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Sauzéat L, Eychenne J, Gurioli L, Boyet M, Jessop DE, Moretti R, Monrose M, Holota H, Beaudoin C, Volle DH. Metallome deregulation and health-related impacts due to long-term exposure to recent volcanic ash deposits: New chemical and isotopic insights. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 829:154383. [PMID: 35276143 DOI: 10.1016/j.scitotenv.2022.154383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 02/09/2022] [Accepted: 03/03/2022] [Indexed: 06/14/2023]
Abstract
Volcanic ash exposure can lead to significant health risks. Damage to the respiratory and pulmonary systems are the most evident toxic side effects although the causes of these symptoms remain unclear. Conversely, the effects on other organs remain largely under-explored, limiting our understanding of the long-term volcanic ash-related risk at the whole-body scale. The metallome i.e. metal concentrations and isotopic compositions within the body, is suspected to be affected by volcanic ash exposure, having thus the potential for capturing some specificities of ash toxicity. However, the means by and extent to which the metallome is affected at the entire body scale and how the consequent chemical and isotopic deregulations correlate with pathophysiological dysfunctions are currently poorly understood. Here, we adopt a transdisciplinary approach combining high precision chemical analyses (major and trace element concentrations) and CuZn isotope measurements in seven organs and two biological fluids of isogenic mice (C57BL/6) exposed to eruption products from La Soufrière de Guadeloupe (Eastern Carribean), in tandem with biological parameters including physiological and morphological data. Based on principal component analysis, we show that after one month of exposure to volcanic ash deposits, the mice metallome; originally organ-specific and isotopically-typified, is highly disrupted as shown for example by heavy metal accumulation in testis (e.g., Fe, Zn) and Cu, Zn isotopic divergence in liver, intestine and blood. These metallomic variations are correlated with early testicular defects and might reflect the warning signs of premature (entero)hepatic impairments that may seriously affect fertility and favor the emergence of liver diseases after prolonged exposure. Monitoring the temporal evolution of the Cu and Zn isotope compositions seems to be a promising technique to identify the main biological processes and vital functions that are vulnerable to environmental volcanogenic pollutants although this will require further validation on human subjects.
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Affiliation(s)
- Lucie Sauzéat
- Université Clermont Auvergne, CNRS, IRD, OPGC, Laboratoire Magmas et Volcans, F-63000 Clermont-Ferrand, France; Université Clermont Auvergne, CNRS, INSERM, Institut Génétique, Reproduction et Développement, F-63000 Clermont-Ferrand, France.
| | - Julia Eychenne
- Université Clermont Auvergne, CNRS, IRD, OPGC, Laboratoire Magmas et Volcans, F-63000 Clermont-Ferrand, France; Université Clermont Auvergne, CNRS, INSERM, Institut Génétique, Reproduction et Développement, F-63000 Clermont-Ferrand, France
| | - Lucia Gurioli
- Université Clermont Auvergne, CNRS, IRD, OPGC, Laboratoire Magmas et Volcans, F-63000 Clermont-Ferrand, France; Université de Paris, Institut de physique du globe de Paris, CNRS UMR 7154, F-75005 Paris, France; Observatoire volcanologique et sismologique de Guadeloupe, Institut de physique du globe de Paris, F-97113 Gourbeyre, France
| | - Maud Boyet
- Université Clermont Auvergne, CNRS, IRD, OPGC, Laboratoire Magmas et Volcans, F-63000 Clermont-Ferrand, France
| | - David E Jessop
- Université Clermont Auvergne, CNRS, IRD, OPGC, Laboratoire Magmas et Volcans, F-63000 Clermont-Ferrand, France; Université de Paris, Institut de physique du globe de Paris, CNRS UMR 7154, F-75005 Paris, France; Observatoire volcanologique et sismologique de Guadeloupe, Institut de physique du globe de Paris, F-97113 Gourbeyre, France
| | - Roberto Moretti
- Université de Paris, Institut de physique du globe de Paris, CNRS UMR 7154, F-75005 Paris, France; Observatoire volcanologique et sismologique de Guadeloupe, Institut de physique du globe de Paris, F-97113 Gourbeyre, France
| | - Mélusine Monrose
- Université Clermont Auvergne, CNRS, INSERM, Institut Génétique, Reproduction et Développement, F-63000 Clermont-Ferrand, France
| | - Hélène Holota
- Université Clermont Auvergne, CNRS, INSERM, Institut Génétique, Reproduction et Développement, F-63000 Clermont-Ferrand, France
