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Larsen K, Rydz E, Peters CE. Inequalities in Environmental Cancer Risk and Carcinogen Exposures: A Scoping Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:ijerph20095718. [PMID: 37174236 PMCID: PMC10178444 DOI: 10.3390/ijerph20095718] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/11/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023]
Abstract
Background: Cancer is the leading cause of death in Canada and a major cause of death worldwide. Environmental exposure to carcinogens and environments that may relate to health behaviors are important to examine as they can be modified to lower cancer risks. Built environments include aspects such as transit infrastructure, greenspace, food and tobacco environments, or land use, which may impact how people move, exercise, eat, and live. While environments may play a role in overall cancer risk, exposure to carcinogens or healthier environments is not equitably spread across space. Exposures to carcinogens commonly concentrate among socially and/or economically disadvantaged populations. While many studies have examined inequalities in exposure or cancer risk, this has commonly been for one exposure. Methods: This scoping review collected and synthesized research that examines inequities in carcinogenic environments and exposures. Results: This scoping review found that neighborhoods with higher proportions of low-income residents, racialized people, or same-sex couples had higher exposures to carcinogens and environments that may influence cancer risk. There are currently four main themes in research studying inequitable exposures: air pollution and hazardous substances, tobacco access, food access, and other aspects of the built environment, with most research still focusing on air pollution. Conclusions: More work is needed to understand how exposures to these four areas intersect with other factors to reduce inequities in exposures to support longer-term goals toward cancer prevention.
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Affiliation(s)
- Kristian Larsen
- Health Canada, Office of Environmental Health, Healthy Environments and Consumer Safety Branch, Environmental and Radiation Health Science Directorate, Ottawa, ON K1A 0K9, Canada
- CAREX Canada, School of Population and Public Health, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
- Department of Geography and Planning, University of Toronto, Toronto, ON M5S 3G3, Canada
- Department of Geography and Environmental Studies, Toronto Metropolitan University, Toronto, ON M5B 2K3, Canada
| | - Ela Rydz
- CAREX Canada, School of Population and Public Health, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
- Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Cheryl E Peters
- CAREX Canada, School of Population and Public Health, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
- Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada
- Prevention, Screening and Hereditary Cancer, BC Cancer, Vancouver, BC V5Z 4E6, Canada
- Population and Public Health, British Columbia Centre for Disease Control, Vancouver, BC V5Z 4R4, Canada
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Dutra VGP, da Silva JHCM, Jomar RT, Silveira HCS, Muzi CD, Guimarães RM. Burden of occupational cancer in Brazil and federative units, 1990-2019. REVISTA BRASILEIRA DE EPIDEMIOLOGIA 2023; 26:e230001. [PMID: 36629613 PMCID: PMC9838239 DOI: 10.1590/1980-549720230001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 10/03/2022] [Indexed: 01/11/2023] Open
Abstract
OBJECTIVE To analyze the spatiotemporal distribution of the burden of occupational cancer in Brazil and federative units between 1990 and 2019. METHODS Data were extracted from the Global Burden of Disease (GBD) study. Deaths from cancer whose attributable risk factor was occupational carcinogens were considered. Spatial analysis was performed with the first and last years of the series (1990 and 2019). Age-adjusted mortality rates were used to estimate the global Moran's Index (Moran's I), and the local indicator of spatial association (LISA) to identify clusters in the country with the respective statistical significance. The occupational cancer mortality rate, adjusted for age, was analyzed based on its trend for Brazil and federative units, in the period between 1990 and 2019. RESULTS Between 1990 and 2019, occupational cancer mortality rate showed a decreasing trend (R2=0.62; p<0.001) as well as the burden of disease indicator - DALY (R2=0.84; p<0.001). However, mortality is increasing in most states, suggesting that a minority of federative units induce the country's global trend. There is also the development of a spatial pattern of autocorrelation, indicating clusters of states with low mortality and DALY rates in the Northeast and high values in the South of the country. CONCLUSION The overall decreasing trend in the trend of occupational cancer masks the heterogeneity across states. This scenario may be associated with the diversity of economic activities, and suggests a decentralized and equitable plan for occupational cancer surveillance.
