Vitamin D and Parathyroid Hormone in the Umbilical Cord Blood - Correlation with Light and Dark Maternal Skin Color

Overview

Journal Food Sci Nutr

Specialty Biotechnology

Date 2022 Dec 14

PMID 36514767

Authors

Klara Wille

Aline Richard

Alexandra Nieters

Sabine Rohrmann

Katharina Quack Lotscher

Affiliations

Soon will be listed here.

Abstract

During pregnancy, vitamin D deficiency is associated with negative health consequences for mother and child. Furthermore, dark skin color is associated with lower vitamin D levels. We investigated 25-hydroxy-vitamin D (25(OH)D) and parathyroid hormone (PTH) levels in mothers and in cord blood of their newborns depending on maternal skin color. We recruited 202 mother and child pairs at the University Hospital Zurich and measured 25(OH)D and PTH concentrations in maternal and postpartum umbilical cord blood. Skin type was self-reported based on the Fitzpatrick Scale (type I to V). Uni- and multivariate methods were used to compare the maternal and neonatal 25(OH)D and PTH levels by skin type (light: I-III vs. dark: IV-V). As many as 54.5% of all mothers and 41.1% of the neonates were 25(OH)D deficient. This was higher in the neonates of dark-skinned (55.9%) than in the neonates of light-skinned mothers (38.1%; = .06). The correlation of 25(OH)D in the maternal with umbilical cord blood was high (light: r = 0.85, dark: r = 0.87), with higher concentrations of 25(OH) vitamin D in the umbilical cord than in maternal blood. Regression analysis revealed that country of origin and maternal 25(OH)D concentration were the only statistically significant determinants for umbilical cord blood 25(OH)D. We observed no correlation of maternal with umbilical cord PTH concentrations; median PTH concentrations in the umbilical cord (5.6 pg/ml) were significantly lower than in maternal blood (25.7 pg/ml). The recommendation of vitamin D supplementation in newborns in their first 3 years of life should be particularly emphasized to dark-skinned mothers.

Citing Articles

Vitamin D and parathyroid hormone in the umbilical cord blood - Correlation with light and dark maternal skin color.

Wille K, Richard A, Nieters A, Rohrmann S, Quack Lotscher K Food Sci Nutr. 2022; 10(12):4201-4208.

PMID: 36514767 PMC: 9731526. DOI: 10.1002/fsn3.3013.

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