Document Detail


Fresh green tea and gallic acid ameliorates oxidative stress in kainic acid-induced status epilepticus.
MedLine Citation:
PMID:  22324774     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Green tea is one of the most-consumed beverages due to its taste and antioxidative polyphenols. However the protective effects of green tea and its constituent, gallic acid (GA) against kainic acid (KA)-induced seizure have not been studied. We investigated the effect of fresh green tea leaf (GTL) and GA on KA-induced neuronal injury in vivo and in vitro. The results showed that GTL and GA reduced the maximal seizure classes, predominant behavioral seizure patterns, and lipid peroxidation in male FVB mice with status epilepticus (SE). GTL extract and GA provided effective protection against KA-stressed PC12 cells in a dose-dependent manner. In the protective mechanism study, GTL and GA decreased Ca2+ release, ROS and lipid peroxidation from KA-stressed PC12 cells. Western blot results revealed that mitogen-activated protein kinases (MAPKs), RhoA and COX-2 expression was increased in PC12 cells under KA stress, and expression of COX-2 and p38 MAPK, but not RhoA, was significantly reduced by GTL and GA. Furthermore, GTL and GA were able to reduce PGE2 production from KA-stressed PC12 cells. Taken together, the results showed that GTL and GA provided neuroprotective effects against excitotoxins and may have a clinical application in epilepsy.
Authors:
Chien-Wei Rolis Hou; Hsiao-Ling Huang; Chih-Cheng Lin; Kee Ching George Jeng; Pei-Wun Yao; Lu-Te Chuang; Su-Ling Kuo
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-2-11
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  -     ISSN:  1520-5118     ISO Abbreviation:  -     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-2-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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