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Zahed MA, Salehi S, Khoei MA, Esmaeili P, Mohajeri L. Risk assessment of Benzene, Toluene, Ethyl benzene, and Xylene (BTEX) in the atmospheric air around the world: A review. Toxicol In Vitro 2024; 98:105825. [PMID: 38615724 DOI: 10.1016/j.tiv.2024.105825] [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: 08/12/2023] [Revised: 02/23/2024] [Accepted: 04/09/2024] [Indexed: 04/16/2024]
Abstract
Volatile organic compounds, such as BTEX, have been the subject of numerous debates due to their detrimental effects on the environment and human health. Human beings have had a significant role in the emergence of this situation. Even though US EPA, WHO, and other health-related organizations have set standard limits as unhazardous levels, it has been observed that within or even below these limits, constant exposure to these toxic chemicals results in negative consequences as well. According to these facts, various studies have been carried out all over the world - 160 of which are collected within this review article, so that experts and governors may come up with effective solutions to manage and control these toxic chemicals. The outcome of this study will serve the society to evaluate and handle the risks of being exposed to BTEX. In this review article, the attempt was to collect the most accessible studies relevant to risk assessment of BTEX in the atmosphere, and for the article to contain least bias, it was reviewed and re-evaluated by all authors, who are from different institutions and backgrounds, so that the insights of the article remain unbiased. There may be some limitations to consistency or precision in some points due to the original sources, however the attempt was to minimize them as much as possible.
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Affiliation(s)
| | - Samira Salehi
- Department of Health, Safety and Environment, Petropars Company, Tehran, Iran.
| | - Mahtab Akbarzadeh Khoei
- Department of Fiber and Particle Engineering, Faculty of Technology, Oulu University, Oulu, Finland
| | - Pedram Esmaeili
- Department of Fiber and Particle Engineering, Faculty of Technology, Oulu University, Oulu, Finland
| | - Leila Mohajeri
- Department of HSE, Ostovan Kish Drilling Company (OKDC), No. 148, Dastgerdi Street (Zafar), Tehran, Iran
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Straughen JK, Loveless I, Chen Y, Burmeister C, Lamerato L, Lemke LD, O’Leary BF, Reiners JJ, Sperone FG, Levin AM, Cassidy-Bushrow AE. The Impact of Environmental Benzene, Toluene, Ethylbenzene, and Xylene Exposure on Blood-Based DNA Methylation Profiles in Pregnant African American Women from Detroit. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2024; 21:256. [PMID: 38541258 PMCID: PMC10970495 DOI: 10.3390/ijerph21030256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 02/02/2024] [Accepted: 02/06/2024] [Indexed: 04/20/2024]
Abstract
African American women in the United States have a high risk of adverse pregnancy outcomes. DNA methylation is a potential mechanism by which exposure to BTEX (benzene, toluene, ethylbenzene, and xylenes) may cause adverse pregnancy outcomes. Data are from the Maternal Stress Study, which recruited African American women in the second trimester of pregnancy from February 2009 to June 2010. DNA methylation was measured in archived DNA from venous blood collected in the second trimester. Trimester-specific exposure to airshed BTEX was estimated using maternal self-reported addresses and geospatial models of ambient air pollution developed as part of the Geospatial Determinants of Health Outcomes Consortium. Among the 64 women with exposure and outcome data available, 46 differentially methylated regions (DMRs) were associated with BTEX exposure (FDR adjusted p-value < 0.05) using a DMR-based epigenome-wide association study approach. Overall, 89% of DMRs consistently exhibited hypomethylation with increasing BTEX exposure. Biological pathway analysis identified 11 enriched pathways, with the top 3 involving gamma-aminobutyric acid receptor signaling, oxytocin in brain signaling, and the gustation pathway. These findings highlight the potential impact of BTEX on DNA methylation in pregnant women.
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Affiliation(s)
- Jennifer K. Straughen
- Department of Public Health Sciences, Henry Ford Health, 1 Ford Place, Detroit, MI 48202, USA (L.L.); (A.M.L.); (A.E.C.-B.)
- Department of Obstetrics, Gynecology and Reproductive Biology, College of Human Medicine, Michigan State University, East Lansing, MI 48824, USA
- Henry Ford Health + Michigan State University Health Sciences, Detroit, MI 48202, USA
| | - Ian Loveless
- Department of Public Health Sciences, Henry Ford Health, 1 Ford Place, Detroit, MI 48202, USA (L.L.); (A.M.L.); (A.E.C.-B.)
| | - Yalei Chen
- Department of Public Health Sciences, Henry Ford Health, 1 Ford Place, Detroit, MI 48202, USA (L.L.); (A.M.L.); (A.E.C.-B.)
| | - Charlotte Burmeister
- Department of Public Health Sciences, Henry Ford Health, 1 Ford Place, Detroit, MI 48202, USA (L.L.); (A.M.L.); (A.E.C.-B.)
| | - Lois Lamerato
- Department of Public Health Sciences, Henry Ford Health, 1 Ford Place, Detroit, MI 48202, USA (L.L.); (A.M.L.); (A.E.C.-B.)
- Henry Ford Health + Michigan State University Health Sciences, Detroit, MI 48202, USA
| | - Lawrence D. Lemke
- Department of Earth and Atmospheric Sciences, Central Michigan University, Brooks Hall 314, Mount Pleasant, MI 48859, USA;
| | - Brendan F. O’Leary
- Department of Civil and Environmental Engineering, Wayne State University, 2100 Engineering Building, Detroit, MI 48202, USA; (B.F.O.); (F.G.S.)
- Department of Biology, Wayne State University, 5047 Gullen Mall, Detroit, MI 48202, USA
| | - John J. Reiners
- Center for Urban Responses to Environmental Stressors, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA;
- Institute of Environmental Health Sciences, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA
| | - F. Gianluca Sperone
- Department of Civil and Environmental Engineering, Wayne State University, 2100 Engineering Building, Detroit, MI 48202, USA; (B.F.O.); (F.G.S.)
- Department of Environmental Science and Geology, Wayne State University, 4841 Cass Avenue, Detroit, MI 48201, USA
| | - Albert M. Levin
- Department of Public Health Sciences, Henry Ford Health, 1 Ford Place, Detroit, MI 48202, USA (L.L.); (A.M.L.); (A.E.C.-B.)
- Henry Ford Health + Michigan State University Health Sciences, Detroit, MI 48202, USA
| | - Andrea E. Cassidy-Bushrow
- Department of Public Health Sciences, Henry Ford Health, 1 Ford Place, Detroit, MI 48202, USA (L.L.); (A.M.L.); (A.E.C.-B.)
- Henry Ford Health + Michigan State University Health Sciences, Detroit, MI 48202, USA
- Department of Pediatrics and Human Development, College of Human Medicine, Michigan State University, East Lansing, MI 48824, USA
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Fazakas E, Neamtiu IA, Gurzau ES. Health effects of air pollutant mixtures (volatile organic compounds, particulate matter, sulfur and nitrogen oxides) - a review of the literature. REVIEWS ON ENVIRONMENTAL HEALTH 2023; 0:reveh-2022-0252. [PMID: 36932657 DOI: 10.1515/reveh-2022-0252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 02/24/2023] [Indexed: 06/18/2023]
Abstract
The health risks associated with individual air pollutant exposures have been studied and documented, but in real-life, the population is exposed to a multitude of different substances, designated as mixtures. A body of literature on air pollutants indicated that the next step in air pollution research is investigating pollutant mixtures and their potential impacts on health, as a risk assessment of individual air pollutants may actually underestimate the overall risks. This review aims to synthesize the health effects related to air pollutant mixtures containing selected pollutants such as: volatile organic compounds, particulate matter, sulfur and nitrogen oxides. For this review, the PubMed database was used to search for articles published within the last decade, and we included studies assessing the associations between air pollutant mixtures and health effects. The literature search was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. A number of 110 studies were included in the review from which data on pollutant mixtures, health effects, methods used, and primary results were extracted. Our review emphasized that there are a relatively small number of studies addressing the health effects of air pollutants as mixtures and there is a gap in knowledge regarding the health effects associated with these mixtures. Studying the health effects of air pollutant mixtures is challenging due to the complexity of components that mixtures may contain, and the possible interactions these different components may have.
