Meanwhile, plasma H 2S concentration was decreased and the activity of CSE (according to H 2S production) in lung tissues decreased in shunting rats. CSEmRNA expression by pulmonary arteries was significantly suppressed.

• 分流组大鼠的血浆H2 S含量及肺组织CSE活性 (肺组织H2 S产出率 )明显低于对照组 ,肺动脉mRNA表达明显降低。