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Ueno M, Shibata S, Nakanishi I, Aoki I, Yamada KI, Matsumoto KI. Effects of selenium deficiency on biological results of X-ray and carbon-ion beam irradiation in mice. J Clin Biochem Nutr 2023; 72:107-116. [PMID: 36936873 PMCID: PMC10017320 DOI: 10.3164/jcbn.22-57] [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: 05/24/2022] [Accepted: 09/16/2022] [Indexed: 12/13/2022] Open
Abstract
The impact of radiation-induced hydrogen peroxide (H2O2) on the biological effects of X-rays and carbon-ion beams was investigated using a selenium-deficient (SeD) mouse model. Selenium is the active center of glutathione peroxidase (GSH-Px), and SeD mice lack the ability to degrade H2O2. Male and female SeD mice were prepared by feeding a torula yeast-based SeD diet and ultrapure water. Thirty-day survival rates after whole-body irradiation, radiation-induced leg contracture, and MRI-based redox imaging of the brain were assessed and compared between SeD and normal mice. Thirty-day lethality after whole-body 5.6 Gy irradiation with X-rays or carbon-ion beams was higher in the SeD mice than in the normal mice, while SeD did not give the notable difference between X-rays and carbon-ion beams. SeD also did not affect the maximum leg contracture level after irradiation with carbon-ion beams, but delayed the leg contraction rate. In addition, no marked effects of SeD were observed on variations in the redox status of the brain after irradiation. Collectively, the present results indicate that SeD slightly altered the biological effects of X-rays and/or carbon-ion beams. GSH-Px processes endogenous H2O2 generated through mitochondrial respiration, but does not have the capacity to degrade H2O2 produced by irradiation.
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Affiliation(s)
- Megumi Ueno
- Quantitative RedOx Sensing Group, Department of Radiation Regulatory Science Research, National Institute of Radiological Sciences, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Sayaka Shibata
- Applied MRI Research Group, Department of Molecular Imaging and Theranostics, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Ikuo Nakanishi
- Quantum RedOx Chemistry Team, Institute for Quantum Life Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Ichio Aoki
- Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Ken-ichi Yamada
- Physical Chemistry for Life Science Laboratory, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Ken-ichiro Matsumoto
- Quantitative RedOx Sensing Group, Department of Radiation Regulatory Science Research, National Institute of Radiological Sciences, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
- To whom correspondence should be addressed. E-mail:
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Ando K, Yoshida Y, Hirayama R, Koike S, Matsufuji N. Dose- and LET-dependent changes in mouse skin contracture up to a year after either single dose or fractionated doses of carbon ion or gamma rays. JOURNAL OF RADIATION RESEARCH 2022; 63:221-229. [PMID: 35021226 PMCID: PMC8944303 DOI: 10.1093/jrr/rrab123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 10/18/2021] [Indexed: 06/14/2023]
Abstract
Time dependence of relative biological effectiveness (RBE) of carbon ions for skin damage was investigated to answer the question of whether the flat distribution of biological doses within a Spread-Out Bragg peak (SOBP) which is designed based on in vitro cell kill could also be flat for in vivo late responding tissue. Two spots of Indian ink intracutaneously injected into the legs of C3H mice were measured by calipers. An equieffective dose to produce 30% skin contraction was calculated from a dose-response curve and used to calculate the RBE of carbon ion beams. We discovered skin contraction progressed after irradiation and then reached a stable/slow progression phase. Equieffective doses decreased with time and the decrease was most prominent for gamma rays and least prominent for 100 keV/μm carbon ions. Survival parameter of alpha but not beta in the linear-quadratic model is closely related to the RBE of carbon ions. Biological doses within the SOBP increased with time but their distribution was still flat up to 1 year after irradiation. The outcomes of skin contraction studies suggest that (i) despite the higher RBE for skin contracture after carbon ions compared to gamma rays, gamma rays can result in a more severe late effect of skin contracture. This is due to the carbon effect saturating at a lower dose than gamma rays, and (ii) the biological dose distribution throughout the SOBP remains approximately the same even one year after exposure.
