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Tursi AR, Lindeman B, Kristoffersen AB, Hjertholm H, Bronder E, Andreassen M, Husøy T, Dirven H, Andorf S, Nygaard UC. Immune cell profiles associated with human exposure to perfluorinated compounds (PFAS) suggest changes in natural killer, T helper, and T cytotoxic cell subpopulations. ENVIRONMENTAL RESEARCH 2024; 256:119221. [PMID: 38795951 DOI: 10.1016/j.envres.2024.119221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 05/21/2024] [Accepted: 05/22/2024] [Indexed: 05/28/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) constitutes a group of highly persistent man-made substances. Recent evidence indicates that PFAS negatively impact the immune system. However, it remains unclear how different PFAS are associated with alterations in circulating leukocyte subpopulations. More detailed knowledge of such potential associations can provide better understanding into mechanisms of PFAS immunotoxicity in humans. In this exploratory study, associations of serum levels of common PFAS (perfluorooctanoic acid (PFOA), perfluorooctane sulfonic acid (PFOS), perfluorononanoic acid (PFNA), and perfluorohexane sulfonic acid (PFHxS)) and immune cell profiles of peripheral blood mononuclear cells, both with and without immunostimulation, were investigated. High-dimensional single cell analysis by mass cytometry was done on blood leukocytes from fifty participants in the Norwegian human biomonitoring EuroMix study. Different PFAS were associated with changes in various subpopulations of natural killer (NK), T helper (Th), and cytotoxic T (Tc) cells. Broadly, PFAS concentrations were related to increased frequencies of NK cells and activated subpopulations of NK cells. Additionally, increased levels of activated T helper memory cell subpopulations point to Th2/Th17 and Treg-like skewed profiles. Finally, PFAS concentrations were associated with decreased frequencies of T cytotoxic cell subpopulations with CXCR3+ effector memory (EM) phenotypes. Several of these observations point to biologically plausible mechanisms that may contribute to explaining the epidemiological reports of immunosuppression by PFAS. Our results suggest that PFAS exposures even at relatively low levels are associated with changes in immune cell subpopulations, a finding which should be explored more thoroughly in a larger cohort. Additionally, causal relationships should be confirmed in experimental studies. Overall, this study demonstrates the strength of profiling by mass cytometry in revealing detailed changes in immune cells at a single cell level.
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Affiliation(s)
- Amanda R Tursi
- Department of Biomedical Informatics, University of Cincinnati College of Medicine, Cincinnati, OH, USA; Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | | | | | | | | | | | - Trine Husøy
- Norwegian Institute of Public Health, Oslo, Norway
| | | | - Sandra Andorf
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA; Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
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2
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Bangma J, Pu S, Robuck A, Boettger J, Guillette T, McCord J, Rock KD, Sobus J, Jackson TW, Belcher SM. Combined screening and retroactive data mining for emerging perfluoroethers in wildlife and pets in the Cape Fear region of North Carolina. CHEMOSPHERE 2024; 363:142898. [PMID: 39032729 DOI: 10.1016/j.chemosphere.2024.142898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 07/15/2024] [Accepted: 07/16/2024] [Indexed: 07/23/2024]
Abstract
The recent application of non-targeted analysis (NTA) techniques in environmental monitoring has revealed numerous novel fluorinated species in surface water, wildlife, and humans in the Cape Fear River (CFR) region of North Carolina. In this study, we have re-examined archived alligator, striped bass, horse, and dog serum as well as archived seabird tissue data from previously reported exposure studies in order to extend the panel of detected novel PFAS. In this study, the compounds CF3-(OCF2)x-COOH, x = 6, 7, 8 (Abbreviated PFO6TeDA, PFO7HxDA, PFO8OcDA, respectively), and 6H-Perfluoro-3-oxa,4-methylhexanesulfonic acid (Nafion byproduct 6) were detected for the first time in environmental tissues even though these analytes were not previously detected in the CFR. Analytical standards were available for PFO6TeDA and Nafion Byproduct 6, and therefore, were quantitated in investigated tissues. PFO7HxDA and PFO8OcDA had no available standards and were semi-quantitated using NTA techniques. Of note, PFO6TeDA, PFO7HxDA, and PFO8OcDA were observed in alligator, bass, and seabird but not horse and dog. PFO6TeDA was detected at the highest frequency in all investigated tissues with PFO7HxDA and PFO8OcDA detected at lower frequencies. No Nafion Byproduct 6 values are reported in serum due to poor analytical reproducibility of the measurements. Seabird tissue to blood ratios suggests PFO6TeDA is highest in the heart, kidney, and liver and lowest in the brain. Overall, additional studies are needed to fully understand the potential impact of these additional novel PFAS on both wildlife and humans in the CFR region.
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Affiliation(s)
- Jacqueline Bangma
- Office of Research and Development, Center for Environmental Measurement and Modeling, US Environmental Protection Agency, USA.
| | - Shirley Pu
- Office of Research and Development, Center for Computational Toxicology and Exposure, US Environmental Protection Agency, USA; Oak Ridge Institute for Science and Education, Oak Ridge, TN, 37831, USA.
| | - Anna Robuck
- Office of Research and Development, Center for Environmental Measurement and Modeling, US Environmental Protection Agency, USA.
| | - Jason Boettger
- Office of Research and Development, Center for Public Health and Environmental Assessment, US Environmental Protection Agency, USA.
| | | | - James McCord
- Office of Research and Development, Center for Environmental Measurement and Modeling, US Environmental Protection Agency, USA.
| | - Kylie D Rock
- Department of Biological Sciences, Clemson University, Clemson, SC, 29634, USA.
| | - Jon Sobus
- Office of Research and Development, Center for Computational Toxicology and Exposure, US Environmental Protection Agency, USA.
| | - Thomas W Jackson
- Office of Research and Development, Center for Public Health and Environmental Assessment, US Environmental Protection Agency, USA.
| | - Scott M Belcher
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, 27695, USA.
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3
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Hughey KD, Gallagher NB, Zhao Y, Thakur N, Bradley AM, Koster van Groos PG, Johnson TJ. PFAS remediation: Evaluating the infrared spectra of complex gaseous mixtures to determine the efficacy of thermal decomposition of PFAS. CHEMOSPHERE 2024; 362:142631. [PMID: 38885768 DOI: 10.1016/j.chemosphere.2024.142631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 06/20/2024]
Abstract
Due to their widespread production and known environmental contamination, the need for the detection and remediation of per- and polyfluoroalkyl substances (PFAS) has grown quickly. While destructive thermal treatment of PFAS at low temperatures (e.g., 200-500 °C) is of interest due to lower energy and infrastructure requirements, the range of possible degradation products remains underexplored. To better understand the low temperature decomposition of PFAS species, we have coupled gas-phase infrared spectroscopy with a multivariate curve resolution (MCR) analysis and a database of high-resolution PFAS infrared reference spectra to characterize and quantify a complex mixture resulting from potassium perfluorooctanesulfonate (PFOS-K) decomposition. Beginning at 375 °C, nine prevalent decomposition products (namely smaller perfluorocarbon species) are identified and quantified.
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Affiliation(s)
- Kendall D Hughey
- Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99352, USA
| | - Neal B Gallagher
- Eigenvector Research, Inc., 196 Hyacinth Road, Manson, WA 98831, USA
| | - Yuwei Zhao
- APTIM, 17 Princess Road, Lawrenceville, NJ 08648, USA
| | - Nikita Thakur
- APTIM, 17 Princess Road, Lawrenceville, NJ 08648, USA
| | - Ashley M Bradley
- Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99352, USA
| | | | - Timothy J Johnson
- Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99352, USA.
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4
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Rong H, He L, Tong M. Transport and release behaviors of PFOA in saturated and unsaturated porous media with biochar amendment. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 346:123616. [PMID: 38382729 DOI: 10.1016/j.envpol.2024.123616] [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: 01/08/2024] [Revised: 02/15/2024] [Accepted: 02/18/2024] [Indexed: 02/23/2024]
Abstract
The widespread usage of perfluorooctanoic acid (PFOA) in daily consumer products and its high mobility in porous media have resulted in ubiquitous contamination of PFOA in the natural environment. Developing techniques to immobilize and inhibit the transport of PFOA thus is critical to reduce its potential risks. In present study, biochar, one type of environmental-friendly material produced from cellulose, was utilized in porous media to test its addition on inhibiting the transport and release of PFOA before and after aging process. We found that although PFOA had high mobility in saturated/unsaturated porous media, biochar addition could significantly inhibit PFOA transport in porous media with different saturations due to its high adsorption capacity towards PFOA. The inhibited transport of PFOA by biochar also held true in solution with copresence of natural organic matter and in actual river water. Moreover, we found that negligible PFOA was released from porous media with biochar amendment even after exposure to freeze-thaw/dry-wet treatment. PFOA adsorbed onto biochar could be completely desorbed and the biochar could be reused for subsequent cycles after desorption. Clearly, amendment of porous media with biochar would be a feasible and cost-effective method to immobilize PFOA in natural environment and reduce its environmental risks.
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Affiliation(s)
- Haifeng Rong
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, PR China
| | - Lei He
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, PR China
| | - Meiping Tong
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, PR China.
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5
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Mokra K, Kaczmarska I, Bukowska B. Perfluorooctane sulfonate (PFOS) and its selected analogs induce various cell death types in peripheral blood mononuclear cells. CHEMOSPHERE 2024; 354:141664. [PMID: 38485001 DOI: 10.1016/j.chemosphere.2024.141664] [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: 01/04/2024] [Revised: 02/29/2024] [Accepted: 03/06/2024] [Indexed: 03/19/2024]
Abstract
The perfluoalkyl substance (PFASs) perfluorooctane sulfonate (PFOS) has been widely used in industry. However, PFOS is a persistent organic pollutant and has been gradually replaced by its short-chain analogs, perfluorohexane sulfonate (PFHxS) and perfluorobutane sulfonate (PFBS). PFASs are extremely persistent and are very frequently detected among the general population. The aim of the study was to determine the effect of selected PFASs on peripheral blood mononuclear cells (PBMCs) and the mechanisms of their action. PBMCs were exposed to PFOS, PFBS and PFHxS at concentrations ranging from 0.02 to 400 μM for 24 h, they were then tested for viability, apoptosis (changes in cytosolic calcium ions level and caspase-3, -8 and -9 activation), ferroptosis (changes in chelatable iron ions level and lipid peroxidation), and autophagy (LC3-II and Raptor level assay). PFOS exposure decreased cell viability, increased calcium ion level and caspase-8 activation; it also enhanced lipid peroxidation and increased the intracellular pool of chelatable iron ions as well as LC3-II protein content. In contrast, short-chain PFBS and PFHxS induced significant changes in the markers of apoptosis but had no substantial impact on ferroptosis or autophagy markers over a wide range of concentrations. Our results indicate that only PFOS demonstrated pro-ferroptotic and pro-autophagic potential but observed changes occurred at relatively high exposure. A short-chain substitute (PFBS) exhibited strong pro-apoptotic potential at concentrations related to occupational exposure. While the short-chain PFASs strongly affected the mitochondrial pathway of apoptosis, apoptosis itself was only induced by PFBS via the intrinsic and extrinsic pathways. It seems that the length of the carbon chain in PFASs appears to determine the cell death mechanisms activated in human PBMCs following exposure. Our findings provide a new insight into the immune toxicity mechanism induced by these compounds.
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Affiliation(s)
- Katarzyna Mokra
- University of Lodz, Faculty of Biology and Environmental Protection, Department of Biophysics of Environmental Pollution, 141/143 Pomorska St., 90-236, Lodz, Poland.
| | - Izabela Kaczmarska
- University of Lodz, Faculty of Biology and Environmental Protection, Department of Biophysics of Environmental Pollution, 141/143 Pomorska St., 90-236, Lodz, Poland
| | - Bożena Bukowska
- University of Lodz, Faculty of Biology and Environmental Protection, Department of Biophysics of Environmental Pollution, 141/143 Pomorska St., 90-236, Lodz, Poland
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6
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You L, Kou J, Wang M, Ji G, Li X, Su C, Zheng F, Zhang M, Wang Y, Chen T, Li T, Zhou L, Shi X, Zhao C, Liu X, Mei S, Xu G. An exposome atlas of serum reveals the risk of chronic diseases in the Chinese population. Nat Commun 2024; 15:2268. [PMID: 38480749 PMCID: PMC10937660 DOI: 10.1038/s41467-024-46595-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 03/04/2024] [Indexed: 03/17/2024] Open
Abstract
Although adverse environmental exposures are considered a major cause of chronic diseases, current studies provide limited information on real-world chemical exposures and related risks. For this study, we collected serum samples from 5696 healthy people and patients, including those with 12 chronic diseases, in China and completed serum biomonitoring including 267 chemicals via gas and liquid chromatography-tandem mass spectrometry. Seventy-four highly frequently detected exposures were used for exposure characterization and risk analysis. The results show that region is the most critical factor influencing human exposure levels, followed by age. Organochlorine pesticides and perfluoroalkyl substances are associated with multiple chronic diseases, and some of them exceed safe ranges. Multi-exposure models reveal significant risk effects of exposure on hyperlipidemia, metabolic syndrome and hyperuricemia. Overall, this study provides a comprehensive human serum exposome atlas and disease risk information, which can guide subsequent in-depth cause-and-effect studies between environmental exposures and human health.
