• Neuroscience · Apr 2018

    Comparative Study

    Quantitative Comparison Of Vesicular Glutamate Transporters in rat Deep Cerebellar Nuclei.

    • Haian Mao, Salah Hamodeh, and Fahad Sultan.
    • Department of Cognitive Neurology, HIH for Clinical Brain Research, Otfried-Müller-Str. 27, 72076 Tübingen, Germany.
    • Neuroscience. 2018 Apr 15; 376: 152-161.

    AbstractThe excitatory synapses of the rat deep cerebellar nuclei (DCN) were quantitatively analyzed by vesicular glutamate transporter 1 and 2 (vGluT1 and vGluT2) immunolabeling. We calculated the number and sizes of the labeled boutons and compared them between lateral/dentate nucleus (LN/DN), posterior interposed nucleus (PIN), anterior interposed nucleus (AIN), and medial nucleus (MN). The density of vGluT1+ boutons differs significantly within these nuclei. In contrast, the vGluT2+ bouton density is more similar between different nuclei. The phylogenetically newer DCN (LN/DN and PIN) have a 39% higher density of vGluT1+ boutons than the phylogenetically older DCN (AIN and MN). The volume of vGluT1+ boutons does not differ between the DCN, however the average volume of vGluT2+ boutons is larger in MN. In summary, our current results confirm and extend our previous findings showing that the increase in dendritic and axonal wiring in phylogenetically newer DCN is associated with an increase in vGluT1+ bouton density.Copyright © 2018 IBRO. Published by Elsevier Ltd. All rights reserved.

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