51
|
Consonni D, Fustinoni S. Biochemical and haematological effects of serum PFOA, ADV and cC 6O 4 in workers of a chemical company producing fluoropolymers, Italy, 2013-2022. Int J Hyg Environ Health 2024; 262:114440. [PMID: 39106565 DOI: 10.1016/j.ijheh.2024.114440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 07/11/2024] [Accepted: 08/01/2024] [Indexed: 08/09/2024]
Abstract
INTRODUCTION Perfluoroalkyl and polyfluoroalkyl substances (PFAS) are widely used in the manufacture of fluoropolymers. We evaluated biochemical and haematological effects of three PFAS, serum perfluorooctanoic acid (PFOA), ADV, and cC6O4 in workers of a fluoropolymer company. METHODS Using data (2013-2022), we fitted random intercept regression models adjusted for several covariates and reciprocal adjustment between the three PFAS. RESULTS We analysed data of 814 workers (698 men, 116 women), 607 from the chemical plant, 207 from the research centre, for a total of 4912 blood samples (2065 with all three PFAS measured). Median levels of PFOA and ADV were 21.3 and 120 μg/L. Most (65.5%) cC6O4 measurements were below the limits of quantification (which varied over time from 5 to 0.1 μg/L). For PFOA, we observed positive associations with total cholesterol (+1.1% increase per ln(PFOA) increase) and apolipoprotein B (+1.4%) and negative associations with alkaline phosphatase (-1.5%); suggestive associations were also found with RBC (-0.4%), IgA (-1.5%), IgM (-1.4%). ADV was positively associated with total and LDL cholesterol (+1.0% and +1.6% per ln(ADV) increase), apolipoprotein B (+1.0%), GGT (+2.1%), IgM (+1.4%), and WBC (+1.5%) and negatively associated with direct bilirubin (-2.3%) and alpha-2-globulins (-0.7%); suggestive associations were found for indirect bilirubin (-2.0%), oestradiol (-2.1%), ad CRP (+6.0%). For samples with detectable cC6O4 levels we observed higher values of ALP (+2.3%), proteins (+0.5%), IgG (+0.7%) and platelets (+1.6%) and suggestively increased total bilirubin (+3.9%), RBC (+0.6%), and oestradiol (+5.8%). Some associations (total cholesterol, apolipoprotein B, WBC, total bilirubin, and alkaline phosphatase showed reverse time trends in parallel with the strong decrease of serum PFOA and ADV over the study period. DISCUSSION We found associations of serum PFOA and ADV with lipid metabolism, liver function, and immunoglobulins. The reverse time trends of some endpoints in parallel with decrease of serum PFOA and ADV reinforce causal interpretation of results. cC6O4 showed a different pattern of associations.
Collapse
Affiliation(s)
- Dario Consonni
- Epidemiology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - Silvia Fustinoni
- Toxicology Lab, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| |
Collapse
|
52
|
Sharma A, Jorvekar SB, Bhowmik S, Mohapatra P, Borkar RM. Comprehensive assessment of per and polyfluoroalkyl substances (PFAS) contamination in groundwater of Kamrup, Assam, India: occurrence, health risks, and metabolomic insights. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2024. [PMID: 39099548 DOI: 10.1039/d4em00159a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/06/2024]
Abstract
Per-and polyfluoroalkyl substances (PFAS) are synthetic chemicals that are known for their environmental persistence and adverse health effects. This study comprehensively assessed PFAS contamination in the Kamrup region of Assam, India, focusing on its presence in groundwater and associated health risks. The analysis detected 12 PFAS in groundwater samples from both the Kamrup Metro and Rural regions. In Kamrup Rural, Perfluorohexanoic acid (PFHxA), perfluorononanoic acid (PFNA), and perfluorooctanesulfonic acid (PFOS) were prevalent, whereas in Kamrup Metro, PFNA and PFOS were dominant, based on detection frequencies. These findings are noteworthy, as they demonstrate the widespread presence of PFAS in groundwater, a vital source of drinking water in the region. The assessment of PFAS health risks in India involved hazard quotient calculations for different age groups. Perfluorobutanesulfonic acid (PFBS) posed the highest risk, ranking children > boys > men > girls > women. Overall, ∑PFAS had low hazard (HQ: 0.27-0.41). Further, this study assessed PFBS and PFOS toxicity in human kidney epithelial cell lines (HEK293T) cells, revealing that PFBS was more cytotoxic than PFOS. The study examined the metabolomics of HEK293T cells after PFBS exposure, revealing significant alterations in lipid metabolism, particularly glycerophospholipids, potentially affecting cellular function and health. These findings underscore the importance of monitoring PFAS contamination in drinking water sources, especially in regions such as Kamrup, where groundwater is a primary source. Our metabolomics results show significant health effects at the cellular level, raising concerns about the impact of PFAS exposure on human health. This study highlights PFAS contamination in Kamrup, Assam's groundwater and its health risks, providing valuable insights for policymakers and public health management.
Collapse
Affiliation(s)
- Aditya Sharma
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, Changsari, 781101, India.
| | - Sachin B Jorvekar
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, Changsari, 781101, India.
| | - Sujoy Bhowmik
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, Changsari, 781101, India
| | - Purusottam Mohapatra
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, Changsari, 781101, India
| | - Roshan M Borkar
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, Changsari, 781101, India.
| |
Collapse
|
53
|
Garmo LC, Herroon MK, Mecca S, Wilson A, Allen DR, Agarwal M, Kim S, Petriello MC, Podgorski I. The long-chain polyfluorinated alkyl substance perfluorohexane sulfonate (PFHxS) promotes bone marrow adipogenesis. Toxicol Appl Pharmacol 2024; 491:117047. [PMID: 39111555 DOI: 10.1016/j.taap.2024.117047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 07/30/2024] [Accepted: 07/31/2024] [Indexed: 08/11/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) bioaccumulate in different organ systems, including bone. While existing research highlights the adverse impact of PFAS on bone density, a critical gap remains in understanding the specific effects on the bone marrow microenvironment, especially the bone marrow adipose tissue (BMAT). Changes in BMAT have been linked to various health consequences, such as the development of osteoporosis and the progression of metastatic tumors in bone. Studies presented herein demonstrate that exposure to a mixture of five environmentally relevant PFAS compounds promotes marrow adipogenesis in vitro and in vivo. We show that among the components of the mixture, PFHxS, an alternative to PFOS, has the highest propensity to accumulate in bone and effectively promote marrow adipogenesis. Utilizing RNAseq approaches, we identified the peroxisome proliferator-activated receptor (PPAR) signaling as a top pathway modulated by PFHxS exposure. Furthermore, we provide results suggesting the activation and involvement of PPAR-gamma (PPARγ) in PFHxS-mediated bone marrow adipogenesis, especially in combination with high-fat diet. In conclusion, our findings demonstrate the potential impact of elevated PFHxS levels, particularly in occupational settings, on bone health, and specifically bone marrow adiposity. This study contributes new insights into the health risks of PFHxS exposure, urging further research on the relationship between environmental factors, diet, and adipose tissue dynamics.
