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Updated: Mar 6, 2026

Microelectrode Array Recording of Sinoatrial Node Firing Rate to Identify Intrinsic Cardiac Pacemaking Defects in Mice

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Cardiac KATP channel modulation by 16Hz magnetic fields - A theoretical study.

Yuval Aharonovich, Mickey Scheinowitz, Sharon Zlochiver

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

|March 9, 2017

Summary

16Hz magnetic fields (MFs) protect the heart by increasing KATP channel opening, reducing cellular calcium. This mechanism, explored via a computational model, aligns with experimental data and suggests potential for cardiac therapy.

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Last Updated: Mar 6, 2026

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Isolation of Human Atrial Myocytes for Simultaneous Measurements of Ca2+ Transients and Membrane Currents

Isolation of Human Atrial Myocytes for Simultaneous Measurements of Ca2+ Transients and Membrane Currents

Published on: July 3, 2013

Area of Science:

Biophysics
Computational Biology
Cardiology

Background:

16Hz magnetic fields (MFs) show cardio-protective effects in diseased hearts.
The underlying mechanism for MF cardio-protection remains largely unknown.
KATP channels play a crucial role in cardiac function and are potential targets for therapeutic intervention.

Purpose of the Study:

To investigate the mechanism by which 16Hz MFs exert cardio-protective effects.
To test the hypothesis that MFs modulate KATP channel open probability.
To model the impact of MFs on intracellular calcium dynamics in cardiac cells.

Main Methods:

Utilized the Fan-Makielski Markovian KATP channel model.
Integrated the KATP channel model with a ventricular single cell model.
Simulated the effect of 16Hz and 32Hz MFs on calcium transients ([Ca2+]) under periodic pacing.

Main Results:

MF exposure, particularly at 16Hz, gradually decreased [Ca2+] by increasing KATP channel opening.
Observed a small negative shift in diastolic calcium levels.
Simulated results closely mirrored published experimental findings for 16Hz MF exposure.

Conclusions:

16Hz MF exposure enhances KATP channel open probability, leading to reduced cellular calcium load.
The developed computational model provides a framework for understanding MF bio-effects on cardiac cells.
The model can be extended to predict optimal MF parameters for future cardiac therapy devices.