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FAZAL A, ISMAIL A, NAEEM I, OLIVEIRA CAF, SHAUKAT S, SALEEM MU, SAIMA S, NASIR U, ALAM A, ASLAM Z, ASLAM R. Exposure assessment of selected pesticide residues using occurrence data in foods and serum samples in Pakistan. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.01222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
| | | | | | | | - Sohail SHAUKAT
- Pakistan Council of Scientific and Industrial Research Laboratories Complex, Pakistan
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Burgos-Aceves MA, Migliaccio V, Di Gregorio I, Paolella G, Lepretti M, Faggio C, Lionetti L. 1,1,1-trichloro-2,2-bis (p-chlorophenyl)-ethane (DDT) and 1,1-Dichloro-2,2-bis (p, p'-chlorophenyl) ethylene (DDE) as endocrine disruptors in human and wildlife: A possible implication of mitochondria. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2021; 87:103684. [PMID: 34052433 DOI: 10.1016/j.etap.2021.103684] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 04/14/2021] [Accepted: 05/25/2021] [Indexed: 06/12/2023]
Abstract
1,1,1-trichloro-2,2-bis (p-chlorophenyl)-ethane (DDT) and its main metabolite 1,1-Dichloro-2,2-bis (p, p'-chlorophenyl) ethylene (DDE) act as endocrine disruptors in humans and wildlife. Immunomodulatory functions have also been attributed to both xenobiotics. DDT was banned in the 1970s due to its toxicity, but it is still produced and used for indoor residual spraying with disease vector control purposes. Due to their persistence and lipophilic properties, DDT and DDE can bioaccumulate through the food chain, being stored in organisms' adipose depots. Their endocrine disruptor function is mediated by agonist or antagonist interaction with nuclear receptors. Present review aimed to provide an overview of how DDT and DDE exposure impacts reproductive and immune systems with estrogen-disrupting action in humans and wildlife. Studies showing DDT and DDE impact on mitochondrial function and apoptosis pathway will also be reviewed, suggesting the hypothesis of direct action on mitochondrial steroid receptors.
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Affiliation(s)
- Mario Alberto Burgos-Aceves
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy
| | - Vincenzo Migliaccio
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy
| | - Ilaria Di Gregorio
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy
| | - Gaetana Paolella
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy
| | - Marilena Lepretti
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, University of Messina, Viale F. Stagno d'Alcontres, 31, 98166 Messina, Italy
| | - Lillà Lionetti
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy.
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Guth S, Hüser S, Roth A, Degen G, Diel P, Edlund K, Eisenbrand G, Engel KH, Epe B, Grune T, Heinz V, Henle T, Humpf HU, Jäger H, Joost HG, Kulling SE, Lampen A, Mally A, Marchan R, Marko D, Mühle E, Nitsche MA, Röhrdanz E, Stadler R, van Thriel C, Vieths S, Vogel RF, Wascher E, Watzl C, Nöthlings U, Hengstler JG. Contribution to the ongoing discussion on fluoride toxicity. Arch Toxicol 2021; 95:2571-2587. [PMID: 34095968 PMCID: PMC8241794 DOI: 10.1007/s00204-021-03072-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 05/04/2021] [Indexed: 01/17/2023]
Abstract
Since the addition of fluoride to drinking water in the 1940s, there have been frequent and sometimes heated discussions regarding its benefits and risks. In a recently published review, we addressed the question if current exposure levels in Europe represent a risk to human health. This review was discussed in an editorial asking why we did not calculate benchmark doses (BMD) of fluoride neurotoxicity for humans. Here, we address the question, why it is problematic to calculate BMDs based on the currently available data. Briefly, the conclusions of the available studies are not homogeneous, reporting negative as well as positive results; moreover, the positive studies lack control of confounding factors such as the influence of well-known neurotoxicants. We also discuss the limitations of several further epidemiological studies that did not meet the inclusion criteria of our review. Finally, it is important to not only focus on epidemiological studies. Rather, risk analysis should consider all available data, including epidemiological, animal, as well as in vitro studies. Despite remaining uncertainties, the totality of evidence does not support the notion that fluoride should be considered a human developmental neurotoxicant at current exposure levels in European countries.
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Affiliation(s)
- Sabine Guth
- Department of Toxicology, Leibniz Research Centre for Working Environment and Human Factors (IfADo), Dortmund, Germany
| | - Stephanie Hüser
- Department of Toxicology, Leibniz Research Centre for Working Environment and Human Factors (IfADo), Dortmund, Germany
| | - Angelika Roth
- Department of Toxicology, Leibniz Research Centre for Working Environment and Human Factors (IfADo), Dortmund, Germany
| | - Gisela Degen
- Department of Toxicology, Leibniz Research Centre for Working Environment and Human Factors (IfADo), Dortmund, Germany
| | - Patrick Diel
- Department of Molecular and Cellular Sports Medicine, Institute of Cardiovascular Research and Sports Medicine, German Sport University Cologne, Cologne, Germany
| | - Karolina Edlund
- Department of Toxicology, Leibniz Research Centre for Working Environment and Human Factors (IfADo), Dortmund, Germany
| | | | - Karl-Heinz Engel
- Department of General Food Technology, School of Life Sciences, TU Munich, Freising, Germany
| | - Bernd Epe
- Institute of Pharmacy and Biochemistry, University of Mainz, Mainz, Germany
| | - Tilman Grune
- Department of Molecular Toxicology, German Institute of Human Nutrition (DIfE), Nuthetal, Germany
| | - Volker Heinz
- German Institute of Food Technologies (DIL), Quakenbrück, Germany
| | - Thomas Henle
- Department of Food Chemistry, TU Dresden, Dresden, Germany
| | - Hans-Ulrich Humpf
- Institute of Food Chemistry, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Henry Jäger
- Institute of Food Technology, University of Natural Resources and Life Sciences (BOKU), Vienna, Austria
| | - Hans-Georg Joost
- Department of Experimental Diabetology, German Institute of Human Nutrition (DIfE), Nuthetal, Germany
| | - Sabine E Kulling
- Department of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Karlsruhe, Germany
| | - Alfonso Lampen
- Department of Food Safety, Bundesinstitut für Risikobewertung (BfR), Berlin, Germany
| | - Angela Mally
- Department of Toxicology, University of Würzburg, Würzburg, Germany
| | - Rosemarie Marchan
- Department of Toxicology, Leibniz Research Centre for Working Environment and Human Factors (IfADo), Dortmund, Germany
| | - Doris Marko
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Eva Mühle
- Department of Toxicology, Leibniz Research Centre for Working Environment and Human Factors (IfADo), Dortmund, Germany
| | - Michael A Nitsche
- Department of Psychology and Neurosciences, Leibniz Research Centre for Working Environment and Human Factors (IfADo), Dortmund, Germany.,Department of Neurology, University Medical Hospital Bergmannsheil, Ruhr-University, Bochum, Germany
| | - Elke Röhrdanz
- Department of Experimental Pharmacology and Toxicology, Federal Institute for Drugs and Medical Devices (BfArM), Bonn, Germany
| | - Richard Stadler
- Institute of Food Safety and Analytic Sciences, Nestlé Research Centre, Lausanne, Switzerland
| | - Christoph van Thriel
- Department of Toxicology, Leibniz Research Centre for Working Environment and Human Factors (IfADo), Dortmund, Germany
| | | | - Rudi F Vogel
- Lehrstuhl für Technische Mikrobiologie, TU Munich, Freising, Germany
| | - Edmund Wascher
- Department of Ergonomics, Leibniz Research Centre for Working Environment and Human Factors (IfADo), Dortmund, Germany
| | - Carsten Watzl
- Department of Immunology, Leibniz Research Centre for Working Environment and Human Factors (IfADo), Dortmund, Germany
| | - Ute Nöthlings
- Department of Nutrition and Food Sciences, Nutritional Epidemiology, Rheinische Friedrich-Wilhelms University Bonn, Bonn, Germany.
| | - Jan G Hengstler
- Department of Toxicology, Leibniz Research Centre for Working Environment and Human Factors (IfADo), Dortmund, Germany.
