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Molecules 2012, 17(5), 6033-6045; doi:10.3390/molecules17056033
Article

Protective Effect of T. violacea Rhizome Extract Against Hypercholesterolemia-Induced Oxidative Stress in Wistar Rats

1
, 1
 and 2,*
Received: 29 March 2012; in revised form: 27 April 2012 / Accepted: 28 April 2012 / Published: 21 May 2012
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Abstract: The present study examines the effect of methanolic extract of T. violacea rhizomes on high cholesterol (2%) diet fed rats (HCD). At the end of 4 weeks, serum total protein, albumin, reduced glutathione (GSH), and markers of oxidative stress viz., catalase (CAT), superoxide dismutase (SOD), thiobarbituric acid reactive substances (TBARS—a marker of lipid peroxidation), glutathione-S-transferase (GST) and glutathione peroxidase (GPx) in the serum, aorta, liver and heart of HCD and normal rats were assessed and compared. A significant (p < 0.05) elevation in TBARS, and a reduction (p < 0.05) in serum total protein, albumin, GSH and antioxidant enzyme activities was observed in tissues of HCD fed rats compared with the normal group. Co-administration of crude extracts of T. violacea rhizomes protected the liver, heart, serum and aorta against HCD-induced lipid peroxidation in a dose dependant manner. The activities of the extract (500 mg/kg) compared favorably with gemfibrozil. The extracts also protected against HCD-induced reduction in serum total protein, GSH and restored the activities of antioxidant tissues (liver, heart and aorta) enzymes to near normal values. This result suggested that consumption of T. violacea rhizome may help to protect against hypercholesterolemia- induced oxidative stress diseases in the heart and liver.
Keywords: T. violacea; rhizomes; hypercholesterolemia; antioxidant enzymes lipid peroxidation T. violacea; rhizomes; hypercholesterolemia; antioxidant enzymes lipid peroxidation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Olorunnisola, O.S.; Bradley, G.; Afolayan, A.J. Protective Effect of T. violacea Rhizome Extract Against Hypercholesterolemia-Induced Oxidative Stress in Wistar Rats. Molecules 2012, 17, 6033-6045.

AMA Style

Olorunnisola OS, Bradley G, Afolayan AJ. Protective Effect of T. violacea Rhizome Extract Against Hypercholesterolemia-Induced Oxidative Stress in Wistar Rats. Molecules. 2012; 17(5):6033-6045.

Chicago/Turabian Style

Olorunnisola, Olorunnisola Sinbad; Bradley, Graeme; Afolayan, Anthony Jide. 2012. "Protective Effect of T. violacea Rhizome Extract Against Hypercholesterolemia-Induced Oxidative Stress in Wistar Rats." Molecules 17, no. 5: 6033-6045.


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