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Affiliation(s)
- Lei You
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Liaoning Province Key Laboratory of Metabolomics, Dalian, 116023, China
| | - Jing Kou
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, # 13 Hangkong Road, Wuhan, Hubei, 430030, China
| | - Mengdie Wang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
- Liaoning Province Key Laboratory of Metabolomics, Dalian, 116023, China
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenbei New District, Shenyang, 110122, China
| | - Guoqin Ji
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
- Liaoning Province Key Laboratory of Metabolomics, Dalian, 116023, China
- School of Life Science, China Medical University, No. 77 Puhe Road, Shenbei New District, Shenyang, 110122, China
| | - Xiang Li
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, # 13 Hangkong Road, Wuhan, Hubei, 430030, China
| | - Chang Su
- National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
| | - Fujian Zheng
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Liaoning Province Key Laboratory of Metabolomics, Dalian, 116023, China
| | - Mingye Zhang
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, # 13 Hangkong Road, Wuhan, Hubei, 430030, China
| | - Yuting Wang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Liaoning Province Key Laboratory of Metabolomics, Dalian, 116023, China
| | - Tiantian Chen
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Liaoning Province Key Laboratory of Metabolomics, Dalian, 116023, China
| | - Ting Li
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Liaoning Province Key Laboratory of Metabolomics, Dalian, 116023, China
| | - Lina Zhou
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Liaoning Province Key Laboratory of Metabolomics, Dalian, 116023, China
| | - Xianzhe Shi
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Liaoning Province Key Laboratory of Metabolomics, Dalian, 116023, China
| | - Chunxia Zhao
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Liaoning Province Key Laboratory of Metabolomics, Dalian, 116023, China
| | - Xinyu Liu
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Liaoning Province Key Laboratory of Metabolomics, Dalian, 116023, China.
| | - Surong Mei
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, # 13 Hangkong Road, Wuhan, Hubei, 430030, China.
| | - Guowang Xu
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Liaoning Province Key Laboratory of Metabolomics, Dalian, 116023, China.
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7
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Surma M, Sznajder-Katarzyńska K, Wiczkowski W, Piskuła M, Zieliński H. Detection of Per- and Polyfluoroalkyl Substances in High-Protein Food Products. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2023; 42:2589-2598. [PMID: 37671839 DOI: 10.1002/etc.5743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/29/2023] [Accepted: 08/30/2023] [Indexed: 09/07/2023]
Abstract
Per- and polyfluoroalkyl substances (PFAS) belong to the emerging class of persistent organohalogenated contaminants in the environment. We determined the levels of 10 PFAS in selected samples representing different food types, with a special focus on those rich in protein such as fish, meat and meat preparations, liver, eggs, and leguminous vegetables. Such determinations were based on the Quick Easy Cheap Effective Rugged Safe extraction procedure followed by micro-high-performance liquid chromatography-tandem mass spectrometry. The most frequently found was perfluorooctanoic acid, in 84% of the food samples. However, its maximum measured concentration was 0.50 ng g-1 , in a herring sample. The highest concentrations were for perfluorobutanoic acid (35 ng g-1 measured in a pork liver sample) and perfluorooctane sulfonate (12 ng g-1 measured in a herring sample). Because these compounds may bioaccumulate in human tissues by dietary intake, further research into their impact on human health is called for. Environ Toxicol Chem 2023;42:2589-2598. © 2023 SETAC.
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Affiliation(s)
- Magdalena Surma
- Malopolska Centre of Food Monitoring, Faculty of Food Technology, University of Agriculture in Krakow, Krakow, Poland
| | | | - Wiesław Wiczkowski
- Department of Chemistry and Biodynamics of Food, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland
| | - Mariusz Piskuła
- Department of Chemistry and Biodynamics of Food, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland
| | - Henryk Zieliński
- Department of Chemistry and Biodynamics of Food, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland
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8
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Berthold TA, McCrary A, deVilleneuve S, Schramm M. Let's talk about PFAS: Inconsistent public awareness about PFAS and its sources in the United States. PLoS One 2023; 18:e0294134. [PMID: 37971973 PMCID: PMC10653490 DOI: 10.1371/journal.pone.0294134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 10/26/2023] [Indexed: 11/19/2023] Open
Abstract
The presence of per- and polyfluoroalkyl substances (PFAS) in U.S. drinking water has recently garnered significant attention from the media, federal government, and public health professionals. While concerns for PFAS exposure continue to mount, the general public's awareness and knowledge of the contaminant has remained unknown. This exploratory study sought to fill this data gap by administering a nationwide survey in which the awareness of PFAS and community contamination, awareness of PFAS containing products and intentions to change product use, and awareness and concern about PFAS in drinking water were assessed. The results indicated that almost half the respondents had never heard of PFAS and do not know what it is (45.1%). Additionally, 31.6% responded that they had heard of PFAS but do not know what it is. A large portion of respondents (97.4%) also responded that they did not believe their drinking water had been impacted by PFAS. Demographic association did not influence knowledge of PFAS or levels of concern with PFAS in drinking water. The strongest predictor of PFAS awareness was awareness due to known community exposure. The respondents aware of community exposure were more likely to have knowledge of PFAS sources, change their use of items with potential PFAS contamination, and answer that their drinking water sources were also contaminated with PFAS. Based on the received responses, PFAS information and health risks need to be better communicated to the public to help increase awareness. These efforts should also be coordinated between government agencies, utilities, the research community, and other responsible entities to bolster their effectiveness.
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Affiliation(s)
- T. Allen Berthold
- Texas Water Resources Institute, Texas A&M AgriLife, College Station, Texas, United States of America
| | - Audrey McCrary
- Texas Water Resources Institute, Texas A&M AgriLife, College Station, Texas, United States of America
| | - Stephanie deVilleneuve
- Texas Water Resources Institute, Texas A&M AgriLife, College Station, Texas, United States of America
| | - Michael Schramm
- Texas Water Resources Institute, Texas A&M AgriLife, College Station, Texas, United States of America
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9
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Cioni L, Plassmann M, Benskin JP, Coêlho ACM, Nøst TH, Rylander C, Nikiforov V, Sandanger TM, Herzke D. Fluorine Mass Balance, including Total Fluorine, Extractable Organic Fluorine, Oxidizable Precursors, and Target Per- and Polyfluoroalkyl Substances, in Pooled Human Serum from the Tromsø Population in 1986, 2007, and 2015. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:14849-14860. [PMID: 37747946 PMCID: PMC10569050 DOI: 10.1021/acs.est.3c03655] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 09/09/2023] [Accepted: 09/11/2023] [Indexed: 09/27/2023]
Abstract
Of the thousands of per- and polyfluoroalkyl substances (PFAS) known to exist, only a small fraction (≤1%) are commonly monitored in humans. This discrepancy has led to concerns that human exposure may be underestimated. Here, we address this problem by applying a comprehensive fluorine mass balance (FMB) approach, including total fluorine (TF), extractable organic fluorine (EOF), total oxidizable precursors (TOP), and selected target PFAS, to human serum samples collected over a period of 28 years (1986, 2007, and 2015) in Tromsø, Norway. While concentrations of TF did not change between sampling years, EOF was significantly higher in 1986 compared to 2007 and 2015. The ∑12PFAS concentrations were highest in 2007 compared to 1986 and 2015, and unidentified EOF (UEOF) decreased from 1986 (46%) to 2007 (10%) and then increased in 2015 (37%). While TF and EOF were not influenced by sex, women had higher UEOF compared to men, opposite to target PFAS. This is the first FMB in human serum to include TOP, and it suggests that precursors with >4 perfluorinated carbon atoms make a minor contribution to EOF (0-4%). Additional tools are therefore needed to identify substances contributing to the UEOF in human serum.
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Affiliation(s)
- Lara Cioni
- NILU,
Fram Centre, Tromsø NO-9296, Norway
- Department
of Community Medicine, UiT − The
Arctic University of Norway, Tromsø NO-9037, Norway
| | - Merle Plassmann
- Department
of Environmental Science, Stockholm University, Stockholm SE-106 91, Sweden
| | - Jonathan P. Benskin
- Department
of Environmental Science, Stockholm University, Stockholm SE-106 91, Sweden
| | | | - Therese H. Nøst
- Department
of Community Medicine, UiT − The
Arctic University of Norway, Tromsø NO-9037, Norway
| | - Charlotta Rylander
- Department
of Community Medicine, UiT − The
Arctic University of Norway, Tromsø NO-9037, Norway
| | | | - Torkjel M. Sandanger
- NILU,
Fram Centre, Tromsø NO-9296, Norway
- Department
of Community Medicine, UiT − The
Arctic University of Norway, Tromsø NO-9037, Norway
| | - Dorte Herzke
- NILU,
Fram Centre, Tromsø NO-9296, Norway
- Norwegian
Institute for public Health, Oslo NO-0213, Norway
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10
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Surma M, Sawicki T, Piskuła M, Wiczkowski W. Relationship between the Consumption of Fermented Red Beetroot Juice and Levels of Perfluoroalkyl Substances in the Human Body's Fluids and Blood Parameters. Int J Mol Sci 2023; 24:13956. [PMID: 37762257 PMCID: PMC10530276 DOI: 10.3390/ijms241813956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 08/30/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
Per- and polyfluoroalkyl substances (PFASs) are a group of fluorinated, organic, man-made chemicals; they do not occur naturally in the environment. This study aimed to determine the profile and content of PFASs in the volunteers' blood plasma and urine after the consumption of fermented red beetroot juice and then correlated it with the blood parameters. Over 42 days, 24 healthy volunteers ingested 200 mL/60 kg of body weight of fermented red beetroot juice. PFASs were analyzed using the micro-HPLC-MS/MS method. Five perfluoroalkyl substances were found in the volunteers' body fluids. After consuming the juice, it was discovered that regarding the perfluorocarboxylic acids, a downward trend was observed, while regarding the perfluoroalkane sulfonates, and their plasma content showed a statistically significant upward trend. Analysis of the hematology parameters indicated that the intake of fermented red beetroot juice showed a significant decrease in mean corpuscular volume (MCV), platelets concentration, mean platelet volume (MPV), platelet large cell ratio (P-LCR) at the significance level p < 0.01, and hematocrit (p < 0.05). On the other hand, the dietary intervention also indicated a significant (p < 0.01) increase in corpuscular/cellular hemoglobin concentration (MCHC). In the case of blood biochemistry, no significant change was observed in the blood samples after the intake of the fermented beetroot juice. However, a decreasing tendency of total cholesterol and low-density lipoprotein concentration (LDL-C) was observed. Based on the presented results, there is a need to analyze and monitor health-promoting food regarding undesirable substances and their impact on consumer health.