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Karimi B, Nabizadeh R, Yunesian M. Association Between Leukocyte Telomere Length and Serum Concentrations of PCBs and Organochlorine Pesticides. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2020; 79:122-130. [PMID: 32300848 DOI: 10.1007/s00244-020-00732-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 03/23/2020] [Indexed: 06/11/2023]
Abstract
Exposure to polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) through food, water, and air occurred during the life, which may change telomere length (TL) in peripheral blood leukocytes. The present study was designed to investigate the association between TL and serum levels of PCBs and OCPs in Tehran male's population. Whole blood samples were randomly taken from 300 adult males, aged between 25 and 40 years. TL was determined by real-time PCR to measure the number of the telomere (T) repeats to the number of a single-copy gene (S). We applied the multivariate linear regression model to compare the effect of each lipid adjusted serum levels of PCBs and OCPs congener on the TL, with adjustment for age, body mass index, education, smoking, and food patterns. Each doubling of the nondioxin-like PCBs, dioxin-like PCBs, and OCPs levels were associated with 1.9% [95% confidence interval (CI) - 0.70 to 5.40%], 2.5% (95% CI 0.30-8.3%), and - 2.4% (95% CI - 0.70 to - 6.2%) variation in the TL, respectively. The percent difference in the TL with exposure to nondioxin-like PCBs, dioxin-like PCBs, and OCPs for participants with older than age 37 years were 6.45% (95% CI 2.81-16.50%), 4.52% (95% CI 1.60-10.54%), and - 7.44% (95% CI - 1.55 to - 15.51%), respectively. Exposures to nondioxin-like PCBs (except for PCB 28 and 52) with high chlorine in structure and dioxin-like PCBs were related to longer TLs. Conversely, serum levels of OCPs can be associated with oxidative stress and systemic inflammation that lead to telomere shortening.
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Affiliation(s)
- Behrooz Karimi
- Department of Environmental Health Engineering, School of Health, Arak University of Medical Sciences, Arāk, Iran.
| | - Ramin Nabizadeh
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Enghelab St., Tehran, Iran
| | - Masud Yunesian
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Enghelab St., Tehran, Iran
- Department of Research Methodology and Data Analysis, Institute for Environmental Research (IER), Tehran University of Medical Sciences, Kargar St., Enghelab Sq., Tehran, Iran
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5
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Karimi B, Nabizadeh Nodehi R, Yunesian M. Serum level of PCBs and OCPs and leukocyte telomere length among adults in Tehran, Iran. CHEMOSPHERE 2020; 248:126092. [PMID: 32041072 DOI: 10.1016/j.chemosphere.2020.126092] [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: 09/07/2019] [Revised: 12/14/2019] [Accepted: 01/31/2020] [Indexed: 06/10/2023]
Abstract
Exposure to polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) may change leukocyte telomere length (TL) at the end of the DNA sequence. The purpose of this study was to investigate the association between PCBs and OCPs exposure with TL in Tehran adult males. Whole-blood samples were randomly taken from three hundred adult males in population-based cross-section study from October 2016 to November 2017. We studied the serum levels of PCBs, OCPs as well as socio-demographic characteristics of individuals. The quantitative PCR was used to investigate the number of the telomere (T) repeats to the number of a single copy gene. We measured the effect of each PCBs and OCPs congeners on TL using linear regressions adjusted for age, BMI, smoking, and dietary patterns. The median level of the six non-dioxin-likes, five dioxin-likes PCBs three OCPs and TL in the study population were 344.5, 306.0, 45.0 ng/g lipid and 5377.7 ± 573.4 base pairs, respectively. In the adjusted model, the percent difference in the TLs with exposure to Σnon-dioxin-like PCBs, Σdioxin-like PCBs, and OCPs were 1.93 (-0.70 to 5.4), 3.4 (1.8-8.3) and -2.4 (-0.80 to -6.2), respectively. In the fourth quartile compared to the first quartile, the percent difference in the TLs due to Σnon-dioxin-like PCBs, Σdioxin-like PCBs, and OCP exposure were 0.01 (-0.01 to 0.05), 10.3 (2.9-18.1) and -0.20 (-0.10 to -4.5), respectively. Exposures to ndl-PCBs and dl-PCBs (except for PCB28) were related to longer TLs, but OCPs exposure can be related to telomere shortening.
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Affiliation(s)
- Behrooz Karimi
- Department of Environmental Health Engineering, School of Health, Arak University of Medical Sciences, Arak, Iran.
| | - Ramin Nabizadeh Nodehi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Enghelab St., Tehran, Iran
| | - Masud Yunesian
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Enghelab St., Tehran, Iran; Department of Research Methodology and Data Analysis, Institute for Environmental Research (IER), Tehran University of Medical Sciences, Kargar St., Enghelab Sq., Tehran, Iran
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Naqvi A, Qadir A, Mahmood A, Baqar M, Aslam I, Jamil N, Mumtaz M, Saeed S, Zhang G. Screening of human health risk to infants associated with the polychlorinated biphenyl (PCB) levels in human milk from Punjab Province, Pakistan. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:6837-6850. [PMID: 31879876 DOI: 10.1007/s11356-019-07126-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 11/19/2019] [Indexed: 06/10/2023]
Abstract
This study assessed the polychlorinated biphenyl (PCB) levels in human milk and its associated health risk to infants from rural and urban settings of five districts of Punjab Province, Pakistan. The ∑34PCB concentrations ranged from 30.9 to 68.3 ng g-1 on lipid weight (l.w.) basis. The ∑8DL-PCB concentrations were ranged from 0.29 to 1.35 ng g-1 l.w., (mean 6.2 ± 8.7 ng g-1 l.w.), with toxicity equivalent to polychlorinated dibenzodioxins (PCDDs) ranging from 8.58 × 10-6 to 0.05 ng TEQ g-1 l.w. The spatial trend of PCB levels in human milk revealed higher bioaccumulative levels for urban mothers as compared with rural counterparts. The estimated daily intake (EDI) values of DL-PCBs to infants through trans-mammary transfer were considerably higher than tolerable daily intake limits established by WHO (i.e., 1-4 pg TEQ kg-1 bw) and other globally recognized organizations. Similarly, the hazard quotient values for TEQ ∑8DL-PCBs (range 1.21 to 79.87) were far above the benchmark value of 1 at all the sampling sites, indicating the high levels of adverse health risks to infants in the region through breast milk consumption. The ∑34PCB levels were found to be negatively correlated with mother' age (r = -0.31; p = 0.02), parity (r = - 0.85; p = 0.001), and infant' birth weight (r = - 0.73; p = 0.01). The present study suggests undertaking comprehensive public health risk assessment studies and firm regulatory measures to safeguard human health risks.
