Research Article

Pirfenidone Inhibits Hypoxic Pulmonary Hypertension through the NADPH/ROS/p38 Pathway in Adventitial Fibroblasts in the Pulmonary Artery

Figure 7

The role of PFD on HPAAFs in hypoxia. In the human pulmonary artery adventitial fibroblasts, PFD reduced hypoxia-induced cell proliferation, migration, and differentiation through the NOX4/ROS/P38 signaling pathway. Meanwhile, there was no direct cross effect between NOX4 and Rac1. PFD: pirfenidone; ROS: reactive oxygen species.