Exposure to inhomogeneous static magnetic field ceases mechanical allodynia in neuropathic pain in mice

Miklós Antal, János László

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Magnetic therapy as a self-care intervention has led to the conduct of numerous human trials and animal experiments. Results concerning the analgesic efficacy of magnetic exposure, however, are inconsistent. By using a magnetic device generating an inhomogeneous static magnetic field (iSMF), here we studied how the whole-body exposure to iSMF may influence the mechanical withdrawal threshold (MWT) of the hind paw in different stages of neuropathic pain evoked by partial ligation of the sciatic nerve in mice. It was found that iSMF exposure did not prevent the decrease of MWT in the first postoperative week. A 2-week long iSMF treatment that was started just after the nerve ligation elevated MWT values to a modest extent. However, the effectiveness of a daily exposure to iSMF was much more prominent when it was applied between postoperative days 15 and 28. In this case, MWT was already noticeably increased after the first treatment and it practically reached the control values by the end of the 2-week long exposure period. The results suggest that exposure to iSMF cannot prevent the development of mechanical allodynia, but can inhibit processes that maintain the increased sensitivity to mechanical stimuli in neuropathic pain.

Original languageEnglish
Pages (from-to)438-445
Number of pages8
JournalBioelectromagnetics
Volume30
Issue number6
DOIs
Publication statusPublished - Sep 1 2009

Keywords

  • Mechanical allodynia
  • Mouse
  • Neuropathic pain
  • Partial nerve ligation
  • Static magnetic field

ASJC Scopus subject areas

  • Biophysics
  • Physiology
  • Radiology Nuclear Medicine and imaging

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