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Antioxidant activity of capsaicin on radiation-induced oxidation of murine hepatic mitochondrial membrane preparation

Authors Gangabhagirathi R, Joshi R

Received 9 March 2015

Accepted for publication 17 April 2015

Published 26 June 2015 Volume 2015:5 Pages 163—171

DOI https://doi.org/10.2147/RRBC.S84270

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 4

Editor who approved publication: Professor Nikolay Dokholyan

Ramachandran Gangabhagirathi,1 Ravi Joshi,2

1Bioorganic Division, 2Radiation and Photochemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai, India

Abstract: Capsaicin is the major capsaicinoid in chili peppers and is widely used as a spice. It is also used for topical applications in cases of peripheral neuropathy. The present study deals with its role in modulation of gamma radiation-induced damages of the biochemical constituents of rat liver mitochondrial membrane (RLM) preparation. The extent of lipid hydroperoxide formation, depletion in protein thiols, and formation of protein carbonyls have been biochemically assessed in the presence of varying concentrations of capsaicin in RLM. Decrease in the activities of the important antioxidant enzyme superoxide dismutase, which is involved in the scavenging of free radicals, and the mitochondrial marker enzyme succinate dehydrogenase have been also looked into. Capsaicin has been found to efficiently inhibit radiation-induced biochemical alterations, namely lipid peroxidation and protein oxidation. It also significantly prevented radiation-induced loss in the activity of antioxidant enzyme and the important endogenous antioxidant glutathione. The study suggests that capsaicin can act as an antioxidant and radioprotector in physiological systems.

Keywords: capsaicin, gamma radiation, radioprotection, lipid peroxidation, protein oxidation, enzyme activity

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