Please use this identifier to cite or link to this item:
|Scopus||Web of Science®||Altmetric|
|Title:||Inflammasome gene expression alterations in Staphylococcus aureus biofilm-associated chronic rhinosinusitis|
|Citation:||Rhinology, 2013; 51(4):315-322|
|Publisher:||International Rhinologic Society|
|C. Jardeleza, D. Miljkovic, L. Baker, S. Boase, N.C.W. Tan, S.A. Koblar, P. Zalewski, M. Rischmueller, S. Lester, A. Drilling, D. Jones, L.W. Tan, P.J. Wormald, S. Vreugde|
|Abstract:||BACKGROUND: The role of inflammasomes in chronic inflammation has been the subject of intense research in recent years. Chronic rhinosinusitis (CRS), a persistent inflammatory disease, continues to be investigated hoping that a clearer pathophysiologic description will guide discovery of future treatment modalities. This study investigates the role of inflammasome complexes in CRS patients with Staphylococcus aureus biofilm infection, a key culprit associated with disease severity and recalcitrance. METHODOLOGY: Sinonasal tissue samples were collected from CRS patients with (P+) and without (P-) polyps and controls. S. aureus biofilm status was obtained using fluorescence in situ hybridization and classified as biofilm positive (B+) or negative (B-). RNA was analysed using a Human Inflammasome PCR array, profiling the expression of 84 genes involved in inflammasome function. RESULTS: Sixteen samples were obtained: 5 B+P+, 5 B-P- and 6 controls. Comparing B+P+ vs. controls showed the greatest number of differentially expressed genes. In particular, Absent in Melanoma 2 (AIM2) was consistently and significantly up-regulated in the B+P+ vs. B-P- and controls. In contrast, when comparing the B-P- vs. controls, no genes showed significant changes. CONCLUSION: Our results indicate the involvement of inflammasome complexes and their signalling pathways in CRS patients with polyps and S. aureus biofilms. In particular, AIM2, activated by intracellular double-stranded DNA, is up-regulated in this group, implying that S. aureus may play a role in intracellular triggering of the inflammasome response. Studies with further patient stratification and assessing corresponding protein expression are needed to further characterize the role of inflammasomes in CRS.|
|Keywords:||Humans; Biofilms; Staphylococcus aureus; Staphylococcal Infections; Sinusitis; Rhinitis; Nasal Polyps; Chronic Disease; RNA, Messenger; Case-Control Studies; Adult; Aged; Middle Aged; Female; Male; Inflammasomes|
|Rights:||Copyright status unknown|
|Appears in Collections:||Medicine publications|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.