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Macé L, Brizais C, Bachelot F, Manoury A, Thomé S, Gloaguen C, Garali I, Magneron V, Monceau V, Sache A, Voyer F, Elie C, Roy L, Gensdarmes F, Klokov D, Block ML, Ibanez C. Exposure to tungsten particles via inhalation triggers early toxicity marker expression in the rat brain. Inhal Toxicol 2024; 36:261-274. [PMID: 38836331 DOI: 10.1080/08958378.2024.2349895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 04/26/2024] [Indexed: 06/06/2024]
Abstract
OBJECTIVE Our work is focused on tungsten, considered as an emerging contaminant. Its environmental dispersion is partly due to mining and military activities. Exposure scenario can also be occupational, in areas such as the hard metal industry and specific nuclear facilities. Our study investigated the cerebral effects induced by the inhalation of tungsten particles. METHODS Inhalation exposure campaigns were carried out at two different concentrations (5 and 80 mg/m3) in single and repeated modes (4 consecutive days) in adult rats within a nose-only inhalation chamber. Processes involved in brain toxicity were investigated 24 h after exposure. RESULTS AND DISCUSSION Site-specific effects in terms of neuroanatomy and concentration-dependent changes in specific cellular actors were observed. Results obtained in the olfactory bulb suggest a potential early effect on the survival of microglial cells. Depending on the mode of exposure, these cells showed a decrease in density accompanied by an increase in an apoptotic marker. An abnormal phenotype of the nuclei of mature neurons, suggesting neuronal suffering, was also observed in the frontal cortex, and can be linked to the involvement of oxidative stress. The differential effects observed according to exposure patterns could involve two components: local (brain-specific) and/or systemic. Indeed, tungsten, in addition to being found in the lungs and kidneys, was present in the brain of animals exposed to the high concentration. CONCLUSION Our data question the perceived innocuity of tungsten relative to other metals and raise hypotheses regarding possible adaptive or neurotoxic mechanisms that could ultimately alter neuronal integrity.
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Affiliation(s)
- Léo Macé
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Avenue de la Division Leclerc, Fontenay aux Roses, France
| | - Chloé Brizais
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Avenue de la Division Leclerc, Fontenay aux Roses, France
| | - Florence Bachelot
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Avenue de la Division Leclerc, Fontenay aux Roses, France
| | - Annabelle Manoury
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Avenue de la Division Leclerc, Fontenay aux Roses, France
| | - Sébastien Thomé
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Avenue de la Division Leclerc, Fontenay aux Roses, France
| | - Céline Gloaguen
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Avenue de la Division Leclerc, Fontenay aux Roses, France
| | - Imène Garali
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Avenue de la Division Leclerc, Fontenay aux Roses, France
| | - Victor Magneron
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Avenue de la Division Leclerc, Fontenay aux Roses, France
| | - Virginie Monceau
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Avenue de la Division Leclerc, Fontenay aux Roses, France
| | - Amandine Sache
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Avenue de la Division Leclerc, Fontenay aux Roses, France
| | - Frédéric Voyer
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Avenue de la Division Leclerc, Fontenay aux Roses, France
| | - Christelle Elie
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Avenue de la Division Leclerc, Fontenay aux Roses, France
| | - Laurence Roy
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Avenue de la Division Leclerc, Fontenay aux Roses, France
| | - François Gensdarmes
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Sûreté Nucléaire, Service du Confinement et de l'Aérodispersion des Polluants, Gif-sur-YvetteCedex, France
| | - Dmitry Klokov
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Avenue de la Division Leclerc, Fontenay aux Roses, France
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Canada
| | - Michelle L Block
- Department of Pharmacology and Toxicology, The Stark Neurosciences Research Institute, IN University School of Medicine, Indianapolis, IN, USA
| | - Chrystelle Ibanez
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Avenue de la Division Leclerc, Fontenay aux Roses, France
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Gui J, Ding R, Huang D, Wang L, Han Z, Yang X, Yang J, Luo H, Jiang L. Associations between urinary heavy metals and anxiety among adults in the National Health and Nutrition Examination Survey (NHANES), 2007-2012. CHEMOSPHERE 2023; 341:140085. [PMID: 37690549 DOI: 10.1016/j.chemosphere.2023.140085] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 09/01/2023] [Accepted: 09/04/2023] [Indexed: 09/12/2023]
Abstract
BACKGROUND Few studies have investigated the associations between heavy metals and anxiety. The purpose of this study was to examine the associations between single and combined exposure to heavy metals and anxiety. METHODS This study employed data from the National Health and Nutrition Examination Survey (NHANES) from 2007 to 2012. Anxiety was assessed by patients self-reporting the number of anxious days per month. First, we evaluated the associations between 10 heavy metals single exposure and anxiety by multivariable logistic regression. We then selected 5 heavy metals (cadmium, antimony, cobalt, tungsten, and uranium) for further analysis by elastic net regression. Subsequently, principal component analysis (PCA), weighted quantile regression (WQS), and Bayesian kernel machine regression (BKMR) were utilized to evaluate the associations between 5 heavy metals co-exposure and anxiety. RESULTS This study included 4512 participants, among whom 1206 participants were in an anxiety state. Urinary cadmium and antimony were separately related to an increased risk of anxiety (p for trend <0.01 and < 0.01, respectively). In PCA analysis, PC1 was associated with an increased risk of anxiety (p for trend <0.001). In WQS analysis, the positive WQS index was substantially linked with the risk of anxiety (OR (95%CI): 1.23 (1.04,1.39)). In BKMR analysis, the overall effects of co-exposure to heavy metals were positively connected with anxiety. CONCLUSION Our study identified a positive correlation between individual exposure to cadmium and antimony and the risk of anxiety. Additionally, the co-exposure to cadmium, antimony, cobalt, tungsten, and uranium was associated with an increased risk of anxiety.
