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eCAM Advance Access published online on December 1, 2006
eCAM, doi:10.1093/ecam/nel087
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© 2006 The Author(s).
Received December 4, 2005
Accepted October 12, 2006

Original Article

Hibiscus sabdariffa Affects Ammonium Chloride-Induced Hyperammonemic Rats

M. Mohamed Essa 1 and P. Subramanian 1 *

1 Department of Biochemistry, Faculty of Science, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India

* To whom correspondence should be addressed.
P. Subramanian, E-mail: annamalai_rhythm{at}yahoo.co.in


  Abstract

Hibiscus sabdariffa (HS) is an edible medicinal plant, indigenous to India, China and Thailand and is used in Ayurveda and traditional medicine. Alcoholic extract of HS leaves (HSEt) was studied for its anti-hyperammonemic and antioxidant effects in brain tissues of ammonium chloride-induced hyperammonemic rats. Oral administration of HSEt (250 mg kg-1 body weight) significantly normalizes the levels of ammonia, urea, uric acid, creatinine and non-protein nitrogen in the blood. HSEt significantly reduced brain levels of lipid peroxidation products such as thiobarbituric acid and reactive substances (TBARS) and hydroperoxides (HP). However, the administered extract significantly increased the levels of antioxidants such as catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx) and reduced glutathione (GSH) in brain tissues of hyperammonemic rats. This investigation demonstrates significant anti-hyperammonemic and antioxidant activity of HS.

Keywords: ammonia; antioxidants; creatinine; Hibiscus sabdariffa; hyperammonemia; lipid peroxidation; urea; uric acid.
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