PMID- 26503747 OWN - NLM STAT- MEDLINE DCOM- 20161219 LR - 20161230 IS - 1365-2222 (Electronic) IS - 0954-7894 (Linking) VI - 46 IP - 4 DP - 2016 Apr TI - The dendritic cell high-affinity IgE receptor is overexpressed in both asthma and severe COPD. PG - 575-83 LID - 10.1111/cea.12664 [doi] AB - BACKGROUND: The reduction of asthma exacerbations following omalizumab treatment has been related to the suppression of the high-affinity IgE receptor (FcepsilonRI) on plasmacytoid dendritic cells (DCs). However, the FcepsilonRI expression on DCs in chronic obstructive pulmonary disease (COPD) is unknown. OBJECTIVE: To compare FcepsilonRI expression on DCs in COPD with patients with allergic asthma and healthy controls, and to relate the findings to clinical parameters, blood eosinophil concentrations and serum immunoglobin E (IgE) concentrations. METHODS: Using four-colour flow cytometry, FcepsilonRI expression on blood myeloid DCs and plasmacytoid DCs was analyzed in 64 patients with COPD, 20 patients with allergic asthma, 41 asymptomatic never smokers and 21 asymptomatic current smokers. RESULTS: As compared with never smokers, current smokers displayed an increased expression of the FcepsilonRI on myeloid and plasmacytoid DCs. In patients with COPD, the expression of the FcepsilonRI on plasmacytoid DCs, but not myeloid DCs, increased from spirometric GOLD stage 2 to GOLD stage 4, and was correlated with several lung function parameters. Patients with severe COPD and patients with allergic asthma displayed a similar FcepsilonRI overexpression on plasmacytoid DCs. In all groups, there was a positive correlation between total IgE serum concentrations and the FcepsilonRI expression on plasmacytoid DCs. CONCLUSIONS AND CLINICAL RELEVANCE: Severe COPD and allergic asthma are characterized by a similar overexpression of the high-affinity IgE receptor on plasmacytoid DCs. In view of the effect of anti-IgE on exacerbations in asthma, trials investigating the effect of anti-IgE on exacerbations in severe COPD appear to be warranted. CI - (c) 2015 John Wiley & Sons Ltd. FAU - Stoll, P AU - Stoll P AD - Department of Pneumology and Critical Care Medicine, University of Rostock, Rostock, Germany. FAU - Bahker, A AU - Bahker A AD - Department of Pneumology and Critical Care Medicine, University of Rostock, Rostock, Germany. FAU - Ulrich, M AU - Ulrich M AD - Department of Pneumology and Critical Care Medicine, University of Rostock, Rostock, Germany. FAU - Bratke, K AU - Bratke K AD - Department of Pneumology and Critical Care Medicine, University of Rostock, Rostock, Germany. FAU - Garbe, K AU - Garbe K AD - Department of Pneumology and Critical Care Medicine, University of Rostock, Rostock, Germany. FAU - Christian Virchow, J AU - Christian Virchow J AD - Department of Pneumology and Critical Care Medicine, University of Rostock, Rostock, Germany. FAU - Lommatzsch, M AU - Lommatzsch M AD - Department of Pneumology and Critical Care Medicine, University of Rostock, Rostock, Germany. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Clin Exp Allergy JT - Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology JID - 8906443 RN - 0 (Receptors, IgE) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Asthma/diagnosis/*immunology/*metabolism MH - Dendritic Cells/*immunology/*metabolism MH - Eosinophils MH - Female MH - Flow Cytometry MH - Gene Expression MH - Humans MH - Immunoglobulin E/blood/immunology MH - Immunophenotyping MH - Leukocyte Count MH - Male MH - Middle Aged MH - Pulmonary Disease, Chronic Obstructive/diagnosis/*immunology/*metabolism MH - Receptors, IgE/genetics/*metabolism MH - Respiratory Function Tests MH - Risk Factors MH - Severity of Illness Index OTO - NOTNLM OT - COPD OT - asthma OT - dendritic cell OT - flow cytometry OT - immunoglobulin E EDAT- 2015/10/28 06:00 MHDA- 2016/12/20 06:00 CRDT- 2015/10/28 06:00 PHST- 2015/07/21 00:00 [received] PHST- 2015/08/31 00:00 [revised] PHST- 2015/10/12 00:00 [accepted] PHST- 2015/10/28 06:00 [entrez] PHST- 2015/10/28 06:00 [pubmed] PHST- 2016/12/20 06:00 [medline] AID - 10.1111/cea.12664 [doi] PST - ppublish SO - Clin Exp Allergy. 2016 Apr;46(4):575-83. doi: 10.1111/cea.12664.