Chromium picolinate inhibits cholesterol-induced stimulation of platelet aggregation in hypercholesterolemic rats

A A Seif1

  • 1Physiology Department, Faculty of Medicine, Ain Shams University, Abbassyia District of Cairo Governorate, on Ahmed Lotfy Al-Sayed Street, Cairo, Egypt, ansamseif@yahoo.com.

Insights

Chromium supplementation normalized high-fat diet-induced increases in plasma lipids and platelet aggregation in rats. This suggests chromium may help manage cardiovascular risk factors associated with hypercholesterolemia.

Area of Science:

  • Biochemistry
  • Cardiovascular Research
  • Nutritional Science

Background:

  • Hypercholesterolemia is linked to increased myocardial infarction risk via enhanced platelet aggregation.
  • Chromium supplementation is known to potentially reduce plasma lipid levels.

Purpose of the Study:

  • To investigate the inhibitory effect of chromium on platelet aggregation in hypercholesterolemic conditions.
  • To assess chromium's impact on lipid profiles and platelet activity.

Main Methods:

  • Albino rats were divided into control, chromium-supplemented, high-fat diet, and high-fat diet with chromium groups.
  • Evaluated adenosine diphosphate and collagen-induced platelet aggregation.
  • Measured plasma lipids (cholesterol, triglycerides) and biomarkers (apolipoproteins, thromboxane B2).

Main Results:

  • High-fat diet significantly elevated plasma lipids and platelet aggregation.
  • Chromium supplementation normalized these elevations in hypercholesterolemic rats.
  • Chromium had no significant effect on lipid or platelet activity in normolipemic rats.

Conclusions:

  • Chromium supplementation improves lipid profiles in hypercholesterolemic rats.
  • It effectively reduces platelet hyperaggregability to normal levels.
  • The primary mechanism appears to be a reduction in plasma cholesterol.
Abstract

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