It downregulates the gene and protein expression of COX1, 5-LOX, 12-LOX, and 15-LOX in the arachidonic acid pathway, restores the levels of abnormal metabolites such as PGE2, PGD2, LTB4, 12-HETE, 15-HETE, PGF2α, and 8-iso-PGF2α in PAH models, inhibits abnormal proliferation of PASMCs, and reverses pulmonary vascular remodeling (Song et al., 2022). The gene discussed is PTGS1; the disease is pulmonary arterial hypertension.