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Affiliation(s)
- Emese Fazakas
- Health Department, Environmental Health Center, Cluj-Napoca, Romania
- Faculty of Environmental Science and Engineering, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Iulia A Neamtiu
- Health Department, Environmental Health Center, Cluj-Napoca, Romania
- Faculty of Environmental Science and Engineering, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Eugen S Gurzau
- Health Department, Environmental Health Center, Cluj-Napoca, Romania
- Research Center for functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Jiménez-Garza O, Ghosh M, Barrow TM, Godderis L. Toxicomethylomics revisited: A state-of-the-science review about DNA methylation modifications in blood cells from workers exposed to toxic agents. Front Public Health 2023; 11:1073658. [PMID: 36891347 PMCID: PMC9986591 DOI: 10.3389/fpubh.2023.1073658] [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: 10/18/2022] [Accepted: 01/25/2023] [Indexed: 02/22/2023] Open
Abstract
Introduction Epigenetic marks have been proposed as early changes, at the subcellular level, in disease development. To find more specific biomarkers of effect in occupational exposures to toxicants, DNA methylation studies in peripheral blood cells have been performed. The goal of this review is to summarize and contrast findings about DNA methylation in blood cells from workers exposed to toxicants. Methods A literature search was performed using PubMed and Web of Science. After first screening, we discarded all studies performed in vitro and in experimental animals, as well as those performed in other cell types other than peripheral blood cells. Results: 116 original research papers met the established criteria, published from 2007 to 2022. The most frequent investigated exposures/labor group were for benzene (18.9%) polycyclic aromatic hydrocarbons (15.5%), particulate matter (10.3%), lead (8.6%), pesticides (7.7%), radiation (4.3%), volatile organic compound mixtures (4.3%), welding fumes (3.4%) chromium (2.5%), toluene (2.5%), firefighters (2.5%), coal (1.7%), hairdressers (1.7%), nanoparticles (1.7%), vinyl chloride (1.7%), and others. Few longitudinal studies have been performed, as well as few of them have explored mitochondrial DNA methylation. Methylation platforms have evolved from analysis in repetitive elements (global methylation), gene-specific promoter methylation, to epigenome-wide studies. The most reported observations were global hypomethylation as well as promoter hypermethylation in exposed groups compared to controls, while methylation at DNA repair/oncogenes genes were the most studied; studies from genome-wide studies detect differentially methylated regions, which could be either hypo or hypermethylated. Discussion Some evidence from longitudinal studies suggest that modifications observed in cross-sectional designs may be transitory; then, we cannot say that DNA methylation changes are predictive of disease development due to those exposures. Conclusion Due to the heterogeneity in the genes studied, and scarcity of longitudinal studies, we are far away from considering DNA methylation changes as biomarkers of effect in occupational exposures, and nor can we establish a clear functional or pathological correlate for those epigenetic modifications associated with the studied exposures.
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Affiliation(s)
- Octavio Jiménez-Garza
- Health Sciences Institute, Autonomous University of Hidalgo State, Pachuca Hidalgo, Mexico
| | - Manosij Ghosh
- Environment and Health Department, Katholieke Universiteit Leuven, Leuven, Belgium
| | - Timothy M Barrow
- Faculty of Health Sciences and Wellbeing, University of Sunderland, Sunderland, United Kingdom
| | - Lode Godderis
- Environment and Health Department, Katholieke Universiteit Leuven, Leuven, Belgium
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Noh SR, Kim JA, Cheong HK, Ha M, Jee YK, Park MS, Choi KH, Kim H, Cho SI, Choi K, Paek D. Exposure to Crude Oil-Related Volatile Organic Compounds Associated with Lung Function Decline in a Longitudinal Panel of Children. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:15599. [PMID: 36497672 PMCID: PMC9737835 DOI: 10.3390/ijerph192315599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/13/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Children in the affected area were exposed to large amounts of volatile organic compounds (VOCs) from the Hebei Spirit oil spill accident. OBJECTIVES We investigated the lung function loss from the exposure to VOCs in a longitudinal panel of 224 children 1, 3, and 5 years after the VOC exposure event. METHODS Atmospheric estimated concentration of total VOCs (TVOCs), benzene, toluene, ethylbenzene, and xylene for 4 days immediately after the accident were calculated for each village (n = 83) using a modeling technique. Forced expiratory volume in 1 s (FEV1) as an indicator of airway status was measured 1, 3, and 5 years after the exposure in 224 children 4~9 years of age at the exposure to the oil spill. Multiple linear regression and linear mixed models were used to evaluate the associations, with adjustment for smoking and second-hand smoke at home. RESULTS Among the TVOCs (geometric mean: 1319.5 mg/m3·4 d), xylene (9.4), toluene (8.5), ethylbenzene (5.2), and benzene (2.0) were dominant in the order of air concentration level. In 224 children, percent predicted FEV1 (ppFEV1), adjusted for smoking and second-hand smoke at home, was 100.7% after 1 year, 96.2% after 3 years, and 94.6% after 5 years, and the loss over the period was significant (p < 0.0001). After 1 and 3 years, TVOCs, xylene, toluene, and ethylbenzene were significantly associated with ppFEV1. After 5 years, the associations were not significant. Throughout the 5 years' repeated measurements in the panel, TVOCs, xylene, toluene, and ethylbenzene were significantly associated with ppFEV1. CONCLUSIONS Exposure to VOCs from the oil spill resulted in lung function loss among children, which remained significant up to 5 years after the exposure.
