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Gastellu T, Le Bizec B, Rivière G. Characterisation of the risk associated with chronic lifetime exposure to mixture of chemical hazards: case study of trace elements. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2023; 40:951-970. [PMID: 37428801 DOI: 10.1080/19440049.2023.2231086] [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: 04/02/2023] [Revised: 06/20/2023] [Accepted: 06/21/2023] [Indexed: 07/12/2023]
Abstract
Risk assessment methodology, mostly commonly used, faces the complexity of the environment. Populations are exposed to multiple sources of chemicals throughout life and the chemical mixtures they are exposed change during time (lifestyle factors, regulatory decisions, etc). The risk assessment needs to consider these dynamics and the evolution of the body with age, in order to refine the exposure assessment to chemicals and to predict the health impact of these exposures. This review highlights the latest methodologies developed to improve risk assessment, especially cor heavy metals. The methodologies aim to better describe the chemical toxicokinetic and toxicodynamic as well as the exposure assessment. Human Biomonitoring (HBM) data give great opportunities to link biomarkers of exposure with an adverse effect. Physiologically-Based Toxicokinetic (PBTK) models are more and more used to simulate the evolution of biomarkers in organisms, considering the external exposures and the physiological evolutions. PBTK models may also be used to determine the routes of exposure or to predict the impacts of schemes of exposure. The major limit is the integration of several chemicals in mixture with common adverse effects and the interactions between them.
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Affiliation(s)
- Thomas Gastellu
- Oniris, INRAE, LABERCA, Nantes, France
- Risk Assessment Department, French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Maisons-Alfort, France
| | | | - Gilles Rivière
- Risk Assessment Department, French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Maisons-Alfort, France
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2
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Abstract
Historically, benzene has been widely used in a large variety of applications. Occupational exposure limits (OELs) were set for benzene as it was found to be acutely toxic, causing central nervous system depression at high exposures. OELs were lowered when it was discovered that chronic exposure to benzene could cause haematotoxicity. After confirmation that benzene is a human carcinogen causing acute myeloid leukaemia and possibly other blood malignancies, OEL were further lowered. The industrial application of benzene as solvent is almost completely discontinued but it is still used as feedstock for the production of other materials, such as styrene. Occupational exposure to benzene may also occur since it is present in crude oil, natural gas condensate and a variety of petroleum products and because benzene can be formed in combustion of organic material. In the past few years, lower OELs for benzene in the range of 0.05-0.25 ppm have been proposed or were already established to protect workers from benzene-induced cancer. The skin is an important potential route of exposure and relatively more important at lower OELs. Consequently, human biomonitoring - which integrates all exposure routes - is routinely applied to control overall exposure to benzene. Several potential biomarkers have been proposed and investigated. For compliance check of the current low OELs, urinary S-phenylmercapturic acid (S-PMA), urinary benzene and blood benzene are feasible biomarkers. S-PMA appears to be the most promising biomarker but proper validation of biomarker levels corresponding to airborne benzene concentrations below 0.25 ppm are needed.
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Affiliation(s)
- Peter J Boogaard
- AFSG - Division of Toxicology, Wageningen University, Wageningen, The Netherlands
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3
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Kohn E, Barchel D, Golik A, Lougassi M, Wainstock T, Berkovitch M, Schwartsburd F. Analysis of 10 Urinary BTEX Metabolites by Liquid Chromatography Tandem Mass Spectrometry. Biomed Chromatogr 2021; 36:e5302. [PMID: 34935165 DOI: 10.1002/bmc.5302] [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: 09/14/2021] [Revised: 11/15/2021] [Accepted: 11/30/2021] [Indexed: 11/07/2022]
Abstract
Benzene, toluene, ethylbenzene and xylene (BTEX) are a group of volatile organic compounds that are ubiquitous in the environment due to the numerous anthropogenic sources. Exposure to BTEX pose a health risk by increasing probability for damage to multiple organs, neurocognitive impairment and birth defects. Urinary BTEX metabolites are useful biomarkers for evaluation of BTEX exposure, because of easiness of sampling and their longer physiological half-lives compared with parent compounds. A method that utilizes liquid chromatography coupled to electrospray ionization tandem mass spectrometry (LC-MS/MS) was developed and validated for simultaneously monitoring ten urinary BTEX metabolites. During the sample preparation an aliquot of urine was diluted by the equal volume of 1% formic acid, internal standards solution was added, then the sample was centrifuged and analyzed. The analytes were separated on the Kinetex-F5 column by applying a linear gradient, consisting of 0.1 % formic acid and methanol. The method was validated according to the FDA Bioanalytical Method Validation Guidance for Industry. The mean method's accuracies of the spiked matrix were 81-122%; the interday precision ranged from 4% to 20%; limits of quantitation were 0.5-2 μg/L. The method was used for evaluation of baseline levels of urinary BTEX metabolites in 87 firefighters.
