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Effects of hyperinsulinemia on lipoprotein lipase, angiopoietinlike protein 4, and glycosylphosphatidylinositol-anchored high-density lipoprotein binding protein 1 in subjects with and without type 2 diabetes mellitus
Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
Umeå University, Faculty of Medicine, Department of Medical Biosciences.
Umeå University, Faculty of Medicine, Department of Medical Biosciences.
Umeå University, Faculty of Medicine, Department of Medical Biosciences, Physiological chemistry.
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2012 (English)In: Metabolism: Clinical and Experimental, ISSN 0026-0495, E-ISSN 1532-8600, Vol. 61, no 5, 652-660 p.Article in journal (Refereed) Published
Abstract [en]

Our aims were to compare the systemic effects of insulin on lipoprotein lipase (LPL) in tissues from subjects with different degrees of insulin sensitivity. The effects of insulin on LPL during a 4-hour hyperinsulinemic, euglycemic clamp were studied in skeletal muscle, adipose tissue, and postheparin plasma from young healthy subjects (YS), older subjects with type 2 diabetes mellitus (DS), and older control subjects (CS). In addition, we studied the effects of insulin on the expression of 2 recently recognized candidate genes for control of LPL activity: angiopoietin-like protein 4 (ANGPTL4) and glycosylphosphatidylinositol-anchored high-density lipoprotein binding protein 1. As an effect of insulin, LPL activity decreased by 20% to 25% in postheparin plasma and increased by 20% to 30% in adipose tissue in all groups. In YS, the levels of ANGPTL4 messenger RNA in adipose tissue decreased 3-fold during the clamp. In contrast, there was no significant change in DS or CS. Regression analysis showed that the ability of insulin to reduce the expression of ANGPTL4 was positively correlated with M-values and inversely correlated with factors linked to the metabolic syndrome. Expression of glycosylphosphatidylinositol-anchored high-density lipoprotein binding protein 1 tended to be higher in YS than in DS or CS, but the expression was not affected by insulin in any of the groups. Our data imply that the insulin-mediated regulation of LPL is not directly linked to the control of glucose turnover by insulin or to ANGPTL4 expression in adipose tissue or plasma. Interestingly, the response of ANGPTL4 expression in adipose tissue to insulin was severely blunted in both DS and CS. (C) 2012 Elsevier Inc. All rights reserved.

Place, publisher, year, edition, pages
Elsevier, 2012. Vol. 61, no 5, 652-660 p.
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Endocrinology and Diabetes
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URN: urn:nbn:se:umu:diva-56230DOI: 10.1016/j.metabol.2011.09.014ISI: 000303617600007OAI: oai:DiVA.org:umu-56230DiVA: diva2:533767
Available from: 2012-06-14 Created: 2012-06-12 Last updated: 2017-12-07Bibliographically approved

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Ruge, ToralphSukonina, ValentinaKroupa, OlessiaMakoveichuk, ElenaLundgren, MagdalenaSvensson, Maria K.Olivecrona, GunillaEriksson, Jan W.
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SurgeryDepartment of Medical BiosciencesPhysiological chemistryMedicine
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Metabolism: Clinical and Experimental
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