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Published in: Seminars in Immunopathology 1/2009

01-06-2009 | Review

Advanced glycation end products and C-peptide—modulators in diabetic vasculopathy and atherogenesis

Authors: Daniel Walcher, Nikolaus Marx

Published in: Seminars in Immunopathology | Issue 1/2009

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Abstract

Patients with insulin resistance and early type 2 diabetes exhibit an increased propensity to develop a diffuse and extensive pattern of arteriosclerosis. Diabetic subjects show a remarkable increase in vascular complications, including myocardial infarction and strokes. The accelerated atherosclerosis in these patients is likely to be multifactorial. In this review, we focus on the advanced glycation end product (AGE)–receptor for AGE (RAGE) axis and the role of C-peptide as a mediator of lesion development. AGEs are proteins or lipids that become glycated after exposure to sugars. By engaging the RAGEs, AGEs induce the expression of proinflammatory mediators in various vascular cell types and are involved in a variety of microvascular and macrovascular complications. In animal models, interruption of the AGE–RAGE interaction reduces lesion size and plaque development and RAGE deficiency in a RAGE−/−/apolipoprotein E−/− double knockout mouse attenuates the development of atherosclerosis in diabetes. On the other side, patients with type 2 diabetes show increased levels of C-peptide and over the last years various groups examined the effect of C-peptide in vascular cells as well as its potential role in lesion development. Recent data suggest that the proinsulin cleavage product C-peptide could play a causal role in atherogenesis by promoting monocyte and CD4-positive lymphocyte recruitment in early arteriosclerotic lesions and by inducing the proliferation of vascular smooth muscle cells. The following review will summarize these two pathophysiological aspects and discuss on the one hand the potential role of the activated AGE–RAGE axis in diabetes-accelerated atherogenesis and on the other hand the role of C-peptide as a mediator in lesion development in patients with type 2 diabetes.
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Metadata
Title
Advanced glycation end products and C-peptide—modulators in diabetic vasculopathy and atherogenesis
Authors
Daniel Walcher
Nikolaus Marx
Publication date
01-06-2009
Publisher
Springer-Verlag
Published in
Seminars in Immunopathology / Issue 1/2009
Print ISSN: 1863-2297
Electronic ISSN: 1863-2300
DOI
https://doi.org/10.1007/s00281-009-0144-9

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