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Research in Pharmaceutical Sciences، جلد ۱۴، شماره ۶، صفحات ۵۳۴-۵۴۳
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عنوان انگلیسی Possible antioxidant mechanism of coenzyme Q10 in diabetes: impact on Sirt1/Nrf2 signaling pathways
چکیده انگلیسی مقاله Oxidative stress is a major complication in diabetes mellitus. The aim of this study was to investigate potential antioxidant activity of coenzyme Q10 (Co Q10) against hyperglycemia-induced oxidative stress in diabetic rat and unraveling its mechanism of action by focusing on silent information regulator 1 (Sirt1) and nuclear factor E2-related factor 2 (Nrf2) mRNA expression level. Furthermore, the activity of two Nrf2-dependent antioxidant enzymes (superoxide dismutase and catalase) in the liver of diabetic rats was studied. After induction of diabetes in rats using streptozotocin (55 mg/kg), rats were divided into five groups of six each. Groups 1 and 2 (healthy control groups) were injected with isotonic saline or sesame oil; group 3 received Co Q10 (10 mg /Kg /day), group 4, as a diabetic control, received sesame oil;and group 5 was diabetic rats treated with Co Q10. Afterwards, serum and liver samples were collected,and oxidative stress markers, lipid profile, as well as the expression of Sirt1 and Nrf2 genes were measured. Diabetes induction significantly reduced expression level of Sirt1 and Nrf2 mRNAs and also declined catalase, superoxide dismutase activities, and total thiol groups levels in diabetic group in comparison to healthy controls, while a significant increase was found in the levels of malondialdehyde and lipid profile. Co Q10 treatment significantly up-regulated Sirt1 and Nrf2 mRNA levels along with an increase in catalase activity in diabetic group as compared with untreated diabetic rats. Furthermore, Co Q10 caused a marked decrease in malondialdehyde levels and significantly improved lipid profile. Our data demonstrated that Co Q10 may exert its antioxidant activity in diabetes through the induction of Sirt1/Nrf2 gene expression.
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نویسندگان مقاله | Fatemeh Samimi
2Department of Anatomy, School of Medicine, Arak University of Medical Sciences, Arak, I.R. Iran.


| Maryam Baazm
3Endocrinology and Metabolism Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, I.R. Iran.


| Ebrahim Eftekhar
4Department of Clinical Biochemistry, School of Medicine, Shahid Beheshti University of Medical Sciences,Tehran, I.R. Iran.


| Sadegh Rajabi
5Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, I.R. Iran.


| Mohammad Taghi Goodarzi
1Department of Biochemistry and Genetics, School of Medicine, Arak University of Medical Sciences, Arak, I.R. Iran. 6Research Center and Molecular Medicine, Arak University of Medical Sciences, Arak, I.R. Iran.


| Farideh Jalali Mashayekhi


نشانی اینترنتی http://rps.mui.ac.ir/index.php/jrps/article/view/1948
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/115/article-115-2233604.pdf
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Article
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