Association Between Blood Eosinophils and Neutrophils With Clinical Features in Adult-Onset Asthma
Association Between Blood Eosinophils and Neutrophils With Clinical Features in Adult-Onset Asthma
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DOI:
10.1016/j.jaip.2022.11.025
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发表时间:
2023-03-07
影响因子:
9.4
通讯作者:
Ilmarinen,Pinja
中科院分区:
文献类型:
--
作者:
Flinkman,Ella;Vahatalo,Iida;Ilmarinen,Pinja
BackgroundAsthma is a disease that can be separated into different phenotypes and endotypes based on the clinical characteristics and the molecular mechanisms of the condition, respectively.ObjectiveThe aim of this study is to assess the association between blood eosinophil and neutrophil counts with clinical and molecular features in patients with adult-onset asthma.MethodsBlood eosinophil and neutrophil counts were measured from 203 patients who took part in the Seinäjoki Adult Asthma Study and attended the 12-year follow-up visit. The patients were then divided into four groups (paucigranulocytic (n = 108), neutrophilic (n = 60), eosinophilic (n = 21) and mixed granulocytic (n = 14)) according to eosinophil and neutrophil levels. The cut-off values used to define the groups were 0.30×109·L−1for blood eosinophils and 4.4×109·L−1for blood neutrophils.ResultsNeutrophilic group had highest BMI, was dispensed the highest doses of inhaled corticosteroids during the 12-year follow-up and made most unplanned respiratory visits. Neutrophilic, eosinophilic and mixed granulocytic groups had more severe asthma compared to paucigranulocytic group. Neutrophilic and eosinophilic groups were associated with higher dispensed antibiotics. Eosinophilic group had more nasal polyps, more suspected sinusitis, greater decline in lung function, and increased levels of periostin, fraction of exhaled nitric oxide and immunoglobulin E. Neutrophilic group had increased high-sensitivity C-reactive protein, matrix metalloproteinase-9, interleukin-6, leptin and soluble urokinase plasminogen activator receptor levels. Mixed granulocytic group showed increased resistin levels together with neutrophilic group.ConclusionsIn addition to blood eosinophil, also blood neutrophil counts reflect the underlying inflammatory pattern and indicate important differences in asthma clinical features and outcomes.