title: [Comparison of effects of 5 and 20 Hz magnetic field on cerebral ischemia in rats].
abstract: OBJECTIVE
  To compare the effects of 5 Hz and 20 Hz magnetic field on cerebral ischemia in rats.
  
  
  METHODS
  After cerebral ischemia was produced by ligation of the left general carotid artery, rats were stimulated by magnetic fields of 5 Hz and 20 Hz respectively and pathological changes in neurocytes were observed.
  
  
  RESULTS
  (1) Different pathological changes were observed in different cells; (2) The extent of damage of pyramidal cells was milder in 5 Hz magnetic field groups than those in the control group, and the effect was not remarkable in the 20 Hz group; (3) The effect on astroglia was worse in 5 Hz group than that in control and 20 Hz group.
  
  
  CONCLUSIONS
  Magnetic field stimulation influences cerebral ischemic reaction with frequency-dependency.
authors.affiliation: Institute of Space Medico-Engineering, Beijing, China.
authors.forename: L
authors.initials: L
authors.lastname: Zhao
authors.forename: D M
authors.initials: DM
authors.lastname: Zhao
authors.forename: J H
authors.initials: JH
authors.lastname: Wei
authors.forename: G D
authors.initials: GD
authors.lastname: Yan
authors.forename: Y Q
authors.initials: YQ
authors.lastname: Wang
authors.forename: Z M
authors.initials: ZM
authors.lastname: Huang
mesh_terms: D000818:Animals; D001253:Astrocytes / Q000473:pathology*; D002545:Brain Ischemia / Q000473:pathology*; D002339:Carotid Arteries / Q000601:surgery; D008026:Ligation; D008280:Magnetics / Q000009:adverse effects*; D017966:Pyramidal Cells / Q000473:pathology*; D051381:Rats