Related Experiment Video
Updated: Dec 21, 2025
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Determination of the Relative Cell Surface and Total Expression of Recombinant Ion Channels Using Flow Cytometry
Published on: September 28, 2016
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Cardiac and neuronal HCN channelopathies
Ilaria Rivolta1, Anna Binda1, Alessio Masi2
1School of Medicine and Surgery, Milan Center for Neuroscience (NeuroMI), University of Milano-Bicocca, Monza, Italy.
Pflugers Archiv : European Journal of Physiology
|May 20, 2020
Summary
Dysfunctional hyperpolarization-activated cyclic nucleotide-gated (HCN) channels are linked to heart arrhythmias and neurological disorders like epilepsy and Parkinson's disease. Therapeutic modulation of HCN channels offers potential treatment strategies for these channelopathies.
Area of Science:
- Cardiovascular and Neurological Sciences
- Molecular and Cellular Biology
- Medical Genetics
Background:
- Hyperpolarization-activated cyclic nucleotide-gated (HCN) channels (HCN1-4) are crucial for cardiac and neuronal electrical activity, mediating the If/Ih current.
- Dysfunction in HCN channels is implicated in various cardiac arrhythmias and neurological conditions.
Purpose of the Study:
- To review current knowledge on HCN channel-related channelopathies in cardiac and neurological diseases.
- To explore the clinical, genetic, therapeutic, and physiopathological aspects of these conditions.
Main Methods:
- Literature review of experimental data from animal models.
- Analysis of genetic mutations identified in human patients.
- Synthesis of current research on HCN channel function and dysfunction.
Main Results:
- Altered HCN channel function, particularly HCN4, is associated with sinus node dysfunction and arrhythmias.
- Mutations in HCN1, HCN2, and HCN4 channels contribute to epilepsy pathogenesis.
- HCN channel dysfunction may play a role in neurodegenerative diseases and neuropathic pain.
Conclusions:
- HCN channels are critical regulators of cardiac and neuronal excitability.
- Understanding HCN channelopathies provides insights into disease mechanisms and potential therapeutic targets.
- Modulation of HCN channel function is a promising therapeutic avenue for diverse pathological conditions.
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