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Abdelmawgood IA, Kotb MA, Ashry H, Ebeed BW, Mahana NA, Mohamed AS, Eid JI, Ramadan MA, Rabie NS, Mohamed MY, Saed NT, Yasser N, Essam D, Zaki YY, Saeed S, Mahmoud A, Eladawy MM, Badr AM. β-glucan mitigates ovalbumin-induced airway inflammation by preventing oxidative stress and CD8 + T cell infiltration. Int Immunopharmacol 2024; 132:111985. [PMID: 38603862 DOI: 10.1016/j.intimp.2024.111985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 03/19/2024] [Accepted: 03/28/2024] [Indexed: 04/13/2024]
Abstract
BACKGROUND Bronchial asthma is a severe respiratory condition characterized by airway inflammation, remodeling, and oxidative stress. β-Glucan (BG) is a polysaccharide found in fungal cell walls with powerful immunomodulatory properties. This study examined and clarified the mechanisms behind BG's ameliorativeactivitiesin an allergic asthma animal model. METHOD BG was extracted from Chaga mushroom and characterized using FT-IR, UV-visible, zeta potential, and 1H NMR analysis. The mice were divided into five groups, including control, untreated asthmatic, dexamethasone (Dexa)-treated (1 mg/kg), and BG (30 and 100 mg/kg)-treated groups. RESULTS BG treatment reduced nasal scratching behavior, airway-infiltrating inflammatory cells, and serum levels of IgE significantly. Additionally, BG attenuated oxidative stress biomarkers by lowering malonaldehyde (MDA) concentrations and increasing the levels of reduced glutathione (GSH), glutathione peroxidase (GPx), and catalase (CAT). Immunohistochemical and flow cytometric analyses have confirmed the suppressive effect of BG on the percentage of airway-infiltrating cytotoxic CD8+ T cells. CONCLUSION The findings revealed the role of CD8+ T cells in the pathogenesis of asthma and the role of BG as a potential therapeutic agent for asthma management through the suppression of airway inflammation and oxidative stress.
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Affiliation(s)
| | - Mohamed A Kotb
- Zoology Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
| | - Hamid Ashry
- Biochemistry Branch, Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Bassam W Ebeed
- Zoology Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
| | - Noha A Mahana
- Zoology Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
| | | | - Jehane I Eid
- Zoology Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
| | - Marwa A Ramadan
- Department of Laser Application in Metrology, Photochemistry, and Agriculture National Institute of Laser-Enhanced Science (NILES), Cairo University, Giza, Egypt
| | - Nahla S Rabie
- Zoology Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
| | - Mariam Y Mohamed
- Zoology Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
| | - Nermeen Th Saed
- Zoology Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
| | - Nada Yasser
- Zoology Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
| | - Dina Essam
- Zoology Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
| | - Youssef Y Zaki
- Zoology Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
| | - Samar Saeed
- Zoology Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
| | - Asmaa Mahmoud
- Zoology Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
| | - Marwan M Eladawy
- Zoology Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
| | - Abeer Mahmoud Badr
- Zoology Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
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