| | - Claude Beaudoin
- Université Clermont Auvergne, CNRS, INSERM, Institut Génétique, Reproduction et Développement, F-63000 Clermont-Ferrand, France
| | - David H Volle
- Université Clermont Auvergne, CNRS, INSERM, Institut Génétique, Reproduction et Développement, F-63000 Clermont-Ferrand, France
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Navarro-Sempere A, García M, Rodrigues AS, Garcia PV, Camarinho R, Segovia Y. Occurrence of Volcanogenic Inorganic Mercury in Wild Mice Spinal Cord: Potential Health Implications. Biol Trace Elem Res 2022; 200:2838-2847. [PMID: 34415497 PMCID: PMC9132843 DOI: 10.1007/s12011-021-02890-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 08/13/2021] [Indexed: 11/25/2022]
Abstract
Mercury accumulation has been proposed as a toxic factor that causes neurodegenerative diseases. However, the hazardous health effects of gaseous elemental mercury exposure on the spinal cord in volcanic areas have not been reported previously in the literature. To evaluate the presence of volcanogenic inorganic mercury in the spinal cord, a study was carried out in São Miguel island (Azores, Portugal) by comparing the spinal cord of mice exposed chronically to an active volcanic environment (Furnas village) with individuals not exposed (Rabo de Peixe village), through the autometallographic silver enhancement histochemical method. Moreover, a morphometric and quantification analysis of the axons was carried out. Results exhibited mercury deposits at the lumbar level of the spinal cord in the specimens captured at the site with volcanic activity (Furnas village). A decrease in axon calibre and axonal atrophy was also observed in these specimens. Given that these are relevant hallmarks in the neurodegenerative pathologies, our results highlight the importance of the surveillance of the health of populations chronically exposed to active volcanic environments.
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Affiliation(s)
- A Navarro-Sempere
- Department of Biotechnology, Faculty of Science, University of Alicante, Apartado 99, 03080, Alicante, Spain
| | - M García
- Department of Biotechnology, Faculty of Science, University of Alicante, Apartado 99, 03080, Alicante, Spain
| | - A S Rodrigues
- Faculty of Sciences and Technology, University of the Azores, 9501-801, Ponta Delgada, Portugal
- IVAR, Research Institute for Volcanology and Risk Assessment, University of the Azores, 9501-801, Ponta Delgada, Portugal
| | - P V Garcia
- Faculty of Sciences and Technology, University of the Azores, 9501-801, Ponta Delgada, Portugal
- cE3c, Centre for Ecology, Evolution and Environmental Changes, and Azorean Biodiversity Group, University of the Azores, 9501-801, Ponta Delgada, Portugal
| | - R Camarinho
- Faculty of Sciences and Technology, University of the Azores, 9501-801, Ponta Delgada, Portugal
- IVAR, Research Institute for Volcanology and Risk Assessment, University of the Azores, 9501-801, Ponta Delgada, Portugal
| | - Y Segovia
- Department of Biotechnology, Faculty of Science, University of Alicante, Apartado 99, 03080, Alicante, Spain.
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The Health Hazards of Volcanoes: First Evidence of Neuroinflammation in the Hippocampus of Mice Exposed to Active Volcanic Surroundings. Mediators Inflamm 2021; 2021:5891095. [PMID: 34671225 PMCID: PMC8523235 DOI: 10.1155/2021/5891095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 09/22/2021] [Indexed: 11/26/2022] Open
Abstract
Neuroinflammation is a process related to the onset of neurodegenerative diseases; one of the hallmarks of this process is microglial reactivation and the secretion by these cells of proinflammatory cytokines such as TNFα. Numerous studies report the relationship between neuroinflammatory processes and exposure to anthropogenic air pollutants, but few refer to natural pollutants. Volcanoes are highly inhabited natural sources of environmental pollution that induce changes in the nervous system, such as reactive astrogliosis or the blood-brain barrier breakdown in exposed individuals; however, no neuroinflammatory event has been yet defined. To this purpose, we studied resting microglia, reactive microglia, and TNFα production in the brains of mice chronically exposed to an active volcanic environment on the island of São Miguel (Azores, Portugal). For the first time, we demonstrate a proliferation of microglial cells and an increase in reactive microglia, as well an increase in TNFα secretion, in the central nervous system of individuals exposed to volcanogenic pollutants.
