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Tolstykh EI, Vozilova AV, Akleyev AV, Zalyapin VI. Model of age-dependent dynamics and biokinetics of T-cells as natural biodosimeters. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2024:10.1007/s00411-024-01072-5. [PMID: 38829435 DOI: 10.1007/s00411-024-01072-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 04/25/2024] [Indexed: 06/05/2024]
Abstract
Circulating T-lymphocytes are used as "natural biodosimeters" for estimating radiation doses, since the frequency of chromosomal aberrations induced in them is proportional to the accumulated dose. Moreover, stable chromosomal aberrations (translocations) are detected years and decades after exposure. Internal incorporation of radionuclides often leads to non-uniform exposure, which resulted in difficulties in the application of retrospective biodosimetry using T-lymphocytes. Some properties of T-lymphocytes complicate retrospective biodosimetry in this case: (1) the thymic production of T-cells depends significantly on age, the maximum is observed in early childhood; (2) the "lymphocyte-dosimeter" accumulates changes (translocations) while circulating through the body. The objective of this paper is to describe the technical characteristics of the model of age dynamics and T-cell biokinetics and approaches to assessing the dose to circulating lymphocytes under various exposure scenarios. The model allows to quantify the fractions of T-lymphocytes that were formed before and after exposure. The model takes into account the time fractions that circulating lymphocytes spend in various lymphoid organs. Age-related thymic involution was also considered. The model predicts that after internal exposure to 90Sr, the doses to T-lymphocytes can differ significantly from the doses to the bone marrow and other tissues. For uniform external γ-exposure, and for internal exposure due to non-bone -seeking radionuclides (for example, 144Ce), predicted doses to T-lymphocytes are very close to bone marrow doses. The model allows to quantify the correction factors for FISH-based doses to obtain doses to organs and tissues.
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Affiliation(s)
- Evgenia I Tolstykh
- Urals Research Center for Radiation Medicine, 68-A, Vorovsky Street, Chelyabinsk, 454076, Russia.
| | - Alexandra V Vozilova
- Urals Research Center for Radiation Medicine, 68-A, Vorovsky Street, Chelyabinsk, 454076, Russia
| | - Alexander V Akleyev
- Urals Research Center for Radiation Medicine, 68-A, Vorovsky Street, Chelyabinsk, 454076, Russia
- Department of Radiation Biology, Chelyabinsk State University, Chelyabinsk, Russia
| | - Vladimir I Zalyapin
- Mathematical Analysis Department, South Ural State University, Chelyabinsk, Russia
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2
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Ferreira-Lucena LR, Xavier AISF, Netto AM, Magnata SDSLP, Siqueira Lima G, Amaral A. Extending culture time to improve Mitotic Index for cytogenetic dosimetry. Int J Radiat Biol 2024; 100:1029-1040. [PMID: 38787719 DOI: 10.1080/09553002.2024.2356545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 05/13/2024] [Indexed: 05/26/2024]
Abstract
PURPOSE To analyze the effects of extending lymphocyte cultivation time on the Mitotic Index, frequency of first-division cells, and dose estimation after irradiating blood samples with different doses of radiation. MATERIALS AND METHODS Blood samples from two healthy male volunteers were separately irradiated with three doses (3, 5, and 6 Gy) using a 60Co gamma source (average dose rate: 1.48 kGy.h-1) and cultivated in vitro for conventional (48 h) and extended (56, 68, and 72 h) amounts of time. Colcemid (0.01 µg.mL-1) was added at the beginning of the culture period. Cells were fixed, stained with fluorescence plus Giemsa (FPG), and analyzed under a light microscope. The effects of prolonged culture duration on the Mitotic Index (MI), frequency of first-division cells (M1 cells), and the First-Division Mitotic Index (FDMI) were investigated. The estimation of delivered doses was conducted using a conventional 48h-culture calibration curve. RESULTS Overall, cells presented higher MI (up to 12-fold) with the extension of culture, while higher radiation doses led to lower MI values (up to 80% reduction at 48 h). Cells irradiated with higher doses (5 and 6 Gy) had the most significant increase (5- to 12-fold) of MI as the cultivation was prolonged. The frequency of M1 cells decreased with the prolongation of culture for all doses (up to 75% reduction), while irradiated cells presented higher frequencies of M1 cells than non-irradiated ones. FDMI increased for all irradiated cultures but most markedly in those irradiated with higher doses (up to 10-fold). The conventional 48h-culture calibration curve proved adequate for assessing the delivered dose based on dicentric frequency following a 72-hour culture. CONCLUSION Compared to the conventional 48-hour protocol, extending the culture length to 72 hours significantly increased the Mitotic Index and the number of first-division metaphases of irradiated lymphocytes, providing slides with a better scorable metaphase density. Extending the culture time to 72 hours, combined with FPG staining to score exclusively first-division metaphases, improved the counting of dicentric chromosomes. The methodology presented and discussed in this study can be a powerful tool for dicentric-based biodosimetry, especially when exposure to high radiation doses is involved.