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Affiliation(s)
- Jianxiong Gui
- Department of Neurology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - Ran Ding
- Department of Neurology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - Dishu Huang
- Department of Neurology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - Lingman Wang
- Department of Neurology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - Ziyao Han
- Department of Neurology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - Xiaoyue Yang
- Department of Neurology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - Jiaxin Yang
- Department of Neurology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - Hanyu Luo
- Department of Neurology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - Li Jiang
- Department of Neurology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China.
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Renal toxicity and biokinetics models after repeated uranium instillation. Sci Rep 2023; 13:4111. [PMID: 36914734 PMCID: PMC10011524 DOI: 10.1038/s41598-023-31073-1] [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: 10/20/2022] [Accepted: 03/06/2023] [Indexed: 03/15/2023] Open
Abstract
During nuclear fuel processing, workers can potentially be exposed to repeated inhalations of uranium compounds. Uranium nephrotoxicity is well documented after acute uranium intake, but it is controversial after long-term or protracted exposure. This study aims to analyze the nephrotoxicity threshold after repeated uranium exposure through upper airways and to investigate the resulting uranium biokinetics in comparison to reference models. Mice (C57BL/6J) were exposed to uranyl nitrate (0.03-3 mg/kg/day) via intranasal instillation four times a week for two weeks. Concentrations of uranium in urines and tissues were measured at regular time points (from day 1 to 91 post-exposure). At each exposure level, the amount of uranium retained in organs/tissues (kidney, lung, bone, nasal compartment, carcass) and excreta (urine, feces) reflected the two consecutive weeks of instillation except for renal uranium retention for the highest uranium dose. Nephrotoxicity biomarkers, KIM-1, clusterin and osteopontin, are induced from day 4 to day 21 and associated with changes in renal function (arterial fluxes) measured using non-invasive functional imaging (Doppler-ultrasonography) and confirmed by renal histopathological analysis. These results suggest that specific biokinetic models should be developed to consider altered uranium excretion and retention in kidney due to nephrotoxicity. The threshold is between 0.25 and 1 mg/kg/day after repeated exposure to uranium via upper airways.
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Abstract
Air pollution is a complex mixture of gases and particulate matter, with adsorbed organic and inorganic contaminants, to which exposure is lifelong. Epidemiological studies increasingly associate air pollution with multiple neurodevelopmental disorders and neurodegenerative diseases, findings supported by experimental animal models. This breadth of neurotoxicity across these central nervous system diseases and disorders likely reflects shared vulnerability of their inflammatory and oxidative stress-based mechanisms and a corresponding ability to produce brain metal dyshomeo-stasis. Future research to define the responsible contaminants of air pollution underlying this neurotoxicity is critical to understanding mechanisms of these diseases and disorders and protecting public health.
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Affiliation(s)
- Deborah A Cory-Slechta
- Department of Environmental Medicine, University of Rochester School of Medicine, Rochester, New York, USA;
| | - Alyssa Merrill
- Department of Environmental Medicine, University of Rochester School of Medicine, Rochester, New York, USA;
| | - Marissa Sobolewski
- Department of Environmental Medicine, University of Rochester School of Medicine, Rochester, New York, USA;
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Yin S, Tian T, Wang C, Wang D, Pi X, Liu M, Jin L, Liu J, Wang L, Li Z, Ren A, Yin C. Prenatal uranium exposure and risk for fetal neural tube defects: A case-control study in women living in a rural area of northern China. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127466. [PMID: 34653865 DOI: 10.1016/j.jhazmat.2021.127466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 09/11/2021] [Accepted: 10/06/2021] [Indexed: 06/13/2023]
Abstract
The adverse effects of uranium exposure on human health are well-known; less is known, however, regarding its association with congenital malformations. We conducted a case-control study to examine the association between prenatal exposure to uranium and risk for fetal neural tube defects (NTDs) using the concentration of uranium in placental tissue as an exposure marker in 408 NTD cases and 593 healthy controls. Uranium concentration was quantified with an inductively coupled plasma mass spectrometer. The odds ratios of NTDs for uranium exposure levels, categorized into quartiles, were estimated using logistic regression. The median concentration of uranium in the NTD group (0.409 ng/g) was significantly higher than that in the control group (0.218 ng/g). The risk for NTDs increased 2.52-fold (95% CI, 1.85-3.45) for concentrations of uranium above the median value for all participants. After adjusting for confounders, the risk for NTDs increased 1.36-fold (95% CI, 1.25-6.17), 1.77-fold (95% CI, 1.09-2.85), and 3.60-fold (95% CI, 2.30-5.64) for the second, third, and fourth quartiles of uranium concentrations compared to the lowest quartile, respectively. Prenatal exposure to uranium is a risk factor for NTDs in this population. Prospective studies are needed to further validate this finding.
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Affiliation(s)
- Shengju Yin
- Institute of Reproductive and Child Health/National Health Commission Key Laboratory of Reproductive Health, Peking University, Beijing, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China; Department of Pharmacology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Tian Tian
- Institute of Reproductive and Child Health/National Health Commission Key Laboratory of Reproductive Health, Peking University, Beijing, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China; Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital; National Clinical Research Center for Obstetrics and Gynecology (Peking University Third Hospital); Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology (Peking University Third Hospital), Beijing, China
| | - Chengrong Wang
- Institute of Reproductive and Child Health/National Health Commission Key Laboratory of Reproductive Health, Peking University, Beijing, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China; Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Di Wang
- Institute of Reproductive and Child Health/National Health Commission Key Laboratory of Reproductive Health, Peking University, Beijing, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Xin Pi
- Institute of Reproductive and Child Health/National Health Commission Key Laboratory of Reproductive Health, Peking University, Beijing, China; Department of Social Medicine and Health Education, School of Public Health, Peking University, Beijing, China
| | - Mengyuan Liu
- Institute of Reproductive and Child Health/National Health Commission Key Laboratory of Reproductive Health, Peking University, Beijing, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Lei Jin
- Institute of Reproductive and Child Health/National Health Commission Key Laboratory of Reproductive Health, Peking University, Beijing, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Jufen Liu
- Institute of Reproductive and Child Health/National Health Commission Key Laboratory of Reproductive Health, Peking University, Beijing, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Linlin Wang
- Institute of Reproductive and Child Health/National Health Commission Key Laboratory of Reproductive Health, Peking University, Beijing, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Zhiwen Li
- Institute of Reproductive and Child Health/National Health Commission Key Laboratory of Reproductive Health, Peking University, Beijing, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Aiguo Ren
- Institute of Reproductive and Child Health/National Health Commission Key Laboratory of Reproductive Health, Peking University, Beijing, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China.
