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Inicio Actas Urológicas Españolas Expresión de cdx2 en lesiones de vejiga urinaria y uretra
Journal Information
Vol. 28. Issue 2.
Pages 101-105 (January 2004)
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Vol. 28. Issue 2.
Pages 101-105 (January 2004)
Expresión de cdx2 en lesiones de vejiga urinaria y uretra
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1854
J.A. Ortiz-rer1, I. Antón badiola, P. San miguelfraile, C. álvarez álvarez, B. Iglesias rodríguez
1. Servicio de Patología
E. Zungri-telo*
* Servicio de Urología. Centro Médico POVISA. Vigo (Pontevedra)
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Resumen
Expresión de cdx2 en lesiones de vejiga urinaria y uretra

Fundamento: CDX1 Y CDX2 son factores de transcripción esenciales para el desarrollo y mantenimiento de lacélula epitelial intestinal. Se ha descrito la expresión de CDX2 en el epitelio intestinal normal y metaplásico, y en adenocarcinomas originados en el mismo. Hemos analizado la expresión de dicho marcador en lesiones reactivas y tumorales de vejiga, uretra y uraco

Método

Se determinó CDX2 mediante inmunohistoquímica sobre tejido incluido en parafina, con el método de estreptavidina marcada-biotina (LSAB2, Dako) utilizando un anticuerpo monoclonal (CDX2- 88, BioGenex)

Resultados

Se observó expresión de CDX2 en la cistitis glandularis de tipo intestinal, metaplasia intestinal de vejiga, adenocarcinoma vesical, carcinoma mucinoso urotelial de uretra prostática y carcinoma mucinoso de uraco. Fueron negativos para CDX2 el urotelio y epitelio glandular prostático normales, nidos de Von Brunn, cistitis glandularis típica, adenosis glandular y carcinoma transicional

Conclusiones

Aquellas lesiones, benignas y malignas, con morfología de célula entérica presentan positividad para CDX2. La expresión de este marcador no es, por tanto, órgano-específica y únicamente se relaciona con un fenotipo celular. La positividad para CDX2 en un adenocarcinoma puede ser compatible con un origen en el tracto urinario o en el uraco

Palabras clave:
Proteína Cdx-2
Proteínas del homeodominio
Epitelio intestinal
Metaplasia
Vejiga
Uretra
Inmunohistoquímica
Abstract
Expression of cdx2 in lesions of urinary bladder and urethra

Background:CDX1 and CDX2 are transcription factors involved in the development and maintenance of the intestinal epithelial cell. Expression of CDX2 has been reported in normal and metaplastic intestinal epithelium, and in those adenocarcinomas with that cellular origin. We have analized the expression of this marker in reactive and tumoral lesions arising in urinary bladder, urethra and urachus

Method

CDX2 was investigated through immunohistochemistry on paraffin-embedded tissue, using the labelled streptavidin-biotin method (LSAB2, Dako) with a monoclonal antibody (CDX2-88, BioGenex)

Results

Expression of CDX2 was observed in intestinal-type cistitis glandularis, intestinal metaplasia of urinary bladder, bladder adenocarcinoma, mucinous urothelial-type carcinoma of prostatic urethra and urachal mucinous carcinoma. CDX2 was not detected in normal urothelium and prostatic glandular epithelium, Von Brunn nests, typical-type cistitis glandularis, glandular adenosis and transitional carcinoma

Conclusion

Lesions, both benign and malignant, with enteric-cell morphological features show positivity for CDX2. Expression of this marker is not organ-specific but is just related to a cellular phenotype. Reactivity for CDX2 in an adenocarcinoma can be consistent with an origin in urinary tract or urachus

Key words:
Cdx-2 protein
Homeodomain proteins
Intestinal epithelium
Metaplasia
Bladder
Urethra
Immunohistochemistry

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