title: Prognostic value of immunohistochemical expression of beta-1 integrin in pancreatic carcinoma.
abstract: BACKGROUND
  Prognostically relevant factors based on the histological assessment of the resected pancreas are known. However, the knowledge of additional factors associated with the prognosis is helpful in planning the therapy for an individual patient. beta1 Integrin expression is known to have a prognostic influence in some malignant tumors. No data are, however, available on the prognostic value of beta1 integrins in pancreatic carcinoma.
  
  
  METHODS
  We investigated paraffin-embedded specimens of 19 patients undergoing surgical treatment for periampullary carcinoma and of 42 patients for ductal pancreatic carcinoma by immunohistochemistry to assess the expression pattern and the prognostic impact of beta1 integrins. Neither histomorphological parameters nor the survival time of the patients were known at the time of the investigation.
  
  
  RESULTS
  No correlation was established between histomorphological parameters and beta1 integrin expression in periampullary or ductal pancreatic carcinoma, respectively. Patients with periampullary carcinoma and beta1 integrin overexpression had a significantly poorer prognosis than patients without overexpression of beta1 integrins (median survival: 18.3 vs. 58.4 months). In ductal pancreatic carcinoma beta1 integrin expression had no influence on prognosis.
  
  
  CONCLUSIONS
  beta1 Integrins exert an influence on prognosis in periampullary carcinoma but not in ductal pancreatic carcinoma. However, further investigations in larger patient samples are required to confirm these results.
authors.affiliation: Department of Surgery (Head: Prof. Dr. Th. Junginger), Johannes Gutenberg University Mainz, Germany. boettger@allgemchir.klinik.uni-mainz.de
authors.forename: T C
authors.initials: TC
authors.lastname: Böttger
authors.forename: H
authors.initials: H
authors.lastname: Maschek
authors.forename: M
authors.initials: M
authors.lastname: Lobo
authors.forename: R G
authors.initials: RG
authors.lastname: Gottwohl
authors.forename: W
authors.initials: W
authors.lastname: Brenner
authors.forename: T
authors.initials: T
authors.lastname: Junginger
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002277:Carcinoma / Q000737:chemistry* / Q000473:pathology* / Q000556:secondary; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D007150:Immunohistochemistry; D019012:Integrin beta1 / Q000032:analysis*; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D010190:Pancreatic Neoplasms / Q000737:chemistry* / Q000473:pathology*; D011237:Predictive Value of Tests; D011379:Prognosis
chemical_list: D019012:Integrin beta1