Recurrence of Wheezing Episodes in Children with Respiratory Syncytial Virus and Non-Respiratory Syncytial Virus Bronchiolitis


KARAMAN Ö., Gunes B. T., Erbayraktar Z., Ayyildiz Z. A., Hocaolu A. B., Olmez D., ...More

TURKIYE KLINIKLERI TIP BILIMLERI DERGISI, vol.31, no.6, pp.1507-1513, 2011 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 31 Issue: 6
  • Publication Date: 2011
  • Doi Number: 10.5336/medsci.2011-22557
  • Journal Name: TURKIYE KLINIKLERI TIP BILIMLERI DERGISI
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1507-1513
  • Keywords: Asthma, bronchiolitis, CHILDHOOD ASTHMA, AIRWAY HYPERRESPONSIVENESS, RSV BRONCHIOLITIS, VIRAL-INFECTIONS, YOUNG-CHILDREN, EARLY-LIFE, FOLLOW-UP, INFANCY, AGE, SENSITIZATION
  • Dokuz Eylül University Affiliated: Yes

Abstract

Objective: It has been shown that many children who experience respiratory syncytial virus (RSV) infection in infancy develop recurrent wheezing episodes and asthma later. Viral role in pathogenesis of asthma is still a debate. We aimed to investigate the recurrence of wheezing episodes, atopy and serum cytokine levels in children encountered with RSV infection. Additionally, we aimed to compare these parameters in children with non-RSV bronchiolitis. Material and Methods: The study was conducted between January 2006 and November 2008 in Dokuz Eylul University hospital. Seventy children aged between 0-36 months who were diagnosed with acute bronchiolitis for the first time were recruited for the study. Nasopharyngeal lavage fluid was analyzed with polymerase chain reaction (PCR) for RSV antigen in all patients. Serum immunoglobulin E, total eosinophil count, interleukin (IL)-4, IL-13 and gamma-interferon (IFN-gamma) levels were obtained at the last examination of the patients after a follow up period of 1-3 years. Results: Recurrence of a wheezing episode was observed in 35% and 53.3% of the patients in RSV group and non-RSV group, respectively (p=0.064). Mean serum IFN-gamma and IL-4 levels were detected to be significantly higher in non-RSV group. No significant relation was detected between recurrence of wheezing episodes and total eosinophil count, serum IgE, IL-4, IL-13, and IFN-gamma levels. Conclusion: No difference could be detected between RSV and non-RSV bronchiolitis regarding subsequent wheezing episodes. Although serum IL-4 and IFN-gamma levels were higher in non-RSV bronchiolitis group, no significant correlation was observed between these parameters and recurrence of wheezing episodes.