Article
Exhaled nitric oxide identifies the persistent eosinophilic phenotype in severe refractory asthma.
The Journal of allergy and clinical immunology - 1 Dec 2005
Silkoff Philip E, Lent Anne M, Busacker Ashley A, Katial Rohit K, Balzar Silvana, Strand Matthew, Wenzel Sally E
Abstract excerpt
BACKGROUND: The fractional concentration of exhaled nitric oxide (FENO) is increased in asthma, correlates with eosinophilic inflammation, and decreases after steroid therapy. OBJECTIVE: We sought to examine whether persistent eosinophilia would be accompanied by an increased FENO level despite s...
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