1. Abundant TNF-LIGHT expression in the airways of patients with asthma with persistent airflow limitation: Association with nitrative and inflammatory profiles
- Author
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Kazuki Matsuda, Keiko Doi, Sho Uehara, Shuichiro Ohata, Nobutaka Edakuni, Yoriyuki Murata, Kazuki Hamada, Yuichi Ohteru, Ayumi Chikumoto, Keita Murakawa, Misa Harada, Tsunahiko Hirano, Junki Suizu, Keiji Oishi, Kazuto Matsunaga, Yoshikazu Yamaji, and Maki Asami-Noyama
- Subjects
Pulmonary and Respiratory Medicine ,Tumor Necrosis Factor Ligand Superfamily Member 14 ,Respiratory System ,chemistry.chemical_compound ,Forced Expiratory Volume ,medicine ,Humans ,Reactive nitrogen species ,Asthma ,business.industry ,Sputum ,medicine.disease ,humanities ,respiratory tract diseases ,Staining ,Eosinophils ,Secretory protein ,chemistry ,Immunology ,Matrix Metalloproteinase 2 ,Immunohistochemistry ,Tumor necrosis factor alpha ,medicine.symptom ,Airway ,business - Abstract
Background The role of the inflammatory secretory protein TNF-LIGHT (LIGHT) in the molecular mechanisms underlying persistent airflow limitation (PAL) in asthma remains unclear. We hypothesized that high airway LIGHT expression may be a feature of asthma with PAL associated with specific expression patterns of inflammatory molecules. Methods This hypothesis was tested in 16 patients with asthma on inhaled corticosteroid treatment. Induced sputum was collected, the expression of LIGHT and 3-nitrotyrosine (NT), which reflects the footprint of reactive nitrogen species content, was measured using immunohistochemical staining, and the inflammatory molecules in the sputum supernatant were analyzed using a magnetic bead array. Results LIGHT staining in the cells had a significantly higher intensity in participants with PAL than in participants without PAL (47.9 × 104/ml vs. 5.4 × 104/ml; p Conclusions The findings suggest that LIGHT is a key component in the association between airway inflammation and airflow limitation in patients with asthma, and its expression may be persistently correlated with the abundance of inflammatory cells and inflammatory and profibrogenic radical/molecules.
- Published
- 2021