Carcinoma de la vesícula biliar: expresión de productos de los oncogenes C-MYC y RAS-P-21 / Carcinoma of gallblader: expression of products of C-MYC and RAS-P-21 oncogene
Rev. méd. Chile
;
122(7): 754-9, jul. 1994. tab, ilus
Article
Dans Espagnol
| LILACS
| ID: lil-136918
RESUMO
The expression of c-myc and p-ras-21 oncogenes was studied using an immunohistochemical method with monoclonal antibodies in 126 samples of gallbladder carcinoma (103 primary tumors and 23 metastatic lesions). Twenty five gallbladder samples without tumor evidence were used as controls. C-myc oncoprotein was positive in one control sample and p-ras-21 oncoprotein was negative in all. Among primary carcinomas c-myc was positive in 9 (9 per cent) and 4 (4 per cent); among metastatic carcinomas c-myc was positive in 6 (26 per cent, p=0.03 vs primary carcinoma) and p-ras-21 in 11 (48 per cent, p <0.001 vs primary carcinoma). There was a non significant association between c-myc and p-ras-21 expression and degree of histological differentiation and levelñ of tumoral infiltration. It is concliuded that c-myc and p-ras-21 oncoprotein expression is observed in less than 10 per cent of primary gallbladder carcinomas and that this expression is significantly higher in metastatic cells
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Indice:
LILAS (Amériques)
Sujet Principal:
Techniques in vitro
/
Carcinomes
/
Expression des gènes
/
Protéine oncogène p21(ras)
/
Protéines proto-oncogènes c-myc
/
Protéines oncogènes
/
Tumeurs de la vésicule biliaire
Limites du sujet:
Humains
langue:
Espagnol
Texte intégral:
Rev. méd. Chile
Thème du journal:
Médicament
Année:
1994
Type:
Article
/
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