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Navarro A, García M, Rodrigues AS, Garcia PV, Camarinho R, Segovia Y. Reactive astrogliosis in the dentate gyrus of mice exposed to active volcanic environments. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2021; 84:213-226. [PMID: 33283687 DOI: 10.1080/15287394.2020.1850381] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Air pollution has been associated with neuroinflammatory processes and is considered a risk factor for the development of neurodegenerative diseases. Volcanic environments are considered a natural source of air pollution. However, the effects of natural source air pollution on the central nervous system (CNS) have not been reported, despite the fact that up to 10% of the world's population lives near a historically active volcano. In order to assess the response of the CNS to such exposure, our study was conducted in the island of Sao Miguel (Azores, Portugal) in two different areas: Furnas, which is volcanically active one, and compared to Rabo de Peixe, a reference site without manifestations of active volcanism using Mus musculus as a bioindicator species. To evaluate the state of the astroglial population in the dentate gyrus in both samples, the number of astrocytes was determined using immunofluorescence methods (anti-GFAP and anti-GS). In addition, the astrocytic branches in that hippocampal area were examined. Our results showed an increase in GFAP+ astrocytes and a reduction in GS+ astrocytes in Furnas-exposed mice compared to animals from Rabo de Peixe. In addition, astrocytes in the dentate gyrus of chronically exposed animals exhibited longer branches compared to those residing at the reference site. Thus, reactive astrogliosis and astrocyte dysfunction are found in mice living in an active volcanic environment.
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Affiliation(s)
- A Navarro
- Department of Biotechnology, University of Alicante , Alicante, Spain
| | - M García
- Department of Biotechnology, University of Alicante , Alicante, Spain
| | - A S Rodrigues
- Faculty of Sciences and Technology, University of the Azores , Ponta Delgada, Portugal
- IVAR, Research Institute for Volcanology and Risk Assessment, University of the Azores , Ponta Delgada, Portugal
| | - P V Garcia
- Faculty of Sciences and Technology, University of the Azores , Ponta Delgada, Portugal
- cE3c, Centre for Ecology, Evolution and Environmental Changes, and Azorean Biodiversity Group, University of the Azores , Ponta Delgada, Portugal
| | - R Camarinho
- Faculty of Sciences and Technology, University of the Azores , Ponta Delgada, Portugal
- IVAR, Research Institute for Volcanology and Risk Assessment, University of the Azores , Ponta Delgada, Portugal
| | - Y Segovia
- Department of Biotechnology, University of Alicante , Alicante, Spain
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Navarro-Sempere A, Segovia Y, Rodrigues AS, Garcia PV, Camarinho R, García M. First record on mercury accumulation in mice brain living in active volcanic environments: a cytochemical approach. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2021; 43:171-183. [PMID: 32794111 DOI: 10.1007/s10653-020-00690-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 06/16/2020] [Indexed: 06/11/2023]
Abstract
The health effects of mercury vapor exposure on the brain in volcanic areas have not been previously addressed in the literature. However, 10% of the worldwide population inhabits in the vicinity of an active volcano, which are natural sources of elemental mercury emission. To evaluate the presence of mercury compounds in the brain after chronic exposure to volcanogenic mercury vapor, a histochemical study, using autometallographic silver, was carried out to compare the brain of mice chronically exposed to an active volcanic environment (Furnas village, Azores, Portugal) with those not exposed (Rabo de Peixe village, Azores, Portugal). Results demonstrated several mercury deposits in blood vessels, white matter and some cells of the hippocampus in the brain of chronically exposed mice. Our results highlight that chronic exposure to an active volcanic environment results in brain mercury accumulation, raising an alert regarding potential human health risks. These findings support the hypothesis that mercury exposure can be a risk factor in causing neurodegenerative diseases in the inhabitants of volcanically active areas.
