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        "resumen" => "<span id="abst0005" class="elsevierStyleSection elsevierViewall"><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">El ant&#237;geno nuclear de proliferaci&#243;n celular &#40;PCNA&#41; o ciclina es una prote&#237;na nuclear de 36 kD que est&#225; involucrada en la replicaci&#243;n del ADN celular y es considerada como un &#237;ndice de proliferaci&#243;n en algunas neoplasias&#46; Este trabajo analiza la expresi&#243;n de PCNA en 24 carcinomas primarios de pulm&#243;n de c&#233;lulas no peque&#241;as empleando el anticuerpo monoclonal PC-10 en material procesado en parafina&#46; Encontramos importantes variaciones inter e intratumorales en la expresi&#243;n de PCNA&#46; No observamos relaci&#243;n estad&#237;sticamente significativa entre la cantidad de PCNA expresada y el tama&#241;o y localizaci&#243;n tumoral&#44; &#237;ndice mit&#243;sico&#44; tipo histol&#243;gico del tumor y edad del paciente&#46; Estudiamos la supervivencia en los pacientes en 19 casos con el prop&#243;sito de correlacionarla con la expresi&#243;n de PCNA&#44; obteniendo una relaci&#243;n estad&#237;sticamente significativa &#40;r<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0&#44;47&#59; p &#60; 0&#44;05&#41; entre la cantidad de PCNA expresada y la supervivencia en los casos incluidos en nuestro estudio&#44; pero al establecer un sistema de graduaci&#243;n de la expresi&#243;n de PCNA en tres grados -leve &#40;0-25&#37;&#41;&#44; moderado &#40;25-50&#37;&#41; e intenso &#40;&#62; 50&#37;&#41;- no encontramos diferencias estad&#237;sticamente significativas entre las supervivencias ni un valor pron&#243;stico en la graduaci&#243;n de PCNA&#46;</p></span>"
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        "resumen" => "<span id="abst0010" class="elsevierStyleSection elsevierViewall"><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Proliferating cell nuclear antigen &#40;PCNA&#41; is a 36kD nuclear protein involved in DNA replication that is believed to provide an indication of proliferation in some neoplasms&#46; This study analyzes PCNA expression in 24 cases of primary non-small cell lung cancer using monoclonal PC-10 antibodies in paraffin embedded material&#46; We found significant inter and intra-tumoral variations in PCNA expression&#44; and no statistically significant relation between the amount of PCNA expression and the size and location of tumors&#44; index of mitosis&#44; histological tumor type or patient age&#46; We found a statistically significant relation &#40;r<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0&#46;47&#59; p &#60; 0&#46;05&#41; between survival and amount of PCNA expression in a sample of 19 cases&#44; but no statistically significant differences in survival related to whether PCNA expression was slight &#40;0-25&#41;&#44; moderate &#40;25&#37;-50&#37;&#41; or high &#40;&#62; 50&#37;&#41;&#44; and no prognostic value for degree of PCNA expression&#46;</p></span>"
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Vol. 32. Issue 3.
Pages 127-131 (March 1996)
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Vol. 32. Issue 3.
Pages 127-131 (March 1996)
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Análisis de la expresión del antígeno nuclear de proliferación celular (PCNA) en 24 carcinomas primarios de pulmón de células no pequeñas y correlación con la supervivencia
Analysis of proliferating cell nuclear antigen expression in 24 cases of primary non-small cell lung cancer and correlation with survival
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V.M. Castellano1, T. Sotelo, C. Ballestín
Departamento de Anatomía Patológica. Hospital Universitario 12 de Octubre. Madrid
A. López-Encuentra*, G. Varela**
* Servicio de Neumología. Hospital Universitario 12 de Octubre. Madrid
** Servicio de Cirugía Torácica. Hospital Universitario 12 de Octubre. Madrid
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El antígeno nuclear de proliferación celular (PCNA) o ciclina es una proteína nuclear de 36 kD que está involucrada en la replicación del ADN celular y es considerada como un índice de proliferación en algunas neoplasias. Este trabajo analiza la expresión de PCNA en 24 carcinomas primarios de pulmón de células no pequeñas empleando el anticuerpo monoclonal PC-10 en material procesado en parafina. Encontramos importantes variaciones inter e intratumorales en la expresión de PCNA. No observamos relación estadísticamente significativa entre la cantidad de PCNA expresada y el tamaño y localización tumoral, índice mitósico, tipo histológico del tumor y edad del paciente. Estudiamos la supervivencia en los pacientes en 19 casos con el propósito de correlacionarla con la expresión de PCNA, obteniendo una relación estadísticamente significativa (r=0,47; p < 0,05) entre la cantidad de PCNA expresada y la supervivencia en los casos incluidos en nuestro estudio, pero al establecer un sistema de graduación de la expresión de PCNA en tres grados -leve (0-25%), moderado (25-50%) e intenso (> 50%)- no encontramos diferencias estadísticamente significativas entre las supervivencias ni un valor pronóstico en la graduación de PCNA.

Palabras clave:
Cáncer de pulmón
Antígeno nuclear de proliferación celular (PCNA)
Ciclina
Supervivencia
Factor pronóstico
Immunohistoquímica

Proliferating cell nuclear antigen (PCNA) is a 36kD nuclear protein involved in DNA replication that is believed to provide an indication of proliferation in some neoplasms. This study analyzes PCNA expression in 24 cases of primary non-small cell lung cancer using monoclonal PC-10 antibodies in paraffin embedded material. We found significant inter and intra-tumoral variations in PCNA expression, and no statistically significant relation between the amount of PCNA expression and the size and location of tumors, index of mitosis, histological tumor type or patient age. We found a statistically significant relation (r=0.47; p < 0.05) between survival and amount of PCNA expression in a sample of 19 cases, but no statistically significant differences in survival related to whether PCNA expression was slight (0-25), moderate (25%-50%) or high (> 50%), and no prognostic value for degree of PCNA expression.

Key words:
Lung cancer
Proliferating cell nuclear antigen
PCNA
Cyclin
Survival
Prognostic factor
Immunohistochemistry
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Copyright © 1996. Sociedad Española de Neumología y Cirugía Torácica
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