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Kuzan A, Rewak-Soroczyńska J, Kardach M, Królewicz E, Kaliszewski K, Wiglusz R. Multi-element analysis of metals in human pathological and unchanged thyroid glands - pilot study. Thyroid Res 2024; 17:11. [PMID: 38764091 PMCID: PMC11103985 DOI: 10.1186/s13044-024-00197-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 04/05/2024] [Indexed: 05/21/2024] Open
Abstract
Disturbances in the homeostasis of the elemental composition of thyroid tissue may have serious metabolic and health consequences. It is believed that the accumulation of some metals or the deficiency of others may even cause lethal tumours. Due to the fact that metallomics most often uses human serum to analyse macro and microelements as well as trace elements, it was decided to use material that is more difficult to obtain, but also adds credibility to the research - thyroid tissue samples biopsy. The experiments were conducted on 17 patients diagnosed with: nodular (10) and colloidal goitre (2), chronic thyroiditis (2), follicular adenoma (2) and papillary carcinoma (1). They were recruited by collecting a tumour fragment, control fragment and serum from each of them. The content of Ca, Cd, Co, Cr, Cu, Fe, Mg, Mn, Ni, Pb, Zn was examined using ICP-OES (Inductively Coupled Plasma - Optical Emission Spectrometers). Simultaneously, biochemical methods were used to determine the markers of inflammation, glycation and peroxidation: malondialdehyde, pentosidine, reactive free amine content, compounds with thiol groups and galectin 3 in the sera of the examined patients. Three statistically significant correlations were identified: Ca-Mg and Cu-Zn in control tissues (p < 0.05) and Cr-Mn in pathological tissues (p < 0.05). A comparison of individual groups of patients shows that there are some potentail tendencies to increase or decrease in the concentration of certain elements or markers of inflammation and glycation, therefore we discuss potential relationships between a given parameter and a thyroid disorder. The pilot study is an introduction to a deeper analysis aimed at tracing the pathomechanism of the development of thyroid diseases, so that the risk of developing these diseases can be effectively minimized.
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Affiliation(s)
- Aleksandra Kuzan
- Department of Medical Biochemistry, Wroclaw Medical University, 50-368, Wroclaw, Poland.
- Department of Preclinical Sciences, Pharmacology and Medical Diagnostics, Faculty of Medicine, Wrocław University of Science and Technology, 50-370, Wrcław, Poland.
| | - Justyna Rewak-Soroczyńska
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422, Wroclaw, Poland
| | - Marta Kardach
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422, Wroclaw, Poland
| | - Emilia Królewicz
- Department of Medical Biochemistry, Wroclaw Medical University, 50-368, Wroclaw, Poland
| | - Krzysztof Kaliszewski
- Department of General, Minimally Invasive and Endocrine Surgery, Wroclaw Medical University, Borowska Street 213, 50-556, Wroclaw, Poland
| | - Rafał Wiglusz
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422, Wroclaw, Poland.
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Faculty of Chemistry, Silesian University of Technology, Krzywoustego 4, 44100, Gliwice, Poland.
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Еrmakova O, Raskosha О. Changes in the structural and functional state of the thyroid gland of small mammals when exposed to low-intensity chronic radiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:34170-34183. [PMID: 38696014 DOI: 10.1007/s11356-024-33504-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 04/25/2024] [Indexed: 05/31/2024]
Abstract
The study gives a morphofunctional assessment of the state of the thyroid gland of tundra voles (Microtus oeconomus Pall.) in conditions of an increased radiation background (the Ukhta district of the Komi Republic (Russia) and the 30-km zone of the Chernobyl NPP), as well as in an experiment with chronic external gamma irradiation in the low dose range. The work summarizes the experience of more than 35 years of field and laboratory research. The authors have noted the high sensitivity of the thyroid gland to chronic radiation against the general irradiation of the organism both in natural conditions and in the experiment. The repeatability of the observed effects in voles from natural populations and the comparability of some effects with the morphological changes occurring in animals after exposure to ionizing radiation in the experiment indicates the radiation nature of these effects. The tundra voles living in conditions of increased radiation background have been identified for a greater variety of morphological rearrangements in the thyroid parenchyma than the experimental animals. The complex and ambiguous nature of the thyroid gland responses to radiation exposure indicates the possibility of a significant increase in the risk of negative effects of ionizing radiation in contrast with the expected results of biological effects' extrapolation from high to low doses.
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Affiliation(s)
- Olga Еrmakova
- Institute of Biology Federal Research Centre Komi Science Centre of the Ural Branch of the Russian Academy of Sciences, Kommunisticheskaya 28, Syktyvkar, Russian Federation, 167982
| | - Оksana Raskosha
- Institute of Biology Federal Research Centre Komi Science Centre of the Ural Branch of the Russian Academy of Sciences, Kommunisticheskaya 28, Syktyvkar, Russian Federation, 167982.
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3
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Song C, Luo JY, Pang YY, He RQ, Li XJ, Chen G, Zhao CY, Qu N, Chen YM, Yang L, Li BQ, Shi L. Historical context, process, and development trends of pediatric thyroid cancer research: a bibliometric analysis. Front Oncol 2024; 14:1340872. [PMID: 38463235 PMCID: PMC10921230 DOI: 10.3389/fonc.2024.1340872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 01/24/2024] [Indexed: 03/12/2024] Open
Abstract
Objective At present, the structure of knowledge in the field of childhood thyroid cancer is not clear enough, and scholars lack a sufficient understanding of the developing trends in this field, which has led to a shortage of forward-looking outputs. The purpose of this research is to help scholars construct a complete knowledge framework and identify current challenges, opportunities, and development trends. Methods We searched the literature in the Web of Science Core Collection database on August 7, 2023 and extracted key information from the top 100 most cited articles, such as the countries, institutions, authors, themes, and keywords. We used bibliometric tools such as bibliometrix, VOSviewer, and CiteSpace for a visualization analysis and Excel for statistical descriptions. Results The top 100 most cited articles fluctuated over time, and the research was concentrated in European countries, the United States, and Japan, among which scientific research institutions and scholars from the United States made outstanding contributions. Keyword analysis revealed that research has shifted from simple treatment methods for pediatric thyroid cancer (total thyroidectomy) and inducing factors (the Chernobyl power station accident) to the clinical applications of genetic mutations (such as the BRAF and RET genes) and larger-scale genetic changes (mutation studies of the DICER1 gene). The thematic strategy analysis showed an increasing trend towards the popularity of fusion oncogenes, while the popularity of research on traditional treatments and diagnostics has gradually declined. Conclusion Extensive research has been conducted on the basic problems of pediatric thyroid cancer, and there has been significant outputs in the follow-up and cohort analysis of conventional diagnostic and treatment methods. However, these methods still have certain limitations. Therefore, scholars should focus on exploring fusion genes, the clinical applications of molecular targets, and novel treatment methods. This study provides a strong reference for scholars in this field.