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Affiliation(s)
- A Navarro-Sempere
- Department of Biotechnology, University of Alicante, Apartado 99, 03080, Alicante, Spain
| | - Y Segovia
- Department of Biotechnology, University of Alicante, Apartado 99, 03080, Alicante, Spain.
| | - A S Rodrigues
- Faculty of Sciences and Technology, University of the Azores, 9501-801, Ponta Delgada, Portugal
- IVAR, Research Institute for Volcanology and Risk Assessment, University of the Azores, 9501-801, Ponta Delgada, Portugal
| | - P V Garcia
- Faculty of Sciences and Technology, University of the Azores, 9501-801, Ponta Delgada, Portugal
- cE3c, Centre for Ecology, Evolution and Environmental Changes, and Azorean Biodiversity Group, University of the Azores, 9501-801, Ponta Delgada, Portugal
| | - R Camarinho
- Faculty of Sciences and Technology, University of the Azores, 9501-801, Ponta Delgada, Portugal
- IVAR, Research Institute for Volcanology and Risk Assessment, University of the Azores, 9501-801, Ponta Delgada, Portugal
| | - M García
- Department of Biotechnology, University of Alicante, Apartado 99, 03080, Alicante, Spain
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Parelho C, Bernardo F, Camarinho R, Rodrigues AS, Garcia P. Testicular damage and farming environments - An integrative ecotoxicological link. CHEMOSPHERE 2016; 155:135-141. [PMID: 27108371 DOI: 10.1016/j.chemosphere.2016.04.043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Revised: 04/08/2016] [Accepted: 04/11/2016] [Indexed: 06/05/2023]
Abstract
The exposure to agrochemicals during farming activities affects the function of the reproductive system, as revealed by the increasing worldwide evidence of male infertility amongst farmers. The main objective of this study was to untangle the link between agricultural practices and male reproductive impairment due to chronic exposure to xenobiotics (such as agrochemicals) in conventional and organic farming environments. For this purpose, male wild mice (Mus musculus) populations from sites representing two distinct farming practices (conventional and organic farming systems) were used as bioindicators for observable effects of testicular damage, namely on a set of histological and cellular parameters: (i) relative volumetric density of different spermatogenic cells and interstitial space; (ii) damage in the seminiferous tubules and (iii) apoptotic cells in the germinal epithelium. Results showed that mice from the conventional farming site bioaccumulated higher Pb hepatic loads, while mice from the organic farming site tend to bioaccumulate higher Cd hepatic loads. In general, for the analyzed testicular damage related parameters, mice from the organic farming site showed a similar performance than mice from the reference site. Mice from the conventional farming site stood out not only by underperforming in most studied parameters, while displaying an association between Pb hepatic loads and the observed testicular structural and functional disruption, but also by the increased stress index (Integrated Biomarker Response value). This study highlights the potential damaging effects of conventional farming practices on testicular structure and function, under natural conditions, raising concern about ensuing fertility risks for farmers.
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Affiliation(s)
- Carolina Parelho
- Department of Biology, University of the Azores, 9501-801, Ponta Delgada, Portugal; cE3c, Centre for Ecology, Evolution and Environmental Changes, and Azorean Biodiversity Group, University of the Azores, 9501-801, Ponta Delgada, Portugal.
| | - Filipe Bernardo
- Department of Biology, University of the Azores, 9501-801, Ponta Delgada, Portugal.
| | - Ricardo Camarinho
- Department of Biology, University of the Azores, 9501-801, Ponta Delgada, Portugal; CVARG, Center of Volcanology and Geological Risks Assessment, University of the Azores, 9501-801, Ponta Delgada, Portugal.
| | - Armindo Santos Rodrigues
- Department of Biology, University of the Azores, 9501-801, Ponta Delgada, Portugal; CVARG, Center of Volcanology and Geological Risks Assessment, University of the Azores, 9501-801, Ponta Delgada, Portugal.
| | - Patrícia Garcia
- Department of Biology, University of the Azores, 9501-801, Ponta Delgada, Portugal; cE3c, Centre for Ecology, Evolution and Environmental Changes, and Azorean Biodiversity Group, University of the Azores, 9501-801, Ponta Delgada, Portugal.
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