Fig. 5

Phenylalanine administration increased the lung injury and mortality of ARDS. a The protocol of Phenylalanine administration and ARDS model establishment b The survival rate of ARDS mice (n = 27/group) and Sham mice (n = 5/group) treated with Phenylalanine or PBS. c The levels of Phenylalanine and tyrosine in BALF of sham mice treated with Phenylalanine or PBS (n = 4–5/group). d The protein concentration in bronchoalveolar lavage fluid (BALF) (n = 3–5 /group). e The white cell counts in BALF (n = 3–5 /group). f The hematoxylin and eosin staining of lung tissue (n = 3–5 /group) Phe = Phenylalanine. Each value represents the mean ± SEM of one of the three independent experiments. Kaplan Meier Survival analysis and comparisons were performed by log-rank test