Vitamin D insufficient levels during pregnancy and micronuclei frequency in peripheral blood T lymphocytes mothers and newborns (Rhea cohort, Crete). Issue 4 (August 2017)

• Record Type: Journal Article
• Authors: O'Callaghan-Gordo, Cristina; Kogevinas, Manolis; Fthenou, Eleni; Pedersen, Marie; Espinosa, Ana; Chalkiadaki, Georgia; Daraki, Vasiliki; Dermitzaki, Eirini; Decordier, Ilse; Georgiou, Vaggelis; Merlo, Domenico Franco; Roumeliotaki, Theano; Vande Loock, Kim; Kleinjans, Jos; Kirsch-Volders, Micheline; Chatzi, Leda
• Is Part Of: Clinical nutrition. Volume 36:Issue 4(2017:Aug.)
• Page Start: 1029
• Page End: 1035
• Publication Date: 2017-08
• Subjects: Vitamin D -- Micronuclei -- Genotoxicity -- Childhood cancer -- In utero exposures -- Mother–child cohort; CBMN cytokinesis-block micronucleus assay -- CLIA chemiluminescent immunoassay test -- DAGs directed acyclic diagrams -- IRR incidence rate ratio -- LOD limits of detection -- MN micronuclei -- MNBN micronucleated binucleated T lymphocytes -- 25(OH)D 25-hydroxyvitamin D; Critically ill -- Nutrition -- Periodicals; Diet therapy -- Periodicals; Parenteral feeding -- Periodicals; Enteral feeding -- Periodicals; Enteral Nutrition -- Periodicals; Parenteral Nutrition -- Periodicals; Metabolism -- Periodicals; Diétothérapie -- Périodiques; Alimentation parentérale -- Périodiques; Alimentation entérale -- Périodiques; Nutrition -- Périodiques; Diet therapy; Enteral feeding; Nutrition; Parenteral feeding; Electronic journals; Periodicals; Electronic journals; 615.854
• DOI: 10.1016/j.clnu.2016.06.016
• Languages: English
• ISSNs: 0261-5614

Abstract

Summary: Background & aims: Vitamin D deficiency is common among pregnant women and may be associated with several adverse health outcomes including cancer. Micronuclei frequency is a biomarker of early genetic effects and has been used to examine the association between genotoxic exposures and cancer. We examined maternal vitamin D levels during pregnancy in associations with micronuclei frequency in maternal blood and in cord blood. Methods: 173 mothers and 171 newborns born between 2007 and 2008 in Heraklion (Crete, Greece) were included in the study. Between 14th and 18th weeks of gestation we collected information on maternal diet using food frequency questionnaires (FFQs). We measured maternal serum concentrations of 25-hydroxyvitamin D [25(OH)D] between the first and second trimester of pregnancy. We estimated dietary vitamin D intake using information from FFQ. After delivery we collected cord blood and maternal peripheral blood. We used the cytokinesis-block micronucleus (CBMN) assay to assess the frequencies of micronucleated cells in binucleated T lymphocytes (MNBN). Results: Maternal insufficient serum levels of 25(OH)D (<50 nmol/L) during pregnancy were associated with increased MNBN frequency in cord blood [IRR = 1.32 (95%CI: 1.00, 1.72)]. This increase was higher for newborns with birth weight above the third quartile [≥3.500 kg; IRR = 2.21 (1.26, 3.89)]. Similarly, low levels of dietary vitamin D were associated with increased MNBN frequency in cord blood [middle tertile IRR = 1.08 (0.78, 1.47), lower tertile IRR = 1.51 (1.06, 2.14)]. Insufficient levels of vitamin D were not associated with MNBN in mothers. Conclusion: Our results suggest that vitamin D deficiency during pregnancy increases genotoxic risks in newborns. The prevalence of vitamin D deficiency globally is high and it is important to further investigate whether vitamin D supplementation or similar interventions during pregnancy could prevent DNA damage at early stages of life.