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Affiliation(s)
- Luciano Rodolfo Ferreira-Lucena
- Nuclear Energy Department, Laboratory of Modeling and Biological Dosimetry, Federal University of Pernambuco, Recife, Brazil
| | | | - André Maciel Netto
- Nuclear Energy Department, Laboratory of Modeling and Biological Dosimetry, Federal University of Pernambuco, Recife, Brazil
| | | | - Giovanna Siqueira Lima
- Nuclear Energy Department, Laboratory of Modeling and Biological Dosimetry, Federal University of Pernambuco, Recife, Brazil
| | - Ademir Amaral
- Nuclear Energy Department, Laboratory of Modeling and Biological Dosimetry, Federal University of Pernambuco, Recife, Brazil
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Draeger E, Roberts K, Decker RD, Bahar N, Wilson LD, Contessa J, Husain Z, Williams BB, Flood AB, Swartz HM, Carlson DJ. In Vivo Verification of Electron Paramagnetic Resonance Biodosimetry Using Patients Undergoing Radiation Therapy Treatment. Int J Radiat Oncol Biol Phys 2024; 119:292-301. [PMID: 38072322 DOI: 10.1016/j.ijrobp.2023.11.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/28/2023] [Accepted: 11/19/2023] [Indexed: 01/06/2024]
Abstract
PURPOSE Electron paramagnetic resonance (EPR) biodosimetry, used to triage large numbers of individuals incidentally exposed to unknown doses of ionizing radiation, is based on detecting a stable physical response in the body that is subject to quantifiable variation after exposure. In vivo measurement is essential to fully characterize the radiation response relevant to a living tooth measured in situ. The purpose of this study was to verify EPR spectroscopy in vivo by estimating the radiation dose received in participants' teeth. METHODS AND MATERIALS A continuous wave L-band spectrometer was used for EPR measurements. Participants included healthy volunteers and patients undergoing head and neck and total body irradiation treatments. Healthy volunteers completed 1 measurement each, and patients underwent measurement before starting treatment and between subsequent fractions. Optically stimulated luminescent dosimeters and diodes were used to determine the dose delivered to the teeth to validate EPR measurements. RESULTS Seventy measurements were acquired from 4 total body irradiation and 6 head and neck patients over 15 months. Patient data showed a linear increase of EPR signal with delivered dose across the dose range tested. A linear least-squares weighted fit of the data gave a statistically significant correlation between EPR signal and absorbed dose (P < .0001). The standard error of inverse prediction (SEIP), used to assess the usefulness of fits, was 1.92 Gy for the dose range most relevant for immediate triage (≤7 Gy). Correcting for natural background radiation based on patient age reduced the SEIP to 1.51 Gy. CONCLUSIONS This study demonstrated the feasibility of using spectroscopic measurements from radiation therapy patients to validate in vivo EPR biodosimetry. The data illustrated a statistically significant correlation between the magnitude of EPR signals and absorbed dose. The SEIP of 1.51 Gy, obtained under clinical conditions, indicates the potential value of this technique in response to large radiation events.
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Affiliation(s)
- Emily Draeger
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut.
| | - Kenneth Roberts
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut
| | - Roy D Decker
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut
| | - Nina Bahar
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut
| | - Lynn D Wilson
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut
| | - Joseph Contessa
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut
| | - Zain Husain
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut
| | - Benjamin B Williams
- Department of Radiology & EPR Center, Geisel Medical School at Dartmouth, Hanover, New Hampshire
| | - Ann Barry Flood
- Department of Radiology & EPR Center, Geisel Medical School at Dartmouth, Hanover, New Hampshire
| | - Harold M Swartz
- Department of Radiology & EPR Center, Geisel Medical School at Dartmouth, Hanover, New Hampshire
| | - David J Carlson
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut.