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Affiliation(s)
- Su Ryeon Noh
- Department of Public Health and Environment, Kosin University, 194 Wachi-ro, Yeongdo-gu, Busan 49104, Republic of Korea
| | - Jung-Ah Kim
- Department of Spatial & Environmental Planning, Chungnam Institute, 73-26 Yeonsuwon-gil, Gongju-si 32589, Republic of Korea
| | - Hae-Kwan Cheong
- Department of Social and Preventive Medicine, Sungkyunkwan University School of Medicine, 2066 Seobu-ro, Jangan-gu, Suwon-si 16419, Republic of Korea
| | - Mina Ha
- Department of Preventive Medicine, Dankook University College of Medicine, 119 Dandae-ro, Dongnam-gu, Cheonan-si 31116, Republic of Korea
| | - Young-Koo Jee
- Department of Internal Medicine, Dankook University College of Medicine, 119 Dandae-ro, Dongnam-gu, Cheonan-si 31116, Republic of Korea
| | - Myung-Sook Park
- Institute of Environmental Medicine, Seoul National University Medical Research Center, 103 Daehak-ro, Jongno-gu, Seoul 03080, Republic of Korea
| | - Kyung-Hwa Choi
- Department of Preventive Medicine, Dankook University College of Medicine, 119 Dandae-ro, Dongnam-gu, Cheonan-si 31116, Republic of Korea
| | - Ho Kim
- Department of Public Health Sciences, Graduate School of Public Health, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
- Institute of Health and Environment, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Sung-Il Cho
- Department of Public Health Sciences, Graduate School of Public Health, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
- Institute of Health and Environment, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Kyungho Choi
- Institute of Health and Environment, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Domyung Paek
- Institute of Health and Environment, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
- Division of Cancer Prevention, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang-si 10408, Republic of Korea
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Dynamic Measurement of VOCs with Multiple Characteristic Peaks Based on Temperature Modulation of ZnO Gas Sensor. CHEMOSENSORS 2022. [DOI: 10.3390/chemosensors10060226] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Volatile organic compounds (VOC) harm human health seriously in the air. Therefore, it is essential to recognize VOC gases qualitatively and quantitatively. The dynamic measurement method can improve the selectivity of metal oxide semiconductor (MOS) gas sensors to VOC, but there is a problem of the insufficient number of characteristic peaks. From the experimental point of view, the primary judgment basis for the correct qualitative and quantitative recognition of VOC gases by the dynamic measurement method is the characteristic peak of the dynamic response signal. However, the traditional dynamic measurement method generally only has two characteristic peaks. In this experiment, the voltage was changed at the time of the second characteristic peak by controlling the constant dynamic response period. Taking ethyl alcohol as an example, the experimental results show that the characteristic peak of the dynamic response signal does not increase when the voltage is constant. However, a new characteristic peak will appear based on a continuously rising heating voltage. The characteristic peaks of the dynamic response of n-propyl alcohol, isopropyl alcohol, and n-butyl alcohol were also increased based on the rising heating voltage waveform. Based on the K-Nearest-Neighbors algorithm, the qualitative and quantitative recognition rate of the four alcohol homologue gases reached 100%.
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Abstract
In order to investigate the seasonal variation in chemical characteristics of VOCs in the urban and suburban areas of southwest China, we used SUMMA canister sampling in Jinghong city from October 2016 to June 2017. Forty-eight VOC species concentrations were analyzed using atmospheric preconcentration gas chromatography–mass spectrometry (GC–MS), Then, regional VOC pollution characteristics, ozone formation potentials (OFP), source identity, and health risk assessments were studied. The results showed that the average concentration of total mass was 144.34 μg·m−3 in the urban area and 47.81 μg·m−3 in the suburban area. Alkanes accounted for the highest proportion of VOC groups at 38.11%, followed by olefins (36.60%) and aromatic hydrocarbons (25.28%). Propane and isoprene were the species with the highest mass concentrations in urban and suburban sampling sites. The calculation of OFP showed that the contributions of olefins and aromatic hydrocarbons were higher than those of alkanes. Through the ratio of specific species, the VOCs were mainly affected by motor vehicle exhaust emissions, fuel volatilization, vegetation emissions, and biomass combustion. Combined with the analysis of the backward trajectory model, biomass burning activities in Myanmar influenced the concentration of VOCs in Jinghong. Health risk assessments have shown that the noncarcinogenic risk and hazard index of atmospheric VOCs in Jinghong were low (less than 1). However, the value of the benzene cancer risk to the human body was higher than the safety threshold of 1 × 10−6, showing that benzene has carcinogenic risk. This study provides effective support for local governments formulating air pollution control policies.
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High Water Adsorption MOFs with Optimized Pore‐Nanospaces for Autonomous Indoor Humidity Control and Pollutants Removal. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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Emission Characteristics and Ozone Formation Potential Assessment of VOCs from Typical Metal Packaging Plants. ATMOSPHERE 2021. [DOI: 10.3390/atmos13010057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
With the rapid development of metal packaging, volatile organic compounds (VOCs) emissions from the packaging processes are also increasing gradually. It is necessary to research the characteristics of VOCs emissions from such important industrial source and its impact on the possible ozone formation. In this research, three typical metal packaging plants were selected, VOCs emission characteristics were investigated, and their ozone formation potential were evaluated by using maximum incremental reactivity (MIR) coefficient method. The results showed that the VOCs emission characteristics of the selected targets were obviously different. VOCs emitted from plant A and B were mainly oxygenated hydrocarbons, which accounted for 85.02% and 43.17%, respectively. Olefins (62.75%) were the main species of plant C. 2-butanone (82.67%), methylene chloride (23.00%) and ethylene (36.67%) were the major species of plant A, plant B and plant C, respectively. The OFP (ozone formation potential) value of plant B (120.49 mg/m3) was much higher than those values of plant A (643.05 mg/m3) and plant C (3311.73 mg/m3), in which para-xylene, meta-xylene, acetaldehyde and ethylene were the main contributors. The difference in OFP values indicated that water-based ink and water-based coatings should be recommended for large scale application due to less VOCs emission and low ozone formation contribution.
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Zhu NX, Wei ZW, Chen CX, Xiong XH, Xiong YY, Zeng Z, Wang W, Jiang JJ, Fan YN, Su CY. High Water Adsorption MOFs with Optimized Pore-Nanospaces for Autonomous Indoor Humidity Control and Pollutants Removal. Angew Chem Int Ed Engl 2021; 61:e202112097. [PMID: 34779556 DOI: 10.1002/anie.202112097] [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] [Received: 09/06/2021] [Indexed: 01/15/2023]
Abstract
The indoor air quality is of prime importance for human daily life and health, for which the adsorbents like zeolites and silica-gels are widely used for air dehumidification and harmful gases capture. Herein, we develop a pore-nanospace post-engineering strategy to optimize the hydrophilicity, water-uptake capacity and air-purifying ability of metal-organic frameworks (MOFs) with long-term stability, offering an ideal candidate with autonomous multi-functionality of moisture control and pollutants sequestration. Through variant tuning of organic-linkers carrying hydrophobic and hydrophilic groups in the pore-nanospaces of prototypical UiO-67, a moderately hydrophilic MOF (UiO-67-4Me-NH2 -38 %) with high thermal, hydrolytic and acid-base stability is screened out, featuring S-shaped water sorption isotherms exactly located in the recommended comfortable and healthy ranges of relative humidity for indoor ventilation (45 %-65 % RH) and adverse health effects minimization (40-60 % RH). Its exceptional attributes of water-uptake working capacity/efficiency, contaminants removal, recyclability and regeneration promise a great potential in confined indoor environment application.
