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Immunohistochemistry analysis of proteins related with apoptosis as prognostic factor in epidermoid carcinomaof penis / Análisis inmunohistoquímico de proteínas relacionadas con la apoptosis como factor pronóstico en el carcinoma epidermoide de pene
Novais, P. C; Paula, A. A. P. de; Reis, R. B; Barione, D. F; Franqueiro, A. G; Rodrigues Jr, A. A; Lizarte, F. S. N; Carvalho, C. A. M. de; Tirapelli, D. P. C; Peria, F. M; Saggioro, F. P; Tucci Jr, S; Cologna, A. J; Martins, A. C. P; Tirapelli, L. F.
  • Novais, P. C; University of São Paulo. Ribeirão Preto Faculty of Medicine. Department of Surgery and Anatomy. BR
  • Paula, A. A. P. de; Association of Cancer Combat of Goiás. Goiânia. BR
  • Reis, R. B; University of São Paulo. Ribeirão Preto Faculty of Medicine. Department of Surgery and Anatomy. BR
  • Barione, D. F; University of São Paulo. Ribeirão Preto Faculty of Medicine. Department of Surgery and Anatomy. BR
  • Franqueiro, A. G; Association of Cancer Combat of Goiás. Goiânia. BR
  • Rodrigues Jr, A. A; University of São Paulo. Ribeirão Preto Faculty of Medicine. Department of Surgery and Anatomy. BR
  • Lizarte, F. S. N; University of São Paulo. Ribeirão Preto Faculty of Medicine. Department of Surgery and Anatomy. BR
  • Carvalho, C. A. M. de; University of São Paulo. Ribeirão Preto Faculty of Medicine. Department of Surgery and Anatomy. BR
  • Tirapelli, D. P. C; University of São Paulo. Ribeirão Preto Faculty of Medicine. Department of Surgery and Anatomy. BR
  • Peria, F. M; University of São Paulo. Ribeirão Preto Faculty of Medicine. Department of Clinical Medicine. BR
  • Saggioro, F. P; University of São Paulo. Ribeirão Preto Faculty of Medicine. Department of Pathology. BR
  • Tucci Jr, S; University of São Paulo. Ribeirão Preto Faculty of Medicine. Department of Surgery and Anatomy. BR
  • Cologna, A. J; University of São Paulo. Ribeirão Preto Faculty of Medicine. Department of Surgery and Anatomy. BR
  • Martins, A. C. P; University of São Paulo. Ribeirão Preto Faculty of Medicine. Department of Surgery and Anatomy. BR
  • Tirapelli, L. F; University of São Paulo. Ribeirão Preto Faculty of Medicine. Department of Surgery and Anatomy. BR
Int. j. morphol ; 30(3): 1029-1034, Sept. 2012. ilus
Artigo em Inglês | LILACS | ID: lil-665520
ABSTRACT
The aim was to analyze the protein expression of apoptotic genes caspase-3, caspase-8 and bcl-2 with the immunohistochemistry technique, correlating with tumor grade (I, II and III) and with the patient survival in order to understand the basic mechanism of tumoral transformation. The immunohistochemistry reactions on 50 samples of squamous cell carcinoma were carried out with the avidin-biotin immunoperoxidase method and antigen recovery. The analyses were made using the graduation method "in crosses" (0 to 4 crosses - no stain to more than 75 percent of positives cells) and in categories (low, intermediate, high) of the cytoplasm immunoreactivity of the epidermoid penile carcinoma cells. It was observed a statistically significant difference when the expression of caspase-3 were compared with the grades I and II of the tumor (p=0.0010) and when comparing the patient survival with the grades I and II of the tumor (p=0.0212). The protein bcl-2 was more expressed than caspase-3 and caspase-8 proteins, suggesting that the apoptotic rate in this carcinoma is low. The higher expression of the anti-apoptotic protein bcl-2 suggests a higher preservation of the tumoral cells...
RESUMEN
El objetivo fue analizar la expresión de las proteínas de genes de apoptosis caspasa-3, caspasa-8 y Bcl-2-con la técnica de inmunohistoquímica, en correlación con el grado tumoral (I, II y III) y la supervivencia del paciente con el fin de comprender el mecanismo básico de la transformación tumoral. Se analizaron las reacciones inmunohistoquímicas sobre 50 muestras de carcinoma de células escamosas mediante el método de la inmunoperoxidasa avidina-biotina y la recuperación de antígeno. Los análisis se realizaron utilizando el método de graduación "en cruces" (0 a 4 cruces - no tinción a más del 75 por ciento de las células positivas) y en categorías (baja, media, alta) de la inmunorreactividad citoplasmática de las células de carcinoma epidermoide de pene. Se observó una diferencia estadísticamente significativa cuando la expresión de la caspasa-3 se comparó con los grados I y II del tumor (p = 0,0010) y cuando se comparan la supervivencia de los pacientes con los grados I y II del tumor (p = 0,0212). La proteína bcl-2 se expresa más que la caspasa-3 y caspasa-8, lo que sugiere que la tasa de apoptosis en este carcinoma es baja. La mayor expresión de la proteína anti-apoptótica bcl-2 sugiere una mayor preservación de las células tumorales...
Assuntos


Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Neoplasias Penianas / Carcinoma de Células Escamosas Tipo de estudo: Estudo prognóstico Limite: Humanos / Masculino Idioma: Inglês Revista: Int. j. morphol Assunto da revista: Anatomia Ano de publicação: 2012 Tipo de documento: Artigo País de afiliação: Brasil Instituição/País de afiliação: Association of Cancer Combat of Goiás/BR / University of São Paulo/BR

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Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Neoplasias Penianas / Carcinoma de Células Escamosas Tipo de estudo: Estudo prognóstico Limite: Humanos / Masculino Idioma: Inglês Revista: Int. j. morphol Assunto da revista: Anatomia Ano de publicação: 2012 Tipo de documento: Artigo País de afiliação: Brasil Instituição/País de afiliação: Association of Cancer Combat of Goiás/BR / University of São Paulo/BR