Vitamin D in Vascular Calcification: A Double-Edged Sword?

Area of Science:

• Cardiovascular Science
• Nephrology
• Endocrinology

Background:

• Vascular calcification (VC) is a complex condition linked to aging, diabetes, and kidney dysfunction, with significant impacts on patient outcomes.
• Current understanding of VC pathophysiology is limited, hindering the development of effective treatments.
• Traditional cardiovascular risk factors do not fully explain VC, suggesting involvement of mineral balance, hormonal regulation, and vascular remodeling.

Purpose of the Study:

• To review the current understanding of vascular calcification pathophysiology.
• To focus on the pathogenic role of vitamin D in vascular calcification.
• To provide new insights into the mechanisms underlying VC.

Main Methods:

• Literature review of recent evidence on vascular calcification.
• Analysis of the interplay between mineral homeostasis and VC.
• Examination of the role of hormones like parathyroid hormone (PTH) and fibroblast growth factor 23 (FGF-23).

Main Results:

• Perturbed mineral balance, including calcium, phosphate, and vitamin D homeostasis, is central to VC.
• Deregulation of vitamin D metabolism, dietary calcium, and renal mineral handling contribute to imbalances in systemic calcium and phosphate levels.
• Endothelial cell dysfunction, influenced by these imbalances, plays a role in both bone and soft tissue calcification.

Conclusions:

• Vitamin D metabolism plays a critical pathogenic role in vascular calcification.
• Understanding the complex interplay of mineral balance and hormonal regulation offers new therapeutic targets for VC.
• Further research into vitamin D's role is crucial for developing preventative and therapeutic strategies for vascular calcification.