Abstract

Aim: Asthma inflammatory phenotypes facilitate treatment, their clinical characteristics and biomarkers were analyzed. Materials & methods: A total of 176 asthmatics were divided into eosinophilic asthma (EA), neutrophilic asthma (NA), paucigranulocytic asthma and mixed-granulocytic asthma by induced sputum. Results: EA, NA and paucigranulocytic asthma patients were 65 (36.9%), 31 (17.6%) and 75 (42.6%). Sputum IL-5 and IL-13, blood IL-13, fractional exhaled nitric oxide (FeNO) were related to EA, the areas under the receiver operating characteristic curve were 0.790, 0.846, 0.828, 0.830, combined FeNO with blood IL-13 was 0.872. Sputum and blood IL-8, blood IL-17 were related to NA, their area under the receiver operating characteristic curve was 0.939, 0.844, 0.821, combined blood IL-8 with IL-17 was 0.882. Conclusion: Blood IL-13 and FeNO, blood IL-8 and IL-17 were alternative biomarkers of EA and NA, respectively.

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