STATE INSTITUTION «NATIONAL RESEARCH CENTER FOR RADIATION MEDICINE OF THE NATIONAL ACADEMY OF MEDICAL SCIENCES OF UKRAINE» - RESEARCH ACTIVITIES AND SCIENTIFIC ADVANCE IN 2019

Research activities and scientific advance achieved in 2019 at the State Institution «National Research Center forRadiation Medicine of the National Academy of Medical Sciences of Ukraine» (NRCRM) concerning medical problemsof the Chornobyl disaster, radiation medicine, radiobiology, radiation hygiene and epidemiology in collaborationwith the WHO network of medical preparedness and assistance in radiation accidents are outlined in the annualreport. The report presents the results of fundamental and applied research works of the study of radiation effectsand health effects of the Chornobyl accident.The report also shows the results of scientific-organizational and health care work, staff training.The Scientific Council meeting of NAMS approved the NRCRM Annual Report.

STATE INSTITUTION «NATIONAL RESEARCH CENTER FOR RADIATION MEDICINE OF THE NATIONAL ACADEMY OF MEDICAL SCIENCES OF UKRAINE» - RESEARCH ACTIVITIES AND SCIENTIFIC ADVANCE IN 2018

Research activities and scientific advance achieved in 2018 at the State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine» (NRCRM) concerning medical problems of the Chornobyl disaster, radiation medicine, radiobiology, radiation hygiene and epidemiology in collaboration with the WHO network of medical preparedness and assistance in radiation accidents are outlined in the annual report. The report presents the results of fundamental and applied research works of the study of radiation effects and health effects of the Chornobyl accident; fulfillment of tasks of «State Social Program for Improving Safety, Occupational Health and Working Environment in 2014-2018».The report also shows the results of scientific-organizational and health care work, staff training. The NRCRM Annual Report was approved at the Scientific Council meeting of NAMS on March 21, 2019.

STATE INSTITUTION NATIONAL RESEARCH CENTER FOR RADIATION MEDICINE OF THE NATIONAL ACADEMY OF MEDICAL SCIENCES OF UKRAINE - RESEARCH ACTIVITIES AND SCIENTIFIC ADVANCE IN 2017

Research activities and scientific advance achieved in 2017 at the State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine» (NRCRM) concerning medical problems of the Chornobyl disaster, radiation medicine, radiobiology, radiation hygiene and epidemiology in collaboration with the WHO network of medical preparedness and assistance in radiation accidents are outlined in the annual report. The report presents the results of fundamental and applied research works of the study of radiation effects and health effects of the Chornobyl accident; fulfillment of tasks of «State social program for improving safety, occupational health and working environment in 2014-2018 years».The report also shows the results of scientific-organizational and health care work, staff training.The NRCRM Annual Report was approved at the Scientific Council meeting of NAMS on March 23, 2018.

BIOLOGICAL MARKERS OF EXTERNAL AND INTERNAL EXPOSURE IN SHELTER CONSTRUCTION WORKERS: A 13-YEAR EXPERIENCE

OBJECTIVE

The aim of this study is to investigate the cellular, molecular, genetic and non-invasive functional biomarkers of occupational irradiation in workers exposed to a combination of external gamma-radiation and incorporation of transuranium elements.

RESULTS

A study was performed in 688 radiation workers of Shelter object conversion into a safe system with mean shift dose of external exposure of 26.06 mSv (range: 0.1-113.35) and risk of internal exposure with transuranium elements. Several biological parameters could serve as biomarkers of exposure at radiation doses below 100 mSv and even in 20-50 mSv interval. The parallel changes were shown in decline of brain electric activity, telomere length, differences in CCND1, CDKN1A, CDKN2A, VEGFA, TP53, DDB2 genes expression. An increase in counts of dicentrics, pair fragments and TCR-variant lymphocytes at doses over professional limits shows the need of biological dosimetry. The most sensitive markers include TCR-CD4+, γ-H2AX+ and CyclinD1+ cell counts. Implementation of flow cytometry approach for these markers enables quick obtaining of quantitative data. Confounding factors included respiratory function and smoking. The study of the radiation workers with the history of chronic exposure in radiation area during 3-5 years demonstrates changes of compensatory origin, i.e. absence of telomere shortening, increased number of NK-cells in combination with lower expression of intracellular γ-H2AX.

CONCLUSION

This study confirms the presence of radiation-induced changes in gene regulation of cell proliferation, telomere function and apoptosis in radiation workers exposed to external and internal exposure at doses above professional limits and increase of compensatory changes.

State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine» - research activities and scientific advance in 2016

Research activities and scientific advance achieved in 2016 at the State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine» (NRCRM) concerning medical problems of the Chornobyl disaster, radiation medicine, radiobiology, radiation hygiene and epidemiology in collaboration with the WHO network of medical preparedness and assistance in radiation accidents are outlined in the annual report. The report presents the results of fundamental and applied research works of the study of radiation effects and health effects of the Chornobyl accident; fulfillment of tasks of «State social program for improving safety, occupational health and working environment in 2014-2018 years».The report also shows the results of scientific organizational and health care work, staff training. The NRCRM Annual Report was approved at the Scientific Council meeting of NAMS on March 17, 2016.

