Lung Responses to Pig Barn Air in Rats
Author Information
Author(s): Charavaryamath Chandrashekhar, Keet Taryn, Aulakh Gurpreet K, Townsend Hugh GG, Singh Baljit
Primary Institution: University of Saskatchewan
Hypothesis
Single or multiple exposures to barn air will result in exaggerated lung inflammation in response to a secondary insult with E. coli LPS.
Conclusion
Lungs of rats exposed to pig barn air retain the ability to respond to E. coli LPS challenge.
Supporting Evidence
- Rats exposed to barn air showed increased lung inflammation when challenged with E. coli LPS.
- Histological signs of lung inflammation were evident in barn exposed rat lungs.
- Control rats without E. coli LPS challenge showed higher levels of TGF-β2 compared to those challenged.
Takeaway
Rats exposed to pig barn air can still get inflamed when they are later exposed to bacteria, showing their lungs are still active.
Methodology
Rats were exposed to ambient or barn air for one or five days, then half received E. coli LPS challenge and were observed for lung inflammation.
Potential Biases
Potential bias in sample collection and analysis as personnel were blinded to treatment groups.
Limitations
The study was conducted on a specific rat model and may not fully represent human responses.
Participant Demographics
Specific pathogen-free, six-week-old, male, Sprague-Dawley rats.
Statistical Information
P-Value
p<0.001 for IL-1β levels
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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