Calprotectin in chronic rhinosinusitis eosinophil extracellular traps

钙蛋白酶 S100A8型 医学 嗜酸性粒细胞 生物标志物 髓过氧化物酶 免疫学 嗜酸性粒细胞增多症 中性粒细胞胞外陷阱 炎症 内科学 病理 疾病 生物 哮喘 生物化学 炎症性肠病
作者
Sang Hyeon Ahn,Kyu Ha Shin,Jun Taek Oh,Sang Chul Park,Min‐Seok Rha,Soo In Kim,Hyung‐Ju Cho,Joo‐Heon Yoon,Chang‐Hoon Kim
出处
期刊:International Forum of Allergy & Rhinology [Wiley]
卷期号:13 (10): 1926-1936 被引量:8
标识
DOI:10.1002/alr.23157
摘要

Calprotectin is an antimicrobial peptide primarily secreted by neutrophils. Furthermore, calprotectin secretion increases in patients with chronic rhinosinusitis (CRS) with polyps (CRSwNP) and positively correlates with neutrophil markers. However, CRSwNP is known to be associated with type 2 inflammation related to tissue eosinophilia. Therefore, the authors investigated calprotectin expression in eosinophils and eosinophil extracellular traps (EETs) and explored the associations between tissue calprotectin and the clinical findings of patients with CRS.A total of 63 patients participated, and patients diagnosed with CRS were classified based on the Japanese Epidemiological Survey of Refractory Eosinophilic Chronic Rhinosinusitis (JESREC) score. The authors performed hematoxylin and eosin staining, immunohistochemistry, immunofluorescence with calprotectin, myeloperoxidase (MPO), major basic protein (MBP), and citrullinated histone H3 with the participant's tissues. Finally, correlations between calprotectin and the clinical data were examined.Calprotectin-positive cells are co-localized not only in MPO-positive cells but also in MBP-positive cells in human tissues. Calprotectin was also involved in EETs and neutrophil extracellular traps. The number of calprotectin-positive cells in the tissue was positively correlated with the number of tissue and blood eosinophils. In addition, calprotectin in the tissue is associated with the olfactory function, Lund-Mackay computed tomography score, and JESREC score.Calprotectin, known to be secreted by neutrophils, in CRS was also expressed in eosinophils. In addition, calprotectin, which functions as an antimicrobial peptide, may play an important role in the innate immune response based on its EET involvement. Therefore, calprotectin expression could reflect as a disease severity biomarker for CRS.
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