title: Transient neutrophil infiltration after allergen challenge is dependent on specific antibodies and Fc gamma III receptors.
abstract: Following allergen challenge of sensitized mice, neutrophils are the first inflammatory cells found in bronchoalveolar lavage (BAL) fluid. To determine the underlying mechanism for their accumulation, mice were sensitized to OVA on days 0 and 14, and received, on day 28, a single intranasal challenge (s.i.n.) with either OVA or ragweed. Eight hours after the s.i.n., BAL fluid was obtained. BALB/c mice sensitized and challenged with OVA showed significantly higher total cell counts and numbers of neutrophils in BAL fluid compared to the OVA-sensitized and ragweed-challenged or nonsensitized mice. Levels of neutrophil chemokines in BAL fluid supernatants were markedly elevated in the sensitized and OVA-challenged mice; Fc epsilon RI-deficient mice showed comparable numbers of neutrophils and neutrophil chemokines in BAL fluid after s.i.n. But in sensitized mice lacking the Fc common gamma-chain and B cell-deficient mice, the number of neutrophils and levels of neutrophil chemokines in BAL fluid were significantly lower. Further, mice lacking the FcgammaRIII did not develop this early neutrophil influx. Neutrophil infiltration could be induced in naive mice following intranasal instillation of allergen combined with allergen-specific IgG1. In addition, macrophages from sensitized mice were stimulated with allergen and activated to produce neutrophil chemokines. These results demonstrate that neutrophil influx after allergen challenge requires prior sensitization, is allergen-specific, is mediated through FcgammaRIII, and is dependent on the presence of Ab.
authors.affiliation: Division of Cell Biology, Department of Pediatrics, National Jewish Medical and Research Center, Denver, CO 80206, USA.
authors.forename: Christian
authors.initials: C
authors.lastname: Taube
authors.forename: Azzeddine
authors.initials: A
authors.lastname: Dakhama
authors.forename: Yeong-Ho
authors.initials: YH
authors.lastname: Rha
authors.forename: Katsuyuki
authors.initials: K
authors.lastname: Takeda
authors.forename: Anthony
authors.initials: A
authors.lastname: Joetham
authors.forename: Jung-Won
authors.initials: JW
authors.lastname: Park
authors.forename: Annette
authors.initials: A
authors.lastname: Balhorn
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Takai
authors.forename: Katie R
authors.initials: KR
authors.lastname: Poch
authors.forename: Jerry A
authors.initials: JA
authors.lastname: Nick
authors.forename: Erwin W
authors.initials: EW
authors.lastname: Gelfand
mesh_terms: D000281:Administration, Intranasal; D000361:Agammaglobulinemia / Q000235:genetics / Q000276:immunology / Q000473:pathology; D000485:Allergens / Q000008:administration & dosage* / Q000276:immunology*; D031164:Ambrosia / Q000276:immunology; D000818:Animals; D000918:Antibody Specificity / Q000235:genetics; D001402:B-Lymphocytes / Q000276:immunology / Q000473:pathology; D001992:Bronchoalveolar Lavage Fluid / Q000166:cytology / Q000276:immunology; D002478:Cells, Cultured; D018925:Chemokines / Q000097:blood / Q000378:metabolism; D000939:Epitopes / Q000276:immunology; D005260:Female; D007114:Immunization; D007073:Immunoglobulin E / Q000502:physiology*; D007074:Immunoglobulin G / Q000378:metabolism / Q000502:physiology*; D008231:Lymphopenia / Q000235:genetics / Q000276:immunology / Q000473:pathology; D016676:Macrophages, Alveolar / Q000276:immunology / Q000378:metabolism; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D018345:Mice, Knockout; D020556:Neutrophil Infiltration / Q000235:genetics / Q000276:immunology*; D009504:Neutrophils / Q000276:immunology / Q000378:metabolism; D010047:Ovalbumin / Q000008:administration & dosage / Q000276:immunology; D017452:Receptors, IgG / Q000172:deficiency / Q000235:genetics / Q000502:physiology*
chemical_list: D000485:Allergens; D018925:Chemokines; D000939:Epitopes; D007074:Immunoglobulin G; D017452:Receptors, IgG; D007073:Immunoglobulin E; D010047:Ovalbumin