Please use this identifier to cite or link to this item: https://observatorio.fm.usp.br/handle/OPI/4138
Title: Bone: the final frontier for Staphylococcus aureus penetration in chronic rhinosinusitis
Authors: PEZATO, RogerioBOTTURA, LucianoSANTOS, Rodrigo de PaulaVOEGELS, Richard LouisBACHI, Andre Luis LacerdaGREGORIO, Luis Carlos
Citation: JOURNAL OF OTOLARYNGOLOGY-HEAD & NECK SURGERY, v.42, article ID 45, 5p, 2013
Abstract: The superantigenic properties of Staphylococcus aureus have been implicated in increasing the inflammatory process in airway diseases. Local formation of IgE antibodies against staphylococcal enterotoxins by secondary lymphoid tissue in nasal polyps has been demonstrated. Staphylococcus aureus is known to colonize the nasal mucosa, and has been found invading the nasal submucosa and intracellularly. Objective: To evaluate the limits of Staphylococcus aureus invasion in the upper airway. Material and methods: Inferior turbinate samples from 3 patients without sinus disease, 6 ethmoid samples from patients with chronic rhinosinusitis with nasal polyposis, and 6 ethmoid samples from patients with chronic rhinosinusitis without nasal polyposis were studied. A fluorescein-labeled PNA probe against Staphylococcus aureus was used to test for the presence of the bacterium in bone (after decalcification) and mucosa. Results: We found Staphylococcus aureus invading the nasal submucosa in patients with nasal polyposis, but no cases of Staphylococcus aureus positivity in bone. In conclusion, we cannot support the hypothesis of nasal bone as a reservoir for Staphylococcus aureus, releasing massive amounts of staphylococcal enterotoxins and eliciting an inflammatory reaction, as occurs with the nasal mucosa.
Appears in Collections:

Artigos e Materiais de Revistas Científicas - FM/MOF
Departamento de Otorrinolaringologia e Oftalmologia - FM/MOF

Artigos e Materiais de Revistas Científicas - HC/ICHC
Instituto Central - HC/ICHC

Artigos e Materiais de Revistas Científicas - LIM/32
LIM/32 - Laboratório de Otorrinolaringologia


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