Vitamin D and the Kidney: Two Players, One Console

Area of Science:

• Endocrinology
• Nephrology
• Bone Metabolism

Background:

• Vitamin D, a fat-soluble steroid, is essential for calcium and phosphorus regulation, impacting bone metabolism and parathyroid hormone levels.
• Emerging research highlights vitamin D's significant extra-bone effects, including roles in glucose homeostasis, cardiovascular health, and immune modulation.

Purpose of the Study:

• To provide a comprehensive overview of vitamin D's multifaceted roles.
• To specifically examine the implications of vitamin D in the context of chronic kidney disease (CKD) and kidney transplantation.

Main Methods:

• This study is a narrative review.
• It synthesizes existing literature on vitamin D's functions.

Main Results:

• Vitamin D is integral to bone metabolism by regulating calcium and phosphorus.
• Extra-bone effects include benefits for glucose control, cardiovascular protection, and anti-inflammatory/antiproliferative actions.
• The review highlights vitamin D's particular relevance in CKD and post-transplant settings.

Conclusions:

• Vitamin D possesses critical roles beyond bone health, influencing systemic functions.
• Understanding vitamin D's impact is vital for managing patients with chronic kidney disease and those who have undergone kidney transplants.