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Urokinase-type plasminogen activator receptor in gastric cancer: tissue expression and prognostic role.

Abstract：

:The urokinase-type plasminogen activator (UPA) and its inhibitor PAI-1 are thought to play an important part in gastric cancer (GC) invasion and metastasis. Little is known about the behavior and prognostic impact of the receptor for UPA (UPAR). The aims of the present study were: (1) to measure UPAR, UPA and PAI-1 levels in GC and in non-malignant tissue distant from the tumor (NORM); (2) to evaluate their relationship with histomorphological parameters; and (3) to determine their prognostic value. UPAR, UPA and PAI-1 levels were determined by ELISA in GC and NORM samples from 20 patients with GC undergoing surgery. The GC was also examined in terms of the presence (n = 10) or absence (n = 10) of metastasis, differentiation (five differentiated, 15 undifferentiated) and histotype. Survival was analysed using life table analysis. UPAR, UPA and PAI-1 were significantly higher in GC vs NORM, in the presence of metastasis (UPAR, UPA) and in undifferentiated GC (UPAR, PAI-1). UPAR significantly correlated with UPA and PAI-1. Low levels of UPAR (P = 0.04), UPA (P = 0.007) and PAI-1 (P = 0.02) were associated with a better survival. Our results demonstrate a sharp increase in UPAR in GC and suggest a prognostic role for it. The concomitant activation of UPAR, UPA and PAI-1 in GC confirm the important role of the plasminogen activator system in the process of invasion and metastasis.

journal_name

Clin Exp Metastasis

journal_title

Clinical & experimental metastasis

authors

Plebani M,Herszènyi L,Carraro P,De Paoli M,Roveroni G,Cardin R,Tulassay Z,Naccarato R,Farinati F

doi

10.1023/a:1018454305889

subject

Has Abstract

pub_date

1997-07-01 00:00:00

pages

418-25

issue

4

eissn

0262-0898

issn

1573-7276

journal_volume

15

pub_type

临床试验,杂志文章

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