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Ramadhani D, Purnami S, Suvifan VA, Wanandi SI, Wibowo H, Syaifudin M. Preliminary study of chromosome aberrations using Giemsa, two-colour fish, and micronucleus assays in lymphocytes of individuals living in elevated radon concentration areas. RADIATION PROTECTION DOSIMETRY 2023; 199:1508-1515. [PMID: 37721082 DOI: 10.1093/rpd/ncac165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/24/2022] [Accepted: 07/05/2022] [Indexed: 09/19/2023]
Abstract
The frequencies of unstable and stable chromosome aberrations and micronuclei were examined in peripheral blood samples from 10 individuals living in elevated radon concentration areas (Takandeang Village, Mamuju, Indonesia). Blood samples from 10 people living in Topoyo Village were used as a control group. For unstable chromosome aberration analysis, a dicentric chromosome assay was conducted using conventional Giemsa staining. Chromosomal painting of chromosomes 1 and 4 using the fluorescence in situ hybridisation technique was also applied to four subjects to assess the stable chromosome aberration. Our study showed no significant increases across all groups in dicentric and other unstable chromosome aberrations, such as rings and acentric fragments. Translocations were found in one person from Takandeang Village and two Topoyo Village inhabitants. The translocations found in the subjects from Takandeang Village were due more to aging factors than to radon exposure. The number of micronuclei per 1000 binucleus cells in Takandeang Village inhabitants was not significantly different than that in the control group (p = 0.943). A more comprehensive analysis should be conducted in a subsequent study by increasing the number of study donors and the number of metaphases to be analysed in both dicentric chromosome assay and fluorescence in situ hybridisation assays. Such research could provide valid information on the cytogenetic effects of elevated indoor radon exposure.
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Affiliation(s)
- Dwi Ramadhani
- Doctoral Program for Biomedical Sciences, Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6, DKI Jakarta, 10430, Indonesia
- Research Center for Radioisotope, Radiopharmaceutical and Biodosimetry Technology, Research Organization for Nuclear Energy, National Research and Innovation Agency, Jl. Kw. Puspitek Blok NN No. 11, Muncul, Setu, Tangerang, 15314, Indonesia
| | - Sofiati Purnami
- Research Center for Safety, Metrology and Nuclear Quality Technology, Research Organization for Nuclear Energy, National Research and Innovation Agency, Jl. Lebak Bulus Raya No. 49, DKI Jakarta, 12440, Indonesia
| | - Viria Agesti Suvifan
- Research Center for Safety, Metrology and Nuclear Quality Technology, Research Organization for Nuclear Energy, National Research and Innovation Agency, Jl. Lebak Bulus Raya No. 49, DKI Jakarta, 12440, Indonesia
| | - Septelia Inawati Wanandi
- Department of Biochemistry & Molecular Biology, Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6, DKI Jakarta, 10430, Indonesia
| | - Heri Wibowo
- Department of Parasitology, Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6, DKI Jakarta, 10430, Indonesia
| | - Mukh Syaifudin
- Research Center for Radioisotope, Radiopharmaceutical and Biodosimetry Technology, Research Organization for Nuclear Energy, National Research and Innovation Agency, Jl. Kw. Puspitek Blok NN No. 11, Muncul, Setu, Tangerang, 15314, Indonesia
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2
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Sakai A, Tsuyama N, Ohira T, Sugai-Takahashi M, Ohba T, Azami Y, Matsumoto Y, Manabu I, Suzuki S, Sato M, Hosoya M, Ishikawa T, Suzuki S. No increase in translocated chromosomal aberrations, an indicator of ionizing radiation exposure, in childhood thyroid cancer in Fukushima Prefecture. Sci Rep 2023; 13:14254. [PMID: 37652956 PMCID: PMC10471584 DOI: 10.1038/s41598-023-41501-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 08/28/2023] [Indexed: 09/02/2023] Open
Abstract
To investigate the effects of radiation exposure due to the Fukushima nuclear power plant accident, following the disaster Fukushima Prefecture launched thyroid ultrasound examinations of residents who were generally younger than 18 years at the time of the earthquake. As the rate of pediatric thyroid cancer was higher than expected, we conducted biological dose assessment based on the frequency of translocated chromosome (Tr) aberrations using peripheral blood lymphocytes. Tr formation frequency was compared among the thyroid cancer (n = 38, median age 18 years, age range 12-26 years), thyroid-related disease (n = 30, median age 21 years, age range 15-28 years), and healthy controls (n = 31, median age 22 years, age range 20-23 years) groups. Tr aberration frequency was initially significantly higher in the thyroid cancer than in the other two groups; however, differences among the groups disappeared after adjusting for history of CT scan, as 92%, 67%, and 28% of those in the thyroid cancer, thyroid-related disease, and control groups, respectively, had undergone CT previously. Therefore, the significant difference in the initial number of Tr formations is presumably due to radiation exposure from CT. Accordingly, the effects of medical exposure on the chromosomes of children and adolescents should be noted.
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Affiliation(s)
- Akira Sakai
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
| | - Naohiro Tsuyama
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Tetsuya Ohira
- Department of Epidemiology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Misaki Sugai-Takahashi
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Takashi Ohba
- Department of Radiological Sciences, Fukushima Medical University School of Health Sciences, Fukushima, Japan
| | - Yusuke Azami
- Department of Radiation Oncology, Southern Tohoku General Hospital, Sendai, Japan
| | - Yoshiko Matsumoto
- Department of Thyroid and Endocrinology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Iwadate Manabu
- Department of Thyroid and Endocrinology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Satoshi Suzuki
- Department of Thyroid and Endocrinology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Maki Sato
- Department of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Mitsuaki Hosoya
- Department of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Tetsuo Ishikawa
- Department of Radiation Physics and Chemistry, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Shinichi Suzuki
- Department of Thyroid Treatment, Fukushima Medical University School of Medicine, Fukushima, Japan
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3
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Sakai A, Nagao M, Nakano H, Ohira T, Ishikawa T, Hosoya M, Shimabukuro M, Takahashi A, Kazama JJ, Okazaki K, Hayashi F, Yasumura S, Ohto H, Kamiya K. Effects of External Radiation Exposure Resulting From the Fukushima Daiichi Nuclear Power Plant Accident on the Health of Residents in the Evacuation Zones: the Fukushima Health Management Survey. J Epidemiol 2022; 32:S84-S94. [PMID: 36464304 PMCID: PMC9703929 DOI: 10.2188/jea.je20210286] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
Abstract
BACKGROUND Associations have been reported between lifestyle-related diseases and evacuation after the Great East Japan Earthquake (GEJE). However, the relationship between lifestyle-related diseases and the effective radiation dose due to external exposure (EDEE) after the GEJE remains unclear. METHODS From among 72,869 residents of Fukushima Prefecture (31,982 men; 40,887 women) who underwent a comprehensive health check in fiscal year (FY) 2011, the data of 54,087 residents (22,599 men; 31,488 women) aged 16 to 84 years were analyzed. The EDEE data of 25,685 residents with incomplete results from the basic survey, performed to estimate the external radiation exposure dose, were supplemented using multiple imputation. The data were classified into three groups based on EDEE (0 to <1, 1 to <2, and ≥2 mSv groups and associations between the incidence of diseases and EDEE from FY2011 to FY2017 were examined using a Cox proportional hazards model, with FY2011 as the baseline. RESULTS A higher EDEE was associated with a greater incidence of hypertension, diabetes mellitus, dyslipidemia, hyperuricemia, liver dysfunction, and polycythemia from FY2011 to FY2017 in the age- and sex-adjusted model. However, after further adjustment for evacuation status and lifestyle-related factors, the significant associations disappeared. No association was found between EDEE and other lifestyle-related diseases. CONCLUSION EDEE was not directly associated with the incidence of lifestyle-related diseases after the GEJE. However, residents with higher external radiation doses in Fukushima Prefecture might suffer from lifestyle-related diseases related to evacuation and the resultant lifestyle changes.
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Affiliation(s)
- Akira Sakai
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan,Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
| | - Masanori Nagao
- Department of Epidemiology, Fukushima Medical University School of Medicine, Fukushima, Japan,Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
| | - Hironori Nakano
- Department of Epidemiology, Fukushima Medical University School of Medicine, Fukushima, Japan,Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
| | - Tetsuya Ohira
- Department of Epidemiology, Fukushima Medical University School of Medicine, Fukushima, Japan,Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
| | - Tetsuo Ishikawa
- Department of Radiation Physics and Chemistry, Fukushima Medical University School of Medicine, Fukushima, Japan,Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
| | - Mitsuaki Hosoya
- Department of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan,Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
| | - Michio Shimabukuro
- Department of Diabetes, Endocrinology and Metabolism, Fukushima Medical University School of Medicine, Fukushima, Japan,Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
| | - Atsushi Takahashi
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima, Japan,Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
| | - Junichiro J. Kazama
- Department of Nephrology and Hypertension, Fukushima Medical University School of Medicine, Fukushima, Japan,Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
| | - Kanako Okazaki
- Department of Physical Therapy, Fukushima Medical University School of Health Sciences, Fukushima, Japan,Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
| | - Fumikazu Hayashi
- Department of Epidemiology, Fukushima Medical University School of Medicine, Fukushima, Japan,Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
| | - Seiji Yasumura
- Department of Public Health, Fukushima Medical University School of Medicine, Fukushima, Japan,Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
| | - Hitoshi Ohto
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
| | - Kenji Kamiya
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
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Cytogenetic Effects in Patients after Computed Tomography Examination. LIFE (BASEL, SWITZERLAND) 2022; 12:life12121983. [PMID: 36556348 PMCID: PMC9784585 DOI: 10.3390/life12121983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/08/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022]
Abstract
Millions of people around the world are exposed to low doses of ionizing radiation from diagnostic computed tomography (CT) scans. Currently available data on the potential cancer risk after CT scans are contradictory and therefore demand further investigations. The aim of the current study was to obtain estimations of genome damage after CT scans in 42 non-cancer patients and to conduct a comparison of the results with 22 control subjects. The frequency of dicentric ring chromosomes and chromosome breaks was significantly increased in irradiated patients compared to the controls. The distribution of dicentrics among the cells demonstrated non-Poisson distribution that reflected non-uniform and partial-body radiation exposure. A fraction of patients followed Poisson distribution, which is typical for uniform whole-body exposures. Some patients demonstrated a level of dicentrics similar to the control subjects. The individual variations in the frequency and dicentric distribution suggested complex mechanisms of chromosome aberration induction and elimination that could be associated with individual radiosensitivity, as well as previous diagnostics that used ionizing radiation or the redistribution of small fractions of irradiated lymphocytes within the circulatory pull. In conclusion, CT scans may cause genome damage and possible increases in cancer risk. The introduction of a specific follow-up of such patients, especially in the case of repeated CT scans, is suggested.
