Cited by 29Viral Infections and Immunology ResearchCardiac Fibrosis and RemodelingAdipokines, Inflammation, and Metabolic Diseases

Impaired Expression of Cardiac Adiponectin in Leptin-Deficient Mice With Viral Myocarditis

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Takahashi, Takashi, Yu, Fei, Saegusa, Seiichiro, Sumino, Hiroyuki, Nakahashi, Takeshi, Iwai, Kunimitsu, Morimoto, Shigeto, Kurabayashi, Masahiko +1 more·2006·International Heart Journal

Abstract

A mouse model of encephalomyocarditis (EMC) virus-induced myocarditis was used to investigate the expression of adiponectin in damaged cardiomyocytes. We intraperitoneally injected EMC virus into leptin-deficient ob/ob (OB) mice and wild-type (WT) mice. OB mice were divided into two subgroups consisting of mice with no intervention and mice receiving leptin replacement starting simultaneously with viral inoculation. We determined differences in heart weight, cardiac histological score, numbers of infiltrating and apoptotic cells in the myocardium, expression levels of adiponectin and TNF-alpha mRNA in the heart, adiponectin immunoreactivity in myocytes, adiponectin and TNF-alpha concentrations in the heart, and immunoreactivity of adiponectin receptors in myocytes between OB mice and WT mice. There was significantly decreased adiponectin mRNA expression, immunoreactivity, and protein level in the heart, and reduced immunoreactivity of adiponectin receptor 1 in myocytes from OB mice on days 4 and 8 after viral inoculation as compared with those in WT mice, together with increased cardiac weight, severe inflammatory myocardial damage, and increased levels of cardiac TNF-alpha mRNA and protein. Replacement of leptin in OB mice inhibited the development of severe myocarditis through augmentation of adiponectin mRNA, immunoreactivity, and protein level, increased adiponectin receptor 1 immunoreactivity in myocytes, and suppressed levels of TNF-alpha mRNA and protein. These results suggest that impaired expression of cardiac adiponectin may contribute to the progression of viral myocarditis through enhanced expression of TNF-alpha under a leptin-deficient condition.

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  • Myocardial necrosis in obese mice with viral myocarditis was attenuated upon endogenous cardiac induction of adiponectin expression, suggesting this may represent a compensatory protective response.

    “Furthermore, myocardial necrosis in obese mice with viral myocarditis was attenuated upon endogenous cardiac induction of adiponectin expression, suggesting this may represent a compensatory protective response (167, 338, 340).”

    From Cardiac remodeling in obesity (2008) · cites this paper as [340]

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  1. Chan KC, Chou HH, Wu DJ, Wu YL, Huang CN. Diabetes mellitus has an additional effect on coronary artery disease. Jpn Heart J 2004; 45: 921-7.

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Authors
Takahashi, T., Yu, F., Saegusa, S., Sumino, H., Nakahashi, T., Iwai, K., Morimoto, S., Kurabayashi, M., & Kanda, T.
Affiliations
  • Kanazawa Medical University (JP)
  • Gunma University (JP)
Venue
International Heart Journal
Published
2006
Volume
47
Issue
1
Pages
107-123
ISSN
  • 1349-2365 (ISSN-L)
  • 1349-3299
OpenAlex
W2084553046
Cited by
29
References
31
Citations by year
2022: 1 · 2021: 1 · 2019: 1 · 2018: 3 · 2017: 1 · 2015: 2 · 2014: 1 · 2012: 1
FWCI
2.38
Type
journal article
Language
en
Open access
Locations
  • International Heart Journal (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Kanazawa Medical University (H2004-7)
  • Promotion and Mutual Aid Corporation for Private Schools of Japan
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 › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
Keywords
adiponectin, leptin deficiency, viral myocarditis, encephalomyocarditis virus, ob/ob mice, leptin replacement, TNF-α, AdipoR1, cardiomyocyte apoptosis, myocarditis
MeSH terms
Animals, Disease Models, Animal, Encephalomyocarditis virus, Female, Mice, Inbred C57BL, Myocarditis, RNA, Messenger, Tumor Necrosis Factor-alpha, Gene Expression, Cardiovirus Infections, Myocytes, Cardiac, Mice, Adiponectin

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