[The cytogenetic consequences of chronic irradiation in rodent populations inhabiting the Eastern Urals Radioactive Trace zone].
In bone marrow cells of rodents (Apodemus (Sylvaemus) uralensis Pall., 1811, Apodemus agrarius Pall., 1771) inhabiting the Eastern Urals Radioactive Trace (EURT) zone (Kyshtym radiation accident 1957) and adjacent areas of Urals, the chromosome instability and 90Sr accumulation in bones were investigated. Intensive mutagenic process in both species from impact plots (the soil pollution by 90Sr 2322-16690 kBq/m2) was found. Significant positive correlation of aberrant cells frequencies and 90Sr was shown. Possible causes of the lack of resistance to long-term mutagenic factor (over 100 generations since 50 years from the accident) such as migration of animals and specific configuration of the EURT zone (narrow extended territory with sharply falling gradient of radionuclide pollution), which considerably decrease the probability that certain changes will be fixed and inherited in a series of generations of rodents, are discussed.
Ialkovskaia
L E
LE
Grigorkina
E B
EB
Tarasov
O V
OV
D000818:Animals; D001854:Bone Marrow Cells / Q000473:pathology / Q000528:radiation effects; D002869:Chromosome Aberrations / Q000528:radiation effects; D005260:Female; D005269:Femur / Q000378:metabolism / Q000473:pathology / Q000528:radiation effects; D008297:Male; D051189:Murinae / Q000254:growth & development*; D009688:Nuclear Reactors; D011834:Radiation Monitoring / Q000379:methods*; D018788:Radioactive Hazard Release; D011849:Radioactive Tracers; D012800:Siberia; D012990:Soil Pollutants, Radioactive / Q000032:analysis / Q000493:pharmacokinetics / Q000633:toxicity*; D013326:Strontium Radioisotopes / Q000032:analysis / Q000493:pharmacokinetics / Q000633:toxicity
D011849:Radioactive Tracers; D012990:Soil Pollutants, Radioactive; D013326:Strontium Radioisotopes