Vitamin D receptor agonists inhibit pro-inflammatory cytokine production from the respiratory epithelium in cystic fibrosis.
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Authors
McNally, PCoughlan, C
Bergsson, G
Doyle, M
Taggart, C
Adorini, L
Uskokovic, M R
El-Nazir, B
Murphy, P
Greally, P
Greene, C M
McElvaney, N G
Affiliation
Department of Paediatric Respiratory Medicine, Adelaide and Meath Hospital incorporating the National Children's Hospital, Dublin 24, Ireland; Respiratory Research Division, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin 9, Ireland.Issue Date
2011-07-22
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Vitamin D receptor agonists inhibit pro-inflammatory cytokine production from the respiratory epithelium in cystic fibrosis. 2011:notJ Cyst FibrosJournal
Journal of cystic fibrosis : official journal of the European Cystic Fibrosis SocietyDOI
10.1016/j.jcf.2011.06.013PubMed ID
21784717Additional Links
http://www.ncbi.nlm.nih.gov/pubmed/21784717Abstract
BACKGROUND: 1,25-Dihydroxycholecalciferol (1,25(OH)(2)D(3)) has been shown to mitigate epithelial inflammatory responses after antigen exposure. Patients with cystic fibrosis (CF) are at particular risk for vitamin D deficiency. This may contribute to the exaggerated inflammatory response to pulmonary infection in CF. METHODS: CF respiratory epithelial cell lines were exposed to Pseudomonas aeruginosa lipopolysaccharide (LPS) and Pseudomonas conditioned medium (PCM) in the presence or absence of 1,25(OH)(2)D(3) or a range of vitamin D receptor (VDR) agonists. Levels of IL-6 and IL-8 were measured in cell supernatants, and cellular total and phosphorylated IκBα were determined. Levels of human cathelicidin antimicrobial peptide (hCAP18) mRNA and protein were measured in cells after treatment with 1,25(OH)(2)D(3). RESULTS: Pretreatment with 1,25(OH)(2)D(3) was associated with significant reductions in IL-6 and IL-8 protein secretion after antigen exposure, a finding reproduced with a range of low calcaemic VDR agonists. 1,25(OH)(2)D(3) treatment led to a decrease in IκBα phosphorylation and increased total cellular IκBα. Treatment with 1,25(OH)(2)D(3) was associated with an increase in hCAP18/LL-37 mRNA and protein levels. CONCLUSIONS: Both 1,25(OH)(2)D(3) and other VDR agonists significantly reduce the pro-inflammatory response to antigen challenge in CF airway epithelial cells. VDR agonists have significant therapeutic potential in CF.Item Type
ArticleLanguage
enISSN
1873-5010ae974a485f413a2113503eed53cd6c53
10.1016/j.jcf.2011.06.013
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