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Little MP, Boerma M, Bernier MO, Azizova TV, Zablotska LB, Einstein AJ, Hamada N. Effects of confounding and effect-modifying lifestyle, environmental and medical factors on risk of radiation-associated cardiovascular disease. BMC Public Health 2024; 24:1601. [PMID: 38879521 PMCID: PMC11179258 DOI: 10.1186/s12889-024-18701-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 04/23/2024] [Indexed: 06/19/2024] Open
Abstract
BACKGROUND Cardiovascular disease (CVD) is the leading cause of death worldwide. It has been known for some considerable time that radiation is associated with excess risk of CVD. A recent systematic review of radiation and CVD highlighted substantial inter-study heterogeneity in effect, possibly a result of confounding or modifications of radiation effect by non-radiation factors, in particular by the major lifestyle/environmental/medical risk factors and latent period. METHODS We assessed effects of confounding by lifestyle/environmental/medical risk factors on radiation-associated CVD and investigated evidence for modifying effects of these variables on CVD radiation dose-response, using data assembled for a recent systematic review. RESULTS There are 43 epidemiologic studies which are informative on effects of adjustment for confounding or risk modifying factors on radiation-associated CVD. Of these 22 were studies of groups exposed to substantial doses of medical radiation for therapy or diagnosis. The remaining 21 studies were of groups exposed at much lower levels of dose and/or dose rate. Only four studies suggest substantial effects of adjustment for lifestyle/environmental/medical risk factors on radiation risk of CVD; however, there were also substantial uncertainties in the estimates in all of these studies. There are fewer suggestions of effects that modify the radiation dose response; only two studies, both at lower levels of dose, report the most serious level of modifying effect. CONCLUSIONS There are still large uncertainties about confounding factors or lifestyle/environmental/medical variables that may influence radiation-associated CVD, although indications are that there are not many studies in which there are substantial confounding effects of these risk factors.
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Affiliation(s)
- Mark P Little
- Radiation Epidemiology Branch, National Cancer Institute, Room 7E546, 9609 Medical Center Drive MSC 9778, Bethesda, MD, 20892-9778, USA.
- Faculty of Health and Life Sciences, Oxford Brookes University, Headington Campus, Oxford, OX3 0BP, UK.
| | - Marjan Boerma
- Division of Radiation Health, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Marie-Odile Bernier
- Institut de Radioprotection et de Sureté Nucléaire, Fontenay Aux Roses, France
| | - Tamara V Azizova
- Clinical Department, Southern Urals Biophysics Institute, Chelyabinsk Region, Ozyorskoe Shosse 19, Ozyorsk, 456780, Russia
| | - Lydia B Zablotska
- Department of Epidemiology and Biostatistics, School of Medicine, University of California San Francisco, 550 16th St 2nd floor, San Francisco, CA, 94143, USA
| | - Andrew J Einstein
- Seymour, Paul, and Gloria Milstein Division of Cardiology, Department of Medicine, and Department of Radiology, Columbia University Irving Medical Center/New York-Presbyterian Hospital, New York, NY, USA
| | - Nobuyuki Hamada
- Biology and Environmental Chemistry Division, Sustainable System Research Laboratory, Central Research Institute of Electric Power Industry (CRIEPI), 1646 Abiko, Chiba 270-1194, Japan
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Kollayan BY, Cansiz D, Beler M, Unal I, Emekli-Alturfan E, Yalcinkaya SE. Effects of low-dose ionizing radiation on the molecular pathways linking neurogenesis and autism spectrum disorders in zebrafish embryos. Drug Chem Toxicol 2024:1-14. [PMID: 38384198 DOI: 10.1080/01480545.2024.2318444] [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: 12/15/2023] [Accepted: 02/08/2024] [Indexed: 02/23/2024]
Abstract
Prenatal exposure to environmental factors may play an important role in the aetiopathogenesis of autism spectrum disorder (ASD). We aim to investigate the potential effects of low-dose x-rays from dental diagnostic x-rays on neurodevelopment and molecular mechanisms associated with ASD in developing zebrafish embryos. Zebrafish embryos were divided into four groups and exposed using a dental x-ray unit: control, 0.08, 0.15 and 0.30 seconds, which are exemplary exposure settings for periapical imaging. These exposure times were measured as 7.17, 23.17 and 63.83 mSv using optical stimulated luminescence dosimeters. At the end of 72 hours post-fertilization, locomotor activity, oxidant-antioxidant status, and acetylcholine esterase (AChE) activity were analyzed. Expression of genes related to apoptosis (bax, bcl2a, p53), neurogenesis (α1-tubulin, syn2a, neurog1, elavl3) and ASD (eif4eb, adsl2a, shank3) was determined by RT-PCR. Even at reduced doses, developmental toxicity was observed in three groups as evidenced by pericardial edema, yolk sac edema and scoliosis. Deleterious effects of dental x-rays on neurogenesis through impaired locomotor activity, oxidative stress, apoptosis and alterations in genes associated with neurogenesis and ASD progression were more pronounced in the 0.30s exposure group. Based on these results we suggest that the associations between ASD and low-dose ionizing radiation need a closer look.
