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포도구균장독소에 의한 기도상피세포에서의 Rhinovirus 복제 증가

Increase of Rhinovirus Replication in Airway Epithelial Cells byStaphylococcal Enterotoxin A and B

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참고문헌

키워드

주제분류이비인후과학

초록

Abstract

Background and Objectives:The toxins generated from Staphylococcus aureus, Staphylococcal enterotoxin A (SEA) and B(SEB), are reported to have an important role in the pathogenesis of chronic rhinosinusitis. As a basic step for elucidating the pathophysiologicresponses of the nasal mucosa of chronic rhinosinusitis associated with rhinovirus infection, this study investigated theeffect of SEA and SEB on rhinovirus infection in A549 cells. Materials and Method:The effect of SEA and SEB on the rhinovirus-induced changes in intercellular adhesion molecule-1 (ICAM-1) expression was assessed by flow cytometry. The effect ofstaphylococcal toxins on the rhinovirus-induced cytokine secretion was measured by ELISA. The effect of the replication of rhinovirusin the cells was examined by viral culture with subsequent determination of viral titer. Results:ICAM-1 expression wasincreased in the rhinovirus infection group. Cytokine secretion was also increased in the rhinovirus infection group. But there wasno additional increase due to staphylococcal toxins regarding the ICAM-1 expression and cytokine secretions. Staphylococcal toxinsincreased viral titer in proportion to toxin concentrations. Conclusion:SEA and SEB increased rhinoviral replication in airwayepithelial cells. This result shows that airway epithelial cells with chronic rhinosinusitis are more favorable environments for rhinovirusinfection. (Korean J Otolaryngol 2006;49:1071-6)

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