PMID- 26653981 OWN - NLM STAT- MEDLINE DCOM- 20160427 LR - 20151215 IS - 1879-3592 (Electronic) IS - 1383-5718 (Linking) VI - 794 DP - 2015 Dec TI - Construction of a cytogenetic dose-response curve for low-dose range gamma-irradiation in human peripheral blood lymphocytes using three-color FISH. PG - 32-8 LID - S1383-5718(15)00263-6 [pii] LID - 10.1016/j.mrgentox.2015.10.002 [doi] AB - In order to estimate biological doses after low-dose ionizing radiation exposure, fluorescence in situ hybridization (FISH) using three differentially colored chromosome painting probes was employed to detect exchange-type chromosome aberrations. A reference dose response curve was constructed using blood samples from a female donor whose lymphocytes consistently exhibited a low frequency of cells at the second mitosis under routine culture conditions. Aberration yields were studied for a total of about 155 thousand metaphases obtained from seven dose-points of gamma irradiations (0, 50, 100, 150, 200, 250 and 300mGy). In situ hybridization was performed using commercially available painting probes for chromosomes 1, 2 and 4. With the aid of an automated image-capturing method, exchange-type aberrations involving painted chromosomes were detected with considerable accuracy and speed. The results on the exchange-type aberrations (dicentrics plus translocations) at the seven dose-points showed a good fit to the linear-quadratic model (y=0.0023+0.0015x+0.0819x(2), P=0.83). A blind test proved the reproducibility of the reference dose-response relationship. In the control experiments using blood samples from another donor, the estimated doses calculated on the basis of the present reference curve were proved to be in good agreement with the actual physical doses applied. The present dose-response curve may serve as a means to assess the individual differences in cytogenetical radio-sensitivities. CI - Copyright (c) 2015 The Authors. Published by Elsevier B.V. All rights reserved. FAU - Suto, Yumiko AU - Suto Y AD - Biodosimetry Research Team, Research Center for Radiation Emergency Medicine, National Institute of Radiological Sciences, Chiba, Japan. Electronic address: y-suto@nirs.go.jp. FAU - Akiyama, Miho AU - Akiyama M AD - Biodosimetry Research Team, Research Center for Radiation Emergency Medicine, National Institute of Radiological Sciences, Chiba, Japan. FAU - Noda, Takashi AU - Noda T AD - REMAT, National Institute of Radiological Sciences, Chiba, Japan. FAU - Hirai, Momoki AU - Hirai M AD - Biodosimetry Research Team, Research Center for Radiation Emergency Medicine, National Institute of Radiological Sciences, Chiba, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20151024 PL - Netherlands TA - Mutat Res Genet Toxicol Environ Mutagen JT - Mutation research. Genetic toxicology and environmental mutagenesis JID - 101632149 SB - IM MH - Adult MH - Chromosome Aberrations/*radiation effects MH - Dose-Response Relationship, Radiation MH - Female MH - *Gamma Rays MH - Humans MH - In Situ Hybridization, Fluorescence MH - Lymphocytes/*radiation effects MH - Metaphase MH - Reproducibility of Results MH - Translocation, Genetic OTO - NOTNLM OT - 3-color FISH OT - Biodosimetry OT - Dose response curve OT - Gamma-ray irradiation OT - Human peripheral lymphocytes OT - Low-dose range EDAT- 2015/12/15 06:00 MHDA- 2016/04/28 06:00 CRDT- 2015/12/15 06:00 PHST- 2015/08/01 00:00 [received] PHST- 2015/10/17 00:00 [revised] PHST- 2015/10/20 00:00 [accepted] PHST- 2015/12/15 06:00 [entrez] PHST- 2015/12/15 06:00 [pubmed] PHST- 2016/04/28 06:00 [medline] AID - S1383-5718(15)00263-6 [pii] AID - 10.1016/j.mrgentox.2015.10.002 [doi] PST - ppublish SO - Mutat Res Genet Toxicol Environ Mutagen. 2015 Dec;794:32-8. doi: 10.1016/j.mrgentox.2015.10.002. Epub 2015 Oct 24.