Collapse
Affiliation(s)
- Laimar C Garmo
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, United States of America
| | - Mackenzie K Herroon
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, United States of America
| | - Shane Mecca
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, United States of America
| | - Alexis Wilson
- Department of Oncology, Wayne State University School of Medicine and Karmanos Cancer Institute, Detroit, MI, United States of America
| | - David R Allen
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, United States of America
| | - Manisha Agarwal
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, United States of America
| | - Seongho Kim
- Department of Oncology, Wayne State University School of Medicine and Karmanos Cancer Institute, Detroit, MI, United States of America
| | - Michael C Petriello
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, United States of America; Institute of Environmental Health Sciences, Wayne State University, Detroit, MI, United States of America
| | - Izabela Podgorski
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, United States of America; Department of Oncology, Wayne State University School of Medicine and Karmanos Cancer Institute, Detroit, MI, United States of America.
| |
Collapse
|
54
|
Chang CJ, Ish JL, Chang VC, Daniel M, Jones RR, White AJ. Exposure to per- and polyfluoroalkyl substances and breast cancer risk: a systematic review and meta-analysis of epidemiologic studies. Am J Epidemiol 2024; 193:1182-1196. [PMID: 38400646 PMCID: PMC11299034 DOI: 10.1093/aje/kwae010] [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: 06/28/2023] [Revised: 02/01/2024] [Accepted: 02/20/2024] [Indexed: 02/25/2024] Open
Abstract
We synthesized the epidemiologic evidence on the associations between per- and polyfluoroalkyl substances (PFAS) exposure and breast cancer risk. Our systematic review and meta-analysis included 18 and 11 articles, respectively, covering studies up to February 2023. The summary relative risks (RRs) estimated by random-effects meta-analyses did not support an association between PFAS and overall breast cancer risk (eg, a natural log (ln)-unit increase in serum/plasma concentrations [ng/mL] for perfluorooctanoate [PFOA] RR = 0.95; 95% CI, 0.77-1.18; perfluorooctane sulfonate [PFOS] RR = 0.98; 95% CI, 0.87-1.11). However, when limiting to studies that assessed exposures prior to a breast cancer diagnosis, we observed a positive association with PFOA (a ln-unit increase, RR = 1.16; 95% CI, 0.96-1.40). We also observed some possible heterogeneous associations by tumor estrogen and progesterone receptor status among postmenopausal breast cancer cases. No meaningful changes were observed after excluding the studies with high risk of bias (Tier 3). Based on the evaluation tool developed by the National Toxicology Program, given the heterogeneity across studies and the variability in timing of exposure measurements, the epidemiologic evidence needed to determine the association between PFAS exposure and breast cancer remains inadequate. Our findings support the need for future studies with improved study designs to determine this association.
Collapse
Affiliation(s)
- Che-Jung Chang
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, United States
| | - Jennifer L Ish
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, United States
| | - Vicky C Chang
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD 20850, United States
| | - Meklit Daniel
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, United States
| | - Rena R Jones
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD 20850, United States
| | - Alexandra J White
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, United States
| |
Collapse
|
55
|
Taibl KR, Dunlop AL, Smith MR, Walker DI, Ryan PB, Panuwet P, Corwin EJ, Kannan K, Jones DP, Marsit CJ, Tan Y, Liang D, Eick SM, Barr DB. Association of per- and polyfluoroalkyl substances with the antioxidant bilirubin across pregnancy. Free Radic Biol Med 2024; 223:184-192. [PMID: 39097204 DOI: 10.1016/j.freeradbiomed.2024.07.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 07/24/2024] [Accepted: 07/30/2024] [Indexed: 08/05/2024]
Abstract
BACKGROUND In mechanistic and preliminary human studies, prenatal exposure to per- and polyfluoroalkyl substances (PFAS) is associated with oxidative stress, a potential contributor to maternal liver disease. Bilirubin is an endogenous antioxidant abundant in the liver that may serve as a physiological modulator of oxidative stress in pregnant people. Hence, our objective was to estimate the association between repeated measures of PFAS and bilirubin during pregnancy. METHODS The study population included 332 participants in the Atlanta African American Maternal-Child Cohort between 2014 and 2020. Serum samples were collected up to two times (early pregnancy: 6-18 gestational weeks; late pregnancy: 21-36 gestational weeks) for the measurement of perfluorohexane sulfonate (PFHxS), perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), and total bilirubin. We analyzed single PFAS with linear mixed effect regression and a mixture of the four PFAS with quantile g-computation. Models were repeated with a multiplicative interaction term to explore effect modification by study visit. RESULTS Overall, PFHxS was positively associated with bilirubin (β = 0.08, 95 % CI = 0.01, 0.15). We also found during late pregnancy, there was a positive association of PFHxS and the PFAS mixture with bilirubin (β = 0.12, 95 % CI = 0.02, 0.22; ψ = 0.19, 95 % CI = 0.03, 0.34, respectively). Finally, study visit modified the PFOA-bilirubin association (interaction p-value = 0.09), which was greater during early pregnancy (β = 0.08, 95 % CI = 0.01, 0.15). CONCLUSION In a prospective cohort of pregnant African Americans, an increase in PFOA, PFHxS, and the PFAS mixture was associated with an increase in bilirubin. Our results suggest that, depending on pregnancy stage, prenatal PFAS exposure disrupts the maternal liver antioxidant capacity.