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Affiliation(s)
- Elkana Kohn
- Clinical Pharmacology and Toxicology Unit, Shamir Medical Center, Zerifin, Israel
| | - Dana Barchel
- Clinical Pharmacology and Toxicology Unit, Shamir Medical Center, Zerifin, Israel
| | - Ahuva Golik
- Clinical Pharmacology and Toxicology Unit, Shamir Medical Center, Zerifin, Israel
- Adelson School of Medicine, Ariel University, Ariel, Israel
| | | | - Tamar Wainstock
- Department of Public Health, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Matitiahu Berkovitch
- Clinical Pharmacology and Toxicology Unit, Shamir Medical Center, Zerifin, Israel
| | - Frieda Schwartsburd
- National Residue Control Laboratory, Kimron Veterinary Institute, Veterinary Services, Ministry of Agriculture and Rural Development, Beit Dagan, Israel
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4
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Tohon H, Valcke M, Aranda-Rodriguez R, Nong A, Haddad S. Estimation of toluene exposure in air from BMA (S-benzylmercapturic acid) urinary measures using a reverse dosimetry approach based on physiologically pharmacokinetic modeling. Regul Toxicol Pharmacol 2021; 120:104860. [PMID: 33406392 DOI: 10.1016/j.yrtph.2020.104860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 12/14/2020] [Accepted: 12/28/2020] [Indexed: 10/22/2022]
Abstract
This study aimed to use a reverse dosimetry PBPK modeling approach to estimate toluene atmospheric exposure from urinary measurements of S-benzylmercapturic acid (BMA) in a small group of individuals and to evaluate the uncertainty associated to urinary spot-sampling compared to 24-h collected urine samples. Each exposure assessment technique was developed namely to estimate toluene air exposure from BMA measurements in 24-h urine samples (24-h-BMA) and from distributions of daily urinary BMA spot measurements (DUBSM). Model physiological parameters were described based upon age, weight, size and sex. Monte Carlo simulations with the PBPK model allowed converting DUBSM distribution (and 24-h-BMA) into toluene air levels. For the approach relying on DUBSM distribution, the ratio between the 95% probability of predicted toluene concentration and its 50% probability in each individual varied between 1.2 and 1.4, while that based on 24-h-BMA varied between 1.0 and 1.1. This suggests more variability in estimated exposure from spot measurements. Thus, estimating toluene exposure based on DUBSM distribution generated about 20% more uncertainty. Toluene levels estimated (0.0078-0.0138 ppm) are well below Health Canada's maximum chronic air guidelines. PBPK modeling and reverse dosimetry may be combined to interpret urinary metabolites data of VOCs and assess related uncertainties.
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Affiliation(s)
- Honesty Tohon
- Department of Environmental and Occupational Health, ESPUM, CReSP, Université de Montréal, C.P. 6128 Succ. Centre-ville, Montreal, Qc, H3C 3J7, Canada
| | - Mathieu Valcke
- Department of Environmental and Occupational Health, ESPUM, CReSP, Université de Montréal, C.P. 6128 Succ. Centre-ville, Montreal, Qc, H3C 3J7, Canada; Direction de la santé environnementale et de la toxicologie, Institut national de santé publique du Québec, Montréal, Quebec, Canada
| | - Rocio Aranda-Rodriguez
- Exposure and Biomonitoring Division, Environmental Health Sciences and Research Bureau, Health Canada, Ottawa, ON, Canada
| | - Andy Nong
- Exposure and Biomonitoring Division, Environmental Health Sciences and Research Bureau, Health Canada, Ottawa, ON, Canada
| | - Sami Haddad
- Department of Environmental and Occupational Health, ESPUM, CReSP, Université de Montréal, C.P. 6128 Succ. Centre-ville, Montreal, Qc, H3C 3J7, Canada.
