In vitro neuroprotective potential of four medicinal plants against rotenone-induced toxicity in SH-SY5Y neuroblastoma cells

BMC Complementary and Alternative Medicine

Research Article

Keabetswe Seoposengwe¹  Jacob John van Tonder¹  Vanessa Steenkamp¹ 

[1] Department of Pharmacology, Faculty of Health Sciences, University of Pretoria, Private Bag X323, Arcadia, Pretoria, South Africa;

关键词: Caspase-3;    Crinum bulbispermum;    Glutathione;    Lannea schweinfurthii;    Mitochondrial membrane potential;    Neuroprotection;    Reactive oxygen species (ROS);    Rotenone;    Scadoxus puniceus;    Zanthoxylum capense;   

DOI  :  10.1186/1472-6882-13-353

 received in 2013-10-09, accepted in 2013-12-05,  发布年份 2013

来源: Springer

【 摘 要 】

BackgroundLannea schweinfurthii, Zanthoxylum capense, Scadoxus puniceus and Crinum bulbispermum are used traditionally to treat neurological disorders. The aim of this study was to evaluate the cytoprotective potential of the four plants, after induction of toxicity using rotenone, in SH-SY5Y neuroblastoma cells.MethodsCytotoxicity of the plant extracts and rotenone was assessed using the sulforhodamine B (SRB) assay. Fluorometry was used to measure intracellular redox state (reactive oxygen species (ROS) and intracellular glutathione content), mitochondrial membrane potential (MMP) and caspase-3 activity, as a marker of apoptotic cell death.ResultsOf the tested plants, the methanol extract of Z. capense was the least cytotoxic; LC50 121.3 ± 6.97 μg/ml, while S. puniceus methanol extract was the most cytotoxic; LC50 20.75 ± 1.47 μg/ml. Rotenone reduced intracellular ROS levels after 24 h exposure. Pre-treating cells with S. puniceus and C. bulbispermum extracts reversed the effects of rotenone on intracellular ROS levels. Rotenone exposure also decreased intracellular glutathione levels, which was counteracted by pre-treatment with any one of the extracts. MMP was reduced by rotenone, which was neutralized by pre-treatment with C. bulbispermum ethyl acetate extract. All extracts inhibited rotenone-induced activation of caspase-3.ConclusionThe studied plants demonstrated anti-apoptotic activity and restored intracellular glutathione content following rotenone treatment, suggesting that they may possess neuroprotective properties.

【 授权许可】

Unknown   
© Seoposengwe et al.; licensee BioMed Central Ltd. 2013. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.