title: Determination of DNA ploidy and ABH antigen reactivity in both frozen and formalin-fixed bladder tumor tissue.
abstract: In a prospective series of patients with transitional-cell bladder carcinomas, DNA ploidy and ABH antigen reactivity were determined in both frozen tissue and formalin-fixed paraffin blocks. ABH antigen measurement in frozen tissue was hampered by methodological problems, especially insufficient morphology, which made quantification difficult. In only 38/55 (69%) cases was the same ABH reactivity found. The knowledge of secretor status was not helpful in the interpretation of these results. In 53/59 (90%) cases the same DNA ploidy was achieved, resulting in good correlation between flow cytometric DNA measurements in formalin-fixed and frozen tissue. The deviations occurred mainly in cases exhibiting a tetraploid DNA profile. DNA assessments using image cytometry on imprints of fresh tissue was a rapid and reliable method in our hands, with identical results being obtained in 32/36 (89%) cases.
authors.affiliation: Department of Urology, Uppsala University, Sweden.
authors.forename: P U
authors.initials: PU
authors.lastname: Malmström
authors.forename: J
authors.initials: J
authors.lastname: Vasko
authors.forename: K
authors.initials: K
authors.lastname: Wester
authors.forename: C
authors.initials: C
authors.lastname: Busch
mesh_terms: D000017:ABO Blood-Group System; D002295:Carcinoma, Transitional Cell / Q000097:blood* / Q000453:epidemiology / Q000235:genetics*; D004273:DNA, Neoplasm / Q000235:genetics*; D006801:Humans; D007124:Immunoenzyme Techniques; D011446:Prospective Studies; D001743:Urinary Bladder / Q000737:chemistry; D001749:Urinary Bladder Neoplasms / Q000097:blood* / Q000453:epidemiology / Q000235:genetics*
chemical_list: D000017:ABO Blood-Group System; D004273:DNA, Neoplasm