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BMC Complementary Medicine and Therapies

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01-12-2020 | Sarcopenia | Research article

Effects of tannase-converted green tea extract on skeletal muscle development

Authors: Ki-Bae Hong, Hee-Seok Lee, Jeong Sup Hong, Dong Hyeon Kim, Joo Myung Moon, Yooheon Park

Published in: BMC Complementary Medicine and Therapies | Issue 1/2020

Abstract

Background

The aim of this study was to investigate the effect of tannase-converted green tea extract with a high (−)-epicatechin (EC), (−)-epigallocatechin (EGC), and gallic acid (GA) content on myotube density and fusion in normal and oxidative stress-induced C2C12 skeletal muscle cells. Although the use of green tea extract is considered beneficial, cellular and molecular mechanisms of action of tannase-converted green tea extracts that are used as potential muscle growth materials have not been thoroughly studied.

Methods

This study used histological analysis and molecular biology techniques, and compared the results with those for AMPK activator 5-aminoimidazole-4-carboxamide-1-β-D-ribonucleoside (AICAR) and green tea extracts.

Results

The myotube density of normal and oxidative stress-induced C2C12 cells was significantly higher in the tannase-converted green tea extract-treated group than that observed in the other groups (normal cells: P < 0.01; oxidative stress-induced cells: P < 0.05). In addition, tannase-converted green tea extract and green tea extract treatments significantly upregulated the genetic expression of myogenin, Myf5, and MyoD (P < 0.05). The levels of AMP-activated protein kinase-α (AMPKα) and muscle RING-finger protein-1 (MuRF-1) in the tannase-converted green tea extract group were higher than those in the AICAR and green tea extract groups (P < 0.05).

Conclusions

Taken together, our findings describe that the high levels of EC, EGC, and GA in the tannase-converted green tea extract are attributable to the morphological changes in C2C12 cells and intercellular signaling pathways. Therefore, tannase-converted green tea extract can be used in the treatment of sarcopenia.

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Title: Effects of tannase-converted green tea extract on skeletal muscle development
Authors: Ki-Bae Hong
Hee-Seok Lee
Jeong Sup Hong
Dong Hyeon Kim
Joo Myung Moon
Yooheon Park
Publication date: 01-12-2020
Publisher: BioMed Central
Keyword: Sarcopenia
Published in: BMC Complementary Medicine and Therapies / Issue 1/2020
Electronic ISSN: 2662-7671
DOI: https://doi.org/10.1186/s12906-020-2827-7

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Effects of tannase-converted green tea extract on skeletal muscle development

Abstract

Background

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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