title: [Evaluation of brain dysfunction in chronic anoxic encephalopathy with evoked potentials].
abstract: OBJECTIVE
  To explore the relationship between evoked potentials (EPs) and chronic anoxic brain damage by chronic intermittent hypoxia (CIH), and provide theory evidence for diagnosis and treatment of anoxic encephalopathy.
  
  
  METHODS
  BAEP and SLSEP were recorded in rat model with CIH (hypoxia group) and rat with normoxia (normal group). Morris water maze was used to observe learning and memory ability. Immunohistochemical method was used to investigate the expression levels of caspase-3 in brain tissue.
  
  
  RESULTS
  The peak latency (PL) of wave I, III, V and the interpeak latency (IPL) of wave III - V, I - V in BAEP in hypoxia group were much longer than that of in normal group (P < 0.05). The PL of wave N1, P1 of SEP in hypoxia group were much longer than that of in normal group (P < 0.05). In the water mase test, the escape latency (EL) of hypoxia group was much longer than normal group (P < 0.01). The number of caspase-3 positive cells in hypoxia group was much larger than that of in normal group (P < 0.05). There was a positive correlation among BAEP, SLSEP, the number of caspase-3 positive neuron and EL of water mase.
  
  
  CONCLUSIONS
  The alteration of BAEP and SLSEP has an apparent correlation with chronic anoxic brain damage. This provides theory evidence for diagnosis and treatment of anoxic encephalopathy.
authors.affiliation: Department of Neurology, Union Hospital, Fujian Medical University, Fuzhou 350001, China. HH-p@163.com
authors.forename: Hua-Pin
authors.initials: HP
authors.lastname: Huang
authors.forename: Jiang-Pei
authors.initials: JP
authors.lastname: Zhao
authors.forename: Sheng-Gen
authors.initials: SG
authors.lastname: Chen
authors.forename: Chun-Hui
authors.initials: CH
authors.lastname: Che
authors.forename: An
authors.initials: A
authors.lastname: Zheng
authors.forename: Fang
authors.initials: F
authors.lastname: Jiang
mesh_terms: D000818:Animals; D001921:Brain / Q000201:enzymology / Q000473:pathology / Q000503:physiopathology*; D053148:Caspase 3 / Q000235:genetics / Q000378:metabolism; D002908:Chronic Disease; D016057:Evoked Potentials, Auditory, Brain Stem / Q000502:physiology*; D005073:Evoked Potentials, Somatosensory / Q000502:physiology*; D002534:Hypoxia, Brain / Q000503:physiopathology*; D008297:Male; D018782:Maze Learning; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: C505410:Casp3 protein, rat; D053148:Caspase 3