title: [Usefulness of p53 oncoprotein immunohistochemistry in the follow-up of bladder carcinoma: a 5-year study].
abstract: OBJECTIVE
  Mutations in the TP53 gene are frequently detected in some types of malignant tumors (bladder, prostate, kidney, lungs, breast, colon and rectum). This study analyzed the utility of semi-quantitative determination of p53 in transitional cell carcinoma of the bladder by an immunohistochemical technique and evaluated the results at 5 years.
  
  
  RESULTS
  A prospective clinical cohort study was conducted on 81 patients. The study comprised two groups: nontumoral bladder tissue specimens from 20 patients (group I) and tissue specimens from 61 patients with bladder carcinoma (group II). In both groups the tissue specimens were obtained between November 1992 and November 1993, and during the follow-up period until July 1998. p53 expression was determined by a semi-quantitative method based on an immunohistochemical technique (NCL-p53-DO7, Novocastra).
  
  
  CONCLUSIONS
  p53 oncoprotein was not found to be useful in the characterization of carcinoma of the urinary bladder.
authors.affiliation: Cátedra de Urología, Hospital Clínico San Carlos, Madrid, España.
authors.forename: J
authors.initials: J
authors.lastname: Moreno Sierra
authors.forename: J A
authors.initials: JA
authors.lastname: López García Asenjo
authors.forename: E
authors.initials: E
authors.lastname: Redondo González
authors.forename: C
authors.initials: C
authors.lastname: Fernández Pérez
authors.forename: M L
authors.initials: ML
authors.lastname: Maestro de las Casas
authors.forename: E
authors.initials: E
authors.lastname: Blanco Jiménez
authors.forename: A
authors.initials: A
authors.lastname: Silmi Moyano
authors.forename: L
authors.initials: L
authors.lastname: Resel Estévez
mesh_terms: D000368:Aged; D014408:Biomarkers, Tumor / Q000032:analysis*; D002295:Carcinoma, Transitional Cell / Q000737:chemistry* / Q000235:genetics / Q000401:mortality / Q000473:pathology; D005500:Follow-Up Studies; D016158:Genes, p53; D006801:Humans; D015993:Life Tables; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009363:Neoplasm Proteins / Q000032:analysis*; D011379:Prognosis; D011446:Prospective Studies; D016019:Survival Analysis; D016159:Tumor Suppressor Protein p53 / Q000032:analysis*; D001749:Urinary Bladder Neoplasms / Q000737:chemistry* / Q000235:genetics / Q000401:mortality / Q000473:pathology
chemical_list: D014408:Biomarkers, Tumor; D009363:Neoplasm Proteins; D016159:Tumor Suppressor Protein p53
vernacular_title: Utilidad de la oncoproteína p53-IHQ en el seguimiento del carcinoma vesical: estudio a 5 años.