Vitamin D receptor agonists inhibit pro-inflammatory cytokine production from the respiratory epithelium in cystic fibrosis
| Autor: | Noel G. McElvaney, L. Adorini, Catherine A. Coughlan, M.R. Uskokovic, Catherine M. Greene, Clifford C. Taggart, Paul McNally, Philip Murphy, M. Doyle, Gudmundur Bergsson, Peter Greally, Basil Elnazir |
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| Jazyk: | angličtina |
| Předmět: |
Pulmonary and Respiratory Medicine
medicine.medical_specialty Lipopolysaccharide Respiratory Mucosa Calcitriol receptor vitamin D deficiency Cystic fibrosis chemistry.chemical_compound Calcitriol Internal medicine Vitamin D and neurology Medicine Humans Pediatrics Perinatology and Child Health Vitamin D Receptor Children Cells Cultured Cholecalciferol Inflammation business.industry Interleukin-6 Interleukin-8 Epithelial Cells Vitamins medicine.disease IκBα Endocrinology P. aeruginosa chemistry Pediatrics Perinatology and Child Health Respiratory epithelium Receptors Calcitriol Vitamin d receptor agonist business |
| Zdroj: | Journal of Cystic Fibrosis. (6):428-434 |
| ISSN: | 1569-1993 |
| DOI: | 10.1016/j.jcf.2011.06.013 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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