[Abstract] Objective To investigate the effect and possible mechanism of cell cycle-dependent kinase (Cdk)5 inhibitor Roscovitine on 1-methyl4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced pathological changes in brain regions associated with Parkinson’ s disease (PD) model mice. Methods The effect of Roscovitine on the relative expression levels of P25 and Cdk5 proteins was detected by Western blotting in MPP