Research Article

The Effects of Gas Humidification with High-Flow Nasal Cannula on Cultured Human Airway Epithelial Cells

Figure 5

Proinflammatory mediator concentration in apical surface wash fluid from Calu-3 monolayers exposed to one of three levels of relative humidity: <20% (dry), 69% (noninterventional comparator), and >90% (HFNC). Secretion of interleukin (IL)-6 (5A) and IL-8 (5B) in the dry group was greater than the noninterventional comparator group and the HFNC groups at 8 hours ( 𝑃 < 0 . 0 0 1 ), with no difference between the noninterventional comparator group and the HFNC groups ( 𝑃 > 0 . 0 5 ) and no difference between any groups at 4 hours ( 𝑃 > 0 . 0 5 ). Data are mean ± SEM. *Group effect ( 𝑃 < 0 . 0 5 ). §Time effect ( 𝑃 < 0 . 0 5 ).
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