Respiratory syncytial virus binds and undergoes transcription in neutrophils from the blood and airways of infants with severe bronchiolitis

Clare P Halfhide, Brian F Flanagan, Stephen P Brearey, John A Hunt, Angela M Fonceca, Paul S McNamara, Deborah Howarth, Steven Edwards, Rosalind L Smyth

Research output: Contribution to journalArticlepeer-review

68 Citations (Scopus)

Abstract

BACKGROUND: Neutrophils are the predominant cell in the lung inflammatory infiltrate of infants with respiratory syncytial virus (RSV) bronchiolitis. Although it has previously been shown that neutrophils from both blood and bronchoalveolar lavage (BAL) are activated, little is understood about their role in response to RSV infection. This study investigated whether RSV proteins and mRNA are present in neutrophils from blood and BAL of infected infants.

METHODS: We obtained blood and BAL samples from 20 infants with severe RSV bronchiolitis and 8 healthy control infants. Neutrophil RSV F, G, and N proteins, RSV N genomic RNA, and messenger RNA (mRNA) were quantified.

RESULTS: RSV proteins were found in BAL and blood neutrophils in infants with RSV disease but not in neutrophils from healthy infants. BAL and blood neutrophils from infants with RSV disease, but not those from healthy infants, expressed RSV N genomic RNA, indicating uptake of whole virus; 17 of 20 BAL and 8 of 9 blood neutrophils from patients expressed RSV N mRNA.

CONCLUSIONS: This work shows, for the first time, the presence of RSV proteins and mRNA transcripts within BAL and blood neutrophils from infants with severe RSV bronchiolitis.

Original languageEnglish
Pages (from-to)451-8
Number of pages8
JournalThe Journal of infectious diseases
Volume204
Issue number3
DOIs
Publication statusPublished - 1 Aug 2011
Externally publishedYes

Fingerprint

Dive into the research topics of 'Respiratory syncytial virus binds and undergoes transcription in neutrophils from the blood and airways of infants with severe bronchiolitis'. Together they form a unique fingerprint.

Cite this