ESR1 and Sepsis: To explore the effects and mechanism of three types of fresh Rehmannia glutinosa, namely Beijing No. 3 (BJ3H), Huaizhong No. 1 (HZ1H), and Taisheng (TS) on lipopolysaccharide (LPS)-induced acute kidney injury in the sepsis (S-AKI) mice model through the estrogen receptor pathway.