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Affiliation(s)
- Neng-Xiu Zhu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Zhang-Wen Wei
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Cheng-Xia Chen
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Xiao-Hong Xiong
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Yang-Yang Xiong
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Zheng Zeng
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Wei Wang
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Ji-Jun Jiang
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Ya-Nan Fan
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Cheng-Yong Su
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China.,State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, China
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Wu Y, Qie R, Cheng M, Zeng Y, Huang S, Guo C, Zhou Q, Li Q, Tian G, Han M, Zhang Y, Wu X, Li Y, Zhao Y, Yang X, Feng Y, Liu D, Qin P, Hu D, Hu F, Xu L, Zhang M. Air pollution and DNA methylation in adults: A systematic review and meta-analysis of observational studies. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 284:117152. [PMID: 33895575 DOI: 10.1016/j.envpol.2021.117152] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 04/04/2021] [Accepted: 04/05/2021] [Indexed: 05/24/2023]
Abstract
This systematic review and meta-analysis aimed to investigate the association between air pollution and DNA methylation in adults from published observational studies. PubMed, Web of Science and Embase databases were systematically searched for available studies on the association between air pollution and DNA methylation published up to March 9, 2021. Three DNA methylation approaches were considered: global methylation, candidate-gene, and epigenome-wide association studies (EWAS). Meta-analysis was used to summarize the combined estimates for the association between air pollutants and global DNA methylation levels. Heterogeneity was assessed with the Cochran Q test and quantified with the I2 statistic. In total, 38 articles were included in this study: 16 using global methylation, 18 using candidate genes, and 11 using EWAS, with 7 studies using more than one approach. Meta-analysis revealed an imprecise but inverse association between exposure to PM2.5 and global DNA methylation (for each 10-μg/m3 PM2.5, combined estimate: 0.39; 95% confidence interval: 0.97 - 0.19). The candidate-gene results were consistent for the ERCC3 and SOX2 genes, suggesting hypermethylation in ERCC3 associated with benzene and that in SOX2 associated with PM2.5 exposure. EWAS identified 201 CpG sites and 148 differentially methylated regions that showed differential methylation associated with air pollution. Among the 307 genes investigated in 11 EWAS, a locus in nucleoredoxin gene was found to be positively associated with PM2.5 in two studies. Current meta-analysis indicates that PM2.5 is imprecisely and inversely associated with DNA methylation. The candidate-gene results consistently suggest hypermethylation in ERCC3 associated with benzene exposure and that in SOX2 associated with PM2.5 exposure. The Kyoto Encyclopedia of Genes and Genomes (KEGG) network analyses revealed that these genes were associated with African trypanosomiasis, Malaria, Antifolate resistance, Graft-versus-host disease, and so on. More evidence is needed to clarify the association between air pollution and DNA methylation.
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Affiliation(s)
- Yuying Wu
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China; Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Ranran Qie
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Min Cheng
- Department of Cardiology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Yunhong Zeng
- Center for Health Management, The Affiliated Shenzhen Hospital of University of Chinese Academy of Sciences, Shenzhen, Guangdong, People's Republic of China
| | - Shengbing Huang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Chunmei Guo
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Qionggui Zhou
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China; Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Quanman Li
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Gang Tian
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Minghui Han
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Yanyan Zhang
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China; Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Xiaoyan Wu
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China; Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Yang Li
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China; Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Yang Zhao
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Xingjin Yang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Yifei Feng
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Dechen Liu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Pei Qin
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China; Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Dongsheng Hu
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China; Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China; Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Fulan Hu
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China; Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Lidan Xu
- Department of Nutrition, The Second Affiliated Hospital, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Ming Zhang
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China; Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China.
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12
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da Silva THG, Gastaldi AC, Santos MK, de Martinis BS, Baddini-Martinez J. Induced sputum abnormalities in gas station attendants. Int Arch Occup Environ Health 2021; 95:341-349. [PMID: 34435248 DOI: 10.1007/s00420-021-01755-2] [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: 02/05/2021] [Accepted: 07/01/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE To investigate inflammatory changes in the induced sputum (IS) of gas station attendants (GSAs) at risk of exposure to fuel vapors through inhalation and susceptible to respiratory complaints and impaired lung function. METHODS Hypertonic saline-IS was collected from 52 GSAs who had never smoked (42 men, age = 35.9 ± 8.9 years) and had no known comorbidities. A group of 22 non-smokers (11 men, age = 30.5 ± 5.1 years) selected from the University staff served as control. The GSAs answered a questionnaire and underwent spirometry and chest tomography. A total of 15 inflammatory biomarkers associated with inflammation, including cytokines, chemokines, and mediators of immunological response, were also measured. RESULTS The most common symptoms of GSAs were coughing (42.3%) and dyspnea (59.6%) based on the New York Heart Association (NYHA; Class II) classification. Significant elevations (p < 0.05) in forced vital capacity and forced expiratory volume within the first second were observed in the GSAs relative to those in the controls (GSA vs. control: 99 ± 12% vs. 90 ± 9% and 94 ± 11% vs. 87 ± 10%, respectively). The GSAs had a lower percentage of IS lymphocytes than that in the control group (4.5 ± 5.7% vs. 7.7 ± 9.8%). The GSAs also had significantly lower concentrations of IL-4, IL-5, IL-10, IL-12P70, IFN-γ, and MIP-1α, but IL-3 levels were higher. No differences were observed in the airway thickness and the amount of emphysema between the GSAs and the controls. CONCLUSION Despite normal lung function and absence of abnormalities on HRCT, GSAs have a higher frequency of respiratory complaints, with evidence of impairment of lymphocytic activity in the airways.
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Affiliation(s)
- Tiago Henrique Garcia da Silva
- Internal Medicine Department. Medical School of Ribeirão Preto, University of São Paulo, Avenida Bandeirantes 3900, Ribeirao Preto, SP, 14048-900, Brazil
| | - Ada Clarice Gastaldi
- Department of Health Sciences, Medical School of Ribeirão Preto, University of São Paulo, Ribeirao Preto, SP, Brazil
| | - Marcel Koenigkam Santos
- Department of Medical Imaging, Hematology and Oncology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirao Preto, SP, Brazil
| | - Bruno Spinosa de Martinis
- Department of Chemistry, Faculty of Philosophy, Science and Languages of Ribeirão Preto, University of São Paulo, Ribeirao Preto, SP, Brazil
| | - José Baddini-Martinez
- Internal Medicine Department. Medical School of Ribeirão Preto, University of São Paulo, Avenida Bandeirantes 3900, Ribeirao Preto, SP, 14048-900, Brazil.
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Exposure to Fine Particulate Matter Air Pollution Alters mRNA and miRNA Expression in Bone Marrow-Derived Endothelial Progenitor Cells from Mice. Genes (Basel) 2021; 12:genes12071058. [PMID: 34356074 PMCID: PMC8307414 DOI: 10.3390/genes12071058] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/05/2021] [Accepted: 07/07/2021] [Indexed: 12/14/2022] Open
Abstract
Exposure to fine particulate matter (PM2.5) air pollution is associated with quantitative deficits of circulating endothelial progenitor cells (EPCs) in humans. Related exposures of mice to concentrated ambient PM2.5 (CAP) likewise reduces levels of circulating EPCs and induces defects in their proliferation and angiogenic potential as well. These changes in EPC number or function are predictive of larger cardiovascular dysfunction. To identify global, PM2.5-dependent mRNA and miRNA expression changes that may contribute to these defects, we performed a transcriptomic analysis of cells isolated from exposed mice. Compared with control samples, we identified 122 upregulated genes and 44 downregulated genes in EPCs derived from CAP-exposed animals. Functions most impacted by these gene expression changes included regulation of cell movement, cell and tissue development, and cellular assembly and organization. With respect to miRNA changes, we found that 55 were upregulated while 53 were downregulated in EPCs from CAP-exposed mice. The top functions impacted by these miRNA changes included cell movement, cell death and survival, cellular development, and cell growth and proliferation. A subset of these mRNA and miRNA changes were confirmed by qRT-PCR, including some reciprocal relationships. These results suggest that PM2.5-induced changes in gene expression may contribute to EPC dysfunction and that such changes may contribute to the adverse cardiovascular outcomes of air pollution exposure.
