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Previous Influenza Infection Exacerbates Allergen Specific Response and Impairs Airway Barrier Integrity in Pre-Sensitized Mice
- Source :
- International Journal of Molecular Sciences, International Journal of Molecular Sciences, Vol 22, Iss 8790, p 8790 (2021), Volume 22, Issue 16
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- In this study we assessed the effects of antigen exposure in mice pre-sensitized with allergen following viral infection on changes in lung function, cellular responses and tight junction expression. Female BALB/c mice were sensitized to ovalbumin and infected with influenza A before receiving a second ovalbumin sensitization and challenge with saline, ovalbumin (OVA) or house dust mite (HDM). Fifteen days post-infection, bronchoalveolar inflammation, serum antibodies, responsiveness to methacholine and barrier integrity were assessed. There was no effect of infection alone on bronchoalveolar lavage cellular inflammation 15 days post-infection<br />however, OVA or HDM challenge resulted in increased bronchoalveolar inflammation dominated by eosinophils/neutrophils or neutrophils, respectively. Previously infected mice had higher serum OVA-specific IgE compared with uninfected mice. Mice previously infected, sensitized and challenged with OVA were most responsive to methacholine with respect to airway resistance, while HDM challenge caused significant increases in both tissue damping and tissue elastance regardless of previous infection status. Previous influenza infection was associated with decreased claudin-1 expression in all groups and decreased occludin expression in OVA or HDM-challenged mice. This study demonstrates the importance of the respiratory epithelium in pre-sensitized individuals, where influenza-infection-induced barrier disruption resulted in increased systemic OVA sensitization and downstream effects on lung function.
- Subjects :
- tight junctions
Immunoglobulin E
Mice
Airway resistance
Claudin-1
BALB/c mice
Medicine
Biology (General)
house dust mite
Methacholine Chloride
Spectroscopy
Sensitization
Mice, Inbred BALB C
biology
medicine.diagnostic_test
Pyroglyphidae
General Medicine
respiratory system
Computer Science Applications
Chemistry
Treatment Outcome
medicine.anatomical_structure
Influenza A virus
Female
Bronchial Hyperreactivity
medicine.symptom
influenza
medicine.drug
QH301-705.5
Ovalbumin
Down-Regulation
Inflammation
Article
Catalysis
Inorganic Chemistry
Orthomyxoviridae Infections
Animals
Physical and Theoretical Chemistry
QD1-999
Molecular Biology
business.industry
epithelial barrier integrity
Airway Resistance
Organic Chemistry
lung function
respiratory tract diseases
Bronchoalveolar lavage
Immunology
biology.protein
Respiratory epithelium
Methacholine
business
Subjects
Details
- ISSN :
- 14220067
- Volume :
- 22
- Database :
- OpenAIRE
- Journal :
- International Journal of Molecular Sciences
- Accession number :
- edsair.doi.dedup.....0f0c2e749ac7aaac086a22ceb8267875