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Peripheral blood eosinophil counts and eosinophil cationic protein content of respiratory secretions in bronchiolitis: relationship to severity of disease

Peripheral blood eosinophil counts and eosinophil cationic protein content of respiratory... Infants and young children with acute viral respiratory illness were studied to determine the association of peripheral blood eosinophil counts and concentrations of eosinophil cationic protein (ECP) in nasopharyngeal secretions with the development and severity of bronchiolitis. Subjects included those with upper respiratory illness (URI) alone, pneumonia or bronchiolitis. Controls consisted of healthy infants, and those hospitalized with non‐respiratory illnesses. While peripheral blood eosinophil counts were suppressed in all infected infants greater than two months of age, eosinophil counts in patients with bronchiolitis were significantly greater than in those with URI alone. ECP concentrations were significantly greater among individuals with bronchiolitis than other infected infants. For bronchiolitis cases with detectable peripheral blood eosinophils, eosinophil counts correlated weakly and inversely with oxygen saturations. In contrast, ECP concentrations were strongly inversely correlated with initial oxygen saturation. ECP concentrations were also significantly correlated with peripheral blood eosinophil counts. Viral infections suppress peripheral blood eosinophil counts in infants greater than two months of age, although the effect is somewhat overcome in patients with bronchiolitis. The form and severity of bronchiolitis is much more strongly related to degranulation of eosinophils in the respiratory tract than to peripheral blood eosinophil counts. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Pediatric Allergy and Immunology Wiley

Peripheral blood eosinophil counts and eosinophil cationic protein content of respiratory secretions in bronchiolitis: relationship to severity of disease

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References (32)

Publisher
Wiley
Copyright
Copyright © 1994 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0905-6157
eISSN
1399-3038
DOI
10.1111/j.1399-3038.1994.tb00227.x
Publisher site
See Article on Publisher Site

Abstract

Infants and young children with acute viral respiratory illness were studied to determine the association of peripheral blood eosinophil counts and concentrations of eosinophil cationic protein (ECP) in nasopharyngeal secretions with the development and severity of bronchiolitis. Subjects included those with upper respiratory illness (URI) alone, pneumonia or bronchiolitis. Controls consisted of healthy infants, and those hospitalized with non‐respiratory illnesses. While peripheral blood eosinophil counts were suppressed in all infected infants greater than two months of age, eosinophil counts in patients with bronchiolitis were significantly greater than in those with URI alone. ECP concentrations were significantly greater among individuals with bronchiolitis than other infected infants. For bronchiolitis cases with detectable peripheral blood eosinophils, eosinophil counts correlated weakly and inversely with oxygen saturations. In contrast, ECP concentrations were strongly inversely correlated with initial oxygen saturation. ECP concentrations were also significantly correlated with peripheral blood eosinophil counts. Viral infections suppress peripheral blood eosinophil counts in infants greater than two months of age, although the effect is somewhat overcome in patients with bronchiolitis. The form and severity of bronchiolitis is much more strongly related to degranulation of eosinophils in the respiratory tract than to peripheral blood eosinophil counts.

Journal

Pediatric Allergy and Immunology – Wiley

Published: May 1, 1994

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