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Lierová A, Milanová M, Pospíchal J, Novotný J, Storm J, Andrejsová L, Šinkorová Z. BIOLOGICAL EFFECTS OF LOW-DOSE RADIATION FROM CT IMAGING. RADIATION PROTECTION DOSIMETRY 2022; 198:514-520. [PMID: 36005951 DOI: 10.1093/rpd/ncac091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 01/21/2022] [Accepted: 05/18/2022] [Indexed: 06/15/2023]
Abstract
The dramatic rise in diagnostic procedures, radioisotope-based scans and intervention procedures has created a very valid concern regarding the long-term biological consequences from exposure to low doses of ionizing radiation. Despite its unambiguous medical benefits, additional knowledge on the health outcome of its use is essential. This review summarizes the available information regarding the biological consequences of low-dose radiation (LDR) exposure in humans (e.g. cytogenetic changes, cancer risk and radiation-induced cataracts. However, LDR studies remain relatively new and thus an encompassing view of its biological effects and relevant mechanisms in the human body is still needed.
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Affiliation(s)
- Anna Lierová
- Department of Radiobiology, Faculty of Military Health Sciences, University of Defence, Hradec Králové, Czech Republic
- Department of Clinical Subspecialties, Faculty of Health Studies, University of Pardubice, Pardubice, Czech Republic
| | - Marcela Milanová
- Department of Radiobiology, Faculty of Military Health Sciences, University of Defence, Hradec Králové, Czech Republic
| | - Jan Pospíchal
- Department of Clinical Subspecialties, Faculty of Health Studies, University of Pardubice, Pardubice, Czech Republic
| | - Jan Novotný
- Department of Clinical Subspecialties, Faculty of Health Studies, University of Pardubice, Pardubice, Czech Republic
| | - Jaroslav Storm
- Department of Radiobiology, Faculty of Military Health Sciences, University of Defence, Hradec Králové, Czech Republic
- Department of Clinical Subspecialties, Faculty of Health Studies, University of Pardubice, Pardubice, Czech Republic
| | - Lenka Andrejsová
- Department of Radiobiology, Faculty of Military Health Sciences, University of Defence, Hradec Králové, Czech Republic
| | - Zuzana Šinkorová
- Department of Radiobiology, Faculty of Military Health Sciences, University of Defence, Hradec Králové, Czech Republic
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6
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Jin Y, Yaegashi D, Shi L, Ishida M, Sakai C, Yokokawa T, Abe Y, Sakai A, Yamaki T, Kunii H, Nakazato K, Hijioka N, Awai K, Tashiro S, Takeishi Y, Ishida T. DNA Damage Induced by Radiation Exposure from Cardiac Catheterization. Int Heart J 2022; 63:466-475. [PMID: 35650148 DOI: 10.1536/ihj.22-037] [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] [Indexed: 11/18/2022]
Abstract
Almost 40% of medical radiation exposure is related to cardiac imaging or intervention. However, the biological effects of low-dose radiation from medical imaging remain largely unknown. This study aimed to evaluate the effects of ionized radiation from cardiac catheterization on genomic DNA integrity and inflammatory cytokines in patients and operators.Peripheral mononuclear cells (MNCs) were isolated from patients (n = 51) and operators (n = 35) before and after coronary angiography and/or percutaneous coronary intervention. The expression of γH2AX, a marker for DNA double-strand breaks, was measured by immunofluorescence. Dicentric chromosomes (DICs), a form of chromosome aberrations, were assayed using a fluorescent in situ hybridization technique.In the patient MNCs, the numbers of γH2AX foci and DICs increased after cardiac catheterization by 4.5 ± 9.4-fold and 71 ± 122%, respectively (P < 0.05 for both). The mRNA expressions of interleukin (IL)-1α, IL-1β, leukemia inhibitory factor, and caspase-1 were significantly increased by radiation exposure from cardiac catheterization. The increase in IL-1β was significantly correlated with that of γH2AX, but not with the dose area product. In the operators, neither γH2AX foci nor the DIC level was changed, but IL-1β mRNA was significantly increased. The protein expression of IκBα was significantly decreased in both groups.DNA damage was increased in the MNCs of patients, but not of operators, who underwent cardiac catheterization. Inflammatory cytokines were increased in both the patients and operators, presumably through NF-κB activation. Further efforts to reduce radiation exposure from cardiac catheterization are necessary for both patients and operators.
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Affiliation(s)
- Yuichiro Jin
- Department of Cardiovascular Medicine, Fukushima Medical University
| | - Daiki Yaegashi
- Department of Cardiovascular Medicine, Fukushima Medical University
| | - Lin Shi
- Department of Cellular Biology, Research Institute for Radiation Biology and Medicine, Hiroshima University
| | - Mari Ishida
- Department of Cardiovascular Physiology and Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences
| | - Chiemi Sakai
- Department of Cardiovascular Physiology and Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences
| | - Tetsuro Yokokawa
- Department of Cardiovascular Medicine, Fukushima Medical University
| | - Yu Abe
- Department of Radiation Life Sciences, Fukushima Medical University
| | - Akira Sakai
- Department of Radiation Life Sciences, Fukushima Medical University
| | - Takayoshi Yamaki
- Department of Cardiovascular Medicine, Fukushima Medical University
| | - Hiroyuki Kunii
- Department of Cardiovascular Medicine, Fukushima Medical University
| | | | - Naoko Hijioka
- Department of Cardiovascular Medicine, Fukushima Medical University
| | - Kazuo Awai
- Department of Diagnostic Radiology, Hiroshima University Graduate School of Biomedical and Health Sciences
| | - Satoshi Tashiro
- Department of Cellular Biology, Research Institute for Radiation Biology and Medicine, Hiroshima University
| | | | - Takafumi Ishida
- Department of Cardiovascular Medicine, Fukushima Medical University
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Herate C, Brochard P, De Vathaire F, Ricoul M, Martins B, Laurier L, Deverre JR, Thirion B, Hertz-Pannier L, Sabatier L. The effects of repeated brain MRI on chromosomal damage. Eur Radiol Exp 2022; 6:12. [PMID: 35237875 PMCID: PMC8891399 DOI: 10.1186/s41747-022-00264-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 01/14/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Magnetic resonance imaging (MRI) is currently considered a safe imaging technique because, unlike computed tomography, MRI does not expose patients to ionising radiation. However, conflicting literature reports possible genotoxic effects of MRI. We herein examine the chromosomal effects of repeated MRI scans by performing a longitudinal follow-up of chromosomal integrity in volunteers. METHODS This ethically approved study was performed on 13 healthy volunteers (mean age 33 years) exposed to up to 26 3-T MRI sessions. The characterisation of chromosome damage in peripheral blood lymphocytes was performed using the gold-standard biodosimetry technique augmented with telomere and centromere staining. RESULTS Cytogenetic analysis showed no detectable effect after a single MRI scan. However, repeated MRI sessions (from 10 to 20 scans) were associated with a small but significant increase in chromosomal breaks with the accumulation of cells with chromosomal terminal deletions with a coefficient of 9.5% (95% confidence interval 6.5-12.5%) per MRI (p < 0.001). Additional exposure did not result in any further increase. This plateauing of damage suggests lymphocyte turnover. Additionally, there was no significant induction of dicentric chromosomes, in contrast to what is observed following exposure to ionising radiation. CONCLUSIONS Our study showed that MRI can affect chromosomal integrity. However, the amount of damage per cell might be so low that no chromosomal rearrangement by fusion of two deoxyribonucleic breaks is induced, unlike that seen after exposure to computed tomography. This study confirms that MRI is a safe imaging technique.
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Affiliation(s)
- Cecile Herate
- PROCyTox, DRF, French Alternative Energies and Atomic Energy Commission (CEA), Paris-Saclay University, Fontenay-aux-Roses, France
| | - Patricia Brochard
- PROCyTox, DRF, French Alternative Energies and Atomic Energy Commission (CEA), Paris-Saclay University, Fontenay-aux-Roses, France
| | - Florent De Vathaire
- National Institute for Health and Medical Research, Center for Research in Epidemiology and Population Health (CESP), INSERM U1018, Radiation Epidemiology Teams, Villejuif, France.,Institute Gustave Roussy, Villejuif, France.,University Paris Saclay, Villejuif, France
| | - Michelle Ricoul
- PROCyTox, DRF, French Alternative Energies and Atomic Energy Commission (CEA), Paris-Saclay University, Fontenay-aux-Roses, France
| | - Bernadette Martins
- CEA/DRF/IJ/Neurospin/UNIACT, and UMR1141, Inserm, Paris University, Gif-sur-Yvette, France
| | - Laurence Laurier
- CEA/DRF/IJ/Neurospin/UNIACT, and UMR1141, Inserm, Paris University, Gif-sur-Yvette, France
| | - Jean-Robert Deverre
- CEA/DRF/IJ/Neurospin/UNIACT, and UMR1141, Inserm, Paris University, Gif-sur-Yvette, France
| | - Bertrand Thirion
- CEA/DRF/IJ/Neurospin/UNIACT, and UMR1141, Inserm, Paris University, Gif-sur-Yvette, France
| | - Lucie Hertz-Pannier
- CEA/DRF/IJ/Neurospin/UNIACT, and UMR1141, Inserm, Paris University, Gif-sur-Yvette, France
| | - Laure Sabatier
- PROCyTox, DRF, French Alternative Energies and Atomic Energy Commission (CEA), Paris-Saclay University, Fontenay-aux-Roses, France. .,CEA/DRF/DIREI Research Infrastructures Europe and International Fundamental Research Division, French Alternative Energies and Atomic Energy Commission (CEA), Paris-Saclay University, Gif sur Yvette Cedex, France.
