BDNF and stroke disorder: AMPH administration during poststroke recovery in a transient MCAO rat stroke model leads to an increase in the levels of axonal fiber and white matter growth (ipsilateral side), neurofilament (ipsilateral and contralateral side), synaptophysin (ipsilateral side), matrix metalloproteinase 2 activity (ipsilateral side cortex), and mRNA for BDNF (ipsilateral side cortex) (Liu et al., 2011).