COX-2 expression in gastric cancer and its relationship with angiogenesis using tissue microarray.
World J Gastroenterol
; 13(25): 3466-71, 2007 Jul 07.
Article
em En
| MEDLINE
| ID: mdl-17659693
ABSTRACT
AIM:
To explore the expression and clinicopathological significance of cyclooxygenase-2 (COX-2) and microvessel density (MVD) in gastric carcinogenesis, and to investigate their roles in the invasion and the relationship between biological behaviors and prognosis of gastric cancer.METHODS:
Using Envision immunohistochemistry, COX-2 and CD34 expressions in gastric cancer tissue array were examined. MVD was counted and the relationship between the biological behaviors and prognosis was analyzed.RESULTS:
The expression of COX-2 in gastric cancer tissue was significantly higher than that in normal mucosa (c2 = 12.191, P < 0.05). The over-expression of COX-2 in gastric cancer was obviously related to metastasis and depth of invasion (c2 = 6.315, P < 0.05), but not related to the histological type and Borrmann type (c2 = 5.391 and c2 = 2.228, respectively). Moreover, MVD in gastric cancer tissues was significantly higher than that in the normal mucosa (65.49 +/- 20.64 vs 36.21 +/- 18.47, t/F = 7.53, P < 0. 05). MVD was related to the histologic type and metastasis (t/F = 3.68 and t/F = 4.214, respectively, P < 0. 05), but not related to the depth of invasion and Borrmann type (t/F = 0.583 and t/F = 0.459, respectively). MVD in COX-2-positive tissues was markedly higher compared to COX-2-negative tissues, indicating a positive correlation between COX-2 expression and MVD (t = 13.12, P < 0. 05).CONCLUSION:
Tissue microarray (TMA) is a powerful tool for rapid identification of the molecular alterations in gastric cancer. COX-2 expression, via inducing angiogenesis, may play an important role in gastric carcinogenesis. It could be served as a determinant factor for clinical prognosis and curative effect.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Gástricas
/
Análise Serial de Tecidos
/
Ciclo-Oxigenase 2
/
Neovascularização Patológica
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
World J Gastroenterol
Assunto da revista:
GASTROENTEROLOGIA
Ano de publicação:
2007
Tipo de documento:
Article
País de afiliação:
China