| Autor: |
Bertho JM; Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-SANTE/SESANE, Fontenay-aux Roses, France., Bo R, Magneron V, Legendre A, Cochard M, Broggio D, Tack K |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of radiological protection : official journal of the Society for Radiological Protection [J Radiol Prot] 2020 Jun; Vol. 40 (2), pp. 504-519. Date of Electronic Publication: 2020 Feb 28. |
| DOI: |
10.1088/1361-6498/ab7b43 |
| Abstrakt: |
Exposures in post-accidental situations are complex and include both external exposure and internal contamination with several radionuclides. However, in vivo and in vitro studies generally use simplified exposures, while a recent study suggested that combined external irradiation and internal contamination may induce more severe biological effects compared to single exposures. In an attempt to test the hypothesis of potential non-additive effects of multiple radiological exposures, we used a mouse model of combined external x-ray irradiation at 1 and 5 Gy and internal contamination with injection of 20 KBq 137 Cs. The results showed differential kinetics of 137 Cs elimination in irradiated animals compared to sham-irradiated, 137 Cs injected animals. Moreover, changes in plasma potassium and in relative testis weight were observed 38 days after irradiation and injection in co-exposed animals compared to 137 Cs injection alone. These results demonstrate that an external exposure combined with an internal contamination may lead to unexpected changes in biokinetics of radionuclides and biological effects compared to single exposures. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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