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Validation of insulin sensitivity surrogate indices and prediction of clinical outcomes in individuals with and without impaired renal function
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2014 (English)In: Kidney International, ISSN 0085-2538, E-ISSN 1523-1755, Vol. 86, no 2, 383-391 p.Article in journal (Refereed) Published
Abstract [en]

As chronic kidney disease (CKD) progresses with abnormalities in glucose and insulin metabolism, commonly used insulin sensitivity indices (151s) may not be applicable in individuals with CKD. Here we sought to validate surrogate ISls against the glucose disposal rate by the gold-standard hyperinsulinemic euglycemic glucose clamp (HEGC) technique in 1074 elderly men of similar age (70 years) of whom 495 had and 579 did not have CKD (estimated glomerular filtration rate (eGFR) under 60 ml/min per 1.73 m2 (median eGFR of 46 ml/min per 1.73 m2)). All ISls provided satisfactory (weighted K over 0.6) estimates of the glucose disposal rate in patients with CKD. ISls derived from oral glucose tolerance tests (OGTTs) agreed better with HEGC than those from fasting samples (higher predictive accuracy). Regardless of CKD strata, all ISls allowed satisfactory clinical discrimination between the presence and absence of insulin resistance (glucose disposal rate under 4 mg/kg/min). We also assessed the ability of both HEGC and ISls to predict all-cause and cardiovascular mortality during a 10-year follow-up. Neither HEGC nor ISIs independently predicted mortality. Adjustment for renal function did not materially change these associations. Thus, ISls can be applied in individuals with moderately impaired renal function for diagnostic purposes. For research matters, OGTT-derived ISls may be preferred. Our data do not support the hypothesis of kidney function mediating insulin sensitivity (I5)-associated outcomes nor a role for IS as a predictor of mortality

Place, publisher, year, edition, pages
2014. Vol. 86, no 2, 383-391 p.
Keyword [en]
chronic kidney disease, clinical outcome, hyperinsulinemic, euglycemic glucose clamp, insulin resistance, insulin sensitivity index, mortality
National Category
Urology and Nephrology
URN: urn:nbn:se:uu:diva-231244DOI: 10.1038/ki.2014.1ISI: 000339987700024OAI: oai:DiVA.org:uu-231244DiVA: diva2:743929
Available from: 2014-09-05 Created: 2014-09-05 Last updated: 2014-09-05Bibliographically approved

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Ärnlöv, JohanCederholm, TommyRisérus, Ulf
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