title: [Application of an improved tracheal intubation method during the preparation of myocardial infarction model in the mouse].
abstract: OBJECTIVE
  An improved tracheal intubation method was used in preparation of myocardial infarction model in the mouse for increasing the success rate.
  
  
  METHODS
  The mice were intubated by an improved trachea cannula through oral cavity. The left anterior thoracotomy performed. The myocardial infarction model was made by legating the left anterior descending coronary artery in mouse. The color of heart was observed, and electrocardiogram was recorded. The survival rate and pathologic change were observed after two weeks of operation.
  
  
  RESULTS
  40 myocardial infarction model mice were made by improved trachea cannula. The color of ventricles anterior wall had got madder red, and ST stages were raised on II leads of electrocardiogram in all of model mice. After two weeks, 27 mice were survival. The survival rate was 87.1% except for accidental death during operation. The heart chamber expanded and ventricular wall became thin in myocardial infarction mice by eyes. After pathological sections were stained, by HE cardiac muscle fibers ruptured or lysed. There were some of necrosis of myocardiac cells and many of infiltration of inflammatory cells.
  
  
  CONCLUSIONS
  Application of an improved tracheal intubation method simplified operation of tracheal intubation during preparation of myocardial infarction model in the mouse. The trauma was tinier than the other one, and achievement ratio of the model preparation was improved.
authors.affiliation: Key Laboratory of Cell Engineering of Guizhou Province, The Affiliated Hospital of Zunyi Medical College, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Wei
authors.forename: Li-mei
authors.initials: LM
authors.lastname: Yu
authors.forename: Li
authors.initials: L
authors.lastname: Pan
authors.forename: Shang-fu
authors.initials: SF
authors.lastname: Xu
authors.forename: Qin
authors.initials: Q
authors.lastname: Wu
mesh_terms: D000818:Animals; D004195:Disease Models, Animal; D007442:Intubation, Intratracheal / Q000379:methods*; D008297:Male; D051379:Mice; D009203:Myocardial Infarction