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  • Title: Influence of insulin resistance, secretion, and clearance on serum cholesterol, triglycerides, lipoprotein cholesterol, and blood pressure in healthy men.
    Author: Godsland IF, Crook D, Walton C, Wynn V, Oliver MF.
    Journal: Arterioscler Thromb; 1992 Sep; 12(9):1030-5. PubMed ID: 1525117.
    Abstract:
    Relations between serum lipids, lipoproteins, blood pressure, and insulin metabolism were investigated in 158 healthy men aged 19-77 years and with body mass indexes (BMIs) of 19-41 kg.m-2. Mathematical modeling analysis of glucose, insulin, and C-peptide concentrations during an intravenous glucose tolerance test was used to measure parameters of insulin metabolism. In univariate analysis, both fasting and postglucose insulin concentrations showed significant positive associations with fasting serum triglyceride levels (r = 0.33 and 0.38, respectively) and systolic (r = 0.22 and 0.26) and diastolic (r = 0.21 and 0.24) blood pressure and negative associations with high density lipoprotein subfraction 2 cholesterol (HDL2; r = -0.21 and -0.25). In multivariate analysis, the associations between insulin and HDL2 cholesterol concentrations were found to depend on triglyceride levels. Insulin resistance and basal pancreatic insulin secretion showed significant positive associations with serum triglycerides, which were independent of the effects of age, BMI, and fat distribution. Hepatic insulin throughout was independently associated with HDL2 cholesterol. Associations of insulin-related variables with blood pressure were generally dependent on age and BMI. These results underline the importance of insulin sensitivity and insulin concentrations as determinants of triglyceride metabolism. They also indicate a close relation between hepatic insulin handling and HDL2 concentration that is independent of triglyceride metabolism.
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