Effects of β-carotene and α-tocopherol on the levels of tissue cholesterol and triglyceride in hypercholesterolemic rabbits

Kamalakshi C. Sulli, Jidong Sun, David W. Giraud, Rodney A. Moxley, Judy A. Driskell

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

Male New Zealand white rabbits were made hypercholesterolemic by feeding an atherogenic diet (0.5% cholesterol, 3% peanut oil, and 3% coconut oil) with and without β-carotene (25 mg/kg body weight given intravenously twice weekly) and/or α-tocopherol (0.5% of diet) for 8 weeks. Rabbits treated with combined β-carotene and α-tocopherol had significantly lower cholesterol contents in liver, heart, and plasma than control animals; heart and plasma cholesterol contents were also significantly lower in animals treated with β-carotene than in controls. Treatment with both antioxidants significantly increased triglyceride contents of liver and triceps, but not heart and plasma. Rabbits given both β-carotene and α-tocopherol had significantly lower values for tissue α-tocopherol than animals treated with α-tocopherol only, and significantly higher values for tissue β-carotene than animals treated with β-carotene only. Atherosclerotic lesion areas in the aortic arch, thoracic aorta, and abdominal aorta were positively correlated (r = 0.36-0.42) with plasma cholesterol concentrations and negatively correlated (r = -0.340.60) with plasma, liver, triceps, and heart α-tocopherol levels. Moderate levels of α-tocopherol supplementation with or without β-carotene may have a beneficial effect on tissue cholesterol contents and on the development of aortic atherosclerotic lesions in rabbits fed an atherogenic diet.

Original languageEnglish (US)
Pages (from-to)344-350
Number of pages7
JournalJournal of Nutritional Biochemistry
Volume9
Issue number6
DOIs
StatePublished - Jun 1998

Keywords

  • Atherosclerotic lesions
  • Cholesterol
  • Triglycerides
  • α-tocopherol
  • β-carotene

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Biochemistry
  • Molecular Biology
  • Nutrition and Dietetics
  • Clinical Biochemistry

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