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Affiliation(s)
- Chang Song
- Department of Pathology, Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jia-Yuan Luo
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yu-Yan Pang
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Rong-Quan He
- Department of Medical Oncology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Xiao-Jiao Li
- Department of Nuclear Medicine, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Gang Chen
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Chun-Yan Zhao
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Ning Qu
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yan-Mei Chen
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Li Yang
- Department of Pathology, Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Bi-Qi Li
- Department of Pathology, Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Lin Shi
- Department of Pathology, Second Affiliated Hospital of Guangxi Medical University, Nanning, China
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Hirota M, Higaki S, Ishida Y, Nakata D, Terao K, Ito S. Feasibility of Treatment Agents in Radioactive Iodine Separation from Waste Liquids. HEALTH PHYSICS 2024:00004032-990000000-00123. [PMID: 38206086 DOI: 10.1097/hp.0000000000001780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
ABSTRACT To discharge waste liquid containing radioactive iodine into sewage systems, long-term storage or dilution with a large amount of water may be required until the radioactivity concentration reduces below the standard value. Processing the waste liquid could be easier if radioactive iodine could be separated from the water. This study verified the effectiveness of superabsorbent polymer and α-cyclodextrin as treatment agents to separate radioactive iodine from waste liquids. Sodium iodide (Na125I) was added to purified water and artificial urine to prepare simulated waste liquids containing iodine equivalent to the urine of patients treated with radioactive iodine. The as-prepared simulated waste liquid was poured into a container with superabsorbent polymer and left for 90 d. The residual iodine rate in the simulated waste liquid was estimated by measuring 125I radioactivity. When the water was sufficiently dried, residual iodine rates on day 15 were 0.102 and 0.884 in the simulated waste liquids comprising purified water and artificial urine, respectively. The simulated waste liquid comprising purified water with 5% α-cyclodextrin absorbed by 1 g of superabsorbent polymer had a residual rate of 0.980. Moreover, the residual rate of simulated waste liquid comprising artificial urine with 2% α-cyclodextrin absorbed by 1 g of SAP was 0.949. Superabsorbent polymer combined with α-cyclodextrin was an effective treatment agent for separating radioactive iodine from waste liquids.
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Affiliation(s)
- Masahiro Hirota
- Research Center for Advanced Science and technology, Shinshu University
| | | | | | | | | | - Shigeki Ito
- Faculty of Life Sciences, Kumamoto University
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Eissa F, Ezz El-Dein A. Irradiated and radioactively contaminated foods: Analysis of EU RASFF notifications from 1997 to 2022. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2023; 270:107315. [PMID: 37866318 DOI: 10.1016/j.jenvrad.2023.107315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 10/24/2023]
Abstract
Food irradiation technique is an authorized tool used on a commercial scale in many countries to preserve different types of foodstuffs from deterioration caused by microorganisms, insects, and metabolic activity to prolong their shelf life without leaving any residual effect on processed foods, unlike preservatives and pesticides. This study was carried out to analyse the EU Rapid Alert System for Food and Feed (RASFF) notifications on food radiation from 1997 to 2022 in order to identify the most frequently reported products, their origin countries and associated reasons for notification, as well as the most notifying countries, product categories, notification classification, risk decisions, and actions taken. A total of 488 notifications were recorded during this time period. China was the most frequently notified origin country, accounting for 19.88% of all notifications, followed by the United States (11.68%), Russia (7.99%), Vietnam (7.17%), and Poland (5.53%). The top notified product categories were "dietetic foods, food supplements, and fortified foods" (37.09%), followed by fruits and vegetables (23.16%), herbs and spices (8.81%), and prepared dishes and snacks (5.53%). The top 5 notified products were food supplements (25.00%), mushrooms (20.70%), noodles (7.58%), tea (4.51%), and spices (3.69%). The four main reasons for food radiation notifications were unauthorized irradiation (57.58%), too high levels of radioactivity (22.34%), unlabeled irradiation (19.47%), and unauthorized facilities (14.96%). Too many notifications included more than one reason for the notification. Out of 109 notifications related to too-high levels of radioactivity (up to 10755 Bq/kg), 101 were due to the presence of 137Cs, 134Cs, 60Co, and 48Cd in mushrooms, mainly originating from Poland (25), Bulgaria (24), Ukraine (15), and Belarus (12). Such studies provide the necessary data to ensure food safety and encourage countries to implement comprehensive procedures to protect consumers health.
