Int J Biol Sci 2015; 11(3):295-303. doi:10.7150/ijbs.10586 This issue
1. Department of Otolaryngology, Charles Drew University of Medicine and Science, 1731 E. 120th Street, Los Angeles, CA 90059, USA.
2. Department of Zoology, Faculty of Science, University of Mansoura, Mansoura 35516, Egypt.
3. Drug and Radiation Research Department, National Center for Radiation and Research Technology, P.O. Box 29 Nasr City, Cairo, Egypt.
4. Department of Internal Medicine, Charles Drew University of Medicine and Science, 1731 E. 120th Street, Los Angeles, CA 90059, USA.
5. Department of Pathology, Charles Drew University of Medicine and Science, 1731 E. 120th Street, Los Angeles, CA 90059, USA.
In the current study, we examined the protective effect of hydroferrate fluid MRN-100 against the carcinogen methylnitronitrosoguanidine (MNNG)-induced gastric and esophageal cancer in rats. MRN-100 is an iron-based compound composed of bivalent and trivalent ferrates. At 33 weeks post treatment with MNNG, rats were killed and examined for the histopathology of esophagus and stomach; liver, spleen, and total body weight; and antioxidant levels in the blood and stomach tissues. Results showed that 17/20 (85%) gastroesophageal tissues from carcinogen MNNG-treated rats developed dysplasia and cancer, as compared to 8/20 (40%) rats treated with MNNG plus MRN-100. In addition, MRN-100 exerted an antioxidant effect in both the blood and stomach tissues by increasing levels of GSH, antioxidant enzymes SOD, CAT, and GPx, and total antioxidant capacity (TAC) level. This was accompanied by a reduction in the total free-radical and malondialdehyde levels. Furthermore, MRN-100 protected against body and organ weight loss. Thus, MRN-100 exhibited significant cancer chemopreventive activity by protecting tissues against oxidative damage in rats, which may suggest its effectiveness as an adjuvant for the treatment of gastric/esophageal carcinoma.
Keywords: hydroferrate, gastric cancer, dysplasia, anti-oxidant