The study investigates whether Cerebrolysin stabilizes blood-brain barrier integrity in a manner that can be monitored using serum levels of the principal tight junction proteins, e.g., occludin (OCL), claudin-5 (CLN), and zonula occludens-1 (ZO-1), or other molecules known to be involved in BBB degradation, e.g., S100B and whether it protects against hemorrhagic transformation in ischemic stroke patients after reperfusion therapy (i.e. thrombolysis and/or mechanical thrombectomy).