Collapse
Affiliation(s)
- Kaitlin R Taibl
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Anne L Dunlop
- Department of Gynecology and Obstetrics, School of Medicine, Emory University, Atlanta, GA, USA
| | - M Ryan Smith
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, School of Medicine, Emory University, Atlanta, GA, USA; Atlanta VA Healthcare System, Decatur, GA, USA
| | - Douglas I Walker
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - P Barry Ryan
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Parinya Panuwet
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Elizabeth J Corwin
- Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, GA, USA
| | - Kurunthachalam Kannan
- Wadsworth Center, New York State Department of Health, Albany, NY, USA; Department of Environmental Health Sciences, State University of New York at Albany, NY, USA
| | - Dean P Jones
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, School of Medicine, Emory University, Atlanta, GA, USA
| | - Carmen J Marsit
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Youran Tan
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Donghai Liang
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Stephanie M Eick
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Dana Boyd Barr
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA.
| |
Collapse
|
56
|
Lee CS, Venkatesan AK. Cationic surfactant-assisted foam fractionation enhances the removal of short-chain perfluoroalkyl substances from impacted water. CHEMOSPHERE 2024; 362:142614. [PMID: 38878978 DOI: 10.1016/j.chemosphere.2024.142614] [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: 04/16/2024] [Revised: 06/12/2024] [Accepted: 06/13/2024] [Indexed: 06/22/2024]
Abstract
Several studies have demonstrated that air-bubbling and foam fractionation techniques can efficiently remove long-chain PFAS from contaminated water. However, removing short-chain PFAS is challenging due to its lower surface activity and inability to form self-assembly structures at the air-water interface. In this study, we tested various additives, including salts, surfactants, and polymers, to improve short-chain PFAS (e.g., perfluorobutanesulfonic acid (PFBS) and perfluorobutanoic acid (PFBA)) removal in non-foaming solutions using a bench-scale system. We found that in the presence of cetyltrimethylammonium chloride (CTAC) and salt, air-bubbling can significantly remove 0.5 μg L-1 of PFBS and PFBA in deionized water by >99% (15 min) and 81% (60 min), respectively. The decline of surface tension and the formation of thin foam-like layers during bubbling, controlled by the concentration of CTAC, significantly improved the removal of short-chain PFAS. Adding anionic and neutral surfactants showed no removal of short-chain PFAS during bubbling, suggesting the importance of the electrostatic interactions between short-chain PFAS and the cationic CTAC. We observed a 1:1 M ratio between CTAC and PFBS removed from the solution, suggesting the formation of ion pairs in the solution and enhancing the surface activity of the overall neutral (PFAS-CTAC) complex. A mass balance of the system revealed that the primary mechanism by which PFAS was removed from non-foaming waters was through aerosol generation (70-100%). Using the optimized condition, PFAS mixtures (short- and long-chain PFAS, including five recently regulated PFAS by USPEA, 2 nM each) in deionized water and natural groundwater were successfully removed to below detection (>99% removal; <2 ng L-1), except for PFBA (25-73% removal). These results provide an improved understanding of the mechanism by which PFAS is removed during foam fractionation and highlight the need for capturing aerosols enriched with PFAS to prevent secondary contamination.
Collapse
Affiliation(s)
- Cheng-Shiuan Lee
- Research Center for Environmental Changes, Academia Sinica, Taipei, 115, Taiwan
| | - Arjun K Venkatesan
- Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark, NJ, 07102, USA.
| |
Collapse
|
57
|
Song Z, Wang X, Feng W, Armand M, Zhou Z, Zhang H. Designer Anions for Better Rechargeable Lithium Batteries and Beyond. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2310245. [PMID: 38839065 DOI: 10.1002/adma.202310245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 04/17/2024] [Indexed: 06/07/2024]
Abstract
Non-aqueous electrolytes, generally consisting of metal salts and solvating media, are indispensable elements for building rechargeable batteries. As the major sources of ionic charges, the intrinsic characters of salt anions are of particular importance in determining the fundamental properties of bulk electrolyte, as well as the features of the resulting electrode-electrolyte interphases/interfaces. To cope with the increasing demand for better rechargeable batteries requested by emerging application domains, the structural design and modifications of salt anions are highly desired. Here, salt anions for lithium and other monovalent (e.g., sodium and potassium) and multivalent (e.g., magnesium, calcium, zinc, and aluminum) rechargeable batteries are outlined. Fundamental considerations on the design of salt anions are provided, particularly involving specific requirements imposed by different cell chemistries. Historical evolution and possible synthetic methodologies for metal salts with representative salt anions are reviewed. Recent advances in tailoring the anionic structures for rechargeable batteries are scrutinized, and due attention is paid to the paradigm shift from liquid to solid electrolytes, from intercalation to conversion/alloying-type electrodes, from lithium to other kinds of rechargeable batteries. The remaining challenges and key research directions in the development of robust salt anions are also discussed.
