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Gulshat Badel

Role of HCN Channels in Regulation of Synaptic Plasticity at Early Postnatal Medial Perforant Path

Universität Rostock, 2014

Abstract: HCN channel blocker ZD7288 depressed synaptic transmission at medial perforant path (MPP) synapses. Low-frequency stimulation (LFS) delivered to these fibers resulted in enhanced LTD after ZD7288 in P9-15 rats, but not in P30-60 rats. Hence, HCN channel activation during neuronal activity may compromise the propensity of LTD at these synapses. Results obtained with L-NAME iterated the effect of HCN channel inhibition on LTD, suggesting that retrograde signaling with NO might play a major role in the linkage between postsynaptic NMDAR activation and presynaptic HCN channel function.

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