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Affiliation(s)
- Burcu Yeliz Kollayan
- Institute of Health Sciences, Department of Oral and Maxillofacial Radiology, Marmara University, Istanbul, Turkey
| | - Derya Cansiz
- Department of Medical Biochemistry, Faculty of Medicine, Istanbul Medipol University, Istanbul, Turkey
| | - Merih Beler
- Institute of Health Sciences, Department Biochemistry, Marmara University, Istanbul, Turkey
| | - Ismail Unal
- Institute of Health Sciences, Department Biochemistry, Marmara University, Istanbul, Turkey
| | - Ebru Emekli-Alturfan
- Department of Basic Medical Sciences, Faculty of Dentistry, Marmara University, Istanbul, Turkey
| | - Sebnem Ercalik Yalcinkaya
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Marmara University, Istanbul, Turkey
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Karagöz A, Beler M, Altun BD, Ünal İ, Cansız D, Gündüz H, Alturfan AA, Emekli-Alturfan E, Erçalık Yalçınkaya Ş. Panoramic dental X-ray exposure leads to oxidative stress, inflammation and apoptosis-mediated developmental defects in zebrafish embryos. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2023; 124:101661. [PMID: 37866507 DOI: 10.1016/j.jormas.2023.101661] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 10/19/2023] [Indexed: 10/24/2023]
Abstract
Panoramic x-ray units are widely used in dental radiodiagnostics. Patients are exposed to relatively low radiation doses with panoramic imaging, but considering lifetime frequency of exposure, even a small risk can have serious health consequences. Our aim was to assess the effects of panoramic x-rays at two different exposure times on developing zebrafish embryos, focusing on oxidative stress, inflammation, apoptotic pathways, and development. Zebrafish embryos were divided into three groups: control, standard panoramic (SPE, 5.5 s exposure time) and pedodontic panoramic x-ray group (PPE, 4.8 s exposure time). Optically stimulated luminescence dosimeters were used to measure absorbed doses. Mean radiation doses for SPE and PPE were 7.83 mSv and 5.83 mSv respectively. At the end of 96 h post-fertilization, lipid peroxidation (LPO), nitric oxide (NO), reduced glutathione (GSH), glutathione S-transferase and superoxide dismutase were measured in the embryos. Expressions of genes related with inflammation (tnfα, il6, ill15, il21), immunoregulation (ifng) and apoptosis (p53, bax, casp2, casp3, casp8) were determined by RT-PCR. Even at reduced doses at high-speed mode, developmental toxicity was observed in both groups as evidenced by decreased pigmentation, yolk sac oedema, and spinal curvature. While deterioration of oxidant-antioxidant balance, suppression of immune response, induction of inflammation and apoptosis were observed through increased LPO, NO, decreased GSH, ifng, and increased expressions of genes related with inflammation and apoptosis, these effects were more pronounced in the SPE group. These results demonstrate the influence of exposure time and indicate the need for further consideration of optimal panoramic modes from a radiation-induced damage perspective.
