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Effect of curcumin on gene expression and protein level of methionine sulfoxide reductase A (MSRA), SOD, CAT and GPx in Freund’s adjuvant inflammation-induced male rats

Authors Meshkibaf MH, Maleknia M, Noroozi S

Received 17 April 2019

Accepted for publication 11 July 2019

Published 3 September 2019 Volume 2019:12 Pages 241—249

DOI https://doi.org/10.2147/JIR.S212577

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Colin Mak

Peer reviewer comments 2

Editor who approved publication: Dr Ning Quan


MH Meshkibaf, M Maleknia, S Noroozi

Department of Clinical Biochemistry, Fasa University of Medical Sciences, Fasa, Iran

Correspondence: M Maleknia
Department of Clinical Biochemistry, Fasa University of Medical Sciences, Fasa, Iran
Tel +98 933 437 7956
Email maleknia.m2014@gmail.com

Objective: Curcumin is the well-known compound which is extracted from turmeric powder, the dried rhizome of the Curcuma longa Linn. This have been used for the treatment of various disorders including inflammation. In this study we have analyzed the effect of curcumin on arthritis induced by adjuvant in rats, considering changes in methionine sulfoxide reductase A (MSRA) expression and antioxidant enzymes levels.
Methods: Five groups of adult male Wistar rats (n=10), were randomly selected as control, placebo, experimental 1, 2 and 3. The induction of arthritis was carried out by injection of 0.1 ml adjuvant in plantar region. The first experimental group received no curcumin treatment, whereas the experimental two and three received curcumin (1 and 2 g/kg daily) respectively, for fourteen days. MSRA gene expression was assessed by real-time PCR and protein levels of MSRA, SOD, CAT and GPx were analyzed via ELISA method.
Results: The results showed no significant weight changes among the groups during the experimental period and the paw swelling caused by adjuvant was recovered within fourteen days of treatment with curcumin. However, the levels of enzymes such as superoxide dismutase, catalase and glutathione peroxidase were increased by a dose dependent manner. These results also illustrated that the gene expression and protein level of MSRA in groups treated with curcumin increased significantly (p≤0.05).
Conclusion: We concluded that the curcumin can be used against inflammation. The increasing level of MSRA can be due to the antioxidant effect of curcumin. The enzymatic level changes (MSRA, SOD, CAT and GPx) may interfere with the aging process and delay it.

Keywords: curcumin, anti-inflammation, MSRA

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