title: [Impact of olfactory nerve transection on the apoptosis of mice olfactory receptor neurons].
abstract: OBJECTIVE
  To analyze the impact of olfactory nerve transection on the apoptosis of mice olfactory receptor neurons (ORN), and discuss the reliability of this experimental model.
  
  
  METHODS
  After olfactory nerve transection of mice, anterograde horseradish peroxidase (HRP) tracing was performed to confirm the completion of nerve transection. On 8 h, 2 d, 3 d and 5 d after surgery, TdT mediated deoxyuridine triphosphate-biotin nick end labelling (TUNEL) was used to observe the apoptosis of ORN, while relative semi-quantitative RT-PCR and immunohistochemistry were used to reflect the expression of olfactory marker protein (OMP, special marker of mature ORN) in olfactory epithelium.
  
  
  RESULTS
  No HRP label was observed in olfactory bulb after olfactory nerve transaction. Both TUNEL-positive and OMP-positive cells were ORN. After the surgery, TUNEL-positive cells increased remarkably and peaked on 2 d after the surgery. Meanwhile OMP mRNA in olfactory epithelium began to decrease markedly till 5 d after the surgery, and the olfactory epithelium got thinner accordingly.
  
  
  CONCLUSIONS
  This experimental model can be used reliably to sever mice olfactory nerve and manipulate simultaneous apoptosis of mice ORN.
authors.affiliation: Impact of olfactory nerve transection on the apoptosis of mice olfactory receptor neurons.
authors.forename: Mu
authors.initials: M
authors.lastname: Xian
authors.forename: Yong-Xiang
authors.initials: YX
authors.lastname: Wei
authors.forename: De-Min
authors.initials: DM
authors.lastname: Han
authors.forename: Er-Zhong
authors.initials: EZ
authors.lastname: Fan
authors.forename: Zhong-Yan
authors.initials: ZY
authors.lastname: Liu
authors.forename: Zu-Tao
authors.initials: ZT
authors.lastname: Miao
authors.forename: Cong
authors.initials: C
authors.lastname: Zhang
authors.forename: Xin
authors.initials: X
authors.lastname: Zhang
mesh_terms: D000818:Animals; D017209:Apoptosis; D003714:Denervation; D051379:Mice; D008810:Mice, Inbred C57BL; D009832:Olfactory Nerve / Q000166:cytology / Q000378:metabolism / Q000601:surgery*; D018034:Olfactory Receptor Neurons / Q000378:metabolism / Q000473:pathology*