Evidence map›Paper›PMID 32046706›Full record

ArticleBMC complementary medicine and therapies2020

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

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

Open access · goldAbstract read
In one paragraph

Article in BMC complementary medicine and therapies, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.3field-weighted citation impact, top 20% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 20 citations in OpenAlex.

  1. Role of gallic acid in sarcopenia in D-galactose-treated mice.Iranian journal of basic medical sciences · 2026
    Article
  2. Review
  3. Article
  4. Review
  5. Article
  6. Review
  7. Review
  8. Review
  9. Plant Bioactives in the Treatment of Inflammation of Skeletal Muscles: A Molecular Perspective.Evidence-based complementary and alternative medicine : eCAM · 2022
    Review
  10. Article
  11. Review
  12. (-)-Epicatechin-Enriched Extract fromAntioxidants (Basel, Switzerland) · 2021
    Article
  13. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 4 institutions in 1 country.

Ki-Bae HongBK21 Plus, College of Health Science, Korea University, Seoul, 02841, Republic of Korea.
Hee-Seok LeeDepartment of Food Science and Technology, Chung-Ang University, Anseong, 17546, Republic of Korea.
Jeong Sup HongAnimal Center and Preclinical Evaluation Research Institute, Yonam College, Cheonan, 31005, Republic of Korea.
Dong Hyeon KimBTC Corporation, #703, Technology Development Center, 705 Haean-ro, Sangnok-gu, Ansan-si, Gyeonggi-do, Republic of Korea.
Joo Myung MoonBTC Corporation, #703, Technology Development Center, 705 Haean-ro, Sangnok-gu, Ansan-si, Gyeonggi-do, Republic of Korea.
Yooheon ParkDepartment of Food Science and Biotechnology, Dongguk University, Goyang, 10326, Republic of Korea. ypark@dongguk.edu.
Cheonan Yonam College · KRChung-Ang University · KRDongguk University · KRKorea University · KR

Funding

the Ministry of SMEs and Startups S2449634
6 · The paper itself

Abstract

backgroundThe 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.

methodsThis 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.

resultsThe 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).

conclusionsTaken 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.

Indexed as

AnimalsAntioxidantsCamellia sinensisCarboxylic Ester HydrolasesCatechinCell LineMiceMuscle DevelopmentMuscle Fibers, SkeletalOxidative StressPlant ExtractsRepublic of KoreaTeaAntioxidantsCarboxylic Ester HydrolasesCatechinPlant ExtractstannaseTea(−)-epicatechin(−)-epigallocatechinSarcopeniaSkeletal muscle massTannase-converted green tea extract

Identifiers

PMID32046706
PMCPMC7076851
OpenAlexW3007487439

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.