1
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Okazaki Y, Kusumoto T, Roux S, Hirayama R, Fromm M, Bazzi R, Kodaira S, Kataoka J. Increase of OH radical yields due to the decomposition of hydrogen peroxide by gold nanoparticles under X-ray irradiation. RSC Adv 2024; 14:9509-9513. [PMID: 38516151 PMCID: PMC10953845 DOI: 10.1039/d4ra00208c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 03/14/2024] [Indexed: 03/23/2024] Open
Abstract
We elucidate the decomposition mechanism of hydrogen peroxide, which is formed by water radiolysis, by gold nanoparticles (GNPs) under X-ray irradiation. The variations in yields of hydrogen peroxide generated in the presence of GNPs are evaluated using the Ghormley technique. The increase of yields of OH radicals has been quantified using Ampliflu® Red solutions. Almost all hydrogen peroxide generated by irradiation of <25 Gy is decomposed by GNPs, while the yield of OH radicals increases by 1.6 times. The amount of OH radicals thus obtained is almost equivalent to that of the decomposed hydrogen peroxide. The decomposition of hydrogen peroxide is an essential reaction to produce additional OH radicals efficiently in the vicinity of GNPs.
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Affiliation(s)
- Yu Okazaki
- Graduate School of Advanced Science and Engineering, Waseda University 3-4-1 Okubo, Shinjuku-ku Tokyo 169-8555 Japan
| | - Tamon Kusumoto
- National Institutes for Quantum Science and Technology (QST) 4-9-1 Anagawa, Inage-ku Chiba 263-8555 Japan
| | - Stephane Roux
- UMR CNRS 6249 Chrono-Environnement, Université de Franche-Comté F-25030 Besançon Cedex France
| | - Ryoichi Hirayama
- National Institutes for Quantum Science and Technology (QST) 4-9-1 Anagawa, Inage-ku Chiba 263-8555 Japan
| | - Michel Fromm
- UMR CNRS 6249 Chrono-Environnement, Université de Franche-Comté F-25030 Besançon Cedex France
| | - Rana Bazzi
- UMR CNRS 6249 Chrono-Environnement, Université de Franche-Comté F-25030 Besançon Cedex France
| | - Satoshi Kodaira
- National Institutes for Quantum Science and Technology (QST) 4-9-1 Anagawa, Inage-ku Chiba 263-8555 Japan
| | - Jun Kataoka
- Graduate School of Advanced Science and Engineering, Waseda University 3-4-1 Okubo, Shinjuku-ku Tokyo 169-8555 Japan
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2
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Shepard C, Kanai Y. Ion-Type Dependence of DNA Electronic Excitation in Water under Proton, α-Particle, and Carbon Ion Irradiation: A First-Principles Simulation Study. J Phys Chem B 2023; 127:10700-10709. [PMID: 37943091 DOI: 10.1021/acs.jpcb.3c05446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Understanding how the electronic excitation of DNA changes in response to different high-energy particles is central to advancing ion beam cancer therapy and other related approaches, such as boron neutron capture therapy. While protons have been the predominant ions of choice in ion beam cancer therapy, heavier ions, particularly carbon ions, have drawn significant attention over the past decade. Carbon ions are expected to transfer larger amounts of energy according to linear response theory. However, molecular-level details of the electronic excitation under heavier ion irradiation remain unknown. In this work, we use real-time time-dependent density functional theory simulations to examine the quantum-mechanical details of DNA electronic excitations in water under proton, α-particle, and carbon ion irradiation. Our results show that the energy transfer does indeed increase for the heavier ions, while the excitation remains highly conformal. However, the increase in the energy transfer rate, measured by electronic stopping power, does not match the prediction by the linear response model, even when accounting for the velocity dependence of the irradiating ion's charge. The simulations also reveal that while the number of holes generated on DNA increases for heavier ions, the increase is only partially responsible for the larger stopping power. Larger numbers of highly energetic holes formed from the heavier ions also contribute significantly to the increased electronic stopping power.
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Affiliation(s)
- Christopher Shepard
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27514, United States
| | - Yosuke Kanai
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27514, United States
- Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27514, United States
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3
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Penabeï S, Sepulveda E, Zakaria AM, Meesungnoen J, Jay-Gerin JP. Effect of Linear Energy Transfer on Cystamine's Radioprotective Activity: A Study Using the Fricke Dosimeter with 6-500 MeV per Nucleon Carbon Ions-Implication for Carbon Ion Hadrontherapy. Molecules 2023; 28:8144. [PMID: 38138632 PMCID: PMC10746108 DOI: 10.3390/molecules28248144] [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: 10/23/2023] [Revised: 12/01/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023] Open
Abstract
(1) Background: Radioprotective agents have garnered considerable interest due to their prospective applications in radiotherapy, public health medicine, and situations of large-scale accidental radiation exposure or impending radiological emergencies. Cystamine, an organic diamino-disulfide compound, is recognized for its radiation-protective and antioxidant properties. This study aims to utilize the aqueous ferrous sulfate (Fricke) dosimeter to measure the free-radical scavenging capabilities of cystamine during irradiation by fast carbon ions. This analysis spans an energy range from 6 to 500 MeV per nucleon, which correlates with "linear energy transfer" (LET) values ranging from approximately 248 keV/μm down to 9.3 keV/μm. (2) Methods: Monte Carlo track chemistry calculations were used to simulate the radiation-induced chemistry of aerated Fricke-cystamine solutions across a broad spectrum of cystamine concentrations, ranging from 10-6 to 1 M. (3) Results: In irradiated Fricke solutions containing cystamine, cystamine is observed to hinder the oxidation of Fe2+ ions, an effect triggered by oxidizing agents from the radiolysis of acidic water, resulting in reduced Fe3+ ion production. Our simulations, conducted both with and without accounting for the multiple ionization of water, confirm cystamine's ability to capture free radicals, highlighting its strong antioxidant properties. Aligning with prior research, our simulations also indicate that the protective and antioxidant efficiency of cystamine diminishes with increasing LET of the radiation. This result can be attributed to the changes in the geometry of the track structures when transitioning from lower to higher LETs. (4) Conclusions: If we can apply these fundamental research findings to biological systems at a physiological pH, the use of cystamine alongside carbon-ion hadrontherapy could present a promising approach to further improve the therapeutic ratio in cancer treatments.
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Affiliation(s)
| | | | | | | | - Jean-Paul Jay-Gerin
- Département de Médecine Nucléaire et de Radiobiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, 3001, 12ème Avenue Nord, Sherbrooke, QC J1H 5N4, Canada; (S.P.); (E.S.); (A.M.Z.); (J.M.)
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4
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Barcellini A, Fodor A, Charalampopoulou A, Cassani C, Locati LD, Cioffi R, Bergamini A, Pignata S, Orlandi E, Mangili G. Radiation Therapy for Gestational Trophoblastic Neoplasia: Forward-Looking Lessons Learnt. Cancers (Basel) 2023; 15:4817. [PMID: 37835511 PMCID: PMC10571950 DOI: 10.3390/cancers15194817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/20/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
Gestational trophoblastic neoplasia (GTN) includes several rare malignant diseases occurring after pregnancy: invasive moles, choriocarcinoma, placental site trophoblastic tumours, and epithelioid trophoblastic tumours. Multidisciplinary protocols including multi-agent chemotherapy, surgery, and occasionally radiotherapy achieve good outcomes for some high-risk metastatic patients. In this narrative review of the published studies on the topic, we have tried to identify the role of radiotherapy. The available studies are mainly small, old, and retrospective, with incomplete data regarding radiotherapy protocols delivering low doses (which can make this disease appear radioresistant in some cases despite high response rates with palliative doses) to wide fields (whole-brain, whole-liver, etc.), which can increase toxicity. Studies considering modern techniques are needed to overcome these limitations and determine the full potential of radiotherapy beyond its antihemorrhagic and palliative roles.
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Affiliation(s)
- Amelia Barcellini
- Radiation Oncology Unit, Clinical Department, CNAO National Center for Oncological Hadrontherapy, 27100 Pavia, Italy;
- Department of Internal Medicine and Medical Therapy, University of Pavia, 27100 Pavia, Italy;
| | - Andrei Fodor
- Department of Radiation Oncology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy;
| | - Alexandra Charalampopoulou
- Radiobiology Unit, Research and Development Department, CNAO National Center for Oncological Hadrontherapy, 27100 Pavia, Italy;
- Hadron Academy PhD Course, Istituto Universitario di STUDI Superiori (IUSS), 27100 Pavia, Italy
| | - Chiara Cassani
- Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy;
- Unit of Obstetrics and Gynecology, IRCCS, Fondazione Policlinico San Matteo, 27100 Pavia, Italy
| | - Laura Deborah Locati
- Department of Internal Medicine and Medical Therapy, University of Pavia, 27100 Pavia, Italy;
- Translational Oncology Unit, Maugeri Clinical Research Institutes IRCCS, 27100 Pavia, Italy
| | - Raffaella Cioffi
- Unit of Gynaecology and Obstetrics, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy; (R.C.); (A.B.); (G.M.)
| | - Alice Bergamini
- Unit of Gynaecology and Obstetrics, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy; (R.C.); (A.B.); (G.M.)
| | - Sandro Pignata
- Department of Urology and Gynecology, Istituto Nazionale Tumori, IRCCS-Fondazione G. Pascale Napoli, 80131 Naples, Italy;
| | - Ester Orlandi
- Radiation Oncology Unit, Clinical Department, CNAO National Center for Oncological Hadrontherapy, 27100 Pavia, Italy;
| | - Giorgia Mangili
- Unit of Gynaecology and Obstetrics, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy; (R.C.); (A.B.); (G.M.)
