Current radiological situation in areas of Ukraine contaminated by the Chornobyl accident: Part 2. Strontium-90 transfer to culinary grains and forest woods from soils of Ivankiv district

Labunska, Iryna; Levchuk, S.; Kashparov, V.; Holiaka, Dmytrii; Yoschenko, L.; Santillo, David; Johnston, Paul

doi:10.1016/j.envint.2020.106282

Cited by 19 publications

(5 citation statements)

References 24 publications

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“…1, 6, 9) and B 12 -T 4 (subgroups No. 3,6) indicate that vitamins B 9 and B 12 play an important role in maintaining the correct concentration of T 4 in the blood, participating in the methylation process of H cy , thereby reducing the load on the cycle of trans-sulphuration reactions and reducing the intensity of T 4 deiodination.…”

Section: Resultsmentioning

confidence: 99%

Hyperhomocysteinemia and Pituitary-Thyroid Axis Among Children Living Near the Chornobyl Exclusion Zone

Bandazheuski,

Dubovaya

2023

Theoretical and Practical Aspects of Science Development

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The prevalence of cases of hyperhomocysteinemia in the population of children living in a radioactively contaminated area due to the accident at the Chornobyl Nuclear Power Plant (ChNPP) requires an in-depth and immediate study of the aetiopathogenesis of this condition. In view of the increase in the number of cases of thyroid cancer in the period following the accident, it is advisable to determine the relationship between the level of homocysteine (Hcy), the state of the folate cycle (FC) and the thyroid status in children. The aimof the study was to determine the association of Hcy and pituitary-thyroid axis hormones with a different combination of genetic polymorphisms of FC in children living in areas bordering the Chornobyl Exclusion Zone (ChEZ). The methodology of the study is based on the evaluation by statistical methods of the results of genetic and laboratory examinations of 336 individuals aged 12-17 from the Ivankiv and Poliske districts of the Kyiv Oblast of Ukraine, obtained during the implementation of projects of the European Commission and the Regional Council of the Rhone-Alpes (France). Blood levels of pituitary thyroid stimulating hormone (TSH), free triiodothyronine (T3), free thyroxine (T4), Hcy, vitamins B6, B9 and B12 were analysed, and the status of the genetic system of FC was studied. Results. It was shown that in subgroups of children from the Ivankiv district with dysfunction of the main enzymes of FC due to risk alleles of genetic polymorphisms MTR:A2756G, MTHFR:A1298C, MTHFR:C677T and MTRR:A66G, after forest fires in the ChEZ, contributing to an increase in blood Hcy content, direct correlations between Hcy and TSH were revealed. The formation of the analysed subgroups including the genotypes of different FC polymorphisms made it possible to detect stronger correlations between Hcy and TSH compared to subgroups in which only the genotypes of one polymorphism were taken into account as the main ones. At the same time, it was possible to determine the metabolic relationships of sulphur-containing amino acids and the pituitary-thyroid axis in the children's bodies, taking into account the state of the FC genes and environmental exposure, including the radiation factor. The strongest direct relationship between Hcy and TSH was found in the compound heterozygous association A/C MTHFR:1298 – C/T MTHFR:677 in combination with genotypes containing risk alleles of the genetic polymorphisms MTR:A2756G and AMTRR:A66G. At the same time, transsulfuration reactions using Hcy were activated. Hcy, which promotes the formation of TSH, plays an important role in the regulation of thyroid hormone production. TSH stimulates the process of deiodination of T4 in tissues, resulting in increased production of T3. T3, acting on MTHFR, stimulates the formation of 5-MTHF, which is involved in the process of Hcy methylation. With increased formation, T3 inhibits the activity of trans-sulfurisation reactions. Conclusions. According to the results of the study, the cycle of trans-sulphurisation reactions should be considered as a metabolic mechanism linking thyroid hormone formation and the exchange of sulphur-containing amino acids. The relationship between hyperhomocysteinemia and the pituitary-thyroid axis in children of the Ivankiv district illustrates the compensatory-adaptive reaction of the developing organism aimed at increasing Hcy methylation under appropriate endogenous (the state of the genetic apparatus of the FC) and exogenous (radiation exposure) conditions.

