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10.1111/cea.14088

http://scihub22266oqcxt.onion/10.1111/cea.14088
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34962673!ä!34962673

suck abstract from ncbi


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pmid34962673      Clin+Exp+Allergy 2022 ; 52 (7): 878-887
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  • Suppression function against environmental dust exposure after Dermatophagoides pteronyssinus immunotherapy is associated with production of specific and cross-reactive immunoglobulin G4 #MMPMID34962673
  • Feng M; Luo T; Xian M; Shi X; Qin R; Zeng X; Su Q; Li J
  • Clin Exp Allergy 2022[Jul]; 52 (7): 878-887 PMID34962673show ga
  • BACKGROUND: Whether Dermatophagoides pteronyssinus (Der-p) allergen immunotherapy (AIT) can induce Dermatophagoides farina (Der-f)-specific immunoglobulin (sIg) G4 production, and tolerance to environmental allergens has not been fully investigated. OBJECTIVE: We aimed to determine serum Der-p-sIgG4 and Der-f-sIgG4 levels in asthma and/or rhinitis patients undergoing Der-p AIT and their ability to reduce immune responses triggered by indoor dust extracts. METHODS: We performed a real-world prospective trial and enrolled patients with allergic rhinitis and/or asthma in Guangzhou, China. These patients received either Der-p AIT (SCIT group) or routine medications (non-SCIT group) for 156 weeks. Clinical outcomes were assessed by the combined symptom medication score (SMS) and FEV(1) % changes. House dust samples were collected to analyse allergen levels. Serum levels of Der-p-sIgG4 and Der-f-sIgG4, serum inhibitory capacity against Der-p, Der-f and indoor dust extract by sIgE-facilitated allergen binding to B cells (IgE-FAB), and serum blocking indoor dust extract-induced basophil activation inhibition assays (BATI) in peripheral blood monocytes were carried out at weeks 0, 4, 12, 16, 52, 104 and 156 after the initiations of the treatments. RESULTS: Our study enrolled a total of 60 participants, with 30 patients in each group. Patients in the SCIT group had significantly improved SMS when compared with the baseline and the patients in the non-SCIT group. Median levels of Der-p 1 and Der-f 1 in indoor dust extract were 1.86 mug/g and 4.74 mug/g, respectively. Serum Der-p-sIgG4 and Der-f-IgG4 levels in SCIT patients showed a significant increase from weeks 12 to 156. Serum in these SCIT patients could significantly block Der-p, Der-f and indoor dust extract formation of allergen-sIgE complex and reduced the threshold of IgE-FAB from 16 weeks after the initiation of the treatment. The capacity to inhibit Der-p, Der-f and indoor dust extract BATI was observed in SCIT serum after 12 weeks. Der-p-sIgG4 and Der-f-sIgG4 had a significant correlation with IgE-FAB and BATI in SCIT patients at all time points. CONCLUSION: Single Der-p immunotherapy induced both Der-p-sIgG4 and Der-f-sIgG4 production, which might cross-reactively induce tolerance against environmental allergen exposure in patients with asthma and/or rhinitis.
  • |*Asthma[MESH]
  • |*Rhinitis[MESH]
  • |Allergens[MESH]
  • |Animals[MESH]
  • |Dermatophagoides pteronyssinus[MESH]
  • |Desensitization, Immunologic[MESH]
  • |Dust[MESH]
  • |Humans[MESH]
  • |Immunoglobulin E[MESH]
  • |Immunoglobulin G[MESH]
  • |Immunologic Factors[MESH]


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