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. 2009 Feb;52(2):235-9.
doi: 10.1007/s00125-008-1217-3. Epub 2008 Nov 22.

Are Elevated Circulating Intercellular Adhesion Molecule 1 Levels More Strongly Predictive of Diabetes Than Vascular Risk? Outcome of a Prospective Study in the Elderly

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Are Elevated Circulating Intercellular Adhesion Molecule 1 Levels More Strongly Predictive of Diabetes Than Vascular Risk? Outcome of a Prospective Study in the Elderly

N Sattar et al. Diabetologia. .

Abstract

Aims/hypothesis: The aim of this prospective study was to determine whether circulating intercellular adhesion molecule (ICAM) 1, as a potential surrogate of 'endothelial activation', is more strongly associated with risk of vascular events than with incident diabetes.

Methods: We related baseline ICAM-1 levels to vascular events (866 CHD and stroke events in 5,685 participants) and incident diabetes (292 in 4,945 without baseline diabetes) in the elderly over 3.2 years of follow-up.

Results: ICAM-1 levels correlated positively with triacylglycerol but negatively with LDL- and HDL-cholesterol. ICAM-1 levels were higher in those who developed diabetes (388.6 +/- 1.42 vs 369.4 +/- 1.39 ng/ml [mean+/-SD], p = 0.011) and remained independently associated with new-onset diabetes (HR 1.84, 95% CI 1.26-2.69, p = 0.0015 per unit increase in log[ICAM-1] after adjusting for classical risk factors and C-reactive protein). By contrast, ICAM-1 levels were not significantly (p = 0.40) elevated in those who had an incident vascular event compared with those who remained event-free, and corresponding adjusted risk associations were null (HR 0.98, 95% CI 0.80-1.22, p = 0.89) in analyses adjusted for other risk factors.

Conclusions/interpretation: We show that elevated ICAM-1 levels are associated with risk of incident diabetes in the elderly at risk, despite no association with incident cardiovascular disease risk. We suggest that perturbations in circulating ICAM-1 levels are aligned more towards diabetes risk.

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