The contents of SP A, MDA,TP and the activity of Ela in BALF increased dramatically. However, the relative content(%TP)of SP A decreased significantly with pronounced correlation between its change and the changes of Cst and ST min , as well as Ela.

• BALF中SP－A、MDA、TP含量及Ela活性明显升高，但SPA－A的相对含量（%25TP）降低，且与Ela、Cst和STmin的变化相关显著。