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Protective role of a melon superoxide dismutase combined with gliadin (GliSODin) on the status of lipid peroxidation and antioxidant defense against azoxymethane-induced experimental colon carcinogenesis


1 Department of Biology University El hadj Lakhder-Batna, University El Hadj Lakhder-Batna, Batna, Algeria
2 Department of Biology, University of Tebessa, University Larbi Tebessi, Tebessa, Algeria
3 Department of Animal Biology University, University of Badji Mokhtar Annaba, Laboratory of Environmental Bio Surveillance, University of Badji Mokhtar-Annaba, Annaba, Algeria

Correspondence Address:
Kheireddine Ouali,
Laboratory of Environmental Bio Surveillance, University of Badji Mokhtar-Annaba, BP 12 El Hadjar, Annaba 23000
Algeria
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jcrt.JCRT_175_19

Background: Azoxymethane (AOM) is a potent carcinogenic agent commonly used to induce colon cancer in rats and mice, with the cytotoxicity of AOM mediated by oxidative stress. Aim of Study: This study investigated the protective effect of a natural antioxidant (GliSODin) against AOM-induced oxidative stress and carcinogenesis in rat colon. Methods: Twenty male Wistar rats were randomly divided into four groups (five rats/group). The control group was fed a basal diet. AOM-treated group (AOM) was fed a basal diet and received intraperitoneal injections of AOM for 2 weeks at a dose of 15 mg/kg. The GliSODin treatment group (superoxide dismutase [SOD]) received oral supplementation of GliSODin (300 mg/kg) for 3 months, and the fourth combined group received AOM and GliSODin (AOM + SOD). All animals were continuously fed ad libitum until the age of 16 weeks when all rats were sacrificed. The colon tissues were examined microscopically for pathological changes and aberrant crypt foci (ACF) development, oxidant status (lipid peroxidation-LPO), and enzyme antioxidant system (glutathione [GSH], GSH-S-transferase, catalase, and SOD). Results: Our results showed that AOM induced ACF development and oxidative stress (GSH depletion and lipid peroxidation) in rat colonic cells. The concomitant treatment of AOM with GliSODin significantly ameliorated the cytotoxic effects of AOM. Conclusion: The results of this study provide in vivo evidence that GliSODin reduced the AOM-induced colon cancer in rats, through their potent antioxidant activities.


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    -  Baba-Ahmed F
    -  Guedri K
    -  Trea F
    -  Ouali K
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