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Affiliation(s)
- Koichi Ando
- Corresponding author. Gunma University Heavy Ion Medical Center, Showa-machi 3-39-22, Maebashi0shi, Gunma, Japan 371-8511, Email address:
| | - Yukari Yoshida
- Gunma University Heavy Ion Medical Center, Showa-machi 3-39-22, Maebashi-shi, Gunma, Japan 371-8511
| | - Ryoichi Hirayama
- Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, Anagawa 4-9-1, Chiba, Japan 263-8555
| | - Sachiko Koike
- Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, Anagawa 4-9-1, Chiba, Japan 263-8555
| | - Naruhiro Matsufuji
- Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, Anagawa 4-9-1, Chiba, Japan 263-8555
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Ueno M, Nakanishi I, Matsumoto KI. A New Approach for Quantifying Radio-Biological Effects Using the Time Course of Mouse Leg Contracture. Biol Pharm Bull 2018; 41:368-373. [PMID: 29491213 DOI: 10.1248/bpb.b17-00689] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A digitization approach to the time course of radiation-induced mouse leg contracture was proposed for quantifying the radiation effect on an individual living mouse. The shortening of the mouse leg length can be easily measured with a caliper/ruler to offer a very simple digitalized index of the radiation effect. Left hind legs of mice were irradiated with single dose of 32 Gy of 290 MeV carbon-ion beam using 0, 50, or 117 mm binary filter (BF). The right legs were used as a control. The lengths of both hind legs of the mice were measured using a digital caliper before irradiation and every week after irradiation. The degree of leg contracture, ΔSt, at the time point t was estimated by subtraction of the left irradiated leg length from the right control leg length. Equation was fitted on the daily time course of ΔSt, and two parameters, ΔSmax and Ts, were estimated. ΔSt=ΔSmax×(1-exp(t/Ts)), where ΔSmax is the maximum degree of leg contracture, and Ts is time of leg contracture. The effect of carbon-ion irradiation on a living mouse was quantified by ΔSmax and Ts of the leg contracture, and then compared to that of X-rays. By 32 Gy irradiation, ΔSmax was largest for the BF117 experiment, followed by X-ray~BF50>BF0. Ts was shortest for the BF50 experiment, while other irradiation conditions give similar Ts. A logarithmic function was successfully repurposed for the evaluation of radio-biological response.
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Affiliation(s)
- Megumi Ueno
- Quantitative RedOx Sensing Team, Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology
| | - Ikuo Nakanishi
- Quantitative RedOx Sensing Team, Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology
| | - Ken-Ichiro Matsumoto
- Quantitative RedOx Sensing Team, Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology
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Montay-Gruel P, Meziani L, Yakkala C, Vozenin MC. Expanding the therapeutic index of radiation therapy by normal tissue protection. Br J Radiol 2018; 92:20180008. [PMID: 29694234 DOI: 10.1259/bjr.20180008] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Normal tissue damages induced by radiation therapy remain dose-limiting factors in radiation oncology and this is still true despite recent advances in treatment planning and delivery of image-guided radiation therapy. Additionally, as the number of long-term cancer survivors increases, unacceptable complications emerge and dramatically reduce the patients' quality of life. This means that patients and clinicians expect discovery of new options for the therapeutic management of radiation-induced complications. Over the past four decades, research has enhanced our understanding of the pathophysiological, cellular and molecular processes governing normal tissue toxicity. Those processes are complex and involve the cross-talk between the various cells of a tissue, including fibroblasts, endothelial, immune and epithelial cells as well as soluble paracrine factors including growth factors and proteases. We will review the translatable pharmacological approaches that have been developed to prevent, mitigate, or reverse radiation injuries based upon the targeting of cellular and signalling pathways. We will summarize the different steps of the research strategy, from the definition of initial biological hypotheses to preclinical studies and clinical translation. We will also see how novel research and therapeutic hypotheses emerge along the way as well as briefly highlight innovative approaches based upon novel radiotherapy delivery procedures.
