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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

GABA concentrations in the striatum following repetitive cerebral ischemia.

GABAergic neurons in the striatum are very sensitive to the effects of ischemia. The progressive decline in striatal GABA following transient forebrain ischemia in gerbils may be secondary to either a decreased production or an increase in reuptake mechanisms or both. The current experiment was designed to evaluate release of GABA by stimulation with K+ or inhibition of its uptake with nipecotic acid or their combination (K+ nipecotic) after repetitive forebrain ischemia in gerbils by in-vivo microdialysis on Days 1, 3, 5, and 14 following the insult. Infusion of nipecotic acid or potassium chloride, resulted in a significant increase in extracellular GABA. This response was significantly decreased in the post-ischemic animals. The synergistic effect of increased GABA concentrations by the infusion of nipecotic acid + potassium chloride seem in the controls was not evident in the post-ischemic animals. In conclusion, though there is a reduction in the extracellular GABA concentrations in the first week following an ischemic insult, restorative mechanisms are operative in the second week as seen by the increasing GABA concentrations.[1]


  1. GABA concentrations in the striatum following repetitive cerebral ischemia. Mainprize, T., Shuaib, A., Ijaz, S., Kanthan, R., Miyashita, H., Kalra, J. Neurochem. Res. (1995) [Pubmed]
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