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Christensen JR, LaBine GO. Microchemistry of Single Hair Strands Below and Above the Scalp: Impacts of External Contamination on Cuticle and Cortex Layers. Biol Trace Elem Res 2024; 202:3910-3922. [PMID: 38066310 DOI: 10.1007/s12011-023-03973-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 11/21/2023] [Indexed: 07/18/2024]
Abstract
External contamination of hair is the most significant challenge to it becoming an accepted matrix for monitoring endogenous metal exposure and nutritional deficiency. Here we use laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) to quantify elemental concentrations in hair strands below and above the scalp in the cuticle and cortex layers to determine the extent of external contamination in a reference population. Evidence of hair strand contamination occurred for barium, calcium, iron, magnesium, and strontium in both the outer cuticle and the inner cortex layers, with increasing concentrations from root to tip. Aluminum, boron, copper, lead, and manganese showed significant contamination in the cuticle layer only, suggesting some protection of the inner cortex. Phosphorus and potassium decreased outside the scalp suggesting loss by washing, while chromium, mercury, selenium, sodium, titanium, and zinc showed no evidence of loss or external contamination above the scalp. The results clearly show that for most elements, hair chemistry above the scalp is unreliable for use in interpretation of endogenous exposures or deficiencies, and that the below-scalp portion provides a more accurate monitoring tool. This is the first paper to provide a reference range of elemental hair chemistry that is not impacted by the external environment.
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Affiliation(s)
| | - Geriene O LaBine
- TrichAnalytics Inc., #207, 1753 Sean Heights, Saanichton, BC, V8M 0B3, Canada
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2
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Suárez-Criado L, Rodríguez-González P, Marrugo-Negrete J, García Alonso JI, Díez S. Determination of methylmercury and inorganic mercury in human hair samples of individuals from Colombian gold mining regions by double spiking isotope dilution and GC-ICP-MS. ENVIRONMENTAL RESEARCH 2023; 231:115970. [PMID: 37119841 DOI: 10.1016/j.envres.2023.115970] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/11/2023] [Accepted: 04/20/2023] [Indexed: 05/17/2023]
Abstract
With the aim to distinguish between routes of exposition to mercury (Hg) in artisanal and small-scale gold mining (ASGM) communities and to distinguish between Hg contamination sources, Hg species composition should be performed in human biomarkers. In this work, Hg species-specific determination were determined in human hair samples (N = 96), mostly non-directly occupied in ASGM tasks, from the six most relevant gold mining Colombian regions. Therefore, MeHg, Hg(II) and THg concentrations were simultaneously determined by double spiking species-specific isotope dilution mass spectrometry (IDMS) and GC-ICP-MS. Only 16.67% of participants were involved at some point in AGSM works and fish consumption ranged from 3 to 7 times/week, which is between medium and high intake levels. The median concentration of THg obtained from all samples is higher than the reference dose weekly acceptable of MeHg intake established by the EPA (1 ppm), whereas a 25% were more than 4 times higher than the WHO level (2.2 μg Hg g-1). Median THg value of individuals consuming fish 5-7 times per week was significantly higher (p < 0.05) than those of the other consuming groups (12.5 μg Hg g-1). Most of the samples presented a % of MeHg relative to THg higher than 80%. The average % of Hg(II)/THg was 11% and only 10 individuals presented a Hg(II) content over 30%. No significant differences (p > 0.05) were found when the amount of Hg(II) was compared between people involved in AGSM task and people not involved. Interestingly, significant differences among the evaluated groups where found when the percentage of the Hg(II)/THg ratio of these groups were compared. In fact, people involved in AGSM tasks showed 1.7 times higher Hg(II)/THg vs. inhabitants uninvolved. This suggest that Hg(II) determination by IDMS-GC-ICP-MS could be a good proxy for evaluating Hg(II) adsorption by direct exposure to mercury vapors onto hair.