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5
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Audouin J, Hofverberg P, Ngono-Ravache Y, Desorgher L, Baldacchino G. Intermediate LET-like effect in distal part of proton Bragg peak revealed by track-ends imaging during super-Fricke radiolysis. Sci Rep 2023; 13:15460. [PMID: 37726376 PMCID: PMC10509149 DOI: 10.1038/s41598-023-42639-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 09/13/2023] [Indexed: 09/21/2023] Open
Abstract
Upstream of the efficiency of proton or carbon ion beams in cancer therapy, and to optimize hadrontherapy results, we analysed the chemistry of Fricke solutions in track-end of 64-MeV protons and 1.14-GeV carbon ions. An original optical setup is designed to determine the primary track-segment yields along the last millimetres of the ion track with a sub-millimetre resolution. The Fe3+-yield falls in the Bragg peak to (4.9 ± 0.4) × 10-7 mol/J and 1.9 × 10-7 mol/J, under protons and carbon ions respectively. Beyond the Bragg peak, a yield recovery is observed over 1 mm for proton beams. It is attributed to the intermediate-LET of protons in this region where their energy decreases and energy distribution becomes broader, in relation with the longitudinal straggling of the beam. Consequently to this LET decrease in the distal part of the Bragg peak, Fe3+-yield increases. For the first time, this signature is highlighted at the chemical level under proton irradiation. Nevertheless, this phenomenon is not identified for carbon ion beams since their straggling is lower. It would need a greater spatial resolution to be observed.
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Affiliation(s)
- J Audouin
- Université Paris-Saclay, CEA, CNRS, LIDYL, 91191, Gif-sur-Yvette, France
| | | | - Y Ngono-Ravache
- CIMAP, CEA-CNRS-ENSICAEN-UNICAEN, Normandy University, Cedex 04, 14050, Caen, France
| | - L Desorgher
- Institute of Radiation Physics (IRA), Lausanne University Hospital and University of Lausanne, CH-1007, Lausanne, Switzerland
| | - G Baldacchino
- Université Paris-Saclay, CEA, CNRS, LIDYL, 91191, Gif-sur-Yvette, France.
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6
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Sokol O, Durante M. Carbon Ions for Hypoxic Tumors: Are We Making the Most of Them? Cancers (Basel) 2023; 15:4494. [PMID: 37760464 PMCID: PMC10526811 DOI: 10.3390/cancers15184494] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/07/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
Hypoxia, which is associated with abnormal vessel growth, is a characteristic feature of many solid tumors that increases their metastatic potential and resistance to radiotherapy. Carbon-ion radiation therapy, either alone or in combination with other treatments, is one of the most promising treatments for hypoxic tumors because the oxygen enhancement ratio decreases with increasing particle LET. Nevertheless, current clinical practice does not yet fully benefit from the use of carbon ions to tackle hypoxia. Here, we provide an overview of the existing experimental and clinical evidence supporting the efficacy of C-ion radiotherapy in overcoming hypoxia-induced radioresistance, followed by a discussion of the strategies proposed to enhance it, including different approaches to maximize LET in the tumors.
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Affiliation(s)
- Olga Sokol
- Biophysics Department, GSI Helmholtzzentrum für Schwerionenforchung, Planckstraße 1, 64291 Darmstadt, Germany;
| | - Marco Durante
- Biophysics Department, GSI Helmholtzzentrum für Schwerionenforchung, Planckstraße 1, 64291 Darmstadt, Germany;
- Institute for Condensed Matter Physics, Technische Universität Darmstadt, Hochschulstraße 8, 64289 Darmstadt, Germany
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7
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Chappuis F, Tran HN, Zein SA, Bailat C, Incerti S, Bochud F, Desorgher L. The general-purpose Geant4 Monte Carlo toolkit and its Geant4-DNA extension to investigate mechanisms underlying the FLASH effect in radiotherapy: Current status and challenges. Phys Med 2023; 110:102601. [PMID: 37201453 DOI: 10.1016/j.ejmp.2023.102601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 04/06/2023] [Accepted: 05/01/2023] [Indexed: 05/20/2023] Open
Abstract
FLASH radiotherapy is a promising approach to cancer treatment that offers several advantages over conventional radiotherapy. With this novel technique, high doses of radiation are delivered in a short period of time, inducing the so-called FLASH effect - a phenomenon characterized by healthy tissue sparing without alteration of tumor control. The mechanisms behind the FLASH effect remain unknown. One way to approach this problem is to gain insight into the initial parameters that can distinguish FLASH from conventional irradiation by simulating particle transport in aqueous media using the general-purpose Geant4 Monte Carlo toolkit and its Geant4-DNA extension. This review article discusses the current status of Geant4 and Geant4-DNA simulations to investigate mechanisms underlying the FLASH effect, as well as the challenges faced in this research field. One of the primary challenges is to accurately simulate the experimental irradiation parameters. Another challenge is the temporal extension of the simulations. This review also focuses on two hypotheses to explain the FLASH effect - namely the oxygen depletion hypothesis and the inter-track interactions hypothesis - and discusses how the Geant4 toolkit can be used to investigate them. The aim of this review is to provide an overview of Geant4 and Geant4-DNA simulations for FLASH radiotherapy and to highlight the challenges that need to be overcome in order to better study the FLASH effect.
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Affiliation(s)
- Flore Chappuis
- Institute of Radiation Physics (IRA), Lausanne University Hospital and University of Lausanne, CH-1007 Lausanne, Switzerland
| | - Hoang Ngoc Tran
- Univ. Bordeaux, CNRS, LP2I Bordeaux, UMR 5797, F-33170 Gradignan, France
| | - Sara A Zein
- Univ. Bordeaux, CNRS, LP2I Bordeaux, UMR 5797, F-33170 Gradignan, France
| | - Claude Bailat
- Institute of Radiation Physics (IRA), Lausanne University Hospital and University of Lausanne, CH-1007 Lausanne, Switzerland
| | - Sébastien Incerti
- Univ. Bordeaux, CNRS, LP2I Bordeaux, UMR 5797, F-33170 Gradignan, France
| | - François Bochud
- Institute of Radiation Physics (IRA), Lausanne University Hospital and University of Lausanne, CH-1007 Lausanne, Switzerland
| | - Laurent Desorgher
- Institute of Radiation Physics (IRA), Lausanne University Hospital and University of Lausanne, CH-1007 Lausanne, Switzerland.
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8
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Wang Y, Mezyk SP, McLachlan JR, Grimes TS, Zalupski PR, O'Bryan HMT, Cook AR, Abergel RJ, Horne GP. Radiolytic Evaluation of 3,4,3-LI(1,2-HOPO) in Aqueous Solutions. J Phys Chem B 2023; 127:3931-3938. [PMID: 37084416 DOI: 10.1021/acs.jpcb.3c01469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/23/2023]
Abstract
The octadentate hydroxypyridinone ligand 3,4,3-LI(1,2-HOPO) (abbreviated as HOPO) has been identified as a promising candidate for both chelation and f-element separation technologies, two applications that require optimal performance in radiation environments. However, the radiation robustness of HOPO is currently unknown. Here, we employ a combination of time-resolved (electron pulse) and steady-state (alpha self-radiolysis) irradiation techniques to elucidate the basic chemistry of HOPO and its f-element complexes in aqueous radiation environments. Chemical kinetics were measured for the reaction of HOPO and its Nd(III) ion complex ([NdIII(HOPO)]-) with key aqueous radiation-induced radical transients (eaq-, H• atom, and •OH and NO3• radicals). The reaction of HOPO with the eaq- is believed to proceed via reduction of the hydroxypyridinone moiety, while transient adduct spectra indicate that reactions with the H• atom and •OH and NO3• radicals proceeded by addition to HOPO's hydroxypyridinone rings, potentially allowing for the generation of an extensive suite of addition products. Complementary steady-state 241Am(III)-HOPO complex ([241AmIII(HOPO)]-) irradiations showed the gradual release of 241Am(III) ions with increasing alpha dose up to 100 kGy, although complete ligand destruction was not observed.