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5
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Miller CJ, Runge-Morris M, Cassidy-Bushrow AE, Straughen JK, Dittrich TM, Baker TR, Petriello MC, Mor G, Ruden DM, O’Leary BF, Teimoori S, Tummala CM, Heldman S, Agarwal M, Roth K, Yang Z, Baker BB. A Review of Volatile Organic Compound Contamination in Post-Industrial Urban Centers: Reproductive Health Implications Using a Detroit Lens. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E8755. [PMID: 33255777 PMCID: PMC7728359 DOI: 10.3390/ijerph17238755] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/22/2020] [Accepted: 11/24/2020] [Indexed: 01/18/2023]
Abstract
Volatile organic compounds (VOCs) are a group of aromatic or chlorinated organic chemicals commonly found in manufactured products that have high vapor pressure, and thus vaporize readily at room temperature. While airshed VOCs are well studied and have provided insights into public health issues, we suggest that belowground VOCs and the related vapor intrusion process could be equally or even more relevant to public health. The persistence, movement, remediation, and human health implications of subsurface VOCs in urban landscapes remain relatively understudied despite evidence of widespread contamination. This review explores the state of the science of subsurface movement and remediation of VOCs through groundwater and soils, the linkages between these poorly understood contaminant exposure pathways and health outcomes based on research in various animal models, and describes the role of these contaminants in human health, focusing on birth outcomes, notably low birth weight and preterm birth. Finally, this review provides recommendations for future research to address knowledge gaps that are essential for not only tackling health disparities and environmental injustice in post-industrial cities, but also protecting and preserving critical freshwater resources.
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Affiliation(s)
- Carol J. Miller
- Center for Leadership in Environmental Awareness and Research (CLEAR)—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (C.J.M.); (M.R.-M.); (A.E.C.-B.); (J.K.S.); (T.M.D.); (T.R.B.); (M.C.P.); (G.M.); (D.M.R.); (B.F.O.)
- Department of Civil and Environmental Engineering—College of Engineering, Wayne State University, 5050 Anthony Wayne Drive, Detroit, MI 48202, USA; (S.T.); (C.M.T.)
| | - Melissa Runge-Morris
- Center for Leadership in Environmental Awareness and Research (CLEAR)—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (C.J.M.); (M.R.-M.); (A.E.C.-B.); (J.K.S.); (T.M.D.); (T.R.B.); (M.C.P.); (G.M.); (D.M.R.); (B.F.O.)
- Institute of Environmental Health Sciences—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (M.A.); (K.R.); (Z.Y.)
| | - Andrea E. Cassidy-Bushrow
- Center for Leadership in Environmental Awareness and Research (CLEAR)—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (C.J.M.); (M.R.-M.); (A.E.C.-B.); (J.K.S.); (T.M.D.); (T.R.B.); (M.C.P.); (G.M.); (D.M.R.); (B.F.O.)
- Department of Public Health Sciences, Henry Ford Hospital, 1 Ford Place, Detroit, MI 48202, USA
| | - Jennifer K. Straughen
- Center for Leadership in Environmental Awareness and Research (CLEAR)—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (C.J.M.); (M.R.-M.); (A.E.C.-B.); (J.K.S.); (T.M.D.); (T.R.B.); (M.C.P.); (G.M.); (D.M.R.); (B.F.O.)
- Department of Public Health Sciences, Henry Ford Hospital, 1 Ford Place, Detroit, MI 48202, USA
| | - Timothy M. Dittrich
- Center for Leadership in Environmental Awareness and Research (CLEAR)—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (C.J.M.); (M.R.-M.); (A.E.C.-B.); (J.K.S.); (T.M.D.); (T.R.B.); (M.C.P.); (G.M.); (D.M.R.); (B.F.O.)