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14
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Mueller S, Dennison G, Liu S. An Assessment on Ethanol-Blended Gasoline/Diesel Fuels on Cancer Risk and Mortality. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:6930. [PMID: 34203568 PMCID: PMC8297295 DOI: 10.3390/ijerph18136930] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/28/2021] [Accepted: 06/13/2021] [Indexed: 12/23/2022]
Abstract
Although cancer is traditionally considered a genetic disease, the epigenetic abnormalities, including DNA hypermethylation, histone deacetylation, and/or microRNA dysregulation, have been demonstrated as a hallmark of cancer. Compared with gene mutations, aberrant epigenetic changes occur more frequently, and cellular epigenome is more susceptible to change by environmental factors. Excess cancer risks are positively associated with exposure to occupational and environmental chemical carcinogens, including those from gasoline combustion exhausted in vehicles. Of note, previous studies proposed particulate matter index (PMI) as a measure for gasoline sooting tendency, and showed that, compared with the other molecules in gasoline, 1,2,4-Trimethylbenzene, 2-methylnaphthalene and toluene significantly contribute to PMI of the gasoline blends. Mechanistically, both epigenome and genome are important in carcinogenicity, and the genotoxicity of chemical agents has been thoroughly studied. However, less effort has been put into studying the epigenotoxicity. Moreover, as the blending of ethanol into gasoline substitutes for carcinogens, like benzene, toluene, xylene, butadiene, and polycyclic aromatic hydrocarbons, etc., a reduction of secondary aromatics has been achieved in the atmosphere. This may lead to diminished cancer initiation and progression through altered cellular epigenetic landscape. The present review summarizes the most important findings in the literature on the association between exposures to carcinogens from gasoline combustion, cancer epigenetics and the potential epigenetic impacts of biofuels.
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Affiliation(s)
- Steffen Mueller
- Energy Resources Center, The University of Illinois at Chicago, Chicago, IL 60607, USA;
| | - Gail Dennison
- The Hormel Institute, University of Minnesota, Austin, MN 55912, USA;
| | - Shujun Liu
- The Hormel Institute, University of Minnesota, Austin, MN 55912, USA;
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15
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Epigenetic Effects of Benzene in Hematologic Neoplasms: The Altered Gene Expression. Cancers (Basel) 2021; 13:cancers13102392. [PMID: 34069279 PMCID: PMC8156840 DOI: 10.3390/cancers13102392] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/06/2021] [Accepted: 05/11/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Benzene is produced by diverse petroleum transformation processes and it is widely employed in industry despite its oncogenic effects. In fact, occupational exposure to benzene may cause hematopoietic malignancy. The leukemogenic action of benzene is particularly complex. Possible processes of onset of hematological malignancies have been recognized as a genotoxic action and the provocation of immunosuppression. However, benzene can induce modifications that do not involve alterations in the DNA sequence, the so-called epigenetics changes. Acquired epigenetic modification may also induce leukemogenesis, as benzene may alter nuclear receptors, and cause changes at the protein level, thereby modifying the function of regulatory proteins, including oncoproteins and tumor suppressor proteins. Abstract Benzene carcinogenic ability has been reported, and chronic exposure to benzene can be one of the risk elements for solid cancers and hematological neoplasms. Benzene is acknowledged as a myelotoxin, and it is able to augment the risk for the onset of acute myeloid leukemia, myelodysplastic syndromes, aplastic anemia, and lymphomas. Possible mechanisms of benzene initiation of hematological tumors have been identified, as a genotoxic effect, an action on oxidative stress and inflammation and the provocation of immunosuppression. However, it is becoming evident that genetic alterations and the other causes are insufficient to fully justify several phenomena that influence the onset of hematologic malignancies. Acquired epigenetic alterations may participate with benzene leukemogenesis, as benzene may affect nuclear receptors, and provoke post-translational alterations at the protein level, thereby touching the function of regulatory proteins, comprising oncoproteins and tumor suppressor proteins. DNA hypomethylation correlates with stimulation of oncogenes, while the hypermethylation of CpG islands in promoter regions of specific tumor suppressor genes inhibits their transcription and stimulates the onset of tumors. The discovery of the systems of epigenetic induction of benzene-caused hematological tumors has allowed the possibility to operate with pharmacological interventions able of stopping or overturning the negative effects of benzene.
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Dwivedi S, Kushalan S, Paithankar JG, D'Souza LC, Hegde S, Sharma A. Environmental toxicants, oxidative stress and health adversities: interventions of phytochemicals. J Pharm Pharmacol 2021; 74:516-536. [PMID: 33822130 DOI: 10.1093/jpp/rgab044] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 02/17/2021] [Indexed: 12/17/2022]
Abstract
OBJECTIVES Oxidative stress is the most common factor mediating environmental chemical-induced health adversities. Recently, an exponential rise in the use of phytochemicals as an alternative therapeutics against oxidative stress-mediated diseases has been documented. Due to their free radical quenching property, plant-derived natural products have gained substantial attention as a therapeutic agent in environmental toxicology. The present review aimed to describe the therapeutic role of phytochemicals in mitigating environmental toxicant-mediated sub-cellular and organ toxicities via controlling cellular antioxidant response. METHODS The present review has covered the recently related studies, mainly focussing on the free radical scavenging role of phytochemicals in environmental toxicology. KEY FINDINGS In vitro and in vivo studies have reported that supplementation of antioxidant-rich compounds can ameliorate the toxicant-induced oxidative stress, thereby improving the health conditions. Improving the cellular antioxidant pool has been considered as a mode of action of phytochemicals. However, the other cellular targets of phytochemicals remain uncertain. CONCLUSIONS Knowing the therapeutic value of phytochemicals to mitigate the chemical-induced toxicity is an initial stage; mechanistic understanding needs to decipher for development as therapeutics. Moreover, examining the efficacy of phytochemicals against mixer toxicity and identifying the bioactive molecule are major challenges in the field.
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Affiliation(s)
- Shiwangi Dwivedi
- Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Division of Environmental Health and Toxicology, Deralakatte, Mangaluru, India
| | - Sharanya Kushalan
- Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Division of Bioresource and Biotechnology, Deralakatte, Mangaluru, India
| | - Jagdish Gopal Paithankar
- Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Division of Environmental Health and Toxicology, Deralakatte, Mangaluru, India
| | - Leonard Clinton D'Souza
- Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Division of Environmental Health and Toxicology, Deralakatte, Mangaluru, India
| | - Smitha Hegde
- Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Division of Bioresource and Biotechnology, Deralakatte, Mangaluru, India
| | - Anurag Sharma
- Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Division of Environmental Health and Toxicology, Deralakatte, Mangaluru, India
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Ren JC, Wang T, Wu H, Zhang GH, Sun D, Guo K, Li H, Zhang F, Wu W, Xia ZL. Promoter hypermethylation in CSF3R induces peripheral neutrophil reduction in benzene-exposure poisoning. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2020; 61:786-796. [PMID: 32329128 DOI: 10.1002/em.22382] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/22/2020] [Accepted: 04/19/2020] [Indexed: 06/11/2023]
Abstract
Benzene is a global pollutant and has been established to cause leukemia. To better understand the role of DNA methylation in benzene toxicity, peripheral blood mononuclear cells were collected from six benzene-poisoning patients and six matched controls for genome-wide DNA methylation screening by Illumina Infinium Methylation 450 BeadChip. The Gene Chip Human Gene 2.0 ST Array (Affymetrix) was used to analyze global mRNA expression. Compared with the corresponding sites of controls, 442 sites in patients were hypermethylated, corresponding to 253 genes, and 237 sites were hypomethylated, corresponding to 130 genes. The promoter methylation and mRNA expression of CSF3R, CREB5, and F2R were selected for verification by bisulfite sequencing and real-time PCR in a larger data set with 21 cases and 23 controls. The results indicated that promoter methylation of CSF3R (p = .005) and F2R (p = .015) was significantly higher in cases than in controls. Correlation analysis showed that the promoter methylation of CSF3R (p < .001) and F2R (p < .001) was highly correlated with its mRNA expression. In the poisoning cases, neutrophil percentage was significantly different among the high, middle, and low CSF3R-methylation groups (p = .002). In particular, the neutrophil percentage in the high CSF3R-methylation group (48.10 ± 9.63%) was significantly lower than that in the low CSF3R-methylation group (59.30 ± 6.26%) (p = .012). The correlation coefficient between promoter methylation in CSF3R and the neutrophil percentage was -0.445 (p = .020) in cases and - 0.398 (p = .060) in controls. These results imply that hypermethylation occurs in the CSF3R promoter due to benzene exposure and is significantly associated with a reduction in neutrophils.
