title: [Expression of S100B and GFAP after primary brainstem injury in rat].
abstract: OBJECTIVE
  To study the expression of S100B and glial tibrillory acidic protein (GFAP) atter primary brainstem injury in rat and discuss the changes with brainstern injury time and their mechanism in the injury.
  
  
  METHODS
  The brainstem injury animal model was established using the mechanical impacting method. The HE staining, Gless argentaffin staining and SP immunohistochemical method were applied to observe the changes of S100B and GFAP at different injury time. The immunostaining results were measured statistically with imaging analysis technology.
  
  
  RESULTS
  A large number of S100B positive cells could be seen in 30 min. Afterward, expression increased gradually with time and peaked up in 24 h, and reversed back the normal in 72h. The GFAP positive cells showed rise continually in 30 min, and reached the peak in 48 h, then started to decrease, but still higher than that in control.
  
  
  CONCLUSIONS
  The expression of S100B and GFAP is correlated with post traumatic intervals after brainstem injury in rat, and may be useful in estimation post traumatic intervals and nerve regeneration.
authors.forename: Yu-Hong
authors.initials: YH
authors.lastname: Wu
authors.forename: Hui-Jun
authors.initials: HJ
authors.lastname: Wang
authors.forename: Xin
authors.initials: X
authors.lastname: Wang
mesh_terms: D000818:Animals; D001930:Brain Injuries / Q000378:metabolism*; D001933:Brain Stem / Q000293:injuries* / Q000378:metabolism; D004195:Disease Models, Animal; D005904:Glial Fibrillary Acidic Protein / Q000378:metabolism*; D007150:Immunohistochemistry; D009414:Nerve Growth Factors; D009457:Neuroglia; D051381:Rats; D064568:S100 Calcium Binding Protein beta Subunit / Q000378:metabolism*; D009418:S100 Proteins
chemical_list: D005904:Glial Fibrillary Acidic Protein; D009414:Nerve Growth Factors; D064568:S100 Calcium Binding Protein beta Subunit; D009418:S100 Proteins; C579158:S100b protein, rat