Serum YKL-40, periostin, and eosinophil-derived neurotoxin as complementary biomarkers for assessing disease severity in adults with bronchial asthma: A retrospective observational study
Background: Bronchial asthma is a heterogeneous inflammatory airway disease, and conventional clinical and inflammatory indicators may not fully reflect its biological complexity or severity. YKL-40, periostin, and eosinophil-derived neurotoxin (EDN) represent distinct aspects of airway remodeling, type 2 inflammation,...