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Vol. 58. Issue 8.
Pages 347-351 (January 2007)
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Vol. 58. Issue 8.
Pages 347-351 (January 2007)
Relationship Between FAK and P53 Expression in Squamous Cell Carcinomas of the Larynx
Relación entre la expresión de FAK y p53 en los carcinomas epidermoides de laringe
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Juan Pablo Rodrigo
Corresponding author
juanpablo.rodrigo@sespa.princast.es

Correspondence: Servicio de Otorrinolaringología. Hospital Universitario Central de Asturias. Celestino Villamil, s/n. 33006 Oviedo. Asturias. Spain.
, Rubén Cabanillas, Pablo Secades, Marta Canel, María Dolores Chiara, Carlos Suárez
Servicio de Otorrinolaringología. Hospital Universitario Central de Asturias. IUOPA. Universidad de Oviedo. Oviedo. Asturias. Spain
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Introduction and objectives

FAK expression is frequently elevated in human cancers, including head and neck squamous cell carcinomas. However, the regulation of FAK expression is poorly understood. The aim of this study is to establish the possible role of the p53 tumour suppressor gene in the regulation of FAK expression in squamous cell carcinomas of the larynx.

Material and method

The expression of FAK and p53 proteins were studied using immunohistochemistry in 102 samples from surgically-treated squamous cell carcinomas of the supraglottic larynx (with postoperative radiotherapy in 49 cases).

Results

All the cases showed some degree of FAK expression, which was moderate to intense in 60 cases (59%). Also 60 cases showed positive p53 expression (>10% of tumour cells with nuclear staining). No relationship was observed between p53 positivity and FAK expression (P=.54). In addition, none of these proteins presented association with the prognosis of the patients.

Conclusions

Our results suggests that p53 activity does not correlate with FAK expression in squamous cell carcinomas of the larynx.

Key words:
Squamous cell carcinoma
Larynx
FAK
p53
Introducción y objetivos

La expresión de la proteína FAK frecuentemente se encuentra elevada en múltiples tipos de cánceres, como los carcinomas epidermoides de cabeza y cuello. Sin embargo, los mecanismos que regulan la expresión de dicha proteína son poco conocidos. Nuestro objetivo es analizar si el supresor tumoral p53 está implicado en la regulación de la expresión de FAK en los carcinomas epidermoides de laringe.

Material y método

Se estudia mediante inmunohistoquímica la expresión de las proteínas FAK y p53 en una muestra de 102 carcinomas epidermoides de laringe supraglótica tratados quirúrgicamente (con radioterapia postoperatoria en 49 casos).

Resultados

Todos los tumores presentaban algún grado de expresión de FAK, que era moderada o intensa en 60 (59%) de los casos. También en 60 casos hubo positividad de p53 (> 10% de las células tumorales con tinción nuclear). No se halló relación entre la positividad de p53 y la expresión de FAK (p=0,54). La expresión de cualquiera de las dos proteínas no mostró relación con el pronóstico de los pacientes.

Conclusiones

Nuestros resultados indican que la actividad de p53 no se relaciona con la expresión de FAK en los carcinomas epidermoides de laringe.

Palabras clave:
Carcinoma epidermoide
Laringe
FAK
p53

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