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Vitamin d effects on lung immunity and respiratory diseases.
MedLine Citation:
PMID:  21419273     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Our understanding of vitamin D metabolism and biological effects has grown exponentially in recent years and it has become clear that vitamin D has extensive immunomodulatory effects. The active vitamin D generating enzyme, 1α-hydroxylase, is expressed by the airway epithelium, alveolar macrophages, dendritic cells, and lymphocytes indicating that active vitamin D can be produced locally within the lungs. Vitamin D generated in tissues is responsible for many of the immunomodulatory actions of vitamin D. The effects of vitamin D within the lungs include increased secretion of the antimicrobial peptide cathelicidin, decreased chemokine production, inhibition of dendritic cell activation, and alteration of T-cell activation. These cellular effects are important for host responses against infection and the development of allergic lung diseases like asthma. Epidemiological studies do suggest that vitamin D deficiency predisposes to viral respiratory tract infections and mycobacterial infections and that vitamin D may play a role in the development and treatment of asthma. Randomized, placebo-controlled trials are lacking but ongoing.
Authors:
Sif Hansdottir; Martha M Monick
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Vitamins and hormones     Volume:  86     ISSN:  0083-6729     ISO Abbreviation:  Vitam. Horm.     Publication Date:  2011  
Date Detail:
Created Date:  2011-03-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0413601     Medline TA:  Vitam Horm     Country:  United States    
Other Details:
Languages:  eng     Pagination:  217-37     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Elsevier Inc. All rights reserved.
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