Collapse
Affiliation(s)
- Ziyu Song
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, China
| | - Xingxing Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, China
| | - Wenfang Feng
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, China
| | - Michel Armand
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, Vitoria-Gasteiz, 01510, Spain
| | - Zhibin Zhou
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, China
| | - Heng Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, China
| |
Collapse
|
58
|
Roth K, Yang Z, Agarwal M, Birbeck J, Westrick J, Lydic T, Gurdziel K, Petriello MC. Exposure of Ldlr-/- Mice to a PFAS Mixture and Outcomes Related to Circulating Lipids, Bile Acid Excretion, and the Intestinal Transporter ASBT. ENVIRONMENTAL HEALTH PERSPECTIVES 2024; 132:87007. [PMID: 39177951 PMCID: PMC11343043 DOI: 10.1289/ehp14339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 07/24/2024] [Accepted: 07/29/2024] [Indexed: 08/24/2024]
Abstract
BACKGROUND Previous epidemiological studies have repeatedly found per- and polyfluoroalkyl substances (PFAS) exposure associated with higher circulating cholesterol, one of the greatest risk factors for development of coronary artery disease. The main route of cholesterol catabolism is through its conversion to bile acids, which circulate between the liver and ileum via enterohepatic circulation. Patients with coronary artery disease have decreased bile acid excretion, indicating that PFAS-induced impacts on enterohepatic circulation may play a critical role in cardiovascular risk. OBJECTIVES Using a mouse model with high levels of low-density and very low-density lipoprotein (LDL and VLDL, respectively) cholesterol and aortic lesion development similar to humans, the present study investigated mechanisms linking exposure to a PFAS mixture with increased cholesterol. METHODS Male and female L d l r - / - mice were fed an atherogenic diet (Clinton/Cybulsky low fat, 0.15% cholesterol) and exposed to a mixture of 5 PFAS representing legacy, replacement, and emerging subtypes (i.e., PFOA, PFOS, PFHxS, PFNA, GenX), each at a concentration of 2 mg / L , for 7 wk. Blood was collected longitudinally for cholesterol measurements, and mass spectrometry was used to measure circulating and fecal bile acids. Transcriptomic analysis of ileal samples was performed via RNA sequencing. RESULTS After 7 wk of PFAS exposure, average circulating PFAS levels were measured at 21.6, 20.1, 31.2, 23.5, and 1.5 μ g / mL in PFAS-exposed females and 12.9, 9.7, 23, 14.3, and 1.7 μ g / mL in PFAS-exposed males for PFOA, PFOS, PFHxS, PFNA, and GenX, respectively. Total circulating cholesterol levels were higher in PFAS-exposed mice after 7 wk (352 mg / dL vs. 415 mg / dL in female mice and 392 mg / dL vs. 488 mg / dL in male mice exposed to vehicle or PFAS, respectively). Total circulating bile acid levels were higher in PFAS-exposed mice (2,978 pg / μ L vs. 8,496 pg / μ L in female mice and 1,960 pg / μ L vs. 4,452 pg / μ L in male mice exposed to vehicle or PFAS, respectively). In addition, total fecal bile acid levels were lower in PFAS-exposed mice (1,797 ng / mg vs. 682 ng / mg in females and 1,622 ng / mg vs. 670 ng / mg in males exposed to vehicle or PFAS, respectively). In the ileum, expression levels of the apical sodium-dependent bile acid transporter (ASBT) were higher in PFAS-exposed mice. DISCUSSION Mice exposed to a PFAS mixture displayed higher circulating cholesterol and bile acids perhaps due to impacts on enterohepatic circulation. This study implicates PFAS-mediated effects at the site of the ileum as a possible critical mediator of increased cardiovascular risk following PFAS exposure. https://doi.org/10.1289/EHP14339.
Collapse
Affiliation(s)
- Katherine Roth
- Institute of Environmental Health Sciences, Wayne State University, Detroit, Michigan, USA
| | - Zhao Yang
- Institute of Environmental Health Sciences, Wayne State University, Detroit, Michigan, USA
| | - Manisha Agarwal
- Department of Pharmacology, School of Medicine, Wayne State University, Detroit, Michigan, USA
| | - Johnna Birbeck
- Department of Chemistry, Lumigen Instrumentation Center, Wayne State University, Detroit, Michigan, USA
| | - Judy Westrick
- Department of Chemistry, Lumigen Instrumentation Center, Wayne State University, Detroit, Michigan, USA
| | - Todd Lydic
- Department of Physiology, Michigan State University, East Lansing, Michigan, USA
| | - Katherine Gurdziel
- Institute of Environmental Health Sciences, Wayne State University, Detroit, Michigan, USA
- Genome Sciences Core, Wayne State University, Detroit, Michigan, USA
| | - Michael C. Petriello
- Institute of Environmental Health Sciences, Wayne State University, Detroit, Michigan, USA
- Department of Pharmacology, School of Medicine, Wayne State University, Detroit, Michigan, USA
| |
Collapse
|
59
|
Teffera M, Veith AC, Ronnekleiv-Kelly S, Bradfield CA, Nikodemova M, Tussing-Humphreys L, Malecki K. Diverse mechanisms by which chemical pollutant exposure alters gut microbiota metabolism and inflammation. ENVIRONMENT INTERNATIONAL 2024; 190:108805. [PMID: 38901183 DOI: 10.1016/j.envint.2024.108805] [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: 12/11/2023] [Revised: 05/28/2024] [Accepted: 06/07/2024] [Indexed: 06/22/2024]
Abstract
The human gut microbiome, the host, and the environment are inextricably linked across the life course with significant health impacts. Consisting of trillions of bacteria, fungi, viruses, and other micro-organisms, microbiota living within our gut are particularly dynamic and responsible for digestion and metabolism of diverse classes of ingested chemical pollutants. Exposure to chemical pollutants not only in early life but throughout growth and into adulthood can alter human hosts' ability to absorb and metabolize xenobiotics, nutrients, and other components critical to health and longevity. Inflammation is a common mechanism underlying multiple environmentally related chronic conditions, including cardiovascular disease, multiple cancer types, and mental health. While growing research supports complex interactions between pollutants and the gut microbiome, significant gaps exist. Few reviews provide descriptions of the complex mechanisms by which chemical pollutants interact with the host microbiome through either direct or indirect pathways to alter disease risk, with a particular focus on inflammatory pathways. This review focuses on examples of several classes of pollutants commonly ingested by humans, including (i) heavy metals, (ii) persistent organic pollutants (POPs), and (iii) nitrates. Digestive enzymes and gut microbes are the first line of absorption and metabolism of these chemicals, and gut microbes have been shown to alter compounds from a less to more toxic state influencing subsequent distribution and excretion. In addition, chemical pollutants may interact with or alter the selection of more harmful and less commensal microbiota, leading to gut dysbiosis, and changes in receptor-mediated signaling pathways that alter the integrity and function of the gut intestinal tract. Arsenic, cadmium, and lead (heavy metals), influence the microbiome directly by altering different classes of bacteria, and subsequently driving inflammation through metabolite production and different signaling pathways (LPS/TLR4 or proteoglycan/TLR2 pathways). POPs can alter gut microbial composition either directly or indirectly depending on their ability to activate key signaling pathways within the intestine (e.g., PCB-126 and AHR). Nitrates and nitrites' effect on the gut and host may depend on their ability to be transformed to secondary and tertiary metabolites by gut bacteria. Future research should continue to support foundational research both in vitro, in vivo, and longitudinal population-based research to better identify opportunities for prevention, gain additional mechanistic insights into the complex interactions between environmental pollutants and the microbiome and support additional translational science.