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Affiliation(s)
- Anber Naqvi
- College of Earth and Environmental Sciences, University of the Punjab, Lahore, 54590, Pakistan
| | - Abdul Qadir
- College of Earth and Environmental Sciences, University of the Punjab, Lahore, 54590, Pakistan.
| | - Adeel Mahmood
- Department of Environmental Science, Government College for Women University, Sialkot, 51310, Pakistan
| | - Mujtaba Baqar
- Sustainable Development Study Centre, Government College University, Lahore, 54000, Pakistan.
| | - Iqra Aslam
- College of Earth and Environmental Sciences, University of the Punjab, Lahore, 54590, Pakistan
| | - Nadia Jamil
- College of Earth and Environmental Sciences, University of the Punjab, Lahore, 54590, Pakistan
| | - Mehvish Mumtaz
- State Key Joint Laboratory of Environment Simulation and Pollution Control (SKJLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control (BKLEOC), School of Environment, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Salman Saeed
- Food and Biotechnology Research Center, Pakistan Council of Scientific and Industrial Research, Lahore, 54600, Pakistan
| | - Gan Zhang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, People's Republic of China
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de Lacerda JPA. The History of the Dioxin issue in Brazil: From citrus pulp crisis to food monitoring (REVIEW). ENVIRONMENT INTERNATIONAL 2019; 122:11-20. [PMID: 30448362 DOI: 10.1016/j.envint.2018.11.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/25/2018] [Accepted: 11/07/2018] [Indexed: 05/20/2023]
Abstract
Dioxins and furans are ubiquitous, anthropogenic environmental contaminants which can be found even in isolated places. Exposition to these chemicals poses several risks to humans such as thyroid dysfunction, cardiovascular diseases, and even cancer. In this review, the dioxin issue is analyzed in the light of the events that brought the World's attention to these pollutants, and the evolution of Brazilian scientific data on this matter since the citrus pulp crisis in 1998. Soil and air have been the main environmental matrices studied in Brazil. However, most of the research focuses on contaminated areas, with few or no data available on background levels. With the ratification of the Stockholm Convention in 2010, Brazil started to implement some measures to monitor the release of dioxins to the environment, such as the national inventory of sources. Still, the country lacks specific legislation stating acceptable limits for some industrial processes known to be source of dioxins emissions. Likewise, food monitoring has grown in recent years with the expansion of food groups monitored in the National Control Plan for Residues and Contaminants, but the available data do not allow affirming whether Brazilian residents are safe, as regard to exposure via food consumption. The implementation of a systemic survey such as a Total Diet Study would be a good strategy for a long-term monitoring not only for dioxins but also for other contaminants. Unfortunately, progressive cuts in science funds are holding back the scientific production in Brazil, whereas worldwide new emerging contaminants are being monitored and included in National Monitoring Plans both on food and environment matrices.
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Chi Y, Lin Y, Zhu H, Huang Q, Ye G, Dong S. PCBs-high-fat diet interactions as mediators of gut microbiota dysbiosis and abdominal fat accumulation in female mice. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 239:332-341. [PMID: 29674211 DOI: 10.1016/j.envpol.2018.04.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 03/21/2018] [Accepted: 04/01/2018] [Indexed: 06/08/2023]
Abstract
Polychlorinated biphenyls (PCBs), one type of lipophilic pollutant, are ubiquitous in daily life. PCBs exposure has been implicated in the alterations of gut microbial community which is profoundly associated with diverse metabolic disorders, including obesity. High-fat diet (H) is a dietary pattern characterized by a high percentage of fat. According to the theory that similarities can be easily solvable in each other, PCBs and H exposures are inevitably and objectively coexistent in a real living environment, prompting great concerns about their individual and combined effects on hosts. However, the effects of PCBs-H interactions on gut microbiota and obesity are still incompletely understood. In the present study, the effects of PCBs and/or H on the gut microbiota alteration and obesity risk in mice were examined and the interactions between PCBs and H were investigated. Obtained results showed that PCBs and/or H exposure induced prominent variations in the gut microbiota composition and diversity. Exposure to PCBs also resulted in higher body fat percentage, greater size of abdominal subcutaneous adipocytes and increased expression of proinflammatory cytokines including TNF-α, iNOS and IL-6. Such PCBs-induced changes could be further enhanced upon the co-exposure of H, implying that obese individuals may be vulnerable to PCBs exposure. Taken together, the present study is helpful for a better understanding of the gut microbiota variation influenced by PCBs and/or H exposure, and furthermore, provides a novel insight into the mechanism of PCBs-H interactions on host adiposity.
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Affiliation(s)
- Yulang Chi
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yi Lin
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
| | - Huimin Zhu
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
| | - Qiansheng Huang
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
| | - Guozhu Ye
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
| | - Sijun Dong
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China.
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Orta-García ST, Ochoa-Martínez ÁC, Varela-Silva JA, Pérez-Maldonado IN. Polybrominated diphenyl ethers (PBDEs) levels in blood samples from children living in the metropolitan area of Guadalajara, Jalisco, Mexico. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2018; 28:90-101. [PMID: 29376401 DOI: 10.1080/09603123.2018.1429578] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The aim of this study was to perform a polybrominated diphenyl ethers (PBDEs) exposure assessment using blood samples collected from children living in the metropolitan area of Guadalajara, Jalisco, Mexico (GDL). Five congeners of PBDEs were analyzed using a gas chromatography/mass spectrometry technique. The blood concentrations of total PBDEs ranged from 5.50 to 169 ng/g lipid (42.0 ± 18.0 ng/g lipid; mean ± standard deviation). Regarding BDE congeners, the main congener (highest blood levels) was BDE99 (14.5 ± 5.50 ng/g lipid), followed by BDE100 (9.80 ± 3.40 ng/g lipid) and BDE154 (9.80 ± 5.90 ng/g lipid), and finally BDE153 (5.80 ± 2.30 ng/g lipid) and BDE47 (2.20 ± 1.20 ng/g lipid). In conclusion, blood PBDEs concentrations of concern were detected in this study, as blood levels were similar to the ones found in North America (the highest worldwide).
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Affiliation(s)
- Sandra T Orta-García
- a Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT) , Universidad Autónoma de San Luis Potosí . San Luis Potosí , México
- b Facultad de Medicina , Universidad Autónoma de San Luis Potosí . San Luis Potosí , México
| | - Ángeles C Ochoa-Martínez
- a Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT) , Universidad Autónoma de San Luis Potosí . San Luis Potosí , México
- b Facultad de Medicina , Universidad Autónoma de San Luis Potosí . San Luis Potosí , México
| | - José A Varela-Silva
- a Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT) , Universidad Autónoma de San Luis Potosí . San Luis Potosí , México
- c Facultad de Enfermería , Universidad Autónoma de Zacatecas , Zacatecas , México
| | - Iván N Pérez-Maldonado
- a Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT) , Universidad Autónoma de San Luis Potosí . San Luis Potosí , México
- b Facultad de Medicina , Universidad Autónoma de San Luis Potosí . San Luis Potosí , México
- d Unidad Académica Multidisciplinaria Zona Media , Universidad Autónoma de San Luis Potosí . Rioverde San Luis Potosí , México
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Carrizo D, Brennan SF, Chevallier OP, Woodside J, Cooper KM, Cantwell MM, Cuskelly G, Elliott CT. Distribution of serum levels of persistent organic pollutants, heterocyclic aromatic amine theoretical intake and nutritional cofactors in a semi-rural island population. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:22393-22401. [PMID: 28803433 DOI: 10.1007/s11356-017-9851-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 07/28/2017] [Indexed: 06/07/2023]
Abstract
Persistent organic pollutant (POP) exposure is strongly associated with negative health effects in humans. Heterocyclic aromatic amines (HAAs) are formed during high temperature cooking of foods (i.e. meat and fish). Human exposure to HAA is through food consumption and from similar food groups to POPs. A study of serum samples for POPs in a non-occupational exposed population (n = 149, age range 18-80 years, recruited in 2012) and comparison with estimated HAA daily intake calculations based on food diaries were undertaken. Three different age groups (group 1, 18-29 years; group 2, 30-44 years; and group 3, 45-80 years) were used to explore possible relationships between POP levels present in blood, HAA intake and nutritional cofactors. Significant differences (p < 0.05) between groups (1 and 3) for POP levels were found for p,p'-DDE, polychlorinated biphenyl (PCB) 153, PCB 138 and the sum of PCBs. A similar trend was found between groups 2 and 3 for PCB 153 and sum of PCBs. Significant differences were found between groups 1 and 3 and groups 2 and 3 for HAA intake., i.e. HAA intake was lowest in those of middle age, which may well reflect a different pathway of human exposure between HAA and POPs through the diet preferences.
