Serum levels of soluble form of receptor for advanced glycation end products (sRAGE) are positively associated with circulating AGEs and soluble form of VCAM-1 in patients with type 2 diabetes

Microvasc Res. 2008 May;76(1):52-6. doi: 10.1016/j.mvr.2007.09.004. Epub 2007 Oct 5.

Abstract

We have recently found that soluble form of receptor for advanced glycation end products (sRAGE) levels are positively associated with inflammatory biomarkers and the presence of coronary artery disease (CAD) in type 2 diabetic patients. Since advanced glycation end products (AGEs) up-regulate RAGE expression and endogenous sRAGE could be generated from the cleavage of cell surface RAGE, it is conceivable that sRAGE is positively associated with circulating AGEs levels in diabetes. In this study, we examined whether sRAGE were correlated to circulating levels of AGEs and soluble forms of vascular cell adhesion molecule-1 (sVCAM-1) and intercellular adhesion molecule-1 (sICAM-1) in patients with type 2 diabetes. Eighty-two Japanese type 2 diabetic patients underwent a complete history and physical examination, determination of blood chemistries, sRAGE, AGEs, sVCAM-1 and sICAM-1. Multiple regression analysis revealed that serum levels of AGEs and sVCAM-1 were independently correlated with sRAGE. This study demonstrated that serum levels of sRAGE were positively associated with circulating AGEs and sVCAM-1 levels in type 2 diabetic patients. Our present observations suggest sRAGE level may be elevated in response to circulating AGEs, thus being a novel marker of vascular injury in patients with type 2 diabetes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Aged, 80 and over
  • Biomarkers / blood
  • Body Mass Index
  • Coronary Artery Disease / blood
  • Coronary Artery Disease / complications
  • Diabetes Complications / blood
  • Diabetes Complications / diagnosis
  • Diabetes Mellitus, Type 2 / blood*
  • Diabetes Mellitus, Type 2 / complications
  • Diabetic Nephropathies / blood
  • Diabetic Nephropathies / diagnosis
  • Female
  • Glycation End Products, Advanced / blood*
  • Humans
  • Intercellular Adhesion Molecule-1 / blood
  • Linear Models
  • Male
  • Middle Aged
  • Multivariate Analysis
  • Receptor for Advanced Glycation End Products
  • Receptors, Immunologic / blood*
  • Solubility
  • Vascular Cell Adhesion Molecule-1 / blood*
  • Vascular Diseases / blood
  • Vascular Diseases / diagnosis

Substances

  • Biomarkers
  • Glycation End Products, Advanced
  • Receptor for Advanced Glycation End Products
  • Receptors, Immunologic
  • Vascular Cell Adhesion Molecule-1
  • Intercellular Adhesion Molecule-1