The Effect of High Dose Cholecalciferol on Arterial Stiffness and Peripheral and Central Blood Pressure in Healthy Humans: A Randomized Controlled Trial

Iain Bressendorff, Lisbet Brandi, Morten Schou, Birgitte Nygaard, Niels Erik Frandsen, Knud Rasmussen, Lars Ødum, Ove Vyff Østergaard, Ditte Hansen, Iain Bressendorff, Lisbet Brandi, Morten Schou, Birgitte Nygaard, Niels Erik Frandsen, Knud Rasmussen, Lars Ødum, Ove Vyff Østergaard, Ditte Hansen

Abstract

Background: Low levels of serum 25-hydroxy vitamin D are associated with increased arterial stiffness and hypertension. Supplementation with vitamin D precursors has been proposed as a treatment option for these conditions. We examined the effect of oral cholecalciferol on arterial stiffness and blood pressure in healthy normotensive adults.

Methods: 40 healthy adults were randomised in this double-blinded study to either oral cholecalciferol 3000 IU/day or matching placebo and were followed for 16 weeks to examine any effects on pulse wave velocity (PWV), augmentation index (AIx), peripheral and central blood pressure and 24-hour ambulatory blood pressure.

Results: 22 subjects in the cholecalciferol arm and 18 subjects in the placebo arm completed the 16 weeks of follow-up. There was no difference in changes in PWV, AIx corrected for heart rate or central or peripheral blood pressure between the two groups. There was no correlation between serum 25-hydroxy vitamin D and any of these parameters.

Conclusions: Oral cholecalciferol 3000 IU/day does not affect arterial stiffness or blood pressure after 16 weeks of treatment in healthy normotensive adults.

Trial registration: ClinicalTrials.gov NCT00952562.

Conflict of interest statement

Competing Interests: DH has received funding for other research projects from Abbott Laboratories A/S. D3 Pharmacy delivered the study medication. There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Figures

Fig 1. Treatment Effect on 25-OH Vitamin…
Fig 1. Treatment Effect on 25-OH Vitamin D Levels.
Fig 2. Treatment Effect on 1,25-(OH) 2…
Fig 2. Treatment Effect on 1,25-(OH)2 Vitamin D Levels.
Fig 3. Treatment Effect on Pulse Wave…
Fig 3. Treatment Effect on Pulse Wave Velocity.
Fig 4. Treatment Effect on Augmentation Index.
Fig 4. Treatment Effect on Augmentation Index.
Fig 5. Treatment Effect on 24-hour Ambulatory…
Fig 5. Treatment Effect on 24-hour Ambulatory Blood Pressure.

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