PMID- 9685685 OWN - NLM STAT- MEDLINE DCOM- 19980923 LR - 20190702 IS - 0027-5107 (Print) IS - 0027-5107 (Linking) VI - 400 IP - 1-2 DP - 1998 May 25 TI - 137Cesium-induced chromosome aberrations analyzed by fluorescence in situ hybridization: eight years follow up of the Goiania radiation accident victims. PG - 299-312 AB - The radiation accident in focus here occurred in a section of Goiania (Brazil) where more than a hundred individuals were contaminated with 137Cesium on September 1987. In order to estimate the absorbed radiation doses, initial frequencies of dicentrics and rings were determined in 129 victims [A.T. Ramalho, PhD Thesis, Subsidios a tecnica de dosimetria citogenetica gerados a partir da analise de resultados obtidos com o acidente radiologico de Goiania, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil, 1992]. We have followed some of these victims cytogenetically over the years seeking for parameters that could be used as basis for retrospective radiation dosimetry. Our data on translocation frequencies obtained by fluorescence in situ hybridization (FISH) could be directly compared to the baseline frequencies of dicentrics available for those same victims. Our results provided valuable information on how precise these estimates are. The frequencies of translocations observed years after the radiation exposure were two to three times lower than the initial dicentrics frequencies, the differences being larger at higher doses (>1 Gy). The accuracy of such dose estimates might be increased by scoring sufficient amount of cells. However, factors such as the persistence of translocation carrying lymphocytes, translocation levels not proportional to chromosome size, and inter-individual variation reduce the precision of these estimates. CI - Copyright 1998 Elsevier Science B.V. All rights reserved. FAU - Natarajan, A T AU - Natarajan AT AD - LUMC, Leiden University Medical Centrum, Department of Radiation Genetics and Chemical Mutagenesis, Wassenaarseweg 72, 2333 AL Leiden, Netherlands. natarajan@rullf2medfac.leidenuniv.nl FAU - Santos, S J AU - Santos SJ FAU - Darroudi, F AU - Darroudi F FAU - Hadjidikova, V AU - Hadjidikova V FAU - Vermeulen, S AU - Vermeulen S FAU - Chatterjee, S AU - Chatterjee S FAU - Berg, M AU - Berg M FAU - Grigorova, M AU - Grigorova M FAU - Sakamoto-Hojo, E T AU - Sakamoto-Hojo ET FAU - Granath, F AU - Granath F FAU - Ramalho, A T AU - Ramalho AT FAU - Curado, M P AU - Curado MP 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 (Cesium Radioisotopes) SB - IM MH - Brazil MH - Cells, Cultured MH - Cesium Radioisotopes/*adverse effects MH - Chromosome Aberrations/*genetics MH - Female MH - Follow-Up Studies MH - Gamma Rays/adverse effects MH - Humans MH - *In Situ Hybridization, Fluorescence MH - Lymphocytes/radiation effects MH - Male MH - *Radioactive Hazard Release MH - Radiometry MH - Retrospective Studies MH - Translocation, Genetic/radiation effects EDAT- 1998/08/01 00:00 MHDA- 1998/08/01 00:01 CRDT- 1998/08/01 00:00 PHST- 1998/08/01 00:00 [pubmed] PHST- 1998/08/01 00:01 [medline] PHST- 1998/08/01 00:00 [entrez] AID - S0027-5107(98)00021-9 [pii] AID - 10.1016/s0027-5107(98)00021-9 [doi] PST - ppublish SO - Mutat Res. 1998 May 25;400(1-2):299-312. doi: 10.1016/s0027-5107(98)00021-9.