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Affiliation(s)
- Yufei Wang
- Department of Nuclear Engineering, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Center for Radiation Chemistry Research, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| | - Stephen P Mezyk
- Department of Chemistry and Biochemistry, California State University Long Beach, Long Beach, California 90804, United States
| | - Jeffrey R McLachlan
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Travis S Grimes
- Center for Radiation Chemistry Research, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| | - Peter R Zalupski
- Center for Radiation Chemistry Research, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| | - Hailie M T O'Bryan
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Andrew R Cook
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Rebecca J Abergel
- Department of Nuclear Engineering, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Gregory P Horne
- Center for Radiation Chemistry Research, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
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9
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Chappuis F, Grilj V, Tran HN, Zein SA, Bochud F, Bailat C, Incerti S, Desorgher L. Modeling of scavenging systems in water radiolysis with Geant4-DNA. Phys Med 2023; 108:102549. [PMID: 36921424 DOI: 10.1016/j.ejmp.2023.102549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 01/11/2023] [Accepted: 02/13/2023] [Indexed: 03/16/2023] Open
Abstract
PURPOSE This paper presents the capabilities of the Geant4-DNA Monte Carlo toolkit to simulate water radiolysis with scavengers using the step-by-step (SBS) or the independent reaction times (IRT) methods. It features two examples of application areas: (1) computing the escape yield of H2O2 following a 60Co γ-irradiation and (2) computing the oxygen depletion in water irradiated with 1 MeV electrons. METHODS To ease the implementation of the chemical stage in Geant4-DNA, we developed a user interface that helps define the chemical reactions and set the concentration of scavengers. The first application area example required two computational steps to perform water radiolysis using NO2- and NO3- as scavengers and a 60Co irradiation. The oxygen depletion computation technique for the second application area example consisted of simulating track segments of 1 MeV electrons and determining the radio-induced loss and gain of oxygen molecules. RESULTS The production of H2O2 under variable scavenging levels is consistent with the literature; the mean relative difference between the SBS and IRT methods is 7.2 % ± 0.5 %. For the oxygen depletion 1 µs post-irradiation, the mean relative difference between both methods is equal to 9.8 % ± 0.3 %. The results in the microsecond scale depend on the initial partial pressure of oxygen in water. In addition, the computed oxygen depletions agree well with the literature. CONCLUSIONS The Geant4-DNA toolkit makes it possible to simulate water radiolysis in the presence of scavengers. This feature offers perspectives in radiobiology, with the possibility of simulating cell-relevant scavenging mechanisms.
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Affiliation(s)
- Flore Chappuis
- Institute of Radiation Physics (IRA), Lausanne University Hospital and University of Lausanne, CH-1007 Lausanne, Switzerland
| | - Veljko Grilj
- Institute of Radiation Physics (IRA), Lausanne University Hospital and University of Lausanne, CH-1007 Lausanne, Switzerland
| | - Hoang Ngoc Tran
- Univ. Bordeaux, CNRS, LP2I Bordeaux, UMR 5797, F-33170 Gradignan, France
| | - Sara A Zein
- Univ. Bordeaux, CNRS, LP2I Bordeaux, UMR 5797, F-33170 Gradignan, France
| | - François Bochud
- Institute of Radiation Physics (IRA), Lausanne University Hospital and University of Lausanne, CH-1007 Lausanne, Switzerland
| | - Claude Bailat
- Institute of Radiation Physics (IRA), Lausanne University Hospital and University of Lausanne, CH-1007 Lausanne, Switzerland
| | - Sébastien Incerti
- Univ. Bordeaux, CNRS, LP2I Bordeaux, UMR 5797, F-33170 Gradignan, France
| | - Laurent Desorgher
- Institute of Radiation Physics (IRA), Lausanne University Hospital and University of Lausanne, CH-1007 Lausanne, Switzerland.
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10
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Maeyama T, Mochizuki A, Yoshida K, Fukunishi N, Ishikawa KL, Fukuda S. Radio-fluorogenic nanoclay gel dosimeters with reduced linear energy transfer dependence for carbon-ion beam radiotherapy. Med Phys 2023; 50:1073-1085. [PMID: 36335533 DOI: 10.1002/mp.16092] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 10/07/2022] [Accepted: 10/25/2022] [Indexed: 11/08/2022] Open
Abstract
PURPOSE The precise assessment of the dose distribution of high linear energy transfer (LET) radiation remains a challenge, because the signal of most dosimeters will be saturated due to the high ionization density. Such measurements are particularly important for heavy-ion beam cancer therapy. On this basis, the present work examined the high LET effect associated with three-dimensional gel dosimetry based on radiation-induced chemical reactions. The purpose of this study was to create an ion beam radio-fluorogenic gel dosimeter with a reduced effect of LET. METHODS Nanoclay radio-fluorogenic gel (NC-RFG) dosimeters were prepared, typically containing 100 μM dihydrorhodamine 123 (DHR123) and 2.0 wt% nanoclay together with catalytic additives promoting Fenton or Fenton-like reactions. The radiological properties of NC-RFG dosimeters having different compositions in response to a carbon-ion beam were investigated using a fluorescence gel scanner. RESULTS An NC-RFG dosimeter capable of generating a fluorescence intensity distribution reflecting the carbon-ion beam dose profile was obtained. It was clarified that the reduction of the unfavorable LET dependence results from an acceleration of the reactions between DHR123 and H2 O2 , which is a molecular radiolysis product. The effects of varying the preparation conditions on the radiological properties of these gels were also examined. The optimum H2 O2 catalyst was determined to include 1 mM Fe3+ ions, and the addition of 100 mM pyridine was also found to increase the sensitivity. CONCLUSIONS This technique allows the first-ever evaluation of the depth-dose profile of a carbon-ion beam at typical therapeutic levels of several Gy without LET effect.
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Affiliation(s)
- Takuya Maeyama
- Department of Chemistry, School of Science, Kitasato University, Sagamihara, Kanagawa, Japan.,RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama, Japan
| | - Anri Mochizuki
- Department of Chemistry, School of Science, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Kazuki Yoshida
- Department of Chemistry, School of Science, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Nobuhisa Fukunishi
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama, Japan
| | - Kenichi L Ishikawa
- Department of Nuclear Engineering and Management, Graduate School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Shigekazu Fukuda
- QST Hospital, National Institutes for Quantum Science and Technology, Inage-ku, Chiba, Japan
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11
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H2 production from the radiolysis of aqueous suspensions of ZnO nanoparticles by 5.5 MeV He2+ ions. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Domnanich KA, Severin GW. A Model for Radiolysis in a Flowing-Water Target during High-Intensity Proton Irradiation. ACS OMEGA 2022; 7:25860-25873. [PMID: 35910120 PMCID: PMC9330261 DOI: 10.1021/acsomega.2c03540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
At the Facility for Rare Isotope Beams (FRIB), interactions between heavy-ion beams and beam-dump water will create a wide variety of radionuclides which can be accessed by a technique known as "isotope harvesting". However, irradiation of water is always accompanied by the creation of numerous radical, ionic, and molecular radiolysis products. Some of the radiolysis products have sufficiently long lifetimes to accumulate in the irradiated water and affect the harvesting chemistry. Here we investigate the formation of hydrogen peroxide, molecular hydrogen, and molecular oxygen during a high-intensity proton irradiation of a flowing-water isotope-harvesting target and compare the experimental results to simulations. The simulations kinetically model the chemical reactions occurring in the homogeneous phase of radiolysis in flowing water and establish an "effective yield". In both the experiment and simulations, the bulk quantities of H2, H2O2, and O2 are considerably lower than predicted by primary radiolysis yields (escape yields), meaning that in the high beam intensity regime the homogeneous phase reactions have a considerable impact on the overall chemical composition of the water. Further, it could be shown that for radiation which is characterized by a limited linear energy transfer, such as the here applied protons, the bulk outcome of the microscopic kinetic modeling could be estimated by a simplified steady-state model.