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Affiliation(s)
- Fawzy Eissa
- Environment and Bio-agriculture Department, Faculty of Agriculture, Al-Azhar University, 11884, Nasr City, Cairo, Egypt.
| | - Asmaa Ezz El-Dein
- Department of Food Irradiation, National Centre for Radiation Research and Technology (NCRRT), Atomic Energy Authority (AEA), Nasr City, Cairo, Egypt
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Firat A, Unal E. Prediction of cytology-histology discrepancy when Bethesda cytology reports benign results for thyroid nodules in women: with special emphasis on pregnancy. Libyan J Med 2023; 18:2258670. [PMID: 37731357 PMCID: PMC10515660 DOI: 10.1080/19932820.2023.2258670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 09/08/2023] [Indexed: 09/22/2023] Open
Abstract
Objectives: Benign category of Bethesda classification is generally well known to carry a false-negative rate of 0-3%. The current study was designed to investigate the rate of false-negative cytology in patients who underwent thyroidectomy for presumably benign thyroid diseases. Predictive risk factors for false results and malignancy were evaluated along with cytology-histology discrepant cases.Materials and methods: Females who underwent thyroidectomy between May 2014 and December 2022 were included. Demographics, ultrasound (US) features, fine-needle aspiration (FNA) diagnosis, surgical indications and outcomes, final histology reports, risk factors, and malignancy rate were recorded. Cytology-histology discrepant cases were further evaluated for interpretation errors and risk factors. Statistical analyses were performed using Fisher's exact and Mann-Whitney U tests.Results: Of 581 women with a benign thyroid disease who underwent thyroidectomy, 91 was diagnosed as incidental carcinoma (15.6%) and most was T1a (4.9 ± 2.7 mm, 95.6%). Final histology reports revealed mostly papillary carcinoma (93.4%). Predictors of malignancy such as age, family history, previous radiation exposure, and iodine-deficient diet did not help in risk stratification (p > 0.05, for each). However, FNA taken during pregnancy was determined as a risk factor (n = 7, 7.6%, p < 0.05) since it may cause a delay in diagnosis. Cytology-histology discrepant cases were seen to be mostly due to sampling errors (45%, p < 0.05), followed by misinterpretations (37.3%, p < 0.05). There was no reason for discrepancy in 17.5%, and this was linked to inherent nature of thyroid nodule with overlapping cytologic features. Best identifiable risk factor for misinterpretation was pregnancy as well (n = 5, 14.7%, p < 0.05).Conclusions: Risk of malignancy in a presumably benign thyroid disease should not be ignored. Radiology-cytology correlation by an experienced dedicated team may help in decreasing sampling errors. Physiologic changes caused by pregnancy may shade malignant transformation in thyrocytes, and it would be appropriate to be cautious about benign FNA taken during this period.
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Affiliation(s)
- Aysun Firat
- Instructor in Obstetrics and Gynecology, Departments of General Surgery, and Obstetrics and Gynecology, University of Health Sciences Turkey, Istanbul, Turkey
| | - Ethem Unal
- General Surgery and Surgical Oncology, Departments of General Surgery, and Obstetrics and Gynecology, University of Health Sciences Turkey, Istanbul, Turkey
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Parente P, Melnyk A, Lombardo P, Villani L, Grossi A, Goletti M, Barbara A, Santone G. Demographic and epidemiological characteristics of Ukrainian refugees in an Italian Local Health Authority. Eur J Public Health 2023; 33:815-820. [PMID: 37552052 PMCID: PMC10567240 DOI: 10.1093/eurpub/ckad130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2023] Open
Abstract
BACKGROUND The Russian invasion of Ukraine caused millions of Ukrainian refugees to flee to other nations. To provide the most appropriate assistance, host nations necessitate up-to-date information regarding Ukrainian refugee's demographic and epidemiological conditions. We aim to investigate the demographic composition, the COVID-19 vaccinations performed, specialist care provided and the prevalence of non-communicable diseases (NCDs) in refugees assisted by an Italian Local Health Authority (LHA). METHODS We conducted a retrospective cross-sectional analysis from March to June 2022, analyzing the demographic and epidemiological status of Ukrainians. Statistical analyses were carried out to assess possible associations between NCDs distribution, age and gender. RESULTS LHA Roma 1 assisted 9349 Ukrainian refugees. Of these, 2784 (29.8%) were males and 6565 (70.2%) were females, with a median age of 25 years. Two thousand four hundred and eighty-five Ukrainian refugees were vaccinated against COVID-19. Among them, 401 (16.1%) had at least one NCD. The most frequent groups of diseases were related to the circulatory system (50.6%), the endocrine system (24.9%), and mental and behavioral disorders (6.5%). CONCLUSION Refugees need healthcare services targeted mainly towards minors and females. It is essential to analyze and monitor the demographic and epidemiological conditions to provide evidence about patient management and the best care integrated into the health service of host countries.
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Affiliation(s)
| | - Andriy Melnyk
- Section of Hygiene, University Department of Life Sciences and Public Health, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Paolo Lombardo
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Leonardo Villani
- Local Health Authority Roma 1, Rome, Italy
- Section of Hygiene, University Department of Life Sciences and Public Health, Università Cattolica del Sacro Cuore, Rome, Italy
| | | | | | - Andrea Barbara
- Local Health Authority Roma 1, Rome, Italy
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
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Cheng SY, Vasko V, Jensen KE. Editorial: Translational research in thyroid cancer, Volume II. Front Endocrinol (Lausanne) 2023; 14:1223976. [PMID: 37383388 PMCID: PMC10299732 DOI: 10.3389/fendo.2023.1223976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 05/31/2023] [Indexed: 06/30/2023] Open
Affiliation(s)
- Sheue-yann Cheng
- Laboratory of Molecular Biology, National Cancer Institute, Bethesda, MD, United States
| | - Vasyl Vasko
- Department of Pediatrics, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Kirk Ernest Jensen
- Department of Pediatrics, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
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Nishi K, Hirota M, Higaki S, Shiraishi S, Kudo T, Matsuda N, Ito S. Reduction of thyroid radioactive iodine exposure by oral administration of cyclic oligosaccharides. Sci Rep 2023; 13:6979. [PMID: 37117274 PMCID: PMC10147713 DOI: 10.1038/s41598-023-34254-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 04/26/2023] [Indexed: 04/30/2023] Open
Abstract
Alpha-cyclodextrin, a six D-glucose cyclic oligosaccharide, has several applications in food and pharmaceuticals, but has also been reported to retain iodine in a stable manner for 16 months. Radioactive iodine, which may cause thyroid cancer and hypofunction, must be properly managed. If the absorption of radioactive iodine is suppressed, it can be expected to lead to a reduction in thyroid exposure. This study clarified the inhibition of radioactive iodine absorption by the oral administration of α-cyclodextrin in a murine model using direct measurement of single photon emission computed tomography. The uptake of radioactive iodine into the thyroid gland in mice administered with radioactive iodine and an α-cyclodextrin solution was approximately 40% lower after 24 h. The finding that oral uptake of α-cyclodextrin has an inhibitory effect on the transfer of radioactive iodine to the thyroid gland has potential for application in many fields such as food, pharmaceuticals, nuclear emergency preparedness, and medicine.