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Affiliation(s)
- Atakan Karagöz
- Department Biochemistry, Institute of Health Sciences, Marmara University, Istanbul, Turkey
| | - Merih Beler
- Department Biochemistry, Institute of Health Sciences, Marmara University, Istanbul, Turkey
| | - Büşra Dilara Altun
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Marmara University, Istanbul, Turkey
| | - İsmail Ünal
- Department Biochemistry, Institute of Health Sciences, Marmara University, Istanbul, Turkey
| | - Derya Cansız
- Department of Biochemistry, Faculty of Medicine, Istanbul Medipol University, Kavacık, Istanbul, Turkey
| | - Hüseyin Gündüz
- Epsilon Landauer Dosimeter Technologies, Istanbul, Turkey
| | - Ahmet Ata Alturfan
- Department of Biochemistry, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Fatih, Istanbul, Turkey
| | - Ebru Emekli-Alturfan
- Department of Biochemistry, Faculty of Dentistry, Marmara University, Istanbul, Turkey.
| | - Şebnem Erçalık Yalçınkaya
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Marmara University, Istanbul, Turkey
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Little MP, Azizova TV, Richardson DB, Tapio S, Bernier MO, Kreuzer M, Cucinotta FA, Bazyka D, Chumak V, Ivanov VK, Veiga LHS, Livinski A, Abalo K, Zablotska LB, Einstein AJ, Hamada N. Ionising radiation and cardiovascular disease: systematic review and meta-analysis. BMJ 2023; 380:e072924. [PMID: 36889791 PMCID: PMC10535030 DOI: 10.1136/bmj-2022-072924] [Citation(s) in RCA: 31] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/09/2023] [Indexed: 03/10/2023]
Abstract
OBJECTIVE To systematically review and perform a meta-analysis of radiation associated risks of cardiovascular disease in all groups exposed to radiation with individual radiation dose estimates. DESIGN Systematic review and meta-analysis. MAIN OUTCOME MEASURES Excess relative risk per unit dose (Gy), estimated by restricted maximum likelihood methods. DATA SOURCES PubMed and Medline, Embase, Scopus, Web of Science Core collection databases. ELIGIBILITY CRITERIA FOR SELECTING STUDIES Databases were searched on 6 October 2022, with no limits on date of publication or language. Animal studies and studies without an abstract were excluded. RESULTS The meta-analysis yielded 93 relevant studies. Relative risk per Gy increased for all cardiovascular disease (excess relative risk per Gy of 0.11 (95% confidence interval 0.08 to 0.14)) and for the four major subtypes of cardiovascular disease (ischaemic heart disease, other heart disease, cerebrovascular disease, all other cardiovascular disease). However, interstudy heterogeneity was noted (P<0.05 for all endpoints except for other heart disease), possibly resulting from interstudy variation in unmeasured confounders or effect modifiers, which is markedly reduced if attention is restricted to higher quality studies or those at moderate doses (<0.5 Gy) or low dose rates (<5 mGy/h). For ischaemic heart disease and all cardiovascular disease, risks were larger per unit dose for lower dose (inverse dose effect) and for fractionated exposures (inverse dose fractionation effect). Population based excess absolute risks are estimated for a number of national populations (Canada, England and Wales, France, Germany, Japan, USA) and range from 2.33% per Gy (95% confidence interval 1.69% to 2.98%) for England and Wales to 3.66% per Gy (2.65% to 4.68%) for Germany, largely reflecting the underlying rates of cardiovascular disease mortality in these populations. Estimated risk of mortality from cardiovascular disease are generally dominated by cerebrovascular disease (around 0.94-1.26% per Gy), with the next largest contribution from ischaemic heart disease (around 0.30-1.20% per Gy). CONCLUSIONS Results provide evidence supporting a causal association between radiation exposure and cardiovascular disease at high dose, and to a lesser extent at low dose, with some indications of differences in risk between acute and chronic exposures, which require further investigation. The observed heterogeneity complicates a causal interpretation of these findings, although this heterogeneity is much reduced if only higher quality studies or those at moderate doses or low dose rates are considered. Studies are needed to assess in more detail modifications of radiation effect by lifestyle and medical risk factors. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42020202036.
