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Pregnant women need at least 40 ng of Vitamin D (Wagner, genes) – Oct 2017

A version of this was presented at 19th Vitamin D Workshop March 2016
J Steroid Biochem Mol Biol. 2017 Oct;173:273-279. doi: 10.1016/j.jsbmb.2017.02.003. Epub 2017 Feb 13.
Schulz EV 1, Cruze L 2, Wei W 3, Gehris J 4, Wagner CL 5.
1 Dept of Pediatrics, 169 Ashley Avenue, Charleston, SC, 29425, USA. eschulz033107 at gmail.com.
2 OB/GYN, 169 Ashley Avenue, Charleston, SC, 29425, USA.
3 Public Health Sciences, 169 Ashley Avenue, Charleston, SC, 29425, USA.
4 Comparative Medicine Medical U. of South Carolina, 169 Ashley Avenue, Charleston, SC, 29425, USA.
5 Departments of Pediatrics, 169 Ashley Avenue, Charleston, SC, 29425, USA.

VitaminDWiki

Healthy pregnancies need lots of vitamin D has the following summary

Problem
ReducesProof
1. Miscarriage 2.5 times Observe
2. Pre-eclampsia 3.6 timesRCT*
3. Gestational Diabetes 3 times RCT*
4. Good 2nd trimester sleep quality 3.5 times Observe
5. Premature birth 2 times RCT*
6. C-section - unplanned 1.6 timesObserve
7. Depression AFTER pregnancy 1.4 times RCT*
8. Small for Gestational Age 1.6 times meta-analysis
9. Infant height, weight, head size
     within normal limits
RCT*
10. Childhood Wheezing 1.3 times RCT*
11. Additional child is Autistic 4 times Intervention
12.Young adult Multiple Sclerosis 1.9 timesObserve
13. Preeclampsia in young adult 3.5 timesRCT*
14. Good motor skills @ age 31.4 times Observe
15. Childhood Mite allergy 5 times RCT*
16. Childhood Respiratory Tract visits 2.5 times RCT*


PDF attached was created Nov 8, 2017 by VitaminDWiki – the PDF download function was not working at the publisher’s site
 Download the PDF from VitaminDWiki

INTRODUCTION:
Maternal circulating 25-hydroxyvitamin D [25(OH)D] has been shown to optimize production of 1,25-dihydroxyvitamin D [1,25(OH)2D] during pregnancy at approximately 100nmoles/L, which has pronounced effects on fetal health outcomes. Additionally, associations are noted between low maternal 25(OH)D concentrations and vascular pregnancy complications, such as preeclampsia. To further elucidate the effects of vitamin D activity in pregnancy, we investigated the role of maternal 25(OH)D, the nutritional indicator of vitamin D status, in relation to placental maintenance and, specifically, expression of placental gene targets related to angiogenesis and vitamin D metabolism.

METHODS:
A focused analysis of placental mRNA expression related to angiogenesis, pregnancy maintenance, and vitamin D metabolism was conducted in placentas from 43 subjects enrolled in a randomized controlled trial supplementing 400IU or 4400IU of vitamin D3 per day during pregnancy. Placental mRNA was isolated from biopsies within one hour of delivery, followed by quantitative PCR. We classified pregnant women with circulating concentrations of <100nmoles/L as deficient and those with ≥100nmoles/L as sufficient. The value of each gene's change in the PCR cycle threshold (ΔCT), which is a relative measure of target concentration, was compared with maternal 25(OH)D concentrations <100nmoles/L and ≥100nmoles/L based on a two-sample Wilcoxon test.

RESULTS:
Soluble FMS-like tyrosine kinase 1 (sFlt-1) and vascular endothelial growth factor (VEGF) gene expression was significantly downregulated in the maternal subgroup with circulating 25(OH)D ≥100ng/mL compared to the subgroup <100ng/mL.

DISCUSSION:
Here, we report a significant association between maternal vitamin D status and the expression of sFlt-1 and VEGF at the mRNA level. Achieving maternal circulating 25(OH)D ≥100nmoles/L suggests the impact of maternal vitamin D3 supplementation on gene transcription in the placenta, thereby potentially decreasing antiangiogenic factors that may contribute to vascular pregnancy complications.

PMID: 28216083 DOI: 10.1016/j.jsbmb.2017.02.003

Created by admin. Last Modification: Wednesday November 8, 2017 12:17:39 UTC by admin. (Version 2)

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