| | - Chenghong Yin
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China.
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Tournier BB, Ibanez C, Tourlonias E, Petitot F, Paquet F, Dublineau I, Lestaevel P. Brain accumulation of inhaled uranium in the rat depends on aerosol concentration, exposure repetitions, particle size and solubility. Toxicol Lett 2021; 351:10-17. [PMID: 34363895 DOI: 10.1016/j.toxlet.2021.08.002] [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: 04/01/2021] [Revised: 07/02/2021] [Accepted: 08/03/2021] [Indexed: 10/20/2022]
Abstract
A rostro-caudal gradient of uranium (U) in the brain has been suggested after its inhalation. To study the factors influencing this mapping, we first used 30-min acute inhalation at 56 mg/m3 of the relatively soluble form UO4 in the rat. These exposure parameters were then used as a reference in comparison with the other experimental conditions. Other groups received acute inhalation at different concentrations, repeated low dose inhalation of UO4 (10 exposures) or acute low dose inhalation of the insoluble form UO2. At 24 h after the last exposure, all rats showed a brain U accumulation with a rostro-caudal gradient as compared to controls. However, the total concentration to the brain was greater after repeated exposure than acute exposure, demonstrating an accumulative effect. In comparison with the low dose soluble U exposure, a higher accumulation in the front of the brain was observed after exposure to higher dose, to insoluble particles and following repetition of exposures, thus demonstrating a dose effect and influences of solubility and repetition of exposures. In the last part, exposure to ultrafine U particles made it possible to show 24 h after exposure the presence of U in the brain according to a rostro-caudal gradient. Finally, the time-course after exposure to micronic or nanometric U particles has revealed greater residence times for nanoparticles.
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Affiliation(s)
- Benjamin B Tournier
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-SANTE, SESANE, Laboratoire de Radiotoxicologie et Radiobiologie Expérimentale, 92262, Fontenay-aux-Roses, France; Division of Adult Psychiatry, Department of Psychiatry, University Hospitals of Geneva, Switzerland
| | - Chrystelle Ibanez
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-SANTE, SESANE, Laboratoire de Radiotoxicologie et Radiobiologie Expérimentale, 92262, Fontenay-aux-Roses, France
| | - Elie Tourlonias
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-SANTE, SESANE, Laboratoire de Radiotoxicologie et Radiobiologie Expérimentale, 92262, Fontenay-aux-Roses, France; Nucléagis SAS, 63480, Vertolaye, France
| | - Fabrice Petitot
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-SANTE, SESANE, Laboratoire de Radiotoxicologie et Radiobiologie Expérimentale, 92262, Fontenay-aux-Roses, France; CEA, DEN, DUSP, Service de Protection contre les Rayonnements, 30207, Bagnols sur Cèze Cedex, France
| | - François Paquet
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-SANTE, SESANE, Laboratoire de Radiotoxicologie et Radiobiologie Expérimentale, 92262, Fontenay-aux-Roses, France; Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV, SRTE, 13115, Saint Paul-lez-Durance, Cedex, France
| | - Isabelle Dublineau
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-SANTE, SESANE, Laboratoire de Radiotoxicologie et Radiobiologie Expérimentale, 92262, Fontenay-aux-Roses, France; Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV, SEDRE, Unité d'expertise des sites et des déchets radioactifs, 92262, Fontenay-aux-Roses, France
| | - Philippe Lestaevel
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-SANTE, SESANE, Laboratoire de Radiotoxicologie et Radiobiologie Expérimentale, 92262, Fontenay-aux-Roses, France; Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-SANTE, SER, Bureau d'Analyse et de Suivi des Expositions Professionnelles, 92262, Fontenay-aux-Roses, France.
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Haghani A, Morgan TE, Forman HJ, Finch CE. Air Pollution Neurotoxicity in the Adult Brain: Emerging Concepts from Experimental Findings. J Alzheimers Dis 2021; 76:773-797. [PMID: 32538853 DOI: 10.3233/jad-200377] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Epidemiological studies are associating elevated exposure to air pollution with increased risk of Alzheimer's disease and other neurodegenerative disorders. In effect, air pollution accelerates many aging conditions that promote cognitive declines of aging. The underlying mechanisms and scale of effects remain largely unknown due to its chemical and physical complexity. Moreover, individual responses to air pollution are shaped by an intricate interface of pollutant mixture with the biological features of the exposed individual such as age, sex, genetic background, underlying diseases, and nutrition, but also other environmental factors including exposure to cigarette smoke. Resolving this complex manifold requires more detailed environmental and lifestyle data on diverse populations, and a systematic experimental approach. Our review aims to summarize the modest existing literature on experimental studies on air pollution neurotoxicity for adult rodents and identify key gaps and emerging challenges as we go forward. It is timely for experimental biologists to critically understand prior findings and develop innovative approaches to this urgent global problem. We hope to increase recognition of the importance of air pollution on brain aging by our colleagues in the neurosciences and in biomedical gerontology, and to support the immediate translation of the findings into public health guidelines for the regulation of remedial environmental factors that accelerate aging processes.