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Ferreira MF, Turner A, Vernon EL, Grisolia C, Lebaron-Jacobs L, Malard V, Jha AN. Tritium: Its relevance, sources and impacts on non-human biota. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 876:162816. [PMID: 36921857 DOI: 10.1016/j.scitotenv.2023.162816] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/06/2023] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
Tritium (3H) is a radioactive isotope of hydrogen that is abundantly released from nuclear industries. It is extremely mobile in the environment and in all biological systems, representing an increasing concern for the health of both humans and non-human biota (NHB). The present review examines the sources and characteristics of tritium in the environment, and evaluates available information pertaining to its biological effects at different levels of biological organisation in NHB. Despite an increasing number of publications in the tritium radiobiology field, there exists a significant disparity between data available for the different taxonomic groups and species, and observations are heavily biased towards marine bivalves, fish and mammals (rodents). Further limitations relate to the scarcity of information in the field relative to the laboratory, and lack of studies that employ forms of tritium other than tritiated water (HTO). Within these constraints, different responses to HTO exposure, from molecular to behavioural, have been reported during early life stages, but the potential transgenerational effects are unclear. The application of rapidly developing "omics" techniques could help to fill these knowledge gaps and further elucidate the relationships between molecular and organismal level responses through the development of radiation specific adverse outcome pathways (AOPs). The use of a greater diversity of keystone species and exposures to multiple stressors, elucidating other novel effects (e.g., by-stander, germ-line, transgenerational and epigenetic effects) offers opportunities to improve environmental risk assessments for the radionuclide. These could be combined with artificial intelligence (AI) including machine learning (ML) and ecosystem-based approaches.
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Affiliation(s)
- Maria Florencia Ferreira
- School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK
| | - Andrew Turner
- School of Geography, Earth and Environmental Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK
| | - Emily L Vernon
- School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK
| | | | | | - Veronique Malard
- Aix Marseille Univ, CEA, CNRS, BIAM, IPM, F-13108 Saint Paul-Lez-Durance, France
| | - Awadhesh N Jha
- School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK.
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5
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Tolstykh EI, Degteva MO, Vozilova AV, Akleyev AV. Approaches to Cytogenetic Assessment of the Dose due to Radiation Exposure of the Gut-Associated Lymphoid Tissue. BIOL BULL+ 2022. [DOI: 10.1134/s1062359022110206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Kendall GM, Little MP. The new study of UK nuclear test veterans. JOURNAL OF RADIOLOGICAL PROTECTION : OFFICIAL JOURNAL OF THE SOCIETY FOR RADIOLOGICAL PROTECTION 2022; 42:020101. [PMID: 35543442 DOI: 10.1088/1361-6498/ac6a23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 04/25/2022] [Indexed: 06/14/2023]
Affiliation(s)
- Gerry M Kendall
- Cancer Epidemiology Unit, Oxford Population Health, University of Oxford Old Road Campus, Oxford, OX3 7LF, United Kingdom
| | - Mark P Little
- 3821 Newark St NW, Apt B440, Washington DC 20016-3024, United States of America
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Ostheim P, Miederer M, Schreckenberger M, Nestler T, Hoffmann MA, Lassmann M, Eberlein U, Barsegian V, Rump A, Majewski M, Port M, Abend M. mRNA and small RNA gene expression changes in peripheral blood to detect internal Ra-223 exposure. Int J Radiat Biol 2021; 98:900-912. [PMID: 34882512 DOI: 10.1080/09553002.2021.1998705] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