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Affiliation(s)
| | | | - Rafael Tavares Jomar
- Instituto Nacional de Câncer, Hospital Cancer Registry – Rio de Janeiro (RJ), Brazil
| | | | - Camila Drumond Muzi
- Instituto Nacional de Câncer, Assistance Division — Rio de Janeiro (RJ), Brazil
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Dutra VGP, Silva JHCMD, Jomar RT, Silveira HCS, Muzi CD, Guimarães RM. Carga de câncer relacionado ao trabalho no Brasil e unidades da federação, 1990–2019. REVISTA BRASILEIRA DE EPIDEMIOLOGIA 2023. [DOI: 10.1590/1980-549720230001.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
RESUMO: Objetivo: Analisar a carga de câncer relacionado ao trabalho no Brasil e unidades da federação, entre 1990 e 2019. Métodos: Extraímos os dados do estudo Carga Global de Doenças (GBD). Consideramos as mortes por câncer cujo fator de risco atribuível fossem agentes ocupacionais carcinogênicos. A análise espacial foi realizada com o primeiro e último anos da série (1990 e 2019). As taxas de mortalidade ajustadas por idade foram utilizadas para calcular o índice de Moran global (I de Moran) e o indicador local de associação espacial (LISA). A taxa de mortalidade por câncer relacionado ao trabalho, ajustada por idade, foi analisada com base em sua tendência, para Brasil e unidades da federação, no período entre 1990 e 2019. Resultados: No período citado, a taxa de mortalidade por câncer relacionado ao trabalho exibiu tendência de decréscimo (R2=0,62; p<0,001), assim como o indicador de carga de doença — DALY (R2=0,84; p<0,001). Contudo, a mortalidade é crescente na maioria dos estados, o que sugere que uma minoria de unidades induz a tendência global do país. Há ainda formação de um padrão espacial de autocorrelação, indicando agrupamentos de estados com baixas taxas de mortalidade e DALY no Nordeste e valores altos no Sul do país. Conclusão: A tendência global de decréscimo na tendência do câncer relacionado ao trabalho mascara a heterogeneidade entre estados. Esse cenário pode estar associado à diversidade de atividades econômicas e sugere um plano descentralizado e equitativo da vigilância do câncer relacionado ao trabalho.
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Ban J, Su W, Zhong Y, Liu C, Li T. Ambient formaldehyde and mortality: A time series analysis in China. SCIENCE ADVANCES 2022; 8:eabm4097. [PMID: 35776800 PMCID: PMC10883368 DOI: 10.1126/sciadv.abm4097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The potential health impact of low-level ambient formaldehyde has been historically overlooked. We conducted a two-stage time series analysis to investigate associations between ambient formaldehyde and daily nonaccidental, circulatory, and respiratory mortality and six subtypes based on 5,325,585 deaths in 275 Chinese counties between 2013 and 2018 and estimated a concentration-response curve to identify overall associations. After controlling for confounders from meteorological factors, air pollutants, time trend, and day of the week effect, with a 1-part per billion (ppb) increase in the daily concentration of formaldehyde on lag0 day, we found that mortality risks in nonaccidental, circulatory, and respiratory diseases increased by 0.36%, 0.36% and 0.41%, respectively. The curve indicated a possible threshold concentration at approximately 5 ppb for significant impact on nonaccidental and circulatory diseases. We suggest that ambient formaldehyde may represent a potential threat to public health and needs further investigation to support timely pollution regulation and health protection.
