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Close relation of fasting insulin-like growth factor binding protein-1 (IGFBP-1) with glucose tolerance and cardiovascular risk in two populations

Heald, A H; Cruickshank, J K; Riste, L K; Cade, J E; Anderson, S; Greenhalgh, A; Sampayo, J; Taylor, W; Fraser, W; White, A; Gibson, J M

Diabetologia. 2001;44(3):333-339.

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Aims/hypothesis. Insulin resistance/hyperinsulin-aemia is implicated in the development of cardiovascular disease and diabetes but its role and causal pathways are not clear. We tested the hypothesis that the insulin-like growth factor system is independently associated with cardiovascular risk within susceptible populations based on previous reports of the links between low circulating insulin-like growth factor binding protein-1 concentrations and increased macrovascular disease in Type II (non-insulin-dependent) diabetes mellitus. Methods. In a population-based study 272 subjects (142 subjects of European and 130 Pakistani of origin) underwent a 75 g oral glucose tolerance test and standardised anthropometry. Fasting concentrations of insulin-like growth factor binding protein-1 (IGFBP-1), insulin-like growth factor-I (IGF-I), insulinlike growth factor-II (IGF-II), intact insulin and lipids were measured and were related to 2-h glucose tolerance test status. Insulin sensitivity was calculated using the homeostasis model assessment (HOMA). Results. Insulin-like growth factor binding protein-1 was significantly lower in subjects with impaired glucose tolerance when compared with normal glucose tolerance in both ethnic groups (Europeans F = 6.7, p = 0.002 and Pakistanis F = 4.4, p = 0.01). Multiple linear regression modelling showed that insulin-like growth factor binding protein-1 was independently associated with 2-h glucose (P = 0.16, p = 0.009) and logistic regression indicated a 40 % reduction in risk of impaired glucose tolerance for every 2.7 ng/ml increase in the insulin-like growth factor binding protein-1 concentration [odds ratio 0.6 (CI = 0.49-0.71), p = 0.001)]. In addition, insulin-like growth factor binding protein-1 was significantly correlated negatively with several established cardiovascular factors, and positively with insulin sensitivity. Conclusion/interpretation. Insulin-like growth factor binding protein-1 is closely related to risk factors for diabetes and cardiovascular disease in people of European and Pakistani origin. It has potential use as a marker of (hepatic) insulin resistance in clinical intervention studies and further implicates the insulin-like growth factor system in the development of macrovascular disease.

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Created by:
Gibson, Martin
15th January, 2012, 15:04:02
Last modified by:
Gibson, Martin
Last modified:
1st February, 2013, 19:48:29

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