title: Expression of osteopontin in oesophageal squamous cell carcinoma.
abstract: Osteopontin is a multifunctional 34 kDa extracellular matrix protein with a cell-binding domain. It is involved cell adhesion and cell migration and is therefore considered to influence tumorigenesis and/or metastasis. The purpose of the present study was to evaluate the clinical significance of Osteopontin expression in oesophageal squamous cell carcinoma (ESCC). In the present study, we immunohistochemically investigated the relationship between Osteopontin expression and clinicopathological factors including prognosis in surgical specimens of primary tumours in 175 patients with ESCC. Osteopontin was expressed in 48% of 175 patients. Osteopontin expression was significantly correlated with lymph node metastasis, lymphatic invasion, and stage (P=0.0015, 0.037 and 0.033, respectively). Tumours with expressing Osteopontin exhibited more lymph node metastasis, lymphatic invasion and advanced stage than the tumour with negative Osteopontin expression. Five-year survival rate was better in patients with negative Osteopontin expression than in those with positive Osteopontin expression (P=0.035). However, multivariate analysis revealed that Osteopontin expression was not an independent prognostic factor. As our findings suggest that Osteopontin may play an important role in progress of ESCC, the evaluation of Osteopontin expression is useful for predicting the malignant properties of ESCC.
authors.affiliation: Department of Surgical Oncology and Digestive Surgery, Field of Oncology, Course of Advanced Therapeutics, Graduate School of Medical and Dental Science, Kagoshima University, Sakuragaoka 8-35-1, Kagoshima 890-8520, Japan. north-y@m.kufm.kagoshima-u.ac.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Kita
authors.forename: S
authors.initials: S
authors.lastname: Natsugoe
authors.forename: H
authors.initials: H
authors.lastname: Okumura
authors.forename: M
authors.initials: M
authors.lastname: Matsumoto
authors.forename: Y
authors.initials: Y
authors.lastname: Uchikado
authors.forename: T
authors.initials: T
authors.lastname: Setoyama
authors.forename: T
authors.initials: T
authors.lastname: Owaki
authors.forename: S
authors.initials: S
authors.lastname: Ishigami
authors.forename: T
authors.initials: T
authors.lastname: Aikou
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002294:Carcinoma, Squamous Cell / Q000401:mortality / Q000473:pathology* / Q000601:surgery; D004938:Esophageal Neoplasms / Q000401:mortality / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D053495:Osteopontin; D011379:Prognosis; D012189:Retrospective Studies; D012795:Sialoglycoproteins / Q000378:metabolism*; D016019:Survival Analysis
chemical_list: C506895:SPP1 protein, human; D012795:Sialoglycoproteins; D053495:Osteopontin