ENHO and Parkinson disease: The adropin levels in the striatum were significantly diminished in PD rats (184.1 ± 5.3 pg/mg protein, Figure 4) compared to control (231.2 ± 21.9, F = 16.56, R2 =0.2659, P<0.01) and Sham groups (235.6 ± 15.6, F = 8.438, R2 = 0.4455, P<0.05).