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8
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Vinnikov V, Belyakov O. Clinical Applications of Biological Dosimetry in Patients Exposed to Low Dose Radiation Due to Radiological, Imaging or Nuclear Medicine Procedures. Semin Nucl Med 2021; 52:114-139. [PMID: 34879905 DOI: 10.1053/j.semnuclmed.2021.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Radiation dosimetric biomarkers have found applications beyond radiation protection area and now are actively introduced into clinical practice. Cytogenetic assays appeared to be a valuable tool for individualized quantifying radiation effects in patients, with high capability for assessing genotoxicity of various medical exposure modalities and providing meaningful radiation dose estimates for prognoses of radiation-related cancer risk. This review summarized current data on the use of biological dosimetry methods in patients undergoing various medical irradiations to low doses. The highlighted topics include basic aspects of biological dosimetry and its limitations in the range of low radiation doses, and main patterns of in vivo induction of radiation biomarkers in clinical exposure scenarios, occurring in X-ray diagnostics, computed tomography, interventional radiology, low dose radiotherapy, and nuclear medicine (internally administered 131I and other radiopharmaceuticals). Additionally, several specific issues, examined by biodosimetry techniques, are analysed, such as contrast media effect, radiation response in pediatric patients, impact of magnetic resonance imaging, evaluation of radioprotectors, detection of patients' abnormal intrinsic radiosensitivity and dose estimation in persons involved in medical radiation incidents. A prognosis of possible directions for further improvements in this area includes the automation of cytogenetic analysis, introduction of molecular biodosimeters and development of multiparametric biodosimetry platforms. A potential approach to the advanced biodosimetry of internal exposure and/or low dose external irradiation is suggested; this can be a multiparametric platform based on the combination of the γ-H2AX foci, dicentric, and translocation assays, each applied in the optimum postexposure time range, with the amalgamation of the dose estimates. The study revealed the necessity of further research, which might clarify medical radiation safety concerns for patients via using stringent biodosimetry methodology.
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Affiliation(s)
- Volodymyr Vinnikov
- International Atomic Energy Agency (IAEA), Vienna, Austria; Grigoriev Institute for Medical Radiology and Oncology (GIMRO), Kharkiv, Ukraine.
| | - Oleg Belyakov
- International Atomic Energy Agency (IAEA), Vienna, Austria
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9
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Lee Y, Kang JK, Lee YH, Yoon HJ, Yang SS, Kim SH, Jang S, Park S, Heo DH, Jang WI, Yoo HJ, Paik EK, Lee HR, Seong KM. Chromosome aberration dynamics in breast cancer patients treated with radiotherapy: Implications for radiation biodosimetry. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2021; 872:503419. [PMID: 34798939 DOI: 10.1016/j.mrgentox.2021.503419] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/17/2021] [Accepted: 10/18/2021] [Indexed: 06/13/2023]
Abstract
Although radiological accidents often result in partial-body radiation exposure, most biodosimetry studies focus on estimating whole-body exposure doses. We have evaluated time-dependent changes in chromosomal aberrations before, during, and after localized fractionated radiotherapy. Twelve patients with carcinoma in situ of the breast who underwent identical adjuvant radiation therapy (50 Gy in 25 fractions) were included in the study. Lymphocytes were collected from patients before, during, and after radiotherapy, to measure chromosome aberrations, such as dicentric chromosomes and translocations. Chromosome aberrations were then used to calculate whole- and partial-body biological absorbed doses of radiation. Dicentric chromosome frequencies in all study participants increased during radiotherapy (p < 0.05 in Kruskal-Wallis test). Increases of translocation frequencies during radiotherapy were observed in seven of the twelve patients. The increased levels of dicentric chromosomes and translocations persisted throughout our 1-year follow-up, and evidence of partial-body exposure (such as Papworth's U-value > 1.96) was observed more than 1 year after radiotherapy. We found that cytogenetic biomarkers reflected partial-body fractionated radiation exposure more than 1 year post-exposure. Our findings suggest that chromosome aberrations can be used to estimate biological absorbed radiation doses and can inform medical intervention for individuals suspected of fractionated or partial-body radiation exposure.
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Affiliation(s)
- Younghyun Lee
- Laboratory of Biological Dosimetry, National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul 01812, Republic of Korea
| | - Jin-Kyu Kang
- Dongnam Radiation Emergency Medical Center, Dongnam Institute of Radiological and Medical Sciences, Busan 46033, Republic of Korea; Department of Radiation Oncology, Dongnam Institute of Radiological and Medical Sciences, Busan 46033, Republic of Korea
| | - Yang Hee Lee
- Laboratory of Biological Dosimetry, National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul 01812, Republic of Korea
| | - Hyo Jin Yoon
- Laboratory of Biological Dosimetry, National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul 01812, Republic of Korea
| | - Su San Yang
- Laboratory of Biological Dosimetry, National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul 01812, Republic of Korea
| | - Seung Hyun Kim
- Laboratory of Biological Dosimetry, National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul 01812, Republic of Korea
| | - Seongjae Jang
- Laboratory of Biological Dosimetry, National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul 01812, Republic of Korea
| | - Sunhoo Park
- National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul 01812, Republic of Korea; Department of Pathology, Korea Institute of Radiological & Medical Sciences, Seoul 01812, Republic of Korea
| | - Da Hye Heo
- National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul 01812, Republic of Korea
| | - Won Il Jang
- National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul 01812, Republic of Korea; Department of Radiation Oncology, Korea Cancer Center Hospital, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Hyung Jun Yoo
- National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul 01812, Republic of Korea; Department of Radiation Oncology, Korea Cancer Center Hospital, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Eun Kyung Paik
- National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul 01812, Republic of Korea; Department of Radiation Oncology, Korea Cancer Center Hospital, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Hyo Rak Lee
- National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul 01812, Republic of Korea; Division of Hematology and Medical Oncology, Department of Internal Medicine, Korea Cancer Center Hospital, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea.
| | - Ki Moon Seong
- Laboratory of Biological Dosimetry, National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul 01812, Republic of Korea.
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Visweswaran S, Raavi V, Abdul Syed Basheerudeen S, Kanagaraj K, Prasad A, Selvan Gnana Sekaran T, Pattan S, Shanmugam P, Ozimuthu A, Joseph S, Perumal V. Comparative analysis of physical doses and biomarker changes in subjects underwent Computed Tomography, Positron Emission Tomography-Computed Tomography, and interventional procedures. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2021; 870-871:503404. [PMID: 34583824 DOI: 10.1016/j.mrgentox.2021.503404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/30/2021] [Accepted: 09/11/2021] [Indexed: 10/20/2022]
Abstract
Even though the medical uses of ionizing radiation are well-acknowledged globally as vital tools for the improvement of human health, they also symbolize the major man-made sources of radiation exposure to the population. Estimation of absorbed dose and biological changes after radiation-based imaging might help to better understand the effects of low dose radiation. Because of this, we measured the Entrance Surface Dose (ESD) at different anatomical locations using Lithium tetraborate doped with manganese (Li2B4O7: Mn), recorded Dose Length Product (DLP) and Dose Area Product (DAP), analyzed Chromosomal Aberration (CA), Micronucleus (MN), gamma-H2AX (γ-H2AX), and p53ser15 proteins in the blood lymphocytes of patients (n = 267) underwent Computed Tomography (CT), Positron Emission Tomography-CT (PET/CT), and interventional procedures and healthy volunteers (n = 19). The DLP and effective doses obtained from PET/CT procedures were significantly higher (p < 0.05) when compared to CT. Fluoroscopic time and DAP were significantly higher (p < 0.05) in therapeutic compared to diagnostic interventional procedures. All the anatomical locations registered a significant amount of ESD, the ESD obtained from CT and interventional procedures were significantly (p < 0.05) higher when compared to PET/CT. Fluoroscopic time did not correlate with the ESD (eye, head, thyroid, and shoulder; R2 = 0.03). CA frequency after PET/CT was significantly higher (p < 0.001) when compared to CT and interventional procedures. MN frequency was significantly higher in 24-hs (p < 0.001) post-interventional procedure compared to 2-hs. The mean ± SD of mean fluorescence intensity of γ-H2AX and p53ser15 obtained from all subjects underwent PET/CT and interventional procedures did not show a significant difference (p > 0.05) between pre- and post-procedure. However, the relative fluorescence intensity of γ-H2AX and p53ser15 was >1 in 58.5 % and 65.8 % of subjects respectively. Large inter-individual variation and lack of correlation between physical dose and biomarkers suggest the need for robust dosimetry with a large sample size to understand the health effects of low dose radiation.