PURPOSE Excretion analysis is the established method for detection of incorporated alpha-emitting radionuclides, but it is laborious and time consuming. We sought a simplified method in which changes in gene expression might be measured in human peripheral blood to detect incorporated radionuclides. Such an approach could be used to quickly determine internal exposure in instances of a radiological dispersal device or a radiation accident. MATERIALS AND METHODS We evaluated whole blood samples from five patients with castration-resistant prostate cancer and multiple bone metastases (without visceral or nodal involvement), who underwent treatment with the alpha emitting isotope Radium-223 dichloride (Ra-223, Xofigo®). Patients received about 4 MBq per cycle and, depending on survival and treatment tolerance, were followed for six months. We collected 24 blood samples approximately monthly corresponding to treatment cycle. RESULTS Firstly, we conducted whole genome screening of mRNAs (mRNA seq) and small RNAs (small RNA seq) using next generation sequencing in one patient at eight different time points during all six cycles of Ra-223-therapy. We identified 1900 mRNAs and 972 small RNAs (222 miRNAs) that were differentially up- or down-regulated during follow-up after the first treatment with Ra-223. Overall candidate RNA species inclusion criteria were a general (≥|2|-fold) change or with peaking profiles (≥|5|-fold) at specific points in time. Next we chose 72 candidate mRNAs and 101 small RNAs (comprising 29 miRNAs) for methodologic (n = 8 samples, one patient) and independent (n = 16 samples, four patients) validation by qRT-PCR. In total, 15 mRNAs (but no small RNAs) were validated by methodologic and independent testing. However, the deregulation occurred at different time points, showing a large inter-individual variability in response among patients. CONCLUSIONS This proof of concept provides support for the applicability of gene expression measurements to detect internalized alpha-emitting radionuclides, but further work is needed with a larger sample size. While our approach has merit for internal deposition monitoring, it was complicated by the severe clinical condition of the patients we studied.
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Affiliation(s)
| | - Matthias Miederer
- Clinic and Polyclinic for Nuclear Medicine, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Mathias Schreckenberger
- Clinic and Polyclinic for Nuclear Medicine, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Tim Nestler
- Department of Urology, Federal Armed Services Hospital Koblenz, Koblenz, Germany
| | - Manuela A Hoffmann
- Clinic and Polyclinic for Nuclear Medicine, University Medical Center of the Johannes Gutenberg University, Mainz, Germany.,Department of Occupational Health & Safety, Federal Ministry of Defense, Bonn, Germany
| | - Michael Lassmann
- Department of Nuclear Medicine, University of Würzburg, Würzburg, Germany
| | - Uta Eberlein
- Department of Nuclear Medicine, University of Würzburg, Würzburg, Germany
| | - Vahe Barsegian
- Institute of Nuclear Medicine, Helios Kliniken, Schwerin, Germany
| | - Alexis Rump
- Bundeswehr Institute of Radiobiology, Munich, Germany
| | - Mattháus Majewski
- Bundeswehr Institute of Radiobiology, Munich, Germany.,Department of Urology, Armed Services Hospital Ulm, Ulm, Germany
| | - Matthias Port
- Bundeswehr Institute of Radiobiology, Munich, Germany
| | - Michael Abend
- Bundeswehr Institute of Radiobiology, Munich, Germany
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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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Bodin L, Menetrier F. Treatment of radiological contamination: a review. JOURNAL OF RADIOLOGICAL PROTECTION : OFFICIAL JOURNAL OF THE SOCIETY FOR RADIOLOGICAL PROTECTION 2021; 41:S427-S437. [PMID: 34488204 DOI: 10.1088/1361-6498/ac241b] [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: 06/15/2021] [Accepted: 09/06/2021] [Indexed: 06/13/2023]
Abstract
After nuclear accidents, people can be contaminated internally via ingestion, inhalation and via intact skin or wounds. The assessment of absorbed, committed doses after internal exposure is based on activity measurement byin vivoorin vitrobioassay. Estimation of dose following internal contamination is dependent on understanding the nature and form of the radionuclide. Direct counting methods that directly measureγ-rays coming from within the body or bioassay methods that measure the amount of radioactive materials in urine or feces are used to estimate the intake, which is required for calculating internal exposure doses. The interpretation of these data in terms of intake and the lifetime committed dose requires knowledge or making assumptions about a number of parameters (time, type of exposure, route of the exposure, physical, biological and chemical characteristics) and their biokinetics inside the body. Radioactive materials incorporated into the body emit radiation within the body. Accumulation in some specific organs may occur depending on the types of radioactive materials. Decorporation therapy is that acceleration of the natural rate of elimination of the contaminant will reduce the amount of radioactivity retained in the body. This article presents an overview of treatment of radiological contamination after internal contamination.
