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Memorias del Instituto de Investigaciones en Ciencias de la Salud (Mem. Inst. Investig. Cienc. Salud) is the official publication of the Institute of Research in Health Sciences (IICS) of the National University of Asunción (UNA), Paraguay. It publishes original scientific contributions in clinical medicine, biomedical research, microbiology, molecular biology, dentistry, nursing, nutrition, public health, health biotechnology, genetics, biochemistry, and related disciplines. Founded in 1983, the journal adopted its current name in 2002 and has been published exclusively online since 2015, incorporating XML article dissemination as of 2024. Since 2023, it operates under a continuous publication model. The journal accepts manuscripts in Spanish and English as original research articles, reviews, case studies, and brief communications. All content is available in open access, free of charge for authors and readers, under the Creative Commons Attribution 4.0 International License, in accordance with the Budapest Open Access Initiative (BOAI). It is indexed in BVS, SciELO Paraguay, HINARI, LILACS, DOAJ, Latindex, MIAR, Dialnet, CiteFactor, Google Scholar, LivRe, BASE, EBSCO, and Web of Science – SciELO Citation Index. The journal is funded by IICS-UNA, supports the OAI-PMH protocol for metadata harvesting, and uses the LOCKSS system for digital preservation of its contents.

 
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Expresión de la proteína p53 en esófago de Barrett y adenocarcinoma esofágico. Experiencia del Departamento de Patología, IICS

Authors

  • Soledad Campos
  • Susy Figueredo Thiel
  • Elena Kasamatsu

Keywords:

p53, esófago de Barret, adenocarcinoma, inmunohistoquímica

Abstract

El esófago de Barrett constituye el cambio del epitelio escamoso a columnar
(metaplasia) secundaria al reflujo gastro-esofágico. El significado clínico es la
predisposición a úlceras, sangrado y desarrollo de adenocarcinoma. Se desconoce el
periodo necesario para el desarrollo de displasia y la transición a carcinoma, lo que hace
necesario contar con indicadores de la progresión neoplásica o de transformación
maligna. La proteína p53 participa del control del ciclo celular, síntesis y reparación del
ADN y muerte celular programada. Numerosos trabajos describen la acumulación de la
proteína p53 en lesiones displásicas de esófago sugiriendo que esta alteración participaría
en la tumorgénesis esofágica. Este trabajo tiene como objetivo determinar, la expresión
de p53, por inmunohistoquímica en 58 biopsias de esófago de las cuales, 42
correspondieron a esófago de Barrett y 16 a adenocarcinoma esofágico describiendo la
frecuencia de expresión de p53, asi como las características clínicas, endoscópicas e
histológicas de las lesiones. La expresión de p53 fue positivo en 15/42 (36%) casos de
esófago de Barrett, la frecuencia fue mayor en los que presentaban esofagitis y en los
casos con displasia que en los que no presentaban estas características. Por otro lado,
p53 fue positivo en 9/16 (56%) de los adenocarcinomas. El estudio por inmunohistoquímica de p53 en estas dos entidades podría utilizarse como un indicador que contribuya al mejor manejo de la enfermedad en estos pacientes.

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References

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Published

2011-12-01

Issue

Section

Original Articles

How to Cite

Campos, S., Figueredo Thiel, S., & Kasamatsu, E. (2011). Expresión de la proteína p53 en esófago de Barrett y adenocarcinoma esofágico. Experiencia del Departamento de Patología, IICS. Memorias Del Instituto De Investigaciones En Ciencias De La Salud, 9(2). https://revistascientificas.una.py/index.php/RIIC/article/view/1716