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Affiliation(s)
- Magdalena Surma
- Malopolska Centre of Food Monitoring, Faculty of Food Technology, University of Agriculture in Krakow, 122 Balicka St., 30-149 Krakow, Poland
| | - Tomasz Sawicki
- Department of Human Nutrition, Faculty of Food Sciences, University of Warmia and Mazury in Olsztyn, Słoneczna 45F St., 10-719 Olsztyn, Poland
| | - Mariusz Piskuła
- Institute of Animal Reproduction and Food Research, Polish Academy of Science, Tuwima 10 St., 10-748 Olsztyn, Poland
| | - Wiesław Wiczkowski
- Institute of Animal Reproduction and Food Research, Polish Academy of Science, Tuwima 10 St., 10-748 Olsztyn, Poland
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11
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Rong H, Qin J, He L, Tong M. Cotransport of different electrically charged microplastics with PFOA in saturated porous media. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 331:121862. [PMID: 37220863 DOI: 10.1016/j.envpol.2023.121862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/01/2023] [Accepted: 05/20/2023] [Indexed: 05/25/2023]
Abstract
The fate and transport behavior of microplastics (MPs), emerging colloidal contaminant ubiquitous in natural environments, would be greatly affected by other copresent pollutants. PFOA (emerging surfactant pollutant) would interact with MPs after encounter with them in natural environments, which could alter the transport behavior of both pollutants. Relevant knowledge is still lacking, affecting accurate prediction the fate and distribution of these two emerging contaminants in natural porous media. The cotransport behavior of different surface charged MPs (negatively/positively charged, CMPs/AMPs) with PFOA (three concentrations ranged from 0.1 to 10 mg/L) in porous media in both 10 and 50 mM NaCl solutions thus was investigated in the present study. We found PFOA inhibited CMPs transport in porous media, while enhanced AMPs transport. The mechanisms leading to the altered transport of CMPs/AMPs caused by PFOA were found to be different. The decreased electrostatic repulsion between CMPs-sand induced by the decreased CMPs negative zeta potentials via the adsorption of PFOA led to the inhibited transport of CMPs in CMPs-PFOA suspension. The enhanced electrostatic repulsion between AMPs-sand due to the decreased positive charge of AMPs via the adsorption of PFOA together with steric repulsion induced by suspended PFOA resulted in the increased transport of AMPs in AMPs-PFOA suspension. Meanwhile, we found that the adsorption onto MPs surfaces also impacted the transport of PFOA. Due to the lower mobility of MPs than PFOA, the presence of MPs despite their surface charge decreased the transport of PFOA of all examined concentrations in quartz sand columns. This study demonstrates that when MPs and PFOA are co-existing in environments, their interaction with each other will alter the fate and transport behavior of both pollutants in porous media and the alteration is highly correlated with the amount of PFOA adsorbed onto MPs and original surface properties of MPs.
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Affiliation(s)
- Haifeng Rong
- State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, PR China
| | - Jianmei Qin
- State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, PR China
| | - Lei He
- State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, PR China
| | - Meiping Tong
- State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, PR China.
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12
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Liu D, Yan S, Wang P, Chen Q, Liu Y, Cui J, Liang Y, Ren S, Gao Y. Perfluorooctanoic acid (PFOA) exposure in relation to the kidneys: A review of current available literature. Front Physiol 2023; 14:1103141. [PMID: 36776978 PMCID: PMC9909492 DOI: 10.3389/fphys.2023.1103141] [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: 11/20/2022] [Accepted: 01/16/2023] [Indexed: 01/27/2023] Open
Abstract
Perfluorooctanoic acid is an artificial and non-degradable chemical. It is widely used due to its stable nature. It can enter the human body through food, drinking water, inhalation of household dust and contact with products containing perfluorooctanoic acid. It accumulates in the human body, causing potential harmful effects on human health. Based on the biodegradability and bioaccumulation of perfluorooctanoic acid in the human body, there are increasing concerns about the adverse effects of perfluorooctanoic acid exposure on kidneys. Research shows that kidney is the main accumulation organ of Perfluorooctanoic acid, and Perfluorooctanoic acid can cause nephrotoxicity and produce adverse effects on kidney function, but the exact mechanism is still unknown. In this review, we summarize the relationship between Perfluorooctanoic acid exposure and kidney health, evaluate risks more clearly, and provide a theoretical basis for subsequent research.
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Affiliation(s)
- Dongge Liu
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, Changchun, China
| | - Shuqi Yan
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, Changchun, China
| | - Pingwei Wang
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, Changchun, China
| | - Qianqian Chen
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, Changchun, China
| | - Yanping Liu
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, Changchun, China
| | - Jiajing Cui
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, Changchun, China
| | - Yujun Liang
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, Changchun, China
| | - Shuping Ren
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, Changchun, China
| | - Ying Gao
- Department of Endocrinology, The First Hospital of Jilin University, Changchun, China,*Correspondence: Ying Gao,
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13
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Jain RB, Ducatman A. Serum concentrations of selected perfluoroalkyl substances for US females compared to males as they age. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 842:156891. [PMID: 35753482 DOI: 10.1016/j.scitotenv.2022.156891] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 06/16/2022] [Accepted: 06/18/2022] [Indexed: 01/09/2023]
Affiliation(s)
- Ram B Jain
- Independent Researcher, Loganville, GA, USA.
| | - Alan Ducatman
- West Virginia University School of Public Health, Morgantown, WV, USA
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14
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Qu J, Zhao Y, Zhang L, Hu S, Liao K, Zhao M, Wu P, Jin H. Evaluated serum perfluoroalkyl acids and their relationships with the incidence of rheumatoid arthritis in the general population in Hangzhou, China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 307:119505. [PMID: 35605832 DOI: 10.1016/j.envpol.2022.119505] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 05/15/2022] [Accepted: 05/16/2022] [Indexed: 06/15/2023]
Abstract
Perfluoroalkyl acids (PFAAs) are widely present in human blood, and have many toxic effects on humans. However, effects of PFAA exposure on the risk of rheumatic immune diseases are limited. In the present study, occurrence of 7 PFAAs, including perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA), perfluorononanoate (PFNA), perfluorodecanoate (PFDA), perfluoroundecanoate (PFUnA), perfluorododecanoate (PFDoA), and perfluorotrdecanoate (PFTrA), were measured in serum samples from 156 healthy people (controls) and 156 rheumatoid arthritis (RA) cases living in Hangzhou, China. We also investigated the relationships among cumulative PFAA levels in serum, some immune markers, and the incidence of RA. The results showed that PFOA (6.1 and 11.8 ng/mL) had the highest mean serum concentrations, followed by PFOS (3.2 and 3.4 ng/mL) and PFDA (0.86 and 2.6 ng/mL), in both controls and RA cases. Cumulative exposure to PFOA in the study population were positively correlated with the levels of rheumatoid factors (rs = 0.69, p < 0.01) and anti-cyclic citrullinated peptide antibody (rs = 0.56, p < 0.05). Moreover, significant associations of PFOA concentrations with odds ratios (OR) of RA (OR = 1.998, confidence interval (CI): 1.623, 2.361, p = 0.01) were found by adjusting for various covariates. The crude and adjusted OR for RA was respective 1.385 (95% CI: 1.270, 1.510, p = 0.04) and 1.381 (95% CI: 0.972, 1.658, p = 0.06) for a unit increase in serum PFOS levels, but the adjusted results were not significant. Overall, this case-control study found that human serum PFOA concentrations were positively correlated with RF and ACPA levels.
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Affiliation(s)
- Jianli Qu
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, PR China
| | - Yun Zhao
- Department of Rheumatology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, PR China
| | - Li Zhang
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, PR China
| | - Shilei Hu
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, PR China
| | - Kaizhen Liao
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, PR China
| | - Meirong Zhao
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, PR China
| | - Pengfei Wu
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong SAR, PR China
| | - Hangbiao Jin
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, PR China.
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15
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Liang L, Pan Y, Bin L, Liu Y, Huang W, Li R, Lai KP. Immunotoxicity mechanisms of perfluorinated compounds PFOA and PFOS. CHEMOSPHERE 2022; 291:132892. [PMID: 34780734 DOI: 10.1016/j.chemosphere.2021.132892] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/09/2021] [Accepted: 11/11/2021] [Indexed: 05/14/2023]
Abstract
Perfluorinated and polyfluorinated compounds (PFASs) are a class of synthetic chemical substances that are widely used in human production and life, such as fire-fighting foams, textiles and clothing, surfactants, and surface protective agents. Perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) are the most abundant and common perfluorinated compounds in biota and humans. Currently, PFOA and PFOS have been listed in the Stockholm Convention on Persistent Organic Pollutants, and their production has been halted in many countries. However, because the high-energy carbon-fluorine bond can make it resistant to hydrolysis, photolysis, microbial degradation, and vertebrate metabolism, PFOA and PFOS show environmental persistence and bioaccumulation and hence, are of great concern to humans and wildlife. PFOA and PFOS have toxic effects on the immune system of the body. This article reviewed the effects of PFOA and PFOS on immune organs such as the spleen, bone marrow, and thymus of mice and zebrafish, and the effects on non-specific immune functions such as the skin barrier, intestinal mucosal barrier, and humoral immunity. We also reviewed the influence of specific immune functions based on cellular immunity, and further summarized the possible immune toxicity mechanisms such as AIM2 inflammasome activation, gene dysregulation, and signal pathway disorders caused by PFOA and PFOS. The aim of this review was to provide a reference for further understanding of the immunotoxicity and the responsible mechanism of PFOA and PFOS.
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Affiliation(s)
- Luyun Liang
- School of Lingui Clinical Medicine, Guilin Medical University, Guilin, PR China; Laboratory of Environmental Pollution and Integrative Omics, Guilin Medical University, Guilin, PR China
| | - Yongling Pan
- School of Lingui Clinical Medicine, Guilin Medical University, Guilin, PR China; Laboratory of Environmental Pollution and Integrative Omics, Guilin Medical University, Guilin, PR China
| | - Lihua Bin
- School of Lingui Clinical Medicine, Guilin Medical University, Guilin, PR China; Laboratory of Environmental Pollution and Integrative Omics, Guilin Medical University, Guilin, PR China
| | - Yu Liu
- School of Lingui Clinical Medicine, Guilin Medical University, Guilin, PR China; Laboratory of Environmental Pollution and Integrative Omics, Guilin Medical University, Guilin, PR China
| | - Wenjun Huang
- Laboratory of Environmental Pollution and Integrative Omics, Guilin Medical University, Guilin, PR China
| | - Rong Li
- Laboratory of Environmental Pollution and Integrative Omics, Guilin Medical University, Guilin, PR China.
| | - Keng Po Lai
- Laboratory of Environmental Pollution and Integrative Omics, Guilin Medical University, Guilin, PR China.
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16
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Cao L, Guo Y, Chen Y, Hong J, Wu J, Hangbiao J. Per-/polyfluoroalkyl substance concentrations in human serum and their associations with liver cancer. CHEMOSPHERE 2022; 296:134083. [PMID: 35216980 DOI: 10.1016/j.chemosphere.2022.134083] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/13/2022] [Accepted: 02/20/2022] [Indexed: 02/05/2023]
Abstract
Per-/polyfluoroalkyl substances (PFASs) are widespread in global human blood, and have some toxic effects on liver. However, effects of PFAS exposure on human liver cancer (LC) risk are still not known. In this study, 203 LC patients and 203 controls were recruited, and their serum samples were collected between 2019 and 2021. We determined the residues of 12 PFASs in serum from all participants and quantified their association with LC incidence and tumor markers. PFOS (9.8 ng/mL) had the highest mean concentration in human serum, followed by PFOA (8.3 ng/mL) and 6:2 Cl-PFESA (3.9 ng/mL). We found that concentrations of PFOS and 6:2 Cl-PFESA in human serum were significantly correlated with the levels of alpha fetoprotein (AFP) (βPFOS = 0.13, 95% confidence interval (CIPFOS): 0.088, 0.17; β6:2 Cl-PFESA = 0.070, CI6:2 Cl-PFESA: 0.036, 0.10). A positive association of PFOS and 6:2 Cl-PFESA with odds ratios (OR) of LC (ORPFOS = 0.609, CIPFOS: 1.179, 4.029, P = 0.001; OR6:2 Cl-PFESA = 1.844, CI6:2 Cl-PFESA: 1.176, 2.512, P = 0.02) were found, after adjusting for different covariates. Moreover, serum PFOA concentrations were associated with carcinoembryonic antigen (CEA), but their correlation with the LC incidence was not statistically significant. This new finding supports the evidence for the positive associations among PFAS exposure, change of specific tumor marker, and LC risks.
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Affiliation(s)
- Linping Cao
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, PR China; Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, PR China
| | - Yu Guo
- Focused Photonics (Hangzhou) Inc., Hangzhou, Zhejiang, 311000, PR China
| | - Yuanchen Chen
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, PR China
| | - Jiawei Hong
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, PR China; Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, PR China
| | - Jian Wu
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, PR China; Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, PR China.
| | - Jin Hangbiao
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, PR China.
