Relation between 25-hydroxyvitamin D3, apolipoprotein A-I, and high density lipoprotein cholesterol

Area of Science:

• Endocrinology
• Cardiovascular Medicine
• Nutritional Science

Background:

• Cardiovascular disease remains a leading cause of mortality globally.
• Vitamin D deficiency is increasingly recognized as a potential contributor to various health issues.
• Apolipoprotein A-I and HDL cholesterol are key indicators of cardiovascular health.

Purpose of the Study:

• To investigate the relationship between serum 25-hydroxyvitamin D3 levels and cardiovascular risk factors.
• To determine if this relationship is independent of serum calcium levels.

Main Methods:

• Cross-sectional survey of 185 men and 173 women from a Belgian population.
• Analysis of serum concentrations of 25-hydroxyvitamin D3, apolipoprotein A-I, and high-density lipoprotein (HDL) cholesterol.
• Statistical correlation analysis, controlling for potential confounding factors.

Main Results:

• A significant positive correlation was observed between 25-hydroxyvitamin D3 and apolipoprotein A-I in both sexes (p < 0.001).
• 25-hydroxyvitamin D3 also positively correlated with HDL cholesterol levels (p < 0.05 in men, p < 0.005 in women).
• These associations were independent of serum calcium levels.

Conclusions:

• Serum 25-hydroxyvitamin D3 levels are significantly associated with favorable lipid profiles, specifically apolipoprotein A-I and HDL cholesterol.
• These findings suggest a potential role for vitamin D in cardiovascular health beyond its effect on calcium metabolism.
• The observed correlations could explain a notable portion of the biological variation in these cardiovascular risk markers.