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Abstract Title:

Dietary supplementation of a high-temperature-processed green tea extract attenuates cognitive impairment in PS2 and Tg2576 mice.

Abstract Source:

Biosci Biotechnol Biochem. 2019 Aug 29:1-8. Epub 2019 Aug 29. PMID: 31462168

Abstract Author(s):

Juewon Kim, Shinichiro Funayama, Naotaka Izuo, Takahiko Shimizu

Article Affiliation:

Juewon Kim

Abstract:

Green tea intake is generally recognized as an effective supplement that promotes mental clarity and cognitive function. These health benefits of green tea have been attributed mainly to its effective component, epigallocatechin gallate (EGCG). Because various catechin derivatives potently enhance these health benefits, we manipulated the extraction process with a high-temperature intervention. High-temperature-processed green tea extract (HTP-GTE) showed an elevated proportion of gallocatechin gallate (GCG) content. To investigate the preventive effects of HTP-GTE on cognitive decline, we found its neuroprotective effects against amyloidβ (Aβ)-induced neurotoxicity in neurons and clarified that GCG significantly inhibited Aβ aggregation. Moreover, we showed that HTP-GTE intake attenuated several cognitive-decline phenotypes in a model mouse of Alzheimer's disease. These beneficial effects of HTP-GTE against cognitive decline were due to the distinctive composition of the extract and suggest the possibility that HTP-GTE supplementation could attenuate cognitive decline of Alzheimer's disease.

Study Type : Transgenic Animal Study

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Sayer Ji
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