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Affiliation(s)
- Kodai Nishi
- Department of Radioisotope Medicine, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan
| | - Masahiro Hirota
- Research Center for Supports to Advanced Sciences, Shinshu University, Matsumoto, Japan
| | - Shogo Higaki
- Isotope Science Center, The University of Tokyo, Tokyo, Japan
| | - Shinya Shiraishi
- Department of Radiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Takashi Kudo
- Department of Radioisotope Medicine, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan
| | - Naoki Matsuda
- Department of Radiation Biology and Protection, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan
| | - Shigeki Ito
- Department of Medical Radiation Sciences, Faculty of Life Sciences, Kumamoto University, 4-24-1 Kuhonji Chu-ku, Kumamoto City, 862-0976, Japan.
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Nedić O. Iodine: Physiological importance and food sources. EFOOD 2023. [DOI: 10.1002/efd2.63] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
Affiliation(s)
- Olgica Nedić
- Department of Metabolism, Institute for the Application of Nuclear Energy (INEP) University of Belgrade Belgrade Republic of Serbia
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Asmussen RM, Turner J, Chong S, Riley BJ. Review of recent developments in iodine wasteform production. Front Chem 2022; 10:1043653. [PMID: 36618856 PMCID: PMC9816813 DOI: 10.3389/fchem.2022.1043653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 12/05/2022] [Indexed: 12/24/2022] Open
Abstract
Radioiodine capture and immobilization is not only important to consider during the operation of reactors (i.e., I-131), during nuclear accidents (i.e., I-131 and I-129) or nuclear fuel reprocessing (i.e., I-131 and I-129), but also during disposal of nuclear wastes (i.e., I-129). Most disposal plans for I-129-containing waste forms (including spent nuclear fuel) propose to store them in underground repositories. Here, iodine can be highly mobile and, given its radiotoxicity, needs to be carefully managed to minimize long-term environmental impacts arising from disposal. Typically, any process that has been used to capture iodine from reprocessing or in a reactor is not suitable for direct disposal, rather conversion into a wasteform for disposal is required. The objectives of these materials are to use either chemical immobilization or physical encapsulation to reduce the leaching of iodine by groundwaters. Some of the more recent ideas have been to design capture materials that better align with disposal concepts, making the industrial processing requirements easier. Research on iodine capture materials and wasteforms has been extensive. This review will act as both an update on the state of the research since the last time it was comprehensively summarized, and an evaluation of the industrial techniques required to create the proposed iodine wasteforms in terms of resulting material chemistry and applicability.
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Affiliation(s)
- R. Matthew Asmussen
- Pacific Northwest National Laboratory, Richland, WA, United States,*Correspondence: R. Matthew Asmussen, ; Joshua Turner,
| | - Joshua Turner
- National Nuclear Laboratory, Sellafield, Cumbria, United Kingdom,*Correspondence: R. Matthew Asmussen, ; Joshua Turner,
| | - Saehwa Chong
- Pacific Northwest National Laboratory, Richland, WA, United States
| | - Brian J. Riley
- Pacific Northwest National Laboratory, Richland, WA, United States
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El-Benhawy SA, Fahmy EI, Mahdy SM, Khedr GH, Sarhan AS, Nafady MH, Yousef Selim YA, Salem TM, Abu-Samra N, El Khadry HA. Assessment of thyroid gland hormones and ultrasonographic abnormalities in medical staff occupationally exposed to ionizing radiation. BMC Endocr Disord 2022; 22:287. [PMID: 36404320 PMCID: PMC9677629 DOI: 10.1186/s12902-022-01196-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Accepted: 11/02/2022] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Ionizing radiation (IR) is high-energy radiation that has the potential to displace electrons from atoms and break chemical bonds. It has the ability to introduce mutations, DNA strand breakage, and cell death. Being a radiosensitive organ, exposure of the thyroid gland to IR can lead to significant changes in its function. AIM OF THE WORK Was to measure the levels of thyroid hormones panel and ultrasonography abnormalities in medical staff occupationally exposed to IR. SUBJECTS AND METHODS A total of 120 subjects were divided into three main groups: Group I: radiation-exposed workers occupationally exposed to radioiodine (131I) (n = 40), Group II: radiation-exposed workers occupationally exposed to X-ray (n = 40), and Group III: non-exposed healthy professionals matched in age and sex with the previous groups (n = 40). Thyroid hormones panel including free triiodothyronine (fT3), free thyroxine (fT4), thyroid-stimulating hormone (TSH), anti-thyroperoxidase antibodies (anti-TPO), and thyroglobulin (Tg) were measured. Thyroid ultrasonography was performed. Oxidative stress markers such as malondialdehyde (MDA), hydrogen peroxide (H2O2), and total antioxidant capacity (TAC) were measured. RESULTS Group I had significantly higher fT3 levels than the control group. fT3 levels were considerably higher, while TSH was substantially lower in group II participants than in the control group. Tg was markedly lower in radiation-exposed workers. However, anti-TPO levels in radiation-exposed workers were significantly higher than in the control group. MDA and H2O2 were substantially higher; TAC was significantly lower in radiation-exposed workers compared to the control group. According to ultrasonographic examination, thyroid volume and the percentage of thyroid nodules in all radiation workers were significantly higher than in the control group. CONCLUSION Despite low exposure doses, occupational exposure to IR affects the thyroid hormones and links with a higher likelihood of developing thyroid immune diseases.