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Ainsbury EA, Moquet J, Sun M, Barnard S, Ellender M, Lloyd D. The future of biological dosimetry in mass casualty radiation emergency response, personalized radiation risk estimation and space radiation protection. Int J Radiat Biol 2021; 98:421-427. [PMID: 34515621 DOI: 10.1080/09553002.2021.1980629] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
PURPOSE The aim of this brief personal, high level review is to consider the state of the art for biological dosimetry for radiation routine and emergency response, and the potential future progress in this fascinating and active field. Four areas in which biomarkers may contribute to scientific advancement through improved dose and exposure characterization, as well as potential contributions to personalized risk estimation, are considered: emergency dosimetry, molecular epidemiology, personalized medical dosimetry, and space travel. CONCLUSION Ionizing radiation biodosimetry is an exciting field which will continue to benefit from active networking and collaboration with the wider fields of radiation research and radiation emergency response to ensure effective, joined up approaches to triage; radiation epidemiology to assess long term, low dose, radiation risk; radiation protection of workers, optimization and justification of radiation for diagnosis or treatment of patients in clinical uses, and protection of individuals traveling to space.
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Affiliation(s)
- Elizabeth A Ainsbury
- Public Health England, Centre for Radiation, Chemical and Environmental Hazards, Chilton, UK.,Environmental Research Group within the School of Public Health, Faculty of Medicine at Imperial College of Science, Technology and Medicine, London, UK
| | - Jayne Moquet
- Public Health England, Centre for Radiation, Chemical and Environmental Hazards, Chilton, UK
| | - Mingzhu Sun
- Public Health England, Centre for Radiation, Chemical and Environmental Hazards, Chilton, UK
| | - Stephen Barnard
- Public Health England, Centre for Radiation, Chemical and Environmental Hazards, Chilton, UK
| | - Michele Ellender
- Public Health England, Centre for Radiation, Chemical and Environmental Hazards, Chilton, UK
| | - David Lloyd
- Public Health England, Centre for Radiation, Chemical and Environmental Hazards, Chilton, UK
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Sciuto R, Rea S, Ungania S, Testa A, Dini V, Tabocchini MA, Patrono C, Soriani A, Palma V, Marconi R, Strigari L. The role of dosimetry and biological effects in metastatic castration-resistant prostate cancer (mCRPC) patients treated with 223Ra: first in human study. J Exp Clin Cancer Res 2021; 40:281. [PMID: 34488829 PMCID: PMC8420003 DOI: 10.1186/s13046-021-02056-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 07/31/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND 223Ra is currently used for treatment of metastatic castration resistant prostate cancer patients (mCRPC) bone metastases with fixed standard activity. Individualized treatments, based on adsorbed dose (AD) in target and non-target tissue, are absolutely needed to optimize efficacy while reducing toxicity of α-emitter targeted therapy. This is a pilot first in human clinical trial aimed to correlate dosimetry, clinical response and biological side effects to personalize 223Ra treatment. METHODS Out of 20 mCRPC patients who underwent standard 223Ra treatment and dosimetry, in a subset of 5 patients the AD to target and non-target tissues was correlated with clinical effects and radiation-induced chromosome damages. Before each 223Ra administrations, haematological parameters, PSA and ALP values were evaluated. Additional blood samples were obtained baseline (T0), at 7 days (T7), 30 days (T30) and 180 days (T180) to evaluate chromosome damage. After administration WB planar 223Ra images were obtained at 2-4 and 18-24 h. Treatment response and toxicity were monitored with clinical evaluation, bone scan, 18F-choline-PET/CT, PSA value and ALP while haematological parameters were evaluated weekly after 223Ra injection and 2 months after last cycle. RESULTS 1. a correlation between AD to target and clinical response was evidenced with threshold of 20 Gy as a cut-off to obtain tumor control; 2. the AD to red marrow was lower than 2 Gy in all the patients with no apparently correlation between dosimetry and clinical toxicity. 3. a high dose dependent increase of the number of dicentrics and micronuclei during the course of 223Ra therapy was observed and a linear correlation has been found between blood AD (BAD) and number of dicentrics. CONCLUSIONS This study provides some interesting preliminary evidence to be further investigated: dosimetry may be useful to identify a more appropriate 223Ra administered activity predicting AD to target tissue; a dose dependent complex chromosome damage occurs during 223Ra administration and this injury is more evident in heavily pre-treated patients; dosimetry could be used for radioprotection purpose. TRIAL REGISTRATION The pilot study has been approved from the Ethics Committee of Regina Elena National Cancer Institute (N:RS1083/18-2111).
