[In situ nucleic acid detection of HBV X gene in extrahepatic biliary tract carcinomas and its clinicopathological significance].
Zhonghua Wai Ke Za Zhi
; 42(2): 88-91, 2004 Jan 22.
Article
en Zh
| MEDLINE
| ID: mdl-15009988
ABSTRACT
OBJECTIVE:
To detect the expression of HBV X gene (HBx mRNA) in extrahepatic biliary tract carcinomas and the adjacent non-cancerous tissues, and to analyzed the relationship between HBV infection and incidence of biliary tract carcinomas, thereby to elucidate the possible role of HBx in the carcinogenesis of biliary tract.METHODS:
The plasmid pSPX46 was digested by appropriate restriction enzyme. HBx fragment was obtained through gel extraction kit. The digoxigenin-labeled DNA probes for HBx mRNA were prepared by a random prime technique. The expression of HBx mRNA was detected in formalin-fixed- paraffin-embedded specimens from 71 cases of biliary tract carcinomas and 39 specimens of non-cancerous tissues adjacent to cancer by in situ hybridization. The correlations between HBx mRNA expression and clinicopathological parameters were statistically analysed in 71 cases of biliary duct carcinomas.RESULTS:
Forty-three of 71 malignant specimens had detectable HBx mRNA expression with a positive rate being 61%. Only 7 of 39 specimens of non-cancerous tissues adjacent to cancer had weak HBx mRNA expression, with a positive rate being 18%, and all these positive signals were found in the hyperplastic biliary epithelium. No significant correlation was found between HBx mRNA expression and clinicopathological parameters, but a strong positive correlation was found between HBx mRNA and protein expression.CONCLUSION:
There is a high frequency of HBx mRNA expression in extrahepatic biliary tract carcinomas. HBV infection and its gene integration might play a role to certain extent in the development of biliary tract carcinomas.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Neoplasias del Sistema Biliar
/
Transactivadores
/
Conductos Biliares Extrahepáticos
Tipo de estudio:
Diagnostic_studies
Límite:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
Zh
Revista:
Zhonghua Wai Ke Za Zhi
Año:
2004
Tipo del documento:
Article
País de afiliación:
China