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Affiliation(s)
- Daniel Carrizo
- Astrobiology Centre (INTA-CSIC), Department of Planetology and Habitability, Torrejón de Ardóz, 28850, Madrid, Spain.
- Institute for Global Food Security, Queen's University, 18-30 Malone Road, Belfast, BT9 5BN, UK.
| | - Sarah F Brennan
- Centre for Public Health, School of Medicine, Dentistry and Biomedical Science, Queen's University Belfast, University Road, Belfast, BT12 6BA, UK
| | - Olivier P Chevallier
- Institute for Global Food Security, Queen's University, 18-30 Malone Road, Belfast, BT9 5BN, UK
| | - Jayne Woodside
- UKCRC Centre of Excellence for Public Health (Northern Ireland), Institute of Clinical Science B, Royal Victoria Hospital, Grosvenor Road, Belfast, BT12 6BJ, UK
| | - Kevin M Cooper
- Institute for Global Food Security, Queen's University, 18-30 Malone Road, Belfast, BT9 5BN, UK
| | - Marie M Cantwell
- Centre for Public Health, School of Medicine, Dentistry and Biomedical Science, Queen's University Belfast, University Road, Belfast, BT12 6BA, UK
| | - Geraldine Cuskelly
- Institute for Global Food Security, Queen's University, 18-30 Malone Road, Belfast, BT9 5BN, UK
| | - Christopher T Elliott
- Institute for Global Food Security, Queen's University, 18-30 Malone Road, Belfast, BT9 5BN, UK
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11
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Hernández-Mariano JÁ, Torres-Sánchez L, Bassol-Mayagoitia S, Escamilla-Nuñez MC, Cebrian ME, Villeda-Gutiérrez ÉA, López-Rodríguez G, Félix-Arellano EE, Blanco-Muñoz J. Effect of exposure to p,p´-DDE during the first half of pregnancy in the maternal thyroid profile of female residents in a Mexican floriculture area. ENVIRONMENTAL RESEARCH 2017; 156:597-604. [PMID: 28448812 DOI: 10.1016/j.envres.2017.04.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 04/10/2017] [Accepted: 04/11/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Dichlorodiphenyldichloroethene (p,p´-DDE), the main metabolite of dichlorodiphenyltrichloroethane (DDT), has been associated with changes in human thyroid hormone levels. Maternal thyroid hormones are essential for adequate fetal neurodevelopment during the first half of pregnancy. OBJECTIVE To evaluate the association between maternal p,p´-DDE concentration and the maternal thyroid profile during the first half of pregnancy. MATERIALS AND METHODS We analyzed the information of 430 pregnant women from a Mexican floriculture area, with a gestational age ≤16 weeks. By questionnaire, we obtained sociodemographic, reproductive, and life-style, information. Serum concentrations of thyroid stimulating hormone (TSH), and total and free T3 and T4 were determined by means of Enzyme-Linked ImmunoSorbent Assay (ELISA). p,p´-DDE was analyzed by Gas Chromatography. The association between p,p´-DDE and thyroid profile was assessed through linear and logistic regression models. RESULTS Thirty eight percent of women had p,p´-DDE levels below the Limit of Detection and 12.3% below the Limit of Quantification. Within the quantifiable range, median was 53.03ng/g. TSH >2.5 mIU/L was present in 9.3% of women; 47.7% had isolated hypothyroxinemia; 3.5% had subclinical hypothyroidism, and 5.8% had overt hypothyroidism. We observed a significant positive association between quantifiable p,p´-DDE and total T3 serum levels in comparison with those with concentrations below the Limit of Detection (β=0.19; 95% CI=0.06, 0.34). There were no significant associations with other hormones of the thyroid profile or with clinical diagnosis. CONCLUSIONS Our findings suggest that p,p´-DDE exposure, even at low concentrations, could disrupt thyroid homeostasis during pregnancy.
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Affiliation(s)
| | - Luisa Torres-Sánchez
- Instituto Nacional de Salud Pública (National Institute of Public Health), Cuernavaca, México
| | | | | | - Mariano E Cebrian
- Departamento de Toxicología. Centro de Investigación y Estudios Avanzados (CINVESTAV), Instituto Politécnico Nacional, México D.F., México
| | | | | | | | - Julia Blanco-Muñoz
- Instituto Nacional de Salud Pública (National Institute of Public Health), Cuernavaca, México.
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12
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Knudsen GA, Hughes MF, Sanders JM, Hall SM, Birnbaum LS. Estimation of human percutaneous bioavailability for two novel brominated flame retardants, 2-ethylhexyl 2,3,4,5-tetrabromobenzoate (EH-TBB) and bis(2-ethylhexyl) tetrabromophthalate (BEH-TEBP). Toxicol Appl Pharmacol 2016; 311:117-127. [PMID: 27732871 DOI: 10.1016/j.taap.2016.10.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 10/04/2016] [Accepted: 10/07/2016] [Indexed: 01/07/2023]
Abstract
2-Ethylhexyl-2,3,4,5-tetrabromobenzoate (EH-TBB) and bis(2-ethylhexyl)tetrabromophthalate (BEH-TEBP) are novel brominated flame retardants used in consumer products. A parallelogram approach was used to predict human dermal absorption and flux for EH-TBB and BEH-TEBP. [14C]-EH-TBB or [14C]-BEH-TEBP was applied to human or rat skin at 100nmol/cm2 using a flow-through system. Intact rats received analogous dermal doses. Treated skin was washed and tape-stripped to remove "unabsorbed" [14C]-radioactivity after continuous exposure (24h). "Absorbed" was quantified using dermally retained [14C]-radioactivity; "penetrated" was calculated based on [14C]-radioactivity in media (in vitro) or excreta+tissues (in vivo). Human skin absorbed EH-TBB (24±1%) while 0.2±0.1% penetrated skin. Rat skin absorbed more (51±10%) and was more permeable (2±0.5%) to EH-TBB in vitro; maximal EH-TBB flux was 11±7 and 102±24pmol-eq/cm2/h for human and rat skin, respectively. In vivo, 27±5% was absorbed and 13% reached systemic circulation after 24h (maximum flux was 464±65pmol-eq/cm2/h). BEH-TEBP in vitro penetrance was minimal (<0.01%) for rat or human skin. BEH-TEBP absorption was 12±11% for human skin and 41±3% for rat skin. In vivo, total absorption was 27±9%; 1.2% reached systemic circulation. In vitro maximal BEH-TEBP flux was 0.3±0.2 and 1±0.3pmol-eq/cm2/h for human and rat skin; in vivo maximum flux for rat skin was 16±7pmol-eq/cm2/h. EH-TBB was metabolized in rat and human skin to tetrabromobenzoic acid. BEH-TEBP-derived [14C]-radioactivity in the perfusion media could not be characterized. <1% of the dose of EH-TBB and BEH-TEHP is estimated to reach the systemic circulation following human dermal exposure under the conditions tested. CHEMICAL COMPOUNDS STUDIED IN THIS ARTICLE 2-Ethylhexyl 2,3,4,5-tetrabromobenzoate (PubChem CID: 71316600; CAS No. 183658-27-7 FW: 549.92g/mol logPest: 7.73-8.75 (12)) Abdallah et al., 2015a. Other published abbreviations for 2-ethylhexyl-2,3,4,5-tetrabromobenzoate are TBB EHTeBB or EHTBB Abdallah and Harrad, 2011. bis(2-ethylhexyl) tetrabromophthalate (PubChem CID: 117291; CAS No. 26040-51-7 FW: 706.14g/mol logPest: 9.48-11.95 (12)). Other published abbreviations for bis(2-ethylhexyl)tetrabromophthalate are TeBrDEPH TBPH or BEHTBP.
