Highlights
- •Patients with NAFLD had alterations in cardiac remodeling.
- •Hepatic steatosis and fibrosis are associated with diastolic heart dysfunction.
- •Those without NAFLD were more likely to have higher myocardial glucose uptake.
- •Hepatic fibrosis was correlated with decreased myocardial glucose uptake.
Background & Aims
Non-alcoholic fatty liver disease (NAFLD) is associated with increased cardiovascular
risk. Among categories of NAFLD, hepatic fibrosis is most likely to affect mortality.
Myocardial function and its energy metabolism are tightly linked, which might be altered
by an insulin resistant condition such as NAFLD. We investigated whether hepatic steatosis
and fibrosis were associated with myocardial dysfunction relative to myocardial glucose
uptake.
Methods
A total of 308 patients (190 without NAFLD, 118 with NAFLD) were studied in a tertiary
care hospital. Myocardial glucose uptake was evaluated at fasted state using [18F]-fluorodeoxyglucose-positron emission tomography (18FDG-PET). Hepatic steatosis and fibrosis were assessed by transient liver elastography
(Fibroscan®) with controlled attenuation parameter, which quantifies hepatic fat and
by surrogate indices (fatty liver index and NAFLD fibrosis score). Cardiac structure
and function were examined by echocardiogram.
Results
Compared to those without NAFLD, patients with NAFLD had alterations in cardiac remodeling,
manifested by increased left ventricular mass index, left ventricular end-diastolic
diameter, and left atrial volume index (all p <0.05). Hepatic steatosis was significantly associated with left ventricular filling
pressure (E/e’ ratio), which reflects diastolic dysfunction (p for trend <0.05). Those without NAFLD were more likely to have higher myocardial
glucose uptake compared to those with NAFLD. Significant hepatic fibrosis was also
correlated with diastolic dysfunction and impaired myocardial glucose uptake. Using
multivariable linear regression, E/e’ ratio was independently associated with hepatic
fibrosis (standardized β = 0.12 to 0.27; all p <0.05). Association between hepatic steatosis and E/e’ ratio was also significant
(standardized β = 0.10 to 0.15; all p <0.05 excluding the model adjusted for adiposity).
Conclusions
Hepatic steatosis and fibrosis are significantly associated with diastolic heart dysfunction.
This association is linked with myocardial glucose uptake evaluated by 18FDG-PET.
Lay summary
Non-alcoholic fatty liver disease is associated with an increased risk of cardiovascular
disease. More severe forms of non-alcoholic fatty liver disease, where hepatic fibrosis
occurs, are linked to increased mortality. In this study, we have shown that hepatic
steatosis and fibrosis are associated with subclinical myocardial dysfunction. This
association is linked to altered myocardial glucose uptake.
Graphical abstract

Graphical Abstract
Keywords
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Article info
Publication history
Published online: November 23, 2017
Accepted:
November 13,
2017
Received in revised form:
October 24,
2017
Received:
April 25,
2017
See Editorial, pages 640–642Identification
Copyright
© 2017 European Association for the Study of the Liver. Published by Elsevier B.V. All rights reserved.