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Folly CL, Mazzei-Abba A, Coste A, Kreis C, Spycher BD. Measurements and determinants of children's exposure to background gamma radiation in Switzerland. J Radiat Res 2022; 63:354-363. [PMID: 35349709 PMCID: PMC9124624 DOI: 10.1093/jrr/rrac006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/26/2021] [Indexed: 06/14/2023]
Abstract
Epidemiological studies of children's cancer risks associated with background gamma radiation exposure have used geographic exposure models to estimate exposure at their locations of residence. We measured personal exposure to background gamma radiation, and we investigated the extent to which it was associated with children's whereabouts. We collected data on whereabouts and exposure to background gamma radiation over a 5-day period among children aged 4-15 years in Switzerland. We used D-Shuttle dosimeters to measure children's exposure, and we asked parents to write their children's activities in diaries. We used Poisson mixed-effects and linear regression models to investigate the association of hourly and overall doses, respectively, with children's reported whereabouts. During the observed time, 149 participating children spent 66% indoors at home; 19% indoors away from home; and 15% outdoors. The mean personal exposure was 85.7 nSv/h (range 52.3 nSv/h-145 nSv/h). Exposure was 1.077 (95% CI 1.067, 1.087) times higher indoors than outdoors and varied by building material and (predicted) outdoor dose rates. Our study provides detailed information about children's patterns of exposure to background gamma radiation in Switzerland. Dwelling building materials and outdoor dose rates are important determinants of children's exposure. Future epidemiological studies may benefit from including information about building materials.
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Affiliation(s)
- Christophe L Folly
- Institute of Social and Preventive Medicine (ISPM), University of Bern, 3012 Bern, Switzerland
- Graduate School for Health Sciences (GHS), University of Bern, 3012 Bern, Switzerland
| | - Antonella Mazzei-Abba
- Institute of Social and Preventive Medicine (ISPM), University of Bern, 3012 Bern, Switzerland
- Graduate School for Health Sciences (GHS), University of Bern, 3012 Bern, Switzerland
| | - Astrid Coste
- Institute of Social and Preventive Medicine (ISPM), University of Bern, 3012 Bern, Switzerland
- INSERM UMR 1296, Radiation : Defense, Health,Environment, Centre Léon Bérard, Bâtiment Cheney A 1er étage 28 rue Laennec, 69008 Lyon, France
| | - Christian Kreis
- Institute of Social and Preventive Medicine (ISPM), University of Bern, 3012 Bern, Switzerland
| | - Ben D Spycher
- Corresponding author. Ben D. Spycher, Institute for Social and Preventive Medicine, University of Bern, Mittelstrasse 43, 3012 Bern, Switzerland. E-mail:
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Kawvised S, Prabsattroo T, Munkong W, Pattum P, Iamsaard S, Boonsirichai K, Uttayarat P, Maikaeo L, Sudchai W, Kirisattayakul W. Polygonum odoratum leaf extract attenuates oxidative stress and cell death of Raw 264.7 cells exposed to low dose ionizing radiation. J Food Biochem 2021; 46:e13909. [PMID: 34423456 DOI: 10.1111/jfbc.13909] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 07/15/2021] [Accepted: 08/11/2021] [Indexed: 01/03/2023]
Abstract
This study aims to investigate the effect of Polygonum odoratum leaf extract (POE) on oxidative stress markers and cell death induced by low dose ionizing radiation (LDIR) in Raw 264.7 cells. The biological activities, chromatographic fingerprint, and cytotoxicity of POE were investigated. To determine the radioprotective effect of POE, Raw 264.7 cells were incubated with POE for 1 hr prior to 100 mGy x-irradiation. The cell viability, oxidative stress damage marker (malondialdehyde level; MDA), and endogenous antioxidant markers (superoxide dismutase: SOD, catalase: CAT, and glutathione peroxidase: GSH-Px) were also determined. The results showed that POE contained 8 essential substances and exhibited a potent antioxidant without any cytotoxicity. It was found that POE significantly decreased the MDA level and activated cell viability, SOD, CAT, and GSH-Px activities. The results from this study indicate that POE is a potent antioxidant, which can be developed as a radioprotector for diagnostic procedures. PRACTICAL APPLICATIONS: Polygonum odoratum leaf extract (POE) is a potent antioxidant that attenuates oxidative stress and cell death induced by low dose ionizing radiation (LDIR). POE might protect against cell damage from LDIR, particularly in diagnostic radiology procedures. Therefore, the development of functional food containing POE might be beneficial for patients who plan to undergo the diagnostic radiology procedure. The functional food containing POE might prevent stochastic and deterministic effects for these patients.