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17
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Rickard BP, Rizvi I, Fenton SE. Per- and poly-fluoroalkyl substances (PFAS) and female reproductive outcomes: PFAS elimination, endocrine-mediated effects, and disease. Toxicology 2022; 465:153031. [PMID: 34774661 PMCID: PMC8743032 DOI: 10.1016/j.tox.2021.153031] [Citation(s) in RCA: 82] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 09/29/2021] [Accepted: 11/08/2021] [Indexed: 01/17/2023]
Abstract
Per- and poly-fluoroalkyl substances (PFAS) are widespread environmental contaminants frequently detected in drinking water supplies worldwide that have been linked to a variety of adverse reproductive health outcomes in women. Compared to men, reproductive health effects in women are generally understudied while global trends in female reproduction rates are declining. Many factors may contribute to the observed decline in female reproduction, one of which is environmental contaminant exposure. PFAS have been used in home, food storage, personal care and industrial products for decades. Despite the phase-out of some legacy PFAS due to their environmental persistence and adverse health effects, alternative, short-chain and legacy PFAS mixtures will continue to pollute water and air and adversely influence women's health. Studies have shown that both long- and short-chain PFAS disrupt normal reproductive function in women through altering hormone secretion, menstrual cyclicity, and fertility. Here, we summarize the role of a variety of PFAS and PFAS mixtures in female reproductive tract dysfunction and disease. Since these chemicals may affect reproductive tissues directly or indirectly through endocrine disruption, the role of PFAS in breast, thyroid, and hypothalamic-pituitary-gonadal axis function are also discussed as the interplay between these tissues may be critical in understanding the long-term reproductive health effects of PFAS in women. A major research gap is the need for mechanism of action data - the targets for PFAS in the female reproductive and endocrine systems are not evident, but the effects are many. Given the global decline in female fecundity and the ability of PFAS to negatively impact female reproductive health, further studies are needed to examine effects on endocrine target tissues involved in the onset of reproductive disorders of women.
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Affiliation(s)
- Brittany P Rickard
- Curriculum in Toxicology & Environmental Medicine, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, NC, North Carolina State University, Raleigh, NC 27599, USA
| | - Imran Rizvi
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, NC, North Carolina State University, Raleigh, NC 27599, USA; Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Suzanne E Fenton
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, 111 TW Alexander Dr., Rm E121A, Research Triangle Park, NC 27709, USA.
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Qiu X, Li J, Gu J, Xie R, Yan X, Qi D. Novel self-cross-linking fluorinated polyacrylate latex films with short chain perfluoroalkyl group: Surface free energy and surface reorganization. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105185] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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19
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Androulakakis A, Alygizakis N, Gkotsis G, Nika MC, Nikolopoulou V, Bizani E, Chadwick E, Cincinelli A, Claßen D, Danielsson S, Dekker RWRJ, Duke G, Glowacka N, Jansman HAH, Krone O, Martellini T, Movalli P, Persson S, Roos A, O'Rourke E, Siebert U, Treu G, van den Brink NW, Walker LA, Deaville R, Slobodnik J, Thomaidis NS. Determination of 56 per- and polyfluoroalkyl substances in top predators and their prey from Northern Europe by LC-MS/MS. CHEMOSPHERE 2022; 287:131775. [PMID: 34509025 DOI: 10.1016/j.chemosphere.2021.131775] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 07/28/2021] [Accepted: 08/01/2021] [Indexed: 05/26/2023]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are a group of emerging substances that have proved to be persistent and highly bioaccumulative. They are broadly used in various applications and are known for their long-distance migration and toxicity. In this study, 65 recent specimens of a terrestrial apex predator (Common buzzard), freshwater and marine apex predators (Eurasian otter, harbour porpoise, grey seal, harbour seal) and their potential prey (bream, roach, herring, eelpout) from northern Europe (United Kingdom, Germany, the Netherlands and Sweden) were analyzed for the presence of legacy and emerging PFAS, employing a highly sensitive liquid chromatography electrospray ionization tandem mass spectrometry (LC-ESI-MS/MS) method. 56 compounds from 14 classes were measured; 13 perfluoroalkyl carboxylic acids (PFCAs), 7 perfluoroalkyl sulphonic acids (PFSAs), 3 perfluorooctane sulfonamides (FOSAs), 4 perfluoroalkylphosphonic acids (PFAPAs), 3 perfluoroalkylphosphinic acids (PFPi's), 5 telomer alcohols (FTOHs), 2 mono-substituted polyfluorinated phosphate esters (PAPs), 2 di-substituted polyfluorinated phosphate esters (diPAPs), 6 saturated fluorotelomer acids (FTAS), 3 unsaturated fluorotelomer acids (FTUAs), 2 N-Alkyl perfluorooctane sulfonamidoethanols (FOSEs), 3 fluorotelomer sulphonic acids (FTSAs), 2 perfluoroether carboxylic acids (PFECAs) and 1 chlorinated perfluoroether sulphonic acid (Cl-PFESA). All samples were lyophilized before analysis, in order to enhance extraction efficiency, improve the precision and achieve lower detection limits. The analytes were extracted from the dry matrices through generic methods of extraction, using an accelerated solvent extraction (ASE), followed by clean-up through solid phase extraction (SPE). Method detection limits and method quantification limits ranged from 0.02 to 1.25 ng/g wet weight (ww) and from 0.05 to 3.79 ng/g (ww), respectively. Recovery ranged from 40 to 137%. Method precision ranged from 3 to 20 %RSD. The sum of PFAS concentration in apex predators livers ranged from 0.2 to 20.2 μg/g (ww), whereas in the fish species muscle tissues it ranged from 16 to 325 ng/g (ww). All analyzed specimens were primarily contaminated with PFOS, while the three PFPi's included in this study exhibited frequency of appearance (FoA) 100 %. C9 to C13 PFCAs were found at high concentrations in apex predator livers, while the overall PFAS levels in fish fillets also exceeded ecotoxicological thresholds. The findings of our study show a clear association between the PFAS concentrations in apex predators and the geographical origin of the specimens, with samples that were collected in urban and agricultural zones being highly contaminated compared to samples from pristine or semi-pristine areas. The high variety of PFAS and the different PFAS composition in the apex predators and their prey (AP&P) samples is alarming and strengthens the importance of PFAS monitoring across the food chain.
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Affiliation(s)
- Andreas Androulakakis
- National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771, Athens, Greece
| | - Nikiforos Alygizakis
- National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771, Athens, Greece; Environmental Institute, Okružná 784/42, 97241, Koš, Slovak Republic
| | - Georgios Gkotsis
- National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771, Athens, Greece
| | - Maria-Christina Nika
- National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771, Athens, Greece
| | - Varvara Nikolopoulou
- National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771, Athens, Greece
| | - Erasmia Bizani
- National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771, Athens, Greece
| | - Elizabeth Chadwick
- Cardiff University, Biomedical Science Building, Museum Avenue, Cardiff, CF10 3AX, UK
| | - Alessandra Cincinelli
- Department of Chemistry "Ugo Schiff", University of Florence, 50019, Sesto Fiorentino, Italy
| | | | - Sara Danielsson
- Naturhistoriska riksmuseet, Box 50007, 104 05, Stockholm, Sweden
| | | | - Guy Duke
- Environmental Change Institute, University of Oxford, 3 South Parks Rd, Oxford, OX1 3QY, United Kingdom
| | - Natalia Glowacka
- Environmental Institute, Okružná 784/42, 97241, Koš, Slovak Republic
| | - Hugh A H Jansman
- Wageningen Environmental Research, 6700 AA, Wageningen, the Netherlands
| | - Oliver Krone
- Leibniz Institute for Zoo and Wildlife Research, Department of Wildlife Diseases, Alfred-Kowalke-Strasse 17, 10315, Berlin, Germany
| | - Tania Martellini
- Department of Chemistry "Ugo Schiff", University of Florence, 50019, Sesto Fiorentino, Italy
| | - Paola Movalli
- Naturalis Biodiversity Center, 2333 RA, Leiden, the Netherlands
| | - Sara Persson
- Naturhistoriska riksmuseet, Box 50007, 104 05, Stockholm, Sweden
| | - Anna Roos
- Naturhistoriska riksmuseet, Box 50007, 104 05, Stockholm, Sweden
| | - Emily O'Rourke
- Cardiff University, Biomedical Science Building, Museum Avenue, Cardiff, CF10 3AX, UK
| | - Ursula Siebert
- Institute for Terrestrial and Aquatic Wildlife Research, University of Veterinary Medicine Hannover, 25761, Buesum, Germany
| | | | - Nico W van den Brink
- Division of Toxicology, Wageningen University, 6700EA Wageningen, The Netherlands
| | | | - Rob Deaville
- Institute of Zoology, Zoological Society of London, Regent's Park, London NW1 4RY, UK
| | | | - Nikolaos S Thomaidis
- National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771, Athens, Greece.
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20
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Lin PID, Cardenas A, Hauser R, Gold DR, Kleinman KP, Hivert MF, Calafat AM, Webster TF, Horton ES, Oken E. Temporal trends of concentrations of per- and polyfluoroalkyl substances among adults with overweight and obesity in the United States: Results from the Diabetes Prevention Program and NHANES. ENVIRONMENT INTERNATIONAL 2021; 157:106789. [PMID: 34333293 PMCID: PMC8490287 DOI: 10.1016/j.envint.2021.106789] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 07/13/2021] [Accepted: 07/19/2021] [Indexed: 05/19/2023]
Abstract
BACKGROUND Understanding the temporal trends and change of concentrations of per- and polyfluoroalkyl substances (PFAS) is important to evaluate the health impact of PFAS at both the individual- and population-level, however, limited information is available for pre-diabetic adults in the U.S. OBJECTIVES Determine trends and rate of change of plasma PFAS concentrations in overweight or obese U.S. adults and evaluate variation by sex, race/ethnicity, and age. METHODS We described temporal trends of plasma PFAS concentrations using samples collected in 1996-1998, 1999-2001, and 2011-2012 from 957 pre-diabetic adults enrolled in the Diabetes Prevention Program (DPP) trial and Outcomes Study (DPPOS) and compared to serum concentrations from the National Health and Nutrition Examination Survey (NHANES 1999-2000, 2003-2016, adults with BMI ≥ 24 kg/m2). We examined associations between participants' characteristics and PFAS concentrations and estimated the rate of change using repeated measures in DPP/DPPOS assuming a first-order elimination model. RESULTS Longitudinal measures of PFAS concentrations in DPP/DPPOS individuals were comparable to NHANES cross-sectional populational means. Plasma concentrations of perfluorooctanesulfonic acid (PFOS), perfluorooctanoic acid, perfluorohexanesulfonic acid (PFHxS), N-ethyl-perfluorooctane sulfonamido acetic acid (EtFOSAA), and N-methylperfluorooctane sulfonamido acetic acid (MeFOSAA) started to decline after the year 2000 and concentrations of perfluorononanoic acid (PFNA) increased after 2000 and, for NHANES, decreased after 2012. We consistently observed higher PFOS, PFHxS and PFNA among male, compared to female, and higher PFOS and PFNA among Black, compared to white, participants. The estimated time for concentrations to decrease by half ranged from 3.39 years for EtFOSAA to 17.56 years for PFHxS. DISCUSSION We observed a downward temporal trend in plasma PFOS concentrations that was consistent with the timing for U.S. manufacturers' phaseout. Male and Black participants consistently showed higher PFOS and PFNA than female and white participants, likely due to differences in exposure patterns, metabolism or elimination kinetics.
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Affiliation(s)
- Pi-I D Lin
- Division of Chronic Disease Research Across the Lifecourse, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA.
| | - Andres Cardenas
- Division of Environmental Health Sciences, School of Public Health and Center for Computational Biology, University of California, Berkeley, Berkeley, CA, USA.
| | - Russ Hauser
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
| | - Diane R Gold
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA.
| | - Ken P Kleinman
- Department of Biostatistics, School of Public Health and Human Sciences, University of Massachusetts Amherst, Amherst, MA, USA
| | - Marie-France Hivert
- Division of Chronic Disease Research Across the Lifecourse, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA; Diabetes Unit, Massachusetts General Hospital, Boston, MA, USA.
| | - Antonia M Calafat
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| | - Thomas F Webster
- Department of Environmental Health, Boston University School of Public Health, Boston, MA, USA.
| | - Edward S Horton
- Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA.
| | - Emily Oken
- Division of Chronic Disease Research Across the Lifecourse, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA.
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21
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Makowska K, Martín J, Rychlik A, Aparicio I, Santos JL, Alonso E, Gonkowski S. Assessment of exposure to perfluoroalkyl substances (PFASs) in dogs by fur analysis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 286:117435. [PMID: 34052650 DOI: 10.1016/j.envpol.2021.117435] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 05/17/2021] [Accepted: 05/18/2021] [Indexed: 06/12/2023]
Abstract
Poly- and perfluoroalkyl substances (PFASs) are a large group of chemicals commonly used in various branches of industry, which may adversely affect the living organisms. The aim of this study were to evaluate exposure of dogs to six selected PFASs: five perfluoroalkyl carboxylic acids (perfluorobutanoic acid - PFBuA, perfluoropentanoic acid - PFPeA, perfluorohexanoic acid - PFHxA, perfluoroheptanoic acid - PFHpA, perfluorooctanoic acid - PFOA) and perfluorooctane sulfonic acid (PFOS) through the analysis of fur samples. To our knowledge this is the first study concerning the use of fur samples to evaluation of exposure of domestic animals to PFASs. Relationship between PFASs concentration and age, gender and body weight of animals was also evaluated. Fur samples were collected from 30 dogs living in Olsztyn (Poland). All PFASs studied were detected in the canine fur samples. The highest concentrations were observed in the case of PFOA and PFBuA, detected at concentrations in the range between 1.51 and 66.7 ng/g and 0.98-26.6 ng/g, respectively. During the present study generally no statistically significant differences dependent on gender, age and body weight of animals were found. This study confirms the suitability of fur samples for biomonitoring of exposure to PFASs in domestic animals, what may be important in veterinary toxicology.