State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine» - research activities and scientific advance in 2015

Research activities and scientific advance achieved in 2014 at the State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine» (NRCRM) concerning medical problems of the Chornobyl disaster, radiation medicine, radiobiology, radiation hygiene and epidemiology in collaboration with the WHO network of medical preparedness and assistance in radiation accidents are outlined in the annual report.The report presents the results of fundamental and applied research works of the study of radiation effects and health effects of the Chornobyl accident; fulfillment of tasks of «State social program for improving safety, occupational health and working environment in 2014-2018 years».The report also shows the results of scientific organizational and health care work, staff training.The NRCRM Annual Report was approved at the Scientific Council meeting of NAMS on March 17, 2016.

State Institution "National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine" - research activities and scientific advance in 2014

Research activities and scientific advance achieved in 2014 at the State Institution "National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine" (NRCRM) concerning medical problems of the Chornobyl disaster, radiation medicine, radiobiology, radiation hygiene and epidemiology in collaboration with the WHO network of medical preparedness and assistance in radiation accidents are outlined in the annual report.Epidemiological cohort studies found increased incidence (1990-2012 gg.) of thyroid cancer in victims of Chernobyl accident (liquidators - in 4.6 times, evacuated - in 4.0 times, residents of contaminated areas - in 1.3 times) and increased incidence of breast cancer in female workers of 1986-1987. (in the 1994-2012 biennium. SIR = 160,0%, 95% CI: 142,4-177,6). Retrospective studies of thyroid cancer ("case control") in cohorts and 152 thousand of liquidators were continued together with the US National Cancer Institute. Radiation risks of multiple myeloma and chronic lymphocytic leukemia were found.Molecular effects of remote period after radiation exposure include changes in gene expression TERF1, TERF2, CCND1, telomere length, the protein expression of cyclin D1, histone gamma H2AX. An association of molecular changes with cognitive deficits were defined. Genetic polymorphisms of rs2981582 gene FGFR2, rs12443621 gene TNRC9, rs3817198 gene LSP1, rs3803662 gene TNRC9, rs889312 gene MAP3K1 and their association with breast can cer were studied; the expression by tumor cells of estrogen and progesterone receptor, antigens of c kit, cytoker atins 5/6, TP53 and ki67, amplification status of the gene Her2 / neu, mutation status of the genes BRCA1 (muta tions 185delAG and 5382insC) and BRCA2 (mutation 6174delT) were studied. The possibility of persistence of radi ation modified hidden chromosomal instability in consecutive generations of human somatic cells was proven.The status of reproductive function and peculiarities of baby nutrition in population of contaminated areas were studied. In the framework of National social programs for improving safety, occupational health and working envi ronment in 2014 2018 for the first time in Ukraine developed and successfully completed intercalibration of 18 lab oratories for individual monitoring. Studying of medical effects of radiation in interventional cardiologists was started.Experimental studies concerned the impact of radiomodyficans on cell systems. The report also shows the results of scientific organizational and health care work, staff training.The NRCRM Annual Report was approved at the Scientific Council meeting of NAMS on March 17, 2015.

State Institution "National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine" - research activities and scientific advance in 2013

Research activities and scientific advance achieved in 2013 at the State Institution "National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine" (NRCRM) concerning medical problems of the Chornobyl disaster, radiation medicine, radiobiology, radiation hygiene and epidemiology in collaboration with the WHO network of medical preparedness and assistance in radiation accidents are outlined in the annual report. Key points include the research results of XRCC1 and XPD gene polymorphism in thyroid cancer patients, CD38 gene GG genotype as a risk factor for chronic lymphocytic leukemia, frequency of 185delAG and 5382insC mutations in BRCA1 gene in women with breast cancer, cognitive function and TERF1, TERF2, TERT gene expression both with telomere length in human under the low dose radiation exposure. The "source-scattering/shielding structures- man" models for calculation of partial dose values to the eye lens and new methods for radiation risk assessment were developed and adapted. Radiation risks of leukemia including chronic lymphocytic leukemia in the cohort of liquidators were published according to the "case-control" study results after 20 years of survey. Increase of non-tumor morbidity in liquidators during the 1988-2011 with the maximum level 12-21 years upon irradiation was found. Incidence in evacuees appeared being of two-peak pattern i.e. in the first years after the accident and 12 years later. Experimental studies have concerned the impact of radio-modifiers on cellular systems, reproductive function in the population, features of the child nutrition in radiation contamination area were studied. Report also shows the results of scientific and organizational, medical and preventive work, staff training, and implementation of innovations. The NRCRM Annual Report was approved at the Scientific Council meeting of NAMS on March 3, 2014.

State institution "National Research Center for Radiation Medicine of National Academy of Medical Sciences of Ukraine" 2012 annual report

The 2012 annual results of NRCRM activity in research and its implementation in healthcare practice, aid to survivors, and international collaboration were summarized in the report by Director General of the NRCRM D.A. Bazyka at the Scientific Council meeting of NAMS on March 26, 2013.

Design and operation of the internal dosimetry program for the Chornobyl 'shelter implementation plan'

The paper discusses the system of individual monitoring for internal exposure, deployed by the Ukrainian Radiation Protection Institute as an integral component of the Shelter Implementation Plan (SIP) at the Chornobyl industrial site. SIP anticipates involving of up to 10,00 workers of numerous SIP contractors. A typical daily shift comprises several hundred workers. Most of them have a direct contact with the irradiated nuclear fuel, fuel-contained aerosols and other contaminated materials on the industrial site. The hierarchical SIP individual monitoring program has been designed with consideration of peculiarities of SIP exposure conditions and aims at the timely and reliable identification of intakes, assessment of doses and initiation of measures for prevention of further intakes.