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Affiliation(s)
- Laura Suárez-Criado
- Department of Physical and Analytical Chemistry, University of Oviedo, C/ Julián Clavería, 8, 33006 Oviedo, Spain
| | - Pablo Rodríguez-González
- Department of Physical and Analytical Chemistry, University of Oviedo, C/ Julián Clavería, 8, 33006 Oviedo, Spain
| | | | - J Ignacio García Alonso
- Department of Physical and Analytical Chemistry, University of Oviedo, C/ Julián Clavería, 8, 33006 Oviedo, Spain
| | - Sergi Díez
- Environmental Chemistry Department, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Jordi Girona18-26, 08034, Barcelona, Spain.
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3
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Koenigsmark F, Weinhouse C, Berky AJ, Morales AM, Ortiz EJ, Pierce EM, Pan WK, Hsu-Kim H. Efficacy of Hair Total Mercury Content as a Biomarker of Methylmercury Exposure to Communities in the Area of Artisanal and Small-Scale Gold Mining in Madre de Dios, Peru. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:13350. [PMID: 34948962 PMCID: PMC8707462 DOI: 10.3390/ijerph182413350] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 12/06/2021] [Accepted: 12/08/2021] [Indexed: 12/05/2022]
Abstract
Total mercury content (THg) in hair is an accepted biomarker for chronic dietary methylmercury (MeHg) exposure. In artisanal and small-scale gold mining (ASGM) communities, the validity of this biomarker is questioned because of the potential for contamination from inorganic mercury. As mining communities may have both inorganic and organic mercury exposures, the efficacy of the hair-THg biomarker needs to be evaluated, particularly as nations begin population exposure assessments under their commitments to the Minamata Convention. We sought to validate the efficacy of hair THg for public health monitoring of MeHg exposures for populations living in ASGM communities. We quantified both THg and MeHg contents in hair from a representative subset of participants (N = 287) in a large, population-level mercury exposure assessment in the ASGM region in Madre de Dios (MDD), Peru. We compared population MeHg-THg correlations and %MeHg values with demographic variables including community location, sex, occupation, and nativity. We observed that hair MeHg-THg correlations were high (r > 0.7) for all communities, regardless of location or nativity. Specifically, for individuals within ASGM communities, 81% (121 of 150 total) had hair THg predominantly in the form of MeHg (i.e., >66% of THg) and reflective of dietary exposure to mercury. Furthermore, for individuals with hair THg exceeding the U.S. EPA threshold (1.0 μg/g), 88 out of 106 (83%) had MeHg as the predominant form. As a result, had urine THg solely been used for mercury exposure monitoring, approximately 59% of the ASGM population would have been misclassified as having low mercury exposure. Our results support the use of hair THg for monitoring of MeHg exposure of populations in ASGM settings where alternative biomarkers of MeHg exposure are not feasible.
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Affiliation(s)
- Faye Koenigsmark
- Civil and Environmental Engineering, Duke University, Durham, NC 27708, USA;
| | - Caren Weinhouse
- Oregon Institute of Occupational Health Sciences, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA;
| | - Axel J. Berky
- Nicholas School of the Environment, Duke University, 9 Circuit Drive, Durham, NC 27710, USA;
| | - Ana Maria Morales
- Centro Nacional de Salud Intercultural, Instituto Nacional de Salud, Ministerio de Salud, Cápac Yupanqui 1400-Jesus María, Lima 15027, Peru;
| | - Ernesto J. Ortiz
- Duke Global Health Innovation Center, Duke University, 310 Blackwell Street, Durham, NC 27701, USA;
| | - Eric M. Pierce
- Environmental Sciences Division, Oak Ridge National Laboratory, 1 Bethel Valley, Oak Ridge, TN 37831, USA;
