TNNI3 and type 2 diabetes mellitus: The results showed that compared with the Control group, the contents of serum CK-MB, cTnI, and LDH in the T2D group were significantly increased (P<0.05); Compared with the T2D group, the content of the above enzymes in the serum of mice in the T2D + SP group was significantly decreased (P<0.05) (Table 2).