Effect of γ-tocotrienol in counteracting oxidative stress and joint damage in collagen-induced arthritis in rats

Journal Publication ResearchOnline@JCU
Radhakrishnan, Ammu;Tudawe, Dulanthi;Chakravarthi, Srikumar;Chiew, Gan Seng;Nagaraja, Haleagrahara
Abstract

Tocotrienols exhibit a significant anti-inflammatory and antioxidant effect in numerous human diseases. However, the anti-inflammatory and antioxidant effects of tocotrienols in arthritic conditions are not well documented. Therefore, the effect of γ-tocotrienol supplementation against oxidative stress and joint pathology in collagen-induced arthritis in rats was investigated in the present study. Adult female Dark Agouti rats were randomly divided into groups: Control, γ-tocotrienol alone, arthritis alone and arthritis with γ-tocotrienol. Arthritis was induced using 4 mg/kg body weight collagen in complete Freund's adjuvant. The rats were treated orally with 5 mg/kg body weight of γ-tocotrienol between day 21 and day 45. After 45 days, serum C-reactive protein (CRP), tumor necrosis factor (TNF)-α, superoxide dismutase (SOD) and total glutathione (GSH) assays were conducted. γ-tocotrienol significantly reduced the arthritis-induced changes in body weight, CRP, TNF-α, SOD and the total GSH levels. There was a significant reduction in the arthritis-induced histopathological changes in the γ-tocotrienol treatment group. The data indicated that administration of γ-tocotrienol resulted in a significant antioxidant and anti-inflammatory effect on collagen-induced arthritis; therefore, γ-tocotrienol may have therapeutic potential as a long-term anti-arthritic agent in rheumatoid arthritis therapy.

Journal

EXPERIMENTAL AND THERAPEUTIC MEDICINE

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Volume

7

ISBN/ISSN

1792-1015

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Issue

5

Pages Count

7

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Publisher

Spandidos Pubilcations

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DOI

10.3892/etm.2014.1592