Serum Interleukin-5 Levels in a Case with Allergic Granulomatous Angiitis.

Abstract
A 50-year-old woman with allergic granulomatous angiitis (AGA) presented with an elevated serum interleukin-5 (IL-5) level upon admission to a hospital. Administration of prednisolone showed marked improvement of asthmatic symptoms, reduced eosinophil counts of peripheral blood, and normalized serum IL-5 levels. This is the first report describing an elevated serum level of IL-5 in AGA. The present findings suggest that IL-5 is involved in the pathogenesis of AGA.

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