DrugLib.com — Drug Information Portal

Rx drug information, pharmaceutical research, clinical trials, news, and more

Anti-inflammatory effects of eplerenone on viral myocarditis.

Author(s): Xiao J, Shimada M, Liu W, Hu D, Matsumori A

Affiliation(s): Department of Cardiovascular Medicine, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto 606-8507, Japan.

Publication date & source: 2009-04, Eur J Heart Fail., 11(4):349-53. Epub 2009 Feb 12.

Publication type: Comparative Study; Research Support, Non-U.S. Gov't

AIMS: Inflammation contributes to increased cardiovascular morbidity and mortality associated with activation of the renin-angiotensin-aldosterone system. The aim of this study was to investigate whether eplerenone, a selective aldosterone receptor antagonist, has anti-inflammatory effects on viral myocarditis. METHODS AND RESULTS: Four-week-old inbred male DBA/2 mice were inoculated intraperitoneally with 10 plaque-forming units (pfu) of the encephalomyocarditis (EMC) virus. Mice were fed with standard chow (control) or with chow containing 2.5 mg/kg of eplerenone, starting either on day 0 (inoculation) or day 7. Survival at 28 days was significantly higher in the mice which started eplerenone treatment on day 0 (35 vs. 15% in controls, each n = 40, P < 0.05). The area of myocardial fibrosis on day 28 was significantly smaller in the eplerenone-treated mice than in controls (19.8 +/- 2.6%, n = 14, vs. 33.4 +/- 5.4%, n = 6, mean +/- SEM, P < 0.05). Gene expression of mouse mast cell proteases-4 and -5, matrix metalloproteinase-9, and type I procollagen on day 6 after EMC virus inoculation was significantly decreased in the hearts of eplerenone-treated mice. CONCLUSION: These results suggest that eplerenone has anti-inflammatory effects, and exerts its beneficial effects on viral myocarditis by suppression of genes related to mast cells and cardiac remodelling in the hearts of mice.

Page last updated: 2009-10-20

-- advertisement -- The American Red Cross
Home | About Us | Contact Us | Site usage policy | Privacy policy

All Rights reserved - Copyright DrugLib.com, 2006-2017