- Department of Civil and Environmental Engineering—College of Engineering, Wayne State University, 5050 Anthony Wayne Drive, Detroit, MI 48202, USA; (S.T.); (C.M.T.)
| | - Tracie R. Baker
- Center for Leadership in Environmental Awareness and Research (CLEAR)—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (C.J.M.); (M.R.-M.); (A.E.C.-B.); (J.K.S.); (T.M.D.); (T.R.B.); (M.C.P.); (G.M.); (D.M.R.); (B.F.O.)
- Institute of Environmental Health Sciences—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (M.A.); (K.R.); (Z.Y.)
- Department of Pharmacology—School of Medicine, Wayne State University, 540 E. Canfield, Detroit, MI 48202, USA;
| | - Michael C. Petriello
- Center for Leadership in Environmental Awareness and Research (CLEAR)—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (C.J.M.); (M.R.-M.); (A.E.C.-B.); (J.K.S.); (T.M.D.); (T.R.B.); (M.C.P.); (G.M.); (D.M.R.); (B.F.O.)
- Institute of Environmental Health Sciences—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (M.A.); (K.R.); (Z.Y.)
- Department of Pharmacology—School of Medicine, Wayne State University, 540 E. Canfield, Detroit, MI 48202, USA;
| | - Gil Mor
- Center for Leadership in Environmental Awareness and Research (CLEAR)—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (C.J.M.); (M.R.-M.); (A.E.C.-B.); (J.K.S.); (T.M.D.); (T.R.B.); (M.C.P.); (G.M.); (D.M.R.); (B.F.O.)
- C.S. Mott Center for Human Growth and Development, Wayne State University, 275 E. Hancock, Detroit, MI 48201, USA
| | - Douglas M. Ruden
- Center for Leadership in Environmental Awareness and Research (CLEAR)—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (C.J.M.); (M.R.-M.); (A.E.C.-B.); (J.K.S.); (T.M.D.); (T.R.B.); (M.C.P.); (G.M.); (D.M.R.); (B.F.O.)
- Institute of Environmental Health Sciences—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (M.A.); (K.R.); (Z.Y.)
- Department of Pharmacology—School of Medicine, Wayne State University, 540 E. Canfield, Detroit, MI 48202, USA;
- Department of Obstetrics and Gynecology, Wayne State University, 275 E. Hancock, Detroit, MI 48201, USA
| | - Brendan F. O’Leary
- Center for Leadership in Environmental Awareness and Research (CLEAR)—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (C.J.M.); (M.R.-M.); (A.E.C.-B.); (J.K.S.); (T.M.D.); (T.R.B.); (M.C.P.); (G.M.); (D.M.R.); (B.F.O.)
- Department of Civil and Environmental Engineering—College of Engineering, Wayne State University, 5050 Anthony Wayne Drive, Detroit, MI 48202, USA; (S.T.); (C.M.T.)
| | - Sadaf Teimoori
- Department of Civil and Environmental Engineering—College of Engineering, Wayne State University, 5050 Anthony Wayne Drive, Detroit, MI 48202, USA; (S.T.); (C.M.T.)
| | - Chandra M. Tummala
- Department of Civil and Environmental Engineering—College of Engineering, Wayne State University, 5050 Anthony Wayne Drive, Detroit, MI 48202, USA; (S.T.); (C.M.T.)
| | - Samantha Heldman
- Department of Pharmacology—School of Medicine, Wayne State University, 540 E. Canfield, Detroit, MI 48202, USA;
| | - Manisha Agarwal
- Institute of Environmental Health Sciences—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (M.A.); (K.R.); (Z.Y.)
| | - Katherine Roth
- Institute of Environmental Health Sciences—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (M.A.); (K.R.); (Z.Y.)
| | - Zhao Yang
- Institute of Environmental Health Sciences—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (M.A.); (K.R.); (Z.Y.)
| | - Bridget B. Baker
- Center for Leadership in Environmental Awareness and Research (CLEAR)—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (C.J.M.); (M.R.-M.); (A.E.C.-B.); (J.K.S.); (T.M.D.); (T.R.B.); (M.C.P.); (G.M.); (D.M.R.); (B.F.O.)
