Increased serum free IgE levels in patients with chronic spontaneous urticaria (CSU)☆

Autor: Jae-Hyuk Jang, MD, Eun-Mi Yang, MS, Youngsoo Lee, MD, Young-Min Ye, MD, PhD, Jiyoung Moon, MS, Min Sook Ryu, PhD, Hae-Sim Park, MD, PhD
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: World Allergy Organization Journal, Vol 15, Iss 2, Pp 100629- (2022)
Druh dokumentu: article
ISSN: 1939-4551
DOI: 10.1016/j.waojou.2022.100629
Popis: Background: IgE bound on the surface of mast cells contributes to the pathogenesis of chronic spontaneous urticaria (CSU). Atopy is a predisposing factor for CSU, where omalizumab is a widely used monoclonal antibody to control urticaria symptoms via capturing serum free IgE. However, the role of serum free IgE is not clarified in CSU. The present study evaluated the clinical relevance of serum free IgE in patients with CSU. Methods: Eighty-eight patients with CSU and 76 healthy controls (HCs) were enrolled in this study. Serum total and Dermatophagoides pteronyssinus (Der p)-specific IgE levels were measured by ImmunoCAPs. The serum free IgE levels were measured by ELISA using a novel IgETRAP, and their associations with clinical parameters, including urticaria activity score (UAS), were evaluated. Changes in serum free and total IgE levels after omalizumab treatment were observed in 23 CSU patients in comparison between responders (≥50% reduction in UAS) and non-responders (
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