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Affiliation(s)
- Sanaa A. El-Benhawy
- Radiation Sciences Department, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Enayat I. Fahmy
- Radiation Sciences Department, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Sherien M. Mahdy
- Nuclear Medicine and thyroid gland Department, Naser Institute for Research and Treatment, Nasr City, Egypt
| | - Galal H. Khedr
- Radiology and Medical Imaging, Faculty of Applied Medical Sciences, Misr University for Science & Technology, Giza, Egypt
| | - Alyaa S. Sarhan
- Radiology and Medical Imaging, Faculty of Applied Medical Sciences, University of 6 October, Giza, Egypt
| | - Mohamed H. Nafady
- Radiology and Medical Imaging, Faculty of Applied Medical Sciences, Misr University for Science & Technology, Giza, Egypt
| | - Yousef A. Yousef Selim
- Radiology and Medical Imaging, Faculty of Applied Medical Sciences, Misr University for Science & Technology, Giza, Egypt
| | - Tarek M. Salem
- Department of Internal Medicine, (Endocrinology Unit), Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Nehal Abu-Samra
- Department of Basic Sciences, Faculty of Physical Therapy, Pharos University, Alexandria, Egypt
| | - Hany A. El Khadry
- Applied Medical Chemistry Department, Medical Research Institute, Alexandria University, Alexandria, Egypt
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Horgan D, Führer-Sakel D, Soares P, Alvarez CV, Fugazzola L, Netea-Maier RT, Jarzab B, Kozaric M, Bartes B, Schuster-Bruce J, Dal Maso L, Schlumberger M, Pacini F. Tackling Thyroid Cancer in Europe—The Challenges and Opportunities. Healthcare (Basel) 2022; 10:healthcare10091621. [PMID: 36141235 PMCID: PMC9498891 DOI: 10.3390/healthcare10091621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/19/2022] [Accepted: 08/23/2022] [Indexed: 11/16/2022] Open
Abstract
Thyroid cancer (TC) is the most common malignancy of the endocrine system that affects the thyroid gland. It is usually treatable and, in most cases, curable. The central issues are how to improve knowledge on TC, to accurately identify cases at an early stage that can benefit from effective intervention, optimise therapy, and reduce the risk of overdiagnosis and unnecessary treatment. Questions remain about management, about treating all patients in referral centres, and about which treatment should be proposed to any individual patient and how this can be optimised. The European Alliance for Personalised Medicine (EAPM) hosted an expert panel discussion to elucidate some of the challenges, and to identify possible steps towards effective responses at the EU and member state level, particularly in the context of the opportunities in the European Union’s evolving initiatives—notably its Beating Cancer Plan, its Cancer Mission, and its research funding programmes. Recommendations emerging from the panel focus on improved infrastructure and funding, and on promoting multi-stakeholder collaboration between national and European initiatives to complement, support, and mutually reinforce efforts to improve patient care.
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Affiliation(s)
- Denis Horgan
- European Alliance for Personalised Medicine, 1040 Brussels, Belgium
- Correspondence:
| | - Dagmar Führer-Sakel
- Department of Endocrinology, Diabetes and Metabolism, Endocrine Tumour Center at West German Cancer Center, University Hospital Essen, University of Duisburg-Essen, 45122 Duisburg, Germany
| | - Paula Soares
- Instituto de Inovação e Investigação em Saúde/Institute of Molecular Pathology and Immunology of University of Porto (I3S/IPATIMUP), 4200-465 Porto, Portugal
- Faculty of Medicine of the University of Porto, 4200-319 Porto, Portugal
| | - Clara V. Alvarez
- Neoplasia & Endocrine Differentiation, Centro de Investigación en Medicina Molecular y Enfermedades Crónicas (CIMUS), University of Santiago de Compostela (USC), 15782 Santiago de Compostela, Spain
- Instituto de Investigacion Sanitaria (IDIS), 15706 Santiago de Compostela, Spain
| | - Laura Fugazzola
- Division of Endocrine and Metabolic Diseases, IRCCS Istituto Auxologico Italiano, 20145 Milan, Italy
- Department of Pathophysiology and Transplantation, University of Milan, 20122 Milan, Italy
| | - Romana T. Netea-Maier
- Division of Endocrinology, Department of Internal Medicine, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Barbara Jarzab
- Department of Nuclear Medicine and Endocrine Oncology, Maria Sklodowska-Curie National Research Institute of Oncology Gliwice Branch, 44-102 Gliwice, Poland
| | - Marta Kozaric
- European Alliance for Personalised Medicine, 1040 Brussels, Belgium
| | - Beate Bartes
- Association Vivre sans Thyroïde, 31490 Léguevin, France
| | - James Schuster-Bruce
- Department of Otolaryngology, Saint George’s University Hospitals NHS Foundation Trust, London SW17 0QT, UK
| | - Luigino Dal Maso
- Cancer Epidemiology Unit, Centro di Riferimento Oncologico di Aviano (CRO), 33081 Aviano, Italy
| | - Martin Schlumberger
- Department of Nuclear Medicine and Endocrine Oncology, Institut Gustave Roussy, Université Paris Saclay, 94805 Villejuif, France
| | - Furio Pacini
- Section of Endocrinology, University of Siena, 53100 Siena, Italy
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Sharifi A, Dinparastisaleh R, Kumar N, Mirsaeidi M. Health effects of radioactive contaminated dust in the aftermath of potential nuclear accident in Ukraine. Front Public Health 2022; 10:959668. [PMID: 36072376 PMCID: PMC9441805 DOI: 10.3389/fpubh.2022.959668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 07/22/2022] [Indexed: 01/24/2023] Open
Affiliation(s)
- Arash Sharifi
- Department of Marine Geosciences, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States,Isobar Science-Beta Analytic, Research and Development Department, Miami, FL, United States
| | - Roshan Dinparastisaleh
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, United States
| | - Naresh Kumar
- Department of Public Health Sciences, University of Miami, Miami, FL, United States
| | - Mehdi Mirsaeidi
- Division of Pulmonary and Critical Care Medicine, College of Medicine-Jacksonville, University of Florida, Jacksonville, FL, United States,*Correspondence: Mehdi Mirsaeidi
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15
