantly increased SOD activity (P < 0.05 or P < 0.01) and DAO content (P < 0.01), while MDA content and mucosal injury score were significantly decreased (P < 0.01). The damage of the ileum mucosa, infiltration of inflammatory cells and vascular responses in the ileum were significantly alleviated after treatment with Rex.
CONCLUSION: Rex can elevate serum SOD activity, reduce MDA content and increase tissue DAO levels in rats with IIO to protect the intestinal mucosal from being damaged by oxidative stress reaction effectively.
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