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Affiliation(s)
- Rosa Sciuto
- Nuclear Medicine Unit, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Sandra Rea
- Nuclear Medicine Unit, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Sara Ungania
- Laboratory of Medical Physics, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Antonella Testa
- Division of Health Protection Technologies, ENEA Casaccia Research Center, Rome, Italy
| | - Valentina Dini
- National Center for Innovative Technologies in Public Health, Istituto Superiore di Sanità, Rome, Italy
- INFN, Rome, Italy
| | - Maria Antonella Tabocchini
- National Center for Innovative Technologies in Public Health, Istituto Superiore di Sanità, Rome, Italy
- INFN, Rome, Italy
| | - Clarice Patrono
- Division of Health Protection Technologies, ENEA Casaccia Research Center, Rome, Italy
| | - Antonella Soriani
- Laboratory of Medical Physics, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Valentina Palma
- Division of Health Protection Technologies, ENEA Casaccia Research Center, Rome, Italy
| | - Raffaella Marconi
- Laboratory of Medical Physics, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Lidia Strigari
- Laboratory of Medical Physics, IRCCS Regina Elena National Cancer Institute, Rome, Italy.
- Present address: Department of Medical Physics, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.
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Harrison RM, Ainsbury E, Alves J, Bottollier-Depois JF, Breustedt B, Caresana M, Clairand I, Fantuzzi E, Fattibene P, Gilvin P, Hupe O, Knežević Ž, Lopez MA, Olko P, Olšovcová V, Rabus H, Rühm W, Silari M, Stolarczyk L, Tanner R, Vanhavere F, Vargas A, Woda C. EURADOS STRATEGIC RESEARCH AGENDA 2020: VISION FOR THE DOSIMETRY OF IONISING RADIATION. RADIATION PROTECTION DOSIMETRY 2021; 194:42-56. [PMID: 33989429 PMCID: PMC8165425 DOI: 10.1093/rpd/ncab063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/28/2021] [Accepted: 04/06/2021] [Indexed: 05/02/2023]
Abstract
Since 2012, the European Radiation Dosimetry Group (EURADOS) has developed its Strategic Research Agenda (SRA), which contributes to the identification of future research needs in radiation dosimetry in Europe. Continued scientific developments in this field necessitate regular updates and, consequently, this paper summarises the latest revision of the SRA, with input regarding the state of the art and vision for the future contributed by EURADOS Working Groups and through a stakeholder workshop. Five visions define key issues in dosimetry research that are considered important over at least the next decade. They include scientific objectives and developments in (i) updated fundamental dose concepts and quantities, (ii) improved radiation risk estimates deduced from epidemiological cohorts, (iii) efficient dose assessment for radiological emergencies, (iv) integrated personalised dosimetry in medical applications and (v) improved radiation protection of workers and the public. This SRA will be used as a guideline for future activities of EURADOS Working Groups but can also be used as guidance for research in radiation dosimetry by the wider community. It will also be used as input for a general European research roadmap for radiation protection, following similar previous contributions to the European Joint Programme for the Integration of Radiation Protection Research, under the Horizon 2020 programme (CONCERT). The full version of the SRA is available as a EURADOS report (www.eurados.org).