Collapse
Affiliation(s)
- Menna Teffera
- Molecular and Environmental Toxicology, University of Wisconsin-Madison, Madison, WI, US; Biotechnology Center, University of Wisconsin-Madison, Madison, WI, US.
| | - Alex C Veith
- Department of Oncology, University of Wisconsin-Madison, Madison, WI, US.
| | - Sean Ronnekleiv-Kelly
- Molecular and Environmental Toxicology, University of Wisconsin-Madison, Madison, WI, US; Biotechnology Center, University of Wisconsin-Madison, Madison, WI, US; Department of Surgery, University of Wisconsin-Madison, Madison, WI, US.
| | - Christopher A Bradfield
- Molecular and Environmental Toxicology, University of Wisconsin-Madison, Madison, WI, US; Department of Surgery, University of Wisconsin-Madison, Madison, WI, US; Department of Oncology, University of Wisconsin-Madison, Madison, WI, US.
| | - Maria Nikodemova
- College of Public Health and Health Professionals, University of Florida, FL, US.
| | - Lisa Tussing-Humphreys
- Department of Kinesiology and Nutrition, University of Illinois-Chicago, Chicago, IL, US; University of Illinois Cancer Center, University of Illinois-Chicago, Chicago, IL, US.
| | - Kristen Malecki
- Molecular and Environmental Toxicology, University of Wisconsin-Madison, Madison, WI, US; Biotechnology Center, University of Wisconsin-Madison, Madison, WI, US; University of Illinois Cancer Center, University of Illinois-Chicago, Chicago, IL, US; Environmental Occupational Health Sciences, University of Illinois-Chicago, Chicago, IL, US.
| |
Collapse
|
60
|
Ricolfi L, Vendl C, Bräunig J, Taylor MD, Hesselson D, Gregory Neely G, Lagisz M, Nakagawa S. A research synthesis of humans, animals, and environmental compartments exposed to PFAS: A systematic evidence map and bibliometric analysis of secondary literature. ENVIRONMENT INTERNATIONAL 2024; 190:108860. [PMID: 38968830 DOI: 10.1016/j.envint.2024.108860] [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: 10/20/2023] [Revised: 06/24/2024] [Accepted: 06/28/2024] [Indexed: 07/07/2024]
Abstract
BACKGROUND Per- and polyfluoroalkyl substances (PFAS) are a class of widely used anthropogenic chemicals. Concerns regarding their persistence and potential adverse effects have led to multiple secondary research publications. Here, we aim to assess the resulting evidence base in the systematic secondary literature by examining research gaps, evaluating the quality of reviews, and exploring interdisciplinary connections. METHODS This study employed a systematic evidence-mapping approach to assess the secondary literature on the biological, environmental, and medical aspects of exposure to 35 fluorinated compounds. The inclusion criteria encompassed systematic reviews published in peer-reviewed journals, pre-prints, and theses. Comprehensive searches across electronic databases and grey literature identified relevant reviews. Data extraction and synthesis involved mapping literature content and narrative descriptions. We employed a modified version of the AMSTAR2 checklist to evaluate the methodological rigour of the reviews. A bibliometric data analysis uncovered patterns and trends in the academic literature. A research protocol for this study was previously pre-registered (osf.io/2tpn8) and published (Vendl et al., Environment International 158 (2022) 106973). The database is freely accessible through the interactive and user-friendly web application of this systematic evidence map at https://hi-this-is-lorenzo.shinyapps.io/PFAS_SEM_Shiny_App/. RESULTS Our map includes a total of 175 systematic reviews. Over the years, there has been a steady increase in the annual number of publications, with a notable surge in 2021. Most reviews focused on human exposure, whereas environmental and animal-related reviews were fewer and often lacked a rigorous systematic approach to literature search and screening. Review outcomes were predominantly associated with human health, particularly with reproductive and children's developmental health. Animal reviews primarily focused on studies conducted in controlled laboratory settings, and wildlife reviews were characterised by an over-representation of birds and fish species. Recent reviews increasingly incorporated quantitative synthesis methodologies. The methodological strengths of the reviews included detailed descriptions of study selection processes and disclosure of potential conflicts of interest. However, weaknesses were observed in the critical lack of detail in reporting methods. A bibliometric analysis revealed that the most productive authors collaborate within their own country, leading to limited and clustered international collaborations. CONCLUSIONS In this overview of the available systematic secondary literature, we map literature content, assess reviews' methodological quality, highlight data gaps, and draw research network clusters. We aim to facilitate literature reviews, guide future research initiatives, and enhance opportunities for cross-country collaboration. Furthermore, we discuss how this systematic evidence map and its publicly available database benefit scientists, regulatory agencies, and other stakeholders by providing access to current systematic secondary literature on PFAS exposure.
Collapse
Affiliation(s)
- Lorenzo Ricolfi
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales Sydney, Sydney, Australia.
| | - Catharina Vendl
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales Sydney, Sydney, Australia; Dauphin Island Sea Lab, Dauphin Island, Al, USA.
| | - Jennifer Bräunig
- Queensland Alliance for Environmental Health Sciences, Faculty of Health and Behavioural Sciences, The University of Queensland, Brisbane, Australia; NSW Department of Climate Change, Energy, the Environment and Water, Environment Protection Science Branch, Sydney, Australia.
| | - Matthew D Taylor
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales Sydney, Sydney, Australia; Queensland Alliance for Environmental Health Sciences, Faculty of Health and Behavioural Sciences, The University of Queensland, Brisbane, Australia; Port Stephens Fisheries Institute, New South Wales Department of Primary Industries, Nelson Bay, Australia.
| | - Daniel Hesselson
- Centenary Institute and Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.
| | - G Gregory Neely
- Dr. John and Anne Chong Lab for Functional Genomics, Charles Perkins Centre, School of Life and Environmental Sciences, University of Sydney, Sydney, Australia.
| | - Malgorzata Lagisz
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales Sydney, Sydney, Australia; Theoretical Sciences Visiting Program, Okinawa Institute of Science and Technology Graduate University, Onna, Japan.