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Affiliation(s)
- Gabriel A Knudsen
- NCI Laboratory of Toxicology and Toxicokinetics, 111 T W Alexander Dr., Research Triangle Park, NC, USA.
| | - Michael F Hughes
- Integrated Systems Toxicology Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA
| | - J Michael Sanders
- NCI Laboratory of Toxicology and Toxicokinetics, 111 T W Alexander Dr., Research Triangle Park, NC, USA
| | - Samantha M Hall
- NCI Laboratory of Toxicology and Toxicokinetics, 111 T W Alexander Dr., Research Triangle Park, NC, USA
| | - Linda S Birnbaum
- NCI Laboratory of Toxicology and Toxicokinetics, 111 T W Alexander Dr., Research Triangle Park, NC, USA
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13
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Blanco-Muñoz J, Lacasaña M, López-Flores I, Rodríguez-Barranco M, González-Alzaga B, Bassol S, Cebrian ME, López-Carrillo L, Aguilar-Garduño C. Association between organochlorine pesticide exposure and thyroid hormones in floriculture workers. ENVIRONMENTAL RESEARCH 2016; 150:357-363. [PMID: 27344267 DOI: 10.1016/j.envres.2016.05.054] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 05/17/2016] [Accepted: 05/31/2016] [Indexed: 06/06/2023]
Abstract
Several studies have suggested that exposure to DDT may be related to changes in thyroid hormone levels in animals and humans, even though results across studies are inconsistent. The aim of this study was to assess the association between exposure to p,p'-DDE (a stable metabolite of DDT) and serum levels of thyroid hormones in floriculture workers. A longitudinal study was conducted on 136 male subjects from the States of Mexico and Morelos, Mexico, who were occupationally exposed to pesticides, during agricultural periods of high (rainy season) and low (dry season) levels of pesticide application. Using a structured questionnaire, a survey was carried out on socio-demographic characteristics, anthropometry, clinical history, alcohol and tobacco consumption, residential chemical exposure, and occupational history. Blood and urine samples were collected to determine serum levels of TSH, total T3, total T4, and p,p'-DDE, and metabolites of organophosphate pesticides (OP), respectively. The analysis of the associations between p,p'-DDE levels and thyroid hormone profile adjusting by potential confounding variables including urinary OP metabolites was carried out using multivariate generalized estimating equation (GEE) models. Our results showed that the geometric means of p,p'-DDE levels were 6.17 ng/ml and 4.71 ng/ml in the rainy and dry seasons, respectively. We observed positive associations between the serum levels of p,p'-DDE and those of total T3 (β=0.01, 95% CI: -0.009, 0.03), and total T4 (β=0.08, 95% CI:0.03, 0.14) and negative but no significant changes in TSH in male floricultural workers, supporting the hypothesis that acts as thyroid disruptor in humans.
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Affiliation(s)
- Julia Blanco-Muñoz
- Instituto Nacional de Salud Pública (National Institute of Public Health), Cuernavaca, Mexico
| | - Marina Lacasaña
- Escuela Andaluza de Salud Pública (Andalusian School of Public Health), Granada, Spain; Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain; CIBER of Epidemiology and Public Health (CIBERESP), Madrid, Spain.
| | - Inmaculada López-Flores
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain; Departamento de Genética. Universidad de Granada, Spain
| | - Miguel Rodríguez-Barranco
- Escuela Andaluza de Salud Pública (Andalusian School of Public Health), Granada, Spain; Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain
| | - Beatriz González-Alzaga
- Escuela Andaluza de Salud Pública (Andalusian School of Public Health), Granada, Spain; Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain
| | - Susana Bassol
- Universidad Autónoma de Coahuila, Torreón, Coahuila, Mexico
| | - Mariano E Cebrian
- Departamento de Toxicología. Centro de Investigación y Estudios Avanzados (CINVESTAV), Instituto Politécnico Nacional, México D.F., Mexico
| | - Lizbeth López-Carrillo
- Instituto Nacional de Salud Pública (National Institute of Public Health), Cuernavaca, Mexico
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Zhao P, Shi J, Qiu L, Li J, Jin M, Xu F, Gong W, Wu Y. Evaluation of the Methods to Predict Total Serum Lipids and to Determine 22 POPs in the Serum of Pregnant Women. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2016; 97:124-130. [PMID: 27107588 DOI: 10.1007/s00128-016-1807-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 04/12/2016] [Indexed: 06/05/2023]
Abstract
The objectives of this study were to determine the suitability of total serum lipid (TSL) concentrations, which were calculated by three different formulae, for pregnant women and to optimize the improved matrix solid-phase dispersion (MSPD) method. The results showed that the TSL predicted by the three formulae were significantly correlated to our measured values (sums of the total cholesterol, triglycerides and phospholipids contents). In particular, one of formulae was the most statistically suitable for pregnant women. Meanwhile, an improved MSPD method was developed to extract 22 POPs. The developed MSPD method was compared with SPE and EPA (8081 & 8082) to evaluate the performance of each extract method. The method validation showed that the results obtained using the improved MSPD method were closest to the actual concentration (adjusted by lipids), and the dispersion of the data was minimal.
