GDNF and stroke disorder: The increase in the GDNF did not reach the level of significance in the TEVs of stroke patients at D1, D7, and M1 compared to the controls [median × 106 (IQR × 106), D1: 7.78 (2.5–11.41) vs. 6.07 (0.8–7.39), p  =  0.212; D7: 6.97 (2.87–11.64) vs. 6.07 (0.8–7.39), p  =  0.173; M1: 5.27 (1.43–8.79) vs. 6.07 (0.8–7.39), p  =  0.651].