PMID- 8569785 OWN - NLM STAT- MEDLINE DCOM- 19960305 LR - 20190702 IS - 0027-5107 (Print) IS - 0027-5107 (Linking) VI - 349 IP - 1 DP - 1996 Jan 17 TI - Detection of chromosomal aberrations by fluorescence in situ hybridization in the first three postirradiation divisions of human lymphocytes. PG - 127-35 AB - Chromosomal aberrations in human lymphocytes were analyzed by fluorescence in situ hybridization (FISH) in the first 3 postirradiation (0 and 2 Gy) divisions. Cells were grown in the presence of BrdU, collected at different sampling times (47, 70 and 91 h) and analyzed using an alphoid centromeric probe and PCR amplified DNA libraries for chromosomes 2 and 8. Following differential staining of sister chromatids, the analyzed cells were identified to be either in the first, second or third mitosis after irradiation. The frequencies of both dicentrics and fragments showed a reduction of about 50% after each cell generation, whereas translocations were more persistent. Cells within the same postirradiation division showed higher aberration frequencies when derived from later sampling times, indicating a delay in progression of aberrant cells. As a result, the frequencies for dicentrics and fragments remained rather constant at different sampling times if the cell cycle parameter was not taken into account. Thus, the average generation time of the lymphocytes had a clear effect on the obtained aberration frequencies. The described method allows the study of the persistence of chromosome damage using the FISH technique during 3 subsequent cell divisions in vitro. FAU - Boei, J J AU - Boei JJ AD - Department of Radiation Genetics and Chemical Mutagenesis, Leiden University, Netherlands. FAU - Vermeulen, S AU - Vermeulen S FAU - Natarajan, A T AU - Natarajan AT LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Mutat Res JT - Mutation research JID - 0400763 RN - 0 (DNA Probes) SB - IM MH - Base Sequence MH - Cells, Cultured MH - *Chromosome Aberrations MH - DNA Probes MH - Female MH - Humans MH - *In Situ Hybridization, Fluorescence MH - Lymphocytes/cytology/*radiation effects MH - Male MH - Mitosis MH - Molecular Sequence Data EDAT- 1996/01/17 00:00 MHDA- 1996/01/17 00:01 CRDT- 1996/01/17 00:00 PHST- 1996/01/17 00:00 [pubmed] PHST- 1996/01/17 00:01 [medline] PHST- 1996/01/17 00:00 [entrez] AID - 0027510795001719 [pii] AID - 10.1016/0027-5107(95)00171-9 [doi] PST - ppublish SO - Mutat Res. 1996 Jan 17;349(1):127-35. doi: 10.1016/0027-5107(95)00171-9.