Key result
Single HCN channels from rat hippocampal CA1 pyramidal cells exhibited an apparent conductance of 9.7 pS, which was reduced by ZD7288 and CsCl, while 8Br-cAMP increased open probability and open times.
This study characterizes the single-channel properties of native neuronal HCN channels, providing baseline biophysical data that may help distinguish homomeric and heteromeric expression in neuropathological conditions like epilepsy.
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Baseline rat hippocampal HCN metrics; leaves open subtype distinction in epilepsy models.
Simeone et al. (2005) studied this question. ZD7288, CsCl, and 8Br-cAMP was evaluated on Single channel properties (conductance, open probability, latencies, open states). Single HCN channels from rat hippocampal CA1 pyramidal cells exhibited an apparent conductance of 9.7 pS, which was reduced by ZD7288 and CsCl, while 8Br-cAMP increased open probability and open times.
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