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Affiliation(s)
- Jing-Chao Ren
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Tongshuai Wang
- Department of Occupational Health and Toxicology, School of Public Health, Fudan University, Shanghai, China
| | - Hantian Wu
- Department of Occupational Health and Toxicology, School of Public Health, Fudan University, Shanghai, China
| | - Guang-Hui Zhang
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Daoyuan Sun
- Tongji University Affiliated Shanghai Pulmonary Hospital, Shanghai, China
| | - Kongrong Guo
- Tongji University Affiliated Shanghai Pulmonary Hospital, Shanghai, China
| | - Haibin Li
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Fengquan Zhang
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Weidong Wu
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Zhao-Lin Xia
- Department of Occupational Health and Toxicology, School of Public Health, Fudan University, Shanghai, China
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Jia L, Chu J, Li J, Ren J, Huang P, Li D. Formaldehyde and VOC emissions from plywood panels bonded with bio-oil phenolic resins. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 264:114819. [PMID: 32559879 DOI: 10.1016/j.envpol.2020.114819] [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: 02/11/2020] [Revised: 05/08/2020] [Accepted: 05/14/2020] [Indexed: 06/11/2023]
Abstract
Pyrolysis bio-oil was used to partially substitute for phenol in reacting with formaldehyde for the production of bio-oil phenol formaldehyde plywood (BPFP) panels, with the phenol substitution ratio being 20%, 40%, or 60%. Emissions of formaldehyde and volatile organic compounds (VOCs) from the BPFP panels were studied using solid-phase micro-extraction (SPME) followed by headspace gas chromatography/mass spectrometry (GC/MS), and were compared to those from the phenol formaldehyde plywood (PFP) panels. The sources for VOCs were analyzed, and the health risks associated with the BPFP were examined. Results showed that at 80 °C: (1) Formaldehyde emissions from the BPFP panels were increased to about 4 times that of PFP; (2) VOCs emissions were significantly reduced by up to 84.9% mainly due to the greatly reduced phenol emissions, although the total number of VOCs was increased from 20 to 35; (3) BPFP presents greatly increased carcinogenic and non-carcinogenic health risks because of its much stronger emissions of formaldehyde, N,N-dimethylformamide, benzofuran, furfural, and many chemicals from the bio-oil. It is highly advisable that the health risks are properly taken care of before the wide application of BPFP, or similar bio-oil based engineered wood products.
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Affiliation(s)
- Liangliang Jia
- Key Comprehensive Laboratory of Forestry, Shaanxi Province, China; College of Forestry, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Jie Chu
- Key Comprehensive Laboratory of Forestry, Shaanxi Province, China; College of Forestry, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Jing Li
- Key Comprehensive Laboratory of Forestry, Shaanxi Province, China; College of Forestry, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Jing Ren
- Key Comprehensive Laboratory of Forestry, Shaanxi Province, China; College of Forestry, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Ping Huang
- Key Comprehensive Laboratory of Forestry, Shaanxi Province, China; College of Forestry, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Dongbing Li
- Key Comprehensive Laboratory of Forestry, Shaanxi Province, China; College of Forestry, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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Ruiz-García L, Figueroa-Vega N, Malacara JM, Barrón-Vivanco B, Salamon F, Carrieri M, Jiménez-Garza O. Possible role of n-hexane as an endocrine disruptor in occupationally exposed women at reproductive age. Toxicol Lett 2020; 330:73-79. [PMID: 32439582 DOI: 10.1016/j.toxlet.2020.04.022] [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] [Received: 09/19/2019] [Revised: 04/16/2020] [Accepted: 04/28/2020] [Indexed: 02/04/2023]
Abstract
Human exposure to n-hexane has been associated with subfertility and, experimentally, with a decrease in follicular development. In order to assess occupational exposure to n-hexane on ovarian function and gonadotropic hormones, we studied Mexican women labouring in a leather shoe factory (n = 34). Individual environmental levels for seven solvents, n-hexane included, were measured; also, urinary 2,5-hexanedione (2,5-HD) was determined. For ovarian function and hormonal status, FSH, LH, oestradiol and anti-Müllerian hormone (AMH) levels were determined. We performed all determinations also in a reference group, administrative workers with no exposure to solvents (n = 32). Results: N-hexane and urinary 2,5-HD levels were higher in exposed group (p < 0.001). More cases of oligomenorrhea as well as longer time for getting pregnant were observed in exposed women compared with controls; a positive association was found between menstrual cycle length and "time for getting pregnant" (p = 0.010); significant associations between FSH serum levels and 2,5-HD urinary levels (post-shift sample) were observed in non-smokers participants presenting oligomenorrhea from exposed group. Also, we found a trend for lower oestradiol levels in exposed participants with current smoking habit (p = 0.059). Conclusions: 2,5-HD urinary levels are associated with decreased gonadotropins levels; hence, n-hexane should be considered an endocrine disruptor in reproductive-age women.
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Affiliation(s)
- Liliana Ruiz-García
- Health Sciences Division, University of Guanajuato, Campus León, Blvd. Puente del Milenio 1001. Fracción del Predio San Carlos, León Guanajuato, C.P 37670, Mexico
| | - Nicté Figueroa-Vega
- Medical Sciences Department, Health Sciences Division, University of Guanajuato, Campus León, 20 de enero #929, center, C.P 37320, León, Guanajuato, Mexico
| | - Juan M Malacara
- Medical Sciences Department, Health Sciences Division, University of Guanajuato, Campus León, 20 de enero #929, center, C.P 37320, León, Guanajuato, Mexico
| | - Briscia Barrón-Vivanco
- Laboratory of Environmental Toxicology and Pollution, Autonomous University of Nayarit, Av de la Cultura Amado Nervo S/N, CP 36000 Tepic, Nayarit, Mexico
| | - Fabiola Salamon
- Department of Cardiologic, Thoracic, Vascular Sciences and Public Health, University of Padova, Via Giustiniani 2, C.P 35128, Padua, Italy
| | - Mariella Carrieri
- Department of Cardiologic, Thoracic, Vascular Sciences and Public Health, University of Padova, Via Giustiniani 2, C.P 35128, Padua, Italy
| | - Octavio Jiménez-Garza
- Health Sciences Division, University of Guanajuato, Campus León, Blvd. Puente del Milenio 1001. Fracción del Predio San Carlos, León Guanajuato, C.P 37670, Mexico.
