Assessing the role of GLUK5 and GLUK6 at hippocampal mossy fiber synapses.

ABSTRACT: It has been suggested recently that presynaptic kainate receptors (KARs) are involved in short-term and long-term synaptic plasticity at hippocampal mossy fiber synapses. Using genetic deletion and pharmacology, we here assess the role of GLU(K5) and GLU(K6) in synaptic plasticity at hippocampal mossy fiber synapses. We found that the kainate-induced facilitation was completely abolished in the GLU(K6)-/- mice, whereas it was unaffected in the GLU(K5)-/-. Consistent with this finding, synaptic facilitation was reduced in the GLU(K6)(-/-) and was normal in the GLU(K5)-/-. In agreement with these results and ruling out any compensatory effects in the genetic deletion models, application of the GLU(K5)-specific antagonist LY382884 [(3S,4aR,6S,8aR)-6-(4-carboxyphenyl)methyl-1,2,3,4,4a,5,6,7,8,

SUBMITTER: Breustedt J 

PROVIDER: S-EPMC6730189 | biostudies-literature | 2004 Nov

REPOSITORIES: biostudies-literature