title: [Relationship between SCE points and G-banding location in patients with nasopharyngeal carcinoma].
abstract: Using a technique for simultaneous demonstration of G bands and SCE, we analyzed the SCE frequencies, cell cycle kinetics, distribution of SCE points and "hot spots" which correlate with fragile sites, proto-oncogenes locus in cultured peripheral blood lymphocytes in 20 untreated patients with nasopharyngeal carcinoma (NPC). The SCE frequencies were found to be higher in patients as compared with controls (P < 0.01). The SCE points of patients were significantly higher than those of controls in chromosome 1,2,3,4,5,7,8,12,13,14,17 (P < 0.05), indicating the chromosome instability of NPC patients. We identified 17 points as high frequency SCE hot spots, and found that 29.41% SCE hot spots fragile sites and proto-oncogenes were localized at the same bands. The distribution of SCE points and chromosome structure were discussed.
authors.affiliation: Institute of Oncology, Chengdu.
authors.forename: L
authors.initials: L
authors.lastname: Xiao
authors.forename: H
authors.initials: H
authors.lastname: Zhou
authors.forename: Y
authors.initials: Y
authors.lastname: Liu
authors.forename: X
authors.initials: X
authors.lastname: Gao
mesh_terms: D000328:Adult; D002871:Chromosome Banding; D043283:Chromosome Fragile Sites; D002873:Chromosome Fragility; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009303:Nasopharyngeal Neoplasms / Q000235:genetics*; D009857:Oncogenes; D012854:Sister Chromatid Exchange