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Published on: July 19, 2024

Tocotrienols reverse cardiovascular, metabolic and liver changes in high carbohydrate, high fat diet-fed rats

Weng-Yew Wong1, Hemant Poudyal, Leigh C Ward

  • 1School of Biomedical Sciences, The University of Queensland, Brisbane 4072, Australia. j.wong4@uq.edu.au

Nutrients
|December 4, 2012
PubMed

Insights

Palm tocotrienol-rich fraction (TRF) improved cardiovascular and liver function in rats with metabolic syndrome. TRF enhanced glucose and lipid profiles but had minimal impact on abdominal obesity.

Area of Science:

  • Biochemistry
  • Cardiovascular Science
  • Metabolic Science

Background:

  • Metabolic syndrome is a cluster of conditions increasing risk for heart disease, stroke, and diabetes.
  • Tocotrienols, a form of vitamin E, show potential benefits for lipid profiles and cardiovascular health.
  • The role of tocotrienols in metabolic syndrome remains largely uninvestigated.

Purpose of the Study:

  • To investigate the effects of palm tocotrienol-rich fraction (TRF) on diet-induced metabolic, cardiovascular, and liver dysfunction in rats.
  • To assess TRF's impact on key metabolic syndrome markers and organ function.

Main Methods:

  • Rats were fed a high carbohydrate, high fat diet for 16 weeks to induce metabolic syndrome.
  • TRF was administered to assess its effects on abdominal obesity, hypertension, glucose/insulin tolerance, cardiac function, and liver health.
  • Histological and biochemical analyses were performed to evaluate organ structure and function.

Main Results:

  • TRF treatment improved cardiac function, reduced ventricular stiffness and hypertension, and enhanced glucose and insulin tolerance.
  • TRF improved liver structure and function, decreasing plasma liver enzymes and inflammatory markers.
  • TRF reduced plasma free fatty acids and triglycerides, with a notable decrease in omental fat deposition.

Conclusions:

  • Palm tocotrienol-rich fraction (TRF) demonstrates protective effects on the heart and liver in a rat model of metabolic syndrome.
  • TRF improves glucose and lipid profiles, suggesting therapeutic potential for metabolic disorders.
  • While TRF shows benefits for metabolic syndrome markers, its effect on overall abdominal obesity was minimal in this study.

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