"Subarachnoid pharmacotherapy for maximizing recovery after cortical ischemic stroke"
Journal of experimental stroke & translational medicine 2010 ; 3(2):13-21
- Subarachnoid pharmacotherapy, a novel therapeutic strategy for the treatment of focal neocortical epilepsy, could be adapted for the treatment of stroke. Specifically, subarachnoid pharmacotherapy could be adapted to maximize functional recovery after cortical ischemic stroke. The key element of this strategy is a device implanted chronically in the subarachnoid space overlaying the cortical infarct and penumbra. The triple functions of this device are: (a) periodic transmeningeal drug delivery to promote neuroregeneration in the penumbra without causing damage by penetration into the cortical tissue, (b) periodic removal of accumulated inflammatory cells and molecules from the drug delivery site to prevent clogging in the drug delivery system, and (c) periodic detection of local EEG signals to monitor the efficacy of the subarachnoid drug treatment and to help to optimize drug delivery/fluid removal parameters. All functions of the device are regulated by a connected control implant. Preliminary safety studies in bonnet macaques not subjected to experimental stroke showed that the subarachnoid device is well tolerated and can perform its triple functions for months without causing apparent neurological or behavioral abnormality. Relevant efficacy tests in animal models of cortical ischemic stroke are needed to predict the clinical potential of subarachnoid pharmacotherapy for post-stroke recovery.
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