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Local eosinophils are associated with increased IgA subclass levels in the sinonasal mucosa of chronic rhinosinusitis with polyp patients.
Allergy, Asthma & Clinical Immunology ( IF 2.6 ) Pub Date : 2020-04-25 , DOI: 10.1186/s13223-020-00428-y
Hossein Aazami 1 , Farhad Seif 2, 3 , Babak Ghalehbaghi 4 , Pegah Babaheidarian 5 , Alireza Mohebbi 4 , Aslan Ahmadi 4 , Majid Khoshmirsafa 1, 6 , Sahand Ghalehbaghi 4 , Babak Behnam 7 , Kobra Zinat Entezami 1 , Zahra Madjd 8 , Reza Falak 1, 6
Affiliation  

Background Chronic rhinosinusitis (CRS) describes an inflammatory condition affecting the sinonasal mucosa. As the immune system players such as immunoglobulins play prominent roles in the development of CRS, we aimed to investigate the expression of IgA subclasses and factors involved in IgA class switching in the sinonasal mucosa of CRS patients. Methods Specimens were collected from the sinonasal mucosa of the healthy controls and CRS patients. Histological assessments were performed by H&E and immunohistochemistry. Real-time PCR and ELISA methods were applied to measure gene expression and protein levels extracted from tissue samples, respectively. Results We observed that total IgA and subclass-positive cells were higher in the patient groups than controls. There was a significant correlation between the number of eosinophils and total IgA and subclasses-positive cells (Pv < 0.0001). The expression of CXCL13, BAFF, AID, and germline transcripts were increased in CRSwNP patients. In contrast to IgA2 levels, IgA1 levels were significantly increased in the sinonasal tissue of CRSwNP patients (Pv < 0.01). TGF-β was significantly elevated in the sinonasal tissue of patients with CRSsNP. Conclusions Increased protein levels of IgA subclasses and related antibody-producing cells were associated with elevated eosinophils in CRSwNP patients which may result in eosinophil pathological functions. Several therapeutic approaches might be developed to modulate the IgA production to ameliorate the inflammatory mechanisms in CRSwNP patients.

中文翻译:

局部嗜酸性粒细胞与伴有息肉的慢性鼻窦炎患者鼻窦黏膜中 IgA 亚类水平升高有关。

背景慢性鼻窦炎 (CRS) 描述了一种影响鼻窦黏膜的炎症状况。由于免疫系统参与者如免疫球蛋白在 CRS 的发展中发挥着重要作用,我们旨在研究 IgA 亚类的表达和参与 IgA 类转换在 CRS 患者鼻腔黏膜中的因素。方法 标本取自健康对照者和CRS患者的鼻窦黏膜。通过 H&E 和免疫组织化学进行组织学评估。应用实时 PCR 和 ELISA 方法分别测量从组织样本中提取的基因表达和蛋白质水平。结果 我们观察到患者组中的总 IgA 和亚类阳性细胞高于对照组。嗜酸性粒细胞数量与总 IgA 和亚类阳性细胞之间存在显着相关性(Pv < 0.0001)。在 CRSwNP 患者中,CXCL13、BAFF、AID 和生殖系转录本的表达增加。与 IgA2 水平相比,CRSwNP 患者的鼻窦组织中 IgA1 水平显着升高(Pv < 0.01)。CRSsNP患者的鼻窦组织中TGF-β显着升高。结论 IgA亚类及相关抗体产生细胞蛋白水平升高与CRSwNP患者嗜酸性粒细胞升高有关,可能导致嗜酸性粒细胞病理功能改变。可能会开发几种治疗方法来调节 IgA 的产生,以改善 CRSwNP 患者的炎症机制。在 CRSwNP 患者中,CXCL13、BAFF、AID 和生殖系转录本的表达增加。与 IgA2 水平相比,CRSwNP 患者的鼻窦组织中 IgA1 水平显着升高(Pv < 0.01)。CRSsNP患者的鼻窦组织中TGF-β显着升高。结论 IgA亚类及相关抗体产生细胞蛋白水平升高与CRSwNP患者嗜酸性粒细胞升高有关,可能导致嗜酸性粒细胞病理功能改变。可能会开发几种治疗方法来调节 IgA 的产生,以改善 CRSwNP 患者的炎症机制。在 CRSwNP 患者中,CXCL13、BAFF、AID 和生殖系转录本的表达增加。与 IgA2 水平相比,CRSwNP 患者的鼻窦组织中 IgA1 水平显着升高(Pv < 0.01)。CRSsNP患者的鼻窦组织中TGF-β显着升高。结论 IgA亚类及相关抗体产生细胞蛋白水平升高与CRSwNP患者嗜酸性粒细胞升高有关,可能导致嗜酸性粒细胞病理功能改变。可能会开发几种治疗方法来调节 IgA 的产生,以改善 CRSwNP 患者的炎症机制。0.01)。CRSsNP患者的鼻窦组织中TGF-β显着升高。结论 IgA亚类及相关抗体产生细胞蛋白水平升高与CRSwNP患者嗜酸性粒细胞升高有关,可能导致嗜酸性粒细胞病理功能改变。可能会开发几种治疗方法来调节 IgA 的产生,以改善 CRSwNP 患者的炎症机制。0.01)。CRSsNP患者的鼻窦组织中TGF-β显着升高。结论 IgA亚类及相关抗体产生细胞蛋白水平升高与CRSwNP患者嗜酸性粒细胞升高有关,可能导致嗜酸性粒细胞病理功能改变。可能会开发几种治疗方法来调节 IgA 的产生,以改善 CRSwNP 患者的炎症机制。
更新日期:2020-04-25
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