Figure 5

Systemic cytokines in three groups. The levels of ET-1 and Ang II in plasma (A) were detected by ELISA. The level of ET-1 mRNA expression (B) was detected by RT-PCR. *p < 0.05. (C) There was a negative correlation between the average blood oxygen saturation and the level of Ang II in plasma. (D) There was a negative correlation between the average blood oxygen saturation and the level of ET-1 in plasma.