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13
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Kusumoto T, Inaniwa T, Mizushima K, Sato S, Hojo S, Kitamura H, Konishi T, Kodaira S. Radiation Chemical Yields of 7-Hydroxy-Coumarin-3-Carboxylic Acid for Proton- and Carbon-Ion Beams at Ultra-High Dose Rates: Potential Roles in FLASH Effects. Radiat Res 2022; 198:255-262. [PMID: 35738014 DOI: 10.1667/rade-21-00.230.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 06/06/2022] [Indexed: 11/03/2022]
Abstract
It has been observed that healthy tissues are spared at ultra-high dose rate (UHDR: >40 Gy/s), so called FLASH effect. To elucidate the mechanism of FLASH effect, we evaluate changes in radiation chemical yield (G value) of 7-hydroxy-coumarin-3-carboxylic acid (7OH-C3CA), which is formed by the reaction of hydroxyl radicals with coumarin-3-carboxylic acid (C3CA), under carbon ions (140 MeV/u) and protons (27.5 and 55 MeV) in a wide-dose-rate range up to 100 Gy/s. The relative G value, which is the G value at each dose rate normalized by that at the conventional dose (CONV: 0.1 Gy/s >), 140 MeV/u carbon-ion beam is almost equivalent to 27.5 and 55 MeV proton beams. This finding implies that UHDR irradiations using carbon-ion beams have a potential to spare healthy tissues. Furthermore, we evaluate the G value of 7OH-C3CA under the de-oxygenated condition to investigate roles of oxygen to the generation of 7OH-C3CA effect. The G value of 7OH-C3CA under the de-oxygenated condition is lower than that under the oxygenated condition. The G value of 7OH-C3CA under the de-oxygenated condition is higher than those under UHDR irradiations. By direct measurements of the oxygen concentration during 55 MeV proton irradiations, the oxygen concentration drops by 0.1%/Gy, which is independent of the dose rate. When the oxygen concentration directly affects to yields of 7OH-C3CA, the rate of decrease in the oxygen concentration may be correlated with that of decrease in the G value of 7OH-C3CA. However, the reduction rate of G value under UHDR is significantly higher than the oxygen consumption. This finding implied that the influence of the reaction between water radiolysis species formed by neighborhood tracks could be strongly related to the mechanisms of UHDR effect.
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Affiliation(s)
- Tamon Kusumoto
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Taku Inaniwa
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Kota Mizushima
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Shinji Sato
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Satoru Hojo
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Hisashi Kitamura
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Teruaki Konishi
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Satoshi Kodaira
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
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14
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Plante I, Poignant F, Slaba T. Track Structure Components: Characterizing Energy Deposited in Spherical Cells from Direct and Peripheral HZE Ion Hits. Life (Basel) 2021; 11:life11111112. [PMID: 34832988 PMCID: PMC8619431 DOI: 10.3390/life11111112] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/13/2021] [Accepted: 10/15/2021] [Indexed: 12/01/2022] Open
Abstract
To understand the biological effects of radiation, it is important to determine how ionizing radiation deposits energy in micrometric targets. The energy deposited in a target located in an irradiated tissue is a function of several factors such as the radiation type and the irradiated volume size. We simulated the energy deposited by energetic ions in spherical targets of 1, 2, 4, and 8 µm radii encompassed in irradiated parallelepiped volumes of various sizes using the stochastic radiation track structure code Relativistic Ion Tracks (RITRACKS). Because cells are usually part of a tissue when they are irradiated, electrons originating from radiation tracks in neighboring volumes also contribute to energy deposition in the target. To account for this contribution, we used periodic boundary conditions in the simulations. We found that the single-ion spectra of energy deposition in targets comprises two components: the direct ion hits to the targets, which is identical in all irradiation conditions, and the contribution of hits from electrons from neighboring volumes, which depends on the irradiated volume. We also calculated an analytical expression of the indirect hit contributions using the local effect model, which showed results similar to those obtained with RITRACKS.
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Affiliation(s)
| | | | - Tony Slaba
- NASA Langley Research Center, Hampton, VA 23681, USA;
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15
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Zakaria AM, Lertnaisat P, Islam MM, Meesungnoen J, Katsumura Y, Jay-Gerin JP. Yield of the Fricke dosimeter irradiated with the recoil α and Li ions of the 10B( n, α) 7Li nuclear reaction: effects of multiple ionization and temperature. CAN J CHEM 2021. [DOI: 10.1139/cjc-2020-0381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Monte Carlo track chemistry simulations were used to investigate the effects of multiple ionization (MI) of water on the yields (G values) of the ferrous sulfate (Fricke) dosimeter, which was irradiated with low-energy α and lithium ion recoils from the 10B(n,α)7Li nuclear reaction as a function of temperature from 25 to 350 °C. Calculations were performed individually for 1.47 MeV α-particles and 0.84 MeV lithium nuclei with dose-average linear energy transfer (LET) values of ∼196 and 225 keV/µm at 25 °C, respectively. The total yields were obtained by summing the G values for each recoil α and Li ion weighted with its fraction of the total energy absorbed. At room temperature, our G(Fe3+) values calculated under aerated and deaerated conditions only agreed well with the experimental results, provided the MI of water was incorporated in the simulations. This strongly supports the importance of the role of MI of water in the high-LET radiolysis of water. We also simulated the effects of MI of water on G-values for the primary species of the radiolysis of deaerated 0.4 M H2SO4 aqueous solutions by 10B(n,α)7Li recoils. As with the Fricke dosimeter, the best agreement between experiment and simulation was found at 25 °C when the MI of water was included in the simulations. It was also shown that G(Fe3+) decreases slightly as a function of temperature over the range of 25–350 °C. However, at elevated temperatures, no experimental data were available with which to compare our results.
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Affiliation(s)
- Abdullah Muhammad Zakaria
- Département de Médecine Nucléaire et de Radiobiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, 3001, 12ème Avenue Nord, Sherbrooke, QC J1H 5N4, Canada
| | - Phantira Lertnaisat
- Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Muhammad Mainul Islam
- Département de Médecine Nucléaire et de Radiobiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, 3001, 12ème Avenue Nord, Sherbrooke, QC J1H 5N4, Canada
- Baxter Healthcare Corporation, 89 Centre Street South, Alliston, ON L9R 1W7, Canada
| | - Jintana Meesungnoen
- Département de Médecine Nucléaire et de Radiobiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, 3001, 12ème Avenue Nord, Sherbrooke, QC J1H 5N4, Canada
| | - Yosuke Katsumura
- Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Nuclear Professional School, School of Engineering, The University of Tokyo, Shirakata-shirane 2-22, Tokai-mura, Naka-gun, Ibaraki 319-1188, Japan
| | - Jean-Paul Jay-Gerin
- Département de Médecine Nucléaire et de Radiobiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, 3001, 12ème Avenue Nord, Sherbrooke, QC J1H 5N4, Canada
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16
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Dietz TC, Thompson A, Al-Sheikhly M, Sterniczuk M, Bartels DM. H2 production in the 10B(n,α)7Li reaction in water. Radiat Phys Chem Oxf Engl 1993 2021; 180. [DOI: 10.1016/j.radphyschem.2020.109319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Hayashi K, Toyohara M, Kusano Y, Minohara S, Shimono Y, Gotoh H. Behaviour and mechanism of micelle gel dosimeter for carbon-ion-beam irradiation. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2020.109191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Kusumoto T, Kitamura H, Hojo S, Konishi T, Kodaira S. Significant changes in yields of 7-hydroxy-coumarin-3-carboxylic acid produced under FLASH radiotherapy conditions. RSC Adv 2020; 10:38709-38714. [PMID: 35517542 PMCID: PMC9057355 DOI: 10.1039/d0ra07999e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 09/27/2020] [Indexed: 12/15/2022] Open
Abstract
FLASH radiotherapy appears to kill off tumor cells while sparing healthy tissues, by irradiation at ultra high dose rate (>40 Gy s−1). The present study aims to clarify the mechanism of the sparing effect by proton irradiation under the FLASH conditions from a viewpoint of radiation chemistry. To do so, we evaluate radiation chemical yields (G values) of 7-hydroxy-coumarin-3-carboxylic acid (7OH–C3CA), which is produced by water radiolysis using coumarin-3-carboxylic acid (C3CA) solution as a radical scavenger of hydroxyl radicals. We shoot 27.5 MeV protons in the dose rate ranging from 0.05 to 160 Gy s−1. The recombination process of hydroxyl radicals produced is followed by varying the concentration of C3CA from 0.2 to 20 mM, which corresponds to the scavenging time scale from 7.1 to 714 ns. The G value of 7OH–C3CA produced decreases with increasing dose rate on the same scavenging time scale. Additionally, the trend of the relative G value normalized at a scavenging time scale of 100 ns, where radical–radical reaction subsides, is consistent in the examined dose rate range. This finding implies that G values of 7OH–C3CA produced reduce with increasing dose rate due to the oxygen depletion. We experimentally present that the sparing effect for healthy tissues would be seen even with a proton beam under the FLASH conditions due to the depletion of oxygen. Yield of 7-hydroxy-coumarin-3-carboxylic acid (7OH–C3CA) significantly decreases at FLASH condition with the dose rate of >40 Gy s−1, compared to that at conventional condition of 0.05 Gy s−1, due to the oxygen depletion in the solution.![]()
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Affiliation(s)
- Tamon Kusumoto
- National Institutes for Quantum and Radiological Science and Technology 4-9-1 Anagawa, Inage-ku 263-8555 Chiba Japan
| | - Hisashi Kitamura
- National Institutes for Quantum and Radiological Science and Technology 4-9-1 Anagawa, Inage-ku 263-8555 Chiba Japan
| | - Satoru Hojo
- National Institutes for Quantum and Radiological Science and Technology 4-9-1 Anagawa, Inage-ku 263-8555 Chiba Japan
| | - Teruaki Konishi
- National Institutes for Quantum and Radiological Science and Technology 4-9-1 Anagawa, Inage-ku 263-8555 Chiba Japan
| | - Satoshi Kodaira
- National Institutes for Quantum and Radiological Science and Technology 4-9-1 Anagawa, Inage-ku 263-8555 Chiba Japan
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19
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Sife-Eldeen K. ɤ-Radiation-induced N-phenylation of aniline using chlorobenzene: a novel route for diphenylamine formation. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2020. [DOI: 10.1080/16878507.2020.1738032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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20
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de Vera P, Surdutovich E, Solov’yov AV. The role of shock waves on the biodamage induced by ion beam radiation. Cancer Nanotechnol 2019. [DOI: 10.1186/s12645-019-0050-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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21
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Meesungnoen J, Jay-Gerin JP. Radiolysis of supercritical water at 400 °C: density dependence of the rate constant for the reaction of hydronium ions with hydrated electrons. Phys Chem Chem Phys 2019; 21:9141-9144. [PMID: 31033971 DOI: 10.1039/c9cp01190k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The rate constant, k(eaq- + H3O+), for the reaction of hydronium ions with hydrated electrons in supercritical water (SCW) at 400 °C has been evaluated as a function of water density using Monte Carlo track chemistry simulations of the radiolysis of SCW over the range of 0.15-0.6 g cm-3. Results are consistent with recent predictions using the so-called "cage effect" model.
