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Updated: Mar 31, 2026
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Voltage-Dependent Potassium Current Recording on H9c2 Cardiomyocytes via the Whole-Cell Patch-Clamp Technique
Published on: November 11, 2022
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Modulation of Kv2.1 channels inactivation by curcumin
Iván A Aréchiga-Figueroa1, Mayra Delgado-Ramírez1, Rita Morán-Zendejas1
1Department of Physiology and Biophysics, Faculty of Medicine, Autonomous University of San Luis Potosí, Potosí, Mexico.
Pharmacological Reports : PR
|October 21, 2015
Summary
Curcumin inhibits voltage-dependent Kv2.1 potassium channels by altering inactivation gating. This modulation affects cellular physiology, with slow, partially reversible inhibition observed.
Area of Science:
- Pharmacology
- Molecular Biology
- Electrophysiology
Background:
- Voltage-dependent potassium channels, specifically Kv2.1, play crucial roles in cellular function.
- Curcumin, a natural compound, is investigated for its potential biological effects.
Purpose of the Study:
- To evaluate the impact of curcumin on the function of Kv2.1 potassium channels.
- To elucidate the mechanism by which curcumin interacts with Kv2.1 channels.
Main Methods:
- Whole-cell patch-clamp electrophysiology was employed.
- Kv2.1 channels were expressed in HEK293 cells for study.
Main Results:
- Curcumin demonstrated a slow and partially reversible inhibition of Kv2.1 currents.
- Curcumin accelerated the inactivation kinetics and shifted the voltage dependence of inactivation, without affecting activation.
- The inhibition by curcumin was independent of channel usage.
Conclusions:
- Curcumin inhibits Kv2.1 channels primarily by modulating inactivation gating.
- These findings suggest that curcumin's effects on Kv2.1 channels could influence cellular physiological processes.
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