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Affiliation(s)
- Shangamithra Visweswaran
- Department of Human Genetics, Sri Ramachandra Institute of Higher Education and Research (Deemed to be University), Porur, Chennai, Tamil Nadu, 600 116, India
| | - Venkateswarlu Raavi
- Department of Cell Biology and Molecular Genetics, Sri Devaraj Urs Academy of Higher Education and Research (Deemed to be University), Tamaka, Kolar, Karnataka, 563 103, India
| | - Safa Abdul Syed Basheerudeen
- Department of Human Genetics, Sri Ramachandra Institute of Higher Education and Research (Deemed to be University), Porur, Chennai, Tamil Nadu, 600 116, India
| | - Karthik Kanagaraj
- Department of Human Genetics, Sri Ramachandra Institute of Higher Education and Research (Deemed to be University), Porur, Chennai, Tamil Nadu, 600 116, India
| | - Akshaya Prasad
- Department of Human Genetics, Sri Ramachandra Institute of Higher Education and Research (Deemed to be University), Porur, Chennai, Tamil Nadu, 600 116, India
| | - Tamizh Selvan Gnana Sekaran
- Central Research Lab, K.S. Hegde Medical Academy, NITTE (Deemed to be University), Mangalore, Karnataka, 575 018, India
| | - Sudha Pattan
- Department of Radiology & Imaging Sciences, Sri Ramachandra Institute of Higher Education and Research (Deemed to be University), Porur, Chennai, Tamil Nadu, 600 116, India
| | - Panneerselvam Shanmugam
- Department of Radiology & Imaging Sciences, Sri Ramachandra Institute of Higher Education and Research (Deemed to be University), Porur, Chennai, Tamil Nadu, 600 116, India
| | - Annalakshmi Ozimuthu
- Safety, Quality & Resource Management Group, Health Safety and Environment Group, Homi Bhabha National Institute, Indira Gandhi Center for Atomic Research, Kalpakkam, Tamil Nadu, 603 102, India
| | - Santhosh Joseph
- Department of Neuro-Radiology, Sri Ramachandra Institute of Higher Education and Research (Deemed to be University), Porur, Chennai, Tamil Nadu, 600 116, India
| | - Venkatachalam Perumal
- Department of Human Genetics, Sri Ramachandra Institute of Higher Education and Research (Deemed to be University), Porur, Chennai, Tamil Nadu, 600 116, India.
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Belmans N, Oenning AC, Salmon B, Baselet B, Tabury K, Lucas S, Lambrichts I, Moreels M, Jacobs R, Baatout S. Radiobiological risks following dentomaxillofacial imaging: should we be concerned? Dentomaxillofac Radiol 2021; 50:20210153. [PMID: 33989056 PMCID: PMC8404518 DOI: 10.1259/dmfr.20210153] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 04/22/2021] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVES This review aimed to present studies that prospectively investigated biological effects in patients following diagnostic dentomaxillofacial radiology (DMFR). METHODS Literature was systematically searched to retrieve all studies assessing radiobiological effects of using X-ray imaging in the dentomaxillofacial area, with reference to radiobiological outcomes for other imaging modalities and fields. RESULTS There is a lot of variability in the reported radiobiological assessment methods and radiation dose measures, making comparisons of radiobiological studies challenging. Most radiological DMFR studies are focusing on genotoxicity and cytotoxicity, data for 2D dentomaxillofacial radiographs, albeit with some methodological weakness biasing the results. For CBCT, available evidence is limited and few studies include comparative data on both adults and children. CONCLUSIONS In the future, one will have to strive towards patient-specific measures by considering age, gender and other individual radiation sensitivity-related factors. Ultimately, future radioprotection strategies should build further on the concept of personalized medicine, with patient-specific optimization of the imaging protocol, based on radiobiological variables.
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Affiliation(s)
| | - Anne Caroline Oenning
- Division of Oral Radiology, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São, Leopoldo Mandic, Campinas, Sao Paulo, Brazil
| | | | - Bjorn Baselet
- Belgian Nuclear Research Centre (SCK CEN), Radiobiology Unit, Boeretang 200, Mol, Belgium
| | | | - Stéphane Lucas
- Laboratory of Analysis by Nuclear Reaction (LARN/PMR), Namur Research Institute for Life Sciences, University of Namur, Namur, Belgium
| | - Ivo Lambrichts
- Morphology Group, Biomedical Research Institute, Hasselt University, Agoralaan Building C, Diepenbeek, Belgium
| | - Marjan Moreels
- Belgian Nuclear Research Centre (SCK CEN), Radiobiology Unit, Boeretang 200, Mol, Belgium
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Biomarkers of Genotoxicity in Medical Workers Exposed to Low-Dose Ionizing Radiation: Systematic Review and Meta-Analyses. Int J Mol Sci 2021; 22:ijms22147504. [PMID: 34299125 PMCID: PMC8304237 DOI: 10.3390/ijms22147504] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 06/29/2021] [Accepted: 07/08/2021] [Indexed: 12/12/2022] Open
Abstract
Medical staff represent the largest group of workers occupationally exposed to ionizing radiation (IR). Chronic exposure to low-dose IR may result in DNA damage and genotoxicity associated with increased risk of cancer. This review aims to identify the genotoxicity biomarkers that are the most elevated in IR-exposed vs. unexposed health workers. A systematic review of the literature was performed to retrieve relevant studies with various biomarkers of genotoxicity. Subsequent meta-analyses produced a pooled effect size for several endpoints. The search procedure yielded 65 studies. Chromosome aberrations (CA) and micronuclei (MN) frequencies were significantly different between IR-exposed and unexposed workers (θpooled = 3.19, 95% CI 1.46–4.93; and θpooled = 1.41, 95% CI 0.97–1.86, for total aberrant cells and MN frequencies, respectively), which was not the case for ring chromosomes and nucleoplasmic bridges. Although less frequently used, stable translocations, sister chromatid exchanges (SCE) and comet assay endpoints were also statistically different between IR-exposed and unexposed workers. This review confirms the relevance of CA and MN as genotoxicity biomarkers that are consistently elevated in IR-exposed vs. unexposed workers. Other endpoints are strong candidates but require further studies to validate their usefulness. The integration of the identified biomarkers in future prospective epidemiological studies is encouraged.
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Iwatsuki K, Yoneda H, Kurimoto S, Yamamoto M, Tatebe M, Hirata H. Osteoid osteoma of the wrist misdiagnosed as de Quervain's tenosynovitis due to normal X-ray at the first visit: A case report. Int J Surg Case Rep 2020; 75:469-472. [PMID: 33076197 PMCID: PMC7527622 DOI: 10.1016/j.ijscr.2020.09.138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/19/2020] [Accepted: 09/19/2020] [Indexed: 10/29/2022] Open
Abstract
INTRODUCTION Osteoid osteomas are benign bone tumors that can occur in various bones throughout the body but are mainly found in the long bones. PRESENTATION OF THE CASE We report the case of a patient who had been treated for more than three years for a case of de Quervain's tenosynovitis due to tenderness in the first compartment of the right wrist joint. An X-ray on his first visit to a clinic was normal, but it was eventually discovered that he had an osteoid osteoma of the wrist. DISCUSSION The age of onset and gender proclivity of each disease should be considered. An X-ray should be taken in cases such as this, even to diagnose tendonitis. When any symptom, such as pain, has lingered for a long time and resisted treatment, we must reconsider the diagnosis. In patients with a low risk of tendonitis, it is essential to consider the possibility of other diseases if there is no improvement after treatment. As this patient's tumor was missed on the initial X-ray, it grew to a mature case of osteoid osteoma in three years. CONCLUSION We experienced a very educational case of osteoid osteoma of the wrist misdiagnosed as de Quervain's tenosynovitis.
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Affiliation(s)
- Katsuyuki Iwatsuki
- Department of Hand Surgery, Nagoya University Graduate School of Medicine, Japan.
| | - Hidemasa Yoneda
- Department of Hand Surgery, Nagoya University Graduate School of Medicine, Japan
| | - Shigeru Kurimoto
- Department of Hand Surgery, Nagoya University Graduate School of Medicine, Japan
| | - Michiro Yamamoto
- Department of Hand Surgery, Nagoya University Graduate School of Medicine, Japan
| | - Masahiro Tatebe
- Department of Hand Surgery, Nagoya University Graduate School of Medicine, Japan
| | - Hitoshi Hirata
- Department of Hand Surgery, Nagoya University Graduate School of Medicine, Japan
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14
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Yang P, Wang S, Liu D, Zhao H, Liu Q, Li G. Potential biological damage of human peripheral blood lymphocytes induced by computed tomography examination of the oromaxillofacial region. Oral Surg Oral Med Oral Pathol Oral Radiol 2020; 130:708-716. [PMID: 32591332 DOI: 10.1016/j.oooo.2020.05.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 05/22/2020] [Accepted: 05/26/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVES The aim of this study was to examine whether oromaxillofacial computed tomography (CT) examination causes biologic damage in lymphocytes and whether the biologic damage is related to radiation dose, patient age, or gender. STUDY DESIGN Peripheral blood was taken from 51 individuals and divided into control, in vivo, and in vitro irradiation groups. Biologic damage was assessed by comparing rates of chromosomal aberrations (CAs), including dicentric chromosomes (dics), centric rings, and acentric fragments; and nuclear aberrations, including micronuclei (MN), nuclear buds (NBUDs), and nucleoplasmic bridges (NPBs) in the peripheral blood before and after CT examination. Absorbed and effective doses were calculated with the software VirtualDose, and the blood dose was estimated accordingly. RESULTS The rates of acentric fragments, MN, NBUDs, and NPBs in the in vivo (P ≤ .008) and in vitro (P ≤ .003) irradiation groups were significantly higher than those in the control groups. The acentric fragment rate (P = .013) and MN rate (P = .002) were higher in the in vitro group than in the in vivo group. There was no correlation between change rates of CAs and nuclear aberrations with radiation dose. Positive correlations of MN rates with age were found in all groups (ρ ≥ 0.590). CONCLUSIONS Certain doses of radiation in oromaxillofacial CT examination may induce CAs and nuclear aberrations in lymphocytes.
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Affiliation(s)
- Pan Yang
- Department of Oral and Maxillofacial Radiology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Shuo Wang
- Department of Oral and Maxillofacial Radiology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Denggao Liu
- Department of Oral and Maxillofacial Radiology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Hua Zhao
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Qingjie Liu
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Gang Li
- Department of Oral and Maxillofacial Radiology, Peking University School and Hospital of Stomatology, Beijing, China.