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Affiliation(s)
- Pierre Montay-Gruel
- Laboratoire de Radio-Oncologie, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
| | - Lydia Meziani
- INSERM, U1030, F-94805, Villejuif, Paris, France.,Université Paris Sud, Université Paris Saclay, Faculté de médecine du Kremlin-Bicêtre, Labex LERMIT, DHU TORINO, Paris, France
| | - Chakradhar Yakkala
- Laboratoire de Radio-Oncologie, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
| | - Marie-Catherine Vozenin
- Laboratoire de Radio-Oncologie, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
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Ando K, Koike S, Ohmachi Y, Ando Y, Kobashi G. Tumor induction in mice after local irradiation with single doses of either carbon-ion beams or gamma rays. Int J Radiat Biol 2014; 90:1119-24. [PMID: 24923475 DOI: 10.3109/09553002.2014.932030] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE To determine the dose-dependent relative biological effectiveness (RBE) for tumor prevalence in mice receiving single localized doses to their right leg of either carbon ions (15, 45 or 75 keV/μm) or 137Cs gamma rays. METHODS AND MATERIALS A total of 1647 female C3H mice were irradiated to their hind legs with a localized dose of either reference gamma rays or 15, 45 or 75 keV/μm carbon-ion beams. Irradiated mice were evaluated for tumors twice a month during their three-year life span, and the dimensions of any tumors found were measured with a caliper. The tumor induction frequency was calculated by Kaplan-Meier analysis. RESULTS The incidence of tumors from 50 Gy of 45 keV/μm carbon ions was marginally higher than those from 50 Gy of gamma rays. However, 60 Gy of 15 keV/μm carbon ions induced significantly fewer tumors than did gamma rays. RBE values of 0.87 + 0.12, 1.29 + 0.08 or 2.06 + 0.39 for lifetime tumorigenesis were calculated for 15, 45 or 75 keV/μm carbon-ion beams, respectively. Fibrosarcoma predominated, with no Linear Energy Transfer (LET)-dependent differences in the tumor histology. Experiments measuring the late effect of leg skin shrinkage suggested that the carcinogenic damage of 15 keV/μm carbon ions would be less than that of gamma rays. CONCLUSIONS We conclude that patients receiving radiation doses to their normal tissues would face less risk of secondary tumor induction by carbon ions of intermediate LET values compared to equivalent doses of photons.
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Affiliation(s)
- Koichi Ando
- Heavy Ion Medical Center, Gunma University , Maebashi-shi
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Landauer MR, Castro CA, Benson KA, Hogan JB, Weiss JF. Radioprotective and locomotor responses of mice treated with nimodipine alone and in combination with WR-151327. J Appl Toxicol 2001; 21:25-31. [PMID: 11180277 DOI: 10.1002/jat.728] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The effect of combining a radiation-protective phosphorothioate with another agent was investigated in an attempt to increase radioprotection and reduce toxicity. The calcium channel blocker nimodipine (NIMO) was administered alone (1 or 10 mg kg-1) or in combination with 200 mg kg-1 of the phosphorothioate radioprotector WR-151327 (WR) (S-3-(3-methylaminopropylamino)propylphosphorothioic acid). Radioprotection as measured (30-day survival) of mice treated i.p. 30 min before (60)Co irradiation at a dose rate of 1 Gy min-1 was evaluated in CD2F1 male mice. The effects of nimodipine and WR-151327 on locomotor activity were investigated also in a separate group of non-irradiated mice. The LD(50/30) for the Emulphor vehicle control group was 8.56. For nimodipine alone (1 or 10 mg kg-1) the LD(50/30)was 8.39 and 10.21 Gy, respectively, yielding dose modification factors (DMFs) of 0.98 and 1.19, respectively. When WR-151327 was given alone, the <LD(50/30) was 12.48 Gy (DMF = 1.46; P < 0.05 from vehicle). WR-151327 combined with 1 or 10 mg kg-1 nimodipine resulted in an LD(50/30) of 12.73 Gy (DMF 1.49, P < 0.05 from vehicle), and when WR-151327 was combined with 10 mg kg-1 nimodipine the LD(50/30) was 14.29 Gy (DMF = 1.67, P < 0.001 from WR-151327). For either dose of nimodipine, locomotor activity did not differ from vehicle. WR-151327 and WR-151327 + 1 mg kg-1 nimodipine resulted in locomotor decrements for up to 4 h post-administration (P < 0.05 from vehicle), and WR-151327 + 10 mg kg-1 nimodipine for up to 6 h (P < 0.05 from WR-151327). Therefore, although there was an additive radioprotective effect when the higher dose of nimodipine was combined with WR-151327, the locomotor decrement was also enhanced. These results demonstrate that a combination of nimodipine and a phosphorothioate such as WR-151327 may be useful as a clinical setting where behavioral and physiological side-effects can be monitored. Published in 2001 by John Wiley & Sons, Ltd.
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Affiliation(s)
- M R Landauer
- Armed Forces Radiobiology Research Institute, Radiation Casualty Management Team, 8901 Wisconsin Avenue, Bethesda, MD 20889-5603, USA.
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Affiliation(s)
- J S Welsh
- Division of Radiation, Johns Hopkins Oncology Center, Baltimore, MD, USA.
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