PMID- 11869475 OWN - NLM STAT- MEDLINE DCOM- 20020403 LR - 20131121 IS - 0955-3002 (Print) IS - 0955-3002 (Linking) VI - 78 IP - 3 DP - 2002 Mar TI - Chromosome aberrations detected by FISH and correlation with cell survival after irradiation at various dose-rates and after bromodeoxyuridine radiosensitization. PG - 203-10 AB - PURPOSE: To determine whether measurement of chromosome aberrations by fluorescence in situ hybridization (FISH) predicts cell survival after irradiation at different dose-rates and after radiosensitization by bromodeoxyurdine (BrdU) in a lung carcinoma cell line. MATERIALS AND METHODS: The human lung carcinoma cell line SW1573 was irradiated at high dose-rate (HDR: 0.8 Gy min-1) or at pulsed low dose-rate (p-LDR: average dose-rate 1 Gy h-1) with or without radiosensitization by bromodeoxyuridine (BrdU). Cell survival was determined by clonogenic assay. Chromosome aberrations (colour junctions) were measured by whole-chromosome FISH of chromosome 2 and 18 and were scored according to the PAINT method. RESULTS: Clear radiosensitization by BrdU was observed both after HDR and p-LDR irradiation. Chromosome 18 was more radiosensitive than chromosome 2. There was a good correlation between induction of colour junctions and cell survival both after HDR and p-LDR irradiation and after radiosensitization by BrdU. CONCLUSIONS: Determination of chromosome aberrations by FISH can predict cell survival after different dose-rates and after radiosensitization by BrdU FAU - Castro Kreder, N AU - Castro Kreder N AD - Academic Medical Center, University of Amsterdam, Department of Radiotherapy, PO BOX 22700, 1100 DE Amsterdam, The Netherlands. N.Castro@amc.uva.nl FAU - Van Bree, C AU - Van Bree C FAU - Franken, N A P AU - Franken NA FAU - Haveman, J AU - Haveman J LA - eng PT - Journal Article PL - England TA - Int J Radiat Biol JT - International journal of radiation biology JID - 8809243 RN - G34N38R2N1 (Bromodeoxyuridine) SB - IM MH - Bromodeoxyuridine/pharmacology MH - Cell Survival/drug effects/*genetics/*radiation effects MH - Chromosome Aberrations/drug effects/*radiation effects MH - Dose-Response Relationship, Radiation MH - Humans MH - In Situ Hybridization, Fluorescence MH - Radiation Tolerance/drug effects MH - Tumor Cells, Cultured MH - Tumor Stem Cell Assay EDAT- 2002/03/01 10:00 MHDA- 2002/04/04 10:01 CRDT- 2002/03/01 10:00 PHST- 2002/03/01 10:00 [pubmed] PHST- 2002/04/04 10:01 [medline] PHST- 2002/03/01 10:00 [entrez] AID - 10.1080/09553000110104074 [doi] PST - ppublish SO - Int J Radiat Biol. 2002 Mar;78(3):203-10. doi: 10.1080/09553000110104074.