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Sakane H, Ishida M, Shi L, Fukumoto W, Sakai C, Miyata Y, Ishida T, Akita T, Okada M, Awai K, Tashiro S. Biological Effects of Low-Dose Chest CT on Chromosomal DNA. Radiology 2020; 295:439-445. [PMID: 32154776 DOI: 10.1148/radiol.2020190389] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Background Although the National Lung Screening Trial reported a significant reduction in lung cancer mortality when low-dose (LD) CT chest examinations are used for a diagnosis, their biologic effects from radiation exposure remain unclear. Purpose To compare LD CT and standard-dose (SD) CT for DNA double-strand breaks and chromosome aberrations (CAs) in peripheral blood lymphocytes. Materials and Methods Between March 2016 and June 2018, 209 participants who were referred to a respiratory surgery department for chest CT studies were prospectively enrolled in this study. Individuals were excluded if they had undergone radiography examinations within the last 3 days or had undergone chemotherapy or radiation therapy. Peripheral blood samples were obtained before and 15 minutes after CT. The number of γ-H2AX foci and unstable CAs in lymphocytes was quantified by immunofluorescent staining of γ-H2AX and by fluorescence in situ hybridization by using peptide nucleic acid probes for centromeres and telomeres, respectively. The Wilcoxon signed rank test was used for statistical analysis. Bonferroni correction was applied for multiple comparisons. Results Of the 209 participants (105 women, 104 men; mean age, 67.0 years ± 11.3 [standard deviation]), 107 underwent chest LD CT and 102 underwent chest SD CT. Sex distribution, age, and body size metrics were similar between the two groups. The median effective dose of LD CT and SD CT was 1.5 and 5.0 mSv, respectively. The number of double-strand breaks and CAs increased after a SD CT examination (γ-H2AX, P < .001; CAs, P = .003); the number of double-strand breaks and CAs before and after LD CT was not different (γ-H2AX, P = .45; CAs, P = .69). Conclusion No effect of low-dose CT on human DNA was detected. In the same setting, DNA double-strand breaks and chromosome aberrations increased after standard-dose CT. © RSNA, 2020 Online supplemental material is available for this article. See also the editorial by Brenner in this issue.
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Affiliation(s)
- Hiroaki Sakane
- From the Department of Diagnostic Radiology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan (H.S., W.F., K.A.); Department of Cardiovascular Physiology and Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (M.I., C.S.); Departments of Cellular Biology (L.S., S.T.) and Surgical Oncology (Y.M., M.O.), Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima 734-8553, Japan; Department of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (T.A.); and Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan (T.I.)
| | - Mari Ishida
- From the Department of Diagnostic Radiology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan (H.S., W.F., K.A.); Department of Cardiovascular Physiology and Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (M.I., C.S.); Departments of Cellular Biology (L.S., S.T.) and Surgical Oncology (Y.M., M.O.), Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima 734-8553, Japan; Department of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (T.A.); and Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan (T.I.)
| | - Lin Shi
- From the Department of Diagnostic Radiology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan (H.S., W.F., K.A.); Department of Cardiovascular Physiology and Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (M.I., C.S.); Departments of Cellular Biology (L.S., S.T.) and Surgical Oncology (Y.M., M.O.), Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima 734-8553, Japan; Department of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (T.A.); and Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan (T.I.)
| | - Wataru Fukumoto
- From the Department of Diagnostic Radiology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan (H.S., W.F., K.A.); Department of Cardiovascular Physiology and Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (M.I., C.S.); Departments of Cellular Biology (L.S., S.T.) and Surgical Oncology (Y.M., M.O.), Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima 734-8553, Japan; Department of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (T.A.); and Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan (T.I.)
| | - Chiemi Sakai
- From the Department of Diagnostic Radiology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan (H.S., W.F., K.A.); Department of Cardiovascular Physiology and Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (M.I., C.S.); Departments of Cellular Biology (L.S., S.T.) and Surgical Oncology (Y.M., M.O.), Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima 734-8553, Japan; Department of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (T.A.); and Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan (T.I.)
| | - Yoshihiro Miyata
- From the Department of Diagnostic Radiology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan (H.S., W.F., K.A.); Department of Cardiovascular Physiology and Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (M.I., C.S.); Departments of Cellular Biology (L.S., S.T.) and Surgical Oncology (Y.M., M.O.), Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima 734-8553, Japan; Department of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (T.A.); and Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan (T.I.)
| | - Takafumi Ishida
- From the Department of Diagnostic Radiology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan (H.S., W.F., K.A.); Department of Cardiovascular Physiology and Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (M.I., C.S.); Departments of Cellular Biology (L.S., S.T.) and Surgical Oncology (Y.M., M.O.), Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima 734-8553, Japan; Department of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (T.A.); and Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan (T.I.)
| | - Tomoyuki Akita
- From the Department of Diagnostic Radiology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan (H.S., W.F., K.A.); Department of Cardiovascular Physiology and Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (M.I., C.S.); Departments of Cellular Biology (L.S., S.T.) and Surgical Oncology (Y.M., M.O.), Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima 734-8553, Japan; Department of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (T.A.); and Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan (T.I.)
| | - Morihito Okada
- From the Department of Diagnostic Radiology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan (H.S., W.F., K.A.); Department of Cardiovascular Physiology and Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (M.I., C.S.); Departments of Cellular Biology (L.S., S.T.) and Surgical Oncology (Y.M., M.O.), Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima 734-8553, Japan; Department of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (T.A.); and Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan (T.I.)
| | - Kazuo Awai
- From the Department of Diagnostic Radiology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan (H.S., W.F., K.A.); Department of Cardiovascular Physiology and Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (M.I., C.S.); Departments of Cellular Biology (L.S., S.T.) and Surgical Oncology (Y.M., M.O.), Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima 734-8553, Japan; Department of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (T.A.); and Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan (T.I.)
| | - Satoshi Tashiro
- From the Department of Diagnostic Radiology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan (H.S., W.F., K.A.); Department of Cardiovascular Physiology and Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (M.I., C.S.); Departments of Cellular Biology (L.S., S.T.) and Surgical Oncology (Y.M., M.O.), Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima 734-8553, Japan; Department of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (T.A.); and Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan (T.I.)
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Lee Y, Seo S, Jin YW, Jang S. Assessment of working environment and personal dosimeter-wearing compliance of industrial radiographers based on chromosome aberration frequencies. JOURNAL OF RADIOLOGICAL PROTECTION : OFFICIAL JOURNAL OF THE SOCIETY FOR RADIOLOGICAL PROTECTION 2020; 40:151-164. [PMID: 31539897 DOI: 10.1088/1361-6498/ab4686] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Industrial radiographers are exposed to relatively higher doses of radiation than other radiation-exposed workers in South Korea. The objective of our study was to investigate the impact of specific occupational conditions on chromosome aberration frequency and evaluate dosimeter-wearing compliance of industrial radiographers in Korea. We studied individual and occupational characteristics of 120 industrial radiographers working in South Korea and evaluated the frequency of dicentrics and translocations in chromosomes to estimate radiation exposure. The association between working conditions and chromosome aberration frequencies was assessed by Poisson regression analysis after adjusting for confounding factors. Legal personal dosimeter-wearing compliance among workers was investigated by correlation analysis between recorded dose and chromosome aberration frequency. Daily average number of radiographic films used in the last six months was associated with dicentrics frequency. Workers performing site radiography showed significantly higher translocation frequency than those working predominantly in shielded enclosures. The correlation between chromosome aberration frequency and recorded dose was higher in workers in the radiography occupation since 2012 (new workers) than other veteran workers. Our study found that site radiography could affect actual radiation exposure to workers. Controlling these working conditions and making an effort to improve personal dosimeter-wearing compliance among veteran workers as well as new workers may be necessary to reduce radiation exposure as much as possible in their workplace.
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Affiliation(s)
- Younghyun Lee
- Laboratory of Biological Dosimetry, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul, Republic of Korea
| | - Songwon Seo
- Laboratory of Low Dose Risk Assessment, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul, Republic of Korea
| | - Young Woo Jin
- National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul, Republic of Korea
| | - Seongjae Jang
- Laboratory of Biological Dosimetry, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul, Republic of Korea
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Abe Y, Noji H, Miura T, Sugai M, Kurosu Y, Ujiie R, Tsuyama N, Yanagi A, Yanai Y, Ohba T, Ishikawa T, Kamiya K, Yoshida MA, Sakai A. Investigation of the cumulative number of chromosome aberrations induced by three consecutive CT examinations in eight patients. JOURNAL OF RADIATION RESEARCH 2019; 60:729-739. [PMID: 31665444 PMCID: PMC7357232 DOI: 10.1093/jrr/rrz068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 08/16/2019] [Indexed: 06/10/2023]
Abstract
In our previous study, we found that chromosomes were damaged by the radiation exposure from a single computed tomography (CT) examination, based on an increased number of dicentric chromosomes (Dics) formed in peripheral blood lymphocytes after a CT examination. We then investigated whether a cumulative increase in the frequency of Dics and chromosome translocations (Trs) formation could be observed during three consecutive CT examinations performed over the course of 3-4 years, using lymphocytes in peripheral bloods of eight patients (five males and three females; age range 27-77 years; mean age, 64 years). The effective radiation dose per CT examination estimated from the computational dosimetry system was 22.0-73.5 mSv, and the average dose per case was 40.5 mSv. The frequency of Dics formation significantly increased after a CT examination and tended to decrease before the next examination. Unlike Dics analysis, we found no significant increase in the frequency of Trs formation before and after the CT examination, and we observed no tendency for the frequency to decrease before the next CT examination. The frequency of Trs formation was higher than that of Dics formation regardless of CT examination. Furthermore, neither analysis of Dics nor Trs showed a cumulative increase in the frequency of formation following three consecutive CT examinations.
