Cited by 10Tea Polyphenols and EffectsMuscle Physiology and DisordersNutrition and Health in Aging

Tannase-Converted Green Tea Extract with High (−)-Epicatechin Inhibits Skeletal Muscle Mass in Aged Mice

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Hong, Ki-Bae, Lee, Hee-Seok, Kim, Dong Hyeon, Moon, Joo Myung, Park, Yooheon·2020·Evidence-based Complementary and Alternative Medicine

Abstract

The objective of this study was to investigate the effects of tannase‐converted green tea extract on body composition, muscle oxidative stress‐related factors, and differentiation‐related factors. The mean bone‐related parameters and body composition were determined by the live dual‐energy X‐ray absorptiometry (DEXA). Quantitative real‐time polymerase chain reaction (qRT‐PCR) and western blotting were used to determine mRNA expression and protein levels, respectively. The results of total mass testing in the epicatechin control (EC) and middle concentration tannase‐converted green tea extract (T1) intake groups were not significantly different compared with those in the control group; however, the high‐concentration tannase‐converted green tea extract (T2) group showed a significantly higher effect to the lean than that of all other groups (p < 0.05). The results of the assay of muscle differentiation‐related genes indicated that the expression levels in the EC and T1 groups (p < 0.05) and the expression levels in the T2 group (p < 0.01) were significantly different in the bicep femoris compared with that in the control group. The results of the SOD gene assay indicate that the expression levels in the EC and T1 groups (p < 0.05) and the expression level in the T2 group (p < 0.01) were significantly different in the bicep femoris compared with that in the control group. Additionally, SOD gene expression in the T2 group was significantly increased (p < 0.05) in the soleus compared with that in the control, EC and T1 groups. Our results suggest that tannase‐converted green tea extract prevents muscle loss and regulates the quantity and quality of muscle by the levels of antioxidant stress‐related enzymes and muscle differentiation factors to a greater extent than the administration of epicatechin and middle dose green tea extract.

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  • Dietary supplementation of epicatechin prevents muscle loss and regulates quantity and quality of muscle by increasing MyoD, superoxide dismutase, and catalase in biceps femoris and decreasing FoxO3a, myostatin, and MuRF1 in soleus of ICR mice.

    “Dietary supplementation of epicatechin prevents muscle loss and regulates the quantity and quality of muscle by increasing the expression of MyoD, superoxide dismutase, and catalase in the biceps femoris muscle and decreasing the expression of FoxO3a, myostatin, and MuRF1 in the soleus muscle of ICR mice [91].”

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Authors
Hong, K.-B., Lee, H.-S., Kim, D. H., Moon, J. M., & Park, Y.
Affiliations
  • Korea University (KR)
  • Chung-Ang University (KR)
  • Dongguk University (KR)
Corresponding author
Park, Yooheon
Venue
Evidence-based Complementary and Alternative Medicine
Publisher
Wiley
Published
2020-01
Volume
2020
Issue
1
Pages
4319398-4319398
ISSN
  • 1741-427X (ISSN-L)
  • 1741-4288
OpenAlex
W3004097891
Cited by
10
References
38
Citations by year
2024: 2 · 2023: 3 · 2022: 1 · 2021: 2 · 2020: 2
FWCI
1.31
Type
journal article
Language
en
Open access
Locations
  • Evidence-based Complementary and Alternative Medicine (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
Ministry of SMEs and Startups (S2449634)
Topics
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Tea Polyphenols and Effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
Keywords
tannase, green tea extract, epicatechin, skeletal muscle mass, muscle atrophy, aging, body composition, lean body mass, superoxide dismutase, myogenesis, biceps femoris, soleus muscle, antioxidant enzymes

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