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Jensen K, Vasko V. Inadvertent Radiation Exposures in Combat Zones: Risk of Contamination and Radiobiologic Consequences. Mil Med 2022; 187:303-307. [PMID: 35829639 DOI: 10.1093/milmed/usac213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/24/2022] [Accepted: 07/01/2022] [Indexed: 11/15/2022] Open
Abstract
On February 24, 2022, Russia began a military invasion of Ukraine. Missile and air strikes were reported throughout the country, shortly followed by a large ground invasion from multiple directions. Four major theaters developed: the Kyiv offensive, the Northeastern Ukraine offensive, the Eastern Ukraine offensive, and the Southern Ukraine offensive, with continued missile and air strikes far into Western Ukraine. Advancing Russian military units launched an attack and captured the Chernobyl nuclear station. Russian troops dug trenches into the area commonly known as the "Red Forest," violating the established radiation safety measures and threatening security within the Chernobyl Exclusion Zone. The placement of military units in such close proximity to the station also sparked concerns of possible damage occurring to the containment vessel constructed around the station's wrecked fourth reactor. There are 15 operating nuclear reactors in Ukraine. Each is vulnerable to an attack or sabotage that could precipitate a malfunction and possible release of radioactive isotopes. In this short commentary, we will discuss radiobiologic data obtained after the analysis of historical nuclear power plant (NPP) accidents and emphasize new challenges for nuclear security when NPPs are found and are possible targets within a conflict zone.
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Affiliation(s)
- Kirk Jensen
- Department of Pediatrics, Uniformed Services University, Bethesda, MD 20814, USA
| | - Vasyl Vasko
- Department of Pediatrics, Uniformed Services University, Bethesda, MD 20814, USA
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16
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Willems P, Carr Z, Dreger S, Zeeb H, Tchilian-Teng N, Smith V, Van Bladel L. Survey on national practices regarding iodine thyroid blocking in 2016-2017. ENVIRONMENTAL ADVANCES 2022; 8:None. [PMID: 35782592 PMCID: PMC9192754 DOI: 10.1016/j.envadv.2022.100252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 05/20/2022] [Accepted: 06/03/2022] [Indexed: 06/15/2023]
Abstract
Severe nuclear accidents may lead to a release of radioactivity, including radioactive iodine, into the environment. The thyroid gland in the human body needs natural or stable iodine to function properly and this iodine is normally absorbed in small quantities from food. Following a release of radioactive iodine from a nuclear or radiological accident, the body will absorb and accumulate the radioactive iodine in the thyroid gland. This increases the risk of thyroid cancer, especially in children. Since the thyroid gland cannot distinguish between radioactive and stable iodine, stable iodine can be taken to prevent the absorption of radioiodine by the thyroid in the event of a nuclear emergency. This is referred to as Iodine Thyroid Blocking (ITB). In 2017, the World Health Organization published revised guidelines entitled 'Iodine Thyroid Blocking: guidelines for use in planning for and responding to radiological and nuclear emergencies'. The purpose of these guidelines is to support Member States in planning for and implementation of ITB before and during a radiation emergency. To enable the monitoring and measurement of the impact of a specific recommended intervention, a baseline should be established against which the impact will be measured over a certain period of time. With that in mind, a global WHO survey of national policies on ITB was carried out in 2016-2017. Here, an overview of some core findings of this survey is provided.
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Affiliation(s)
- Petra Willems
- Federal Agency for Nuclear Control, Brussels, Belgium
| | - Zhanat Carr
- Department of Environment, World Health Organization, Climate Change and Health, Geneva, Switzerland
| | - Steffen Dreger
- Leibniz-Institute for Prevention Research and Epidemiology – BIPS, Bremen, Germany
| | - Hajo Zeeb
- Leibniz-Institute for Prevention Research and Epidemiology – BIPS, Bremen, Germany
- Health Sciences, University of Bremen, Germany
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17
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Masiuk S, Chepurny M, Buderatska V, Ivanova O, Boiko Z, Zhadan N, Hatch M, Cahoon EK, Zamotayeva G, Shpak V, Tronko M, Drozdovitch V. Assessment of internal exposure to 131I and short-lived radioiodine isotopes and associated uncertainties in the Ukrainian cohort of persons exposed in utero. JOURNAL OF RADIATION RESEARCH 2022; 63:364-377. [PMID: 35301522 PMCID: PMC9124623 DOI: 10.1093/jrr/rrac007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/17/2021] [Indexed: 06/14/2023]
Abstract
This study revised the thyroid doses for 2582 Ukrainian in utero cohort members exposed to Chornobyl fallout (the Ukrainian in utero cohort) based on revision of: (i) 131I thyroid activity measured in the Ukrainian population, (ii) thyroid dosimetry system for entire Ukraine, and (iii) 131I ground deposition densities in Ukraine. Other major improvements included: (i) assessment of uncertainties in the thyroid doses considering shared and unshared error, and (ii) accounting for intake of short-lived radioisotopes of tellurium and iodine (132Te+132I and 133I). Intake of 131I was the major pathway for thyroid exposure, its median contribution to the thyroid dose was 97.4%. The mean prenatal and postnatal thyroid dose from 131I was 87 mGy (median = 17 mGy), higher than previous deterministic dose of 72 mGy (median = 12 mGy). For 39 individuals (1.5%) the dose exceeded 1.0 Gy, while the highest dose among the cohort members was 2.7 Gy. The geometric standard deviation (GSD) of 1000 individual stochastic doses varied from 1.9 to 5.2 with a mean of 3.1 and a median of 3.2. The lowest uncertainty (mean GSD = 2.3, median GSD = 2.2) was found for the subjects whose mothers were measured for 131I thyroid activity, while for individuals, whose mothers were not measured, the mean and median GSDs were 3.4. Uncertainties in thyroid doses were driven by shared errors associated with the parameters of the ecological model.