| | - William K. Pan
- Nicholas School of the Environment, Duke University, 9 Circuit Drive, Durham, NC 27710, USA;
- Duke Global Health Institute, Duke University, 310 Trent Drive, Durham, NC 27710, USA
| | - Heileen Hsu-Kim
- Civil and Environmental Engineering, Duke University, Durham, NC 27708, USA;
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4
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Pastor-Idoate S, Coco-Martin RM, Zabalza I, Lantigua Y, Fernández I, Pérez-Castrillón JL, Cuadrado R, de Lazaro JA, Morejon A, Dueñas-Laita A, Pastor JC. Long-term visual pathway alterations after elemental mercury poisoning: report of a series of 29 cases. J Occup Med Toxicol 2021; 16:49. [PMID: 34772411 PMCID: PMC8590381 DOI: 10.1186/s12995-021-00341-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 10/05/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND There are few clinical data on retinal involvement after acute exposure to high concentrations mercury and the available reports are based on a small number of patients suffering chronic exposure. The purpose of this paper is to report findings in workers acutely exposed to very high concentrations of mercury vapor with the aim of providing data on a possible direct retinal involvement. METHODS Twenty-nine patients and 16 controls were evaluated in a comparative case series. Mercury levels in blood and urine samples, visual acuity (VA), contrast sensitivity (CS), visual field (VF), color discrimination and optical coherence tomography (OCT) were recorded. The pattern reversal visual-evoked potentials (PRVEP), full-field and multifocal electroretinography (ffERG/mfERG), pattern electroretinography (PERG), systemic symptoms, presence of erethism, and electromyography (EMG) were also gathered. A descriptive analysis was performed. The correlations between variables also were studied. In addition, electrophysiological data from those patients with deeper VF defects (group 1) were compared with a normal control group. RESULTS Twenty-six workers exhibited symptoms of erethism. The EMG showed sensorimotor polyneuropathy and multiple mononeuropathy. The VA was slightly affected in 48.27% (n = 14) of subjects. Loss of CS in at least one of four spatial frequencies and color vision alterations occurred in 96.5% (n = 28) and 44.8% (n = 13), respectively. VF alterations were identified in 72.4% (n = 21) patients. No morphologic changes were seen in the OCT scans. Latencies over 100 milliseconds and reduced amplitudes of P100 were found in the PRVEP (p < 0.05). The reduced amplitude of the b wave at the ffERG, of the P50 at the PERG and of the P1 wave at the mfERG results (p < 0.05) suggested that the outer retina was involved. Significant negative correlations among blood mercury levels, VA, and ffERG were observed. CONCLUSIONS In this case series, showed that acute exposure to mercury vapor had a hazardous effect on the visual system. Although neurologic and visual pathway involvement was clearly demonstrated, the differences found compared to control support the existence of a direct functional retinal damage and participation in impaired vision in mercury poisoning.
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Affiliation(s)
- Salvador Pastor-Idoate
- Institute of Applied Ophthalmobiology (IOBA), Eye Institute, University of Valladolid, Campus Miguel Delibes, P° de Belén n° 17, 47011, Valladolid, Spain.,Cooperative Health Network for Research in Ophthalmology Oftared, National Institute of Health Carlos III, ISCIII, Madrid, Spain.,Clinic University Hospital of Valladolid, Valladolid, Spain
| | - Rosa M Coco-Martin
- Institute of Applied Ophthalmobiology (IOBA), Eye Institute, University of Valladolid, Campus Miguel Delibes, P° de Belén n° 17, 47011, Valladolid, Spain. .,Cooperative Health Network for Research in Ophthalmology Oftared, National Institute of Health Carlos III, ISCIII, Madrid, Spain.
