title: Regional differences in bromodeoxyuridine uptake, expression of Ki-67 protein, and nucleolar organizer region counts in glioblastoma multiforme.
abstract: To investigate intratumoral differences in indices of tumor cell proliferation, we measured the bromodeoxyuridine labeling index (BrdUrd LI), the Ki-67 protein proliferating cell indices (PCIs) determined by monoclonal antibody MIB 1 in microwave-processed paraffin sections (MIB 1 PCI) and in some cases by monoclonal antibody in frozen sections (Ki-67 PCI), and counts of argyrophilic nucleolar organizer regions (AgNORs) in 20 glioblastomas. In the most actively proliferating areas, MIB 1 and Ki-67 PCIs correlated well with the BrdUrd LI and with each other, while AgNOR counts correlated less strongly with these indices. In less active areas, the MIB 1 PCI and BrdUrd LI changed concomitantly from one area to another within a tumor except in areas of pseudopalisading with necrosis; in these areas the BrdUrd LI decreased significantly compared with neighboring tumor tissue, while the MIB 1 PCI did not. There was very little staining of gemistocytic nuclei with either anti-BrdUrd or MIB 1 monoclonal antibodies; this supports the concept that gemistocytes are mainly quiescent cells. AgNORs in all of the above-mentioned areas varied from tumor to tumor, which suggests that they may indicate some cellular activity other than proliferation. The close correlation between the BrdUrd LI and Ki-67 protein PCIs in corresponding regions of glioblastomas suggests that MIB 1 staining of microwave-processed paraffin sections can be used to evaluate the growth potential of individual glioblastomas and possibly of other gliomas as well.
authors.affiliation: Department of Neurological Surgery, School of Medicine, University of California, San Francisco 94143.
authors.forename: K
authors.initials: K
authors.lastname: Onda
authors.forename: R L
authors.initials: RL
authors.lastname: Davis
authors.forename: C B
authors.initials: CB
authors.lastname: Wilson
authors.forename: T
authors.initials: T
authors.lastname: Hoshino
mesh_terms: D000328:Adult; D000368:Aged; D001932:Brain Neoplasms / Q000378:metabolism* / Q000473:pathology / Q000648:ultrastructure*; D001973:Bromodeoxyuridine / Q000493:pharmacokinetics*; D005260:Female; D005909:Glioblastoma / Q000378:metabolism* / Q000473:pathology / Q000648:ultrastructure*; D006801:Humans; D019394:Ki-67 Antigen; D008297:Male; D008875:Middle Aged; D009363:Neoplasm Proteins / Q000378:metabolism*; D009687:Nuclear Proteins / Q000378:metabolism*; D009697:Nucleolus Organizer Region / Q000648:ultrastructure*
chemical_list: D019394:Ki-67 Antigen; D009363:Neoplasm Proteins; D009687:Nuclear Proteins; D001973:Bromodeoxyuridine