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Abstract Title:

In vitro antioxidant, antimutagenic and genoprotective activity of Rosa roxburghii fruit extract.

Abstract Source:

Phytother Res. 2008 Mar ;22(3):376-83. PMID: 18167049

Abstract Author(s):

Francois H van der Westhuizen, Catharina S Janse van Rensburg, George S Rautenbach, Jeanine L Marnewick, Du Toit Loots, Cristal Huysamen, Roan Louw, Pieter J Pretorius, Elardus Erasmus

Article Affiliation:

Francois H van der Westhuizen

Abstract:

The antioxidant properties of the fruit of the Rosa roxburghii (RR) plant have been associated with several putative health promoting effects. The possible cytotoxic, mutagenic/antimutagenic and genotoxic effects of RR fruit extract were investigated. The effect on antioxidant status and protection against induced oxidative stress were also investigated using primary rat hepatocytes. A RR fruit extract containing 45 g/L total ascorbic acid and 65 g/L total polyphenols was used in this study. Dilutions up to 0.08% (v/v) increased significantly the antioxidant status in primary rat hepatocytes. The glutathione redox state was decreased with RR treatment but was increased in Chang liver cells and MT-2 lymphoblast. No cyto- or genotoxicity were observed at levels of up to 5% (v/v) of the fruit extract. In addition, a significant protection against t-BHP induced oxidative stress was observed in primary rat hepatocytes. The Ames test revealed no mutagenic activity using the Salmonella typhimurium strains TA98, TA100 and TA102. A significant antimutagenic effect of the extract was observed against the metabolic activated mutagens 2-acetylaminofluorene and aflatoxin B1 and to a lesser extent against methyl methanesulfonate. It is concluded that these results support the associated health promoting potential of Rosa Roxburghii fruit and in particular against oxidative stress.

Study Type : In Vitro Study

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