Abstract
Purpose of Review
Microbial biofilms seem to play an active role in the pathogenesis of chronic rhinosinusitis (CRS). They represent an adaptive defense resource enabling resistance to antibiotics and host defense mechanisms. Biofilms are thought to be accountable for refractory cases of sinusitis by perpetuating local inflammation. The objective of this study was to assess the effectiveness of spray cryotherapy as a biofilm disruption agent in CRS in an in vitro model.
Recent Findings
A total of 23 patients with CRS undergoing endoscopic sinus surgery (ESS) were included. Rhinosinusal mucosa samples were harvested. Half of sample was left intact while the other half was treated with spray cryotherapy, so patients served as their own witnesses. Subsequently, they were processed to hematoxylin-eosin (HE) and toluidine blue (TB) staining and analyzed by light microscopy. Biofilms were detected in 17 of 23 patients with CRS. Staining by HE showed strong correlation with the results of TB staining protocol. The in vitro CRS study demonstrated that spray cryotherapy removed polymicrobial biofilms from the mucosa surface in 70.6% of cases and induced important structural changes in the remaining samples.
Summary
Thus far, cryotherapy has proven to be a reliable method for the disruption of microbial biofilms in CRS with nasal polyps, in vitro conditions. Spray cryotherapy could be a considerable benefit in the management of recalcitrant CRS.
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Abbreviations
- CRS :
-
chronic rhinosinusitis
- ESS :
-
endoscopic sinus surgery
- HE :
-
hematoxylin-eosin (HE) and
- TB :
-
toluidine blue
- FESS :
-
functional endoscopic sinus surgery
- CT :
-
computerized tomography
- ENT surgeon :
-
Ears-Nose-Throat surgeon
- TM :
-
Massons’ trichrome
- CLSM :
-
confocal laser scanning microscopy
- LPC :
-
lymphocytic
- PMN :
-
polymorphonuclear
- TH2 :
-
T helper 2 lymphocytes
- SEM :
-
scanning electron microscopy
- TEM :
-
transmission electron microscopy
- FISH :
-
fluorescent in situ hybridization
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Acknowledgements
This paper was published under the frame of the University of Medicine and Pharmacy Cluj-Napoca, Romania, Internal Grants 2016, project no. 4994/5/08.03.2016.
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Vlad, D., Dutu, A., Apostol, A. et al. The Effect of Spray Cryotherapy on Microbial Biofilms in Chronic Rhinosinusitis. Curr Infect Dis Rep 20, 41 (2018). https://doi.org/10.1007/s11908-018-0647-4
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DOI: https://doi.org/10.1007/s11908-018-0647-4