PMID- 27262379 OWN - NLM STAT- MEDLINE DCOM- 20170310 LR - 20170827 IS - 1879-0712 (Electronic) IS - 0014-2999 (Linking) VI - 786 DP - 2016 Sep 5 TI - Adalimumab ameliorates OVA-induced airway inflammation in mice: Role of CD4(+) CD25(+) FOXP3(+) regulatory T-cells. PG - 100-108 LID - S0014-2999(16)30360-0 [pii] LID - 10.1016/j.ejphar.2016.06.002 [doi] AB - Asthma is a chronic inflammatory heterogeneous disorder initiated by a dysregulated immune response which drives disease development in susceptible individuals. Though T helper 2 (TH2) biased responses are usually linked to eosinophilic asthma, other Th cell subsets induce neutrophilic airway inflammation which provokes the most severe asthmatic phenotypes. A growing evidence highlights the role of T regulatory (Treg) cells in damping abnormal Th responses and thus inhibiting allergy and asthma. Therefore, strategies to induce or augment Treg cells hold promise for treatment and prevention of allergic airway inflammation. Recently, the link between Tumor necrosis factor-alpha (TNF-alpha) and Treg has been uncovered, and TNF-alpha antagonists are increasingly used in many autoimmune diseases. Yet, their benefits in allergic airway inflammation is not clarified. We investigated the effect of Adalimumab, a TNF-alpha antagonist, on Ovalbumin (OVA)-induced allergic airway inflammation in CD1 mice and explored its impact on Treg cells. Our results showed that Adalimumab treatment attenuated the OVA-induced increase in serum IgE, TH2 and TH1 derived inflammatory cytokines (IL-4 and IFN-gamma, respectively) in bronchoalveolar lavage (BAL) fluid, suppressed recruitment of inflammatory cells in BAL fluid and lung, and inhibited BAL fluid neutrophilia. It also ameliorated goblet cell metaplasia and bronchial fibrosis. Splenocytes flow cytometry revealed increased percentage of CD4(+) CD25(+) FOXP3(+) Treg cells by Adalimumab that was associated with increase in their suppressive activity as shown by elevated BAL fluid IL-10. We conclude that the beneficial effects of Adalimumab in this CD1 neutrophilic model of allergic airway inflammation are attributed to augmentation of Treg cell number and activity. CI - Copyright (c) 2016 Elsevier B.V. All rights reserved. FAU - Elsakkar, Mohamed G AU - Elsakkar MG AD - Department of Clinical Pharmacology, Faculty of Medicine, Alexandria University, Alexandria, Egypt. FAU - Sharaki, Olla A AU - Sharaki OA AD - Department of Clinical and Chemical Pathology, Faculty of Medicine, Alexandria University, Alexandria, Egypt. FAU - Abdallah, Dina M AU - Abdallah DM AD - Department of Pathology, Faculty of Medicine, Alexandria University, Alexandria, Egypt. FAU - Mostafa, Dalia K AU - Mostafa DK AD - Department of Clinical Pharmacology, Faculty of Medicine, Alexandria University, Alexandria, Egypt. Electronic address: dalia.kashishy@alexmed.edu.eg. FAU - Shekondali, Fadia T AU - Shekondali FT AD - Department of Pharmacology, Faculty of Medicine, EL-Zawia University, Libya. LA - eng PT - Journal Article DEP - 20160602 PL - Netherlands TA - Eur J Pharmacol JT - European journal of pharmacology JID - 1254354 RN - 0 (Cytokines) RN - 0 (Forkhead Transcription Factors) RN - 0 (Foxp3 protein, mouse) RN - 0 (Interleukin-2 Receptor alpha Subunit) RN - 37341-29-0 (Immunoglobulin E) RN - 9006-59-1 (Ovalbumin) RN - FYS6T7F842 (Adalimumab) SB - IM MH - Adalimumab/*pharmacology/therapeutic use MH - Animals MH - Asthma/complications/*drug therapy/immunology/metabolism MH - Bronchoalveolar Lavage Fluid MH - Cytokines/metabolism MH - Forkhead Transcription Factors/*metabolism MH - Hyperplasia/complications MH - Immunoglobulin E/blood MH - Interleukin-2 Receptor alpha Subunit/*metabolism MH - Leukocytosis/complications MH - Lung/drug effects/immunology/pathology MH - Male MH - Mice MH - Ovalbumin/*immunology MH - Pulmonary Fibrosis/complications MH - Spleen/immunology MH - T-Lymphocytes, Regulatory/*drug effects/immunology/metabolism OTO - NOTNLM OT - Adalimumab OT - Adalimumab (PubChem SID: 50070208) OT - Airway inflammation OT - Aluminum Hydroxide (PubChem CID: 6328211) OT - Asthma OT - FOXP3(+) Treg cells OT - IL-10 (PubChem CID: 146070) OT - Neutrophils OT - Ovalbumin (PubChem CID: 71311993 ) OT - Phosphate buffered saline (PubChem CID: 24978514) OT - TNF-alpha EDAT- 2016/06/06 06:00 MHDA- 2017/03/11 06:00 CRDT- 2016/06/06 06:00 PHST- 2016/01/31 00:00 [received] PHST- 2016/05/23 00:00 [revised] PHST- 2016/06/01 00:00 [accepted] PHST- 2016/06/06 06:00 [entrez] PHST- 2016/06/06 06:00 [pubmed] PHST- 2017/03/11 06:00 [medline] AID - S0014-2999(16)30360-0 [pii] AID - 10.1016/j.ejphar.2016.06.002 [doi] PST - ppublish SO - Eur J Pharmacol. 2016 Sep 5;786:100-108. doi: 10.1016/j.ejphar.2016.06.002. Epub 2016 Jun 2.