The decrease in renal α-klotho has also been shown in several other animal models, such as renal ischemia-reperfusion injury [16], the db/db mouse model of diabetes [17], the unilateral ureteral ligation (UUO) model [18], and the cisplatin-induced AKI model [19], which indicates that the kidney was the main source of α-klotho. The gene discussed is KL; the disease is acute kidney injury.