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Affiliation(s)
- Jie Ban
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Wenjing Su
- Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Yu Zhong
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Cheng Liu
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China
- Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Tiantian Li
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
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Naddafi K, Mesdaghinia A, Abtahi M, Hassanvand MS, Beiki A, Shaghaghi G, Shamsipour M, Mohammadi F, Saeedi R. Assessment of burden of disease induced by exposure to heavy metals through drinking water at national and subnational levels in Iran, 2019. ENVIRONMENTAL RESEARCH 2022; 204:112057. [PMID: 34529973 DOI: 10.1016/j.envres.2021.112057] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 09/09/2021] [Accepted: 09/10/2021] [Indexed: 06/13/2023]
Abstract
The burden of disease attributable to exposure to heavy metals via drinking water in Iran (2019) was assessed at the national and regional levels. The non-carcinogenic risk, carcinogenic risk, and attributable burden of disease of heavy metals in drinking water were estimated in terms of hazard quotient (HQ), incremental lifetime cancer risk (ILCR), and disability-adjusted life year (DALY), respectively. The average drinking water concentrations of arsenic (As), cadmium (Cd), chromium (Cr), lead (Pb), mercury (Hg), and nickel (Ni) in Iran were determined to be 2.3, 0.4, 12.1, 2.5, 0.7, and 19.7 μg/L, respectively, which were much lower than the standard values. The total average HQs of heavy metals in drinking water in the entire country, rural, and urban communities were 0.48, 0.65 and 0.45, respectively. At the national level, the average ILCRs of heavy metal in the entire country were in the following order: 1.06 × 10-4 for As, 5.89 × 10-5 for Cd, 2.05 × 10-5 for Cr, and 3.76 × 10-7 for Pb. The cancer cases, deaths, death rate (per 100,000 people), DALYs, and DALY rate (per 100,000 people) attributed to exposure to heavy metals in drinking water at the national level were estimated to be 213 (95% uncertainty interval: 180 to 254), 87 (73-104), 0.11 (0.09-0.13), 4642 (3793-5489), and 5.81 (4.75-6.87), respectively. The contributions of exposure to As, Cd, Cr, and Pb in the attributable burden of disease were 14.7%, 65.7%, 19.3%, and 0.2%, respectively. The regional distribution of the total attributable DALY rate for all heavy metals was as follows: Region 5> Region 4> Region 1> Region 3> Region 2. The investigation and improvement of relatively high exceedance of As levels in drinking water from the standard value, especially in Regions 5 and 3 as well as biomonitoring of heavy metals throughout the country were recommended.
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Affiliation(s)
- Kazem Naddafi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; Center for Air Pollution Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Mesdaghinia
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehrnoosh Abtahi
- Workplace Health Promotion Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Environmental Health Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Sadegh Hassanvand
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; Center for Air Pollution Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Ayoub Beiki
- Center of Environmental and Occupational Health, Ministry of Health and Medical Education, Tehran, Iran
| | - Gholamreza Shaghaghi
- Center of Environmental and Occupational Health, Ministry of Health and Medical Education, Tehran, Iran
| | - Mansour Shamsipour
- Department of Research Methodology and Data Analysis, Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Mohammadi
- Department of Health and Safety, and Environment (HSE), School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Saeedi
- Workplace Health Promotion Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Health and Safety, and Environment (HSE), School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Rasmussen PE, Levesque C, Butler O, Chénier M, Gardner HD. Selection of metric for indoor-outdoor source apportionment of metals in PM 2.5 : mg/kg versus ng/m 3. INDOOR AIR 2022; 32:e12924. [PMID: 34418165 PMCID: PMC9292266 DOI: 10.1111/ina.12924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 06/13/2023]
Abstract
Trends in the elemental composition of fine particulate matter (PM2.5 ) collected from indoor, outdoor, and personal microenvironments were investigated using two metrics: ng/m3 and mg/kg. Pearson correlations that were positive using one metric commonly disappeared or flipped to become negative when the other metric was applied to the same dataset. For example, the correlation between Mo and S in the outdoor microenvironment was positive using ng/m3 (p < 0.05) but negative using mg/kg (p < 0.05). In general, elemental concentrations (mg/kg) within PM2.5 decreased significantly (p < 0.05) as PM2.5 concentrations (µg/m3 ) increased-a dilution effect that was observed in all microenvironments and seasons. An exception was S: in the outdoor microenvironment, the correlation between wt% S and PM2.5 flipped from negative in the winter (p < 0.01) to positive (p < 0.01) in the summer, whereas in the indoor microenvironment, this correlation was negative year-round (p < 0.05). Correlation analyses using mg/kg indicated that elemental associations may arise from Fe-Mn oxyhydroxide sorption processes that occur as particles age, with or without the presence of a common anthropogenic source. Application of mass-normalized concentration metrics (mg/kg or wt%), enabled by careful gravimetric analysis, revealed new evidence of the importance of indoor sources of elements in PM2.5 .
