title: Allergen challenge-induced acute exudation of IL-8, ECP and alpha2-macroglobulin in human rhinovirus-induced common colds.
abstract: Rhinovirus infections cause exacerbations of eosinophilic airway disease. The acute effects of allergen-challenge on nasal interleukin-8 (IL-8), eosinophil cationic protein (ECP), and alpha2-macroglobulin were examined in atopic subjects with common cold symptoms. Twenty-three patients with seasonal allergic rhinitis were inoculated with human rhinovirus 16 outside the pollen season. Diluent and allergen challenges, followed by nasal lavages, were carried out about 3 months before and 4 days after virus inoculation. Seventeen patients developed significant common cold symptoms with increased nasal lavage fluid levels of alpha2-macroglobulin, IL-8, and ECP at baseline (p<0.001-0.05 versus before inoculation), and were further increased by allergen challenge (p< 0.001-0.05); IL-8 and ECP levels were correlated (r = 0.63, p<0.001). Before inoculation, the six patients who later did not develop common cold symptoms had high levels of IL-8 and myeloperoxidase (MPO), and exhibited strong allergen-induced plasma exudation responses (alpha2-macroglobulin). After inoculation, IL-8 and ECP did not increase in these symptomless subjects. In conclusion, high nasal interleukin-8 and myeloperoxidase levels and exudative hyperresponsiveness may protect against infection. The association between nasal interleukin-8 and eosinophil cationic protein in common cold, particularly that observed in nasal lavage fluids after allergen-induced acute exudation of plasma, suggests the involvement of interleukin-8 in exacerbation of airway mucosal eosinophil activity.
authors.affiliation: Dept of Otorhinolaryngology, Head and Neck Surgery, University Hospital, Lund, Sweden.
authors.forename: L
authors.initials: L
authors.lastname: Greiff
authors.forename: M
authors.initials: M
authors.lastname: Andersson
authors.forename: C
authors.initials: C
authors.lastname: Svensson
authors.forename: M
authors.initials: M
authors.lastname: Linden
authors.forename: S
authors.initials: S
authors.lastname: Myint
authors.forename: C G
authors.initials: CG
authors.lastname: Persson
mesh_terms: D000293:Adolescent; D000328:Adult; D000485:Allergens / Q000008:administration & dosage / Q000276:immunology*; D001798:Blood Proteins / Q000096:biosynthesis*; D003139:Common Cold / Q000276:immunology* / Q000821:virology; D047091:Eosinophil Granule Proteins; D005260:Female; D006801:Humans; D018836:Inflammation Mediators / Q000276:immunology*; D016209:Interleukin-8 / Q000096:biosynthesis*; D008297:Male; D008875:Middle Aged; D012229:Rhinovirus; D012260:Ribonucleases; D000511:alpha-Macroglobulins / Q000096:biosynthesis*
chemical_list: D000485:Allergens; D001798:Blood Proteins; D047091:Eosinophil Granule Proteins; D018836:Inflammation Mediators; D016209:Interleukin-8; D000511:alpha-Macroglobulins; D012260:Ribonucleases