- Institute of Environmental Health Sciences—Integrative Biosciences Center, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA; (M.A.); (K.R.); (Z.Y.)
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Darney K, Testai E, Buratti FM, Di Consiglio E, Kasteel EE, Kramer N, Turco L, Vichi S, Roudot AC, Dorne JL, Béchaux C. Inter-ethnic differences in CYP3A4 metabolism: A Bayesian meta-analysis for the refinement of uncertainty factors in chemical risk assessment. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.comtox.2019.100092] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Tohon H, Valcke M, Haddad S. An assessment of the impact of multi‐route co‐exposures on human variability in toxicokinetics: A case study with binary and quaternary mixtures of volatile drinking water contaminants. J Appl Toxicol 2019; 39:974-991. [DOI: 10.1002/jat.3787] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 12/14/2018] [Accepted: 01/19/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Honesty Tohon
- Department of Environmental and Occupational Health, ESPUM, IRSPUMUniversité de Montréal Montreal QC Canada
| | - Mathieu Valcke
- Department of Environmental and Occupational Health, ESPUM, IRSPUMUniversité de Montréal Montreal QC Canada
- Institut national de santé publique du Québec Montréal QC Canada
| | - Sami Haddad
- Department of Environmental and Occupational Health, ESPUM, IRSPUMUniversité de Montréal Montreal QC Canada
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8
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Tohon H, Nong A, Moreau M, Valcke M, Haddad S. Reverse dosimetry modeling of toluene exposure concentrations based on biomonitoring levels from the Canadian health measures survey. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2018; 81:1066-1082. [PMID: 30365389 DOI: 10.1080/15287394.2018.1534174] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 10/05/2018] [Accepted: 10/06/2018] [Indexed: 06/08/2023]
Abstract
Biomonitoring might provide useful estimates of population exposure to environmental chemicals. However, data uncertainties stemming from interindividual variability are common in large population biomonitoring surveys. Physiologically based pharmacokinetic (PBPK) models might be used to account for age- and gender-related variability in internal dose. The objective of this study was to reconstruct air concentrations consistent with blood toluene measures reported in the third Canadian Health Measures Survey using reverse dosimetry PBPK modeling techniques. Population distributions of model's physiological parameters were described based upon age, weight, and size for four subpopulations (12-19, 20-39, 40-59, and 60-79 years old). Monte Carlo simulations applied to PBPK modeling allowed converting the distributions of venous blood measures of toluene obtained from CHMS into related air levels. Based upon blood levels observed at the 50th, 90th and 95th percentiles, corresponding air toluene concentrations were estimated for teenagers aged 12-19 years as being, respectively, 0.009, 0.04 and 0.06 ppm. Similarly, values were computed for adults aged 20-39 years (0.007, 0.036, and 0.06 ppm), 40-59 years (0.007, 0.036 and 0.06 ppm) and 60-79 years (0.006, 0.022 and 0.04 ppm). These estimations are well below Health Canada's maximum recommended chronic air guidelines for toluene. In conclusion, PBPK modeling and reverse dosimetry may be combined to help interpret biomonitoring data for chemical exposure in large population surveys and estimate the associated toxicological health risk.