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Section: Resultsmentioning

confidence: 99%

Hyperhomocysteinemia and Pituitary-Thyroid Axis Among Children Living Near the Chornobyl Exclusion Zone

Bandazheuski,

Dubovaya

2023

Theoretical and Practical Aspects of Science Development

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“…Thus, it can be confirmed that the invasion of Russian troops caused the significant increase and variations in aerosol concentrations in the city of Kiev. Even with the decrease in aerosol concentrations due to the stoppage of industrial activities due to these bombing raids, the accumulation of atmospheric aerosols can be seen due to the movement of troops, which can be even more worrying, since the soil of the Kiev region potentiates a high load of hazardous elements, such as: iron, zinc, nickel, arsenic, cadmium, lead, aluminum, mercury, titanium, tungsten, tin, cobalt, and chromium, in addition to the high load of radioactive elements, historically aggravated by the Chernobyl accident, which left high levels of radionuclides in the soil [21,[60][61][62][63].…”

Section: Resultsmentioning

confidence: 99%

Using the Sentinel-3B Satellite in Geospatial Analysis of Suspended Aerosols in the Kiev, Ukraine Region

Neckel¹,

Santosh

Bodah

et al. 2022

Sustainability

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The use of images from the Sentinel-3B SYN satellite (surface reflectance and aerosol parameters over land) is currently one of the most advanced technologies utilized to identify atmospheric aerosol concentrations on a global scale. The general aim of this study is to analyze the evolution of aerosols in the atmosphere of the Kiev region in northern Ukraine during 2019, 2020, 2021 and 2022. Due to this study’s timing, both prior to and during the current military incursion into Ukraine, this study also evaluates the consequences of the invasion of the Russian army on the territory of Ukraine, in relation to the quantitative levels of aerosols present in the atmosphere. Satellite image data were modelled in SNAP software (Sentinel Application Platform). Using the JASP software (version 0.14.1.0), clusters with variations of T550 (Aerosol Optical Thickness) were generated. The Sentinel-3B SYN satellite images were made available by the European Space Agency (ESA), with moderate spatial resolution (>300 m), calibrated and normalized to an average standard of 0.83 µg/mg, with a maximum error of 6.62% in the 30 sampled points. Satellite image data were modelled in SNAP software. Using the JASP software (version 0.14.1.0), clusters with variations of T550 (Aerosol Optical Thickness) were generated. The results show variations in the concentration of T550 in different periods, revealing that the military conflict between Russia and Ukraine directly influenced the dynamics of aerosol concentration, attributed to factors incompatible with environmental sustainability.

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“…A number of studies have shown that the factors that most affect the migration ability of Sr in soil are moisture (Arapis et al, 1997;Dubchak, 2018;Zhang et al, 2019;Cai et al, 2020;Mikhailovskaya, Pozolotina, 2020) due to high mass flow of Sr in the liquid phase; soil humus content (Guillén, 2018;Burger, Lichtscheidl, 2019) due to its ability to fix Sr compounds; soil acidity (Kashparov et al, 2013;Burger, Lichtscheidl, 2019) and content of exchangeable Ca (Labunska et al, 2021). These parameters are important variables influencing migration ability of Sr in the soil, which can prevent its downward migration.…”

Section: Resultsmentioning

confidence: 99%

Leaching of strontium from Albic Retisol limed with Sr-containing industrial waste

Litvinovich

Lavrishchev

Pavlova

et al. 2021

Zemdirbyste-Agriculture

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Current radiological situation in areas of Ukraine contaminated by the Chornobyl accident: Part 2. Strontium-90 transfer to culinary grains and forest woods from soils of Ivankiv district

Cited by 19 publications

References 24 publications

Hyperhomocysteinemia and Pituitary-Thyroid Axis Among Children Living Near the Chornobyl Exclusion Zone

Hyperhomocysteinemia and Pituitary-Thyroid Axis Among Children Living Near the Chornobyl Exclusion Zone

Using the Sentinel-3B Satellite in Geospatial Analysis of Suspended Aerosols in the Kiev, Ukraine Region

Leaching of strontium from Albic Retisol limed with Sr-containing industrial waste

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