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Affiliation(s)
- Mark P Little
- Radiation Epidemiology Branch, National Cancer Institute, Bethesda, MD, USA
| | - Tamara V Azizova
- Clinical Department, Southern Urals Biophysics Institute, Ozyorsk, Chelyabinsk Region, Russia
| | - David B Richardson
- Department of Environmental and Occupational Health, Irvine Program in Public Health, University of California Irvine, Irvine, CA, USA
| | - Soile Tapio
- Technische Universität München, Munich, Germany
| | - Marie-Odile Bernier
- Institut de Radioprotection et de Sureté Nucléaire, Fontenay aux Roses, France
| | | | - Francis A Cucinotta
- Department of Health Physics and Diagnostic Sciences, University of Nevada Las Vegas, Las Vegas, NV, USA
| | - Dimitry Bazyka
- National Research Center for Radiation Medicine, National Academy of Medical Sciences of Ukraine, Kyiv, Ukraine
| | - Vadim Chumak
- National Research Center for Radiation Medicine, National Academy of Medical Sciences of Ukraine, Kyiv, Ukraine
| | - Victor K Ivanov
- Medical Radiological Research Center of Russian Academy of Medical Sciences, Obninsk, Russia
| | - Lene H S Veiga
- Radiation Epidemiology Branch, National Cancer Institute, Bethesda, MD, USA
| | - Alicia Livinski
- National Institutes of Health Library, National Institutes of Health, Bethesda, MD, USA
| | - Kossi Abalo
- Department of Medicine Solna, Clinical Epidemiology Division, Karolinska Institutet, Stockholm, Sweden
- Department of Immunology Genetics and Pathology, Cancer Precision Medicine, Uppsala University, Uppsala, Sweden
| | - Lydia B Zablotska
- Department of Epidemiology and Biostatistics, School of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Andrew J Einstein
- Seymour, Paul, and Gloria Milstein Division of Cardiology, Department of Medicine, and Department of Radiology, Columbia University Irving Medical Center/New York-Presbyterian Hospital, New York, NY, USA
| | - Nobuyuki Hamada
- Biology and Environmental Chemistry Division, Sustainable System Research Laboratory, Central Research Institute of Electric Power Industry (CRIEPI), Komae, Tokyo, Japan
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Babini G, Baiocco G, Barbieri S, Morini J, Sangsuwan T, Haghdoost S, Yentrapalli R, Azimzadeh O, Rombouts C, Aerts A, Quintens R, Ebrahimian T, Benotmane MA, Ramadan R, Baatout S, Tapio S, Harms-Ringdahl M, Ottolenghi A. A systems radiation biology approach to unravel the role of chronic low-dose-rate gamma-irradiation in inducing premature senescence in endothelial cells. PLoS One 2022; 17:e0265281. [PMID: 35286349 PMCID: PMC8920222 DOI: 10.1371/journal.pone.0265281] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 02/24/2022] [Indexed: 12/13/2022] Open
Abstract
Purpose The aim of this study was to explore the effects of chronic low-dose-rate gamma-radiation at a multi-scale level. The specific objective was to obtain an overall view of the endothelial cell response, by integrating previously published data on different cellular endpoints and highlighting possible different mechanisms underpinning radiation-induced senescence. Materials and methods Different datasets were collected regarding experiments on human umbilical vein endothelial cells (HUVECs) which were chronically exposed to low dose rates (0, 1.4, 2.1 and 4.1 mGy/h) of gamma-rays until cell replication was arrested. Such exposed cells were analyzed for different complementary endpoints at distinct time points (up to several weeks), investigating cellular functions such as proliferation, senescence and angiogenic properties, as well as using transcriptomics and proteomics profiling. A mathematical model was proposed to describe proliferation and senescence. Results Simultaneous ceasing of cell proliferation and senescence onset as a function of time were well reproduced by the logistic growth curve, conveying shared equilibria between the two endpoints. The combination of all the different endpoints investigated highlighted a dose-dependence for prematurely induced senescence. However, the underpinning molecular mechanisms appeared to be dissimilar for the different dose rates, thus suggesting a more complex scenario. Conclusions This study was conducted integrating different datasets, focusing on their temporal dynamics, and using a systems biology approach. Results of our analysis highlight that different dose rates have different effects in inducing premature senescence, and that the total cumulative absorbed dose also plays an important role in accelerating endothelial cell senescence.
