BDNF and Sepsis: To investigate the function of BDNF in sepsis‐induced ALI in vitro, the alveolar epithelial cell line MLE‐12 was treated with the BDNF mimic 7,8‐dihydroxyflavone (7,8‐DHF) (Ahuja et al., 2022; Bollen et al., 2013; Liu et al., 2016; Xue et al., 2021) (16 μM or 32 μM) for 1 h and then incubated with or without LPS (10 mg/L) for 24 h.