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20
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Gutierrez-Villagomez JM, Vázquez-Martínez J, Ramírez-Chávez E, Molina-Torres J, Trudeau VL. Profiling low molecular weight organic compounds from naphthenic acids, acid extractable organic mixtures, and oil sands process-affected water by SPME-GC-EIMS. JOURNAL OF HAZARDOUS MATERIALS 2020; 390:122186. [PMID: 32006852 DOI: 10.1016/j.jhazmat.2020.122186] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 01/06/2020] [Accepted: 01/23/2020] [Indexed: 05/24/2023]
Abstract
Naphthenic acids (NAs) are complex mixtures of carboxylic acids from petroleum that have industrial applications and that may be released to the environment after oil spills. There is significant research on the chemical composition and toxicity of water-soluble NAs derived from oil sands mining in Alberta, Canada. Yet, little is known about low molecular weight organic compounds (LMWOC) from these sources. Headspace solid-phase microextraction coupled to gas chromatography-electron impact mass spectrometry was used for LMWOC profiling of commercial NA blends, and an acid-extractable organics (AEOs) mixture from a tailings pond. From Sigma 1, Sigma 2, Merichem NAs and the AEO extract, 54, 56, 40 and 4 compounds were identified, respectively. These include aliphatic and cyclic hydrocarbons, carboxylic acids, alkylbenzenes, phenols, naphthalene and alkyl-naphthalene, and decalin compounds. A sample of oil sands process-affected water (OSPW) and aqueous solutions of the NA blends were evaluated for matrix effects on LMWOC profiles. Principal component and clustering analyses revealed that LMWOC profiles of commercial extracts were closely related but distinct from the AEO and OSPW samples. Some of the identified LMWOC are reported to be genotoxic or carcinogenic, and therefore the NA mixtures and AEOs should be considered hazardous materials and further evaluated.
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Affiliation(s)
| | - Juan Vázquez-Martínez
- Departamento de Ingeniería Bioquímica, Instituto Tecnológico Superior de Irapuato (ITESI), Tecnológico Nacional de México (TecNM), Carretera Irapuato - Silao km 12.5 Colonia El Copal, Irapuato, Guanajuato, Mexico; Departamento de Biotecnología y Bioquímica, CINVESTAV Unidad Irapuato, Guanajuato, 36824, Mexico
| | - Enrique Ramírez-Chávez
- Departamento de Biotecnología y Bioquímica, CINVESTAV Unidad Irapuato, Guanajuato, 36824, Mexico
| | - Jorge Molina-Torres
- Departamento de Biotecnología y Bioquímica, CINVESTAV Unidad Irapuato, Guanajuato, 36824, Mexico
| | - Vance L Trudeau
- Department of Biology, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada.
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21
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Jiménez-Garza O, Linares-Segovia B, Ruiz-García L, Monroy-Torres R, Hernández-Luna MA. 5'UTR methylation in different genes from workers exposed to volatile organic compounds: A new insight for considering an epigenetic mark as a functional correlate. Toxicol Lett 2020; 330:59-64. [PMID: 32437847 DOI: 10.1016/j.toxlet.2020.05.001] [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: 11/01/2019] [Revised: 04/28/2020] [Accepted: 05/03/2020] [Indexed: 11/17/2022]
Abstract
Gene-specific methylation has been related with transcriptional/translational consequences in different cells; also, this epigenetic modification is affected by environmental exposures. In previous studies, CYP2E1 activity in toluene-exposed workers was decreased compared to controls, however, CYP2E1 promoter methylation levels did not show significant differences. Here, we compared gene-specific methylation levels at the 5'UTR region, in a subset of workers whom already participated in two former studies, compared to controls. METHODS DNA was obtained from whole blood in five different groups: occupationally exposed to a mixture of volatile organic compounds (VOC): high levels (n = 19); low levels (n = 19) and very low levels (n = 17), toluene-exposed workers (n = 19) and control group (n = 19). We performed PCR-pyrosequencing at the 5'UTR region from four genes: CYP2E1, IL-6, SOD1 and TNF-α. RESULTS In participants exposed to high levels of a VOC mixture, we found significant differences: lower methylation levels for IL-6, and higher methylation levels for TNF-α compared to controls. In toluene-exposed workers, we found significant, lower methylation levels for CYP2E1 compared to controls. CONCLUSION Lower methylation levels at the 5'UTR region from CYP2E1 in toluene exposed-workers, suggests that this epigenetic modification could represent a functional correlate regarding enzymatic activity, as a response to toluene biotransformation.
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Affiliation(s)
- Octavio Jiménez-Garza
- Health Sciences Division, University of Guanajuato, León Campus. Blvd. Puente del Milenio, 1001 Fracc. Del Predio San Carlos, CP 37670, León, Guanajuato, Mexico.
| | - Benigno Linares-Segovia
- Health Sciences Division, University of Guanajuato, León Campus. Blvd. Puente del Milenio, 1001 Fracc. Del Predio San Carlos, CP 37670, León, Guanajuato, Mexico
| | - Liliana Ruiz-García
- Health Sciences Division, University of Guanajuato, León Campus. Blvd. Puente del Milenio, 1001 Fracc. Del Predio San Carlos, CP 37670, León, Guanajuato, Mexico
| | - Rebeca Monroy-Torres
- Health Sciences Division, University of Guanajuato, León Campus. Blvd. Puente del Milenio, 1001 Fracc. Del Predio San Carlos, CP 37670, León, Guanajuato, Mexico
| | - Marco Antonio Hernández-Luna
- Health Sciences Division, University of Guanajuato, León Campus. Blvd. Puente del Milenio, 1001 Fracc. Del Predio San Carlos, CP 37670, León, Guanajuato, Mexico
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Barkhordari S, Mirmosayyeb O, Mansourian M, Hosseininasab F, Ramezani S, Barzegar M, Amin MM, Poursafa P, Esmaeil N, Kelishadi R. Omega 3 Supplementation Can Regulate Inflammatory States in Gas Station Workers: A Double-Blind Placebo-Controlled Clinical Trial. J Interferon Cytokine Res 2020; 40:262-267. [PMID: 32176565 DOI: 10.1089/jir.2019.0220] [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] [Indexed: 12/31/2022] Open
Abstract
Environmental exposure to diesel particulate matter and commercial gasoline in gas station workers might induce oxidative stress and changes in the balance of the immune system. In this study, the immunomodulatory impacts of omega 3 fatty acid (ω3FA) supplement were assessed on inflammatory and anti-inflammatory markers in gas station workers in a double-blind placebo-controlled clinical trial. Fifty-three men working in gas stations were treated with ω3FA (n = 29) or placebo (n = 24) for 60 days. C-reactive protein, interleukin-12 (IL-12), transforming growth factor β (TGF-β), interferon γ (IFN-γ), tumor necrosis factor α, IL-10, and IL-17 levels were measured by enzyme-linked immunosorbent assay method before and after the completion of the trial. The concentrations of IFN-γ and IL-17 were significantly decreased in ω3FA group compared with the placebo group (P < 0.001). Moreover, the levels of inhibitory cytokines including TGF-β and IL-10 significantly were increased in ω3FA group (P < 0.001). Overall, ω3FA nutritional supplementation can be useful in reducing inflammatory immune responses and maintaining immune tolerance in people with high exposure to inflammation-inducing factors. [Figure: see text].
