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Coenzyme Q10 does not improve peripheral insulin sensitivity in statin-treated men and women; the LIFESTAT study

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  • Anja Birk Kuhlman
  • Thomas Morville
  • Tine Lovsø Dohlmann
  • Maria Hansen
  • Bo Kelly
  • Jørn Wulff Helge
  • Flemming Dela
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Simvastatin is a cholesterol-lowering drug that is prescribed to lower the risk of cardiovascular disease following high levels of blood cholesterol. There is a possible risk of new onset diabetes mellitus with statin treatment but the mechanisms behind are unknown. Coenzyme Q10 (CoQ10) supplementation has been found to improve glucose homeostasis in various patient populations and may increase muscle GLUT4 content. Our aim was to investigate whether eight weeks of CoQ10 supplementation can improve glucose homeostasis in simvastatin treated subjects. Thirty-five men and women in treatment with minimum 40 mg of simvastatin daily were randomized to receive either 2 x 200 mg/d of CoQ10 supplementation or placebo for eight weeks. Glucose homeostasis was investigated with fasting blood samples, OGTT and IVGTT. Insulin sensitivity was assessed with the hyperinsulinemic, euglycemic clamp. Different indices were calculated from fasting samples and OGTT as secondary measures of insulin sensitivity. A muscle biopsy was obtained from the vastus lateralis muscle for muscle protein analyzes. There were no changes in body composition, fasting plasma insulin, fasting plasma glucose or 3hr-glucose with intervention, but HbA1c decreased with time. Glucose homeostasis measured as the AUC for glucose, insulin and C-peptide during OGTT was unchanged after intervention. Insulin secretory capacity was also unaltered after CoQ10 supplementation. Insulin sensitivity was unchanged but hepatic insulin sensitivity (HOMA2-%S) increased. No changes in muscle GLUT4 content was observed after intervention. CoQ10 supplementation does not change muscle GLUT4 content, insulin sensitivity or secretory capacity, but hepatic insulin sensitivity may improve.

Original languageEnglish
JournalApplied Physiology, Nutrition and Metabolism
Volume44
Issue number5
Pages (from-to)485-492
Number of pages8
ISSN1715-5312
DOIs
Publication statusPublished - May 2019

ID: 55467066