L. paracasei FJG2337 pre-treatment significantly decreased the hepatic MDA levels in ALI mice (0.37 ± 0.10 nmol/mg prot. Vs. 0.63 ± 0.09 nmol/mg prot., p < 0.01), and enhanced the hepatic GSH (0.86 ± 0.11 U/mg prot. Vs. 0.69 ± 0.10 U/mg prot.)and CAT (5.46 ± 1.25 U/mg prot. Vs. 3.70 ± 0.58 U/mg prot.)activity (p < 0.05). Here, CAT is linked to acute respiratory distress syndrome.