Vitamin D deficiency and pre-eclampsia in Colombia: PREVitD study

Area of Science:

• Obstetrics and Gynecology
• Endocrinology
• Nutritional Science

Background:

• Pre-eclampsia is a significant cause of maternal mortality, particularly in low-income settings.
• Vitamin D plays a crucial role in various physiological processes, including cardiovascular health.
• The potential link between vitamin D status and pre-eclampsia requires further investigation.

Purpose of the Study:

• To investigate the association between maternal vitamin D levels and the occurrence of pre-eclampsia.
• To determine if vitamin D deficiency is a risk factor for developing pre-eclampsia during pregnancy.

Main Methods:

• A multicenter case-control study involving 1013 women with pre-eclampsia and 1015 controls.
• Recruitment from the Genetics and Pre-eclampsia (GenPE) Colombian registry across eight cities.
• Quantification of 25-hydroxyvitamin D (25(OH)D) levels using liquid-chromatography-tandem mass spectrometry.

Main Results:

• Vitamin D deficiency (25(OH)D < 30 ng/mL) was observed in 52% of women with pre-eclampsia.
• Mean 25(OH)D concentrations were significantly lower in the pre-eclampsia group (29.99 ng/mL) compared to controls (33.7 ng/mL).
• Maternal vitamin D deficiency was associated with a more than twofold increased probability of pre-eclampsia (OR 2.18; 95% CI, 1.80-2.64) after adjusting for covariates.

Conclusions:

• Low maternal 25-hydroxyvitamin D concentrations appear to be associated with an increased risk of pre-eclampsia.
• While the association is significant, a definitive causal relationship requires further confirmation.
• Future powered clinical trials are necessary to establish causality between vitamin D levels and pre-eclampsia risk.