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Affiliation(s)
- Amin Haghani
- Leonard Davis School of Gerontology, USC, Los Angeles, CA, USA
| | - Todd E Morgan
- Leonard Davis School of Gerontology, USC, Los Angeles, CA, USA
| | | | - Caleb E Finch
- Leonard Davis School of Gerontology, USC, Los Angeles, CA, USA.,Dornsife College, University of Southern California, Los Angeles, CA, USA
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Ma M, Wang R, Xu L, Xu M, Liu S. Emerging health risks and underlying toxicological mechanisms of uranium contamination: Lessons from the past two decades. ENVIRONMENT INTERNATIONAL 2020; 145:106107. [PMID: 32932066 DOI: 10.1016/j.envint.2020.106107] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 08/28/2020] [Accepted: 08/30/2020] [Indexed: 06/11/2023]
Abstract
Uranium contamination is a global health concern. Regarding natural or anthropogenic uranium contamination, the major sources of concern are groundwater, mining, phosphate fertilizers, nuclear facilities, and military activities. Many epidemiological and laboratory studies have demonstrated that environmental and occupational uranium exposure can induce multifarious health problems. Uranium exposure may cause health risks because of its chemotoxicity and radiotoxicity in natural or anthropogenic scenarios: the former is generally thought to play a more significant role with regard to the natural uranium exposure, and the latter is more relevant to enriched uranium exposure. The understanding of the health risks and underlying toxicological mechanisms of uranium remains at a preliminary stage, and many controversial findings require further research. In order to present state-of-the-art status in this field, this review will primarily focus on the chemotoxicity of uranium, rather than its radiotoxicity, as well as the involved toxicological mechanisms. First, the natural or anthropogenic uranium contamination scenarios will be briefly summarized. Second, the health risks upon natural uranium exposure, for example, nephrotoxicity, bone toxicity, reproductive toxicity, hepatotoxicity, neurotoxicity, and pulmonary toxicity, will be discussed based on the reported epidemiological cases and laboratory studies. Third, the recent advances regarding the toxicological mechanisms of uranium-induced chemotoxicity will be highlighted, including oxidative stress, genetic damage, protein impairment, inflammation, and metabolic disorder. Finally, the gaps and challenges in the knowledge of uranium-induced chemotoxicity and underlying mechanisms will be discussed.
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Affiliation(s)
- Minghao Ma
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruixia Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lining Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ming Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Sijin Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
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Air Pollution-Related Brain Metal Dyshomeostasis as a Potential Risk Factor for Neurodevelopmental Disorders and Neurodegenerative Diseases. ATMOSPHERE 2020. [DOI: 10.3390/atmos11101098] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Increasing evidence links air pollution (AP) exposure to effects on the central nervous system structure and function. Particulate matter AP, especially the ultrafine (nanoparticle) components, can carry numerous metal and trace element contaminants that can reach the brain in utero and after birth. Excess brain exposure to either essential or non-essential elements can result in brain dyshomeostasis, which has been implicated in both neurodevelopmental disorders (NDDs; autism spectrum disorder, schizophrenia, and attention deficit hyperactivity disorder) and neurodegenerative diseases (NDGDs; Alzheimer’s disease, Parkinson’s disease, multiple sclerosis, and amyotrophic lateral sclerosis). This review summarizes the current understanding of the extent to which the inhalational or intranasal instillation of metals reproduces in vivo the shared features of NDDs and NDGDs, including enlarged lateral ventricles, alterations in myelination, glutamatergic dysfunction, neuronal cell death, inflammation, microglial activation, oxidative stress, mitochondrial dysfunction, altered social behaviors, cognitive dysfunction, and impulsivity. Although evidence is limited to date, neuronal cell death, oxidative stress, and mitochondrial dysfunction are reproduced by numerous metals. Understanding the specific contribution of metals/trace elements to this neurotoxicity can guide the development of more realistic animal exposure models of human AP exposure and consequently lead to a more meaningful approach to mechanistic studies, potential intervention strategies, and regulatory requirements.
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Ran Y, Wang S, Zhao Y, Li J, Ran X, Hao Y. A review of biological effects and treatments of inhaled depleted uranium aerosol. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2020; 222:106357. [PMID: 32755761 DOI: 10.1016/j.jenvrad.2020.106357] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 07/05/2020] [Accepted: 07/09/2020] [Indexed: 06/11/2023]
Abstract
Depleted uranium (DU) is primarily used for DU bombs and DU tanks in the military. Aerosol inhalation is considered the primary route of DU exposure. Although laboratory tests have confirmed that inhalation of DU aerosol can cause lung, kidney, and other organ damage, epidemiological studies have found no conclusive evidence that persons in areas with prolonged exposure to DU-containing bombs are affected. After the body inhaled DU aerosols, we first clear the insoluble DU through whole-lung lavage (WLL). Then we eliminate the soluble uranium by the chelating agent. Besides, reducing DU damage to tissues and cells through drugs is also an important treatment method. In future research, emphasis should be placed on the damage mechanism of DU aerosol, the laboratory and clinical research of DU chelating agents, the research on the combination of DU chelating agent and WLL, and the research and development of new drugs to prevent DU damage.
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Affiliation(s)
- Yonghong Ran
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, No.30 Gaotanyan Street, Shapingba District, Chongqing, 400038, China
| | - Shuang Wang
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, No.30 Gaotanyan Street, Shapingba District, Chongqing, 400038, China
| | - Yazhen Zhao
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, No.30 Gaotanyan Street, Shapingba District, Chongqing, 400038, China
| | - Juan Li
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, No.30 Gaotanyan Street, Shapingba District, Chongqing, 400038, China
| | - Xinze Ran
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, No.30 Gaotanyan Street, Shapingba District, Chongqing, 400038, China
| | - Yuhui Hao
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, No.30 Gaotanyan Street, Shapingba District, Chongqing, 400038, China.
