Effect of tocopheryl phosphate on key biomarkers of inflammation: Implication in the reduction of atherosclerosis progression in a hypercholesterolaemic rabbit model

Clin Exp Pharmacol Physiol. 2010 May;37(5-6):587-92. doi: 10.1111/j.1440-1681.2010.05356.x. Epub 2010 Jan 17.

Abstract

1. Many studies have evaluated the effectiveness of alpha-tocopherol (vitamin E) in the development and progression of cardiovascular diseases, with conflicting results reported on the protective effect of this anti-oxidant. 2. The present study examined the effectiveness of a novel tocopheryl phosphate mixture (TPm) compared with that of alpha-tocopherol (TA) on key pro-inflammatory markers involved in atherogenesis, including interleukin (IL)-1beta, IL-6, IL-8, plasminogen activator inhibitor-1, tumour necrosis factor-alpha and C-reactive protein (CRP), as well as vascular function and lesion development in rabbits fed a 2% cholesterol diet. 3. Treatment with TPm, incorporated into the rabbit food at four doses ranging from 60 to 360 mg/kg chow, resulted in a significant reduction in plasma levels of all pro-inflammatory cytokines and biomarkers that appeared to be somewhat dose dependent. Conversely, treatment with TA, at a dose equivalent to the highest dose of TPm used, only decreased plasma levels of CRP, IL-6 and IL-8. Both TPm and TA treatment significantly improved vascular function to a similar extent, although TPm was more effective in reducing lesion development. 4. The reduction in these key pro-inflammatory markers appears to follow the improvement in the atherogenic state of the animals, indicating that the anti-inflammatory properties of TPm may be potentially beneficial in inflammatory disease states.

MeSH terms

  • Animals
  • Antioxidants / administration & dosage
  • Antioxidants / therapeutic use*
  • Aorta / drug effects
  • Aorta / pathology
  • Aorta / physiopathology
  • Atherosclerosis / blood
  • Atherosclerosis / etiology
  • Atherosclerosis / immunology
  • Atherosclerosis / pathology
  • Atherosclerosis / prevention & control*
  • Biomarkers / blood
  • Cytokines / blood*
  • Cytokines / immunology
  • Diet, Atherogenic
  • Disease Models, Animal
  • Dose-Response Relationship, Drug
  • Hypercholesterolemia / blood
  • Hypercholesterolemia / complications*
  • Hypercholesterolemia / immunology
  • Hypercholesterolemia / pathology
  • In Vitro Techniques
  • Lipids / blood
  • Male
  • Rabbits
  • Treatment Outcome
  • Vasodilation / drug effects
  • alpha-Tocopherol / administration & dosage
  • alpha-Tocopherol / analogs & derivatives*
  • alpha-Tocopherol / therapeutic use

Substances

  • Antioxidants
  • Biomarkers
  • Cytokines
  • Lipids
  • alpha-tocopherol phosphate
  • alpha-Tocopherol