| | - Iratxe Zabalza
- Institute of Applied Ophthalmobiology (IOBA), Eye Institute, University of Valladolid, Campus Miguel Delibes, P° de Belén n° 17, 47011, Valladolid, Spain.,Puerta del Mar University Hospital of Cádiz, Cádiz, Spain
| | - Yrbani Lantigua
- Institute of Applied Ophthalmobiology (IOBA), Eye Institute, University of Valladolid, Campus Miguel Delibes, P° de Belén n° 17, 47011, Valladolid, Spain.,University Hospital of Burgos, Burgos, Spain
| | - Itziar Fernández
- Institute of Applied Ophthalmobiology (IOBA), Eye Institute, University of Valladolid, Campus Miguel Delibes, P° de Belén n° 17, 47011, Valladolid, Spain.,Cooperative Health Network for Research in Ophthalmology Oftared, National Institute of Health Carlos III, ISCIII, Madrid, Spain
| | - Jose L Pérez-Castrillón
- Institute of Applied Ophthalmobiology (IOBA), Eye Institute, University of Valladolid, Campus Miguel Delibes, P° de Belén n° 17, 47011, Valladolid, Spain.,Department of Internal Medicine, Río Hortega University Hospital, University of Valladolid, Valladolid, Spain
| | - Ruben Cuadrado
- Institute of Applied Ophthalmobiology (IOBA), Eye Institute, University of Valladolid, Campus Miguel Delibes, P° de Belén n° 17, 47011, Valladolid, Spain
| | - Jose A de Lazaro
- Institute of Applied Ophthalmobiology (IOBA), Eye Institute, University of Valladolid, Campus Miguel Delibes, P° de Belén n° 17, 47011, Valladolid, Spain
| | - Angela Morejon
- Institute of Applied Ophthalmobiology (IOBA), Eye Institute, University of Valladolid, Campus Miguel Delibes, P° de Belén n° 17, 47011, Valladolid, Spain
| | - Antonio Dueñas-Laita
- Institute of Applied Ophthalmobiology (IOBA), Eye Institute, University of Valladolid, Campus Miguel Delibes, P° de Belén n° 17, 47011, Valladolid, Spain.,Unit of Clinical Toxicology, Río Hortega University Hospital, University of Valladolid, Valladolid, Spain
| | - Jose C Pastor
- Institute of Applied Ophthalmobiology (IOBA), Eye Institute, University of Valladolid, Campus Miguel Delibes, P° de Belén n° 17, 47011, Valladolid, Spain.,Cooperative Health Network for Research in Ophthalmology Oftared, National Institute of Health Carlos III, ISCIII, Madrid, Spain.,Clinic University Hospital of Valladolid, Valladolid, Spain
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5
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Doble PA, de Vega RG, Bishop DP, Hare DJ, Clases D. Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry Imaging in Biology. Chem Rev 2021; 121:11769-11822. [PMID: 34019411 DOI: 10.1021/acs.chemrev.0c01219] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Elemental imaging gives insight into the fundamental chemical makeup of living organisms. Every cell on Earth is comprised of a complex and dynamic mixture of the chemical elements that define structure and function. Many disease states feature a disturbance in elemental homeostasis, and understanding how, and most importantly where, has driven the development of laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) as the principal elemental imaging technique for biologists. This review provides an outline of ICP-MS technology, laser ablation cell designs, imaging workflows, and methods of quantification. Detailed examples of imaging applications including analyses of cancers, elemental uptake and accumulation, plant bioimaging, nanomaterials in the environment, and exposure science and neuroscience are presented and discussed. Recent incorporation of immunohistochemical workflows for imaging biomolecules, complementary and multimodal imaging techniques, and image processing methods is also reviewed.
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Affiliation(s)
- Philip A Doble
- Atomic Medicine Initiative, University of Technology Sydney, Broadway, New South Wales 2007, Australia
| | - Raquel Gonzalez de Vega
- Atomic Medicine Initiative, University of Technology Sydney, Broadway, New South Wales 2007, Australia
| | - David P Bishop
- Atomic Medicine Initiative, University of Technology Sydney, Broadway, New South Wales 2007, Australia
| | - Dominic J Hare
- Atomic Medicine Initiative, University of Technology Sydney, Broadway, New South Wales 2007, Australia.,School of BioSciences, University of Melbourne, Parkville, Victoria 3052, Australia
| | - David Clases
- Atomic Medicine Initiative, University of Technology Sydney, Broadway, New South Wales 2007, Australia
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6
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Queipo-Abad S, González PR, Martínez-Morillo E, Davis WC, García Alonso JI. Concentration of mercury species in hair, blood and urine of individuals occupationally exposed to gaseous elemental mercury in Asturias (Spain) and its comparison with individuals from a control group formed by close relatives. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 672:314-323. [PMID: 30959298 DOI: 10.1016/j.scitotenv.2019.03.367] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/22/2019] [Accepted: 03/23/2019] [Indexed: 06/09/2023]
Abstract