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Affiliation(s)
- Pat E. Rasmussen
- Environmental Health Science and Research BureauHealthy Environments and Consumer Safety BranchHealth CanadaOttawaONCanada
- Department of Earth and Environmental SciencesUniversity of OttawaOttawaONCanada
| | - Christine Levesque
- Environmental Health Science and Research BureauHealthy Environments and Consumer Safety BranchHealth CanadaOttawaONCanada
| | | | - Marc Chénier
- Environmental Health Science and Research BureauHealthy Environments and Consumer Safety BranchHealth CanadaOttawaONCanada
| | - H. David Gardner
- Environmental Health Science and Research BureauHealthy Environments and Consumer Safety BranchHealth CanadaOttawaONCanada
- Department of Earth and Environmental SciencesUniversity of OttawaOttawaONCanada
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Abtahi M, Dobaradaran S, Koolivand A, Jorfi S, Saeedi R. Burden of disease induced by public overexposure to solar ultraviolet radiation (SUVR) at the national and subnational levels in Iran, 2005-2019. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 292:118411. [PMID: 34718085 DOI: 10.1016/j.envpol.2021.118411] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 10/23/2021] [Accepted: 10/26/2021] [Indexed: 06/13/2023]
Abstract
Estimating the burden of diseases induced by overexposure to solar ultraviolet radiation (SUVR) can help to prioritize environmental health interventions. The age-sex specific and cause-specific mortality and disability-adjusted life years (DALYs) attributable to overexposure to SUVR at the national and subnational levels in Iran, 2005-2019 were estimated. The burden of disease induced by overexposure to SUVR was quantified in four steps as follows: (1) estimating exposure to SUVR, (2) estimating total incidences and deaths of target causes, (3) assessing population attributable fractions of the target causes for the SUVR, and (4) calculating the attributable burden of disease. The attributable DALYs, deaths, age-standardized DALY rate, and age-standardized death rate at the national level were determined to be respectively 21896, 252, 42.59, and 0.56 in 2005 and were respectively changed to 28665, 377, 38.76, and 0.53 in 2019. The contributions of causes in the attributable DALYs at the national level were different by year and sex and for both sexes in 2019 were as follows: 46.15% for cataract, 20.36% for malignant skin melanoma, 16.07% for sunburn, 12.41% for squamous-cell carcinoma, and 5.01% for the other five causes. The contributions of population growth, population ageing, risk exposure, and risk-deleted DALY rate in the temporal variations of the attributable burden of disease in the country were +20.73%, +20.68%, +2.01%, and -12.51%. The highest and lowest provincial attributable age-standardized DALY rates in 2019 were observed in Fars (46.8) and Ardebil (32.7), respectively. The burden of disease induced by exposure to SUVR caused relatively low geographical inequality in health status in Iran. Due to increasing trends of the SUVR as well as the attributable burden of disease, the preventive interventions against the SUVR overexposure should be considered in the public health action plan all across the country.
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Affiliation(s)
- Mehrnoosh Abtahi
- Workplace Health Promotion Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Environmental Health Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sina Dobaradaran
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran; Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Ali Koolivand
- Department of Environmental Health Engineering, Faculty of Health, Arak University of Medical Sciences, Arak, Iran
| | - Sahand Jorfi
- Environmental Technology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Reza Saeedi
- Workplace Health Promotion Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Health and Safety, and Environment (HSE), School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Rehman MU, Khan R, Khan A, Qamar W, Arafah A, Ahmad A, Ahmad A, Akhter R, Rinklebe J, Ahmad P. Fate of arsenic in living systems: Implications for sustainable and safe food chains. JOURNAL OF HAZARDOUS MATERIALS 2021; 417:126050. [PMID: 34229383 DOI: 10.1016/j.jhazmat.2021.126050] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 04/27/2021] [Accepted: 04/29/2021] [Indexed: 06/13/2023]
Abstract
Arsenic, a group 1 carcinogen for humans, is abundant as compared to other trace elements in the environment and is present mainly in the Earth's crust and soil. The arsenic distributions in different geographical regions are dependent on their geological histories. Anthropogenic activities also contribute significantly to arsenic release into the environment. Arsenic presents several complications to humans, animals, and plants. The physiology of plants and their growth and development are affected by arsenic. Arsenic is known to cause cancer and several types of organ toxicity, such as cardiotoxicity, nephrotoxicity, and hepatotoxicity. In the environment, arsenic exists in variable forms both as inorganic and organic species. From arsenic containing compartments, plants can absorb and accumulate arsenic. Crops grown on these contaminated soils pose several-fold higher toxicity to humans compared with drinking water if arsenic enters the food chain. Information regarding arsenic transfer at different trophic levels in food chains has not been summarized until now. The present review focuses on the food chain perspective of arsenic, which affects all components of the food chain during its course. The circumstances that facilitate arsenic accumulation in flora and fauna, as components of the food chain, are outlined in this review.
