PMID- 8976189 OWN - NLM STAT- MEDLINE DCOM- 19970130 LR - 20190508 IS - 0022-1007 (Print) IS - 1540-9538 (Electronic) IS - 0022-1007 (Linking) VI - 184 IP - 6 DP - 1996 Dec 1 TI - Germinal center formation and local immunoglobulin E (IgE) production in the lung after an airway antigenic challenge. PG - 2353-60 AB - Airway inflammation plays a central role in the pathogenesis of asthma. However, the precise contribution of all cell types in the development and maintenance of airway hyperreactivity and histopathology during allergic inflammation remains unclear. After sensitization of mice in the periphery, challenge by multiple intratracheal (i.t.) instillations of ovalbumin (OVA) results in eosinophilia, mononuclear cell infiltration, and airway epithelial changes analogous to that seen in asthma (Blyth, D.I., M.S. Pedrick, T.J. Savage, E.M. Hessel, and D. Fattah. 1996. Am. J. Respir. Cell Mol. Biol. 14:425-438). To investigate further the nature of the cellular infiltrate, lungs from OVA-versus saline-treated mice were processed for histology and immunohistochemistry. One of the most striking features observed was the formation of germinal centers within the parenchyma of the inflamed lungs. In addition, follicular dendritic cells (FDCs) bearing OVA on their plasma membranes appeared and, adjacent to these sites, OVA-specific IgG1-, IgE-, and IgA-producing plasma cells emerged. To confirm that antigen-specific immunoglobulins (Ig) were being produced within the parenchyma, plasma cell number and antibody production were quantitated in vitro after isolation of cells from the lung. These assays confirmed that the isotypes observed in situ were a secreted product. As IgE-dependent mechanisms have been implicated as being central to the pathogenesis of bronchial asthma, airway hyperresponsiveness was evaluated. The mice undergoing lung inflammation were hyperresponsive, while the control group remained at baseline. These data demonstrate that antigen-driven differentiation of B cells via induction of an FDC network and germinal centers occurs in the parenchyma of inflamed lungs. These germinal centers would then provide a local source of IgE-secreting plasma cells that contribute to the release of factors mediating inflammatory processes in the lung. FAU - Chvatchko, Y AU - Chvatchko Y AD - Department of Immunology, Geneva Biomedical Research Institute, Glaxo Wellcome Research and Development S.A., Switzerland. FAU - Kosco-Vilbois, M H AU - Kosco-Vilbois MH FAU - Herren, S AU - Herren S FAU - Lefort, J AU - Lefort J FAU - Bonnefoy, J Y AU - Bonnefoy JY LA - eng PT - Journal Article PL - United States TA - J Exp Med JT - The Journal of experimental medicine JID - 2985109R RN - 0 (Immunoglobulin A) RN - 0 (Immunoglobulin G) RN - 37341-29-0 (Immunoglobulin E) RN - 9006-59-1 (Ovalbumin) SB - IM MH - Animals MH - Antibody Formation MH - Female MH - Immunoglobulin A/biosynthesis MH - Immunoglobulin E/*biosynthesis MH - Immunoglobulin G/biosynthesis MH - Inflammation MH - Instillation, Drug MH - Lung/*immunology/pathology MH - Mice MH - Mice, Inbred BALB C MH - Mucous Membrane/immunology MH - Ovalbumin/administration & dosage/*immunology MH - Plasma Cells/immunology MH - Trachea/*immunology PMC - PMC2196373 EDAT- 1996/12/01 00:00 MHDA- 1996/12/01 00:01 PMCR- 1997/06/01 CRDT- 1996/12/01 00:00 PHST- 1996/12/01 00:00 [pubmed] PHST- 1996/12/01 00:01 [medline] PHST- 1996/12/01 00:00 [entrez] PHST- 1997/06/01 00:00 [pmc-release] AID - 10.1084/jem.184.6.2353 [doi] PST - ppublish SO - J Exp Med. 1996 Dec 1;184(6):2353-60. doi: 10.1084/jem.184.6.2353.