Leukotriene-Receptor Expression on Nasal Mucosal Inflammatory Cells in Aspirin-Sensitive Rhinosinusitis

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Abstract
Patients with asthma who have aspirin sensitivity have greater cysteinyl leukotriene production and greater airway hyperresponsiveness to the effects of inhaled cysteinyl leukotrienes than their aspirin-tolerant counterparts. We hypothesized that the latter effect reflects elevated expression of the cysteinyl leukotriene receptor CysLT1 on inflammatory cells in the target organ and that its expression is down-regulated by aspirin desensitization.