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Affiliation(s)
- Krystyna Makowska
- Department of Clinical Diagnostics, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 14, 10-957, Olsztyn, Poland.
| | - Julia Martín
- Department of Analytical Chemistry, University of Seville, C/ Virgen de África, 7, E-41011, Sevilla, Spain
| | - Andrzej Rychlik
- Department of Clinical Diagnostics, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 14, 10-957, Olsztyn, Poland
| | - Irene Aparicio
- Department of Analytical Chemistry, University of Seville, C/ Virgen de África, 7, E-41011, Sevilla, Spain
| | - Juan Luis Santos
- Department of Analytical Chemistry, University of Seville, C/ Virgen de África, 7, E-41011, Sevilla, Spain
| | - Esteban Alonso
- Department of Analytical Chemistry, University of Seville, C/ Virgen de África, 7, E-41011, Sevilla, Spain
| | - Slawomir Gonkowski
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-957, Olsztyn, Poland
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22
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Norén E, Lindh C, Glynn A, Rylander L, Pineda D, Nielsen C. Temporal trends, 2000-2017, of perfluoroalkyl acid (PFAA) concentrations in serum of Swedish adolescents. ENVIRONMENT INTERNATIONAL 2021; 155:106716. [PMID: 34144476 DOI: 10.1016/j.envint.2021.106716] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 06/10/2021] [Accepted: 06/10/2021] [Indexed: 05/28/2023]
Abstract
Per- and polyfluoroalkyl substances (PFAS) have been extensively used as surfactants because of their high stability and good water/oil-repellent properties. PFASs, especially perfluoroalkyl acids (PFAAs), have long biological half-lives, and exposure may cause adverse health effects in humans. We assessed temporal trends of concentrations of eight PFAAs in serum of Swedish adolescents (age 16-21 years) from the general population, and estimated the stability of PFAAs and serum samples after 6 years of storage. Repeated cross-sectional sampling was performed on five occasions (covering in total 1213 individuals, 83% males) in southern Sweden between 2000 and 2017. We analyzed serum for perfluorohexane sulfonic acid (PFHxS), perfluorooctane sulfonic acid (PFOS), perfluoroheptanoic acid (PFHpA), perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), perfluorodecanoic acid (PFDA), perfluoroundecanoic acid (PFUnDA), and perfluorododecanoic acid (PFDoDA) using liquid chromatography-tandem mass spectrometry. We assessed time trends using linear regression, long-term stability was assessed by reanalyzing samples collected 2013, and the comparison was done using Pearson correlation and Bland-Altman plots. PFHxS, PFOS, and PFOA decreased by 6.7% (CI: -7.0, -6.3%), 12.6% (CI: -12.9, -12.3%), and 6.5% (CI: -6.8, -6.1%) per year, respectively, and year of sampling explained 48-81% of the variation in concentrations. PFNA and PFDA seemed to increase up to 2009 and decrease thereafter. The trends were consistent after sensitivity analyses excluding women. Strong correlations of 94-97% were observed for concentrations of all compounds, except PFHxS, after storage. The observed trends closely followed the timing of manufacturers' voluntary phase-out initiatives, and of regulatory measures governing the compounds implemented in the EU and USA. This indicates that these actions mitigated the population's exposure to PFHxS, PFOS, and PFOA and, in recent years, to PFNA and PFDA, in southern Sweden. Furthermore, the results suggest that PFAAs remain stable in serum samples after long-term storage.
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Affiliation(s)
- Erika Norén
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden.
| | - Christian Lindh
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Anders Glynn
- Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Lars Rylander
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Daniela Pineda
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Christel Nielsen
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
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23
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Berg V, Sandanger TM, Hanssen L, Rylander C, Nøst TH. Time trends of perfluoroalkyl substances in blood in 30-year old Norwegian men and women in the period 1986-2007. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:43897-43907. [PMID: 33840033 PMCID: PMC8357677 DOI: 10.1007/s11356-021-13809-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 03/31/2021] [Indexed: 06/12/2023]
Abstract
Biomonitoring studies are helpful tools and can increase our knowledge on time trends in human blood concentrations of PFASs: how they relate to emission trends and the potential prenatal exposure for future generations. In this study, serum was sampled in cross-sections of men and women who were 30 years old in each of the years 1986, 1994, 2001, and 2007 in Northern Norway and analyzed for 23 PFASs. Differences in serum concentrations across sampling years were investigated graphically and with significance testing and compared with those observed in our previous longitudinal study using repeated individual measurements in older men in the same years. The results demonstrate overall increasing blood burdens of PFASs in men and women in reproductively active ages during 1986-2001 and decreases until 2007. However, longer chained PFASs were still increasing in 2007 indicating divergent time trends between the different PFASs, underlining the importance of continued biomonitoring. Comparisons between 30-year-old men and older men within the same population demonstrated variation in time trends in the exact same years, underlining that biomonitoring studies must regard historic exposures and birth cohort effects.
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Affiliation(s)
- Vivian Berg
- Department of Medical Biology, Faculty of Health Sciences, UiT-The Arctic University of Norway, Post Box 6050, NO-9037 Tromsø, Norway
| | - Torkjel Manning Sandanger
- Department of Community Medicine, Faculty of Health Sciences, UiT-The Arctic University of Norway, Tromsø, Norway
- NILU, FRAM - High North Research Centre on Climate and the Environment, Tromsø, Norway
| | - Linda Hanssen
- NILU, FRAM - High North Research Centre on Climate and the Environment, Tromsø, Norway
| | - Charlotta Rylander
- Department of Community Medicine, Faculty of Health Sciences, UiT-The Arctic University of Norway, Tromsø, Norway
| | - Therese Haugdahl Nøst
- Department of Community Medicine, Faculty of Health Sciences, UiT-The Arctic University of Norway, Tromsø, Norway
- NILU, FRAM - High North Research Centre on Climate and the Environment, Tromsø, Norway
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24
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Göckener B, Weber T, Rüdel H, Bücking M, Kolossa-Gehring M. Human biomonitoring of per- and polyfluoroalkyl substances in German blood plasma samples from 1982 to 2019. ENVIRONMENT INTERNATIONAL 2020; 145:106123. [PMID: 32949877 DOI: 10.1016/j.envint.2020.106123] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/04/2020] [Accepted: 09/06/2020] [Indexed: 05/20/2023]
Abstract
The findings of per- and polyfluoroalkyl substances (PFAS) in humans and the environment all over the world have raised concerns and public awareness for this group of man-made chemicals. In the last three decades, this led to different regulatory restrictions for specific PFAS as well as shifts in the production and usage of these substances. In this study, we analyzed the PFAS levels of 100 human blood plasma samples collected from 2009 to 2019 for the German Environmental Specimen Bank (ESB) to further elucidate the time course of exposure towards this substance group as shown by Schröter-Kermani et al., (2013) with samples from 1982 to 2010. A spectrum of 37 PFAS, including perfluorocarboxylic (PFCA) and -sulfonic acids (PFSA) as well as potential precursors and substitutes like ADONA, GenX or F-53B was analyzed by UHPLC coupled with high-resolution mass spectrometry. Validation was successful for 33 of the substances. The two legacy substances perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) were detected in every sample of the 2009-2019 dataset and showed the highest concentrations with ranges of 0.27-14.0 ng/mL and 1.21-14.1 ng/mL, respectively. A significant portion of total PFOS analytes was present as branched isomers (mean: 34 ± 7%). High detection frequencies of 95% and 82% were also found for perfluorohexane sulfonic acid (PFHxS) and perfluorononanoic acid (PFNA), respectively, but in lower concentrations (PFHxS: <LOQ - 4.62 ng/mL; PFNA: <LOQ - 3.66 ng/mL) than PFOA and PFOS. Besides other PFCA and PFSA only 8:2 fluorotelomer sulfonic acid (8:2 FtS) and N-methyl perfluorooctane sulfonamidoacetic acid were detected in very few samples. In combination with the previous results from 1982 to 2010, declining temporal trends were observed for all PFAS (PFOA, PFNA, PFHxS, and PFOS) frequently detected in the ESB samples. The results of this study indicate a decrease in human exposure to known PFAS in Germany over the last three decades and emphasize the importance of long-term human biomonitoring studies for investigating the effects of chemical regulation.
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Affiliation(s)
- Bernd Göckener
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Auf dem Aberg 1, 57392 Schmallenberg, Germany.
| | - Till Weber
- German Environment Agency (Umweltbundesamt), Corrensplatz 1, 14195 Berlin, Germany
| | - Heinz Rüdel
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Auf dem Aberg 1, 57392 Schmallenberg, Germany
| | - Mark Bücking
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Auf dem Aberg 1, 57392 Schmallenberg, Germany; Monash University, School of Chemistry, 13 Rainforest Walk, Clayton, Victoria 3800, Australia
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25
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Pirard C, Dufour P, Charlier C. Background contamination of perfluoralkyl substances in a Belgian general population. Toxicol Lett 2020; 333:13-21. [PMID: 32659468 DOI: 10.1016/j.toxlet.2020.07.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 07/02/2020] [Accepted: 07/09/2020] [Indexed: 10/23/2022]
Abstract
The few Belgian studies on the human exposure to perfluoroalkyl substances (PFASs) have until now concerned the Northern part of Belgium (Flanders), while data related to Wallonia (South region) are missing. To fill this gap, 8 perfluorinated carboxylic acids and 3 perfluorinated alkyl sulfonates were measured in the serum of 242 adults (>18 years old) recruited in 2015 and living in the Province of Liege. Some multivariate regression models were also built with the PFAS levels and the participant's answers to a questionnaire about their diet and lifestyle habits in order to identify some predictors of exposure. The results obtained showed that although PFAS levels observed in our population seemed to be similar or lower than those reported in other countries, and especially lower than in the Northern part of Belgium, half of the population showed PFOS and PFOA serum levels above the health guidance values set by the German HBM Commission. As expected, age and gender were the main covariates explaining the different PFAS serum levels between participants, while breastfeeding (for women), consumption of fish and seafood, consumption of rice, and use of nail polish seemed also to impact the PFAS body burden of our population. Nevertheless, the statistical models were poorly predictive suggesting that the main sources of exposure were not taken into account.
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Affiliation(s)
- Catherine Pirard
- Laboratory of Clinical, Forensic and Environmental Toxicology, CHU of Liege, B35, 4000, Liege, Belgium.
| | - Patrice Dufour
- Laboratory of Clinical, Forensic and Environmental Toxicology, CHU of Liege, B35, 4000, Liege, Belgium
| | - Corinne Charlier
- Laboratory of Clinical, Forensic and Environmental Toxicology, CHU of Liege, B35, 4000, Liege, Belgium
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26
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Ingelido AM, Abballe A, Gemma S, Dellatte E, Iacovella N, De Angelis G, Marra V, Russo F, Vazzoler M, Testai E, De Felip E. Serum concentrations of perfluorinated alkyl substances in farmers living in areas affected by water contamination in the Veneto Region (Northern Italy). ENVIRONMENT INTERNATIONAL 2020; 136:105435. [PMID: 31935559 DOI: 10.1016/j.envint.2019.105435] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 12/03/2019] [Accepted: 12/19/2019] [Indexed: 06/10/2023]
Abstract
Human exposure to per- and polyfluorinated alkyl substances (PFASs) is a major public health concern because in the last decades several cases of overexposure of people to PFASs, in particular through contaminated water, occurred worldwide. In 2013-2017 a PFAS drinking water contamination was discovered and investigated in northern Italy (Veneto region) and high PFAS serum levels were detected in exposed people. 629 subjects were enrolled: 257 residing in municipalities in the areas under impact, 250 residing in municipalities in areas at presumed background exposure and 122 farmers living in contaminated rural areas producing and consuming own livestock and vegetables and frequently using well water. The highest PFAS serum concentrations (median PFOA concentrations 40 ng/g) were found in the subgroup of farmers. The main factors influencing PFAS serum levels of farmers were residence area and the related extent of drinking water contamination, gender, years of residence in the municipalities, well water consumption and consumption of own produced food. PFOA serum concentrations in farmers residing in the areas of the Veneto region impacted by PFAS contamination are among the highest found worldwide.
