In a study of PD model rats created by 6‐OHDA injection to the SNpc, modified Golgi‐Cox staining revealed a decrease in spine density in the dopamine‐denervated NAc.65 We examined drebrin immunoreactive dots (putative dendritic spines) in the NAc of PD model rats created by 6‐OHDA injection to the MFB. Here, DBN1 is linked to Parkinson disease.