title: [Observation on alpha-SMA during Erigeron Breviscapus (Vant) Hand-Mazz obstructs the evolution of carcinogenesis of golden hamster cheek pouch].
abstract: OBJECTIVE
  To observe dynamically that Erigeron Breviscapus (Vant) Hand-Mazz (HEr) affects the expression of alpha-smooth muscle actin (alpha-SMA). To discuss the probable mechanism of obstructing leukoplakia carcinogenesis of this medicine.
  
  
  METHODS
  120 golden hamsters were randomly divided into model group (48), HEr group (48) and control group (6). HEr was applied to obstruct the evolution of carcinogenesis of golden hamster cheek pouch. Immunohistochemistry was used to detect the expression level of alpha-SMA with cheek pouch specimen that besmears DMBA in 4-9 weeks. Results were compared with model group.
  
  
  RESULTS
  Vessel density dyed with alpha-SMA continuously of HEr group was 65.76 significantly higher than that of model group 42.12 (P<0.001). High classification cases in HEr group were much more than model group when cases were divided into five groups as follow: 100%, 50%, 20%, 10%, 3% (P<0.01).
  
  
  CONCLUSIONS
  HEr can raise the expression level of alpha-SMA exactly during the evolution of leukoplakia carcinogenesis of golden hamster, which shows that this medicine obstructs carcinogenesis by keeping the normal physiological function of vascular myoepithelial cell and integrity of vascular basement membrane.
authors.affiliation: Department of Oral Medicine, Ninth People's Hospital, School of Stomotology, Shanghai Second Medical University. Shanghai 200011, China.
authors.forename: C T
authors.initials: CT
authors.lastname: Zhou
authors.forename: S L
authors.initials: SL
authors.lastname: Zhang
authors.forename: R Y
authors.initials: RY
authors.lastname: Ding
authors.forename: L
authors.initials: L
authors.lastname: Hua
authors.forename: W J
authors.initials: WJ
authors.lastname: Zhong