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Erschienen in: Lung 6/2016

10.09.2016

Inhaled Vitamin D: A Novel Strategy to Enhance Neonatal Lung Maturation

verfasst von: Sneha K. Taylor, Reiko Sakurai, Tokusho Sakurai, Virender K. Rehan

Erschienen in: Lung | Ausgabe 6/2016

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Abstract

Introduction

The physiologic vitamin D (VD), 1α,25(OH)2D3 (1,25D) is a local paracrine/autocrine effecter of fetal lung maturation. By stimulating alveolar type II cell and lipofibroblast proliferation and differentiation, parenterally administered 1,25D has been shown to enhance neonatal lung maturation; but due to the potential systemic side effects of the parenteral route, the translational value of these findings might be limited. To minimize the possibility of systemic toxicity, we examined the effects of VD on neonatal lung maturation, when delivered directly to lungs via nebulization.

Methods

One-day-old rat pups were administered three different doses of 1,25D and its physiologic precursor 25(OH)D (25D), or the diluent, via nebulization daily for 14 days. Pups were sacrificed for lung, kidneys, and blood collection to determine markers of lung maturation, and serum 25D and calcium levels.

Results

Compared to controls, nebulized 25D and 1,25D enhanced lung maturation as evidenced by the increased expression of markers of alveolar epithelial (SP-B, leptin receptor), mesenchymal (PPARγ, C/EBPα), and endothelial (VEGF, FLK-1) differentiation, surfactant phospholipid synthesis, and lung morphology without any significant increases in serum 25D and calcium levels.

Conclusions

Inhaled VD is a potentially safe and effective novel strategy to enhance neonatal lung maturation.
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Metadaten
Titel
Inhaled Vitamin D: A Novel Strategy to Enhance Neonatal Lung Maturation
verfasst von
Sneha K. Taylor
Reiko Sakurai
Tokusho Sakurai
Virender K. Rehan
Publikationsdatum
10.09.2016
Verlag
Springer US
Erschienen in
Lung / Ausgabe 6/2016
Print ISSN: 0341-2040
Elektronische ISSN: 1432-1750
DOI
https://doi.org/10.1007/s00408-016-9939-3

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