Highlights
- •T2DM patients with increased VAT volume are at risk for premature atherosclerosis.
- •VAT volume is positively associated with arterial inflammation in early T2DM.
- •Premature atherosclerosis was imaged with FDG and quantified as meanTBR.
- •The association of VAT with meanTBR was independent of VAT dysfunction biomarkers.
Abstract
Background and aims
Type 2 diabetes mellitus (T2DM) is commonly associated with abdominal obesity, predominantly
with high visceral adipose tissue (VAT), and is accompanied by premature atherosclerosis.
However, the association between VAT and subcutaneous adipose tissue (SAT) with premature
atherosclerosis and (i.e. arterial) inflammation is not completely understood. To
provide more insight into this association, we investigated the association between
arterial 18F-fluordeoxyglucose (FDG) positron emission tomography (PET) uptake, as a measure
of arterial inflammation, and metabolic syndrome (MetS) markers in early T2DM patients.
Methods
Forty-four patients with early T2DM, without glucose lowering medication, were studied
(median age 63 [IQR 54–66] years, median BMI 30.4 [IQR 27.5–35.8]). Arterial inflammation
was quantified using glucose corrected maximum standardized uptake value (SUVmax) FDG of the aorta, carotid, iliac, and femoral arteries, and corrected for background
activity (blood pool) as target-to-background ratio (meanTBR). VAT and SAT volumes (cm3) were automatically segmented using computed tomography (CT) between levels L1-L5.
Non-alcoholic fatty liver disease (NAFLD) was assessed by liver function test and
CT.
Results
VAT volume, but not SAT volume, correlated with meanTBR (r = 0.325, p = 0.031). Linear regression models showed a significant association, even after sequential
adjustment for potentially influencing MetS components. Interaction term VAT volume
* sex and additional components including HbA1c, insulin resistance, NAFLD, adiponectin,
leptin, and C- reactive protein (CRP) did not change the independent association between
VAT volume and meanTBR.
Conclusions
CT-assessed VAT volume is positively associated with FDG-PET assessed arterial inflammation,
independently of factors thought to potentially mediate these effects. These findings
suggest that VAT in contrast to SAT is linked to early atherosclerotic changes in
T2DM patients.
Keywords
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Article info
Publication history
Published online: September 25, 2019
Accepted:
September 25,
2019
Received in revised form:
August 27,
2019
Received:
May 7,
2019
Identification
Copyright
© 2019 Elsevier B.V. All rights reserved.