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Affiliation(s)
- Supannika Kawvised
- Radiological Technology School, Faculty of Health Science Technology, HRH Princess Chulabhorn College of Medical Science, Chulabhorn Royal Academy, Bangkok, Thailand
| | - Thawatchai Prabsattroo
- Department of Radiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Neurovascular Radiology and Neurointervention Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Waranon Munkong
- Department of Radiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Neurovascular Radiology and Neurointervention Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Panuwat Pattum
- Department of Radiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Neurovascular Radiology and Neurointervention Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Sittichai Iamsaard
- Neurovascular Radiology and Neurointervention Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | | | - Pimporn Uttayarat
- Thailand Institute of Nuclear Technology (Public Organization), Nakhon Nayok, Thailand
| | - Lamai Maikaeo
- Thailand Institute of Nuclear Technology (Public Organization), Nakhon Nayok, Thailand
| | - Waraporn Sudchai
- Thailand Institute of Nuclear Technology (Public Organization), Nakhon Nayok, Thailand
| | - Woranan Kirisattayakul
- Department of Radiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Neurovascular Radiology and Neurointervention Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
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Perez-Gelvez YNC, Camus AC, Bridger R, Wells L, Rhodes OE, Bergmann CW. Effects of chronic exposure to low levels of IR on Medaka ( Oryzias latipes): a proteomic and bioinformatic approach. Int J Radiat Biol 2021; 97:1485-1501. [PMID: 34355643 DOI: 10.1080/09553002.2021.1962570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
PURPOSE Chronic exposure to ionizing radiation (IR) at low doses (<100 mGy) has been insufficiently studied to understand fully the risk to health. Relatively little knowledge exists regarding how species and healthy tissues respond at the protein level to chronic exposure to low doses of IR, and mass spectrometric-based profiling of protein expression is a powerful tool for studying changes in protein abundance. MATERIALS AND METHODS SDS gel electrophoresis, LC-MS/MS mass spectrometry-based approaches and bioinformatic data analytics were used to detect proteomic changes following chronic exposure to moderate/low doses of radiation in adults and normally developed Medaka fish (Oryzias latipes). RESULTS Significant variations in the abundance of proteins involved in thyroid hormone signaling and lipid metabolism were detected, which could be related to the gonadal regression phenotype observed after 21.04 mGy and 204.3 mGy/day exposure. The global proteomic change was towards overexpression of proteins in muscle and skin, while the opposite effect was observed in internal organs. CONCLUSION The present study provides information on the impacts of biologically relevant low doses of IR, which will be useful in future research for the identification of potential biomarkers of IR exposure and allow for a better assessment of radiation biosafety regulations.
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Affiliation(s)
- Yeni Natalia C Perez-Gelvez
- Carbohydrate Complex Research Center, Biochemistry and Molecular Biology, The University of Georgia, Athens, GA, USA
| | - Alvin C Camus
- College of Veterinary Medicine, Department of Pathology, The University of Georgia, Athens, GA, USA
| | - Robert Bridger
- Carbohydrate Complex Research Center, The University of Georgia, Athens, GA, USA
| | - Lance Wells
- Carbohydrate Complex Research Center, The University of Georgia, Athens, GA, USA
| | - Olin E Rhodes
- Savannah River Ecology Laboratory, Odum School of Ecology, The University of Georgia, Athens, GA, USA
| | - Carl W Bergmann
- Carbohydrate Complex Research Center, The University of Georgia, Athens, GA, USA
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Wang Z, Lv MY, Huang YX. Effects of Low-Dose X-Ray on Cell Growth, Membrane Permeability, DNA Damage and Gene Transfer Efficiency. Dose Response 2020; 18:1559325820962615. [PMID: 33192201 PMCID: PMC7597563 DOI: 10.1177/1559325820962615] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 08/31/2020] [Indexed: 12/31/2022] Open
Abstract
Background We aimed to reveal if low dose X-rays would induce harmful or beneficial effect or dual response on biological cells and whether there are conditions the radiation can enhance gene transfer efficiency and promote cell growth but without damage to the cells. Method A systematic study was performed on the effects of Kilo-V and Mega-V X-rays on the cell morphology, viability, membrane permeability, DNA damage, and gene transfection of 293 T and CHO cells. Results The Kilo-V X-rays of very low doses from 0.01 to 0.04 Gray in principle didn't induce any significant change in cell morphology, growth, membrane permeability, and cause DNA damage. The Mega-V X-ray had a damage threshold between 1.0 and 1.5 Gray. The 0.25 Gray Mega-V-X-ray could promote cell growth and gene transfer, while the 1.5 Gray Mega-V X-ray damaged cells. Conclusion The very low dose of KV X-rays is safe to cells, while the effects of Mega-V-X-rays are dose-dependent. Mega-V-X-rays with a dose higher than the damage threshold would be harmful, that between 1.0 -1.5 Gray can evoke dual effects, whereas 0.25 Gray MV X-ray is beneficial for both cell growth and gene transfer, thus would be suitable for radiation-enhanced gene transfection.