Between November 19th, 2012 and December 3rd, 2012, 50 workers were intoxicated with gaseous Hg in San Juan de Nieva (Asturias, Spain) during the maintenance of a heat exchanger of a zinc manufacturer. We have quantified the concentration of methylmercury (MeHg), ethylmercury (EtHg) and Hg(II) in blood, hair and urine samples of those individuals taken three years after the accident. Blood, hair and urine of their closest relatives were also analyzed to assess whether the mercury burden present in the intoxicated individuals was due to the occupational exposure or to environmental or lifestyle-related factors. The determination of the mercury species in the samples was carried out applying multiple spiking Isotope Dilution GC-ICP-MS. This procedure corrects for possible interconversion reactions between the Hg species during the sample preparation procedure. Linear correlations were observed for both groups when plotting MeHg in blood vs MeHg in hair, and MeHg in hair vs Hg (II) in urine. The concentrations of Hg species in the intoxicated individuals were not significantly different from those obtained in the control group except for MeHg in blood. Significantly higher levels of MeHg in blood were obtained in some of the intoxicated individuals who had not consumed fish or seafood since the accident. A different correlation between MeHg in hair and MeHg in blood was obtained for these individuals compared to the control group who showed a hair-to-blood ratio consistent with the reported value for people exposed to Hg via fish consumption. Our results suggest that ingested MeHg followed the same pathway of deposition in hair in exposed and non-exposed individuals. However, the exposed individuals with high MeHg levels in blood showed a significantly different extent of MeHg deposition in hair compared to the control group.
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Affiliation(s)
- Silvia Queipo-Abad
- Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería, 8, 33006 Oviedo, Spain
| | - Pablo Rodríguez González
- Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería, 8, 33006 Oviedo, Spain.
| | - Eduardo Martínez-Morillo
- Service of Clinical Biochemistry, Laboratory of Medicine, Central University Hospital of Asturias (HUCA), 33011 Oviedo, Spain
| | - W Clay Davis
- Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | - José Ignacio García Alonso
- Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería, 8, 33006 Oviedo, Spain
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7
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Laser Ablation Inductively Coupled Plasma Spectrometry: Metal Imaging in Experimental and Clinical Wilson Disease. INORGANICS 2019. [DOI: 10.3390/inorganics7040054] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Wilson disease is an inherited disorder caused by mutations in the ATP7B gene resulting in copper metabolism disturbances. As a consequence, copper accumulates in different organs with most common presentation in liver and brain. Chelating agents that nonspecifically chelate copper, and promote its urinary excretion, or zinc salts interfering with the absorption of copper from the gastrointestinal tract, are current medications. Also gene therapy, restoring ATP7B gene function or trials with bis-choline tetrathiomolybdate (WTX101) removing excess copper from intracellular hepatic copper stores and increasing biliary copper excretion, is promising in reducing body’s copper content. Therapy efficacy is mostly evaluated by testing for evidence of liver disease and neurological symptoms, hepatic synthetic functions, indices of copper metabolisms, urinary copper excretions, or direct copper measurements. However, several studies conducted in patients or Wilson disease models have shown that not only the absolute concentration of copper, but also its spatial distribution within the diseased tissue is relevant for disease severity and outcome. Here we discuss laser ablation inductively coupled plasma spectrometry imaging as a novel method for accurate determination of trace element concentrations with high diagnostic sensitivity, spatial resolution, specificity, and quantification ability in experimental and clinical Wilson disease specimens.
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8
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Gutiérrez-Mosquera H, Sujitha SB, Jonathan MP, Sarkar SK, Medina-Mosquera F, Ayala-Mosquera H, Morales-Mira G, Arreola-Mendoza L. Mercury levels in human population from a mining district in Western Colombia. J Environ Sci (China) 2018; 68:83-90. [PMID: 29908748 DOI: 10.1016/j.jes.2017.12.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 11/22/2017] [Accepted: 12/06/2017] [Indexed: 06/08/2023]
Abstract
A biomonitoring study was carried out to examine the adverse impacts of total mercury in the blood (HgB), urine (HgU) and human scalp hair (HgH) on the residents of a mining district in Colombia. Representative biological samples (scalp hair, urine and blood) were collected from volunteered participants (n=63) to estimate the exposure levels of THg using a Direct mercury analyzer. The geometric mean of THg concentrations in the hair, urine and blood of males were 15.98μg/g, 23.89μg/L and 11.29μg/L respectively, whereas the females presented values of 8.55μg/g, 5.37μg/L and 8.80μg/L. Chronic urinary Hg (HgU) levels observed in male workers (32.53μg/L) are attributed to their long termed exposures to inorganic and metallic mercury from gold panning activities. On an average, the levels of THg are increasing from blood (10.05μg/L) to hair (12.27μg/g) to urine (14.63μg/L). Significant positive correlation was found between hair and blood urinary levels in both male and female individuals. Thus the present biomonitoring investigation to evaluate the Hg levels and associated health issues would positively form a framework for further developmental plans and policies in building an ecofriendly ecosystem.
