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Mechanisms of cerebral protection of Chinese herbal extract-Braintone on middle cerebral artery occluded rats

Kok-Poh Loh, Wan-Hui Wong, Li-Shan Low, Hong Wang, Benny Kwong-Huat Tan, Vincent Chou, Yi-Zhun Zhu*   

  1. 1. Department of Pharmacology, National University of Singapore, Singapore
    2. Hong Kong Health Care Association Ltd., Hong Kong
    3. Department of Pharmacology, School of Pharmacy and Institute of Biomedical Sciences, Fudan University, Shanghai 200032, China
  • Received:2009-04-27 Revised:2009-05-10 Online:2009-06-15 Published:2009-06-15
  • Contact: Yi-Zhun Zhu*

Abstract:

Free radical induced neuronal damage is involved in stroke. Several in vitro and in vivo studies have proved that antioxidant could act as neuroprotective agent through intervening with free-radical mediated apoptosis in the ischemic penumbra. In particular, natural products which contain antioxidant properties have undoubtedly potential for stroke treatment. In the present study, therapeutic effects of Braintone on Wistar rats undergone middle cerebral artery occlusion (MCAO) was evaluated. Gene expression levels of pro-apoptotic genes (AT2 receptor, FAS, BAX and BCL-XS) were showed to be significantly reduced in Braintone treated groups (0.4-, 0.72-, 0.76-, 0.32-fold, P<0.05) as compared to vehicle group. Significant reduction of immunoreactivity of protein production of these genes, together with least nuclear green fluorescence observed in TUNEL, Braintone as an antioxidant drug, is concluded to have promising therapeutic effect for stroke treatment.

Key words: Stroke, Stroke, MCAO, MCAO, Braintone, Braintone, Antioxidant, Antioxidant, Oxidative stress, Oxidative stress

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