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Affiliation(s)
| | | | - Sofia Barbieri
- Physics Department, University of Pavia, Pavia, Italy
- Faculty of Medicine, Department of Cellular Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - Jacopo Morini
- Physics Department, University of Pavia, Pavia, Italy
| | - Traimate Sangsuwan
- Department of Molecular Bioscience, Centre for Radiation Protection Research, Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
| | - Siamak Haghdoost
- Department of Molecular Bioscience, Centre for Radiation Protection Research, Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
- ARIA Laboratory, University of Caen Normandy, CIMAP-GANIL, 14076, Caen, France
| | - Ramesh Yentrapalli
- Institute of Radiation Biology, Helmholtz Zentrum Muenchen—German Research Centre for Environmental Health, Neuherberg, Germany
| | - Omid Azimzadeh
- Institute of Radiation Biology, Helmholtz Zentrum Muenchen—German Research Centre for Environmental Health, Neuherberg, Germany
- Section Radiation Biology, Federal Office for Radiation Protection, Munich, Germany
| | - Charlotte Rombouts
- Radiobiology Unit, Belgian Nuclear Research Centre, SCK CEN, Boeretang, Belgium
- Department of Molecular Biotechnology, Ghent University, Ghent, Belgium
| | - An Aerts
- Radiobiology Unit, Belgian Nuclear Research Centre, SCK CEN, Boeretang, Belgium
| | - Roel Quintens
- Radiobiology Unit, Belgian Nuclear Research Centre, SCK CEN, Boeretang, Belgium
| | - Teni Ebrahimian
- Laboratoire de Radiobiologie et RadioToxicologie expérimentale, Service de recherche des effets biologiques et sanitaires des rayonnements ionisants, Pôle santé, F-92262, Fontenay-aux-Roses, France
| | | | - Raghda Ramadan
- Radiobiology Unit, Belgian Nuclear Research Centre, SCK CEN, Boeretang, Belgium
- * E-mail:
| | - Sarah Baatout
- Radiobiology Unit, Belgian Nuclear Research Centre, SCK CEN, Boeretang, Belgium
- Department of Molecular Biotechnology, Ghent University, Ghent, Belgium
| | - Soile Tapio
- Institute of Radiation Biology, Helmholtz Zentrum Muenchen—German Research Centre for Environmental Health, Neuherberg, Germany
| | - Mats Harms-Ringdahl
- Department of Molecular Bioscience, Centre for Radiation Protection Research, Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
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Aryafar T, Amini P, Rezapoor S, Shabeeb D, Eleojo Musa A, Najafi M, Shirazi A. Modulation of Radiation-Induced NADPH Oxidases in Rat's Heart Tissues by Melatonin. J Biomed Phys Eng 2021; 11:465-472. [PMID: 34458194 PMCID: PMC8385219 DOI: 10.31661/jbpe.v0i0.1094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Accepted: 02/18/2019] [Indexed: 12/13/2022]
Abstract
Background Experimental studies have shown that infiltration of inflammatory cells as well as upregulation of some cytokines play a central role in the development of late effects of ionizing radiation in heart tissues. Evidences have shown that an increased level of TGF-β has a direct correlation with late effects of exposure to ionizing radiation such as chronic oxidative stress and fibrosis. Recent studies have shown that TGF-β, through upregulation of pro-oxidant enzymes such as NOX2 and NOX4, promotes continuous ROS production and accumulation of fibrosis. Objective In present study, we aimed to evaluate the expression of NOX2 and NOX4 signaling pathways as well as possible modulatory effects of melatonin on the expression of these genes. Material and Methods In this experimental study, four groups of 20 rats (5 in each) were used as follows; G1: control; G2: melatonin; G3: radiation; G4: radiation + melatonin. 100 mg/kg of melatonin was administrated before irradiation of heart tissues with 15 Gy gamma rays. 10 weeks after irradiation, heart tissues were collected for real-time Polymerase chain reaction (PCR). Results Results showed a significant increase in the expression of TGF-β, Smad2, NF-kB, NOX2 and NOX4. The upregulation of NOX2 was more obvious by 20-fold compared to other genes. Except for TGF-β, melatonin could attenuate the expression of other genes. Conclusion This study indicated that exposure of rat's heart tissues to radiation leads to upregulation of TGF-β-NOX4 and TGF-β-NOX2 pathways. Melatonin, through modulation of these genes, may be able to alleviate radiation-induced chronic oxidative stress and subsequent consequences.