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Affiliation(s)
- Zhuo Wang
- Department of Biomedical Engineering, Ji Nan University, Guangzhou, China
| | - Ming-Yue Lv
- Department of Biomedical Engineering, Ji Nan University, Guangzhou, China
| | - Yao-Xiong Huang
- Department of Biomedical Engineering, Ji Nan University, Guangzhou, China
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Walczak K, Olszewski J, Politański P, Zmyślony M. Authors' response (December 8, 2017) to the letter to the Editor concerning the paper "Occupational exposure to radon for underground tourist routes in Poland: Doses to lung and the risk of developing lung cancer". Int J Occup Med Environ Health 2018; 31:707-709. [PMID: 29416141 DOI: 10.13075/ijomeh.1896.01313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Katarzyna Walczak
- Nofer Institute of Occupational Medicine, Łódź, Poland (Department of Radiological Protection).
| | - Jerzy Olszewski
- Nofer Institute of Occupational Medicine, Łódź, Poland (Department of Radiological Protection).
| | - Piotr Politański
- Nofer Institute of Occupational Medicine, Łódź, Poland (Department of Radiological Protection).
| | - Marek Zmyślony
- Nofer Institute of Occupational Medicine, Łódź, Poland (Department of Radiological Protection).
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Rodionova N, Ganzha O, Makovetska L, Druzhyna M, Muzalov I, Mikhailenko V. Effect of low dose ionising radiation and nitric oxide on the state of animal blood system. Probl Radiac Med Radiobiol 2013:366-372. [PMID: 25191742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Indexed: 06/03/2023]
Abstract
OBJECTIVE to investigate the effects of a prolonged influence of nitric oxide and low dose ionizing radiation on the blood system. MATERIALS AND METHODS Adult random-bred male rats 120-150 g of body weight. Animals were treated with different factors: inhalation of nitric oxide for 1 month (14 h per day), fractionated X-ray irradiation (1.0 Gy total absorbed dose), and joint impact of both factors. Hematological, biochemical and biophysical parameters were investigated. RESULTS Prolonged action of nitric oxide and low dose ionizing radiation on the state of animal blood system was asayed. The radioprotective effects of nitric oxide on morpho-functional parameters was shown. These effects emerged in the reaction of erythroid hematopoetic pool and lymphocyte series at a level of disorders of oxidative metabolism, decrease of atypical lymphocytes content in peripheral blood. CONCLUSION Nitric oxide within joint prolonged impact with low dose ionizing radiation makes a radioprotective effect on the blood system. Combined effect of these factors is characterized by the influence on different metabolic pathways and results in better adaptation than under their separate impact.
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Yunis R, Albrecht H, Kalanetra KM, WU S, Rocke DM. Genomic characterization of a three-dimensional skin model following exposure to ionizing radiation. J Radiat Res 2012; 53:860-75. [PMID: 22915785 PMCID: PMC3483859 DOI: 10.1093/jrr/rrs063] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
This study aimed at characterizing the genomic response to low versus moderate doses of ionizing radiation (LDIR versus MDIR) in a three-dimensional (3D) skin model, which exhibits a closer tissue complexity to human skin than monolayer cell cultures. EpiDermFT skin plugs were exposed to 0, 0.1 and 1 Gy doses of X-rays and harvested at 5 min, 3, 8 and 24 h post-irradiation (post-IR). RNA was interrogated for global gene expression alteration. Our results show that MDIR modulated a larger number of genes over the course of 24 h compared to LDIR. However, immediately and throughout the first 3h post-IR, LDIR modulated a larger number of genes than MDIR, mostly associated with cell-cell signaling and survival promotion. Significant modulation of pathways was detected only at 3 h post-IR in MDIR with induction of genes promoting apoptosis. Collectively, the data show different dynamics in the response to LDIR versus MDIR, especially in cell-cycle distribution. LDIR-exposed tissues showed signs of attempted cell-cycle re-entry as early as 3 h post-IR, but were arrested beyond 8 h at the G1/S checkpoint. At 24 h, cells appeared to accumulate at the G2/M checkpoint. MDIR-exposed tissues did not exhibit a prolonged G1/S arrest but rather a prolonged G2/M arrest, which was sustained at least up to 24 h. By 24 h cells exhibited signs of recovery in both LDIR- and MDIR-exposed tissues. In summary, the most pronounced difference in the initial cellular response to LDIR versus MDIR is the promotion of protection and survival in LDIR versus the promotion of apoptosis in MDIR.
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