A cytogenetic follow-up of some highly irradiated victims of the Chernobyl accident.
Radiat Prot Dosimetry
; 113(2): 152-61, 2005.
Article
in En
| MEDLINE
| ID: mdl-15572397
ABSTRACT
A follow-up of 10 highly irradiated men, mostly reactor crew, from the Chernobyl accident is described. Their pre-accident medical conditions and relevant medical status approximately 10-13 y later are listed. A comparison is made between estimates of their average whole-body penetrating radiation doses derived from several biological parameters. First estimates were based on their presenting severity of prodromal sickness, early changes in blood cell counts and dicentric chromosome aberrations in lymphocytes. In three cases ESR measurements on tooth enamel were also made. Retrospective dosimetry using FISH translocations was attempted 10-13 y later. This showed good agreement for those patients with the lower earlier dose estimates, up to about 3 Gy. For the others, extending up to about 12 Gy, the translocations indicated lower values, suggesting that in these cases translocations had somewhat declined. Repeated chromosomal examinations during the follow-up period showed an expected decline in dicentric frequencies. The pattern of decline was bi-phasic with a more rapid first phase, with a half-life of approximately 4 months followed by a slower decline with half-lives around 2-4 y. The rapid phase persisted for a longer time in those patients who had received the highest doses. 10-13 y later dicentric levels were still above normal background, but well below the translocation frequencies.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Radiation Protection
/
Radiation Monitoring
/
Occupational Exposure
/
Chromosome Aberrations
/
Chromosomes, Human
/
In Situ Hybridization, Fluorescence
/
Chernobyl Nuclear Accident
Type of study:
Clinical_trials
/
Etiology_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limits:
Adult
/
Humans
/
Male
/
Middle aged
Country/Region as subject:
Europa
Language:
En
Journal:
Radiat Prot Dosimetry
Year:
2005
Document type:
Article
Affiliation country:
RUSSIA