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Affiliation(s)
- Yu Abe
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Hideyoshi Noji
- Department of Medical Oncology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Tomisato Miura
- Department of Bioscience and Laboratory Medicine, Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - Misaki Sugai
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Yumiko Kurosu
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
| | - Risa Ujiie
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
| | - Naohiro Tsuyama
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Aki Yanagi
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Yukari Yanai
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Takashi Ohba
- Department of Radiation Health Management, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Tetsuo Ishikawa
- Department of Radiation Physics and Chemistry, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Kenji Kamiya
- Department of Experimental Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Mitsuaki A Yoshida
- Department of Radiation Biology, Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
| | - Akia Sakai
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan
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Goh VST, Fujishima Y, Abe Y, Sakai A, Yoshida MA, Ariyoshi K, Kasai K, Wilkins RC, Blakely WF, Miura T. Construction of fluorescence in situ hybridization (FISH) translocation dose-response calibration curve with multiple donor data sets using R, based on ISO 20046:2019 recommendations. Int J Radiat Biol 2019; 95:1668-1684. [DOI: 10.1080/09553002.2019.1664788] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Valerie Swee Ting Goh
- Department of Bioscience and Laboratory Medicine, Graduate School of Health Sciences, Hirosaki University, Hirosaki, Japan
| | - Yohei Fujishima
- Department of Bioscience and Laboratory Medicine, Graduate School of Health Sciences, Hirosaki University, Hirosaki, Japan
- Department of Radiation Biology, Tohoku University School of Medicine, Sendai, Japan
| | - Yu Abe
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Akira Sakai
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Mitsuaki A. Yoshida
- Department of Radiation Biology, Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
| | - Kentaro Ariyoshi
- Department of Radiation Biology, Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
| | - Kosuke Kasai
- Department of Bioscience and Laboratory Medicine, Graduate School of Health Sciences, Hirosaki University, Hirosaki, Japan
| | - Ruth C. Wilkins
- Consumer and Clinical Radiation Protection Bureau, Healthy Environments and Consumer Safety Branch, Ottawa, ON, Canada
| | - William F. Blakely
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Tomisato Miura
- Department of Bioscience and Laboratory Medicine, Graduate School of Health Sciences, Hirosaki University, Hirosaki, Japan
- Department of Radiation Biology, Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
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19
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Developmental and hemocytological effects of ingesting Fukushima's radiocesium on the cabbage white butterfly Pieris rapae. Sci Rep 2019; 9:2625. [PMID: 30796244 PMCID: PMC6385249 DOI: 10.1038/s41598-018-37325-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 12/04/2018] [Indexed: 12/22/2022] Open
Abstract
High morphological abnormality and mortality rates have been reported in the pale grass blue butterfly, Zizeeria maha, since the Fukushima nuclear accident. However, it remains uncertain if these effects are restricted to this butterfly. Here, we evaluated the effects of ingesting cabbage leaves grown with contaminated soils from Fukushima on the development and hemocytes of the cabbage white butterfly, Pieris rapae. Contaminated cabbage leaves containing various low levels of anthropogenic 134Cs and 137Cs radioactivity (less than natural 40K radioactivity) were fed to larvae from Okinawa, the least contaminated locality in Japan. Negative developmental and morphological effects were detected in the experimental groups. The cesium (but not potassium) radioactivity concentration was negatively correlated with the granulocyte percentage in hemolymph, and the granulocyte percentage was positively correlated with the pupal eclosion rate, the adult achievement rate, and the total normality rate. These results demonstrated that ingesting low-level radiocesium contaminants in Fukushima (but not natural radiopotassium) imposed biologically negative effects on the cabbage white butterfly, as in the pale grass blue butterfly, at both cellular and organismal levels.
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Oestreicher U, Endesfelder D, Gomolka M, Kesminiene A, Lang P, Lindholm C, Rößler U, Samaga D, Kulka U. Automated scoring of dicentric chromosomes differentiates increased radiation sensitivity of young children after low dose CT exposure in vitro. Int J Radiat Biol 2018; 94:1017-1026. [PMID: 30028637 DOI: 10.1080/09553002.2018.1503429] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 05/28/2018] [Accepted: 06/29/2018] [Indexed: 12/12/2022]
Abstract
PURPOSE Automated detection of dicentric chromosomes from a large number of cells was applied to study age-dependent radiosensitivity after in vitro CT exposure of blood from healthy donors. MATERIALS AND METHODS Blood samples from newborns, children (2-5 years) and adults (20-50 years) were exposed in vitro to 0 mGy, 41 mGy and 978 mGy using a CT equipment. In this study, automated scoring based on 13,000-31,000 cells/dose point/age group was performed. Results for control and low dose points were validated by manually counting about 26,000 cells/dose point/age group. RESULTS For all age groups, the high number of analyzed cells enabled the detection of a significant increase in the frequency of radiation induced dicentric chromosomes in cells exposed to 41 mGy as compared to control cells. Moreover, differences between the age groups could be resolved for the low dose: young donors showed significantly increased risk for induced dicentrics at 41 mGy compared to adults. CONCLUSIONS The results very clearly demonstrate that the automated dicentric scoring method is capable of discerning radiation induced biomarkers in the low dose range (<100 mGy) and thus may open possibilities for large-scale molecular epidemiology studies in radiation protection.
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Affiliation(s)
- Ursula Oestreicher
- a Federal Office for Radiation Protection (BfS) , Oberschleissheim , Germany
| | - David Endesfelder
- a Federal Office for Radiation Protection (BfS) , Oberschleissheim , Germany
| | - Maria Gomolka
- a Federal Office for Radiation Protection (BfS) , Oberschleissheim , Germany
| | | | - Peter Lang
- c Department of Radiation Oncology , University Hospital, LMU , Munich , Germany
| | - Carita Lindholm
- d Radiation and Nuclear Safety Authority, STUK , Helsinki , Finland
| | - Ute Rößler
- a Federal Office for Radiation Protection (BfS) , Oberschleissheim , Germany
| | - Daniel Samaga
- a Federal Office for Radiation Protection (BfS) , Oberschleissheim , Germany
- e Research Unit Radiation Cytogenetics , Helmholtz Zentrum Muenchen , Oberschleissheim , Germany
| | - Ulrike Kulka
- a Federal Office for Radiation Protection (BfS) , Oberschleissheim , Germany
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Fujishima Y, Kanahama S, Hagino S, Natsubori S, Saito H, Azumaya A, Ariyoshi K, Nakata A, Kasai K, Yamada K, Mariya Y, Yoshida MA, Miura T. Influence of anticoagulants and storage temperatures on blood counts and mitotic index of blood samples collected for cytogenetic biodosimetry. Int J Radiat Biol 2018; 95:186-192. [PMID: 30373443 DOI: 10.1080/09553002.2019.1539882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
PURPOSE In order to establish suitable protocols of blood culture to obtain sufficient numbers of metaphases for dicentric chromosome assay (DCA), we have examined the effect of storage temperature, storage time, and anticoagulant type. MATERIALS AND METHODS Peripheral blood was collected from five healthy donors with lithium heparin and ethylenediaminetetraacetic acid dipotassium salt (EDTA-2K). These samples were irradiated with X-rays at 3 Gy or sham; the samples were further divided into groups that were either stored at room temperature (RT) or 5.2 ± 1.0 °C. After 6, 24, 48, 72, and 168 h of storage, both blood counts and the mitotic index (MI) were analyzed. RESULTS Heparinized blood samples stored under cold conditions exhibited low white blood cell, lymphocyte, and platelet counts. EDTA-treated blood samples did not show such obvious changes in cell counts. After 6 h of storage, heparinized blood samples stored at RT had MI of 21.5-29.3%. Similar MI was obtained in the EDTA-washed group stored for 6, 24, 48, and 72 h. CONCLUSIONS Our study confirms that heparinized blood samples should be stored at RT to get sufficient metaphases for DCA, and that EDTA blood samples also can be used for blood culture after washing and storage under 5.2 ± 1.0 °C.
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Affiliation(s)
- Yohei Fujishima
- a Department of Bioscience and Laboratory Medicine , Graduate School of Health Sciences, Hirosaki University , Hirosaki , Japan
| | - Syuki Kanahama
- b Department of Laboratory Medicine , Mutsu General Hospital , Mutsu , Japan
| | - Shigeki Hagino
- b Department of Laboratory Medicine , Mutsu General Hospital , Mutsu , Japan
| | - Shiori Natsubori
- b Department of Laboratory Medicine , Mutsu General Hospital , Mutsu , Japan
| | - Hitoshi Saito
- b Department of Laboratory Medicine , Mutsu General Hospital , Mutsu , Japan
| | - Ayaka Azumaya
- a Department of Bioscience and Laboratory Medicine , Graduate School of Health Sciences, Hirosaki University , Hirosaki , Japan
| | - Kentaro Ariyoshi
- c Department of Radiation Biology , Institute of Radiation Emergency Medicine, Hirosaki University , Hirosaki , Japan
| | - Akifumi Nakata
- d Department of Pharmacy, Faculty of Pharmaceutical Science , Hokkaido University of Science , Sapporo , Japan
| | - Kosuke Kasai
- a Department of Bioscience and Laboratory Medicine , Graduate School of Health Sciences, Hirosaki University , Hirosaki , Japan
| | - Kyogo Yamada
- e Department of Surgery , Mutsu General Hospital , Mutsu , Japan
| | - Yasushi Mariya
- f Department of Radiology/Radiation Oncology , Mutsu General Hospital , Mutsu , Japan
| | - Mitsuaki A Yoshida
- c Department of Radiation Biology , Institute of Radiation Emergency Medicine, Hirosaki University , Hirosaki , Japan
| | - Tomisato Miura
- a Department of Bioscience and Laboratory Medicine , Graduate School of Health Sciences, Hirosaki University , Hirosaki , Japan.,c Department of Radiation Biology , Institute of Radiation Emergency Medicine, Hirosaki University , Hirosaki , Japan
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22
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Maqsudur Rashid A, Ramalingam L, Al-Jawadi A, Moustaid-Moussa N, Moussa H. Low dose radiation, inflammation, cancer and chemoprevention. Int J Radiat Biol 2018; 95:506-515. [DOI: 10.1080/09553002.2018.1484194] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Al Maqsudur Rashid
- Department of Mechanical Engineering, Texas Tech University, Lubbock, TX, USA
| | - Latha Ramalingam
- Department of Nutritional Sciences, Texas Tech University, Lubbock, TX, USA
- Obesity Research Cluster, Texas Tech University, Lubbock, TX, USA
| | - Arwa Al-Jawadi
- Department of Nutritional Sciences, Texas Tech University, Lubbock, TX, USA
- Obesity Research Cluster, Texas Tech University, Lubbock, TX, USA
| | - Naima Moustaid-Moussa
- Department of Nutritional Sciences, Texas Tech University, Lubbock, TX, USA
- Obesity Research Cluster, Texas Tech University, Lubbock, TX, USA
| | - Hanna Moussa
- Department of Mechanical Engineering, Texas Tech University, Lubbock, TX, USA
- Obesity Research Cluster, Texas Tech University, Lubbock, TX, USA
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23
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Shi L, Tashiro S. Estimation of the effects of medical diagnostic radiation exposure based on DNA damage. JOURNAL OF RADIATION RESEARCH 2018; 59:ii121-ii129. [PMID: 29518207 PMCID: PMC5941141 DOI: 10.1093/jrr/rry006] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 01/12/2018] [Indexed: 05/29/2023]
Abstract
X-rays are widely applied in the medical field for the diagnosis and treatment of diseases. Among the uses of X-rays in diagnosis, computed tomography (CT) has been established as one of the most informative diagnostic radiology examinations. Moreover, recent advances in CT scan technology have made this examination much easier and more informative and increased its application, especially in Japan. However, the radiation dose of CT scans is higher than that of simple X-ray examinations. Therefore, the health risk of a CT scan has been discussed in various studies, but is still controversial. Consequently, the biological and cytogenetic effects of CT scans are being analyzed. Here, we summarize the recent findings concerning the biological and cytogenetic effects of ionizing radiation from a CT scan, by focusing on DNA damage and chromosome aberrations.