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Affiliation(s)
- Honesty Tohon
- a Department of Environmental and Occupational Health , ESPUM, IRSPUM, Université de Montréal , Montreal , (Qc.) , Canada
| | - Andy Nong
- b Exposure and Biomonitoring Division , Environmental Health Sciences and Research Bureau, Health Canada , Ottawa , ON , Canada
| | - Marjory Moreau
- b Exposure and Biomonitoring Division , Environmental Health Sciences and Research Bureau, Health Canada , Ottawa , ON , Canada
| | - Mathieu Valcke
- a Department of Environmental and Occupational Health , ESPUM, IRSPUM, Université de Montréal , Montreal , (Qc.) , Canada
- c Direction de la santé environnementale et de la toxicologie , Institut national de santé publique du Québec , Montréal , Quebec , Canada
| | - Sami Haddad
- a Department of Environmental and Occupational Health , ESPUM, IRSPUM, Université de Montréal , Montreal , (Qc.) , Canada
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Oliveira M, Slezakova K, Delerue-Matos C, Pereira MDC, Morais S. Indoor air quality in preschools (3- to 5-year-old children) in the Northeast of Portugal during spring-summer season: pollutants and comfort parameters. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2017; 80:740-755. [PMID: 28569620 DOI: 10.1080/15287394.2017.1286932] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Indoor air quality at schools (elementary, primary) has been the subject of many studies; however, there are still relative few data regarding preschool (3- to 5-year-old children) environments. This investigation determined the concentrations of particulate matter (PM)2.5, total volatile organic compounds (TVOC), formaldehyde, carbon monoxide (CO), and ozone (O3) as well as the levels of carbon dioxide (CO2), temperature, and relative humidity (RH) in the indoor and outdoor air of two preschools situated in different geographical regions of Portugal. The indoor concentrations of TVOC, CO, O3, and CO2 were predominantly higher at the end of school day compared to early morning periods. The TVOC and CO2 concentrations were higher indoors than outdoors suggesting predominantly an indoor origin. Outdoor air infiltrations were the major contributing source of CO and O3 to indoor air in both preschools. The concentrations of all pollutants were within the limits defined by national regulations and international organizations, except for TVOC that exceeded 8-12-fold higher than the recommendation of 0.2 mg/m3 proposed by European Commission. The levels of CO2 were below the protective guideline of 2250 mg/m3 (Portuguese legislation); however, the observed ranges exceeded the Portuguese margin of tolerance (2925 mg/m3) at the end of school days, indicating the impact of occupancy rates particularly at one of the preschools. Regarding comfort parameters, temperature exerted a significant influence on O3 concentrations, while RH values were significantly correlated with TVOC levels in indoor air of preschools, particularly during the late afternoon periods.
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Affiliation(s)
- Marta Oliveira
- a REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto , Porto , Portugal
| | - Klara Slezakova
- a REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto , Porto , Portugal
- b LEPABE, Departamento de Engenharia Química , Faculdade de Engenharia, Universidade do Porto , Porto , Portugal
| | - Cristina Delerue-Matos
- a REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto , Porto , Portugal
| | - Maria do Carmo Pereira
- b LEPABE, Departamento de Engenharia Química , Faculdade de Engenharia, Universidade do Porto , Porto , Portugal
| | - Simone Morais
- a REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto , Porto , Portugal
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Barbosa F. Toxicology of metals and metalloids: Promising issues for future studies in environmental health and toxicology. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2017; 80:137-144. [PMID: 28277036 DOI: 10.1080/15287394.2016.1259475] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The function and behavior of chemical elements in ecosystems and in human health probably comprise one of the most studied issues and a theme of great interest and fascination in science. Hot topics are emerging on an annual basis in this field. Bearing this in mind, some promising themes to explore in the field of metals and metalloids in the environment and in toxicology are highlighted and briefly discussed herein.
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Affiliation(s)
- Fernando Barbosa
- a Laboratório de Toxicologia e Essencialidade de Metais, Faculdade de Ciências Farmacêuticas de Ribeirão Preto , Universidade de São Paulo , Ribeirão Preto , SP , Brazil
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11
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Paciência I, Madureira J, Rufo J, Moreira A, Fernandes EDO. A systematic review of evidence and implications of spatial and seasonal variations of volatile organic compounds (VOC) in indoor human environments. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2016; 19:47-64. [PMID: 27163962 DOI: 10.1080/10937404.2015.1134371] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Many volatile organic compounds (VOC) are classified as known or possible human carcinogens, irritants, and toxicants, and VOC exposure has been associated with asthma and other respiratory symptoms/diseases. This review summarizes recent quantitative data regarding VOC in four categories of indoor environments (schools, housing, offices, and other indoor) and compares the types and concentration levels of individual VOC that were detected, measured, and reported according to season (cold and warm). The influence of outdoor air on concentrations of indoor VOC was also assessed as ratios of indoor versus outdoor. Papers published from 2000 onward were reviewed and 1383 potentially relevant studies were identified. From these, 177 were removed after duplication, 1176 were excluded for not meeting the review criteria, and 40 were included in this review. On average, higher mean concentrations of indoor VOC were found in housing environments, in offices, and in the cold season. Volatile organic compounds are commonly present in indoor air and specific compounds, and their concentrations vary among indoor environments and seasons, indicating corresponding differences in sources (indoors and outdoors). Actions and policies to reduce VOC exposures, such as improved product labeling and consumer education, are recommended.