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Affiliation(s)
- Jintana Meesungnoen
- Département de Médecine Nucléaire et de Radiobiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, 3001, 12ème Avenue Nord, Sherbrooke, Québec J1H 5N4, Canada.
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22
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Agaev TN, Garibov AA, Guseinov VI, Melikova SZ, Tagiev MM, Dzhafarova SZ. Kinetics of the Radiation-Catalytic and Catalytic Decomposition of Water on a Surface of Nano-Zirconium. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2019. [DOI: 10.1134/s0036024419010023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Ludwig N, Kusumoto T, Galindo C, Peaupardin P, Pin S, Renault JP, Muller D, Yamauchi T, Kodaira S, Barillon R, Raffy Q. Radiolysis of phenylalanine in solution with Bragg-Peak energy protons. RADIAT MEAS 2018. [DOI: 10.1016/j.radmeas.2018.07.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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24
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O'Leary M, Boscolo D, Breslin N, Brown JMC, Dolbnya IP, Emerson C, Figueira C, Fox OJL, Grimes DR, Ivosev V, Kleppe AK, McCulloch A, Pape I, Polin C, Wardlow N, Currell FJ. Observation of dose-rate dependence in a Fricke dosimeter irradiated at low dose rates with monoenergetic X-rays. Sci Rep 2018; 8:4735. [PMID: 29549265 PMCID: PMC5856745 DOI: 10.1038/s41598-018-21813-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 02/02/2018] [Indexed: 11/09/2022] Open
Abstract
Absolute measurements of the radiolytic yield of Fe3+ in a ferrous sulphate dosimeter formulation (6 mM Fe2+), with a 20 keV x-ray monoenergetic beam, are reported. Dose-rate suppression of the radiolytic yield was observed at dose rates lower than and different in nature to those previously reported with x-rays. We present evidence that this effect is most likely to be due to recombination of free radicals radiolytically produced from water. The method used to make these measurements is also new and it provides radiolytic yields which are directly traceable to the SI standards system. The data presented provides new and exacting tests of radiation chemistry codes.
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Affiliation(s)
- Mel O'Leary
- School of Maths & Physics, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK. .,Centre for Advanced and Interdisciplinary Radiation Research (CAIRR), Queen's University of Belfast, Belfast, BT7 1NN, Northern Ireland, UK.
| | - Daria Boscolo
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany
| | - Nicole Breslin
- School of Maths & Physics, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK.,Centre for Advanced and Interdisciplinary Radiation Research (CAIRR), Queen's University of Belfast, Belfast, BT7 1NN, Northern Ireland, UK
| | - Jeremy M C Brown
- School of Maths & Physics, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK.,Department of Radiation Science and Technology, Delft University of Technology, Delft, 2629 JB, The Netherlands
| | - Igor P Dolbnya
- Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - Chris Emerson
- School of Maths & Physics, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK.,Centre for Advanced and Interdisciplinary Radiation Research (CAIRR), Queen's University of Belfast, Belfast, BT7 1NN, Northern Ireland, UK
| | - Catarina Figueira
- School of Maths & Physics, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK.,Centre for Advanced and Interdisciplinary Radiation Research (CAIRR), Queen's University of Belfast, Belfast, BT7 1NN, Northern Ireland, UK
| | - Oliver J L Fox
- Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - David Robert Grimes
- School of Maths & Physics, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK.,Centre for Advanced and Interdisciplinary Radiation Research (CAIRR), Queen's University of Belfast, Belfast, BT7 1NN, Northern Ireland, UK.,Cancer Research UK/MRC Oxford Institute for Radiation Oncology, Gray Laboratory, University of Oxford, Old Road Campus Research Building, Off Roosevelt Drive, Oxford, OX37DQ, UK
| | - Vladimir Ivosev
- School of Maths & Physics, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK.,Institute of Molecular Sciences (ISMO), UMR 8625, University Paris-Saclay, Université Paris Sud, CNRS, 91405, Orsay Cedex, France
| | - Annette K Kleppe
- Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - Aaron McCulloch
- School of Maths & Physics, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK.,Centre for Advanced and Interdisciplinary Radiation Research (CAIRR), Queen's University of Belfast, Belfast, BT7 1NN, Northern Ireland, UK
| | - Ian Pape
- Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - Chris Polin
- School of Maths & Physics, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK
| | - Nathan Wardlow
- School of Maths & Physics, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK
| | - Fred J Currell
- School of Maths & Physics, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK.,Centre for Advanced and Interdisciplinary Radiation Research (CAIRR), Queen's University of Belfast, Belfast, BT7 1NN, Northern Ireland, UK
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25
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Labouriau A, Robison T, Shonrock C, Simmonds S, Cox B, Pacheco A, Cady C. Boron filled siloxane polymers for radiation shielding. Radiat Phys Chem Oxf Engl 1993 2018. [DOI: 10.1016/j.radphyschem.2017.08.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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26
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Sanguanmith S, Meesungnoen J, Stuart CR, Causey P, Jay-Gerin JP. Self-radiolysis of tritiated water. 4. The scavenging effect of azide ions (N3−) on the molecular hydrogen yield in the radiolysis of water by 60Co γ-rays and tritium β-particles at room temperature. RSC Adv 2018; 8:2449-2458. [PMID: 35541471 PMCID: PMC9077374 DOI: 10.1039/c7ra12397c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 12/22/2017] [Indexed: 11/24/2022] Open
Abstract
The effect of the azide ion N3− on the yield of molecular hydrogen in water irradiated with 60Co γ-rays (∼1 MeV Compton electrons) and tritium β-electrons (mean electron energy of ∼7.8 keV) at 25 °C is investigated using Monte Carlo track chemistry simulations in conjunction with available experimental data. N3− is shown to interfere with the formation of H2 through its high reactivity towards hydrogen atoms and, but to a lesser extent, hydrated electrons, the two major radiolytic precursors of the H2 yield in the diffusing radiation tracks. Chemical changes are observed in the H2 scavengeability depending on the particular type of radiation considered. These changes can readily be explained on the basis of differences in the initial spatial distribution of primary radiolytic species (i.e., the structure of the electron tracks). In the “short-track” geometry of the higher “linear energy transfer” (LET) tritium β-electrons (mean LET ∼5.9 eV nm−1), radicals are formed locally in much higher initial concentration than in the isolated “spurs” of the energetic Compton electrons (LET ∼0.3 eV nm−1) generated by the cobalt-60 γ-rays. As a result, the short-track geometry favors radical–radical reactions involving hydrated electrons and hydrogen atoms, leading to a clear increase in the yield of H2 for tritium β-electrons compared to 60Co γ-rays. These changes in the scavengeability of H2 in passing from tritium β-radiolysis to γ-radiolysis are in good agreement with experimental data, lending strong support to the picture of tritium β-radiolysis mainly driven by the chemical action of short tracks of high local LET. At high N3− concentrations (>1 M), our H2 yield results for 60Co γ-radiolysis are also consistent with previous Monte Carlo simulations that suggested the necessity of including the capture of the precursors to the hydrated electrons (i.e., the short-lived “dry” electrons prior to hydration) by N3−. These processes tend to reduce significantly the yields of H2, as is observed experimentally. However, this dry electron scavenging at high azide concentrations is not seen in the higher-LET 3H β-radiolysis, leading us to conclude that the increased amount of intra-track chemistry intervening at early time under these conditions favors the recombination of these electrons with their parent water cations at the expense of their scavenging by N3−. The effect of the azide ion on the yield of molecular hydrogen in water irradiated with 60Co γ-rays and tritium β-electrons at 25 °C is investigated using Monte Carlo track chemistry simulations.![]()
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Affiliation(s)
- Sunuchakan Sanguanmith
- Département de médecine nucléaire et de radiobiologie
- Faculté de médecine et des sciences de la santé
- Université de Sherbrooke
- Sherbrooke
- Canada
| | - Jintana Meesungnoen
- Département de médecine nucléaire et de radiobiologie
- Faculté de médecine et des sciences de la santé
- Université de Sherbrooke
- Sherbrooke
- Canada
| | - Craig R. Stuart
- Reactor Chemistry and Corrosion Branch
- Canadian Nuclear Laboratories
- Chalk River
- Canada
| | - Patrick Causey
- Radiological Protection Research and Instrumentation Branch
- Canadian Nuclear Laboratories
- Chalk River
- Canada
| | - Jean-Paul Jay-Gerin
- Département de médecine nucléaire et de radiobiologie
- Faculté de médecine et des sciences de la santé
- Université de Sherbrooke
- Sherbrooke
- Canada
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27
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Effect of Oxidative Stress on Cardiovascular System in Response to Gravity. Int J Mol Sci 2017; 18:ijms18071426. [PMID: 28677649 PMCID: PMC5535917 DOI: 10.3390/ijms18071426] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 06/26/2017] [Accepted: 06/27/2017] [Indexed: 02/07/2023] Open
Abstract
Long-term habitation in space leads to physiological alterations such as bone loss, muscle atrophy, and cardiovascular deconditioning. Two predominant factors—namely space radiation and microgravity—have a crucial impact on oxidative stress in living organisms. Oxidative stress is also involved in the aging process, and plays important roles in the development of cardiovascular diseases including hypertension, left ventricular hypertrophy, and myocardial infarction. Here, we discuss the effects of space radiation, microgravity, and a combination of these two factors on oxidative stress. Future research may facilitate safer living in space by reducing the adverse effects of oxidative stress.