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Affiliation(s)
- Harry Gutiérrez-Mosquera
- Facultad de Ingeniería, Universidad Tecnológica del Chocó, Carrera 22 No.18B-10, Quibdó, Colombia; Facultad de Ingeniería, Universidad de Medellín, Carrera 87 No. 30-65, Medellín, Colombia
| | - S B Sujitha
- Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD), Instituto Politécnico Nacional (IPN), Calle 30 de junio de 1520, Barrio la Laguna Ticomán, Del. Gustavo A. Madero, C.P.07340 Ciudad de México, México
| | - M P Jonathan
- Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD), Instituto Politécnico Nacional (IPN), Calle 30 de junio de 1520, Barrio la Laguna Ticomán, Del. Gustavo A. Madero, C.P.07340 Ciudad de México, México.
| | - S K Sarkar
- Department of Marine Science, University of Calcutta, 35 Ballygunge Circular Road, Calcutta 700 019, India
| | - Fairy Medina-Mosquera
- Instituto de Investigaciones Ambientales del Pacífico (IIAP), Carrera 6 No. 37-39, Quibdó, Colombia
| | - Helcias Ayala-Mosquera
- Instituto de Investigaciones Ambientales del Pacífico (IIAP), Carrera 6 No. 37-39, Quibdó, Colombia
| | - Gladis Morales-Mira
- Facultad de Ingeniería, Universidad de Medellín, Carrera 87 No. 30-65, Medellín, Colombia
| | - Laura Arreola-Mendoza
- Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD), Instituto Politécnico Nacional (IPN), Calle 30 de junio de 1520, Barrio la Laguna Ticomán, Del. Gustavo A. Madero, C.P.07340 Ciudad de México, México
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9
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Elemental hair analysis: A review of procedures and applications. Anal Chim Acta 2017; 992:1-23. [DOI: 10.1016/j.aca.2017.09.017] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 09/06/2017] [Accepted: 09/06/2017] [Indexed: 12/13/2022]
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10
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Renedo M, Bustamante P, Tessier E, Pedrero Z, Cherel Y, Amouroux D. Assessment of mercury speciation in feathers using species-specific isotope dilution analysis. Talanta 2017; 174:100-110. [DOI: 10.1016/j.talanta.2017.05.081] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 05/24/2017] [Accepted: 05/26/2017] [Indexed: 11/15/2022]
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11
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Queipo Abad S, Rodríguez-González P, Davis WC, García Alonso JI. Development of a Common Procedure for the Determination of Methylmercury, Ethylmercury, and Inorganic Mercury in Human Whole Blood, Hair, and Urine by Triple Spike Species-Specific Isotope Dilution Mass Spectrometry. Anal Chem 2017; 89:6731-6739. [DOI: 10.1021/acs.analchem.7b00966] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Silvia Queipo Abad
- Department of Physical
and Analytical Chemistry, University of Oviedo, Julián
Clavería, 8, 33006 Oviedo, Spain
| | - Pablo Rodríguez-González
- Department of Physical
and Analytical Chemistry, University of Oviedo, Julián
Clavería, 8, 33006 Oviedo, Spain
| | - W. Clay Davis
- Chemical Sciences
Division, National Institute of Standards and Technology, Charleston, South Carolina 29412, United States
| | - José Ignacio García Alonso
- Department of Physical
and Analytical Chemistry, University of Oviedo, Julián
Clavería, 8, 33006 Oviedo, Spain
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12
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Rizzetti DA, Torres JGD, Escobar AG, da Silva TM, Moraes PZ, Hernanz R, Peçanha FM, Castro MM, Vassallo DV, Salaices M, Alonso MJ, Wiggers GA. The cessation of the long-term exposure to low doses of mercury ameliorates the increase in systolic blood pressure and vascular damage in rats. ENVIRONMENTAL RESEARCH 2017; 155:182-192. [PMID: 28222365 DOI: 10.1016/j.envres.2017.02.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 02/15/2017] [Accepted: 02/16/2017] [Indexed: 06/06/2023]
