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Elevated Levels of IL-9 Fail to Suppress Pathogenic T helper 17 cells in Sjogrens Disease

2025-12-22 allergy and immunology Title + abstract only
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Sjogrens disease (SjD) is a chronic autoimmune disorder characterized by inflammation of the exocrine glands, leading to dry mouth and dry eyes. This study investigates the role of interleukin-9 (IL-9) and T helper 9 (Th9) cells in the pathogenesis of SjD. We found that serum IL-9 levels were significantly elevated in SjD patients and correlated with clinical laboratory parameters, including autoantibody production. In a mouse model of SjD, IL-9 and Th9-associated cytokines were also elevated, a...

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