Oral coenzyme Q10 supplementation in patients with nonalcoholic fatty liver disease: effects on serum vaspin, chemerin, pentraxin 3, insulin resistance and oxidative stress

Arch Med Res. 2014 Oct;45(7):589-95. doi: 10.1016/j.arcmed.2014.11.001. Epub 2014 Nov 11.


Backgrounds and aims: Nonalcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver injury. Chronic exposure to oxidative stress leads to depletion of liver antioxidants and abnormal cytokine production; antioxidant therapy is one of the main therapeutic lines in NAFLD. In the current study we aimed to investigate the effect of coenzyme Q10 (coQ10) therapy on several adipocytokines and insulin resistance in patients with NAFLD.

Methods: In the current randomized double-blind placebo controlled trial 44 NAFLD patients were enrolled. After randomization into two groups, 22 patients received 100 mg/day coQ10 capsules and 22 patients received placebo daily for 4 weeks. BMI and WHR were calculated for patients at the beginning and end of the study and blood samples were obtained from the patients to measure serum concentrations of aspartate aminotransferase (AST), alanine aminotransferase (ALT), fasting serum glucose (FSG), insulin resistance (IR), vaspin, chemerin, pentraxin 3 (PTX3) and markers of oxidative stress including total antioxidant capacity (TAC) and malondialdehyde (MDA).

Results: After 4 weeks of coQ10 supplementation, waist circumference (WC) and serum AST and TAC concentrations significantly decreased in intervention group (p <0.05) but no significant changes occurred in placebo-treated group. In stepwise multivariate linear regression model, change in serum FSG was a significant predictor of changes in serum vaspin, chemerin and pentraxin 3 (p <0.001).

Conclusions: The present study showed a potential for coQ10 therapy in improving several anthropometric and biochemical variables in NAFLD. Longer studies with higher doses of coQ10 are required to further evaluate this potential benefit.

Keywords: Coenzyme Q10; Insulin resistance; Nonalcoholic fatty liver disease (NAFLD); Oxidative stress.

Publication types

  • Randomized Controlled Trial

MeSH terms

  • Adipokines / blood
  • Adult
  • Alanine Transaminase / blood
  • Antioxidants / administration & dosage*
  • Aspartate Aminotransferases / blood
  • Biomarkers / blood
  • Blood Glucose
  • C-Reactive Protein / analysis*
  • Chemokines / blood*
  • Dietary Supplements*
  • Double-Blind Method
  • Female
  • Humans
  • Insulin Resistance*
  • Intercellular Signaling Peptides and Proteins
  • Male
  • Middle Aged
  • Non-alcoholic Fatty Liver Disease / drug therapy*
  • Oxidative Stress / drug effects
  • Serpins / blood*
  • Serum Amyloid P-Component / analysis*
  • Ubiquinone / administration & dosage
  • Ubiquinone / analogs & derivatives*
  • Waist Circumference / drug effects
  • Young Adult


  • Adipokines
  • Antioxidants
  • Biomarkers
  • Blood Glucose
  • Chemokines
  • Intercellular Signaling Peptides and Proteins
  • RARRES2 protein, human
  • SERPINA12 protein, human
  • Serpins
  • Serum Amyloid P-Component
  • Ubiquinone
  • PTX3 protein
  • C-Reactive Protein
  • Aspartate Aminotransferases
  • Alanine Transaminase
  • coenzyme Q10