Concentrations of proinsulin like molecules predict coronary heart disease risk independently of insulin: prospective data from the Caerphilly Study

Diabetologia
J S Yudkinaaerphilly Study

Abstract

Higher concentrations of insulin correlate with several coronary heart disease (CHD) risk factors and have been shown to predict incident CHD in several studies, leading to hypotheses concerning the proatherogenic properties of insulin. However, in cross-sectional studies, relationships of concentrations of the insulin precursor molecules, proinsulin and des 31, 32 proinsulin, relate as strongly, or more strongly, to levels of risk factors and to (prevalent) CHD. We investigated the relationship between concentrations of insulin, measured with a specific assay, and of proinsulin-like molecules, and risk factors in 1181 non-diabetic men 50-64 years old during Phase II of the Caerphilly Study. We also related concentrations of these molecules to incident CHD during the 10-14 years follow-up. The relationship between concentrations of insulin, of proinsulin and of des 31, 32 proinsulin and BMI ( r = 0.36-0.45), triglyceride (r = 0.25-0.31), high density lipoprotein- (HDL-) cholesterol (r = -0.17 to -0.21), systolic ( r = 0.05-0.11) and diastolic blood pressure ( r = 0.11-0.15) were similarly close, those with risk factors being somewhat and similarly reduced after adjustment for BMI. The correlation between insulin and of proinsul...Continue Reading

Citations

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