Combination of Fluticasone and Salmeterol Reduces RSV Infection in Mice
Author Information
Author(s): Singam Rajeswari, Jena Prasanna K, Behera Sumita, Hellermann Gary R, Lockey Richard F, Ledford Dennis, Mohapatra Shyam S
Primary Institution: University of South Florida College of Medicine
Hypothesis
The combination of fluticasone propionate and salmeterol is more effective in reducing RSV-induced airway inflammation than either drug alone.
Conclusion
Fluticasone combined with salmeterol is a more effective treatment for airway hyperreactivity and inflammation in allergen-sensitized, RSV-infected mice than either drug alone.
Supporting Evidence
- The FPS treatment resulted in significant decreases in eosinophils and neutrophils in bronchoalveolar lavage fluid.
- Mice treated with FPS showed significantly lower airway hyperreactivity compared to those treated with FP or Sal alone.
- FPS treatment led to a 50% decrease in RSV titer in the lung compared to FP or Sal.
- Treatment with FPS decreased the number of apoptotic cells in the lungs compared to FP or Sal alone.
- FPS increased IFN-γ production in the lungs, correlating with reduced RSV titer.
Takeaway
Using two medicines together, fluticasone and salmeterol, helps sick mice breathe better and feel less inflammation than using just one medicine.
Methodology
Mice were sensitized with ovalbumin and infected with RSV, then treated with fluticasone, salmeterol, or their combination, and airway hyperreactivity and inflammation were measured.
Limitations
The study was conducted in a mouse model, which may not fully replicate human responses.
Participant Demographics
Female BALB/c mice, 4–6 weeks of age.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website