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Affiliation(s)
- Lin Shi
- Department of Cellular Biology, Research Institute for Radiation Biology Medicine, Hiroshima University, Kasumi 1-2-3, Minamiku, Hiroshima 734-8553, Japan
| | - Satoshi Tashiro
- Department of Cellular Biology, Research Institute for Radiation Biology Medicine, Hiroshima University, Kasumi 1-2-3, Minamiku, Hiroshima 734-8553, Japan
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24
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Non-invasive imaging modalities to study neurodegenerative diseases of aging brain. J Chem Neuroanat 2018; 95:54-69. [PMID: 29474853 DOI: 10.1016/j.jchemneu.2018.02.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 02/16/2018] [Accepted: 02/16/2018] [Indexed: 12/13/2022]
Abstract
The aim of this article is to highlight current approaches for imaging elderly brain, indispensable for cognitive neuroscience research with emphasis on the basic physical principles of various non-invasive neuroimaging techniques. The first part of this article presents a quick overview of the primary non-invasive neuroimaging modalities used by cognitive neuroscientists such as transcranial magnetic stimulation (TMS), transcranial electrical stimulation (tES), electroencephalography (EEG), magnetoencephalography (MEG), single photon emission computed tomography (SPECT), positron emission tomography (PET), magnetic resonance spectroscopic imaging (MRSI), Profusion imaging, functional magnetic resonance imaging (fMRI), near infrared spectroscopy (NIRS) and diffusion tensor imaging (DTI) along with tractography and connectomics. The second part provides a comprehensive overview of different multimodality imaging techniques for various cognitive neuroscience studies of aging brain.
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25
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C V K, E N R, V AK, P R VK, P K M K, G J, Das B. Frequency of chromosome aberrations among adult male individuals from high and normal level natural radiation areas of Kerala in the southwest coast of India. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2018; 828:23-29. [PMID: 29555061 DOI: 10.1016/j.mrgentox.2018.02.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 01/15/2018] [Accepted: 02/07/2018] [Indexed: 12/20/2022]
Abstract
Chromosome aberration analysis was carried out in peripheral blood lymphocytes of adult male individuals from normal level natural radiation areas (NLNRA, ≤1.5 mGy/year, N = 27) and high level natural radiation areas (HLNRA, >1.5mGy/year, N = 70) of Kerala coast in southwest India. The mean age of individuals from NLNRA and HLNRA was 40.9 ± 9.4 and 43.7 ± 12.4 years, respectively, with an overall mean of 42.9 ± 11.6 (range: 18-80). Whole-blood cultures were set up and about 260 metaphases were scored per individual. The frequency of chromosome aberrations was calculated per 1000 cells. The overall basal frequency of unstable (dicentrics and rings), stable (translocations and inversions) and other (fragments and breaks) aberrations was 1.54 ± 0.25, 4.1 ± 0.40 and 6.66 ± 0.51, respectively. Individuals of NLNRA and HLNRA had statistically similar frequency of unstable (2.11 ± 0.64 v/s 1.39 ± 0.26; RR = 0.66; 95% CI: 0.33-1.33), stable (4.60 ± 0.94 v/s 3.97 ± 0.44; RR = 0.86; 95% CI: 0.55-1.36) and other (7.85 ± 1.23 v/s 6.36 ± 0.56; RR = 0.81; 95% CI: 0.57-1.15) chromosome aberrations. Frequencies of unstable, stable and other chromosome aberrations did not show any dose response after stratification of HLNRA samples into three dose groups (1.51-5.0 mGy/year, 5.01-10 mGy/year and >10.0 mGy/year). Smokers showed an increase in other chromosome aberrations (P < 0.001), but smoking was not associated with unstable and stable aberrations. Alcohol consumption and tobacco chewing had no significant association with any type of chromosome aberrations. In conclusion, chronic low dose radiation prevailing in Kerala coast did not show any significant effect on the basal frequency of chromosome aberrations among the adult population.
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Affiliation(s)
- Karuppasamy C V
- Low Level Radiation Research Laboratory, Low Level Radiation Research Section (LLRRS), Radiation Biology & Health Sciences Division (RB&HSD), Bio-Science Group (BSG), Bhabha Atomic Research Centre (BARC), Kollam 691 001, Kerala, India.
| | - Ramachandran E N
- Low Level Radiation Research Laboratory, Low Level Radiation Research Section (LLRRS), Radiation Biology & Health Sciences Division (RB&HSD), Bio-Science Group (BSG), Bhabha Atomic Research Centre (BARC), Kollam 691 001, Kerala, India
| | - Anil Kumar V
- Low Level Radiation Research Laboratory, Low Level Radiation Research Section (LLRRS), Radiation Biology & Health Sciences Division (RB&HSD), Bio-Science Group (BSG), Bhabha Atomic Research Centre (BARC), Kollam 691 001, Kerala, India
| | - Vivek Kumar P R
- Low Level Radiation Research Laboratory, Low Level Radiation Research Section (LLRRS), Radiation Biology & Health Sciences Division (RB&HSD), Bio-Science Group (BSG), Bhabha Atomic Research Centre (BARC), Kollam 691 001, Kerala, India
| | - Koya P K M
- Low Level Radiation Research Laboratory, Low Level Radiation Research Section (LLRRS), Radiation Biology & Health Sciences Division (RB&HSD), Bio-Science Group (BSG), Bhabha Atomic Research Centre (BARC), Kollam 691 001, Kerala, India
| | - Jaikrishan G
- Low Level Radiation Research Laboratory, Low Level Radiation Research Section (LLRRS), Radiation Biology & Health Sciences Division (RB&HSD), Bio-Science Group (BSG), Bhabha Atomic Research Centre (BARC), Kollam 691 001, Kerala, India
| | - Birajalaxmi Das
- Low Level Radiation Research Laboratory, Low Level Radiation Research Section (LLRRS), Radiation Biology & Health Sciences Division (RB&HSD), Bio-Science Group (BSG), Bhabha Atomic Research Centre (BARC), Kollam 691 001, Kerala, India; LLRRS, RB & HSD, BSG, BARC, Trombay, Mumbai 400 085, India.
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26
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Abe Y, Yoshida MA, Fujioka K, Kurosu Y, Ujiie R, Yanagi A, Tsuyama N, Miura T, Inaba T, Kamiya K, Sakai A. Dose-response curves for analyzing of dicentric chromosomes and chromosome translocations following doses of 1000 mGy or less, based on irradiated peripheral blood samples from five healthy individuals. JOURNAL OF RADIATION RESEARCH 2018; 59:35-42. [PMID: 29040682 PMCID: PMC5786284 DOI: 10.1093/jrr/rrx052] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Indexed: 05/03/2023]
Abstract
In terms of biological dosimetry at the time of radiation exposure, the dicentric chromosome (Dic) assay (DCA) is the gold standard for assessing for the acute phase and chromosome translocation (Tr) analysis is the gold standard for assessing the chronic phase. It is desirable to have individual dose-response curves (DRCs) for each laboratory because the analysis criteria differ between laboratories. We constructed the DRCs for radiation dose estimation (with three methods) using peripheral blood (PB) samples from five healthy individuals. Aliquots were irradiated with one of eight gamma-ray doses (0, 10, 20, 50, 100, 200, 500 or 1000 mGy), then cultured for 48 h. The number of chromosome aberrations (CAs) was analyzed by DCA, using Giemsa staining and centromere-fluorescence in situ hybridization (centromere-FISH) and by chromosome painting (chromosome pairs 1, 2 and 4) for Tr analysis. In DCA, there was large variation between individuals in the frequency of Dics formed, and the slopes of the DRCs were different. In Tr analysis, although variation was observed in the frequency of Tr, the slopes of the DRCs were similar after adjusting the background for age. Good correlation between the irradiation dose and the frequency of CAs formed was observed with these three DRCs. However, performing three different biological dosimetry assays simultaneously on PB from five donors nonetheless results in variation in the frequency of CAs formed, especially at doses of 50 mGy or less, highlighting the difficulty of biological dosimetry using these methods. We conclude that it might be difficult to construct universal DRCs.
