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Abstract Title:

Curcuminoids modulates oxidative damage and mitochondrial dysfunction in diabetic rat brain.

Abstract Source:

Free Radic Res. 2008 Nov;42(11-12):999-1005. PMID: 19031318

Abstract Author(s):

Manisha Rastogi, Rudra P Ojha, G V Rajamanickam, Aruna Agrawal, Abha Aggarwal, G P Dubey

Article Affiliation:

Centre for Advanced Research in Indian System of Medicine, SASTRA University, Thanjavur, Tamilnadu, India.

Abstract:

Diabetes exacerbates neuronal injury induced by hyperglycemia mediated oxidative damage and mitochondrial dysfunction. The aim of the present study is to investigate the effects of curcuminoids, polyphenols of Curcuma longa (L.) on oxidative stress and mitochondrial impairment in the brain of streptozotocin (STZ)-induced diabetic rats. A marked increase in lipid peroxidation and nitrite levels with simultaneous decrease in endogenous antioxidant marker enzymes was observed in the diabetic rat brain, which was restored to normal levels on curcuminoids treatment. Down-regulation of mitochondrial complex I and IV activity caused by STZ induction was also up-regulated on oral administration of curcuminoids. Moreover, curcuminoids administration profoundly elevated the ATP level, which was earlier reduced in the diabetic brain. These results suggest that curcuminoids exhibit a protective effect by accelerating antioxidant defense mechanisms and attenuating mitochondrial dysfunction in the brain of diabetic rats. Curcuminoids thus may be used as a promising therapeutic agent in preventing and/or delaying the progression of diabetic complications in the brain.

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Sayer Ji
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