Static Magnetic Field Effect on Cardiovascular Regulation: A Review.
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Date
2014-03-11
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Abstract
Mounting evidence suggests that environmental and occupational magnetic fields affect
cardiovascular system. In this review, supported by original hemodynamic recordings -
direct experimental evidence of the effect - static magnetic field (SMF) effects on arterial
baroreflex cardiovascular control mechanism have been summarized. Local exposure of
120 - 350 mT SMF to sinocarotid baroreceptors in rabbits and healthy volunteers exerted
a stimulatory effect on arterial baroreflex - normalized arterial blood pressure in
hypertensive and hypotensive conditions, significantly increased microcirculation, heart
rate variability, arterial baroreflex sensitivity and sodium nitroprusside (spontaneous nitric
oxide donor) microcirculatory vasodilatory effect. The improvement of the vasodilator
responsiveness to nitric oxide by baroreceptor stimulation suggested to be a new
mechanism in baroreflex physiology with potential implementation in a spectrum of
cardiovascular diseases where endothelial dysfunction and sympathovagal imbalance
that results from a loss of baroreflex control over autonomic activity increases the risk of
morbidity and mortality substantially. The modulation of the baroreflex-mediated
autonomic cardiovascular control is a new concept for understanding environmental
magnetic fields effect on cardiovascular system and an effective strategy to prevent their
potential public health hazards.
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Keywords
Baroreceptor, baroreflex sensitivity, heart rate variability, Ca2+ channel, microcirculation, nitric oxide
Citation
Gmitrov Juraj. Static Magnetic Field Effect on Cardiovascular Regulation: A Review. British Journal of Medicine and Medical Research. 2014 Mar; 4(8): 1612-1627.