Abstract:
:A major component of green tea, a widely consumed beverage, is (-)-epigallocatechin gallate (EGCG), which has strong antioxidant properties. Our previous study has indicated that free radical production following rat traumatic brain injury (TBI) induces neural degeneration. In this study, we investigated the effects of EGCG on cerebral function and morphology following TBI. Six-week-old male Wistar rats that had access to normal drinking water, or water containing 0.1% (w/v) EGCG ad libitum, received TBI with a pneumatic controlled injury device at 10 weeks of age. Immunohistochemistry and lipid peroxidation studies revealed that at 1, 3 and 7 days post-TBI, the number of 8-hydroxy-2'-deoxyguanosine-, 4-hydroxy-2-nonenal- and single-stranded DNA (ssDNA)-positive cells, and the levels of malondialdehyde (MDA) around the damaged area after TBI, significantly decreased in the EGCG treatment group compared with the water group (P < 0.05). Most ssDNA-positive cells in the water group co-localized with neuronal cells. However, in the EGCG treatment group, few ssDNA-positive cells co-localized with neurons. In addition, there was a significant increase in the number of surviving neuronal cells and an improvement in cerebral dysfunction after TBI in the EGCG treatment group compared with the water group (P < 0.05). These results indicate that consumption of water containing EGCG pre- and post-TBI inhibits free radical-induced neuronal degeneration and apoptotic cell death around the damaged area, resulting in the improvement of cerebral function following TBI. In summary, consumption of green tea may be an effective therapy for TBI patients.
journal_name
Neuromolecular Medjournal_title
Neuromolecular medicineauthors
Itoh T,Imano M,Nishida S,Tsubaki M,Hashimoto S,Ito A,Satou Tdoi
10.1007/s12017-011-8162-xsubject
Has Abstractpub_date
2011-12-01 00:00:00pages
300-9issue
4eissn
1535-1084issn
1559-1174journal_volume
13pub_type
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