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The Medical Radiology and Radiation Safety journal ISSN 1024-6177 was founded in January 1956 (before December 30, 1993 it was entitled Medical Radiology, ISSN 0025-8334). In 2018, the journal received Online ISSN: 2618-9615 and was registered as an electronic online publication in Roskomnadzor on March 29, 2018. It publishes original research articles which cover questions of radiobiology, radiation medicine, radiation safety, radiation therapy, nuclear medicine and scientific reviews. In general the journal has more than 30 headings and it is of interest for specialists working in thefields of medicine¸ radiation biology, epidemiology, medical physics and technology. Since July 01, 2008 the journal has been published by State Research Center - Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency. The founder from 1956 to the present time is the Ministry of Health of the Russian Federation, and from 2008 to the present time is the Federal Medical Biological Agency.
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Medical Radiology and Radiation Safety. 2017. Vol. 62. No. 1. P. 12-19
DOI: 10.12737/25029
Dioxide plutonium-239 in the lung. Report 1: Metabolism 239PuO2 with intratracheal administration
I.K. Belyaev, A.S. Samoylov, E.S. Zhorova, V.S. Kalistratova, I.M. Parfenova, G.S. Тischenko
A.I. Burnasyan Federal Medical Biophysical Center of FMBA, Moscow, Russia, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
I.K. Belyaev – head of Lab, PhD in Biological Sciences; A.S. Samoylov – General Director SRC-FMBC, MD; E.S. Zhorova – leading researcher, PhD in Biological Sciences; V.S. Kalistratova – leading researcher, MD; I.M. Parfenov – research fellow; G.S. Tischenko – research fellow
Abstract
Purpose: Investigation of macro and micro distribution of 239PuO2 in the lungs of rats and metabolic parameters taking into account the variability of initial bronchoalveolar deposits.
Materials and methods: Plutonium dioxide was single introduced intracheal into nonlinear male rats in the amount of 100 kBq / kg of body weight. The experimental animals were observed during their life. Lifetime measurement of radioactivity of the body and excreta and posthumous radiometry of organs were made. Auto and histoautoradiografic study of lungs and lymph nodes were performed.
Results: 239PuO2 particles are removed from the respiratory organs most intensively during the first 7 days. Slowing of metabolic processes is observed in the period from 7 to 200 days. The data on post-mortem 239PuO2 content in the lungs and regional lymph nodes of rats indicate a decrease of the content of plutonium dioxide in the lungs and no reduction in the lymph nodes with time.
Three periods of effective half-life of plutonium dioxide from the lungs were experimentally identified and calculated. These values indicate that the parameters of the respiratory clearance depend on the value of the initial radionuclide bronchoalveolar deposits.
Conclusions: Сonsiderable variability of plutonium dioxide content in the lungs and regional lymph nodes of rats following intratracheal administration has been shown. Neven distribution of 239PuO2 with the expressed α-particle aggregation assumes a significant difference in the local fabric of absorbed radiation doses in the lungs, but does not exclude the possibility of their calculation on the respiratory system as a whole. Options clearance from the respiratory 239PuO2 correspond to the values of the initial bronchoalveolar deposits.
The cleansing light of plutonium dioxide, in contrast to its soluble compounds, the role of radionuclide transport blood to other organs and tissues is not of great impotance.
The results presented plutonium dioxide metabolism studies administered intratracheally, testifies to the fact that the implementation of the biological effects of the compounds can be expected mainly in the lungs. Evidence about the profile respiratory disease will be presented in a subsequent communication.
Key words: plutonium dioxide, lungs, metabolism
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For citation: Belyaev IK, Samoylov AS, Zhorova ES, Kalistratova VS, Parfenova IM, Tischenko G.S. Dioxide plutonium-239 in the lung. Report 1: Metabolism 239PuO2 with intratracheal administration. Medical Radiology and Radiation Safety. 2017;62(2):12-9. Russian. DOI: 10.12737/25029
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