Abstract:
:T-lymphocytes, including Th17-cells and T-cells expressing acetylcholine (ACh), are key components of systemic inflammation in chronic obstructive pulmonary disease (COPD). We investigated whether ACh promotes Th17 cells in COPD. ACh, IL-17A, IL-22, RORγt, FOXP3 expression and AChIL-17A, AChIL-22, AChRORγt coexpression was evaluated in peripheral blood mononuclear cells (PBMC) from COPD patients (n=16), healthy smokers (HS) (n=12) and healthy control subjects (HC) (n=13) (cultured for 48 h with PMA) by flow cytometry. Furthermore, we studied the effect of Tiotropium (Spiriva®) (100 nM) and Olodaterol (1nM) alone or in combination, and of hemicholinium-3 (50 μM) on AChIL-17A, AChIL-22, AChRORγt, and FOXP3 expression in CD3+PBT-cells of PBMC from COPD patients (n=6) cultured for 48 h with PMA. CD3+PBT-cells expressing ACh, IL-17A, IL-22 and RORγt together with CD3+PBT-cells co-expressing AChIL-17A, AChIL-22 and AChRORγt were significantly increased in COPD patients compared to HC and HS subjects with higher levels in HS than in HC without a significant difference. CD3+FOXP3+PBT-cells were increased in HS than in HC and COPD. Tiotropium and Olodaterol reduced the percentage of CD3+PBT-cells co-expressing AChIL-17A, AChIL-22, and AChRORγt while increased the CD3+FOXP3+PBT-cells in PBMC from COPD patients, cultured in vitro for 48 h, with an additive effect when used in combination. Hemicholnium-3 reduced the percentage of ACh+IL-17A+, ACh+IL-22+, and ACh+RORγt+ while it did not affect FOXP3+ expression in CD3+PBT-cells from cultured PBMC from COPD patients. We concluded that ACh might promote the increased levels of Th17-cells in systemic inflammation of COPD. Long-acting β2-agonists and anticholinergic drugs might contribute to control this event.
journal_name
Immunobiologyjournal_title
Immunobiologyauthors
Profita M,Albano GD,Riccobono L,Di Sano C,Montalbano AM,Gagliardo R,Anzalone G,Bonanno A,Pieper MP,Gjomarkaj Mdoi
10.1016/j.imbio.2014.01.004subject
Has Abstractpub_date
2014-05-01 00:00:00pages
392-401issue
5eissn
0171-2985issn
1878-3279pii
S0171-2985(14)00013-8journal_volume
219pub_type
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