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Affiliation(s)
- Sergii Masiuk
- State Institution “National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine”, Kyiv, 04050, Ukraine
| | - Mykola Chepurny
- State Institution “National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine”, Kyiv, 04050, Ukraine
| | - Valentyna Buderatska
- State Institution “National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine”, Kyiv, 04050, Ukraine
| | - Olga Ivanova
- State Institution “National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine”, Kyiv, 04050, Ukraine
| | - Zulfira Boiko
- State Institution “National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine”, Kyiv, 04050, Ukraine
| | - Natalia Zhadan
- State Institution “National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine”, Kyiv, 04050, Ukraine
| | - Maureen Hatch
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD 20892, USA
| | - Elizabeth K Cahoon
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD 20892, USA
| | - Galyna Zamotayeva
- V.P. Komisarenko Institute of Endocrinology and Metabolism of the National Academy of Medical Sciences of Ukraine, Kyiv, 04114, Ukraine
| | - Victor Shpak
- V.P. Komisarenko Institute of Endocrinology and Metabolism of the National Academy of Medical Sciences of Ukraine, Kyiv, 04114, Ukraine
| | - Mykola Tronko
- V.P. Komisarenko Institute of Endocrinology and Metabolism of the National Academy of Medical Sciences of Ukraine, Kyiv, 04114, Ukraine
| | - Vladimir Drozdovitch
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD 20892, USA
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18
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Sparse-View Neutron CT Reconstruction Using a Modified Weighted Total Difference Minimization Method. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app112210942] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Indirect neutron imaging is an effective method for nondestructive testing of spent nuclear fuel elements. Considering the difficulty of obtaining experimental data in a high-radiation environment and the characteristic of high noise of neutron images, it is difficult to use the traditional FBP algorithm to recover the complete information of the sample based on the limited projection data. Therefore, it is necessary to develop the sparse-view CT reconstruction algorithm for indirect neutron imaging. In order to improve the quality of the reconstruction image, an iterative reconstruction method combining SIRT, MRP, and WTDM regularization is proposed. The reconstruction results obtained by using the proposed method on simulated data and actual neutron projection data are compared with the results of four other algorithms (FBP, SIRT, SIRT-TV, and SIRT-WTDM). The experimental results show that the SIRT-MWTDM algorithm has great advantages in both objective evaluation index and subjective observation in the reconstruction image of simulated data and neutron projection data.
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19
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Fridman M, Krasko O, Levin L, Veyalkin I, Lam AKY. Comparative pathological characteristics of papillary thyroid carcinoma with second primary non-thyroid malignancies in the region affected by the Chernobyl accident. Pathol Res Pract 2021; 228:153658. [PMID: 34749211 DOI: 10.1016/j.prp.2021.153658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 10/09/2021] [Accepted: 10/12/2021] [Indexed: 10/20/2022]
Abstract
The aim was to study the pathological features of papillary thyroid carcinoma diagnosed with or before second primary malignancy in patients exposed to post-Chernobyl exposure. The patients selected (n = 6559) were those exposed to radiation at the age of ≤ 18 years old and developed papillary thyroid carcinoma during the years 1990-2020. Of these, 2.1% (n = 140) had second primary malignancies. To compare the histopathological characteristics of papillary thyroid carcinoma in the group under analysis, 91% (n = 128) with sufficient data were included in further analysis. The control group was formed by matching patients with age at exposure to radiation, age at surgery, gender, and place of residence. Median age at exposure was 14 years old for both groups. Besides, no difference in tumour extension and histological features of papillary thyroid carcinoma was noted between patients with synchronous or metachronous primary malignant tumours. Nevertheless, the time lag to the diagnosis of papillary thyroid carcinoma was shortened in the group with metachronous when compared to patients with synchronous second primaries (p < 0.001). Independent differences between patients with second primaries and their matched peers included tumour size {OR (95%CI) = 0.89 (0.45; 1.04)}, multiple tumours {OR (95% CI) = 1.46 (0.86; 2.42)}, lymphatic vessel invasion (OR (95%CI) 0.92 (0.61; 1.53)), blood vessel invasion (OR (95%CI) 0.41 (0.10; 1.23) and presence of numerous psammomas (OR (95%CI) 0.73 (0.39; 1.31)). The possible influence of radiative iodine treatment for development of second primaries was analysed for the group of patients with metachronous malignancies using the same approach (84 patients were compared to 252 matched patients). Independent differences also included tumour size {OR (95% CI) 0.77 (0.45; 1.30)}, lymphatic vessel invasion {OR (95%CI) 0.75(0.43; 1.28)}, blood vessel invasion {OR (95%CI) 0.17 (0.01; 0.87)}. Besides, multiple tumours were revealed more frequently in patients with metachronous primaries (OR (95%CI) 1.92 (1.0; 3.62)). To conclude, patients exposed to Chernobyl irradiation with the development of papillary thyroid carcinoma and second primary malignancy have less biological aggressive pathological characteristics of their thyroid cancers. Accordingly, these patients were less frequently treated with post-surgical radioactive iodine. Thus, 131I-irradiation may have negligible impact on the development of second primaries.
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Affiliation(s)
- Mikhail Fridman
- Republican Centre for Thyroid Tumours, Department of Pathology, Nezavisimosty Av., 64, 220013 Minsk, Belarus.
| | - Olga Krasko
- United Institute of Informatics Problems, National Academy of Sciences of Belarus, Surganova St. 6, 220012 Minsk, Belarus.
| | - Leonid Levin
- N.N. Alexandrov National Cancer Centre of Belarus, 223040 Lesnoy, Belarus.
| | - Ilya Veyalkin
- Republican Scientific Centre for Radiation Medicine and Human Ecology, Illich, 290, Gomel 246040, Belarus.
| | - Alfred King-Yin Lam
- School of Medicine and Dentistry, Griffith University, Gold Coast, QLD 4222, Australia; Faculty of Medicine, The University of Queensland, Herston, QLD 4006, Australia; Pathology Queensland, Gold Coast University Hospital, Southport, QLD 4215, Australia.