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11
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Collett G, Craenen K, Young W, Gilhooly M, Anderson RM. The psychological consequences of (perceived) ionizing radiation exposure: a review on its role in radiation-induced cognitive dysfunction. Int J Radiat Biol 2020; 96:1104-1118. [PMID: 32716221 DOI: 10.1080/09553002.2020.1793017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
PURPOSE Exposure to ionizing radiation following environmental contamination (e.g., the Chernobyl and Fukushima nuclear accidents), radiotherapy and diagnostics, occupational roles and space travel has been identified as a possible risk-factor for cognitive dysfunction. The deleterious effects of high doses (≥1.0 Gy) on cognitive functioning are fairly well-understood, while the consequences of low (≤0.1 Gy) and moderate doses (0.1-1.0 Gy) have been receiving more research interest over the past decade. In addition to any impact of actual exposure on cognitive functioning, the persistent psychological stress arising from perceived exposure, particularly following nuclear accidents, may itself impact cognitive functioning. In this review we offer a novel interdisciplinary stance on the cognitive impact of radiation exposure, considering psychological and epidemiological observations of different exposure scenarios such as atomic bombings, nuclear accidents, occupational and medical exposures while accounting for differences in dose, rate of exposure and exposure type. The purpose is to address the question that perceived radiation exposure - even where the actual absorbed dose is 0.0 Gy above background dose - can result in psychological stress, which could in turn lead to cognitive dysfunction. In addition, we highlight the interplay between the mechanisms of perceived exposure (i.e., stress) and actual exposure (i.e., radiation-induced cellular damage), in the generation of radiation-induced cognitive dysfunction. In all, we offer a comprehensive and objective review addressing the potential for cognitive defects in the context of low- and moderate-dose IR exposures. CONCLUSIONS Overall the evidence shows prenatal exposure to low and moderate doses to be detrimental to brain development and subsequent cognitive functioning, however the evidence for adolescent and adult low- and moderate-dose exposure remains uncertain. The persistent psychological stress following accidental exposure to low-doses in adulthood may pose a greater threat to our cognitive functioning. Indeed, the psychological implications for instructed cohorts (e.g., astronauts and radiotherapy patients) is less clear and warrants further investigation. Nonetheless, the psychosocial consequences of low- and moderate-dose exposure must be carefully considered when evaluating radiation effects on cognitive functioning, and to avoid unnecessary harm when planning public health response strategies.
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Affiliation(s)
- George Collett
- Centre for Health Effects of Radiological and Chemical Agents, Institute of Environment, Health and Societies, College of Health and Life Sciences, Brunel University London, Uxbridge, UK
| | - Kai Craenen
- Centre for Health Effects of Radiological and Chemical Agents, Institute of Environment, Health and Societies, College of Health and Life Sciences, Brunel University London, Uxbridge, UK
| | - William Young
- Centre for Health Effects of Radiological and Chemical Agents, Institute of Environment, Health and Societies, College of Health and Life Sciences, Brunel University London, Uxbridge, UK
| | - Mary Gilhooly
- Centre for Health Effects of Radiological and Chemical Agents, Institute of Environment, Health and Societies, College of Health and Life Sciences, Brunel University London, Uxbridge, UK
| | - Rhona M Anderson
- Centre for Health Effects of Radiological and Chemical Agents, Institute of Environment, Health and Societies, College of Health and Life Sciences, Brunel University London, Uxbridge, UK
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12
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Neurotoxicity of nanoparticles entering the brain via sensory nerve-to-brain pathways: injuries and mechanisms. Arch Toxicol 2020; 94:1479-1495. [DOI: 10.1007/s00204-020-02701-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 03/05/2020] [Indexed: 12/15/2022]
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13
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Cory-Slechta DA, Sobolewski M, Marvin E, Conrad K, Merrill A, Anderson T, Jackson BP, Oberdorster G. The Impact of Inhaled Ambient Ultrafine Particulate Matter on Developing Brain: Potential Importance of Elemental Contaminants. Toxicol Pathol 2019; 47:976-992. [PMID: 31610749 DOI: 10.1177/0192623319878400] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Epidemiological studies report associations between air pollution (AP) exposures and several neurodevelopmental disorders including autism, attention deficit disorder, and cognitive delays. Our studies in mice of postnatal (human third trimester brain equivalent) exposures to concentrated ambient ultrafine particles (CAPs) provide biological plausibility for these associations, producing numerous neuropathological and behavioral features of these disorders, including male-biased vulnerability. These findings raise questions about the specific components of AP that underlie its neurotoxicity, which our studies suggest could involve trace elements as candidate neurotoxicants. X-ray fluorescence analyses of CAP chamber filters confirm contamination of AP exposures by multiple elements, including iron (Fe) and sulfur (S). Correspondingly, laser ablation inductively coupled plasma mass spectrometry of brains of male mice indicates marked postexposure elevations of Fe and S and other elements. Elevations of brain Fe and S in particular are consistent with potential ferroptotic, oxidative stress, and altered antioxidant capacity-based mechanisms of CAPs-induced neurotoxicity, supported by observations of increased serum oxidized glutathione and increased neuronal cell death in nucleus accumbens with no corresponding significant increase in caspase-3, in male brains following postnatal CAP exposures. Understanding the role of trace element contaminants of particulate matter AP as a source of neurotoxicity is critical for public health protection.
