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Current Vascular Pharmacology

Eiditor-in-Chief

ISSN (Print): 1570-1611
ISSN (Online): 1875-6212

Review Article

Diabetes, Incretin Therapy and Thoracic Aortic Aneurysm – What Does the Evidence Show?

Author(s): Camilla Krizhanovskii * and Anders Franco-Cereceda

Volume 17 , Issue 5 , 2019

Page: [432 - 439] Pages: 8

DOI: 10.2174/1570161116666180828155622

Price: $58

Abstract

Epidemiological evidence supports a reduced prevalence of Thoracic Aortic Aneurysm (TAA) and Abdominal Aortic Aneurysm (AAA) in patients with Diabetes (DM). The mechanisms underlying this negative association are unknown. Some studies support that hyperglycemia has effects on the Extracellular Matrix (ECM), resulting in collagen cross-links and altered proteolytic activity, which ultimately counteracts aneurysm formation. However, recent experimental research indicates that incretin- based anti-diabetic therapy and Glucagon-Like Peptide-1 (GLP-1) may reduce the formation of TAA. GLP-1 is a peptide hormone, released from intestinal L-cells in response to hormonal, neural and nutrient stimuli. In addition to potentiation of meal-stimulated insulin secretion, GLP-1 signaling exerts numerous pleiotropic effects on various tissues, including protective effects on the myocardium and vascular endothelium. Recent studies also report protective effects of GLP-1 based therapy on the formation of aneurysms in animal models and direct effects of GLP-1 signaling on the molecular mechanisms suggested to influence TAA formation, including inflammation, proteolytic activity and collagen composition. In this narrative review, we present the available evidence for effects of GLP-1 on experimental aneurysm development and discuss the potential role of GLP-1 in aneurysm formation based on available data from pre-clinical and clinical studies.

Keywords: Thoracic aortic aneurysm, aorta, proteolytic activity, incretin therapy, type 2 diabetes, glucagon-like peptide-1.

Graphical Abstract
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