Journal
EUROPEAN HEART JOURNAL-CARDIOVASCULAR IMAGING
Volume 17, Issue 12, Pages 1361-1367Publisher
OXFORD UNIV PRESS
DOI: 10.1093/ehjci/jew174
Keywords
liver fat; steatosis; vascular disease; epidemiology; imaging; CT
Funding
- Erasmus MC
- Netherlands Organization for Scientific Research (NWO)
- Netherlands Organization for Health Research and Development (ZonMW)
- Research Institute for Diseases in the Elderly (RIDE)
- Netherlands Genomics Initiative
- Ministry of Education, Culture and Science
- Ministry of Health, Welfare and Sports
- European Commission (DG XII)
- Municipality of Rotterdam
- Erasmus University Rotterdam
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Aims Increasing evidence suggests involvement of the amount of liver fat in the development of cardiovascular disease. We investigated the relation of liver fat with cardiovascular risk factors and subclinical vascular disease in the general population. Methods and results Between 2003 and 2006, 2351 persons from the population-based Rotterdam Study (mean age 69.6 +/- 6.7 years, 47.2% males) underwent non-enhanced computed tomography. We measured the mean liver attenuation value in Hounsfield units and quantified the following markers of subclinical vascular disease: epicardial fat volume and volumes of coronary (CAC), aortic (AAC), extracranial (ECAC), and intracranial carotid calcification (ICAC). Using linear regression, we investigated associations between traditional cardiovascular risk factors and mean liver attenuation. We also investigated relations of mean liver attenuation with markers of subclinical vascular disease, adjusting for cardiovascular risk factors. We found strong associations of waist circumference, diastolic blood pressure, and diabetes with lower mean liver attenuation [multivariable-adjusted beta per unit increase in waist circumference: -2.54 (95% CI: -3.10; -1.99); diastolic blood pressure: -0.52 (95% CI: -0.88; -0.17); and the presence of diabetes: -21.91 (95% CI: -31.76; -12.06)]. Moreover, we found that larger mean liver attenuation values were associated with smaller volumes of epicardial fat and CAC, independent of cardiovascular risk factors [beta per 1-SD increase in mean liver attenuation value: -0.05 (95% CI: -0.08; -0.02) and -0.05 (95% CI: -0.10; -0.01), respectively]. Conclusion Larger amounts of liver fat are related to larger volumes of epicardial fat and CAC, independent of traditional cardiovascular risk factors, providing important novel insights into the role of liver fat as a marker of vascular disease.
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