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Affiliation(s)
- Anna Maria Ingelido
- Istituto Superiore di Sanità, Dipartimento Ambiente e Salute, Viale Regina Elena 299, 00161 Roma, Italy.
| | - Annalisa Abballe
- Istituto Superiore di Sanità, Dipartimento Ambiente e Salute, Viale Regina Elena 299, 00161 Roma, Italy
| | - Simonetta Gemma
- Istituto Superiore di Sanità, Dipartimento Ambiente e Salute, Viale Regina Elena 299, 00161 Roma, Italy
| | - Elena Dellatte
- Istituto Superiore di Sanità, Dipartimento Ambiente e Salute, Viale Regina Elena 299, 00161 Roma, Italy
| | - Nicola Iacovella
- Istituto Superiore di Sanità, Dipartimento Ambiente e Salute, Viale Regina Elena 299, 00161 Roma, Italy
| | - Giovanna De Angelis
- Istituto Superiore di Sanità, Dipartimento Ambiente e Salute, Viale Regina Elena 299, 00161 Roma, Italy
| | - Valentina Marra
- Istituto Superiore di Sanità, Dipartimento Ambiente e Salute, Viale Regina Elena 299, 00161 Roma, Italy
| | - Francesca Russo
- Direzione Prevenzione, Sicurezza Alimentare e Veterinaria della Regione Veneto, Rio Novo - Dorsoduro 3493, 30123 Venezia, Italy
| | - Marina Vazzoler
- Agenzia Regionale per la Prevenzione e Protezione Ambientale del Veneto, Via Ospedale Civile 24, 35121 Padova, Italy
| | - Emanuela Testai
- Istituto Superiore di Sanità, Dipartimento Ambiente e Salute, Viale Regina Elena 299, 00161 Roma, Italy
| | - Elena De Felip
- Istituto Superiore di Sanità, Dipartimento Ambiente e Salute, Viale Regina Elena 299, 00161 Roma, Italy
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27
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Barton KE, Starling AP, Higgins CP, McDonough CA, Calafat AM, Adgate JL. Sociodemographic and behavioral determinants of serum concentrations of per- and polyfluoroalkyl substances in a community highly exposed to aqueous film-forming foam contaminants in drinking water. Int J Hyg Environ Health 2020; 223:256-266. [PMID: 31444118 PMCID: PMC6878185 DOI: 10.1016/j.ijheh.2019.07.012] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 07/24/2019] [Accepted: 07/24/2019] [Indexed: 01/09/2023]
Abstract
BACKGROUND Per- and polyfluoroalkyl substances (PFAS) are a chemical class widely used in industrial and commercial applications because of their unique physical and chemical properties. Between 2013 and 2016 PFAS were detected in public water systems and private wells in El Paso County, Colorado. The contamination was likely due to aqueous film forming foams used at a nearby Air Force base. OBJECTIVE To cross-sectionally describe the serum concentrations of PFAS in a highly exposed community, estimate associations with drinking water source, and explore potential demographic and behavioral predictors. METHODS In June 2018, serum PFAS concentrations were quantified and questionnaires administered in 213 non-smoking adult (ages 19-93) participants residing in three affected water districts. Twenty PFAS were quantified and those detected in >50% of participants were analyzed: perfluorohexane sulfonate (PFHxS), perfluorooctane sulfonate (PFOS), perfluorooctanoate (PFOA), perfluorononanoate (PFNA) and perfluoroheptane sulfonate (PFHpS). Unadjusted associations were estimated between serum PFAS concentrations and several predictors, including water consumption, demographics, personal behaviors and employment. A multiple linear regression model estimated adjusted associations with smoking history. RESULTS Study participants' median PFHxS serum concentration (14.8 ng/mL) was approximately 12 times as high as the U.S. national average. Median serum concentrations for PFOS, PFOA, PFNA and PFHpS were 9.7 ng/mL, 3.0 ng/mL, 0.4 ng/mL and 0.2 ng/mL, respectively. Determinants of PFHxS serum concentrations were water district of residence, frequency of bottled water consumption, age, race/ethnicity, and smoking history. Determinants of serum concentrations for the other four PFAS evaluated included: water district of residence, bottled water consumption, age, sex, race/ethnicity, smoking history, and firefighter or military employment. CONCLUSIONS Determinants of serum concentrations for multiple PFAS, including PFHxS, included water district of residence and frequency of bottled water consumption. Participants' dominant PFAS exposure route was likely consumption of PFAS-contaminated water, but certain demographic and behavioral characteristics also predicted serum concentrations.
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Affiliation(s)
- Kelsey E Barton
- Department of Environmental and Occupational Health, Colorado School of Public Health, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Anne P Starling
- Department of Environmental and Occupational Health, Colorado School of Public Health, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA; Department of Epidemiology, Colorado School of Public Health, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Christopher P Higgins
- Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO, USA
| | - Carrie A McDonough
- Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO, USA
| | - Antonia M Calafat
- Centers for Disease Control and Prevention, National Center for Environmental Health, Atlanta, GA, USA
| | - John L Adgate
- Department of Environmental and Occupational Health, Colorado School of Public Health, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA.
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Ramli MR, Yoneda M, Ali Mohd M, Mohamad Haron DE, Ahmad ED. Level and determinants of serum perfluoroalkyl acids (PFAAs) in a population in Klang Valley, Malaysia. Int J Hyg Environ Health 2019; 223:179-186. [PMID: 31542349 DOI: 10.1016/j.ijheh.2019.09.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 08/15/2019] [Accepted: 09/11/2019] [Indexed: 01/09/2023]
Abstract
For decades, perfluoroalkyl acids (PFAAs) have been commonly used for industrial and commercial purposes due to their water- and stain-resistant properties. Persistent pollutants that contain PFAAs have been associated with adverse health effects in humans, and many studies have documented dietary intake, indoor air inhalation, and dermal contact as the potential routes for human exposure to PFAAs. The aim of this study was to assess the level of PFAAs in the serum samples of a general population in a specific region in Malaysia. Using 219 serum samples collected from residents of Klang Valley, Malaysia, the levels of nine PFAAs were analyzed using liquid chromatography-tandem mass spectrometry. In addition, questionnaire surveys on the dietary habits and lifestyles of the subjects were conducted. The results showed that PFAA concentrations of up to 32.57 ng/mL were detected in all serum samples. In 82.6% of the participants, at least seven PFAAs were detected in the serum samples, with perfluorooctanesulfonic acid being the predominant PFAA (median = 8.79 ng/mL). In the adjusted regression model, the concentrations of most PFAAs were higher in men than in women and positively correlated with age, although body mass index and smoking were not significantly associated with the serum PFAA concentrations. Taking into consideration the lifestyle variables, significant associations were found between nonstick cookware and perfluorononanoic acid, between dental floss and cosmetics and perfluorodecanoic acid (PFDA), and between leather sofa and perfluoroundecanoic acid (PFUnDA). Besides, consumption of beef was significantly associated with increased levels of serum PFUnDA, whereas consumption of lamb and chicken eggs was negatively associated with the serum levels of PFUnDA and PFDA, respectively.
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Affiliation(s)
- Mohd Redzuan Ramli
- Environmental Risk Analysis, Department of Urban and Environmental Engineering, Kyoto University, KyotoDaigakuKatsura, Nishikyo-ku, Kyoto, 615-8540, Japan; Shimadzu-UM Centre for Xenobiotic Studies (SUCXeS), Department of Pathology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Minoru Yoneda
- Environmental Risk Analysis, Department of Urban and Environmental Engineering, Kyoto University, KyotoDaigakuKatsura, Nishikyo-ku, Kyoto, 615-8540, Japan
| | - Mustafa Ali Mohd
- Shimadzu-UM Centre for Xenobiotic Studies (SUCXeS), Department of Pathology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Didi Erwandi Mohamad Haron
- Shimadzu-UM Centre for Xenobiotic Studies (SUCXeS), Department of Pathology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Emmy Dayana Ahmad
- University of Malaya Bioequivalence and Testing Center (UBAT), Department of Pharmacology, University of Malaya, 50603, Kuala Lumpur, Malaysia
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Sznajder-Katarzyńska K, Surma M, Wiczkowski W, Cieślik E. The perfluoroalkyl substance (PFAS) contamination level in milk and milk products in Poland. Int Dairy J 2019. [DOI: 10.1016/j.idairyj.2019.04.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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A Review of Perfluoroalkyl Acids (PFAAs) in terms of Sources, Applications, Human Exposure, Dietary Intake, Toxicity, Legal Regulation, and Methods of Determination. J CHEM-NY 2019. [DOI: 10.1155/2019/2717528] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Per- and polyfluoroalkyl substances (PFASs) are widely distributed across the world and are expected to be of concern to human health and the environment. The review focuses on perfluoroalkyl acids (PFAAs) and, in particular, on the most frequently discussed perfluoroalkyl carboxylic acids (PFCAs) and perfluoroalkane sulfonic acids (PFSAs). In this study, some basic information concerning PFASs is reviewed, focusing mainly on PFAAs (perfluoroalkyl acids). We have made efforts to systemize their division into groups according to chemical structure, describe their basic physicochemical properties, characterize production technologies, and determine potential human exposure routes with particular reference to oral exposure. A variety of possible toxicological effects to human health are also discussed. In response to increasing public concern about the toxicity of PFAAs, an evaluation of dietary intake has been undertaken for two of the most commonly known PFAAs: perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS). As summarized in this study, PFAAs levels need further assessment due to the science-based TWI standards laid down by the EFSA’s CONTAM Panel regarding the risk to human health posed by the presence of perfluorooctane sulfonic acid and perfluorooctanoic acid in food (tolerable weekly intakes of PFOA and PFOS set up to 6 ng·kg−1·bw·week−1 and 13 ng·kg−1·bw·week−1, respectively). Current legislation, relevant legislation on PFAAs levels in food, and the most popular methods of analysis in food matrices are described.
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Mamsen LS, Björvang RD, Mucs D, Vinnars MT, Papadogiannakis N, Lindh CH, Andersen CY, Damdimopoulou P. Concentrations of perfluoroalkyl substances (PFASs) in human embryonic and fetal organs from first, second, and third trimester pregnancies. ENVIRONMENT INTERNATIONAL 2019; 124:482-492. [PMID: 30684806 DOI: 10.1016/j.envint.2019.01.010] [Citation(s) in RCA: 175] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 12/23/2018] [Accepted: 01/04/2019] [Indexed: 05/20/2023]
Abstract
BACKGROUND The persistent environmental contaminants perfluoroalkyl substances (PFASs) have gained attention due to their potential adverse health effects, in particular following early life exposure. Information on human fetal exposure to PFASs is currently limited to one report on first trimester samples. There is no data available on PFAS concentrations in fetal organs throughout all three trimesters of pregnancy. METHODS We measured the concentrations of perfluorooctanesulfonic acid (PFOS), perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), perfluorodecanoic acid (PFDA), perfluoroundecanoic acid (PFUnA), and perfluorohexane sulfonic acid (PFHxS) in human embryos and fetuses with corresponding placentas and maternal serum samples derived from elective pregnancy terminations and cases of intrauterine fetal death. A total of 78 embryos and fetuses aged 7-42 gestational weeks were included and a total of 225 fetal organs covering liver, lung, heart, central nervous system (CNS), and adipose tissue were analyzed, together with 71 placentas and 63 maternal serum samples. PFAS concentrations were assayed by liquid chromatography/triple quadrupole mass spectrometry. RESULTS All evaluated PFASs were detected and quantified in maternal sera, placentas and embryos/fetuses. In maternal serum samples, PFOS was detected in highest concentrations, followed by PFOA > PFNA > PFDA = PFUnA = PFHxS. Similarly, PFOS was detected in highest concentrations in embryo/fetal tissues, followed by PFOA > PFNA = PFDA = PFUnA. PFHxS was detected in very few fetuses. In general, PFAS concentrations in embryo/fetal tissue (ng/g) were lower than maternal serum (ng/ml) but similar to placenta concentrations. The total PFAS burden (i.e. the sum of all PFASs) was highest in lung tissue in first trimester samples and in liver in second and third trimester samples. The burden was lowest in CNS samples irrespective of fetal age. The placenta:maternal serum ratios of PFOS, PFOA and PFNA increased across gestation suggesting bioaccumulation in the placenta. Further, we observed that the ratios were higher in pregnancies with male fetuses compared to female fetuses. CONCLUSIONS Human fetuses were intrinsically exposed to a mixture of PFASs throughout gestation. The compounds were detected in all analyzed tissues, suggesting that PFASs reach and may affect many types of organs. Collectively, our results demonstrate that PFASs pass the placenta and deposit to embryo and fetal tissues, calling for risk assessment of gestational exposures.
