“…In the light of our results, treatment with BM-MSCs caused insignificant increase in the number of positive cells for survivin expression. This increment is in agreement with Okazaki et al [79] and it could be imputed to the ability of MSCs to enhance neurogenesis and inhibit apoptosis through their secreted BDNF as documented by Ye et al [72] . Moreover, Kim et al [80] reported that grafted MSCs attenuate dopaminergic neuronal loss through their antiapoptotic effects.…”