Modulation of Zebrafish Heart Rate by Alternating Magnetic Fields With Frequencies Close to Heart Rhythm

IF 3 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Journal of Electromagnetics RF and Microwaves in Medicine and Biology Pub Date : 2024-03-13 DOI:10.1109/JERM.2024.3397557
Viacheslav V. Krylov;Daniil A. Sizov;Alexander S. Machikhin;Anastasia V. Guryleva;Vladimir Tchougounov;Alexander B. Burlakov
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Abstract

Extremely low-frequency magnetic fields (ELF-MF) up to 100 μT exhibit impacts on physiological processes, including heart function. The mechanisms underlying the influence of these fields on fish heart rates remain insufficiently explored. We assumed that the direct impact of ELF-MF with a frequency close to the heart rate could entrain oscillatory processes responsible for autonomously maintaining heart rhythm in zebrafish embryos. Embryos' heart rates ranged from 1.44 to 3 Hz depending on age, and ELF-MF with frequencies precisely matched, 10% higher, or lower than the heart rate were applied. Additionally, embryos experienced ELF-MF with amplitudes varying by an order of magnitude. Almost all tested ELF-MF induced an increased heart rate effect. This effect was the most pronounced when the exposure occurred earlier during ontogenesis. Fields with frequencies close to the heart rate did not entrain cardiac contractions in zebrafish embryos. A significant negative correlation between heart rate increase and ELF-MF frequency was observed for ELF-MF with amplitudes of 1.98–3.2 μT and 46.8 μT but not 30 μT. Probable molecular mechanisms underlying these effects are discussed in terms of magnetic influence on radical pairs within biochemical oscillating processes.
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频率接近心律的交变磁场对斑马鱼心率的调节
高达 100 μT 的极低频磁场(ELF-MF)会对包括心脏功能在内的生理过程产生影响。这些磁场对鱼类心率的影响机制仍未得到充分探讨。我们假定,频率接近心率的 ELF-MF 可直接影响斑马鱼胚胎中负责自主维持心律的振荡过程。胚胎的心率范围为 1.44 至 3 赫兹(取决于年龄),施加的 ELF-MF 频率与心率精确匹配、比心率高 10%或更低。此外,胚胎经历的 ELF-MF 振幅相差一个数量级。几乎所有测试的 ELF-MF 都会引起心率加快效应。这种效应在胚胎发育早期最为明显。频率接近心率的场并不能诱导斑马鱼胚胎的心脏收缩。振幅为 1.98-3.2 μT 和 46.8 μT 的 ELF-MF 和振幅为 30 μT 的 ELF-MF 的心率增加与 ELF-MF 频率之间存在明显的负相关。从磁场对生化振荡过程中自由基对的影响角度,讨论了这些效应的可能分子机制。
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来源期刊
CiteScore
5.80
自引率
9.40%
发文量
58
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2024 Index IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology Vol. 8 Front Cover Table of Contents IEEE Journal of Electromagnetics, RF, and Microwaves in Medicine and Biology About this Journal IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology Publication Information
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