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20
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Drozdovitch V, Minenko V, Kukhta T, Viarenich K, Trofimik S, Rogounovitch T, Nakayama T, Drozd V, Veyalkin I, Mitsutake N, Ostroumova E, Saenko V. Thyroid dose estimates for the genome-wide association study of thyroid cancer in persons exposed in Belarus to 131I after the Chernobyl accident. JOURNAL OF RADIATION RESEARCH 2021:rrab082. [PMID: 34536956 DOI: 10.1093/jrr/rrab082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 07/26/2021] [Indexed: 06/13/2023]
Abstract
The Chernobyl accident on 26 April 1986 led to a sharp increase in thyroid cancer (TC) incidence in the individuals exposed to radiation in childhood. The major risk factor for TC was exposure to Iodine-131 (131I). Here, we estimated the thyroid doses due to 131I intake for 2041 participants of the genome-wide association study of TC in Belarusian people exposed to radioactive fallout from the Chernobyl accident. The following parameter-values specially developed in this study were used to estimate individual thyroid doses: (i) scaling factors for adjustment of the model-based doses, (ii) age and gender diet to characterize 131I intake, and (iii) area-, age- and gender-specific S-values for the thyroid gland per 131I decay in the thyroid. The most reliable doses were calculated for 103 people with measured 131I thyroid activity (the arithmetic mean of 1.2 Gy, median 0.52 Gy), and 275 individuals with detailed residential history and dietary data (the arithmetic mean of 0.41 Gy, median 0.24 Gy). The arithmetic mean of thyroid doses among all study participants was 0.23 Gy (median 0.082 Gy); the highest individual dose was 9.0 Gy. Special attention was paid to the reliability and validity of the obtained estimates, in particular for the individuals without 131I thyroid activity measurements and individual data on residential history and diet, by comparing those with the doses from other post-Chernobyl epidemiological studies. Overall, the doses estimated in the current study were in reasonable agreement with previously reported thyroid doses. These doses will be used in the genome-wide association study of TC in people exposed in Belarus to 131I after the Chernobyl accident.
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Affiliation(s)
- Vladimir Drozdovitch
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD 20892, USA
| | - Victor Minenko
- Institute for Nuclear Problems, Belarusian State University, Minsk, 220030, Belarus
| | - Tatiana Kukhta
- United Institute of Informatics Problems, National Academy of Sciences of Belarus, Minsk, 220012, Belarus
| | - Kiryl Viarenich
- Institute for Nuclear Problems, Belarusian State University, Minsk, 220030, Belarus
| | - Sergey Trofimik
- Institute for Nuclear Problems, Belarusian State University, Minsk, 220030, Belarus
| | - Tatiana Rogounovitch
- Department of Radiation Medical Sciences, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, 852-8523, Japan
| | - Takafumi Nakayama
- Department of Molecular Medicine, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, 852-8523, Japan
| | - Valentina Drozd
- The International Fund "Help for Patients with Radiation-Induced Thyroid Cancer 'Arnica'", Minsk, 220005, Belarus
| | - Ilya Veyalkin
- Republican Research Center for Radiation Medicine and Human Ecology, Gomel, 246040, Belarus
| | - Norisato Mitsutake
- Department of Radiation Medical Sciences, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, 852-8523, Japan
| | - Evgenia Ostroumova
- International Agency for Research on Cancer, WHO, 69372, Lyon CEDEX 08, France
| | - Vladimir Saenko
- Department of Radiation Molecular Epidemiology, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, 852-8523, Japan
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21
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A Search for Causes of Rising Incidence of Differentiated Thyroid Cancer in Children and Adolescents after Chernobyl and Fukushima: Comparison of the Clinical Features and Their Relevance for Treatment and Prognosis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18073444. [PMID: 33810323 PMCID: PMC8037740 DOI: 10.3390/ijerph18073444] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/21/2021] [Accepted: 03/23/2021] [Indexed: 12/28/2022]
Abstract
The incidence of differentiated thyroid cancer (DTC) is steadily increasing globally. Epidemiologists usually explain this global upsurge as the result of new diagnostic modalities, screening and overdiagnosis as well as results of lifestyle changes including obesity and comorbidity. However, there is evidence that there is a real increase of DTC incidence worldwide in all age groups. Here, we review studies on pediatric DTC after nuclear accidents in Belarus after Chernobyl and Japan after Fukushima as compared to cohorts without radiation exposure of those two countries. According to the Chernobyl data, radiation-induced DTC may be characterized by a lag time of 4–5 years until detection, a higher incidence in boys, in children of youngest age, extrathyroidal extension and distant metastases. Radiation doses to the thyroid were considerably lower by appr. two orders of magnitude in children and adolescents exposed to Fukushima as compared to Chernobyl. In DTC patients detected after Fukushima by population-based screening, most of those characteristics were not reported, which can be taken as proof against the hypothesis, that radiation is the (main) cause of those tumors. However, roughly 80% of the Fukushima cases presented with tumor stages higher than microcarcinomas pT1a and 80% with lymph node metastases pN1. Mortality rates in pediatric DTC patients are generally very low, even at higher tumor stages. However, those cases considered to be clinically relevant should be followed-up carefully after treatment because of the risk of recurrencies which is expected to be not negligible. Considering that thyroid doses from the Fukushima accident were quite small, it makes sense to assess the role of other environmental and lifestyle-related factors in thyroid carcinogenesis. Well-designed studies with assessment of radiation doses from medical procedures and exposure to confounders/modifiers from the environment as e.g., nitrate are required to quantify their combined effect on thyroid cancer risk.
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