Chronic urticaria is now considered as an autoimmune disorder due to histamine-releasing autoantibodies in 40-50% of cases. These histamine releasing-autoantibodies directed against the high affinity IgE receptor or against IgE can be detected in vivo by autologous serum skin test (ASST) or in vitro by a functional assay employing basophils. ASST positivity has been found also in patients with ...

chronic idiopathic urticaria is defined as recurrent hives occurring for at least 6 weeks. in  the  majority of  cases, there  is no  identifiable underlying etiology despite  extensive evaluation. a subset of these patients is classified as having autoimmune urticaria defined by the presence of a functional igg antibody to the α subunit of the high-affinity ige receptor (fceria) or to ige. the...

BACKGROUND The pathogenesis of chronic spontaneous urticaria involves interplay between the genetic and environmental factors, most of which is still poorly understood. It is well-recognized that 30-40% of chronic spontaneous urticaria is autoimmune in nature. Chronic autoimmune urticaria is caused by anti-FcɛR1β and less frequently, by anti-IgE auto antibodies that lead to mast cell and basoph...

AIM To contribute to the understanding of the pathogenesis of chronic spontaneous urticaria (CSU) by identifying its relationship with autoimmunity and cytokines using the autologous serum skin test (ASST) and peripheral blood mononuclear cell culture (PBMC) method. MATERIAL AND METHODS Interleukins (IL)-4, IL-10, transforming growth factor (TGF-β1), interferon (IFN)-γ, IL-17A, and IL-23 leve...

I Chronic idiopathic urticaria (CIU) is the most frequent form of urticaria, accounting for 70-80% of the cases (1). CIU is defined as a 6-week or longer history of urticaria in the absence of detectable physical, allergic, vasculitic, infectious or drug-induced causes (2). The presence of autoantibodies directed toward IgE or to the high-affinity IgE Fc receptor, detected by intradermal test w...

OBJECTIVES To investigate the correlation between the clinical characteristics of chronic idiopathic urticaria (CIU) and the results of autologous serum skin test (ASST). METHODS This prospective observational study was performed in the Motahari Allergy Clinic and included 69 patients referred to the clinic with a diagnosis of CIU. ASSTs were performed on all patients. We compared the disease...

Autoimmune urticaria (AIU) is an important subset of chronic spontaneous (CSU) and can be relatively difficult to manage. Autologous serum skin test (ASST) has served as a useful bedside detect AIU its comparison with various blood biomarkers may unlock avenues in diagnosing autoimmune urticaria. Aim our study was assess role ASST CSU correlation relevant biomarkers. It hospital-based which 58 ...