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Public Health Nutr. 2017 Jul;20(10):1825-1835. doi: 10.1017/S1368980016000409. Epub 2016 Apr 18.

Vitamin D status in mothers with pre-eclampsia and their infants: a case-control study from Serbia, a country without a vitamin D fortification policy.

Author information

1
1Centre of Research Excellence in Nutrition and Metabolism,Institute for Medical Research,University of Belgrade,Tadeusa Koscuska 1,11000 Belgrade,Serbia.
2
2School of Dietetics and Human Nutrition,McGill University,Macdonald Campus,Ste Anne-de-Bellevue,Québec,Canada.
3
3Department of Biomedical & Molecular Sciences,Queen's University,Kingston,Ontario,Canada.
4
4Harvard School of Dental Medicine,Boston,MA,USA.
5
5Faculty of Chemistry,University of Belgrade,Belgrade,Serbia.

Abstract

OBJECTIVE:

The objective of the present study was to determine if vitamin D intake and status are associated with pre-eclampsia in a country without a vitamin D fortification policy.

DESIGN:

A case-control study of pregnancies with (case) and without (control) pre-eclampsia was conducted from January to April when UVB is minimal. Maternal and cord blood obtained at delivery were measured for plasma 25-hydroxycholecalciferol (25-OH-D3), 3-epimer of 25-OH-D3 (3-epi-25-OH-D3) and 24,25-dihydroxycholecalciferol (24,25-(OH)2D3) by LC-MS/MS and maternal 1,25-dihydroxyvitamin D (1,25-(OH)2D). Differences between groups were tested with ANOVA and Bonferroni post hoc tests (P<0·05).

SETTING:

Clinical Center of Serbia.

SUBJECTS:

Pregnant women with and without pre-eclampsia (n 60) and their infants.

RESULTS:

Exogenous vitamin D intake (0·95-16·25 µg/d (38-650 IU/d)) was not significantly different between groups. Women with pre-eclampsia delivered infants at an earlier gestational age and had significantly lower mean total plasma 25-hydroxyvitamin D (25-OH-D; case: 11·2 (sd 5·1); control: 16·1 (sd 5·7) ng/ml; P=0·0006), 25-OH-D3 (case: 10·0 (sd 4·9); control: 14·2 (sd 5·8) ng/ml; P=0·002), 3-epi-25-OH-D3 (case: 0·5 (sd 0·2); control: 0·7 (sd 0·2) ng/ml; P=0·0007) and 1,25-(OH)2D (case: 56·5 (sd 26·6); control: 81·0 (sd 25·7) pg/ml; P=0·018), while 24,25-(OH)2D3 was not different between groups. Infants did not differ in total plasma 25-OH-D, 25-OH-D3, 3-epi-25-OH-D3 and 24,25-(OH)2D3, but the mean proportion of 3-epi-25-OH-D3 was higher in the infant case group (case: 7·9 (sd 1·1); control: 7·0 (sd 1·4) % of total 25-OH-D3; P=0·005).

CONCLUSIONS:

A high prevalence of vitamin D deficiency, as defined by plasma 25-OH-D<12 ng/ml, was observed in 47 % of all mothers and 77 % of all infants. These data underscore the need for prenatal vitamin D supplementation and a food fortification policy in Serbia.

KEYWORDS:

C3-epi-25-hydroxycholecalciferol; LC–MS/MS; Maternal and cord blood; Pre-clampsia; Pregnancy; Vitamin D status

PMID:
27087002
DOI:
10.1017/S1368980016000409
[Indexed for MEDLINE]

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