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Affiliation(s)
- Shoresh Barkhordari
- Student Research Committee, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.,Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Omid Mirmosayyeb
- Isfahan Neurosciences Research Center, Alzahra Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran.,Universal Council of Epidemiology (UCE), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Marjan Mansourian
- Department of Epidemiology and Biostatistics, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Fahimeh Hosseininasab
- Department of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Saba Ramezani
- Student Research Committee, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mahdi Barzegar
- Student Research Committee, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Mehdi Amin
- Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Parinaz Poursafa
- Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Nafiseh Esmaeil
- Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran.,Department of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Roya Kelishadi
- Child Growth and Development Research Center, Research Institute for Primordial Prevention of Non-communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
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Silvestre RT, Bravo M, Santiago F, Delmonico L, Scherrer L, Otero UB, Liehr T, Alves G, Chantre-Justino M, Ornellas MH. Hypermethylation in Gene Promoters Are Induced by Chronic Exposure to Benzene, Toluene, Ethylbenzene and Xylenes. Pak J Biol Sci 2020; 23:518-525. [PMID: 32363837 DOI: 10.3923/pjbs.2020.518.525] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
BACKGROUND AND OBJECTIVE Gas station attendants are occupationally exposed to benzene, toluene, ethylbenzene and xylene (BTEX) compounds and thus more susceptible to the biological effects of this mixture present in gasoline, especially due to the carcinogenicity of benzene. Furthermore, the harmful effects of BTEX exposure may be potentiated by genetic and epigenetic inactivation of critical genes. The objective was to evaluate such gene-BTEX interactions accessing the promoter methylation status of p14ARF, p16INK4A and GSTP1 in peripheral blood leukocyte samples. MATERIALS AND METHODS The 59 exposed and 68 unexposed participants from Rio de Janeiro, Brazil, were included. The promoter methylation status was accessed by methylation-specific PCR (MSP) and GSTP1 Ile105Val polymorphism was investigated by PCR-restriction fragment length polymorphism (PCR-RFLP) technique. RESULTS Both p14ARF and p16INK4A were significantly hypermethylated in exposed subjects compared to unexposed (p = 0.004 and p<0.001, respectively). Additionally, p16INK4A hypermethylation in the exposed group was correlated with chromosomal abnormalities (CAs) (p = 0.018), thus highlighting the influence of the gene-environment interactions on genome instability. Noteworthy, p16INK4A methylation was significantly associated with miscarriage among female attendants (p = 0.047), in which those who reported miscarriage exhibited hypermethylation in at least 2 of the 3 genes analyzed. The GSTP1 heterozygote genotype, which could affect the metabolism of benzene detoxification, was found in both groups but was more frequent in those occupationally exposed. No significant association was observed between GSTP1 genotypes and methylation status. CONCLUSION Together, these findings indicate that gas station attendants with the aforementioned epigenetic and genetic profiles may be at greater risk of occupational BTEX exposure-induced genome instability, which could require concerted efforts to establish more preventive actions and constant biomonitoring in gas station attendants.
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Barbosa E, Dos Santos ALA, Peteffi GP, Schneider A, Müller D, Rovaris D, Bau CHD, Linden R, Antunes MV, Charão MF. Increase of global DNA methylation patterns in beauty salon workers exposed to low levels of formaldehyde. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:1304-1314. [PMID: 30421373 DOI: 10.1007/s11356-018-3674-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 11/05/2018] [Indexed: 06/09/2023]
Abstract
Formaldehyde (FA) is a carcinogenic aldehyde illegally added to creams as a hair straightening agent for the Brazilian blowout (BB). This study aimed to investigate the possible effects of occupational exposure to FA on global DNA methylation in salon workers with different exposure levels. FA exposure was monitored using environmental and biological measurements. The study included 49 salon workers divided by FA levels in the workplace into group A (FA < 0.01 ppm; n = 8), group B (0.03 ppm < FA < 0.06 ppm; n = 15), and group C (0.08 ppm < FA < 0.24 ppm; n = 26). The global DNA methylation levels were 3.12%, 4.55%, and 4.29% for groups A, B, and C, respectively, with statistically higher values for groups B and C compared to group A (p = 0.002). A correlation was found between FA in passive samplers and global DNA methylation (rs = 0.307, p = 0.032). Additionally, when only taking into account the hairdressers that performed the BB on clients instead of the whole group, a stronger correlation was observed between FA in personal passive samplers and global DNA methylation (rs = 0.764, p = 0.006). For the first time, an increase in DNA methylation was observed in subjects occupationally exposed to FA. In conclusion, our results indicated that even low levels of FA exposure could cause a disturbance in DNA methylation, leading to epigenetic changes, which is associated with cancer development. These data suggest a possible contribution of FA to cancer development through occupational exposure.
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Affiliation(s)
- Eduardo Barbosa
- Analytical Toxicology Laboratory, Universidade Feevale, ERS-239, 2755, Novo Hamburgo, RS, 93525-075, Brazil
- Graduate Program on Toxicology and Analytical Toxicology, Universidade Feevale, Novo Hamburgo, RS, Brazil
| | | | - Giovana Piva Peteffi
- Analytical Toxicology Laboratory, Universidade Feevale, ERS-239, 2755, Novo Hamburgo, RS, 93525-075, Brazil
| | - Anelise Schneider
- Analytical Toxicology Laboratory, Universidade Feevale, ERS-239, 2755, Novo Hamburgo, RS, 93525-075, Brazil
| | - Diana Müller
- Department of Genetics, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- ADHD Outpatient Program, Adult Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Diego Rovaris
- Department of Genetics, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- ADHD Outpatient Program, Adult Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Claiton Henrique Dotto Bau
- Department of Genetics, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- ADHD Outpatient Program, Adult Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Rafael Linden
- Analytical Toxicology Laboratory, Universidade Feevale, ERS-239, 2755, Novo Hamburgo, RS, 93525-075, Brazil
- Graduate Program on Toxicology and Analytical Toxicology, Universidade Feevale, Novo Hamburgo, RS, Brazil
| | - Marina Venzon Antunes
- Analytical Toxicology Laboratory, Universidade Feevale, ERS-239, 2755, Novo Hamburgo, RS, 93525-075, Brazil
- Graduate Program on Toxicology and Analytical Toxicology, Universidade Feevale, Novo Hamburgo, RS, Brazil
| | - Mariele Feiffer Charão
- Analytical Toxicology Laboratory, Universidade Feevale, ERS-239, 2755, Novo Hamburgo, RS, 93525-075, Brazil.
- Graduate Program on Toxicology and Analytical Toxicology, Universidade Feevale, Novo Hamburgo, RS, Brazil.
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25
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Epigenetic Alterations: The Relation Between Occupational Exposure and Biological Effects in Humans. RNA TECHNOLOGIES 2019. [DOI: 10.1007/978-3-030-14792-1_11] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Tian FY, Marsit CJ. Environmentally Induced Epigenetic Plasticity in Development: Epigenetic Toxicity and Epigenetic Adaptation. CURR EPIDEMIOL REP 2018; 5:450-460. [PMID: 30984515 PMCID: PMC6456900 DOI: 10.1007/s40471-018-0175-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
PURPOSE OF REVIEW Epigenetic processes represent important mechanisms underlying developmental plasticity in response to environmental exposures. The current review discusses three classes of environmentally-induced epigenetic changes reflecting two aspects of that plasticity, toxicity effects as well as adaptation in the process of development. RECENT FINDINGS Due to innate resilience, epigenetic changes caused by environmental exposures may not always lead impairments but may allow the organisms to achieve positive developmental outcomes through appropriate adaptation and a buffering response. Thus, some epigenetic adaptive responses to an immediate stimulus or exposure early in life would be expected to have a survival advantage but these same responses may also result in adverse developmental outcomes as they persists into later life stage. Although accumulating literature has identified environmentally induced epigenetic changes and linked them to health outcomes, we currently face challenges in the interpretation of the functional impact of their epigenetic plasticity. SUMMARY Current environmental epigenetic research suggest that epigenetic processes may serve as a mechanism for resilience, and that they can be considered in terms of their impact on toxicity as a negative outcome, but also on adaptation for improved survival or health. This review encourages epigenetic environmental studies to move deeper inside into the functional meaning of epigenetic plasticity in the development.
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Affiliation(s)
- Fu-Ying Tian
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA
| | - Carmen J. Marsit
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA
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