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Affiliation(s)
- Tayebeh Aryafar
- PhD, Department of Medical Physics and Biomedical Engineering, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Peyman Amini
- MSc, Department of Radiology, Faculty of Paramedical, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeed Rezapoor
- MSc, Department of Radiology, Faculty of Paramedical, Tehran University of Medical Sciences, Tehran, Iran
| | - Dheyauldeen Shabeeb
- PhD, Department of Physiology, College of Medicine, University of Misan, Misan, Iraq
| | - Ahmed Eleojo Musa
- PhD, Research Center of Molecular and Cellular Imaging, Tehran University of Medical Sciences (International Campus), Tehran, Iran
| | - Masoud Najafi
- PhD, Radiology and Nuclear Medicine Department, School of Paramedical Sciences, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Alireza Shirazi
- PhD, Department of Medical Physics and Biomedical Engineering, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- PhD, Cancer Research Centre, Cancer Institute, Tehran University of Medical Sciences, Tehran, Iran
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Hwang SY, Choi ES, Kim YS, Gim BE, Ha M, Kim HY. Health effects from exposure to dental diagnostic X-ray. ENVIRONMENTAL HEALTH AND TOXICOLOGY 2018; 33:e2018017. [PMID: 30661338 PMCID: PMC6341170 DOI: 10.5620/eht.e2018017] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 07/04/2018] [Indexed: 05/05/2023]
Abstract
The purpose of this review is to summarize the results of studies on of the association between exposure to dental X-rays and health risk. To perform the systematic review, We searched the PUBMED, EMBASE, and MEDLINE databases for papers published before December 15, 2016. A total of 2 158 studies, excluding duplicate studies, were found. Two reviewers independently evaluated the eligibility of each study. The final 21 studies were selected after application of exclusion criteria. In terms of health outcomes, there were 10 studies about brain tumors, 5 about thyroid cancer, 3 about tumors of head and neck areas, and 3 related to systemic health. In brain tumor studies, the association between dental X-ray exposure and meningioma was statistically significant in 5 of the 7 studies. In 4 of the 5 thyroid-related studies, there was a significant correlation with dental diagnostic X-rays. In studies on head and neck areas, tumors included laryngeal, parotid gland, and salivary gland cancers. There was also a statistically significant correlation between full-mouth X-rays and salivary gland cancer, but not parotid gland cancer. Health outcomes such as leukemia, low birth weight, cataracts, and thumb carcinomas were also reported. In a few studies examining health effects related to dental X-ray exposure, possibly increased risks of meningioma and thyroid cancer were suggested. More studies with a large population and prospective design are needed to elaborate these associations further.