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Affiliation(s)
| | - Marissa Sobolewski
- Department of Environmental Medicine, University of Rochester Medical Center, NY, USA
| | - Elena Marvin
- Department of Environmental Medicine, University of Rochester Medical Center, NY, USA
| | - Katherine Conrad
- Department of Environmental Medicine, University of Rochester Medical Center, NY, USA
| | - Alyssa Merrill
- Department of Environmental Medicine, University of Rochester Medical Center, NY, USA
| | - Tim Anderson
- Department of Environmental Medicine, University of Rochester Medical Center, NY, USA
| | - Brian P Jackson
- Department of Earth Sciences, Dartmouth College, Hanover, NH, USA
| | - Gunter Oberdorster
- Department of Environmental Medicine, University of Rochester Medical Center, NY, USA
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14
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Ibanez C, Suhard D, Elie C, Ebrahimian T, Lestaevel P, Roynette A, Dhieux-Lestaevel B, Gensdarmes F, Tack K, Tessier C. Evaluation of the Nose-to-Brain Transport of Different Physicochemical Forms of Uranium after Exposure via Inhalation of a UO4 Aerosol in the Rat. ENVIRONMENTAL HEALTH PERSPECTIVES 2019; 127:97010. [PMID: 31566443 PMCID: PMC6791583 DOI: 10.1289/ehp4927] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
BACKGROUND Health-risk issues are raised concerning inhalation of particulate pollutants that are thought to have potential hazardous effects on the central nervous system. The brain is presented as a direct target of particulate matter (PM) exposure because of the nose-to-brain pathway involvement. The main cause of contamination in nuclear occupational activities is related to exposure to aerosols containing radionuclides, particularly uranium dust. It has been previously demonstrated that instilled solubilized uranium in the rat nasal cavity is conveyed to the brain via the olfactory nerve. OBJECTIVE The aim of this study was to analyze the anatomical localization of uranium compounds in the olfactory system after in vivo exposure to a polydisperse aerosol of uranium tetraoxide (UO4) particles. METHODS The olfactory neuroepithelium (OE) and selected brain structures-olfactory bulbs (OB), frontal cortex (FC), hippocampus (HIP), cerebellum (Cer), and brainstem (BS)-were microdissected 4 h after aerosol inhalation via a nose-only system in adult rats. Tissues were subjected to complementary analytical techniques. RESULTS Uranium concentrations measured by inductively coupled plasma mass spectrometry (ICP-MS) were significantly higher in all brain structures from exposed animals compared with their respective controls. We observed that cerebral uranium concentrations followed an anteroposterior gradient with typical accumulation in the OB, characteristic of a direct olfactory transfer of inhaled compounds. Secondary ion mass spectrometry (SIMS) microscopy and transmission electron microscopy coupled with energy-dispersive X-ray spectroscopy (TEM-EDX) were used in order to track elemental uranium in situ in the olfactory epithelium. Elemental uranium was detected in precise anatomical regions: olfactory neuron dendrites, paracellular junctions of neuroepithelial cells, and olfactory nerve tracts (around axons and endoneural spaces). CONCLUSION These neuroanatomical observations in a rat model are consistent with the transport of elemental uranium in different physicochemical forms (solubilized, nanoparticles) along olfactory nerve bundles after inhalation of UO4 microparticles. This work contributes to knowledge of the mechanistic actions of particulate pollutants on the brain. https://doi.org/10.1289/EHP4927.
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Affiliation(s)
- Chrystelle Ibanez
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Laboratoire de Radiotoxicologie et Radiobiologie Expérimentale, Fontenay aux Roses, France
| | - David Suhard
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Laboratoire de Recherche en Radiochimie, Spéciation et Imagerie, Fontenay aux Roses, France
| | - Christelle Elie
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Laboratoire de Radiotoxicologie et Radiobiologie Expérimentale, Fontenay aux Roses, France
| | - Teni Ebrahimian
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Laboratoire de Radiotoxicologie et Radiobiologie Expérimentale, Fontenay aux Roses, France
| | - Philippe Lestaevel
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Laboratoire de Radiotoxicologie et Radiobiologie Expérimentale, Fontenay aux Roses, France
| | - Audrey Roynette
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle de Sûreté des Installations et des Systèmes Nucléaire, Service du Confinement et de l’Aérodispersion des Polluants, Laboratoire de Physique et de Métrologie des Aérosols, Gif-sur-Yvette, France
| | - Bernadette Dhieux-Lestaevel
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle de Sûreté des Installations et des Systèmes Nucléaire, Service du Confinement et de l’Aérodispersion des Polluants, Laboratoire de Physique et de Métrologie des Aérosols, Gif-sur-Yvette, France
| | - François Gensdarmes
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle de Sûreté des Installations et des Systèmes Nucléaire, Service du Confinement et de l’Aérodispersion des Polluants, Laboratoire de Physique et de Métrologie des Aérosols, Gif-sur-Yvette, France
| | - Karine Tack
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, Service de recherche sur les effets biologiques et sanitaires des rayonnements ionisants, Laboratoire de Radiotoxicologie et Radiobiologie Expérimentale, Fontenay aux Roses, France
| | - Christine Tessier
- Institut de Radioprotection et de Sûreté Nucléaire, Fontenay aux Roses, France
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15
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Bencsik A, Lestaevel P, Guseva Canu I. Nano- and neurotoxicology: An emerging discipline. Prog Neurobiol 2018; 160:45-63. [DOI: 10.1016/j.pneurobio.2017.10.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 09/10/2017] [Accepted: 10/20/2017] [Indexed: 12/12/2022]
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16
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Chalansonnet M, Carabin N, Boucard S, Merlen L, Melczer M, Antoine G, Devoy J, Remy A, Gagnaire F. Study of potential transfer of aluminum to the brain via the olfactory pathway. Toxicol Lett 2017; 283:77-85. [PMID: 29180288 DOI: 10.1016/j.toxlet.2017.11.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 11/22/2017] [Accepted: 11/23/2017] [Indexed: 11/17/2022]
Abstract
Many employees in the aluminum industry are exposed to a range of aluminum compounds by inhalation, and the presence of ultrafine particles in the workplace has become a concern to occupational health professionals. Some metal salts and metal oxides have been shown to enter the brain through the olfactory route, bypassing the blood-brain barrier, but few studies have examined whether aluminum compounds also use this pathway. In this context, we sought to determine whether aluminum was found in rat olfactory bulbs and whether its transfer depended on physicochemical characteristics such as solubility and granulometry. Aluminum salts (chloride and fluoride) and various nanometric aluminum oxides (13nm, 20nm and 40-50nm) were administered to rats by intranasal instillation through one nostril (10μg Al/30μL for 10days). Olfactory bulbs (ipsilateral and contralateral relative to instilled nostril) were harvested and the aluminum content was determined by graphite furnace atomic absorption spectrometry after tissue mineralization. Some transfer of aluminum salts to the central nervous system via the olfactory route was observed, with the more soluble aluminum chloride being transferred at higher levels than aluminum fluoride. No cerebral translocation of any of the aluminas studied was detected.