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Affiliation(s)
| | - E Ainsbury
- Public Health England, Chilton, Didcot, UK
| | - J Alves
- Instituto Superior Técnico (IST), CTN, Lisboa, Portugal
| | - J-F Bottollier-Depois
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Fontenay-aux-Roses Cedex, France
| | - B Breustedt
- Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | | | - I Clairand
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Fontenay-aux-Roses Cedex, France
| | - E Fantuzzi
- ENEA - Radiation Protection Institute, Bologna, Italy
| | - P Fattibene
- Istituto Superiore di Sanità (ISS), Rome, Italy
| | - P Gilvin
- Public Health England, Chilton, Didcot, UK
| | - O Hupe
- Physikalisch Technische Bundesanstalt (PTB), Braunschweig and Berlin, Germany
| | - Ž Knežević
- Ruđer Bošković Institute (RBI), Zagreb, Croatia
| | - M A Lopez
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
| | - P Olko
- Instytut Fizyki Jądrowej Polskiej Akademii Nauk (IFJ PAN), Kraków, Poland
| | - V Olšovcová
- ELI Beamlines, Institute of Physics, Czech Academy of Sciences, Dolní Břežany, Czech Republic
| | - H Rabus
- Physikalisch Technische Bundesanstalt (PTB), Braunschweig and Berlin, Germany
| | - W Rühm
- Helmholtz Zentrum München, Institute of Radiation Medicine, Neuherberg, Germany
| | - M Silari
- CERN, 1211 Geneva 23, Switzerland
| | - L Stolarczyk
- Danish Centre for Particle Therapy, Aarhus, Denmark
- Instytut Fizyki Jądrowej Polskiej Akademii Nauk (IFJ PAN), Kraków, Poland
| | - R Tanner
- Public Health England, Chilton, Didcot, UK
| | - F Vanhavere
- Belgian Nuclear Research Centre (SCK-CEN), Mol, Belgium
| | - A Vargas
- Institute of Energy Technologies, Universitat Politecnica de Catalunya, Barcelona, Spain
| | - C Woda
- Helmholtz Zentrum München, Institute of Radiation Medicine, Neuherberg, Germany
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13
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Shuryak I, Ghandhi SA, Turner HC, Weber W, Melo D, Amundson SA, Brenner DJ. Dose and Dose-Rate Effects in a Mouse Model of Internal Exposure from 137Cs. Part 2: Integration of Gamma-H2AX and Gene Expression Biomarkers for Retrospective Radiation Biodosimetry. Radiat Res 2020; 196:491-500. [PMID: 33064820 DOI: 10.1667/rade-20-00042.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 08/13/2020] [Indexed: 11/03/2022]
Abstract
Inhalation and ingestion of 137Cs and other long-lived radionuclides can occur after large-scale accidental or malicious radioactive contamination incidents, resulting in a complex temporal pattern of radiation dose/dose rate, influenced by radionuclide pharmacokinetics and chemical properties. High-throughput radiation biodosimetry techniques for such internal exposure are needed to assess potential risks of short-term toxicity and delayed effects (e.g., carcinogenesis) for exposed individuals. Previously, we used γ-H2AX to reconstruct injected 137Cs activity in experimentally-exposed mice, and converted activity values into radiation doses based on time since injection and 137Cs-elimination kinetics. In the current study, we sought to assess the feasibility and possible advantages of combining γ-H2AX with transcriptomics to improve 137Cs activity reconstructions. We selected five genes (Atf5, Hist2h2aa2, Olfr358, Psrc1, Hist2h2ac) with strong statistically-significant Spearman's correlations with injected activity and stable expression over time after 137Cs injection. The geometric mean of log-transformed signals of these five genes, combined with γ-H2AX fluorescence, were used as predictors in a nonlinear model for reconstructing injected 137Cs activity. The coefficient of determination (R2) comparing actual and reconstructed activities was 0.91 and root mean squared error (RMSE) was 0.95 MBq. These metrics remained stable when the model was fitted to a randomly-selected half of the data and tested on the other half, repeated 100 times. Model performance was significantly better when compared to our previous analysis using γ-H2AX alone, and when compared to an analysis where genes are used without γ-H2AX, suggesting that integrating γ-H2AX with gene expression provides an important advantage. Our findings show a proof of principle that integration of radiation-responsive biomarkers from different fields is promising for radiation biodosimetry of internal emitters.
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Affiliation(s)
- Igor Shuryak
- Center for Radiological Research, Columbia University Irving Medical Center, New York, New York 10032
| | - Shanaz A Ghandhi
- Center for Radiological Research, Columbia University Irving Medical Center, New York, New York 10032
| | - Helen C Turner
- Center for Radiological Research, Columbia University Irving Medical Center, New York, New York 10032
| | - Waylon Weber
- Lovelace Biomedical, Albuquerque, New Mexico, 87108
| | | | - Sally A Amundson
- Center for Radiological Research, Columbia University Irving Medical Center, New York, New York 10032
| | - David J Brenner
- Center for Radiological Research, Columbia University Irving Medical Center, New York, New York 10032
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