Alterations of P53, and BCL-2 protein expression in the recurrent laryngeal and pharyngeal squamous cell carcinoma
Egyptian Journal of Otolaryngology [The]. 2006; 23 (1): 23-27
em Inglês
| IMEMR
| ID: emr-150743
ABSTRACT
Identification of molecular events of the recurrent squamous cell carcinoma [SCC] of the larynx and pharynx may aid in refining treatment strategies and improving outcome. The underlying molecular events of these recurrent tumours involves alterations in the tumor suppressor genes [p53] and protooncogenes [Bc1-2]. We hypothesize that the development of these recurrent tumours involves alterations of the p53 and Bcl-2 proteins. To test this hypothesis, 15 laryngeal and pharyngeal biopsy specimens obtained from 15 patients with recurrent laryngeal or pharyngeal squamous cell carcinoma with different grades [II-IV] were immunostained for p53 and Bcl-2 protein expression. Examination of the percentage of positive cells in the normal mucosa and SCC, respectively, showed significant upregulation of p53 [0.0 +/- 0.0 Vs. 51.8 +/- 5.9; p= 0.00] and Bcl-2 protein expression [36.5 +/- 3.5 vs. 74.6 +/- 1.9; p= 0.00]. Alterations of the p53 and Bcl-2 proteins occur during the development of recurrent SCC. Additional studies are needed to confirm and extend our results:
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Índice:
IMEMR (Mediterrâneo Oriental)
Assunto principal:
Neoplasias Faríngeas
/
Tomografia Computadorizada por Raios X
/
Neoplasias Laríngeas
/
Proteína Supressora de Tumor p53
/
Cisplatino
/
Resultado do Tratamento
/
Endoscopia
/
Hospitais Universitários
Limite:
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Egypt. J. Otolaryngol.
Ano de publicação:
2006
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