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Affiliation(s)
- Peng Zhao
- Jiangbei Center for Disease Control and Prevention, Ningbo, 315020, China
| | - Jiawei Shi
- Ningbo Municipal Center for Disease Control and Prevention, Ningbo, 315010, China.
| | - Lixiao Qiu
- Jiangbei Center for Disease Control and Prevention, Ningbo, 315020, China
| | - Jige Li
- Ningbo Municipal Center for Disease Control and Prevention, Ningbo, 315010, China
| | - Micong Jin
- Ningbo Municipal Center for Disease Control and Prevention, Ningbo, 315010, China
| | - Fenfen Xu
- Jiangbei Center for Disease Control and Prevention, Ningbo, 315020, China
| | - Wenjie Gong
- Cixi Center for Disease Control and Prevention, Ningbo, 315020, China
| | - Yifeng Wu
- Jiangbei Center for Disease Control and Prevention, Ningbo, 315020, China
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15
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Ochoa-Martinez AC, Orta-Garcia ST, Rico-Escobar EM, Carrizales-Yañez L, Del Campo JDM, Pruneda-Alvarez LG, Ruiz-Vera T, Gonzalez-Palomo AK, Piña-Lopez IG, Torres-Dosal A, Pérez-Maldonado IN. Exposure Assessment to Environmental Chemicals in Children from Ciudad Juarez, Chihuahua, Mexico. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2016; 70:657-670. [PMID: 26987540 DOI: 10.1007/s00244-016-0273-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 03/04/2016] [Indexed: 06/05/2023]
Abstract
It has been demonstrated that the human biomonitoring of susceptible populations is a valuable method for the identification of critical contaminants. Therefore, the purpose of this study was to assess the exposure profile for arsenic (As), lead (Pb), mercury (Hg), 1-hydroxypyrene (1-OHP), 1,1-bis(p-chlorophenyl)-2,2,2-trichloroethane (DDT), 1,1-dichloro-2,2-bis(p-chlorophenyl) ethylene (DDE), polybrominated diphenyl ethers (PBDEs), and polychlorinated biphenyls (PCBs) in children living in Ciudad Juarez, Chihuahua, Mexico (a major manufacturing center in Mexico). In 2012, we evaluated a total of 135 healthy children living in Ciudad Juarez since birth. The total PBDEs levels ranged from nondetectable (< LOD) to 215 ng/g lipid, with a mean total PBDEs level of 29.5 ± 53.0 ng/g lipid (geometric mean ± standard deviation). The mean total PCBs level in the study participants was 29.0 ± 10.5 ng/g lipid (range 4.50-50.0 ng/g lipid). The mean concentration of total DDT (DDT + DDE) was 11.9 ± 6.70 ng/g lipid (range 3.00-26.0 ng/g lipid). The mean 1-OHP levels was 1.2 ± 1.1 µmol/mol creatinine (range <LOD to 3.90 µmol/mol creatinine). Regarding heavy metals levels, the mean urinary As levels was 19.5 ± 3.07 µg/g creatinine, for urinary mercury the levels ranged from <LOD to 11.5 µg/L, with a mean value of 2.10 µg/L, and finally, the mean blood lead level was 4.20 ± 3.80 µg/dL. In conclusion, our data indicate high exposure levels to chemicals analyzed in the children living in the study community. Therefore, a biomonitoring program for the surveillance of the child population in Ciudad Juarez is necessary.
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Affiliation(s)
- Angeles C Ochoa-Martinez
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, Avenida Sierra Leona No. 550, Colonia Lomas Segunda Sección, 78210, San Luis Potosí, SLP, Mexico
- Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
| | - Sandra T Orta-Garcia
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, Avenida Sierra Leona No. 550, Colonia Lomas Segunda Sección, 78210, San Luis Potosí, SLP, Mexico
- Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
| | - Edna M Rico-Escobar
- Escuela de Medicina y Nutrición, Universidad de Ciudad Juárez, Ciudad Juárez, Chihuahua, Mexico
| | - Leticia Carrizales-Yañez
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, Avenida Sierra Leona No. 550, Colonia Lomas Segunda Sección, 78210, San Luis Potosí, SLP, Mexico
- Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
| | - Jorge D Martin Del Campo
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, Avenida Sierra Leona No. 550, Colonia Lomas Segunda Sección, 78210, San Luis Potosí, SLP, Mexico
- Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
| | - Lucia G Pruneda-Alvarez
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, Avenida Sierra Leona No. 550, Colonia Lomas Segunda Sección, 78210, San Luis Potosí, SLP, Mexico
- Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
| | - Tania Ruiz-Vera
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, Avenida Sierra Leona No. 550, Colonia Lomas Segunda Sección, 78210, San Luis Potosí, SLP, Mexico
- Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
| | - Ana K Gonzalez-Palomo
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, Avenida Sierra Leona No. 550, Colonia Lomas Segunda Sección, 78210, San Luis Potosí, SLP, Mexico
- Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
| | - Iris G Piña-Lopez
- Hospital General de Zona con Medicina Familiar No. 1, Instituto Mexicano del Seguro Social, Pachuca, Hidalgo, Mexico
| | - Arturo Torres-Dosal
- El Colegio de la Frontera Sur (ECOSUR), Unidad San Cristóbal, San Cristobal De Las Casas, Chiapas, Mexico
| | - Ivan N Pérez-Maldonado
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, Avenida Sierra Leona No. 550, Colonia Lomas Segunda Sección, 78210, San Luis Potosí, SLP, Mexico.
- Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico.
- Unidad Académica Multidisciplinaria Zona Media, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico.
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16
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Ma X, Liu S, Liu Y, Gu G, Xia C. Comparative study on catalytic hydrodehalogenation of halogenated aromatic compounds over Pd/C and Raney Ni catalysts. Sci Rep 2016; 6:25068. [PMID: 27113406 PMCID: PMC4844995 DOI: 10.1038/srep25068] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 04/11/2016] [Indexed: 11/23/2022] Open
Abstract
Catalytic hydrodehalogenation (HDH) has proved to be an efficient approach to dispose halogenated aromatic compounds (HACs). Liquid-phase HDH of single and mixed halobenzenes/4-halophenols with H2 over 5% Pd/C and Raney Ni catalyst are investigated and compared. For liquid-phase HDH of single HACs, hydrogenolytic scission reactivity of C-X bonds decreases in order of C-Br > C-Cl > C-I > C-F over Pd/C catalyst, and in order of C-I > C-Br > C-Cl > C-F over Raney Ni catalyst. To clarify the reason why hydrogenolytic scission reactivity of C-X bonds over Pd/C and Raney Ni catalysts exhibits different trends, liquid-phase HDH of mixed HACs over Pd/C and Raney Ni catalysts were studied, and catalysts are characterized by SEM, EDX, and XRD techniques. It was found that the high adsorption of iodoarenes on Pd/C catalyst caused the HDH reactivity of iodoarenes to be lower than that of chloroarenes and bromoarenes in the HDH of single HACs. Moreover, the adsorption of in situ produced iodine ion (I−) to catalyst surface would result in the decline of catalytic activity, which might be the main reason why the HDH reactivity of HACs in the presence of NaI is rather low.
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Affiliation(s)
- Xuanxuan Ma
- School of Resources and Environmental Engineering, Ludong University, Yantai 264025, China
| | - Sujing Liu
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Ying Liu
- School of Resources and Environmental Engineering, Ludong University, Yantai 264025, China
| | - Guodong Gu
- Alliance Pharma, Inc. 17 Lee Boulevard Malvern, PA 19355, USA
| | - Chuanhai Xia
- School of Resources and Environmental Engineering, Ludong University, Yantai 264025, China
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17
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Knudsen GA, Sanders JM, Birnbaum LS. Disposition of the emerging brominated flame retardant, bis(2-ethylhexyl) tetrabromophthalate, in female Sprague Dawley rats: effects of dose, route and repeated administration. Xenobiotica 2016; 47:245-254. [PMID: 27098498 DOI: 10.1080/00498254.2016.1174793] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
1. Bis(2-ethylhexyl)-tetrabromophthalate (BEH-TEBP; CAS No. 26040-51-7; PubChem CID: 117291; MW 706.15 g/mol, elsewhere: TeBrDEPH, TBPH, or BEHTBP) is used as an additive brominated flame retardant in consumer products. 2. Female Sprague Dawley rats eliminated 92-98% of [14C]-BEH-TEBP unchanged in feces after oral administration (0.1 or 10 μmol/kg). A minor amount of each dose (0.8-1%) was found in urine after 72 h. Disposition of orally administered BEH-TEBP in male B6C3F1/Tac mice was similar to female rats. 3. Bioaccumulation of [14C]-radioactivity was observed in liver and adrenals following 10 daily oral administrations (0.1 μmol/kg/day). These tissues contained 5- and 10-fold higher concentrations of [14C]-radioactivity, respectively, versus a single dose. 4. IV-administered [14C]-BEH-TEBP (0.1 μmol/kg) was slowly eliminated in feces, with >15% retained in tissues after 72 h. Bile and fecal extracts from these rats contained the metabolite mono-ethylhexyl tetrabromophthalate (TBMEHP). 5. BEH-TEBP was poorly absorbed, minimally metabolized and eliminated mostly by the fecal route after oral administration. Repeated exposure to BEH-TEBP led to accumulation in some tissues. The toxicological significance of this effect remains to be determined. This work was supported by the Intramural Research Program of the National Cancer Institute at the National Institutes of Health (Project ZIA BC 011476).
