@article{oai:nagasaki-u.repo.nii.ac.jp:00000713, author = {Hiu, Takeshi and Farzampour, Zoya and Paz, Jeanne T. and Wang, Eric Hou Jen and Badgely, Corrine and Olson, Andrew and Micheva, Kristina D. and Wang, Gordon and Lemmens, Robin and Tran, Kevin V. and Nishiyama, Yasuhiro and Liang, Xibin and Hamilton, Scott A. and O’Rourke, Nancy and Smith, Stephen J. and Huguenard, John R. and Bliss, Tonya M. and Steinberg, Gary K.}, issue = {2}, journal = {Brain}, month = {Feb}, note = {Ischaemic stroke is the leading cause of severe long-term disability yet lacks drug therapies that promote the repair phase of recovery. This repair phase of stroke occurs days to months after stroke onset and involves brain remapping and plasticity within the peri-infarct zone. Elucidating mechanisms that promote this plasticity is critical for the development of new therapeutics with a broad treatment window. Inhibiting tonic (extrasynaptic) GABA signalling during the repair phase was reported to enhance functional recovery in mice suggesting that GABA plays an important function in modulating brain repair. While tonic GABA appears to suppress brain repair after stroke, less is known about the role of phasic (synaptic) GABA during the repair phase. We observed an increase in postsynaptic phasic GABA signalling in mice within the peri-infarct cortex specific to layer 5; we found increased numbers of α1 receptor subunit-containing GABAergic synapses detected using array tomography, and an associated increased efficacy of spontaneous and miniature inhibitory postsynaptic currents in pyramidal neurons. Furthermore, we demonstrate that enhancing phasic GABA signalling using zolpidem, a Food and Drug Administration (FDA)-approved GABA-positive allosteric modulator, during the repair phase improved behavioural recovery. These data identify potentiation of phasic GABA signalling as a novel therapeutic strategy, indicate zolpidem’s potential to improve recovery, and underscore the necessity to distinguish the role of tonic and phasic GABA signalling in stroke recovery., Brain, 139(2), pp.468-480; 2016}, pages = {468--480}, title = {Enhanced phasic GABA inhibition during the repair phase of stroke: a novel therapeutic target}, volume = {139}, year = {2016} }