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Affiliation(s)
- Linn Salto Mamsen
- Laboratory of Reproductive Biology, Section 5712, The Juliane Marie Centre for Women, Children and Reproduction, University Hospital of Copenhagen, University of Copenhagen, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark.
| | - Richelle D Björvang
- Division of Obstetrics and Gynaecology, Department of Clinical Science, Intervention and Technology, K57 Karolinska University Hospital, Karolinska Institutet, 141 86 Stockholm, Sweden; Swetox, Karolinska Institute, Unit of Toxicology Sciences, Forskargatan 20, 151 36 Södertälje, Sweden.
| | - Daniel Mucs
- Swetox, Karolinska Institute, Unit of Toxicology Sciences, Forskargatan 20, 151 36 Södertälje, Sweden; Unit of Work Environment Toxicology, Institute of Environmental Medicine, Box 210, Karolinska Institutet, 171 77 Stockholm, Sweden.
| | - Marie-Therese Vinnars
- Division of Obstetrics and Gynaecology, Department of Clinical Science, Intervention and Technology, K57 Karolinska University Hospital, Karolinska Institutet, 141 86 Stockholm, Sweden.
| | - Nikos Papadogiannakis
- Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge H5, 141 83 Stockholm, Sweden.
| | - Christian H Lindh
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Medicon Village, Byggnad 402 A, Lund University, 223 61 Lund, Sweden.
| | - Claus Yding Andersen
- Laboratory of Reproductive Biology, Section 5712, The Juliane Marie Centre for Women, Children and Reproduction, University Hospital of Copenhagen, University of Copenhagen, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark.
| | - Pauliina Damdimopoulou
- Division of Obstetrics and Gynaecology, Department of Clinical Science, Intervention and Technology, K57 Karolinska University Hospital, Karolinska Institutet, 141 86 Stockholm, Sweden; Swetox, Karolinska Institute, Unit of Toxicology Sciences, Forskargatan 20, 151 36 Södertälje, Sweden.
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Ma YG, Sohn EH, Choi J, Kim DW, Kim JS, Lee DS. Controllable Surface and Optical Properties of Methacrylic Copolymer Films Using Various Monomer Combinations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:11850-11856. [PMID: 30169043 DOI: 10.1021/acs.langmuir.8b02723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Various fluorinated methacrylic copolymers (PFPMA- X) were prepared from 2,2,3,3,3-pentafluoropropyl methacrylate (PFPMA), methyl methacrylate (MMA), and three other nonfluorinated monomers. The surface and the optical properties of these copolymers were controlled by changing the ratio of PFPMA to MMA while keeping the sum of the concentration of the two monomers fixed at 60 wt %. The parameter X represents the nominal concentration of PFPMA in various feed ratios of all five monomers. Depending on the increase in PFPMA content in PFPMA- X, the surface energy varied proportionately between 26.7 (PFPMA content: 20 wt %) and 17.4 mN/m (PFPMA content: 60 wt %), which is well-correlated with the fluorine content on the surface. Interestingly, we found that all PFPMA- X-coated glasses showed different transmittance curves in the wavelength range of 300-700 nm, and the wavelength at which maximum transmittance was recorded shifted as a function of the copolymer composition. In addition, the surface coatings of PFPMA- X with higher fluorine contents increased the transmittance of bare glass by approximately 1-2%. Quite lower and tunable refractive indices were obtained depending on the fluorine content, and all PFPMA- X showed extremely lower birefringences. Freestanding films of PFPMA- X were also well-formed, indicating that they can be used in a wide range of applications.
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Affiliation(s)
- Young Gil Ma
- Division of Semiconductors and Chemical Engineering , Chonbuk National University , Jeonju 54896 , Republic of Korea
- JEONGSEOK Chemical 192 , Wanjusandan 5-ro , Bongding-eup, Wanju-gun , Jeollabuk-do 55323 , Republic of Korea
| | - Eun-Ho Sohn
- Advanced Materials and Chemical Engineering , University of Science and Technology , Daejeon 34113 , Republic of Korea
- Center for Interface Materials and Chemical Engineering , Korea Research Institute of Chemical Technology , Daejeon 34113 , Republic of Korea
| | - Jaewon Choi
- JEONGSEOK Chemical 192 , Wanjusandan 5-ro , Bongding-eup, Wanju-gun , Jeollabuk-do 55323 , Republic of Korea
- Department of Carbon & Fusion Technology , Jeonju University , 303, Cheonjam-ro , Wansan-gu, Jeonju , Jeollabuk-do 55069 , Republic of Korea
| | - Dae Won Kim
- Division of Semiconductors and Chemical Engineering , Chonbuk National University , Jeonju 54896 , Republic of Korea
- JEONGSEOK Chemical 192 , Wanjusandan 5-ro , Bongding-eup, Wanju-gun , Jeollabuk-do 55323 , Republic of Korea
| | - Jong Seok Kim
- Division of Semiconductors and Chemical Engineering , Chonbuk National University , Jeonju 54896 , Republic of Korea
| | - Dai-Soo Lee
- Division of Semiconductors and Chemical Engineering , Chonbuk National University , Jeonju 54896 , Republic of Korea
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Zuo B, Li C, Li Y, Qian W, Ye X, Zhang L, Wang X. Toward Achieving Highly Ordered Fluorinated Surfaces of Spin-Coated Polymer Thin Films by Optimizing the Air/Liquid Interfacial Structure of the Casting Solutions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:3993-4003. [PMID: 29505264 DOI: 10.1021/acs.langmuir.8b00309] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Thin polymer films with well-assembled fluorinated groups on their surfaces are not easily achieved via spin-coating film-fabrication methods because the solution solidifies very rapidly during spin-coating, which hinders the fluorinated moieties from segregating and organizing on the film surface. In this contribution, we have proposed a comprehensive strategy toward achieving well-ordered fluorinated thin films surfaces by optimizing the molecular organization at air/liquid interface of the film-formation solutions. To validate such a route, poly(methyl methacrylate) (PMMA) end-capped with several 2-perfluorooctylethyl methacrylate (FMA) units was employed as the model polymer for investigations. The air/solution interfacial structures were optimized by systematically changing the polymer chain structures and properties of the casting solvents. It was found that the polymers that form loosely associated aggregates (e.g., FMA1- ec-PMMA65- ec-FMA1) and a solvent with better solubility to FMA while having not too low surface tension (i.e., toluene) can combine to produce solutions with well-assembled FMA at the interfaces. By spin-coating the solutions with well-organized interfaces, an ultrathin film with perfluorinated groups that were highly oriented toward the film surface was readily achieved, exhibiting surface energies as low as 7.2 mJ/m2, which is among the lowest reported so far for the spin-coated thin films, and a very high F/C ratio (i.e., 0.98).
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Affiliation(s)
- Biao Zuo
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of the Education Ministry , Zhejiang Sci-Tech University , Hangzhou 310018 , China
| | - Cheng Li
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of the Education Ministry , Zhejiang Sci-Tech University , Hangzhou 310018 , China
| | - Yawei Li
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of the Education Ministry , Zhejiang Sci-Tech University , Hangzhou 310018 , China
| | - Wenhao Qian
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of the Education Ministry , Zhejiang Sci-Tech University , Hangzhou 310018 , China
| | - Xiuyun Ye
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of the Education Ministry , Zhejiang Sci-Tech University , Hangzhou 310018 , China
| | - Li Zhang
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of the Education Ministry , Zhejiang Sci-Tech University , Hangzhou 310018 , China
| | - Xinping Wang
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of the Education Ministry , Zhejiang Sci-Tech University , Hangzhou 310018 , China
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Berntsen HF, Bølling AK, Bjørklund CG, Zimmer K, Ropstad E, Zienolddiny S, Becher R, Holme JA, Dirven H, Nygaard UC, Bodin J. Decreased macrophage phagocytic function due to xenobiotic exposures in vitro, difference in sensitivity between various macrophage models. Food Chem Toxicol 2018; 112:86-96. [DOI: 10.1016/j.fct.2017.12.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 08/24/2017] [Accepted: 12/15/2017] [Indexed: 12/11/2022]
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Bartolomé M, Gallego-Picó A, Cutanda F, Huetos O, Esteban M, Pérez-Gómez B, Castaño A. Perfluorinated alkyl substances in Spanish adults: Geographical distribution and determinants of exposure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017. [PMID: 28633112 DOI: 10.1016/j.scitotenv.2017.06.031] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are widely found in humans and the environment. Their persistence, bioaccumulation and toxicity make them a source of increasing public health concern. In this study, we analyzed the concentrations and geographical distribution of six PFAS in the serum of 755 Spanish adults aged 18-65. The geometric mean concentrations (and P95 values) for PFOS (perfluoroctane sulfonate), PFOA (perfluorooctanoic acid), PFHxS (perfluorohexane sulfonate), PFNA (perfluorononanoic acid) and PFDA (perfluorodecanoic acid) were 7.67 (19.3), 1.99 (5.48), 0.91 (2.84), 0.96 (2.44) and 0.42 (0.99) μg/L, respectively. N-Methylperfluorooctane sulfonamide (N-MeFOSAA) was detected in only 3.3% of samples. Residents in northeast (Catalonia) and northwest of Spain (Galicia) were found to have the highest serum values, whereas residents in the Canary Islands had the lowest values for almost all PFAS. Men presented higher levels than women, and we confirm that lactation (breastfeeding) contributes to a reduced body burden for all PFAS in women. Our data provide new information on exposure to PFAS in a national cross section sample of Spanish adults, thus providing a proxy for reference values for the Spanish population and forming the base for following temporal trends in the future.
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Affiliation(s)
- Mónica Bartolomé
- Environmental Toxicology, National Centre for Environmental Health, Instituto de Salud Carlos III, 28220 Majadahonda, Madrid, Spain
| | - Alejandrina Gallego-Picó
- Department of Analytical Sciences, Faculty of Sciences, National University of Distance Education (UNED), 28040 Madrid, Spain
| | - Francisco Cutanda
- Environmental Toxicology, National Centre for Environmental Health, Instituto de Salud Carlos III, 28220 Majadahonda, Madrid, Spain
| | - Olga Huetos
- Environmental Toxicology, National Centre for Environmental Health, Instituto de Salud Carlos III, 28220 Majadahonda, Madrid, Spain
| | - Marta Esteban
- Environmental Toxicology, National Centre for Environmental Health, Instituto de Salud Carlos III, 28220 Majadahonda, Madrid, Spain
| | - Beatriz Pérez-Gómez
- National Center for Epidemiology & CIBERESP, Instituto de Salud Carlos III, Sinesio Delgado, 6, Madrid, Spain
| | - Argelia Castaño
- Environmental Toxicology, National Centre for Environmental Health, Instituto de Salud Carlos III, 28220 Majadahonda, Madrid, Spain.
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Sammut G, Sinagra E, Helmus R, de Voogt P. Perfluoroalkyl substances in the Maltese environment - (I) surface water and rain water. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 589:182-190. [PMID: 28259432 DOI: 10.1016/j.scitotenv.2017.02.128] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 02/15/2017] [Accepted: 02/15/2017] [Indexed: 05/28/2023]
Abstract
The presence of perfluoroalkyl substances (PFASs) in rain water on the Maltese Islands is reported here for the first time and an extensive survey of these substances in surface water also reported. The Maltese archipelago lies at the centre of the Mediterranean Sea and consists of three main inhabited islands: Malta, Gozo and Comino. Surface water was collected from 41 valleys during the months of February and March 2015 at the peak of the wet season. Rain water was collected during the months of December 2014, February, August, September and October 2015. PFASs were extracted from the water samples using solid phase extraction and the extracts were then analysed using ultra performance liquid chromatography coupled to mass spectrometry in tandem (UPLC-MS/MS). All surface and rain water samples were contaminated with at least one PFAS. PFOS (<LOD - 8.6ng/L) and PFOA (ND - 16ng/L) were the two major PFASs being detected in 100% and 95% of the surface waters respectively. The ΣPFAS concentrations in rain water ranged between 0.38ng/L (1st October 2015) and 6ng/L (21st February 2015). The Maltese archipelago is surrounded by sea and disconnected from any other mainland; therefore the results confirm that remote environments can become contaminated by PFASs from rain events depending on wind prevailing trajectories.