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18
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Orta-García ST, Ochoa-Martinez AC, Carrizalez-Yáñez L, Varela-Silva JA, Pérez-Vázquez FJ, Pruneda-Álvarez LG, Torres-Dosal A, Guzmán-Mar JL, Pérez-Maldonado IN. Persistent Organic Pollutants and Heavy Metal Concentrations in Soil from the Metropolitan Area of Monterrey, Nuevo Leon, Mexico. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2016; 70:452-463. [PMID: 26577448 DOI: 10.1007/s00244-015-0239-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 11/02/2015] [Indexed: 06/05/2023]
Abstract
The purpose of this study was to assess the levels of polybrominated diphenyl ethers (PBDEs), polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane (DDT), dichlorodiphenyldichloroethane (DDE), and four heavy metals (arsenic, cadmium, and lead) in outdoor surface soils (50 samples) collected from the metropolitan area of Monterrey in Mexico. Total PBDEs levels ranged from 1.80 to 127 µg/kg, with mean total PBDEs level of 14.2 ± 21.5 µg/kg (geometric mean ± standard deviation). For PCBs, the mean total level in the studied soils was 23.5 ± 20.2 µg/kg (range 4.0-65.5 µg/kg). An important finding in our study was that all soil samples (100%) had detectable levels of the metabolite p,p'-DDE. Moreover, the mean total DDT level (∑p'p-DDT and p'p-DDE) was approximately 132 ± 175 µg/kg. The mean levels for arsenic, cadmium, and lead in soil were 5.30 ± 1.35 (range 1.55-7.85) mg/kg, 2.20 ± 1.20 (range 0.65-6.40) mg/kg, and 455 ± 204 (range 224-1230) mg/kg, respectively. Our study has several limitations, the most notable of which is the small sample of soils evaluated. However, this screening study provided concentration data for the occurrence of POPs and four heavy metals in soil from the metropolitan area of Monterrey, Nuevo Leon, Mexico, and taking into consideration that soil is an important pathway of exposure for people, a biomonitoring program for the surveillance of the general population in the metropolitan area of Monterrey, Nuevo Leon is deemed necessary.
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Affiliation(s)
- Sandra Teresa Orta-García
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
- Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
| | - Angeles Catalina Ochoa-Martinez
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
- Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
| | - Leticia Carrizalez-Yáñez
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
- Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
| | - José Antonio Varela-Silva
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
- Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
- Facultad de Enfermería, Universidad Autónoma de Zacatecas, Zacatecas, Zacatecas, Mexico
| | - Francisco Javier Pérez-Vázquez
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
- Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
| | - Lucia Guadalupe Pruneda-Álvarez
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
- Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico
| | - Arturo Torres-Dosal
- El Colegio de la Frontera Sur (ECOSUR), Unidad San Cristóbal, San Cristóbal de Las Casas, Chiapas, Mexico
| | - Jorge Luis Guzmán-Mar
- Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León, Mexico
| | - Iván N Pérez-Maldonado
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico.
- Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico.
- Unidad Académica Multidisciplinaria Zona Media, Universidad Autónoma de San Luis Potosí, Rioverde, San Luis Potosí, Mexico.
- , Avenida Sierra Leona No. 550, Colonia Lomas Segunda Sección, San Luis Potosí, 78210, SLP, Mexico.
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Fromme H, Becher G, Hilger B, Völkel W. Brominated flame retardants – Exposure and risk assessment for the general population. Int J Hyg Environ Health 2016; 219:1-23. [DOI: 10.1016/j.ijheh.2015.08.004] [Citation(s) in RCA: 181] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 08/10/2015] [Accepted: 08/12/2015] [Indexed: 01/01/2023]
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Jasso-Pineda Y, Díaz-Barriga F, Yáñez-Estrada L, Pérez-Vázquez FJ, Pérez-Maldonado IN. DNA damage in Mexican children living in high-risk contaminated scenarios. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 518-519:38-48. [PMID: 25747362 DOI: 10.1016/j.scitotenv.2015.02.073] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 02/21/2015] [Accepted: 02/21/2015] [Indexed: 06/04/2023]
Abstract
The aim of this study was to evaluate the deoxyribonucleic acid (DNA) damage (as a biomarker of biological effects) in children living in areas at high risk of contamination in Mexico using the comet assay. The alkaline comet assay was performed in order to assess DNA damage levels in blood cells of 276 children living in eleven communities in four states of Mexico. Moreover, levels of arsenic and 1-hydroxypyrene (1-OHP) in urine and lead and total DDT [sum of 1,1-dichloro-2,2-bis(p-chlorophenyl) ethylene (DDE) and 1,1-bis(p-chlorophenyl)-2,2,2-trichloroethane (DDT)] in blood were quantified. We found urinary 1-OHP levels between <LOD and 14.5 μmol/mol creatinine; for arsenic, the urinary levels were 3.5-180 μg/g creatinine (range). Lead levels in blood ranged from 0.5 to 24 μg/dL and finally, the levels of total DDT (DDE and DDT) ranged from <LOD to 32,000 ng/g lipid. Regarding DNA damage (comet assay), the most important finding in our study was that children exposed to a chemical mixture [high levels of exposure to polycyclic aromatic hydrocarbons (PAHs) and DDT were found] had the significant highest DNA damage level (p<0.05) in their blood cells (olive tail moment=7.5±3.5), when compared with DNA damage levels in children living in the other scenarios assessed in this work. Finally, significant correlations were observed between urinary arsenic levels (r=0.32, p<0.05); urinary 1-OHP levels (r=0.65, p<0.01); total DDT in blood levels (r=0.59, p<0.01) and DNA damage. In conclusion, the data indicates that children living in areas which are at high risk of contamination showed high levels of biomarkers of exposure in urine or blood. Moreover, the exposure levels contribute to DNA damage and suggest an increased health risk in studied sites at risk of great pollution.
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Affiliation(s)
- Yolanda Jasso-Pineda
- Instituto de Investigación de Zonas Desérticas, Universidad Autónoma de San Luis Potosí, Mexico; Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, Mexico
| | - Fernando Díaz-Barriga
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, Mexico; Facultad de Medicina, Universidad Autónoma de San Luis Potosí, Mexico
| | | | - Francisco Javier Pérez-Vázquez
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, Mexico; Facultad de Medicina, Universidad Autónoma de San Luis Potosí, Mexico
| | - Ivan Nelinho Pérez-Maldonado
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, Mexico; Facultad de Medicina, Universidad Autónoma de San Luis Potosí, Mexico; Unidad Académica Multidisciplinaria Zona Media, Universidad Autónoma de San Luis Potosí, Mexico.
