Journal
ALLERGY
Volume 71, Issue 12, Pages 1728-1735Publisher
WILEY
DOI: 10.1111/all.12991
Keywords
preschool children; recombinant VP1 protein; rhinovirus; rhinovirus-specific IgG(1); wheeze
Categories
Funding
- Swedish Research Council
- Swedish Heart-Lung Foundation
- Freemason Child House Foundation in Stockholm
- Konsul Th. C. Bergh's Foundation
- Centre for Allergy Research at Karolinska Institutet
- Samaritan Foundation
- Sigurd and Elsa Goljes Memorial Fund
- Crown Princess Lovisas Association for Childcare/Axel Tielmans Memorial Fund
- Stockholm County Council (ALF)
- Swedish Asthma and Allergy Association's Research Foundation
- SFO Epidemiology Program at KI
- European Commission [260895]
- Biomay AG
- Viravaxx GmbH, Vienna, Austria
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BackgroundSome children with rhinovirus (RV) infections wheeze, but it is unknown whether this is due to more virulent strains of virus or differences in host immune responses. The aim of this study was to investigate the RV species-specific antibody responses measured at a follow-up visit in preschool children in relation to reported time with respiratory symptoms and the presence of different RV species during an acute episode of wheeze. MethodNasopharyngeal swabs and blood samples were taken among 120 preschool children (<4 years of age) at an acute episode of wheeze and at a follow-up visit (median 11 weeks later). Nested PCR was used to detect different RV strains, and serum levels of IgG(1) against purified recombinant VP1 proteins from representatives of the three RV species (RV-A, RV-B, and RV-C) were measured by ELISA. ResultsRhinovirus was detected in 74% (n = 80/108) of the children at the acute visit, and RV-C was the most common subtype (n = 59/80, 74%). An increase in RV-specific IgG(1) was seen in 61% (n = 73) of the children at follow-up, most frequently against RV-A (n = 61/73, 86%) irrespective of the RV strains detected by PCR. Increases in RV-specific IgG(1) against RV-A or against RV-A and RV-C were significantly associated with more respiratory symptoms (p = 0.03, p = 0.007). ConclusionAntibody response to recombinant RV VP1 proteins was associated with longer time with respiratory symptoms.
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