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Affiliation(s)
- Inês Paciência
- a Institute of Science and Innovation on Mechanical Engineering and Industrial Management , Porto , Portugal
- b Faculty of Medicine, University of Porto , Porto , Portugal
- c Portugal & Centro Hospitalar São João , Porto , Portugal
| | - Joana Madureira
- a Institute of Science and Innovation on Mechanical Engineering and Industrial Management , Porto , Portugal
| | - João Rufo
- a Institute of Science and Innovation on Mechanical Engineering and Industrial Management , Porto , Portugal
- b Faculty of Medicine, University of Porto , Porto , Portugal
- c Portugal & Centro Hospitalar São João , Porto , Portugal
| | - André Moreira
- b Faculty of Medicine, University of Porto , Porto , Portugal
- c Portugal & Centro Hospitalar São João , Porto , Portugal
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Wallace MAG, Kormos TM, Pleil JD. Blood-borne biomarkers and bioindicators for linking exposure to health effects in environmental health science. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2016; 19:380-409. [PMID: 27759495 PMCID: PMC6147038 DOI: 10.1080/10937404.2016.1215772] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Environmental health science aims to link environmental pollution sources to adverse health outcomes to develop effective exposure intervention strategies that reduce long-term disease risks. Over the past few decades, the public health community recognized that health risk is driven by interaction between the human genome and external environment. Now that the human genetic code has been sequenced, establishing this "G × E" (gene-environment) interaction requires a similar effort to decode the human exposome, which is the accumulation of an individual's environmental exposures and metabolic responses throughout the person's lifetime. The exposome is composed of endogenous and exogenous chemicals, many of which are measurable as biomarkers in blood, breath, and urine. Exposure to pollutants is assessed by analyzing biofluids for the pollutant itself or its metabolic products. New methods are being developed to use a subset of biomarkers, termed bioindicators, to demonstrate biological changes indicative of future adverse health effects. Typically, environmental biomarkers are assessed using noninvasive (excreted) media, such as breath and urine. Blood is often avoided for biomonitoring due to practical reasons such as medical personnel, infectious waste, or clinical setting, despite the fact that blood represents the central compartment that interacts with every living cell and is the most relevant biofluid for certain applications and analyses. The aims of this study were to (1) review the current use of blood samples in environmental health research, (2) briefly contrast blood with other biological media, and (3) propose additional applications for blood analysis in human exposure research.