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28
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Maeyama T, Fukunishi N, Ishikawa KL, Fukasaku K, Fukuda S. Organic-Gelatin-Free Nanocomposite Fricke Gel Dosimeter. J Phys Chem B 2017; 121:4238-4246. [DOI: 10.1021/acs.jpcb.6b11936] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Takuya Maeyama
- RIKEN Nishina Center for Accelerator-Based Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department
of Chemistry, School of Science, Kitasato University, 1-15-1 Kitasato,
Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
| | - Nobuhisa Fukunishi
- RIKEN Nishina Center for Accelerator-Based Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Kenichi L. Ishikawa
- RIKEN Nishina Center for Accelerator-Based Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department
of Nuclear Engineering and Management, Graduate School
of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kazuaki Fukasaku
- Department
of Neurosurgery, Himon’ya Hospital, 2-9-5 Minami, Meguro-ku, Tokyo 152-0013, Japan
- Advanced Center for Computing and Communication, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Shigekazu Fukuda
- Radiation
Quality Control Section, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
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29
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Runge R, Oehme L, Kotzerke J, Freudenberg R. The effect of dimethyl sulfoxide on the induction of DNA strand breaks in plasmid DNA and colony formation of PC Cl3 mammalian cells by alpha-, beta-, and Auger electron emitters (223)Ra, (188)Re, and (99m)Tc. EJNMMI Res 2016; 6:48. [PMID: 27259575 PMCID: PMC4893047 DOI: 10.1186/s13550-016-0203-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 05/26/2016] [Indexed: 12/23/2022] Open
Abstract
Background DNA damage occurs as a consequence of both direct and indirect effects of ionizing radiation. The severity of DNA damage depends on the physical characteristics of the radiation quality, e.g., the linear energy transfer (LET). There are still contrary findings regarding direct or indirect interactions of high-LET emitters with DNA. Our aim is to determine DNA damage and the effect on cellular survival induced by 223Ra compared to 188Re and 99mTc modulated by the radical scavenger dimethyl sulfoxide (DMSO). Methods Radioactive solutions of 223Ra, 188Re, or 99mTc were added to either plasmid DNA or to PC Cl3 cells in the absence or presence of DMSO. Following irradiation, single strand breaks (SSB) and double strand breaks (DSB) in plasmid DNA were analyzed by gel electrophoresis. To determine the radiosensitivity of the rat thyroid cell line (PC Cl3), survival curves were performed using the colony formation assay. Results Exposure to 120 Gy of 223Ra, 188Re, or 99mTc leads to maximal yields of SSB (80 %) in plasmid DNA. Irradiation with 540 Gy 223Ra and 500 Gy 188Re or 99mTc induced 40, 28, and 64 % linear plasmid conformations, respectively. DMSO prevented the SSB and DSB in a similar way for all radionuclides. However, with the α-emitter 223Ra, a low level of DSB could not be prevented by DMSO. Irradiation of PC Cl3 cells with 223Ra, 188Re, and 99mTc pre-incubated with DMSO revealed enhanced survival fractions (SF) in comparison to treatment without DMSO. Protection factors (PF) were calculated using the fitted survival curves. These factors are 1.23 ± 0.04, 1.20 ± 0.19, and 1.34 ± 0.05 for 223Ra, 188Re, and 99mTc, respectively. Conclusions For 223Ra, as well as for 188Re and 99mTc, dose-dependent radiation effects were found applicable for plasmid DNA and PC Cl3 cells. The radioprotection by DMSO was in the same range for high- and low-LET emitter. Overall, the results indicate the contribution of mainly indirect radiation effects for each of the radionuclides regarding DNA damage and cell survival. In summary, our findings may contribute to fundamental knowledge about the α-particle induced DNA damage. Electronic supplementary material The online version of this article (doi:10.1186/s13550-016-0203-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Roswitha Runge
- Department of Nuclear Medicine, University Hospital/Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse 74, D-01307, Dresden, Germany.
| | - Liane Oehme
- Department of Nuclear Medicine, University Hospital/Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse 74, D-01307, Dresden, Germany
| | - Jörg Kotzerke
- Department of Nuclear Medicine, University Hospital/Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse 74, D-01307, Dresden, Germany
| | - Robert Freudenberg
- Department of Nuclear Medicine, University Hospital/Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse 74, D-01307, Dresden, Germany
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Sanguanmith S, Meesungnoen J, Guzonas DA, Stuart CR, Jay-Gerin JP. Radiolysis of Supercritical Water at 400°C: A Sensitivity Study of the Density Dependence of the Yield of Hydrated Electrons on the (eaq−+eaq−) Reaction Rate Constant. JOURNAL OF NUCLEAR ENGINEERING AND RADIATION SCIENCE 2016. [DOI: 10.1115/1.4031013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The temperature dependence of the rate constant (k) of the bimolecular reaction of two hydrated electrons (eaq−) measured in alkaline water exhibits an abrupt drop between 150°C and 200°C; above 250°C, it is too small to be measured reliably. Although this result is well established, the applicability of this sudden drop in k(eaq−+eaq−)) above ∼150°C to neutral or slightly acidic solution, as recommended by some authors, still remains uncertain. In fact, the recent work suggested that in near-neutral water the abrupt change in k above ∼150°C does not occur and that k should increase, rather than decrease, at temperatures greater than 150°C with roughly the same Arrhenius dependence of the data below 150°C. In view of this uncertainty of k, Monte Carlo simulations were used in this study to examine the sensitivity of the density dependence of the yield of eaq− in the low–linear energy transfer (LET) radiolysis of supercritical water (H2O) at 400°C on variations in the temperature dependence of k. Two different values of the eaq− self-reaction rate constant at 400°C were used: one was based on the temperature dependence of k above 150°C as measured in alkaline water (4.2×108 M−1 s−1), and the other was based on an Arrhenius extrapolation of the values below 150°C (2.5×1011 M−1 s−1). In both cases, the density dependences of our calculated eaq− yields at ∼60 ps and 1 ns were found to compare fairly well with the available picosecond pulse radiolysis experimental data (for D2O) for the entire water density range studied (∼0.15–0.6 g/cm3). Only a small effect of k on the variation of G(eaq−)) as a function of density at 60 ps and 1 ns could be observed. In conclusion, our present calculations did not allow us to unambiguously confirm (or deny) the applicability of the predicted sudden drop of k(eaq−+eaq−) at ∼150°C in near-neutral water.