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Affiliation(s)
- Su-Yeon Hwang
- Department of Public Health Sciences, Graduate School, Korea University, Seoul, Korea
| | - Eun-Sil Choi
- Department of Public Health Sciences, Graduate School, Korea University, Seoul, Korea
| | - Young-Sun Kim
- Department of Public Health Sciences, Graduate School, Korea University, Seoul, Korea
| | - Bo-Eun Gim
- Expert Group on Health Promotion for Seoul Metropolitan Government, Seoul, Korea
| | - Mina Ha
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Korea
| | - Hae-Young Kim
- Department of Public Health Sciences, Graduate School, Korea University, Seoul, Korea
- Department of Health Policy and Management, College of Health Science, Korea University, Seoul, Korea
- Corresponding author: Hae-Young Kim Department of Health Policy and Management, College of Health Sciences, Korea University, 73 Inchon-ro, Seongbuk-gu, Seoul 02841, Korea E-mail:
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Markabayeva A, Bauer S, Pivina L, Bjørklund G, Chirumbolo S, Kerimkulova A, Semenova Y, Belikhina T. Increased prevalence of essential hypertension in areas previously exposed to fallout due to nuclear weapons testing at the Semipalatinsk Test Site, Kazakhstan. ENVIRONMENTAL RESEARCH 2018; 167:129-135. [PMID: 30014894 DOI: 10.1016/j.envres.2018.07.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Revised: 07/06/2018] [Accepted: 07/07/2018] [Indexed: 06/08/2023]
Abstract
This study examines the association between environmental radiation exposure and essential hypertension in a series of investigated geographical districts adjacent to the Semipalatinsk nuclear test site in Kazakhstan. The sample consists of 2000 volunteers participants in screening examinations in three administrative districts close to the nuclear test site, which was carried out as part of the Government Programs on Environmental Health Hazard. The cross-sectional study compares prevalence ratios in a population sample with long-term exposure in the low and intermediate dose range. Age-adjusted odds ratios for hypertension were found significantly increased with higher exposure groups. After accounting for main cardiovascular risk factors into the model and stratifying by gender, the prevalence odds ratios for radiation remained significantly increased, with a significant dose-response effect observed for some but not all subgroups. The results support existing evidence of cardiovascular health effects of radiation exposure and of persisting environmental health issues that require attention in both epidemiological surveys and healthcare provision.
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Affiliation(s)
| | | | | | - Geir Bjørklund
- Council for Nutritional and Environmental Medicine, Toften 24, 8610 Mo i Rana, Norway.
| | - Salvatore Chirumbolo
- Department of Neuroscience, Biomedicine and Movement Sciences-University of Verona, Verona, Italy
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Arrandale VH, Bornstein S, King A, Takaro TK, Demers PA. Designing exposure registries for improved tracking of occupational exposure and disease. Canadian Journal of Public Health 2016; 107:e119-e125. [PMID: 27348098 DOI: 10.17269/cjph.107.5039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 01/21/2016] [Accepted: 10/27/2015] [Indexed: 11/17/2022]
Abstract
OBJECTIVES Registries are one strategy for collecting information on occupational exposure and disease in populations. Recently leaders in the Canadian occupational health and safety community have shown an interest in the use of occupational exposure registries. The primary goal of this study was to review a series of Canadian exposure registries to identify their strengths and weaknesses as a tool for tracking occupational exposure and disease in Canada. A secondary goal was to identify the features of an exposure registry needed to specifically contribute to prevention, including the identification of new exposure-disease relationships. METHODS A documentary review of five exposure registries from Canada was completed. Strengths and limitations of the registries were compared and key considerations for designing new registries were identified. RESULTS The goals and structure of the exposure registries varied considerably. Most of the reviewed registries had voluntary registration, which presents challenges for the use of the data for either surveillance or epidemiology. It is recommended that eight key issues be addressed when planning new registries: clear registry goal(s), a definition of exposure, data to be collected (and how it will be used), whether enrolment will be mandatory, as well as ethical, privacy and logistical considerations. CONCLUSIONS When well constructed, an exposure registry can be a valuable tool for surveillance, epidemiology and ultimately the prevention of occupational disease. However, exposure registries also have a number of actual and potential limitations that need to be considered.
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Affiliation(s)
- Victoria H Arrandale
- Occupational Cancer Research Centre, Cancer Care Ontario, 525 University Avenue (3-010), ON, M5G 1X3, Canada. .,Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada.