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Perez-Vazquez FJ, Flores-Ramirez R, Ochoa-Martinez AC, Orta-Garcia ST, Hernandez-Castro B, Carrizalez-Yañez L, Pérez-Maldonado IN. Concentrations of persistent organic pollutants (POPs) and heavy metals in soil from San Luis Potosí, México. ENVIRONMENTAL MONITORING AND ASSESSMENT 2015; 187:4119. [PMID: 25480599 DOI: 10.1007/s10661-014-4119-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Accepted: 10/28/2014] [Indexed: 06/04/2023]
Abstract
The aim of this study was to assess the levels of polybrominated diphenyl ethers (PBDEs), polychlorinated biphenyls (PCBs), p,p'-dichlorodiphenyltrichloroethane (DDT), p,p'-dichlorodiphenyldichloroethylene (DDE), and four heavy metals (arsenic, cadmium, lead, and mercury) in soil from the city of San Luis Potosí in Mexico. In order to confirm the presence of the previously mentioned compounds, outdoor surface soil samples were collected and analyzed by gas chromatography/mass spectrometer for PBDEs, PCBs, DDT, and DDE. Meanwhile, heavy metals were quantified using the atomic absorption spectrophotometry technique. The total PBDEs levels ranged from 5.0 to 134 μg/kg dry weight (dw), with a total mean PBDEs level of 22.0 ± 32.5 μg/kg dw (geometric mean ± standard deviation). For PCBs, the total mean level in the studied soil was 21.6 ± 24.7 μg/kg dw (range, <LOD to 80.5). An important finding in our study was that all soil samples (100 %) had detectable levels of the metabolite DDE. Moreover, the total mean DDT level (∑ DDT and DDE) was approximately 5.50 ± 4.50 μg/kg dw. The mean levels for arsenic, mercury, cadmium, and lead in soil samples were 7.20 ± 10.7 (range, 15.0 to 265 mg/kg dw), 0.45 ± 0.48 (range, <LOD to 2.50 mg/kg dw), 3.00 ± 3.00 (range, 1.00-13.0 mg/kg dw), and 108 ± 105 (range, 25.0 to 435 mg/kg dw), respectively. This screening study provides us with concentration data for the occurrence of persistent organic pollutants (POPs) and four heavy metals in soil samples from the city of San Luis Potosí, Mexico, and considering that soil is an important pathway of exposure for people, a biomonitoring program for the surveillance of the general population in the city of San Luis Potosi is necessary.
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Affiliation(s)
- Francisco Javier Perez-Vazquez
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
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Adlard B, Davis K, Liang CL, S Curren M, Rodríguez-Dozal S, Riojas-Rodríguez H, Hernández-Ávila M, Foster W, Needham L, Wong LY, Weber JP, Marro L, Leech T, Van Oostdam J. Persistent organic pollutants (POPs) and metals in primiparous women: a comparison from Canada and Mexico. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 500-501:302-13. [PMID: 25233368 PMCID: PMC4825328 DOI: 10.1016/j.scitotenv.2014.08.074] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 07/30/2014] [Accepted: 08/21/2014] [Indexed: 05/09/2023]
Abstract
Under the North American Commission for Environmental Cooperation (CEC) and its Sound Management of Chemicals (SMOC) program, a tri-national human contaminant monitoring initiative was completed to provide baseline exposure information for several environmental contaminants in Canada, Mexico and the United States (U.S). Blood samples were collected from primiparous women in Canada and Mexico, and were analysed for a suite of environmental contaminants including polychlorinated biphenyls (PCBs), dichlorodiphenyldichloroethylene(p,p'-DDE),beta-hexachlorocyclohexane (β-HCH), mercury and lead. A multiple stepwise linear regression analysis was conducted using data from Canadian and Mexican primiparous mothers, adjusting for ethnicity group, age, pre-pregnancy BMI, years at current city and ever-smoking status. Concentrations of p,p'-DDE, β-HCH, and lead were found to be higher among Mexican participants; however, concentrations of most PCBs among Mexican participants were similar to Canadian primiparous women after adjusting for covariates. Concentrations of total mercury were generally higher among Mexican primiparous women although this difference was smaller as age increased. This initial dataset can be used to determine priorities for future activities and to track progress in the management of the selected chemicals, both domestically and on a broader cooperative basis within North America.
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Affiliation(s)
- Bryan Adlard
- Chemicals Surveillance Bureau, Health Environments and Consumer Safety Branch, Health Canada, 269 Laurier Avenue West, Ottawa, ON, Canada K1A 0K9.
| | - Karelyn Davis
- Environmental Health Science and Research Bureau, Health Environments and Consumer Safety Branch, Health Canada, 50 Colombine Driveway, Tunney's Pasture, Ottawa, ON, Canada K1A 0K9.
| | - Chun Lei Liang
- Environmental Health Science and Research Bureau, Health Environments and Consumer Safety Branch, Health Canada, 50 Colombine Driveway, Tunney's Pasture, Ottawa, ON, Canada K1A 0K9.
| | - Meredith S Curren
- Chemicals Surveillance Bureau, Health Environments and Consumer Safety Branch, Health Canada, 269 Laurier Avenue West, Ottawa, ON, Canada K1A 0K9.
| | - Sandra Rodríguez-Dozal
- Environmental Health Department, Center for Population Heath Research, National Institute of Public Health. Av. Universidad #655, CP 62100 Cuernavaca, Morelos, Mexico.
| | - Horacio Riojas-Rodríguez
- Environmental Health Department, Center for Population Heath Research, National Institute of Public Health. Av. Universidad #655, CP 62100 Cuernavaca, Morelos, Mexico.
| | - Mauricio Hernández-Ávila
- Office of the Director, National Institute of Public Health. Av. Universidad #655, CP 62100 Cuernavaca, Morelos, Mexico.
| | - Warren Foster
- Department of Obstetrics & Gynecology, McMaster University, 1200 Main Street West, Hamilton, ON, Canada L8N 3Z5.
| | - Larry Needham
- National Center of Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Lee-Yang Wong
- National Center of Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| | - Jean-Philippe Weber
- Institut national de santé publique, 945 Avenue Wolfe, Québec, QC, Canada G1V 5B3.
| | - Leonora Marro
- Environmental Health Science and Research Bureau, Health Environments and Consumer Safety Branch, Health Canada, 50 Colombine Driveway, Tunney's Pasture, Ottawa, ON, Canada K1A 0K9.
| | - Tara Leech
- Chemicals Surveillance Bureau, Health Environments and Consumer Safety Branch, Health Canada, 269 Laurier Avenue West, Ottawa, ON, Canada K1A 0K9.
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Gaspar-Ramírez O, Pérez-Vázquez FJ, Salgado-Bustamante M, González-Amaro R, Hernandez-Castro B, Pérez-Maldonado IN. DDE and PCB 153 independently induce aryl hydrocarbon receptor (AhR) expression in peripheral blood mononuclear cells. J Immunotoxicol 2014; 12:266-72. [DOI: 10.3109/1547691x.2014.960108] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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Flores-Ramírez R, Ortiz-Pérez M, Batres-Esquivel L, Castillo C, Ilizaliturri-Hernández C, Díaz-Barriga F. Rapid analysis of persistent organic pollutants by solid phase microextraction in serum samples. Talanta 2014; 123:169-78. [DOI: 10.1016/j.talanta.2014.02.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 02/09/2014] [Accepted: 02/10/2014] [Indexed: 11/29/2022]
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