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Affiliation(s)
- Monique Chalansonnet
- INRS, Département Toxicologie et Biométrologie, Rue du Morvan, CS 60027, F-54519, Vandœuvre-lès-Nancy, France.
| | - Nathalie Carabin
- INRS, Département Toxicologie et Biométrologie, Rue du Morvan, CS 60027, F-54519, Vandœuvre-lès-Nancy, France
| | - Stéphane Boucard
- INRS, Département Toxicologie et Biométrologie, Rue du Morvan, CS 60027, F-54519, Vandœuvre-lès-Nancy, France
| | - Lise Merlen
- INRS, Département Toxicologie et Biométrologie, Rue du Morvan, CS 60027, F-54519, Vandœuvre-lès-Nancy, France
| | - Mathieu Melczer
- INRS, Département Toxicologie et Biométrologie, Rue du Morvan, CS 60027, F-54519, Vandœuvre-lès-Nancy, France
| | - Guillaume Antoine
- INRS, Département Toxicologie et Biométrologie, Rue du Morvan, CS 60027, F-54519, Vandœuvre-lès-Nancy, France
| | - Jérôme Devoy
- INRS, Département Toxicologie et Biométrologie, Rue du Morvan, CS 60027, F-54519, Vandœuvre-lès-Nancy, France
| | - Aurélie Remy
- INRS, Département Toxicologie et Biométrologie, Rue du Morvan, CS 60027, F-54519, Vandœuvre-lès-Nancy, France
| | - François Gagnaire
- INRS, Département Toxicologie et Biométrologie, Rue du Morvan, CS 60027, F-54519, Vandœuvre-lès-Nancy, France
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17
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Guéguen Y, Roy L, Hornhardt S, Badie C, Hall J, Baatout S, Pernot E, Tomasek L, Laurent O, Ebrahimian T, Ibanez C, Grison S, Kabacik S, Laurier D, Gomolka M. Biomarkers for Uranium Risk Assessment for the Development of the CURE (Concerted Uranium Research in Europe) Molecular Epidemiological Protocol. Radiat Res 2017; 187:107-127. [DOI: 10.1667/rr14505.1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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18
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de Pedro-Cuesta J, Martínez-Martín P, Rábano A, Ruiz-Tovar M, Alcalde-Cabero E, Calero M. Etiologic Framework for the Study of Neurodegenerative Disorders as Well as Vascular and Metabolic Comorbidities on the Grounds of Shared Epidemiologic and Biologic Features. Front Aging Neurosci 2016; 8:138. [PMID: 27378910 PMCID: PMC4904010 DOI: 10.3389/fnagi.2016.00138] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 05/27/2016] [Indexed: 12/12/2022] Open
Abstract
Background: During the last two decades, protein aggregation at all organismal levels, from viruses to humans, has emerged from a neglected area of protein science to become a central issue in biology and biomedicine. This article constitutes a risk-based review aimed at supporting an etiologic scenario of selected, sporadic, protein-associated, i.e., conformational, neurodegenerative disorders (NDDs), and their vascular- and metabolic-associated ailments. Methods: A rationale is adopted, to incorporate selected clinical data and results from animal-model research, complementing epidemiologic evidences reported in two prior articles. Findings: Theory is formulated assuming an underlying conformational transmission mechanism, mediated either by horizontal transfer of mammalian genes coding for specific aggregation-prone proteins, or by xeno-templating between bacterial and host proteins. We build a few population-based and experimentally-testable hypotheses focusing on: (1) non-disposable surgical instruments for sporadic Creutzfeldt-Jakob disease (sCJD) and other rapid progressive neurodegenerative dementia (sRPNDd), multiple system atrophy (MSA), and motor neuron disease (MND); and (2) specific bacterial infections such as B. pertussis and E. coli for all forms, but particularly for late-life sporadic conformational, NDDs, type 2 diabetes mellitus (T2DM), and atherosclerosis where natural protein fibrils present in such organisms as a result of adaptation to the human host induce prion-like mechanisms. Conclusion: Implications for cohort alignment and experimental animal research are discussed and research lines proposed.
