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  • Title: The contribution of viral respiratory infections to the pathogenesis of airway hyperreactivity.
    Author: Busse WW.
    Journal: Chest; 1988 May; 93(5):1076-82. PubMed ID: 3282817.
    Abstract:
    From this review, it is apparent that the effects of respiratory viral infection on airway reactivity are multiple. Although virus-associated changes are many, we have at present no evidence to show that respiratory viruses cause intrinsic abnormalities in airway smooth muscle function. Rather, respiratory viruses influence bronchial smooth muscle function through a variety of other means: epithelial injury, PMN-dependent inflammation, and greater mediator release. These observations suggest that a common pathway to development of airway hyperreactivity during respiratory viral illnesses is to enhance those factors which participate in the inflammatory response. When the target of this enhanced inflammatory response becomes the airway, greater bronchial reactivity and obstruction result. Although many questions remain to be answered, we feel that future studies to evaluate the biology of respiratory virus effects on mechanisms of airway responsiveness will lead to a greater understanding of asthma pathogenesis.
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