Cited by 77Viral Infections and Immunology ResearchCardiac Fibrosis and RemodelingTea Polyphenols and Effects

Tea catechins improve left ventricular dysfunction, suppress myocardial inflammation and fibrosis, and alter cytokine expression in rat autoimmune myocarditis

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Suzuki, Jun-ichi, Ogawa, Masahito, Futamatsu, Hideki, Kosuge, Hisanori, Sagesaka, Yuko M., Isobe, Mitsuaki·2007·European Journal of Heart Failure

Abstract

BACKGROUND: Myocarditis is a clinically serious disease. Tea catechins have been shown to reduce inflammation; however the effects of catechins on the development of myocarditis have not been well studied. AIMS: To clarify the role of catechins, using an experimental autoimmune myocarditis (EAM) model. METHODS AND RESULTS: Lewis rats were immunized with porcine cardiac myosin to establish EAM. Tea catechins were administered orally from day 0 to day 21 (Group A, n=12), from day 14 to day 21 (Group B, n=8), or saline (Group C, n=9) daily. Rats were killed on day 21. Echocardiograms indicated that Group A showed significantly improved cardiac function compared to Group C. Pathologically, non-treated EAM hearts showed severe myocardial cell infiltration and fibrosis; however Group A showed significantly less area. Immunohistochemistry revealed enhanced expression of NF-kappaB and ICAM-1 in non-treated EAM hearts, which was suppressed by catechin administration in Group A. mRNA levels of TNF-alpha were decreased and Th2 cytokines were markedly enhanced in Group A compared with the control group. Late catechin administration (Group B) showed limited effects on EAM. CONCLUSION: The catechins suppressed ventricular remodelling in EAM; thus catechin treatment might be a promising option for the prevention of EAM myocarditis.

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Crossref · 10.1016/j.ejheart.2006.05.007

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Authors
Suzuki, J.-I., Ogawa, M., Futamatsu, H., Kosuge, H., Sagesaka, Y. M., & Isobe, M.
Affiliations
Tokyo Medical and Dental University (JP)
Corresponding author
Suzuki, Jun-ichi
Venue
European Journal of Heart Failure
Published
2007-02-01
Volume
9
Issue
2
Pages
152-159
ISSN
  • 1388-9842 (ISSN-L)
  • 1879-0844
OpenAlex
W2038539642
Cited by
77
References
42
Citations by year
2026: 1 · 2025: 7 · 2024: 4 · 2023: 3 · 2022: 4 · 2021: 6 · 2020: 2 · 2018: 4 · 2017: 5 · 2016: 3 · 2015: 6 · 2014: 2 · 2013: 3 · 2012: 3
FWCI
2.83
Type
journal article
Language
en
Open access
Locations
  • European Journal of Heart Failure (publishedVersion)
  • PubMed (publishedVersion)
Funders
Japan Cardiovascular Research Foundation
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Viral Infections and Immunology Research
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Fibrosis and Remodeling
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Tea Polyphenols and Effects
Keywords
tea catechins, experimental autoimmune myocarditis, left ventricular dysfunction, myocarditis, myocardial fibrosis, cytokine expression, NF-κB, ICAM-1, TNF-α, Th2 cytokines, cardiac remodeling, Lewis rats
MeSH terms
Animals, Catechin, Fibrosis, Heart Ventricles, Immunohistochemistry, Inflammation, Male, Myocardium, Tea, Ultrasonography, Cytokines, Ventricular Dysfunction, Left, Nervous System Autoimmune Disease, Experimental, Models, Animal, Rats

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