| | - Shinichi Nakagawa
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales Sydney, Sydney, Australia; Theoretical Sciences Visiting Program, Okinawa Institute of Science and Technology Graduate University, Onna, Japan.
| |
Collapse
|
61
|
Ricolfi L, Taylor MD, Yang Y, Lagisz M, Nakagawa S. Maternal transfer of per- and polyfluoroalkyl substances (PFAS) in wild birds: A systematic review and meta-analysis. CHEMOSPHERE 2024; 361:142346. [PMID: 38759804 DOI: 10.1016/j.chemosphere.2024.142346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/07/2024] [Accepted: 05/14/2024] [Indexed: 05/19/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are synthetic chemicals widely used in consumer products. PFAS can accumulate in animal tissues, resulting in biomagnification and adverse effects on wildlife, such as reproductive impairment. In bird species, PFAS are transferred from mothers to eggs along with essential nutrients and may affect embryo development. However, the extent of maternal PFAS transfer across different species and compounds remains poorly understood. Here, we conducted a systematic review and meta-analysis to quantify maternal PFAS transfer in wild birds and investigate potential sources of variation. We tested the moderating effects of compounds' physicochemical properties and biological traits of studied birds. The dataset included 505 measurements of PFAS concentration and 371 effect sizes derived from 13 studies on 16 bird species and 25 compounds. Overall, across all studies and species, we found a 41% higher concentration of PFAS in offspring than in mothers. Specifically, contaminants were concentrated in the yolk, longer and heavier compounds showed preferential transfer, larger clutch size was associated with decreased PFAS transfer and a higher transfer rate was shown in species with piscivorous and opportunistic/diverse diets. A validation assessment showed good robustness of the overall meta-analytic result. Given the crucial role of birds in maintaining ecological balance, this research article has relevant implications for modelling the impacts of PFAS on wildlife, ecosystems, and human health.
Collapse
Affiliation(s)
- Lorenzo Ricolfi
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales Sydney, Sydney, NSW, 2052, Australia.
| | - Matthew D Taylor
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales Sydney, Sydney, NSW, 2052, Australia; Port Stephens Fisheries Institute, New South Wales Department of Primary Industries, Nelson Bay, Australia; Queensland Alliance for Environmental Health Sciences, Faculty of Health and Behavioural Sciences, The University of Queensland, Brisbane, Australia.
| | - Yefeng Yang
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales Sydney, Sydney, NSW, 2052, Australia.
| | - Malgorzata Lagisz
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales Sydney, Sydney, NSW, 2052, Australia.
| | - Shinichi Nakagawa
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales Sydney, Sydney, NSW, 2052, Australia.
| |
Collapse
|
62
|
Barton KE, Anthamatten PJ, Adgate JL, McKenzie LM, Starling AP, Berg K, Murphy RC, Richardson K. A data-driven approach to identifying PFAS water sampling priorities in Colorado, United States. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2024:10.1038/s41370-024-00705-7. [PMID: 39090285 DOI: 10.1038/s41370-024-00705-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 07/08/2024] [Accepted: 07/08/2024] [Indexed: 08/04/2024]
Abstract
BACKGROUND Per and polyfluoroalkyl substances (PFAS), a class of environmentally and biologically persistent chemicals, have been used across many industries since the middle of the 20th century. Some PFAS have been linked to adverse health effects. OBJECTIVE Our objective was to incorporate known and potential PFAS sources, physical characteristics of the environment, and existing PFAS water sampling results into a PFAS risk prediction map that may be used to develop a PFAS water sampling prioritization plan for the Colorado Department of Public Health and Environment (CDPHE). METHODS We used random forest classification to develop a predictive surface of potential groundwater contamination from two PFAS, perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA). The model predicted PFAS risk at locations without sampling data into one of three risk categories after being "trained" with existing PFAS water sampling data. We used prediction results, variable importance ranking, and population characteristics to develop recommendations for sampling prioritization. RESULTS Sensitivity and precision ranged from 58% to 90% in the final models, depending on the risk category. The model and prioritization approach identified private wells in specific census blocks, as well as schools, mobile home parks, and public water systems that rely on groundwater as priority sampling locations. We also identified data gaps including areas of the state with limited sampling and potential source types that need further investigation. IMPACT STATEMENT This work uses random forest classification to predict the risk of groundwater contamination from two per- and polyfluoroalkyl substances (PFAS) across the state of Colorado, United States. We developed the prediction model using data on known and potential PFAS sources and physical characteristics of the environment, and "trained" the model using existing PFAS water sampling results. This data-driven approach identifies opportunities for PFAS water sampling prioritization as well as information gaps that, if filled, could improve model predictions. This work provides decision-makers information to effectively use limited resources towards protection of populations most susceptible to the impacts of PFAS exposure.
Collapse
Affiliation(s)
- Kelsey E Barton
- Toxicology and Environmental Epidemiology Office, Colorado Department of Public Health & Environment, Denver, CO, USA.
- Department of Environmental & Occupational Health, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
| | - Peter J Anthamatten
- Department of Geography and Environmental Science, University of Colorado Denver, Denver, CO, USA
| | - John L Adgate
- Department of Environmental & Occupational Health, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Lisa M McKenzie
- Department of Environmental & Occupational Health, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Anne P Starling
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
| | - Kevin Berg
- Toxicology and Environmental Epidemiology Office, Colorado Department of Public Health & Environment, Denver, CO, USA
| | - Robert C Murphy
- Source Water Assessment & Protection Program, Colorado Department of Public Health & Environment, Denver, CO, USA
| | - Kristy Richardson
- Toxicology and Environmental Epidemiology Office, Colorado Department of Public Health & Environment, Denver, CO, USA
| |
Collapse
|
63
|
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] [MESH Headings] [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.