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Affiliation(s)
- Muneeb U Rehman
- Department of Clinical Pharmacy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Rehan Khan
- Department of Nano-Therapeutics, Institute of Nano Science & Technology, Habitat Centre, Phase 10, Sector 64, Mohali, Punjab 160062, India
| | - Andleeb Khan
- Department of Pharmacology and Toxicology, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia
| | - Wajhul Qamar
- Department of Pharmacology and Toxicology and Central Lab, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Azher Arafah
- Department of Clinical Pharmacy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Anas Ahmad
- Department of Nano-Therapeutics, Institute of Nano Science & Technology, Habitat Centre, Phase 10, Sector 64, Mohali, Punjab 160062, India
| | - Ajaz Ahmad
- Department of Clinical Pharmacy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Rukhsana Akhter
- Department of Clinical Biochemistry, Govt. Degree College (Baramulla), Khawaja Bagh, Baramulla, Jammu and Kashmir, India
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water, and Waste-Management, Laboratory of Soil, and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany; Department of Environment, Energy and Geoinformatics, Sejong University, Seoul 05006, South Korea
| | - Parvaiz Ahmad
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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Reddam A, Volz DC. Inhalation of two Prop 65-listed chemicals within vehicles may be associated with increased cancer risk. ENVIRONMENT INTERNATIONAL 2021; 149:106402. [PMID: 33524670 PMCID: PMC7897270 DOI: 10.1016/j.envint.2021.106402] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 01/13/2021] [Accepted: 01/14/2021] [Indexed: 05/17/2023]
Abstract
Chemicals are listed on California's Proposition 65 (Prop 65) for their potential to cause cancer, birth defects or other reproductive harm, and certain chemicals from this list are often detected within interior vehicle dust and air. Therefore, this study examined the potential risk associated with five Prop 65-listed chemicals detected within vehicle interiors: benzene, formaldehyde, di (2-ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP), and tris(1,3-dichloro-2-propyl)phosphate (TDCIPP). Exposure estimates based on time spent within a vehicle were derived from a meta-analysis of estimated concentrations from the literature. Regulatory levels established by the California Office of Environmental Health Hazard Assessment (OEHHA) were then used to generate percent reference doses (%RfDs) for chemical-specific daily doses as well as determine the probability of risk (exceedance probability) as a function of %RfD for each chemical-specific daily dose. Based on our meta-analysis, benzene and formaldehyde were detected in vehicle interior air whereas DEHP, DBP and TDCIPP were detected in vehicle interior dust. Benzene and formaldehyde were the only two chemicals with an estimated %RfD > 100 across any of the commute times. For commute times of 20 min or longer, the %RfD was > 100 for maximum exposures based on the "maximum allowable daily level" for benzene, and for 95th-percentile exposures based on the "no significant risk level" for benzene and formaldehyde. Furthermore, the probability of exceeding 100% RfD was highest for cancer risks associated with benzene, followed by cancer risks associated with formaldehyde and the risk of reproductive and developmental toxicity associated with benzene. Lastly, within the entire state of California, the percent of commuters with a 10% probability of exceeding cancer risk associated with benzene or formaldehyde exposure was 78% and 63%, respectively. Overall, our study raises concerns about the potential risk associated with inhalation of benzene and formaldehyde for people who spend a significant amount of time in their vehicles, an issue that is especially pertinent to traffic-congested areas where people have longer commutes.
