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Anti-Inflammatory Properties of Fructo-Oligosaccharides in a Calf Lung Infection Model and in Mannheimia haemolytica -Infected Airway Epithelial Cells.
- Source :
-
Nutrients [Nutrients] 2021 Oct 06; Vol. 13 (10). Date of Electronic Publication: 2021 Oct 06. - Publication Year :
- 2021
-
Abstract
- Emerging antimicrobial-resistant pathogens highlight the importance of developing novel interventions. Here, we investigated the anti-inflammatory properties of Fructo-oligosaccharides (FOS) in calf lung infections and in airway epithelial cells stimulated with pathogens, and/or bacterial components. During a natural exposure, 100 male calves were fed milk replacer with or without FOS for 8 weeks. Then, immune parameters and cytokine/chemokine levels in the bronchoalveolar lavage fluid (BALF) and blood were measured, and clinical scores were investigated. Calf primary bronchial epithelial cells (PBECs) and human airway epithelial cells (A549) were treated with Mannheimia haemolytica , lipopolysaccharides (LPS), and/or flagellin, with or without FOS pretreatment. Thereafter, the cytokine/chemokine levels and epithelial barrier function were examined. Relative to the control (naturally occurring lung infections), FOS-fed calves had greater macrophage numbers in BALF and lower interleukin (IL)-8, IL-6, and IL-1β concentrations in the BALF and blood. However, FOS did not affect the clinical scores. At slaughter, FOS-fed calves had a lower severity of lung lesions compared to the control. Ex vivo, FOS prevented M. haemolytica -induced epithelial barrier dysfunction. Moreover, FOS reduced M. haemolytica - and flagellin-induced (but not LPS-induced) IL-8, TNF-α, and IL-6 release in PBECs and A549 cells. Overall, FOS had anti-inflammatory properties during the natural incidence of lung infections but had no effects on clinical symptoms.
- Subjects :
- Animals
Cattle
Disease Models, Animal
Epithelial Cells microbiology
Lung microbiology
Pneumonia of Calves, Enzootic microbiology
Anti-Inflammatory Agents pharmacology
Mannheimia haemolytica drug effects
Oligosaccharides pharmacology
Pasteurella multocida drug effects
Pneumonia of Calves, Enzootic drug therapy
Subjects
Details
- Language :
- English
- ISSN :
- 2072-6643
- Volume :
- 13
- Issue :
- 10
- Database :
- MEDLINE
- Journal :
- Nutrients
- Publication Type :
- Academic Journal
- Accession number :
- 34684515
- Full Text :
- https://doi.org/10.3390/nu13103514