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Oxidative Medicine and Cellular Longevity
Volume 2013, Article ID 743938, 7 pages
http://dx.doi.org/10.1155/2013/743938
Research Article

Neuroprotective Effect of Tea Polyphenols on Oxyhemoglobin Induced Subarachnoid Hemorrhage in Mice

1Department of Food Science, Henan Institute of Science and Technology, Xinxiang, Henan 453003, China
2School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, Henan 453003, China
3Department of Neurosurgery, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, China

Received 4 May 2013; Accepted 15 May 2013

Academic Editor: Renata Santos

Copyright © 2013 Haizhen Mo 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

Tea polyphenols are of great benefit to the treatment of several neurodegenerative diseases. In order to explore the neuroprotective effects of tea polyphenols and their potential mechanisms, an established in vivo subarachnoid hemorrhage (SAH) model was used and alterations of mitochondrial function, ATP content, and cytochrome c (cyt c) in cerebral cortex were detected. This study showed that the alteration of mitochondrial membrane potential was an early event in SAH progression. The trend of ATP production was similar to that of mitochondrial membrane potential, indicating that the lower the mitochondrial membrane potential, lesser the ATP produced. Due to mitochondrial dysfunction, more cyt c was released in the SAH group. Interestingly, the preadministration of tea polyphenols significantly rescued the mitochondrial membrane potential to basal level, as well as the ATP content and the cyt c level in the brain cortex 12 h after SAH. After pretreatment with tea polyphenols, the neurological outcome was also improved. The results provide strong evidence that tea polyphenols enhance neuroprotective effects by inhibiting polarization of mitochondrial membrane potential, increasing ATP content, and blocking cyt c release.