Objective To study the relationship between endotoxemia and interleukin-1β or tumor necrosis factorα in mice with Pseudomonas aeruginosa pneumonia.Methods BALB/c mice were randomly divided into 3 groups.Animal models with Pseudomonas aeruginosa pneumonia were established.Low dose polymyxin B was used to neutralize the toxic and immunologic effects of endotoxin.Then the plasma endotoxin levels,interleukin-1 β mRNA levels,tumor necrosis factor α mRNA levels in lungs among different groups were compared.Result...