Zhang P. et al. (2023) combined the joint analysis of intestinal flora and bile acid metabolism and found that the ethanol extract of PL was able to effectively improve the bile acid level in rats with acute myocardial infarction by increasing the expression of cholesterol 7 alpha-hydroxylase (CYP7A1) and restoring the diversity of intestinal flora. The gene discussed is CYP7A1; the disease is acute myocardial infarction.