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Affiliation(s)
- Jesús de Pedro-Cuesta
- Department of Applied Epidemiology, National Center for Epidemiology, Carlos III Institute of HealthMadrid, Spain; Consortium for Biomedical Research in Neurodegenerative Diseases (CIBERNED), National Institute of Health Carlos IIIMadrid, Spain
| | - Pablo Martínez-Martín
- Department of Applied Epidemiology, National Center for Epidemiology, Carlos III Institute of HealthMadrid, Spain; Consortium for Biomedical Research in Neurodegenerative Diseases (CIBERNED), National Institute of Health Carlos IIIMadrid, Spain
| | - Alberto Rábano
- Alzheimer Disease Research Unit, CIEN Foundation, Queen Sofia Foundation Alzheimer Center Madrid, Spain
| | - María Ruiz-Tovar
- Department of Applied Epidemiology, National Center for Epidemiology, Carlos III Institute of HealthMadrid, Spain; Consortium for Biomedical Research in Neurodegenerative Diseases (CIBERNED), National Institute of Health Carlos IIIMadrid, Spain
| | - Enrique Alcalde-Cabero
- Department of Applied Epidemiology, National Center for Epidemiology, Carlos III Institute of HealthMadrid, Spain; Consortium for Biomedical Research in Neurodegenerative Diseases (CIBERNED), National Institute of Health Carlos IIIMadrid, Spain
| | - Miguel Calero
- Consortium for Biomedical Research in Neurodegenerative Diseases (CIBERNED), National Institute of Health Carlos IIIMadrid, Spain; Alzheimer Disease Research Unit, CIEN Foundation, Queen Sofia Foundation Alzheimer CenterMadrid, Spain; Chronic Disease Programme, Carlos III Institute of Health, MajadahondaMadrid, Spain
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19
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Laurent O, Gomolka M, Haylock R, Blanchardon E, Giussani A, Atkinson W, Baatout S, Bingham D, Cardis E, Hall J, Tomasek L, Ancelet S, Badie C, Bethel G, Bertho JM, Bouet S, Bull R, Challeton-de Vathaire C, Cockerill R, Davesne E, Ebrahimian T, Engels H, Gillies M, Grellier J, Grison S, Gueguen Y, Hornhardt S, Ibanez C, Kabacik S, Kotik L, Kreuzer M, Lebacq AL, Marsh J, Nosske D, O'Hagan J, Pernot E, Puncher M, Rage E, Riddell T, Roy L, Samson E, Souidi M, Turner MC, Zhivin S, Laurier D. Concerted Uranium Research in Europe (CURE): toward a collaborative project integrating dosimetry, epidemiology and radiobiology to study the effects of occupational uranium exposure. JOURNAL OF RADIOLOGICAL PROTECTION : OFFICIAL JOURNAL OF THE SOCIETY FOR RADIOLOGICAL PROTECTION 2016; 36:319-345. [PMID: 27183135 DOI: 10.1088/0952-4746/36/2/319] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The potential health impacts of chronic exposures to uranium, as they occur in occupational settings, are not well characterized. Most epidemiological studies have been limited by small sample sizes, and a lack of harmonization of methods used to quantify radiation doses resulting from uranium exposure. Experimental studies have shown that uranium has biological effects, but their implications for human health are not clear. New studies that would combine the strengths of large, well-designed epidemiological datasets with those of state-of-the-art biological methods would help improve the characterization of the biological and health effects of occupational uranium exposure. The aim of the European Commission concerted action CURE (Concerted Uranium Research in Europe) was to develop protocols for such a future collaborative research project, in which dosimetry, epidemiology and biology would be integrated to better characterize the effects of occupational uranium exposure. These protocols were developed from existing European cohorts of workers exposed to uranium together with expertise in epidemiology, biology and dosimetry of CURE partner institutions. The preparatory work of CURE should allow a large scale collaborative project to be launched, in order to better characterize the effects of uranium exposure and more generally of alpha particles and low doses of ionizing radiation.
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Affiliation(s)
- Olivier Laurent
- Institute for Radiological Protection and Nuclear Safety (IRSN), Fontenay aux Roses, France
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Dinocourt C, Legrand M, Dublineau I, Lestaevel P. The neurotoxicology of uranium. Toxicology 2015; 337:58-71. [PMID: 26277741 DOI: 10.1016/j.tox.2015.08.004] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 08/05/2015] [Accepted: 08/11/2015] [Indexed: 11/26/2022]
Abstract
The brain is a target of environmental toxic pollutants that impair cerebral functions. Uranium is present in the environment as a result of natural deposits and release by human applications. The first part of this review describes the passage of uranium into the brain, and its effects on neurological functions and cognitive abilities. Very few human studies have looked at its cognitive effects. Experimental studies show that after exposure, uranium can reach the brain and lead to neurobehavioral impairments, including increased locomotor activity, perturbation of the sleep-wake cycle, decreased memory, and increased anxiety. The mechanisms underlying these neurobehavioral disturbances are not clearly understood. It is evident that there must be more than one toxic mechanism and that it might include different targets in the brain. In the second part, we therefore review the principal mechanisms that have been investigated in experimental models: imbalance of the anti/pro-oxidant system and neurochemical and neurophysiological pathways. Uranium effects are clearly specific according to brain area, dose, and time. Nonetheless, this review demonstrates the paucity of data about its effects on developmental processes and the need for more attention to the consequences of exposure during development.
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Affiliation(s)
- Céline Dinocourt
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Pôle de la Radioprotection de l'Homme, Service de Radiobiologie et d'Epidémiologie, Laboratoire de Radiotoxicologie Expérimentale, BP 17, F-92262 Fontenay-aux-Roses, France.
| | - Marie Legrand
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Pôle de la Radioprotection de l'Homme, Service de Radiobiologie et d'Epidémiologie, Laboratoire de Radiotoxicologie Expérimentale, BP 17, F-92262 Fontenay-aux-Roses, France.
| | - Isabelle Dublineau
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Pôle de la Radioprotection de l'Homme, Service de Radiobiologie et d'Epidémiologie, Laboratoire de Radiotoxicologie Expérimentale, BP 17, F-92262 Fontenay-aux-Roses, France.
| | - Philippe Lestaevel
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Pôle de la Radioprotection de l'Homme, Service de Radiobiologie et d'Epidémiologie, Laboratoire de Radiotoxicologie Expérimentale, BP 17, F-92262 Fontenay-aux-Roses, France.
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