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Affiliation(s)
- Sunuchakan Sanguanmith
- Department of Nuclear Medicine and Radiobiology, Université de Sherbrooke, 3001, 12e Avenue Nord, Sherbrooke, QC J1H 5N4, Canada e-mail:
| | - Jintana Meesungnoen
- Department of Nuclear Medicine and Radiobiology, Université de Sherbrooke, 3001, 12e Avenue Nord, Sherbrooke, QC J1H 5N4, Canada e-mail:
| | - David A. Guzonas
- Canadian Nuclear Laboratories, Reactor Chemistry and Corrosion, 20 Forest Avenue, Deep River, ON K0J 1P0, Canada e-mail:
| | - Craig R. Stuart
- Canadian Nuclear Laboratories, Reactor Chemistry and Corrosion, 20 Forest Avenue, Deep River, ON K0J 1P0, Canada e-mail:
| | - Jean-Paul Jay-Gerin
- Department of Nuclear Medicine and Radiobiology, Université de Sherbrooke, 3001, 12e Avenue Nord, Sherbrooke, QC J1H 5N4, Canada e-mail:
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Liang Y, Yang G, Liu F, Wang Y. Monte Carlo simulation of ionizing radiation induced DNA strand breaks utilizing coarse grained high-order chromatin structures. Phys Med Biol 2015; 61:445-60. [DOI: 10.1088/0031-9155/61/1/445] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Nakagawa K, Karakirova Y, Yordanov ND. Heavy-ion-induced sucrose radicals investigated using EPR and UV spectroscopy. JOURNAL OF RADIATION RESEARCH 2015; 56:405-412. [PMID: 25480828 PMCID: PMC4426910 DOI: 10.1093/jrr/rru108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 10/07/2014] [Accepted: 10/18/2014] [Indexed: 06/04/2023]
Abstract
The potential use of a sucrose dosimeter for estimating both linear energy transfer (LET) and the absorbed dose of heavy ion and X-ray radiation was investigated. The stable free radicals were produced when sucrose was irradiated with heavy ions, such as helium, carbon, silicon and neon ions, and when the X-ray radiation was similar to the obtained electron paramagnetic resonance (EPR) spectra, which were ∼7 mT wide and composed of several hyperfine structures. In addition, the total spin concentration resulting from heavy-ion irradiation increased linearly as the absorbed dose increased, and decreased logarithmically as the LET increased. These empirical relations imply that the LET at a certain dose can be determined from the spin concentration. For sucrose and alanine, both cross-sections following C-ion irradiation with a 50 Gy dose were ∼1.3 × 10(-12) [μm(2)], taking into account the molecular size of the samples. The values of these cross-sections imply that multiple ionizing particles were involved in the production of stable radicals. Furthermore, UV absorbance at 267 nm of an aqueous solution of irradiated sucrose was found to linearly increase with increasing absorbed dose. Therefore, the EPR and UV results suggest that sucrose can be a useful dosimeter for heavy-ion irradiation.
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Affiliation(s)
- Kouichi Nakagawa
- Department of Radiological Life Sciences, Graduate School of Health Sciences, Hirosaki University, 66-1 Hon-cho, Hirosaki, 036-8564, Japan
| | - Yordanka Karakirova
- National EPR Center, Institute of Catalysis, Bulgaria Academy of Sciences, Sofia, Bulgaria
| | - Nicola D Yordanov
- National EPR Center, Institute of Catalysis, Bulgaria Academy of Sciences, Sofia, Bulgaria
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Sridharan DM, Asaithamby A, Bailey SM, Costes SV, Doetsch PW, Dynan WS, Kronenberg A, Rithidech KN, Saha J, Snijders AM, Werner E, Wiese C, Cucinotta FA, Pluth JM. Understanding cancer development processes after HZE-particle exposure: roles of ROS, DNA damage repair and inflammation. Radiat Res 2015; 183:1-26. [PMID: 25564719 DOI: 10.1667/rr13804.1] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
During space travel astronauts are exposed to a variety of radiations, including galactic cosmic rays composed of high-energy protons and high-energy charged (HZE) nuclei, and solar particle events containing low- to medium-energy protons. Risks from these exposures include carcinogenesis, central nervous system damage and degenerative tissue effects. Currently, career radiation limits are based on estimates of fatal cancer risks calculated using a model that incorporates human epidemiological data from exposed populations, estimates of relative biological effectiveness and dose-response data from relevant mammalian experimental models. A major goal of space radiation risk assessment is to link mechanistic data from biological studies at NASA Space Radiation Laboratory and other particle accelerators with risk models. Early phenotypes of HZE exposure, such as the induction of reactive oxygen species, DNA damage signaling and inflammation, are sensitive to HZE damage complexity. This review summarizes our current understanding of critical areas within the DNA damage and oxidative stress arena and provides insight into their mechanistic interdependence and their usefulness in accurately modeling cancer and other risks in astronauts exposed to space radiation. Our ultimate goals are to examine potential links and crosstalk between early response modules activated by charged particle exposure, to identify critical areas that require further research and to use these data to reduced uncertainties in modeling cancer risk for astronauts. A clearer understanding of the links between early mechanistic aspects of high-LET response and later surrogate cancer end points could reveal key nodes that can be therapeutically targeted to mitigate the health effects from charged particle exposures.
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Affiliation(s)
- D M Sridharan
- a Lawrence Berkeley National Laboratory, Berkeley, California
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Meesungnoen J, Sanguanmith S, Jay-Gerin JP. Yields of H2 and hydrated electrons in low-LET radiolysis of water determined by Monte Carlo track chemistry simulations using phenol/N2O aqueous solutions up to 350 °C. RSC Adv 2015. [DOI: 10.1039/c5ra15801j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
The effect of temperature on the yields of H2 and hydrated electrons in the low linear energy transfer radiolysis of water has been modeled by Monte Carlo track chemistry simulations using phenol/N2O aqueous solutions from 25 up to 350 °C.
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Affiliation(s)
- Jintana Meesungnoen
- Département de Médecine Nucléaire et Radiobiologie
- Faculté de Médecine et des Sciences de la Santé
- Université de Sherbrooke
- Sherbrooke
- Canada
| | - Sunuchakan Sanguanmith
- Département de Médecine Nucléaire et Radiobiologie
- Faculté de Médecine et des Sciences de la Santé
- Université de Sherbrooke
- Sherbrooke
- Canada
| | - Jean-Paul Jay-Gerin
- Département de Médecine Nucléaire et Radiobiologie
- Faculté de Médecine et des Sciences de la Santé
- Université de Sherbrooke
- Sherbrooke
- Canada
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35
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Kanike V, Meesungnoen J, Jay-Gerin JP. Acid spike effect in spurs/tracks of the low/high linear energy transfer radiolysis of water: potential implications for radiobiology. RSC Adv 2015. [DOI: 10.1039/c5ra07173a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Monte Carlo track chemistry simulations have been used to calculate the yields of hydronium ions that are formed within spurs/tracks of the low/high linear energy transfer radiolysis of pure, deaerated water during and shortly after irradiation.
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Affiliation(s)
- Vanaja Kanike
- Département de Médecine Nucléaire et Radiobiologie
- Faculté de Médecine et des Sciences de la Santé
- Université de Sherbrooke
- Sherbrooke
- Canada
| | - Jintana Meesungnoen
- Département de Médecine Nucléaire et Radiobiologie
- Faculté de Médecine et des Sciences de la Santé
- Université de Sherbrooke
- Sherbrooke
- Canada
| | - Jean-Paul Jay-Gerin
- Département de Médecine Nucléaire et Radiobiologie
- Faculté de Médecine et des Sciences de la Santé
- Université de Sherbrooke
- Sherbrooke
- Canada
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Butarbutar SL, Meesungnoen J, Guzonas DA, Stuart CR, Jay-Gerin JP. Modeling the Radiolysis of Supercritical Water by Fast Neutrons: Density Dependence of the Yields of Primary Species at 400°C. Radiat Res 2014; 182:695-704. [DOI: 10.1667/rr13715.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Balcerzyk A, Boughattas I, Pin S, Balanzat E, Baldacchino G. First observation of HO˙ reactivity in water under high energy ions at elevated temperature. Phys Chem Chem Phys 2014; 16:23975-84. [PMID: 25286140 DOI: 10.1039/c4cp03049d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
This communication reports the first observation of the formation of HO˙ produced under two different High energy ion beams, (18)O(8+) and (36)Ar(18+) having Linear Energy Transfers (LET) of 65 and 350 eV nm(-1) respectively, at temperatures up to 411 K. Both scavenging with various concentrations of SCN(-) and heavy-ion pulse radiolysis methods are used with an original temperature and pressure regulated optical cell. Deconvolution of kinetics is used to analyze the evolution of HO˙ track segment yields as a function of time and temperature. It takes care of involving the ionic strength effect and Arrhenius expression in the rate constants correction. The results show a fast decay of HO˙ yields in the 10(-10)-10(-8) s range which denotes an efficient reactivity of this species in the track structure of the ion beam. This effect is enhanced with the lowest LET of O(8+). Increasing the temperature also accelerates the decays for both ions. These observations are discussed in terms of temperature activation of reactions and the track structure exhibiting the formation of HO˙ in a "low LET" penumbra around the ionization tracks. HO˙ track segment yields at 100 ns, of 0.4 × 10(-7) and 0.6 × 10(-7) mol J(-1), respectively for 350 and 65 eV nm(-1), are not affected by temperature.
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Affiliation(s)
- A Balcerzyk
- CEA Saclay, IRAMIS, SIS2M, LRad, Bât 546, PC 175, F-91191 Gif-sur-Yvette Cedex, France.
