The Study of Differences in Eosinophil Function and Subsets in Patients With Eosinophilic Pulmonary Diseases Based on Flow Cytometry Analysis
The study subjects of this research are patients with eosinophil-associated pulmonary diseases, including eosinophilic granulomatosis with polyangiitis, idiopathic hypereosinophilic syndrome, idiopathic acute eosinophilic pneumonia, idiopathic chronic eosinophilic pneumonia, and primary simple pulmonary eosinophilia. The aim is to detect eosinophil subtypes in peripheral blood based on surface protein expression, to understand the differences in eosinophil subtypes among patients with different diseases, to elucidate the significance of different eosinophil subtypes, and ultimately to provide a theoretical basis for the selection of treatment directions for patients.
• For Healthy Volunteers: healthy volunteers matching the age and gender of the study subjects
• For EPD: ① Persistent eosinophil count increase\>1500 per cubic millimeter for more than 6 months. ② Lack of evidence of a secondary cause of eosinophilia is required. ③ Signs and symptoms of end-organ damage presumed to be secondary to eosinophilia