MPO and Sepsis: Using one of most widely used murine models of ALI, the CLP, a recent study demonstrated that autophagy induction by rapamycin was able to improve the survival rate, histological scores, lung wet/dry ratios, PaO2/FiO2, and inflammatory cytokine and myeloperoxidase (MPO) levels in BALF, suggesting a protective role of autophagy in sepsis-induced ALI/ARDS [120].