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Am Heart J. 2012 Aug;164(2):251-8. doi: 10.1016/j.ahj.2012.05.010. Epub 2012 Jul 7.

High-sensitivity C-reactive protein as an independent predictor of progressive myocardial functional deterioration: the multiethnic study of atherosclerosis.

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  • 1Johns Hopkins University, Baltimore, MD 21287, USA.

Abstract

BACKGROUND:

Systemic inflammation has been linked to the development of heart failure in population studies including Multi-Ethnic Study of Atherosclerosis (MESA), but little evidence exists regarding potential mechanism of this relationship. In this study, we used longitudinal magnetic resonance imaging follow-up analysis to examine whether C-reactive protein (CRP) levels relate to progressive myocardial functional deterioration as a potential mechanism of incident heart failure.

METHODS:

Regional myocardial functional data from MESA participants who had baseline CRP measurement and also underwent tagged cardiac magnetic resonance imaging both at baseline and at 5-year follow-up were analyzed. Left ventricular midwall and midslice peak circumferential strain (Ecc), of which a more negative value denotes stronger regional myocardial function, was measured. Circumferential strain change was calculated as the difference between baseline and follow-up Ecc.

RESULTS:

During the follow-up period, participants (n = 785) with elevated CRP experienced a decrease in strain, independent of age, gender, and ethnicity (B = 0.081, ∆Ecc change per 1 mg/L CRP change, 95% CI 0.036-0.126, P < .001, model 1) and, additionally, beyond systolic blood pressure, heart rate, diabetes, smoking status, body mass index, current medication, and glomerular filtration rate (B = 0.099, 0.052-0.145, P < .001, model 2). The relationship remained statistically significant after further adjustment for left ventricular mass, coronary calcium score, and interim clinical coronary events (B = 0.098, 0.049-0.147, P < .001, model 3).

CONCLUSION:

Higher CRP levels are related to progressive myocardial functional deterioration independent of subclinical atherosclerosis and clinical coronary events in asymptomatic individuals without previous history of heart disease.

Copyright © 2012 Mosby, Inc. All rights reserved.

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PMID:
22877812
[PubMed - indexed for MEDLINE]
PMCID:
PMC3417227
Free PMC Article

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