MMP9 and stroke disorder: Although factors such as matrix metalloproteinase-2 (MMP-2), matrix metalloproteinase-9 (MMP-9), tissue inhibitor of matrix metalloproteinase 1 (TIMP-1), Hepatocyte growth factor (HGF-alpha), monocyte chemo-attractant protein 1 (MCP-1) are increased after ischemic stroke the most important seems to be VEGF and its receptor which are increased in the periphery of the ischemic zone at 3 hours after stroke [10,11].