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Affiliation(s)
- Yu Abe
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960–1295, Japan
| | - Mitsuaki A Yoshida
- Department of Radiation Biology, Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, 036-8564, Japan
| | - Kurumi Fujioka
- Department of Molecular Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, 734-8553, Japan
| | - Yumiko Kurosu
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960–1295, Japan
| | - Risa Ujiie
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960–1295, Japan
| | - Aki Yanagi
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960–1295, Japan
| | - Naohiro Tsuyama
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960–1295, Japan
| | - Tomisato Miura
- Department of Pathologic Analysis, Hirosaki University Graduate School of Health Sciences, Hirosaki, 036-8564, Japan
| | - Toshiya Inaba
- Department of Molecular Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, 734-8553, Japan
| | - Kenji Kamiya
- Department of Experimental Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Akira Sakai
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960–1295, Japan
- Corresponding author. Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960–1295, Japan. Tel: +81-24-547-1420; Fax: +81-24-547-1940;
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27
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Khvostunov IK, Saenko VA, Krylov V, Rodichev A, Yamashita S. Cytogenetic biodosimetry and dose-rate effect after radioiodine therapy for thyroid cancer. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2017; 56:213-226. [PMID: 28526978 DOI: 10.1007/s00411-017-0696-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 05/11/2017] [Indexed: 06/07/2023]
Abstract
This study set out to investigate chromosomal damage in peripheral blood lymphocytes of thyroid cancer patients receiving 131I for thyroid remnant ablation or treatment of metastatic disease. The observed chromosomal damage was further converted to the estimates of whole-body dose to project the adverse side effects. Chromosomal aberration analysis was performed in 24 patients treated for the first time or after multiple courses. Blood samples were collected before treatment and 3 or 4 days after administration of 2-4 GBq of 131I. Both conventional cytogenetic and chromosome 2, 4 and 12 painting assays were used. To account for dose-rate effect, a dose-protraction factor was applied to calculate the whole-body dose. The mean dose was 0.62 Gy (95% CI: 0.44-0.77 Gy) in the subgroup of patients treated one time and 0.67 Gy (95% CI: 0.03-1.00 Gy) in re-treated patients. These dose estimates are about 1.7-fold higher than those disregarding the effect of exposure duration. In re-treated patients, the neglected dose-rate effect can result in underestimation of the cumulative whole-body dose by the factor ranging from 2.6 to 6.8. Elevated frequency of chromosomal aberrations observed in re-treated patients before radioiodine therapy allows estimation of a cumulative dose received from all previous treatments.
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Affiliation(s)
- Igor K Khvostunov
- A.F. Tsyb Medical Radiological Research Center, Branch of the National Medical Research Radiological Centre, Russian Ministry of Health Care, Koroliova str. 4, Obninsk, Kaluga Region, Russia, 249036.
- Department of Radiation Molecular Epidemiology, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, Japan.
| | - Vladimir A Saenko
- Department of Radiation Molecular Epidemiology, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, Japan
| | - Valeri Krylov
- A.F. Tsyb Medical Radiological Research Center, Branch of the National Medical Research Radiological Centre, Russian Ministry of Health Care, Koroliova str. 4, Obninsk, Kaluga Region, Russia, 249036
| | - Andrei Rodichev
- A.F. Tsyb Medical Radiological Research Center, Branch of the National Medical Research Radiological Centre, Russian Ministry of Health Care, Koroliova str. 4, Obninsk, Kaluga Region, Russia, 249036
| | - Shunichi Yamashita
- Department of Radiation Molecular Epidemiology, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, Japan
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Khattab M, Walker DM, Albertini RJ, Nicklas JA, Lundblad LK, Vacek PM, Walker VE. Frequencies of micronucleated reticulocytes, a dosimeter of DNA double-strand breaks, in infants receiving computed tomography or cardiac catheterization. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2017; 820:8-18. [DOI: 10.1016/j.mrgentox.2017.05.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 05/10/2017] [Accepted: 05/12/2017] [Indexed: 12/18/2022]
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29
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Abe Y, Miura T, Yoshida MA, Ujiie R, Kurosu Y, Kato N, Katafuchi A, Tsuyama N, Kawamura F, Ohba T, Inamasu T, Shishido F, Noji H, Ogawa K, Yokouchi H, Kanazawa K, Ishida T, Muto S, Ohsugi J, Suzuki H, Ishikawa T, Kamiya K, Sakai A. Analysis of chromosome translocation frequency after a single CT scan in adults. JOURNAL OF RADIATION RESEARCH 2016; 57:220-6. [PMID: 26874116 PMCID: PMC4915535 DOI: 10.1093/jrr/rrv090] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 11/03/2015] [Indexed: 05/04/2023]
Abstract
We recently reported an increase in dicentric chromosome (DIC) formation after a single computed tomography (CT) scan (5.78-60.27 mSv: mean 24.24 mSv) and we recommended analysis of 2000 metaphase cells stained with Giemsa and centromere-FISH for dicentric chromosome assay (DCA) in cases of low-dose radiation exposure. In the present study, we analyzed the frequency of chromosome translocations using stored Carnoy's-fixed lymphocyte specimens from the previous study; these specimens were from 12 patients who were subject to chromosome painting of Chromosomes 1, 2 and 4. Chromosomes 1, 2 and 4 were analyzed in ∼5000 cells, which is equivalent to the whole-genome analysis of almost 2000 cells. The frequency of chromosome translocation was higher than the number of DICs formed, both before and after CT scanning. The frequency of chromosome translocations tended to be higher, but not significantly higher, in patients with a treatment history compared with patients without such a history. However, in contrast to the results for DIC formation, the frequency of translocations detected before and after the CT scan did not differ significantly. Therefore, analysis of chromosome translocation may not be a suitable assay for detecting chromosome aberrations in cases of low-dose radiation exposure from a CT scan. A significant increase in the frequency of chromosome translocations was not likely to be detected due to the high baseline before the CT scan; the high and variable frequency of translocations was probably due to multiple confounding factors in adults.
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Affiliation(s)
- Yu Abe
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Tomisato Miura
- Department of Pathologic Analysis, Hirosaki University Graduate School of Health Sciences, Hirosaki, 036-8564, Japan
| | - Mitsuaki A Yoshida
- Department of Radiation Biology, Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, 036-8564, Japan
| | - Risa Ujiie
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Yumiko Kurosu
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Nagisa Kato
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Atsushi Katafuchi
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Naohiro Tsuyama
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Fumihiko Kawamura
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Takashi Ohba
- Department of Radiation Health Management, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Tomoko Inamasu
- Department of Radiation Health Management, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Fumio Shishido
- Department of Radiology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Hideyoshi Noji
- Department of Cardiology and Hematology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Kazuei Ogawa
- Department of Cardiology and Hematology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Hiroshi Yokouchi
- Department of Pulmonary Medicine, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Kenya Kanazawa
- Department of Pulmonary Medicine, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Takashi Ishida
- Department of Pulmonary Medicine, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Satoshi Muto
- Department of Regenerative Surgery, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Jun Ohsugi
- Department of Regenerative Surgery, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Hiroyuki Suzuki
- Department of Regenerative Surgery, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Tetsuo Ishikawa
- Department of Radiation Physics and Chemistry, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Kenji Kamiya
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan Department of Experimental Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Akira Sakai
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
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Biological dosimetry to assess risks of health effects in victims of radiation accidents: Thirty years after Chernobyl. Radiother Oncol 2016; 119:1-4. [DOI: 10.1016/j.radonc.2016.02.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Accepted: 02/29/2016] [Indexed: 01/22/2023]
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Beh TT, MacKinnon RN, Kalitsis P. Active centromere and chromosome identification in fixed cell lines. Mol Cytogenet 2016; 9:28. [PMID: 27011768 PMCID: PMC4804480 DOI: 10.1186/s13039-016-0236-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Accepted: 03/17/2016] [Indexed: 02/01/2023] Open
Abstract
Background The centromere plays a crucial role in ensuring the fidelity of chromosome segregation during cell divisions. However, in cancer and constitutional disorders, the presence of more than one active centromere on a chromosome may be a contributing factor to chromosome instability and could also have predictive value in disease progression, making the detection of properly functioning centromeres important. Thus far, antibodies that are widely used for functional centromere detection mainly work on freshly harvested cells whereas most cytogenetic samples are stored long-term in methanol-acetic acid fixative. Hence, we aimed to identify antibodies that would recognise active centromere antigens on methanol-acetic acid fixed cells. Results A panel of active centromere protein antibodies was tested and we found that a rabbit monoclonal antibody against human CENP-C recognises the active centromeres of cells fixed in methanol-acetic acid. We then tested and compared combinations of established methods namely centromere fluorescence in situ hybridisation (cenFISH), centromere protein immunofluorescence (CENP-IF) and multicolour FISH (mFISH), and showed the usefulness of CENP-IF together with cenFISH followed by mFISH (CENP-IF-cenFISH-mFISH) with the aforementioned anti-CENP-C antibody. We further demonstrated the utility of our method in two cancer cell lines with high proportion of centromere defects namely neocentromere and functional dicentric. Conclusions We propose the incorporation of the CENP-IF-cenFISH-mFISH method using a commercially available rabbit monoclonal anti-CENP-C into established methods such as dicentric chromosome assay (DCA), prenatal karyotype screening in addition to constitutional and cancer karyotyping. This method will provide a more accurate assessment of centromere abnormality status in chromosome instability disorders.
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Affiliation(s)
- Thian T Beh
- Murdoch Childrens Research Institute, Royal Children's Hospital, Parkville, Melbourne, VIC 3052 Australia ; Department of Paediatrics, University of Melbourne, Royal Children's Hospital, Parkville, Melbourne, VIC 3052 Australia
| | - Ruth N MacKinnon
- Victorian Cancer Cytogenetics Service, St Vincent's Hospital, Fitzroy, Melbourne, VIC 3065 Australia ; Department of Medicine, St Vincent's Hospital, University of Melbourne, Fitzroy, Melbourne, VIC 3065 Australia
| | - Paul Kalitsis
- Murdoch Childrens Research Institute, Royal Children's Hospital, Parkville, Melbourne, VIC 3052 Australia ; Department of Paediatrics, University of Melbourne, Royal Children's Hospital, Parkville, Melbourne, VIC 3052 Australia
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