Collapse
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.
| |
Collapse
|
64
|
Mahoney H, da Silva F, Brinkmann M, Giesy JP. Mixtures of legacy and replacement perfluorosulphonic acids (PFSAs) demonstrate ratio-, concentration- and endpoint-dependent synergistic interactions in vitro. CHEMOSPHERE 2024; 361:142446. [PMID: 38801907 DOI: 10.1016/j.chemosphere.2024.142446] [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: 05/21/2024] [Accepted: 05/24/2024] [Indexed: 05/29/2024]
Abstract
The extensive use of poly- and per-fluoroalkyl substances (PFASs) has les to their widespread presence in the environment, raising concerns about potential toxicity. While certain PFASs of concern have been phased-out or banned, new PFASs continue to be produced. Two such substances are perfluoroethylcyclohexane sulphonate (PFECHS) and perfluorobutane sulphamide (FBSA), replacements of perfluoroctanesulphonic acid (PFOS) that have recently been detected in multiple environmental media around the globe. Despite PFASs generally occurring in the environment as mixtures, few data are available outlining the effects of PFAS mixtures. Therefore, this research investigated the interaction potential of binary and ternary mixtures of emerging and legacy PFASs. The immortalized rainbow trout gill cell line (RTgill-W1) was chosen as the experimental model to investigate two apical endpoints: cytotoxicity and phospholipidosis. RTgill-W1 cells were exposed for 24 h to each compound to obtain endpoint-specific effect concentrations (LCx; ECx). These values were then applied to formulate mixture predictions following the Loewes Additivity and Steel and Peckham methods. Based on cytotoxicity, relative potencies of individual compounds were: PFOS > PFECHS > FSBA. PFOS and PFECHS had nearly identical effects on phospholipidosis, while FSBA did not have any effects. Most mixtures had a synergistic effect on cytotoxicity, but the effect was both dose- and ratio-dependent. PFOS and PFECHS were additive at lower concentrations (LC10) and synergistic at higher concentrations (LC50; 3:1, 1:1, and 1:3). PFECHS and FSBA mixtures were synergistic at all doses and ratios (3:1, 1:1, 1:3), while FBSA and PFOS were mainly synergistic at higher concentrations and at ratios favouring PFOS (1:1, 1:3). Tertiary combinations were mainly synergistic. For phospholipidosis, mixtures were strictly additive. These results are strongly suggestive of synergism between emerging PFAS replacements and highlight that independent apical mechanisms of different PFASs could combine to induce unexpected toxicity. Considering that emerging replacements are continuing to increase in concentration in the environment, such mixture scenarios are also likely to continue to increase in probability.
Collapse
Affiliation(s)
- Hannah Mahoney
- Toxicology Center, University of Saskatchewan, 44 Campus Dr, Saskatoon, Saskatchewan, Canada
| | - Francisco da Silva
- Toxicology Center, University of Saskatchewan, 44 Campus Dr, Saskatoon, Saskatchewan, Canada
| | - Markus Brinkmann
- Toxicology Center, University of Saskatchewan, 44 Campus Dr, Saskatoon, Saskatchewan, Canada; School of Environment and Sustainability, University of Saskatchewan, 117 Science Pl, Saskatoon, Saskatchewan, Canada; Global Institute for Water Security, University of Saskatchewan, 11 Innovation Blvd, Saskatoon, Saskatchewan, Canada; Centre for Hydrology, University of Saskatchewan, 121 Research Dr, Saskatoon, Saskatchewan, Canada.
| | - John P Giesy
- Toxicology Center, University of Saskatchewan, 44 Campus Dr, Saskatoon, Saskatchewan, Canada; Department of Veterinary Biomedical Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada; Department of Integrative Biology and Center for Integrative Toxicology, Michigan State University, MI, USA; Department of Environmental Science, Baylor University, One Bear Place #97266, TX, USA
| |
Collapse
|
65
|
Fernando EY, Sarkar D, Rodwihok C, Satpathy A, Zhang J, Rahmati R, Datta R, Christodoulatos C, Boufadel M, Larson S, Zhang Z. Unrefined and Milled Ilmenite as a Cost-Effective Photocatalyst for UV-Assisted Destruction and Mineralization of PFAS. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3801. [PMID: 39124465 PMCID: PMC11312862 DOI: 10.3390/ma17153801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Revised: 07/24/2024] [Accepted: 07/29/2024] [Indexed: 08/12/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are fluorinated and refractory pollutants that are ubiquitous in industrial wastewater. Photocatalytic destruction of such pollutants with catalysts such as TiO2 and ZnO is an attractive avenue for removal of PFAS, but refined forms of such photocatalysts are expensive. This study, for the first time, utilized milled unrefined raw mineral ilmenite, coupled to UV-C irradiation to achieve mineralization of the two model PFAS compounds perfluorooctanoic acid (PFOA) and perfluoro octane sulfonic acid (PFOS). Results obtained using a bench-scale photocatalytic reactor system demonstrated rapid removal kinetics of PFAS compounds (>90% removal in less than 10 h) in environmentally-relevant concentrations (200-1000 ppb). Raw ilmenite was reused over three consecutive degradation cycles of PFAS, retaining >80% removal efficiency. Analysis of degradation products indicated defluorination and the presence of shorter-chain PFAS intermediates in the initial samples. End samples indicated the disappearance of short-chain PFAS intermediates and further accumulation of fluoride ions, suggesting that original PFAS compounds underwent mineralization due to an oxygen-radical-based photocatalytic destruction mechanism induced by TiO2 present in ilmenite and UV irradiation. The outcome of this study implies that raw ilmenite coupled to UV-C is suitable for cost-effective reactor operation and efficient photocatalytic destruction of PFAS compounds.