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Affiliation(s)
- Aalekhya Reddam
- Environmental Toxicology Graduate Program, University of California, Riverside, CA, USA; Department of Environmental Sciences, University of California, Riverside, CA, USA
| | - David C Volz
- Department of Environmental Sciences, University of California, Riverside, CA, USA.
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Guimarães RM, Muzi CD, Meira KC, Dos Santos RD, Saraiva MM, Rohlfs DB. Occupational exposure to carcinogens in Brazil: An approach. ARCHIVES OF ENVIRONMENTAL & OCCUPATIONAL HEALTH 2021; 76:414-423. [PMID: 33750273 DOI: 10.1080/19338244.2021.1900044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 01/22/2021] [Accepted: 03/02/2021] [Indexed: 06/12/2023]
Abstract
This study aims to estimate the prevalence of the primary occupational exposures, considered risk factors for Cancer in Brazil. We elaborated two exposure scenarios considering the agents' classification and the intensity of exposure, stratified by Brazilian regions and sex. Two pairs of specialists performed the classification of economic activities and occupations due to exposure. There was an excellent overall agreement (94%) and acceptable overall reliability (kappa 0.92, 95% CI 0.89-0.95). There is a notable difference (595%) in occupational exposure between the north (with a higher concentration of rural areas and extractivism) and southeast (with a higher level of industrial activities). There is a difference in prevalence from 833% for solvents to 1170% for inorganic dust between the two scenarios. There is a heterogeneity of exposures according to location, sex, circumstance, and sensitiveness of classification.
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Affiliation(s)
| | - Camila Drumond Muzi
- Brazilian National Institute of Cancer, Ministry of Health, Rio de Janeiro, Brazil
| | | | | | - Magda Machado Saraiva
- Environmental and Occupational Health Department, Ministry of Health, Brasilia, Brazil
| | - Daniela Buosi Rohlfs
- Environmental and Occupational Health Department, Ministry of Health, Brasilia, Brazil
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Air Pollution and Atopic Dermatitis (AD): The Impact of Particulate Matter (PM 10) on an AD Mouse-Model. Int J Mol Sci 2020; 21:ijms21176079. [PMID: 32846909 PMCID: PMC7503766 DOI: 10.3390/ijms21176079] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/17/2020] [Accepted: 08/20/2020] [Indexed: 02/07/2023] Open
Abstract
Air pollution reportedly contributes to the development and exacerbation of atopic dermatitis (AD). However, the exact mechanism underlying this remains unclear. To examine the relationship between air pollution and AD, a clinical, histological, and genetic analysis was performed on particulate matter (PM)-exposed mice. Five-week-old BALB/c mice were randomly divided into four groups (control group, ovalbumin (OVA) group, PM group, OVA + PM group; n = 6) and treated with OVA or PM10, alone or together. Cutaneous exposure to OVA and PM10 alone resulted in a significant increase in skin severity scores, trans-epidermal water loss (TEWL) and epidermal thickness compared to the control group at Week 6. The findings were further accentuated in the OVA + PM group showing statistical significance over the OVA group. A total of 635, 501, and 2149 genes were found to be differentially expressed following OVA, PM10, and OVA + PM10 exposure, respectively. Strongly upregulated genes included RNASE2A, S100A9, SPRR2D, THRSP, SPRR2A1 (OVA vs. control), SPRR2D, S100A9, STFA3, CHIL1, DBP, IL1B (PM vs. control) and S100A9, SPRR2D, SPRR2B, S100A8, SPRR2A3 (OVA + PM vs. control). In comparing the groups OVA + PM with OVA, 818 genes were differentially expressed with S100A9, SPRR2B, SAA3, S100A8, SPRR2D being the most highly upregulated in the OVA + PM group. Taken together, our study demonstrates that PM10 exposure induces/aggravates skin inflammation via the differential expression of genes controlling skin barrier integrity and immune response. We provide evidence on the importance of public awareness in PM-associated skin inflammation. Vigilant attention should be paid to all individuals, especially to those with AD.
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