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Affiliation(s)
- G Sammut
- Department of Chemistry, University of Malta, Malta
| | - E Sinagra
- Department of Chemistry, University of Malta, Malta.
| | - R Helmus
- IBED, University of Amsterdam, Amsterdam, Netherlands
| | - P de Voogt
- IBED, University of Amsterdam, Amsterdam, Netherlands; KWR, Watercycle Research Institute, Nieuwegein, Netherlands
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Kawabata K, Matsuzaki H, Nukui S, Okazaki M, Sakai A, Kawashima Y, Kudo N. Perfluorododecanoic Acid Induces Cognitive Deficit in Adult Rats. Toxicol Sci 2017; 157:421-428. [DOI: 10.1093/toxsci/kfx058] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Zhang YM, Dong XY, Fan LJ, Zhang ZL, Wang Q, Jiang N, Yang XS. Poly- and perfluorinated compounds activate human pregnane X receptor. Toxicology 2017; 380:23-29. [DOI: 10.1016/j.tox.2017.01.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 01/14/2017] [Accepted: 01/17/2017] [Indexed: 01/09/2023]
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Sohn EH, Ha JW, Lee SB, Park IJ. Tuning Surface Properties of Poly(methyl methacrylate) Film Using Poly(perfluoromethyl methacrylate)s with Short Perfluorinated Side Chains. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:9748-9756. [PMID: 27467854 DOI: 10.1021/acs.langmuir.6b01922] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
To control the surface properties of a commonly used polymer, poly(methyl methacrylate) (PMMA), poly(perfluoromethyl methacrylate)s (PFMMAs) with short perfluorinated side groups (i.e., -CF3, -CF2CF3, -(CF3)2, -CF2CF2CF3) were used as blend components because of their good solubility in organic solvents, low surface energies, and high optical transmittance. The surface energies of the blend films of PFMMA with the -CF3 group and PMMA increased continuously with increasing PMMA contents from 17.6 to 26.0 mN/m, whereas those of the other polymer blend films remained at very low levels (10.2-12.6 mN/m), similar to those of pure PFMMAs, even when the blends contained 90 wt %PMMA. Surface morphology and composition measurements revealed that this result originated from the different blend structures, such as lateral and vertical phase separations. We expect that these PFMMAs will be useful in widening the applicable window of PMMA.
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Affiliation(s)
- Eun-Ho Sohn
- Interface Material and Chemical Engineering Research Center, Korea Research Institute of Chemical Technology , Daejon 305-343, Republic of Korea
| | - Jong-Wook Ha
- Interface Material and Chemical Engineering Research Center, Korea Research Institute of Chemical Technology , Daejon 305-343, Republic of Korea
| | - Soo-Bok Lee
- Interface Material and Chemical Engineering Research Center, Korea Research Institute of Chemical Technology , Daejon 305-343, Republic of Korea
| | - In Jun Park
- Interface Material and Chemical Engineering Research Center, Korea Research Institute of Chemical Technology , Daejon 305-343, Republic of Korea
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Chropeňová M, Karásková P, Kallenborn R, Gregušková EK, Čupr P. Pine Needles for the Screening of Perfluorinated Alkylated Substances (PFASs) along Ski Tracks. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:9487-9496. [PMID: 27457263 DOI: 10.1021/acs.est.6b02264] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Perfluorinated alkylated substances (PFASs) are today considered persistent, toxic, and bioaccumulative contaminants. Perfluorooctansulfonate (PFOS) and perfluorooctanoic acid (PFOA) are currently listed as priority substances under the UNEP global convention for the regulation of POPs. A previous study reported higher levels of PFASs in pine needles near ski areas. Their application as stain repellents in modern outdoor clothes and in ski waxes is assumed to be a potential source. Pine trees (Pinus mugo in Slovakia and Pinus sylvestris in Norway) were chosen for sampling in ski resorts. Relative distributions, overall concentrations, trend estimates, elevation patterns, and distance from primary sources were assessed. PFOA was the predominant PFAS constituent in pine needles from Slovakia (8-93%). In Norway, the most-abundant PFAS was perfluorobutanoic acid (PFBA: 3-66%). A difference in product composition (particularly in ski waxes) and differences in Norwegian and Slovakian regulations are considered to be the primary reason for these differences. Open application of PFOA in industry and products has been banned in Norway since 2011. The replacement of PFOA with short-chain substitutes is thus considered the reason for the observed pattern differences in the analyzed pine needles. Regular monitoring and screening programs are recommended.
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Affiliation(s)
- Mária Chropeňová
- Research Centre for Toxic Compounds in the Environment (RECETOX), Masaryk University , Kamenice 753/5, Pavilion A29, 625 00 Brno, Czech Republic
| | - Pavlína Karásková
- Research Centre for Toxic Compounds in the Environment (RECETOX), Masaryk University , Kamenice 753/5, Pavilion A29, 625 00 Brno, Czech Republic
| | - Roland Kallenborn
- Department of Chemistry, Biotechnology and Food Science (IKBM), Norwegian University of Life Sciences (NMBU) , P.O. Box 5003, Christian M. Falsens veg 1, NO-1432 Ås, Norway
| | - Eva Klemmová Gregušková
- Research Centre for Toxic Compounds in the Environment (RECETOX), Masaryk University , Kamenice 753/5, Pavilion A29, 625 00 Brno, Czech Republic
| | - Pavel Čupr
- Research Centre for Toxic Compounds in the Environment (RECETOX), Masaryk University , Kamenice 753/5, Pavilion A29, 625 00 Brno, Czech Republic
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Bodin J, Groeng EC, Andreassen M, Dirven H, Nygaard UC. Exposure to perfluoroundecanoic acid (PFUnDA) accelerates insulitis development in a mouse model of type 1 diabetes. Toxicol Rep 2016; 3:664-672. [PMID: 28959590 PMCID: PMC5616085 DOI: 10.1016/j.toxrep.2016.08.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 08/26/2016] [Accepted: 08/26/2016] [Indexed: 02/06/2023] Open
Abstract
Perfluoralkylated substances (PFAS) are classified as persistent, bioaccumulative and toxic substances and are widespread environmental contaminants. Humans are exposed through food, drinking water and air. We have previously reported that bisphenol A accelerates spontaneous diabetes development in non-obese diabetic (NOD) mice and observed in the present study that perfluoroundecanoic acid, PFUnDA, increased insulitis development, a prerequisite for diabetes development in NOD mice. We exposed NOD mice to PFUnDA in drinking water (3, 30 and 300 μg/l) at mating, during gestation and lactation and until 30 weeks of age. After 300 μg/l PFUnDA exposure, we report (i) increased pancreatic insulitis, (ii) increased number of apoptotic cells in pancreatic islets prior to insulitis and (iii) decreased phagocytosis in peritoneal macrophages. There was also a trend of decreased number of tissue resident macrophages in pancreatic islets prior to insulitis after exposure to 300 μg/l, and altered cytokine secretion in activated splenocytes after exposure to 3 μg/l PFUnDA. Although insulitis is a prerequisite for autoimmune diabetes, the accelerated insulitis was not associated with accelerated diabetes development. Instead, the incidence of diabetes tended to be reduced in the animals exposed to 3 and 30 μg/l PFUnDA, suggesting a non-monotonic dose response. The effects of PFUnDA exposure on increased apoptosis in pancreas and reduced macrophage function as well as accelerated insulitis development in NOD mice, may also be relevant for human insulitis. Further observational autoimmune diabetes clinical cohort studies and animal experiments for PFUnDA as well as other PFASs are therefore encouraged.
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Affiliation(s)
- Johanna Bodin
- Department of Toxicology and Risk Assessment, Norwegian Institute of Public Health, Oslo, Norway
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Wang Y, Zhang H, Kang Y, Cao J. Effects of perfluorooctane sulfonate on the conformation and activity of bovine serum albumin. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 159:66-73. [DOI: 10.1016/j.jphotobiol.2016.03.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 03/15/2016] [Accepted: 03/15/2016] [Indexed: 10/22/2022]
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Jiang J, Zhang G, Wang Q, Zhang Q, Zhan X, Chen F. Novel Fluorinated Polymers Containing Short Perfluorobutyl Side Chains and Their Super Wetting Performance on Diverse Substrates. ACS APPLIED MATERIALS & INTERFACES 2016; 8:10513-10523. [PMID: 27052113 DOI: 10.1021/acsami.6b01102] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Because the emission of perfluorooctanoic acid (PFOA) was completely prohibited in 2015, the widely used poly- and perfluoroalkyl substances with long perfluoroalkyl groups must be substituted by environmentally friendly alternatives. In this study, one kind of potential alternative (i.e., fluorinated polymers with short perfluorobutyl side chains) has been synthesized from the prepared monomers {i.e., (perfluorobutyl)ethyl acrylate (C4A), (perfluorobutyl)ethyl methacrylate (C4MA), 2-[[[[2-(perfluorobutyl)]sulfonyl]methyl]amino]ethyl acrylate (C4SA), and methacrylate (C4SMA)}, and the microstructure, super wetting performance, and applications of the synthesized fluorinated polymers were systematically investigated. The thermal and crystallization behaviors of the fluoropolymer films were characterized by differential scanning calorimetry and wide-angle X-ray diffraction analysis, respectively. Dynamic water-repellent models were constructed. The stable low surface energy and dynamic water- and oil-repellent properties of these synthesized fluorinated polymers with short perfluorobutyl side chains were attributed to the synergetic effect of amorphous fluorinated side chains in perfluoroalkyl acrylate and crystalline hydrocarbon pendant groups in stearyl acrylate. Outstanding water- and oil-repellent properties of fabrics and any other substrates could be achieved by a facile dip-coating treatment using a fluorinated copolymer dispersion. As a result, we believe that our prepared fluorinated copolymers are potential candidates to replace the fluoroalkylated polymers with long perfluorinated chains in nonstick and self-cleaning applications in our daily life.
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Affiliation(s)
- Jingxian Jiang
- College of Chemical and Biological Engineering, Zhejiang University , Hangzhou 310027, P. R. China
| | - Guangfa Zhang
- College of Chemical and Biological Engineering, Zhejiang University , Hangzhou 310027, P. R. China
| | - Qiongyan Wang
- College of Chemical and Biological Engineering, Zhejiang University , Hangzhou 310027, P. R. China
- Research and Development Center, Zhejiang Sucon Silicone Co., Ltd. , Shaoxing 312088, P. R. China
| | - Qinghua Zhang
- College of Chemical and Biological Engineering, Zhejiang University , Hangzhou 310027, P. R. China
| | - Xiaoli Zhan
- College of Chemical and Biological Engineering, Zhejiang University , Hangzhou 310027, P. R. China
| | - Fengqiu Chen
- College of Chemical and Biological Engineering, Zhejiang University , Hangzhou 310027, P. R. China
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Wu D, Tong M, Kim H. Influence of Perfluorooctanoic Acid on the Transport and Deposition Behaviors of Bacteria in Quartz Sand. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:2381-2388. [PMID: 26866280 DOI: 10.1021/acs.est.5b05496] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The significance of perfluorooctanoic acid (PFOA) on the transport and deposition behaviors of bacteria (Gram-negative Escherichia coli and Gram-positive Bacillus subtilis) in quartz sand is examined in both NaCl and CaCl2 solutions at pH 5.6 by comparing both breakthrough curves and retained profiles with PFOA in solutions versus those without PFOA. All test conditions are found to be highly unfavorable for cell deposition regardless of the presence of PFOA; however, 7%-46% cell deposition is observed depending on the conditions. The cell deposition may be attributed to micro- or nanoscale roughness and/or to chemical heterogeneity of the sand surface. The results show that, under all examined conditions, PFOA in suspensions increases cell transport and decreases cell deposition in porous media regardless of cell type, presence or absence of extracellular polymeric substances, ionic strength, and ion valence. We find that the additional repulsion between bacteria and quartz sand caused by both acid-base interaction and steric repulsion as well as the competition for deposition sites on quartz sand surfaces by PFOA are responsible for the enhanced transport and decreased deposition of bacteria with PFOA in solutions.
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Affiliation(s)
- Dan Wu
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University , Beijing 100871, P. R. China
| | - Meiping Tong
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University , Beijing 100871, P. R. China
| | - Hyunjung Kim
- Department of Mineral Resources and Energy Engineering, Chonbuk National University , Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do 561-756, Republic of Korea
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Salgado R, López-Doval S, Pereiro N, Lafuente A. Perfluorooctane sulfonate (PFOS) exposure could modify the dopaminergic system in several limbic brain regions. Toxicol Lett 2016; 240:226-35. [DOI: 10.1016/j.toxlet.2015.10.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 10/22/2015] [Accepted: 10/26/2015] [Indexed: 01/01/2023]
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