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Affiliation(s)
- M Ariel Geer Wallace
- a Exposure Methods and Measurement Division, National Exposure Research Laboratory, Office of Research and Development , U.S. Environmental Protection Agency , Research Triangle Park , North Carolina , USA
| | | | - Joachim D Pleil
- a Exposure Methods and Measurement Division, National Exposure Research Laboratory, Office of Research and Development , U.S. Environmental Protection Agency , Research Triangle Park , North Carolina , USA
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Ryu SH, Kim YS, Jang HJ, Kim KB. Negligible Pharmacokinetic Interaction of Red Ginseng and Losartan, an Antihypertensive Agent, in Sprague-Dawley Rats. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2015; 78:1299-1309. [PMID: 26514876 DOI: 10.1080/15287394.2015.1085355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Red ginseng (RG) is one of the top selling herbal medicines in Korea, but is not recommended in hypertensive patients. In this study, the pharmacokinetic (PK) interaction between RG and losartan, an antihypertensive drug, was examined. RG was orally administered for 2 wk to male Sprague-Dawley (S-D) rats at either control (0), 0.5, 1, or 2 g/kg/d for 2 wk. After the last administration of RG and 30 min later, all animals were treated with 10 mg/kg losartan by oral route. In addition, some S-D rats were administered RG orally for 21 d at 2 g/kg followed by losartan intravenously (iv) at 10 mg/kg/d. Post losartan administration, plasma samples were collected at 5, 15, and 30 min and 1, 1.5, 2, 3, 6, 12, and 24 h. Plasma concentrations of losartan and E-3174, the active metabolite of losartan, were analyzed by a high-pressure liquid chromatography-tandem mass spectrometer system (LC-MS/MS). Oral losartan administration showed dose-dependent pharmacokinetics (PK) increase with time to maximum plasma, but this was not significant between different groups. There was no significant change in tmax with E-3174 PK. With iv losartan, pharmacokinetics showed elevation of area under the plasma concentration-time curve from time zero extrapolated to infinitity. There was not a significant change in AUCinf with E-3174 PK. Therefore, RG appeared to interfere with biotransformation of losartan, as RG exerted no marked effect on E-3174 PK in S-D rats. Data demonstrated that oral or iv treatment with losartan in rats pretreated with RG for 2 wk showed that losartan PK was affected but E-3174 PK remained unchanged among different dose groups. These results suggested that RG induces negligible influence on losartan and E-3174 PK in rats.
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Affiliation(s)
- Sung Ha Ryu
- a College of Pharmacy, Dankook University , Cheonan , Chungnam , Republic of Korea
- b Product Develop Team, R&D Center, GL PharmTech Corp. , Seongnam , Gyeonggi-do , Republic of Korea
| | - Yong Soon Kim
- c Botanical Drug Laboratory, R&D Headquarters, Korea Ginseng Corp. , Daejeon , Republic of Korea
- d Toxicity Research Team, Chemical Safety and Health Center, Yuseong-Gu , Daejeon , 34122 , Republic of Korea
| | - Hyun-Jun Jang
- a College of Pharmacy, Dankook University , Cheonan , Chungnam , Republic of Korea
| | - Kyu-Bong Kim
- a College of Pharmacy, Dankook University , Cheonan , Chungnam , Republic of Korea
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Brajenović N, Karačonji IB, Bulog A. Evaluation of Urinary Btex, Nicotine, and Cotinine as Biomarkers of Airborne Pollutants in Nonsmokers and Smokers. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2015; 78:1133-6. [PMID: 26460693 DOI: 10.1080/15287394.2015.1066286] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Benzene, toluene, ethylbenzene, and isomeric xylenes (BTEX) are by-products of tobacco smoke and traffic emissions. The aim of this study was to determine the contribution of cigarette smoking to urinary levels of BTEX present in humans. Nicotine and cotinine, biomarkers of exposure to tobacco smoke, as well as BTEX, were measured in urine of smokers (n = 70) and nonsmokers (n = 65) using headspace solid-phase microextraction (HS-SPME) followed by gas chromatography-mass spectrometry (GC-MS). In smokers, a significant correlation was found between urinary BTEX levels and nicotine and cotinine. In addition, significant regression models with nicotine and cotinine as predictors showed that BTEX in smokers' urine was predominantly derived from exposure to tobacco smoke. In nonsmokers a weak correlation between BTEX and nicotine and cotinine was found in urine. Further, there was a lack of significant contribution of BTEX to urinary nicotine and cotinine concentrations in nonsmokers. Thus, it was presumed that vehicle exhaust was the main source of exposure to BTEX in nonsmokers.
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Affiliation(s)
- Nataša Brajenović
- a Analytical Toxicology and Mineral Metabolism Unit , Institute for Medical Research and Occupational Health , Zagreb , Croatia
| | - Irena Brčić Karačonji
- a Analytical Toxicology and Mineral Metabolism Unit , Institute for Medical Research and Occupational Health , Zagreb , Croatia
| | - Aleksandar Bulog
- b Department of Environmental Health, Faculty of Medicine , University of Rijeka , Rijeka , Croatia
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