Viral infection in acute exacerbation of idiopathic pulmonary fibrosis

American Journal of Respiratory and Critical Care Medicine
Sharon Chao WoottonHarold R Collard

Abstract

Idiopathic pulmonary fibrosis is a progressive, uniformly fatal interstitial lung disease. An acute exacerbation of idiopathic pulmonary fibrosis is an episode of acute respiratory worsening without an identifiable etiology. Occult viral infection has been proposed as a possible cause of acute exacerbation. To use unbiased genomics-based discovery methods to define the role of viruses in acute exacerbation of idiopathic pulmonary fibrosis. Bronchoalveolar lavage and serum from patients with acute exacerbation of idiopathic pulmonary fibrosis, stable disease, and acute lung injury were tested for viral nucleic acid using multiplex polymerase chain reaction, pan-viral microarray, and high-throughput cDNA sequencing. Four of forty-three patients with acute exacerbation of idiopathic pulmonary fibrosis had evidence of common respiratory viral infection (parainfluenza [n = 1], rhinovirus [n = 2], coronavirus [n = 1]); no viruses were detected in the bronchoalveolar lavage from stable patients. Pan-viral microarrays revealed additional evidence of viral infection (herpes simplex virus [n = 1], Epstein-Barr virus [n = 2], and torque teno virus [TTV] [n = 12]) in patients with acute exacerbation. TTV infection was significantly more co...Continue Reading

Associated Datasets

Mar 3, 2011
Feb 28, 2011

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