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Oxidative Medicine and Cellular Longevity
Volume 2014, Article ID 792574, 8 pages
http://dx.doi.org/10.1155/2014/792574
Research Article

In Vitro Antioxidant and Cytotoxic Activities of Arnebia benthamii (Wall ex. G. Don): A Critically Endangered Medicinal Plant of Kashmir Valley

1Clinical Biochemistry, University of Kashmir, Hazratbal, Srinagar 190006, India
2Department of Biochemistry, University of Kashmir, Hazratbal, Srinagar 190006, India
3Department of Biotechnology, University of Kashmir, Srinagar, Hazratbal, Srinagar 190006, India

Received 7 December 2013; Revised 21 January 2014; Accepted 28 January 2014; Published 6 March 2014

Academic Editor: Kota V. Ramana

Copyright © 2014 Showkat Ahmad Ganie et al. 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.

Abstract

Arnebia benthamii is a major ingredient of the commercial drug available under the name Gaozaban, which has antibacterial, antifungal, anti-inflammatory, and wound-healing properties. In the present study, in vitro antioxidant and anticancer activity of different extracts of Arnebia benthamii were investigated. Antioxidant potential of plant extracts was evaluated by means of total phenolics, DPPH, reducing power, microsomal lipid peroxidation, and hydroxyl radical scavenging activity. The highest phenolic content (TPC) of 780 mg GAE/g was observed in ethyl acetate, while the lowest TPC of 462 mg GAE/g was achieved in aqueous extract. At concentration of 700 µg/mL, DPPH radical scavenging activity was found to be highest in ethyl acetate extract (87.99%) and lowest in aqueous extract (73%). The reducing power of extracts increased in a concentration dependent manner. We also observed its inhibition on Fe2+/ascorbic acid-induced lipid peroxidation (LPO) on rat liver microsomes in vitro. In addition, Arnebia benthamii extracts exhibited antioxidant effects on Calf thymus DNA damage induced by Fenton reaction. Cytotoxicity of the extracts (10–100 µg/mL) was tested on five human cancer cell lines (lung, prostate, leukemia, colon, and pancreatic cell lines) using the Sulphorhodamine B assay.