Journal
DIABETES OBESITY & METABOLISM
Volume 15, Issue 8, Pages 770-773Publisher
WILEY
DOI: 10.1111/dom.12089
Keywords
carotid intima-medial thickness; endothelial function; GLP-1 receptor agonists; obesity; type 2 diabetes mellitus
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Glucagon-like peptide-1 receptor agonists (GLP-1 RA) are used for treatment in type 2 diabetes mellitus (T2DM). Little is known about their cardiovascular (CV) impact. We sought to determine the effects of chronic treatment on vascular function in T2DM. Brachial artery endothelial-dependent flow-mediated dilation (FMD) and endothelial-independent glyceryl trinitrate (GTN) function and carotid intima-medial thickness (cIMT) were assessed in 11 severely obese T2DMs (4 females, 7 males: 55 +/- 8years, diabetes duration 8.3 +/- 4.7years mean +/- s.d.) before and after 6months GLP-1 RA. Body weight (5.3 +/- 1.2kg; p<0.05) and magnetic resonance imaging determined total and subcutaneous fat, but not visceral fat, decreased. Glycaemic control improved. There were no significant changes in FMD, GTN and cIMT (-1.1 +/- 0.4%, 0.3 +/- 3.0% and 0.00 +/- 0.04mm, respectively). Despite significant improvements in body composition and glycaemic control, 6months GLP-1 RA treatment did not modulate vascular function. Alternative strategies may therefore be needed to reduce the burden of CV risk in severely obese patients with long-standing T2DM.
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