title: [Damage effects of sleep deprivation on myocardium and its antioxygen index in rats].
abstract: OBJECTIVE
  To explore the effects of sleep deprivation (SD) on myocardium and its antioxygen index.
  
  
  METHODS
  35 Sprague Dawley rats were randomly divided into five groups: Cage control, Tank control, SD 2 d, SD 4 d and SD 6 d. The "flower pot" technique was used to establish rats sleep deprivation model followed by record of surface electrocardiogram, detection of myocardium morphology changes under microscope and transmission electron microscope and investigation of MDA content and SOD activity of myocardial mitochondria.
  
  
  RESULTS
  After sleep deprivation, heart rate increased and ECG showed ischemia of myocardium; subcellular organelles such as chromosome, endoplasmic reticulum, mitochondria, intercalated disk impaired, myofibril lysis or necrosis, and lipid peroxidation reaction effects spread widely; edema, bleeding of the microvessels and invasion of the monocytes could be seen in the lumen. The MDA level increased and SOD activity increased followed by a decreased trend.
  
  
  CONCLUSIONS
  Sleep deprivation can induce damage on myocardium, and the stress especially oxygen stress caused by SD may be the possible mechanism.
authors.affiliation: Department of Physiology, Tianjin Medical University, Tianjin 300070, China.
authors.forename: Hui-Juan
authors.initials: HJ
authors.lastname: Chai
authors.forename: Shu-Mei
authors.initials: SM
authors.lastname: Xu
mesh_terms: D000818:Animals; D004562:Electrocardiography; D005260:Female; D008297:Male; D017202:Myocardial Ischemia / Q000209:etiology* / Q000473:pathology / Q000503:physiopathology*; D018384:Oxidative Stress / Q000502:physiology; D051381:Rats; D017207:Rats, Sprague-Dawley; D012892:Sleep Deprivation / Q000150:complications*; D013482:Superoxide Dismutase / Q000378:metabolism*
chemical_list: D013482:Superoxide Dismutase