PMID- 32154245 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240328 IS - 2296-634X (Print) IS - 2296-634X (Electronic) IS - 2296-634X (Linking) VI - 8 DP - 2020 TI - Allergen Immunotherapy-Induced Immunoglobulin G4 Reduces Basophil Activation in House Dust Mite-Allergic Asthma Patients. PG - 30 LID - 10.3389/fcell.2020.00030 [doi] LID - 30 AB - It is unclear if allergen immunotherapy (AIT) can reduce allergy effector cell activation. We evaluated the basophil response during Dermatophagoides pteronyssinus (Der p) subcutaneous immunotherapy (SCIT) and its relationship to allergen-specific immunoglobulin G4 (sIgG4) in allergic rhinitis and/or asthma patients. The study included 55 subjects, of which 35 cases received Der p SCIT and 20 controls received standard medications. Symptom and medication scores (SMSs), sIgG4 levels, specific immunoglobulin E (sIgE) levels, allergen-induced basophil activation tests (BATs) in whole blood, and BAT inhibition assays in serum were determined at weeks 0, 4, 12, 16, 52, and 104 of SCIT. Levels of Der p sIgG4 in SCIT patients significantly increased after 12 weeks of treatment compared to week 0. Serum obtained from SCIT patients significantly inhibited basophil activation after 12 weeks of treatment. Removal of immunoglobulin G4 (IgG4) antibodies at week 104 reduced the ability of serum to block basophil activation. An increase of Der p sIgG4 rather than reduction of Der p sIgE correlated with the reduction of basophil activation during SCIT. The sIgG4 antibodies may compete with sIgE binding to allergens to form an immunoglobulin E (IgE)-allergen complex. SCIT reduced the sensitivity of allergen-triggered basophil activation in Der p allergic rhinitis and/or asthma patients through induction of sIgG4. CI - Copyright (c) 2020 Feng, Zeng, Su, Shi, Xian, Qin and Li. FAU - Feng, Mulin AU - Feng M AD - Department of Allergy and Clinical Immunology, Guangzhou Institute of Respiratory Health, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China. FAU - Zeng, Xiaohui AU - Zeng X AD - Department of Allergy and Clinical Immunology, Guangzhou Institute of Respiratory Health, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China. FAU - Su, Qiujuan AU - Su Q AD - Department of Allergy and Clinical Immunology, Guangzhou Institute of Respiratory Health, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China. FAU - Shi, Xu AU - Shi X AD - Department of Allergy and Clinical Immunology, Guangzhou Institute of Respiratory Health, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China. FAU - Xian, Mo AU - Xian M AD - Department of Allergy and Clinical Immunology, Guangzhou Institute of Respiratory Health, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China. FAU - Qin, Rundong AU - Qin R AD - Department of Allergy and Clinical Immunology, Guangzhou Institute of Respiratory Health, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China. FAU - Li, Jing AU - Li J AD - Department of Allergy and Clinical Immunology, Guangzhou Institute of Respiratory Health, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China. LA - eng PT - Journal Article DEP - 20200220 PL - Switzerland TA - Front Cell Dev Biol JT - Frontiers in cell and developmental biology JID - 101630250 PMC - PMC7044416 OTO - NOTNLM OT - allergen immunotherapy OT - asthma OT - basophil activation test OT - rhinitis OT - serum specific immunoglobulin G4 (IgG4) EDAT- 2020/03/11 06:00 MHDA- 2020/03/11 06:01 PMCR- 2020/01/01 CRDT- 2020/03/11 06:00 PHST- 2019/09/07 00:00 [received] PHST- 2020/01/14 00:00 [accepted] PHST- 2020/03/11 06:00 [entrez] PHST- 2020/03/11 06:00 [pubmed] PHST- 2020/03/11 06:01 [medline] PHST- 2020/01/01 00:00 [pmc-release] AID - 10.3389/fcell.2020.00030 [doi] PST - epublish SO - Front Cell Dev Biol. 2020 Feb 20;8:30. doi: 10.3389/fcell.2020.00030. eCollection 2020.