Journal
PAEDIATRIC RESPIRATORY REVIEWS
Volume 9, Issue 4, Pages 243-250Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.prrv.2008.04.001
Keywords
respiratory viral infection; innate immune response; rhinovirus; influenza; Toll-like receptor; type I interferon
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Viral respiratory tract infections are the most common infectious illnesses, though they are usually self limiting and confined to the respiratory tract. The rapid identification of viruses and their effective elimination with minimal local and systemic inflammation is a testament to the efficiency of the innate immune response within the airways and lungs. A failure of this response appears to occur in those with asthma and chronic obstructive pulmonary disease, where viral infection is an important trigger for acute exacerbations. The innate immune response to viruses requires their early detection through pathogen recognition receptors and the recruitment of the efficient antiviral response that is centred around the release of type I interferons. The air-way epithelium provides both a banner and an early detector for viruses, and interacts closely with cells of the innate immune response, especially macrophages and dendritic cells, to eliminate infection and trigger a specific adaptive immune response. (C) 2008 Elsevier Ltd. All rights reserved.
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