Abstract
Background: Bronchial asthma is a lung disorder characterized by chronic allergic inflammation of the airways, and several of the immune and non-immune cells contribute to asthma's pathogenicity. B-cell activation plays an essential role in developing allergic inflammation in the lungs. CXCL13 is a potent B-cell chemoattractant chemokine, which has a crucial role in the recruitment and trafficking of B cells after interaction with its receptor CXCR5. This study is aimed to evaluate plasma levels of CXCL13 and its receptor CXCR5 in Saudi patients with asthma exacerbation relative to healthy controls.Methods: A total of 23 patients with asthma exacerbation and 20 healthy controls participated in this study. Total immunoglobulin E (IgE) and CXCL13 protein levels were measured in the plasma of patients with asthma exacerbations and healthy controls by specific enzyme-linked immunosorbent assay (ELISA). Gene expression mRNA for CXCR5 was measured using real-time polymerase chain reaction (RT-PCR).Results: Total IgE protein concentrations were elevated significantly in asthma exacerbation patients than that in healthy controls. CXCL13 protein levels were increased significantly in the asthma group relative to healthy controls. In addition, CXCR5 mRNA levels were elevated significantly in the asthma group than in the healthy controls.Conclusions: Measurement of CXCL13 and CXCR5 may be used as an additional biomarker of asthma exacerbation, and targeting CXCL13 or its receptor may be used as new treatment options in asthma.
Highlights
Bronchial asthma is a lung disorder characterized by chronic allergic inflammation in the airways with several symptoms including coughing, wheezing, airway smooth muscle construction, and deflects in breathing
B lymphocytes have an essential role in enhancing allergic inflammation in the airways, and it regulates the immune response in the lung through the production of Ig E antibody following the exposure of dendritic cells (DCs) to specific allergens that can be processed and presented as antigenic peptide and displayed to effector CD4+ T-helper lymphocytes (Th2) that are further enhancing allergic inflammation via production of cytokines, such as IL-4, IL-5, and IL-13 [4]
Atopic or allergic asthma is a kind of asthma characterized by an immunoglobulin E (IgE) response
Summary
Bronchial asthma is a lung disorder characterized by chronic allergic inflammation in the airways with several symptoms including coughing, wheezing, airway smooth muscle construction, and deflects in breathing. B lymphocytes have an essential role in enhancing allergic inflammation in the airways, and it regulates the immune response in the lung through the production of Ig E antibody following the exposure of dendritic cells (DCs) to specific allergens that can be processed and presented as antigenic peptide and displayed to effector CD4+ T-helper lymphocytes (Th2) that are further enhancing allergic inflammation via production of cytokines, such as IL-4, IL-5, and IL-13 [4]. Bronchial asthma is a lung disorder characterized by chronic allergic inflammation of the airways, and several of the immune and non-immune cells contribute to asthma's pathogenicity. B-cell activation plays an essential role in developing allergic inflammation in the lungs. This study is aimed to evaluate plasma levels of CXCL13 and its receptor CXCR5 in Saudi patients with asthma exacerbation relative to healthy controls
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