Pu-Erh tea and GABA attenuates oxidative stress in kainic acid-induced status epilepticus

Journal of Biomedical Science

Chien-Wei Hou¹ 

[1] Department of Biotechnology, Yuanpei University, Hsinchu, Taiwan

关键词: COX-2;    ROS;    MAPKs;    Epilepticus;    GABA;   

Others  :  829165
DOI  :  10.1186/1423-0127-18-75

 received in 2011-09-01, accepted in 2011-10-20,  发布年份 2011

【 摘 要 】

Background

Pu-Erh tea is one of the most-consumed beverages due to its taste and the anti-anxiety-producing effect of the gamma-aminobutyric acid (GABA) if contains. However the protective effects of Pu-Erh tea and its constituent, GABA to kainic acid (KA)-induced seizure have not been fully investigated.

Methods

We analyzed the effect of Pu-Erh tea leaf (PETL) and GABA on KA-induced neuronal injury in vivo and in vitro.

Results

PETL and GABA reduced the maximal seizure classes, predominant behavioral seizure patterns, and lipid peroxidation in male FVB mice with status epilepticus. PETL extracts and GABA were effective in protecting KA-treated PC12 cells in a dose-dependent manner and they decreased Ca²⁺ release, ROS production and lipid peroxidation from KA-stressed PC12 cells. Western blot results revealed that mitogen-activated protein kinases (MAPKs), RhoA and cyclo-oxygenase-2 (COX-2) expression were increased in PC12 cells under KA stress, and PETL and GABA significantly reduced COX-2 and p38 MAPK expression, but not that of RhoA. Furthermore, PETL and GABA reduced PGE₂ production from KA-induced PC12 cells.

Conclusions

Taken together, PETL and GABA have neuroprotective effects against excitotoxins that may have clinical applications in epilepsy.

【 授权许可】

   
2011 Hou; licensee BioMed Central Ltd.

【 图 表 】

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