| | - Stephen Bornstein
- Centre of Applied Health Research, Memorial University, St. John's, NL, Canada
| | - Andrew King
- School of Labour Studies, McMaster University, Hamilton, ON, Canada
| | - Timothy K Takaro
- Faculty of Health Sciences, Simon Fraser University, Burnaby, BC, Canada
| | - Paul A Demers
- Occupational Cancer Research Centre, Cancer Care Ontario, 525 University Avenue (3-010), ON, M5G 1X3, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
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Laiakis EC, Strassburg K, Bogumil R, Lai S, Vreeken RJ, Hankemeier T, Langridge J, Plumb RS, Fornace AJ, Astarita G. Metabolic phenotyping reveals a lipid mediator response to ionizing radiation. J Proteome Res 2014; 13:4143-54. [PMID: 25126707 PMCID: PMC4156265 DOI: 10.1021/pr5005295] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Exposure to ionizing radiation has dramatically increased in modern society, raising serious health concerns. The molecular response to ionizing radiation, however, is still not completely understood. Here, we screened mouse serum for metabolic alterations following an acute exposure to γ radiation using a multiplatform mass-spectrometry-based strategy. A global, molecular profiling revealed that mouse serum undergoes a series of significant molecular alterations following radiation exposure. We identified and quantified bioactive metabolites belonging to key biochemical pathways and low-abundance, oxygenated, polyunsaturated fatty acids (PUFAs) in the two groups of animals. Exposure to γ radiation induced a significant increase in the serum levels of ether phosphatidylcholines (PCs) while decreasing the levels of diacyl PCs carrying PUFAs. In exposed mice, levels of pro-inflammatory, oxygenated metabolites of arachidonic acid increased, whereas levels of anti-inflammatory metabolites of omega-3 PUFAs decreased. Our results indicate a specific serum lipidomic biosignature that could be utilized as an indicator of radiation exposure and as novel target for therapeutic intervention. Monitoring such a molecular response to radiation exposure might have implications not only for radiation pathology but also for countermeasures and personalized medicine.
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Affiliation(s)
- Evagelia C Laiakis
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University , Washington DC 20057, United States
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Mezentsev A, Amundson SA. Global gene expression responses to low- or high-dose radiation in a human three-dimensional tissue model. Radiat Res 2011; 175:677-88. [PMID: 21486161 DOI: 10.1667/rr2483.1] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Accumulating data suggest that the biological responses to high and low doses of radiation are qualitatively different, necessitating the direct study of low-dose responses to better understand potential risks. Most such studies have used two-dimensional culture systems, which may not fully represent responses in three-dimensional tissues. To gain insight into low-dose responses in tissue, we have profiled global gene expression in EPI-200, a three-dimensional tissue model that imitates the structure and function of human epidermis, at 4, 16 and 24 h after exposure to high (2.5 Gy) and low (0.1 Gy) doses of low-LET protons. The most significant gene ontology groups among genes altered in expression were consistent with effects observed at the tissue level, where the low dose was associated with recovery and tissue repair, while the high dose resulted in loss of structural integrity and terminal differentiation. Network analysis of the significantly responding genes suggested that TP53 dominated the response to 2.5 Gy, while HNF4A, a novel transcription factor not previously associated with radiation response, was most prominent in the low-dose response. HNF4A protein levels and phosphorylation were found to increase in tissues and cells after low- but not high-dose irradiation.
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Affiliation(s)
- Alexandre Mezentsev
- Center for Radiological Research, Columbia University Medical Center, New York, New York 10032, USA
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Polish bibliography of occupational medicine, 2009. Int J Occup Med Environ Health 2010. [DOI: 10.2478/v10001-010-0033-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Abstract
Adaptive responses to low doses of low LET radiation occur in all organisms thus far examined, from single cell lower eukaryotes to mammals. These responses reduce the deleterious consequences of DNA damaging events, including radiation-induced or spontaneous cancer and non-cancer diseases in mice. The adaptive response in mammalian cells and mammals operates within a certain window that can be defined by upper and lower dose thresholds, typically between about 1 and 100 mGy for a single low dose rate exposure. However, these thresholds for protection are not a fixed function of total dose, but also vary with dose rate, additional radiation or non-radiation stressors, tissue type and p53 functional status. Exposures above the upper threshold are generally detrimental, while exposures below the lower threshold may or may not increase either cancer or non-cancer disease risk.
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Affiliation(s)
- Ronald E J Mitchel
- Radiation Protection Research and Instrumentation Branch, Atomic Energy of Canada Limited, Chalk River Laboratories, Chalk River, ON Canada
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