Effects of Intermediate-frequency Magnetic Fields on Isolated Perfused Rat Small Arteries

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  • KAYANO Isao
    Kawasaki University of Medical Welfare, Faculty of Health Science and Technology, Department of Medical Engineering
  • MOCHIZUKI Seiichi
    Kawasaki University of Medical Welfare, Faculty of Health Science and Technology, Department of Medical Engineering
  • OGASAWARA Yasuo
    Kawasaki University of Medical Welfare, Faculty of Health Science and Technology, Department of Medical Engineering

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Other Title
  • 中間周波磁界曝露によるラット小動脈血管径への影響評価
  • チュウカンシュウハ ジカイ バクロ ニ ヨル ラット ショウドウミャク ケッカンケイ エ ノ エイキョウ ヒョウカ

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Abstract

As induction heating (IH) equipments are getting widely used, the intermediate-frequency magnetic fields emitted by these equipments have been attracting much attention especially from health and safety viewpoints. However, studies on microcirculation are scarce. Here, we aimed at evaluating possible effects of the magnetic field (24 kHz) emitted by an IH on isolated perfused small arteries. Mesenteric arteries (346 ± 30 μm) of Wistar rats (n = 12 for both exposure and control groups) were isolated and perfused with a vessel perfusion system (0.02 mL/min, 90 mmHg). A table-top type IH was located 250 mm apart from a vessel. Each vessel was then exposed to a magnetic field of 7.8 μT for 10 min. Inner and outer diameters were measured during and after exposure. Insignificant decreasing trends (< 1%) of vessel diameters were noticed; however, no statistically significant changes were observed compared with the control group.

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