PMID- 19861730 OWN - NLM STAT- MEDLINE DCOM- 20100105 LR - 20091028 IS - 2384-8553 (Electronic) IS - 0021-2571 (Linking) VI - 45 IP - 3 DP - 2009 TI - The micronucleus assay in radiation accidents. PG - 260-4 AB - The cytokinesis-block micronucleus assay in peripheral blood lymphocytes is a standardised and validated technique for biodosimetry. Automated scoring of micronuclei allows large scale applications as in population triage in case of radiation accidents or malevolent use of radioactive sources. The dose detection limit (95% confidence) of the micronucleus assay for individual dose assessment is restricted to 0.2 Gy but can be decreased to 0.1 Gy by scoring centromeres in micronuclei using fluorescence in situ hybridization (FISH). In the past the micronucleus assay was applied for a number of large scale biomonitoring studies of nuclear power plant workers and hospital workers. Baseline micronucleus frequencies depend strongly on age and gender. The assay was also already used for biodosimetry of radiation accidents. In a multiple endpoint biodosimetry study for dose assessment of a worker exposed accidentally in 2003 to X-rays, a good agreement was obtained between dose estimates resulting from the micronucleus assay, the scoring of dicentrics and translocations. Automated scoring of micronuclei in combination with centromere signals, allowing systematic biodosimetry of exposed populations, remains a challenge for the future. FAU - Thierens, Hubert AU - Thierens H AD - Department of Basic Medical Sciences, Faculty of Medicine, University of Ghent, Belgium. hubert.thierens@ugent.be FAU - Vral, Anne AU - Vral A LA - eng PT - Journal Article PT - Review PL - Italy TA - Ann Ist Super Sanita JT - Annali dell'Istituto superiore di sanita JID - 7502520 SB - IM MH - Automation MH - Centromere/radiation effects/ultrastructure MH - Humans MH - Lymphocytes/radiation effects MH - Micronucleus Tests/*methods MH - *Radioactive Hazard Release MH - Radiometry/*methods RF - 43 EDAT- 2009/10/29 06:00 MHDA- 2010/01/06 06:00 CRDT- 2009/10/29 06:00 PHST- 2009/10/29 06:00 [entrez] PHST- 2009/10/29 06:00 [pubmed] PHST- 2010/01/06 06:00 [medline] PST - ppublish SO - Ann Ist Super Sanita. 2009;45(3):260-4.