Abstract
Background: Allergic asthma is a chronic inflammatory disorder of the airways caused by hypersensitivity and characterized by Th2 cytokine i.e. IL-4, that contribute to enhanced proliferation and differentiation of Th2 cells and switch of B cells from IgM to IgE production. Vitamin D also has a role in proliferation, differentiation, apoptosis of cells of the immune system, production of cytokines, and immunoglobulins. Elevated levels of IL-17 have been documented in bronchial submucosa and relationship of IL-17 and severe hyper responsiveness of airways have been established. Therefore, a study was conducted to determine serum level of vitamin D, IgE and IL-17 in patients of bronchial asthma. Methodology: It was a comparative study, which included 82 subjects i.e. Group-I (41 subjects without asthma), and group-II (41 asthmatic patients). Serum levels of IL-17, IgE and vitamin D
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