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Rabus H, Palmans H, Hilgers G, Sharpe P, Pinto M, Villagrasa C, Nettelbeck H, Moro D, Pola A, Pszona S, Teles P. Biologically Weighted Quantities in Radiotherapy: an EMRP Joint Research Project. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20147700021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Li M, Gonon G, Buonanno M, Autsavapromporn N, de Toledo SM, Pain D, Azzam EI. Health risks of space exploration: targeted and nontargeted oxidative injury by high-charge and high-energy particles. Antioxid Redox Signal 2014; 20:1501-23. [PMID: 24111926 PMCID: PMC3936510 DOI: 10.1089/ars.2013.5649] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
SIGNIFICANCE During deep space travel, astronauts are often exposed to high atomic number (Z) and high-energy (E) (high charge and high energy [HZE]) particles. On interaction with cells, these particles cause severe oxidative injury and result in unique biological responses. When cell populations are exposed to low fluences of HZE particles, a significant fraction of the cells are not traversed by a primary radiation track, and yet, oxidative stress induced in the targeted cells may spread to nearby bystander cells. The long-term effects are more complex because the oxidative effects persist in progeny of the targeted and affected bystander cells, which promote genomic instability and may increase the risk of age-related cancer and degenerative diseases. RECENT ADVANCES Greater understanding of the spatial and temporal features of reactive oxygen species bursts along the tracks of HZE particles, and the availability of facilities that can simulate exposure to space radiations have supported the characterization of oxidative stress from targeted and nontargeted effects. CRITICAL ISSUES The significance of secondary radiations generated from the interaction of the primary HZE particles with biological material and the mitigating effects of antioxidants on various cellular injuries are central to understanding nontargeted effects and alleviating tissue injury. FUTURE DIRECTIONS Elucidation of the mechanisms underlying the cellular responses to HZE particles, particularly under reduced gravity and situations of exposure to additional radiations, such as protons, should be useful in reducing the uncertainty associated with current models for predicting long-term health risks of space radiation. These studies are also relevant to hadron therapy of cancer.
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Affiliation(s)
- Min Li
- 1 Department of Radiology, Cancer Center, Rutgers University-New Jersey Medical School , Newark, New Jersey
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40
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A diffusion-free and linear-energy-transfer-independent nanocomposite Fricke gel dosimeter. Radiat Phys Chem Oxf Engl 1993 2014. [DOI: 10.1016/j.radphyschem.2013.09.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Zhang Y, Martin SG. Redox proteins and radiotherapy. Clin Oncol (R Coll Radiol) 2014; 26:289-300. [PMID: 24581945 DOI: 10.1016/j.clon.2014.02.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 01/28/2014] [Accepted: 02/07/2014] [Indexed: 01/05/2023]
Abstract
Although conventional radiotherapy can directly damage DNA and other organic molecules within cells, most of the damage and the cytotoxicity of such ionising radiation, comes from the production of ions and free radicals produced via interactions with water. This 'indirect effect', a form of oxidative stress, can be modulated by a variety of systems within cells that are in place to, in normal situations, maintain homeostasis and redox balance. If cancer cells express high levels of antioxidant redox proteins, they may be more resistant to radiation and so targeting such systems may be a profitable strategy to increase therapeutic efficacy of conventional radiotherapy. An overview, with exemplars, of the main systems regulating redox homeostasis is supplied and discussed in relation to their use as prognostic and predictive biomarkers, and how targeting such proteins and systems may increase radiosensitivity and, potentially, improve the radiotherapeutic response.
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Affiliation(s)
- Y Zhang
- Academic Unit of Clinical Oncology, University of Nottingham, School of Medicine, Nottingham University Hospitals NHS Trust, City Hospital Campus, Nottingham, UK
| | - S G Martin
- Academic Unit of Clinical Oncology, University of Nottingham, School of Medicine, Nottingham University Hospitals NHS Trust, City Hospital Campus, Nottingham, UK.
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Sanguanmith S, Meesungnoen J, Jay-Gerin JP. Time-dependent yield of OH radicals in the low linear energy transfer radiolysis of water between 25 and 350 °C. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.09.057] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Scifoni E, Tinganelli W, Weyrather WK, Durante M, Maier A, Krämer M. Including oxygen enhancement ratio in ion beam treatment planning: model implementation and experimental verification. Phys Med Biol 2013; 58:3871-95. [PMID: 23681217 DOI: 10.1088/0031-9155/58/11/3871] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We present a method for adapting a biologically optimized treatment planning for particle beams to a spatially inhomogeneous tumor sensitivity due to hypoxia, and detected e.g., by PET functional imaging. The TRiP98 code, established treatment planning system for particles, has been extended for including explicitly the oxygen enhancement ratio (OER) in the biological effect calculation, providing the first set up of a dedicated ion beam treatment planning approach directed to hypoxic tumors, TRiP-OER, here reported together with experimental tests. A simple semi-empirical model for calculating the OER as a function of oxygen concentration and dose averaged linear energy transfer, generating input tables for the program is introduced. The code is then extended in order to import such tables coming from the present or alternative models, accordingly and to perform forward and inverse planning, i.e., predicting the survival response of differently oxygenated areas as well as optimizing the required dose for restoring a uniform survival effect in the whole irradiated target. The multiple field optimization results show how the program selects the best beam components for treating the hypoxic regions. The calculations performed for different ions, provide indications for the possible clinical advantages of a multi-ion treatment. Finally the predictivity of the code is tested through dedicated cell culture experiments on extended targets irradiation using specially designed hypoxic chambers, providing a qualitative agreement, despite some limits in full survival calculations arising from the RBE assessment. The comparison of the predictions resulting by using different model tables are also reported.
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Affiliation(s)
- E Scifoni
- Biophysics Department, GSI Helmoltzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany.
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Baragiola RA, Famá MA, Loeffler MJ, Palumbo ME, Raut U, Shi J, Strazzulla G. Radiation Effects in Water Ice in the Outer Solar System. THE SCIENCE OF SOLAR SYSTEM ICES 2013. [DOI: 10.1007/978-1-4614-3076-6_16] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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45
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Kohan LM, Sanguanmith S, Meesungnoen J, Causey P, Stuart CR, Jay-Gerin JP. Self-radiolysis of tritiated water. 1. A comparison of the effects of 60Co γ-rays and tritium β-particles on water and aqueous solutions at room temperature. RSC Adv 2013. [DOI: 10.1039/c3ra42984a] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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Alizadeh E, Sanche L. Precursors of solvated electrons in radiobiological physics and chemistry. Chem Rev 2012; 112:5578-602. [PMID: 22724633 DOI: 10.1021/cr300063r] [Citation(s) in RCA: 225] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Elahe Alizadeh
- Groupe en Sciences des Radiations, Département de Médecine Nucléaire et Radiobiologie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada
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Yamashita S, Baldacchino G, Maeyama T, Taguchi M, Muroya Y, Lin M, Kimura A, Murakami T, Katsumura Y. Mechanism of radiation-induced reactions in aqueous solution of coumarin-3-carboxylic acid: Effects of concentration, gas and additive on fluorescent product yield. Free Radic Res 2012; 46:861-71. [DOI: 10.3109/10715762.2012.684879] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Keszenman DJ, Sutherland BM. Yields of Clustered DNA Damage Induced by Charged-Particle Radiations of Similar Kinetic Energy per Nucleon: LET Dependence in Different DNA Microenvironments. Radiat Res 2010; 174:238-50. [DOI: 10.1667/rr2093.1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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50
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Toburen LH, McLawhorn SL, McLawhorn RA, Carnes KD, Dingfelder M, Shinpaugh JL. Electron emission from amorphous solid water induced by passage of energetic protons and fluorine ions. Radiat Res 2010; 174:107-18. [PMID: 20681805 PMCID: PMC3835720 DOI: 10.1667/rr1984a.1] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Absolute doubly differential electron emission yields were measured from thin films of amorphous solid water (ASW) after the transmission of 6 MeV protons and 19 MeV (1 MeV/nucleon) fluorine ions. The ASW films were frozen on thin (1-microm) copper foils cooled to approximately 50 K. Electrons emitted from the films were detected as a function of angle in both the forward and backward direction and as a function of the film thickness. Electron energies were determined by measuring the ejected electron time of flight, a technique that optimizes the accuracy of measuring low-energy electron yields, where the effects of molecular environment on electron transport are expected to be most evident. Relative electron emission yields were normalized to an absolute scale by comparison of the integrated total yields for proton-induced electron emission from the copper substrate to values published previously. The absolute doubly differential yields from ASW are presented along with integrated values, providing single differential and total electron emission yields. These data may provide benchmark tests of Monte Carlo track structure codes commonly used for assessing the effects of radiation quality on biological effectiveness.
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Affiliation(s)
- L H Toburen
- Department of Physics, East Carolina University, Greenville, North Carolina 27858, USA.
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