PMID- 25775429 OWN - NLM STAT- MEDLINE DCOM- 20160329 LR - 20181113 IS - 1465-993X (Electronic) IS - 1465-9921 (Print) IS - 1465-9921 (Linking) VI - 16 IP - 1 DP - 2015 Feb 7 TI - Imbalance of dendritic cell co-stimulation in COPD. PG - 19 LID - 10.1186/s12931-015-0174-x [doi] LID - 19 AB - BACKGROUND: Dendritic cells (DCs) control immunity and play a role in the pathogenesis of chronic obstructive pulmonary disease (COPD). However, the expression of function-associated surface molecules on circulating DCs in COPD is unknown. METHODS: Four-colour flow cytometry was used to compare blood DC surface molecules of 54 patients with COPD (median age: 59 years; median FEV1: 38% predicted, median CAT score: 24) with two age-matched control groups with normal lung function: 21 current smokers and 21 never-smokers. RESULTS: Concentrations of plasmacytoid DCs (pDCs) and myeloid DCs (mDCs) and the mDC/pDC ratio did not differ between the groups. The increased expression of BDCA-1, BDCA-3, CD86 and CCR5 on mDCs in patients with COPD did not significantly differ from smokers with normal lung function. In contrast, COPD was specifically characterised by a decreased expression of the anti-inflammatory co-stimulatory molecule PD-L1 on pDCs and an increased expression of the pro-inflammatory co-stimulatory molecule OX40 ligand (OX40L) on mDCs. These changes were not confined to patients with elevated systemic inflammation markers (leukocytes, c-reactive protein, interleukin-6, fibrinogen). The ratio of OX40L to PD-L1 expression (OX40L/PD-L1 ratio), a quantitative measure of imbalanced DC co-stimulation, correlated with the severity of pulmonary emphysema in patients with COPD. CONCLUSION: An imbalance of DC co-stimulation might contribute to the pathogenesis of COPD. FAU - Stoll, Paul AU - Stoll P AD - Abteilung fur Pneumologie und Internistische Intensivmedizin, Zentrum fur Innere Medizin, Universitat Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany. dr.paul.stoll@googlemail.com. FAU - Ulrich, Martin AU - Ulrich M AD - Abteilung fur Pneumologie und Internistische Intensivmedizin, Zentrum fur Innere Medizin, Universitat Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany. martin.ulrich@hotmail.de. FAU - Bratke, Kai AU - Bratke K AD - Abteilung fur Pneumologie und Internistische Intensivmedizin, Zentrum fur Innere Medizin, Universitat Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany. kai.bratke@web.de. FAU - Garbe, Katharina AU - Garbe K AD - Abteilung fur Pneumologie und Internistische Intensivmedizin, Zentrum fur Innere Medizin, Universitat Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany. Katharina.Garbe@gmx.net. FAU - Virchow, J Christian AU - Virchow JC AD - Abteilung fur Pneumologie und Internistische Intensivmedizin, Zentrum fur Innere Medizin, Universitat Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany. jc.h.virchow@sunrise.ch. FAU - Lommatzsch, Marek AU - Lommatzsch M AD - Abteilung fur Pneumologie und Internistische Intensivmedizin, Zentrum fur Innere Medizin, Universitat Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany. marek.lommatzsch@med.uni-rostock.de. LA - eng PT - Journal Article DEP - 20150207 PL - England TA - Respir Res JT - Respiratory research JID - 101090633 RN - 0 (Antigens, Surface) RN - 0 (Biomarkers) RN - 0 (Cytokines) RN - 0 (Inflammation Mediators) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Antigens, Surface/blood/*immunology MH - Biomarkers/blood MH - Case-Control Studies MH - Cytokines/blood/*immunology MH - Dendritic Cells/*immunology/metabolism/physiology MH - Female MH - Flow Cytometry MH - Forced Expiratory Volume MH - Humans MH - Inflammation Mediators/blood/*immunology MH - Lung/*immunology/metabolism/physiopathology MH - Male MH - Middle Aged MH - Pulmonary Disease, Chronic Obstructive/blood/diagnosis/*immunology/physiopathology MH - Pulmonary Emphysema/blood/diagnosis/*immunology/physiopathology MH - Severity of Illness Index MH - Smoking/adverse effects PMC - PMC4335663 EDAT- 2015/03/17 06:00 MHDA- 2016/03/30 06:00 PMCR- 2015/02/07 CRDT- 2015/03/17 06:00 PHST- 2014/09/18 00:00 [received] PHST- 2015/01/19 00:00 [accepted] PHST- 2015/03/17 06:00 [entrez] PHST- 2015/03/17 06:00 [pubmed] PHST- 2016/03/30 06:00 [medline] PHST- 2015/02/07 00:00 [pmc-release] AID - s12931-015-0174-x [pii] AID - 174 [pii] AID - 10.1186/s12931-015-0174-x [doi] PST - epublish SO - Respir Res. 2015 Feb 7;16(1):19. doi: 10.1186/s12931-015-0174-x.