ArticleFrontiers in immunology2025
Th2 predominance and decreased NK cells in patients with hereditary angioedema.
Article in Frontiers in immunology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Article
- The immunomodulatory potential of bradykinin signaling in autoimmune conditions.Frontiers in immunology · 2026Review
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4 authors.
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Abstract
Background: In this study we included patients with hereditary angioedema (HAE) caused by decreased levels of C1 inhibitor (HAE-C1INH). An increased risk of autoimmune disorders, particularly systemic lupus erythematosus (SLE), has been reported in HAE-C1INH. This suggests that complement consumption affects adaptive immunity. Objective: To investigate lymphocyte subpopulations in relation to disease activity and complement activation in HAE-C1INH patients and matched controls. Methods: Flow cytometry of peripheral blood lymphocyte populations, measurements of complement and complement fragments, and collection of clinical data. Results: NK cell counts were lower in HAE-C1INH patients, and their frequencies were related to disease activity. The T helper (Th) cell balance was skewed towards more Th2 cells and less Th1 cells in HAE-C1INH patients compared to controls. There were also lower frequencies of class-switched B cells and plasmablasts in patients. Levels of C4 and the complement activation fragment C3d were related to disease activity. Conclusions: Blood lymphocyte populations are altered in HAE-C1INH, a finding which may be of pathophysiological importance considering the increased risks of both autoimmunity and allergy associated with HAE-C1INH.
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