Abstract
This study aimed to verify whether a prolonged exposure to low-level mercury promotes haemodynamic disorders and studied the reversibility of this vascular damage. Rats were divided into seven groups: three control groups received saline solution (im) for 30, 60 or 90 days; two groups received HgCl2 (im, first dose, 4.6μg/kg, subsequent doses 0.07μg/kg/day) for 30 or 60 days; two groups received HgCl2 for 30 or 60 days (im, same doses) followed by a 30-day washout period. Systolic blood pressure (SBP) was measured, along with analysis of vascular response to acetylcholine (ACh) and phenylephrine (Phe) in the absence and presence of endothelium, a nitric oxide (NO) synthase inhibitor, an NADPH oxidase inhibitor, superoxide dismutase, a non-selective cyclooxygenase (COX) inhibitor and an AT1 receptor blocker. Reactive oxygen species (ROS) levels and antioxidant power were measured in plasma. HgCl2 exposure for 30 and 60 days: a) reduced the endothelium-dependent relaxation; b) increased the Phe-induced contraction and the contribution of ROS, COX-derived vasoconstrictor prostanoids and angiotensin II acting on AT1 receptors to this response while the NO participation was reduced; c) increased the oxidative stress in plasma; d) increased the SBP only after 60 days of exposure. After the cessation of HgCl2 exposure, SBP, endothelium-dependent relaxation, Phe-induced contraction and the oxidative stress were normalised, despite the persistence of the increased COX-derived prostanoids. These results demonstrated that long-term HgCl2 exposure increases SBP as a consequence of vascular dysfunction; however, after HgCl2 removal from the environment the vascular function ameliorates.
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Affiliation(s)
| | | | - Alyne Goulart Escobar
- Postgraduate Program in Biochemistry, Universidade Federal do Pampa, Uruguaiana, RS, Brazil
| | - Taiz Martins da Silva
- Postgraduate Program in Biochemistry, Universidade Federal do Pampa, Uruguaiana, RS, Brazil; Department of Basic Health Sciences, Universidad Rey Juan Carlos, Alcorcón, Spain; Bioactivity and Food Analysis Laboratory, Instituto de Investigación en Ciencias de la Alimentación, Madrid, Spain; Department of Physiological Sciences, Universidade Federal do Espírito Santo, Vitória, ES, Brazil; Department of Pharmacology, Universidad Autónoma de Madrid, Madrid, Spain
| | - Paola Zambelli Moraes
- Postgraduate Program in Biochemistry, Universidade Federal do Pampa, Uruguaiana, RS, Brazil
| | - Raquel Hernanz
- Department of Basic Health Sciences, Universidad Rey Juan Carlos, Alcorcón, Spain
| | - Franck Maciel Peçanha
- Postgraduate Program in Biochemistry, Universidade Federal do Pampa, Uruguaiana, RS, Brazil
| | - Marta Miguel Castro
- Bioactivity and Food Analysis Laboratory, Instituto de Investigación en Ciencias de la Alimentación, Madrid, Spain
| | - Dalton Valentim Vassallo
- Department of Physiological Sciences, Universidade Federal do Espírito Santo, Vitória, ES, Brazil
| | - Mercedes Salaices
- Department of Pharmacology, Universidad Autónoma de Madrid, Madrid, Spain
| | - Maria Jesús Alonso
- Department of Basic Health Sciences, Universidad Rey Juan Carlos, Alcorcón, Spain
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Identification of exposure to toxic metals by means of segmental hair analysis: a case report of alleged chromium intoxication. Forensic Toxicol 2016. [DOI: 10.1007/s11419-016-0340-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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