Abstract:
BACKGROUND AND PURPOSE:The majority of pharmacological agents for stroke were developed based on the assumption that neurological deficits will be reduced upon the successful interruption of biochemical mechanisms leading to neuronal death. Despite significant evidence of preclinical efficacy, none of these agents succeeded. They either failed to demonstrate efficacy in the clinic or their development was halted for safety, strategic, or commercial reasons. SUMMARY OF REVIEW:This "neuroprotection strategy" has focused primarily on targets in the neurotoxic environment that occurs under ischemic conditions. In many cases, these agents were designed to tackle events that are known to start almost immediately after onset of ischemia, which is far before a realistic therapeutic time window opens for most, if not all, patients with stroke. In other instances, they were evaluated beyond a realistic timeframe in which one could expect significant salvageable tissue or penumbra to exist. Surprisingly, most of these agents were not evaluated in conjunction with strategies for improving perfusion to the affected tissue, indicating an overoptimistic assumption that neuroprotection alone could be sufficient to halt injury caused by an abrupt interruption of brain blood flow. CONCLUSIONS:We provide a constructive translational medicine perspective about how one could improve the drug development process with the hope that the probability for success can increase in our quest to establish a novel therapy for stroke.
journal_name
Strokejournal_title
Strokeauthors
Chavez JC,Hurko O,Barone FC,Feuerstein GZdoi
10.1161/STROKEAHA.109.559914subject
Has Abstractpub_date
2009-10-01 00:00:00pages
e558-63issue
10eissn
0039-2499issn
1524-4628pii
STROKEAHA.109.559914journal_volume
40pub_type
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