title: High-risk human papillomavirus infections and overexpression of p53 protein as prognostic indicators in transitional cell carcinoma of the urinary bladder.
abstract: Ninety Japanese patients with transitional cell carcinoma of the urinary bladder were investigated for tumor incorporation of DNA for high-risk human papillomavirus (HPV) types 16, 18, and 33 by in situ hybridization with biotinylated DNA probes. In addition, immunohistochemical analysis of p53 protein expression was performed with an antibody to p53 protein. Twenty-eight tumors were positive for HPV DNA, and multiple HPV infection was detected in 17 cases. Positive nuclear staining of cancer cells by the antibody to p53 protein was detected in 32 cases. DNA for HPV 16, 18, and/or 33 and the overexpression of p53 protein were simultaneously observed in 6 tumors by using a mirror section method. The overexpression of p53 protein was frequently detected in invasive and nonpapillary tumors (P < 0.05) and in high grade tumors (P < 0.05). In contrast, HPV infection was more common in noninvasive and papillary tumors (P < 0.01). The patients with tumors positive for HPV DNA and/or p53 antibody had a significantly worse survival rate (P < 0.05). These results suggest that HPV infection or overexpression of p53 protein may be related to tumor behavior and may indicate a relatively poor prognosis in patients with transitional cell carcinoma.
authors.affiliation: Second Department of Pathology, Kochi Medical School, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Furihata
authors.forename: K
authors.initials: K
authors.lastname: Inoue
authors.forename: Y
authors.initials: Y
authors.lastname: Ohtsuki
authors.forename: H
authors.initials: H
authors.lastname: Hashimoto
authors.forename: N
authors.initials: N
authors.lastname: Terao
authors.forename: Y
authors.initials: Y
authors.lastname: Fujita
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000032:analysis*; D002295:Carcinoma, Transitional Cell / Q000382:microbiology* / Q000401:mortality / Q000473:pathology* / Q000601:surgery; D002455:Cell Division; D002467:Cell Nucleus / Q000648:ultrastructure; D004279:DNA, Viral / Q000032:analysis; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D017403:In Situ Hybridization; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D027383:Papillomaviridae / Q000302:isolation & purification*; D011379:Prognosis; D016019:Survival Analysis; D015996:Survival Rate; D016159:Tumor Suppressor Protein p53 / Q000032:analysis* / Q000096:biosynthesis; D001749:Urinary Bladder Neoplasms / Q000097:blood* / Q000382:microbiology* / Q000401:mortality / Q000601:surgery
chemical_list: D014408:Biomarkers, Tumor; D004279:DNA, Viral; D016159:Tumor Suppressor Protein p53