title: Nerve growth factor and vascular endothelial growth factor: retrospective analysis of 63 patients with salivary adenoid cystic carcinoma.
abstract: OBJECTIVE
  To detect the expression of nerve growth factor (NGF) and vascular endothelial growth factor (VEGF) in salivary adenoid cystic carcinoma (SACC) tissues, as well as to determine the correlation between growth factor expression and prognosis in SACC.
  
  
  METHODS
  Medical records of 63 patients surgically treated for SACC between January 1988 and October 2005 were reviewed. Immunohistochemistry was performed to examine the expression of NGF and VEGF in tumor tissues. Kaplan-Meier analysis and Cox's proportional hazard regression model were applied to assess predictors of survival.
  
  
  RESULTS
  NGF and VEGF were overexpressed in SACC tissues, compared with those in normal salivary tissues (P < 0.05), and the staining intensity of these two factors was stronger in groups of solid subtype, advanced TNM stage, perineural invasion and recurrence. Patients with high-expression of NGF and VEGF, solid subtype, advanced stage, perineural invasion, recurrence and extended resection alone had worse survival rates (P < 0.05).
  
  
  CONCLUSIONS
  NGF and VEGF are expressed increasingly in the tissues of SACC cases with invasion and metastasis. NGF expression and VEGF expression are independent
authors.affiliation: Department of Oral and Maxillofacial Surgery, College of Stomatology, Guangxi Medical University, Nanning, China.
authors.forename: Li
authors.initials: L
authors.lastname: Hao
authors.forename: Nong
authors.initials: N
authors.lastname: Xiao-lin
authors.forename: Chen
authors.initials: C
authors.lastname: Qi
authors.forename: Yang
authors.initials: Y
authors.lastname: Yi-ping
authors.forename: Li
authors.initials: L
authors.lastname: Jia-quan
authors.forename: Li
authors.initials: L
authors.lastname: Yan-ning
mesh_terms: D000328:Adult; D000368:Aged; D003528:Carcinoma, Adenoid Cystic / Q000473:pathology* / Q000601:surgery; D003391:Cranial Nerves / Q000473:pathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D020360:Neoadjuvant Therapy; D009361:Neoplasm Invasiveness; D009364:Neoplasm Recurrence, Local / Q000473:pathology; D009367:Neoplasm Staging; D020932:Nerve Growth Factor / Q000032:analysis*; D011379:Prognosis; D016016:Proportional Hazards Models; D012189:Retrospective Studies; D012468:Salivary Gland Neoplasms / Q000473:pathology* / Q000601:surgery; D012469:Salivary Glands / Q000473:pathology; D012470:Salivary Glands, Minor / Q000473:pathology; D015996:Survival Rate; D042461:Vascular Endothelial Growth Factor A / Q000032:analysis*; D055815:Young Adult
chemical_list: C467484:VEGFA protein, human; D042461:Vascular Endothelial Growth Factor A; D020932:Nerve Growth Factor