Collapse
Affiliation(s)
- Eustace Y. Fernando
- Department of Civil, Environmental and Ocean Engineering, Charles V. Schaefer, Jr. School of Engineering and Science, Rocco Technology Center, Stevens Institute of Technology, Hoboken, NJ 07030, USA; (E.Y.F.); (C.R.); (A.S.); (R.R.); (C.C.)
| | - Dibyendu Sarkar
- Department of Civil, Environmental and Ocean Engineering, Charles V. Schaefer, Jr. School of Engineering and Science, Rocco Technology Center, Stevens Institute of Technology, Hoboken, NJ 07030, USA; (E.Y.F.); (C.R.); (A.S.); (R.R.); (C.C.)
| | - Chatchai Rodwihok
- Department of Civil, Environmental and Ocean Engineering, Charles V. Schaefer, Jr. School of Engineering and Science, Rocco Technology Center, Stevens Institute of Technology, Hoboken, NJ 07030, USA; (E.Y.F.); (C.R.); (A.S.); (R.R.); (C.C.)
| | - Anshuman Satpathy
- Department of Civil, Environmental and Ocean Engineering, Charles V. Schaefer, Jr. School of Engineering and Science, Rocco Technology Center, Stevens Institute of Technology, Hoboken, NJ 07030, USA; (E.Y.F.); (C.R.); (A.S.); (R.R.); (C.C.)
| | - Jinxin Zhang
- Department of Chemistry and Chemical Biology, Charles V. Schaefer, Jr. School of Engineering and Science, Hoboken, NJ 07030, USA;
| | - Roxana Rahmati
- Department of Civil, Environmental and Ocean Engineering, Charles V. Schaefer, Jr. School of Engineering and Science, Rocco Technology Center, Stevens Institute of Technology, Hoboken, NJ 07030, USA; (E.Y.F.); (C.R.); (A.S.); (R.R.); (C.C.)
| | - Rupali Datta
- Department of Biological Sciences, Michigan Technological University, Houghton, MI 49931, USA;
| | - Christos Christodoulatos
- Department of Civil, Environmental and Ocean Engineering, Charles V. Schaefer, Jr. School of Engineering and Science, Rocco Technology Center, Stevens Institute of Technology, Hoboken, NJ 07030, USA; (E.Y.F.); (C.R.); (A.S.); (R.R.); (C.C.)
| | - Michel Boufadel
- Department of Civil and Environmental Engineering, New Jersey Institute of Technology, 323 MLK Blvd, Newark, NJ 07101, USA;
| | - Steven Larson
- U.S. Army Engineer Research and Development Center (ERDC), 3909 Halls Ferry Road, Vicksburg, MS 39180, USA;
| | - Zhiming Zhang
- Henry M. Rowan College of Engineering, Rowan University, Rowan Hall, 600 North Campus Drive, Glassboro, NJ 08028, USA;
| |
Collapse
|
66
|
Wu B, Sheng N, Li Z, Wang J, Ji S, Zhao F, Pan Y, Qu Y, Wei Y, Xie L, Li Y, Hu X, Wu C, Zhang Z, Qiu Y, Zheng X, Zhang W, Hu X, Song H, Cai J, Cao Z, Ji JS, Lv Y, Dai J, Shi X. Positive Associations of Perfluoroalkyl and Polyfluoroalkyl Substances With Hypertension May Be Attenuated by Endogenous Sex Hormones: A Nationally Representative Cross-Sectional Study. Hypertension 2024; 81:1799-1810. [PMID: 38853753 DOI: 10.1161/hypertensionaha.123.22127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 05/06/2024] [Indexed: 06/11/2024]
Abstract
BACKGROUND Perfluoroalkyl and polyfluoroalkyl substance (PFAS) has endocrine-disrupting properties and may affect blood pressure. Endogenous hormones also play a crucial role in the progression of hypertension. However, their interaction with hypertension remains to be explored. METHODS This study included 10 794 adults aged ≥18 years from the China National Human Biomonitoring program. Weighted multiple logistic regression and linear regression were used to examine the associations of serum PFAS with hypertension, diastolic blood pressure, and systolic blood pressure. Joint effects of PFAS mixtures on hypertension, diastolic blood pressure, and systolic blood pressure were evaluated using quantile-based g-computation. Additive and multiplicative interactions were used to assess the role of PFAS with testosterone and estradiol on hypertension. RESULTS The prevalence of hypertension in Chinese adults was 35.50%. Comparing the fourth quartile with the first quartile, odds ratio (95% CI) of hypertension were 1.53 (1.13-2.09) for perfluorononanoic acid, 1.40 (1.03-1.91) for perfluorodecanoic acid, 1.34 (1.02-1.78) for perfluoroheptane sulfonic acid, and 1.46 (1.07-1.99) for perfluorooctane sulfonic acid. Moreover, PFAS mixtures, with perfluorononanoic acid contributing the most, were positively associated with hypertension, diastolic blood pressure, and systolic blood pressure. PFAS and endogenous hormones had an antagonistic interaction in hypertension. For example, the relative excess risk ratio, attributable proportion, and synergy index for perfluorononanoic acid and estradiol were -3.61 (-4.68 to -2.53), -1.65 (-2.59 to -0.71), and 0.25 (0.13-0.47), respectively. CONCLUSIONS Perfluorononanoic acid, perfluorodecanoic acid, perfluoroheptane sulfonic acid, perfluorooctane sulfonic acid, and PFAS mixtures showed positive associations with hypertension, systolic blood pressure, and diastolic blood pressure. Positive associations of PFAS with hypertension might be attenuated by increased levels of endogenous sex hormones.
Collapse
Affiliation(s)
- Bing Wu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Nan Sheng
- State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants, School of Environmental Science and Engineering, Shanghai Jiao Tong University, China (N.S., J.W., Y.P., J.D.)
| | - Zheng Li
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Jinghua Wang
- State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants, School of Environmental Science and Engineering, Shanghai Jiao Tong University, China (N.S., J.W., Y.P., J.D.)
| | - Saisai Ji
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Feng Zhao
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Yitao Pan
- State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants, School of Environmental Science and Engineering, Shanghai Jiao Tong University, China (N.S., J.W., Y.P., J.D.)
| | - Yingli Qu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Yuan Wei
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Linna Xie
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Yawei Li
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Xiaojian Hu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Changzi Wu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Zheng Zhang
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Yidan Qiu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Xulin Zheng
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Wenli Zhang
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Xuehua Hu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Haocan Song
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Jiayi Cai
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Zhaojin Cao
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - John S Ji
- Vanke School of Public Health, Tsinghua University, Beijing, China (J.S.J.)
| | - Yuebin Lv
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
| | - Jiayin Dai
- State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants, School of Environmental Science and Engineering, Shanghai Jiao Tong University, China (N.S., J.W., Y.P., J.D.)
- Center for Global Health, School of Public Health, Nanjing Medical University, China (J.D., X.S.)
| | - Xiaoming Shi
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing (B.W., Z.L., S.J., F.Z., Y.Q., Y.W., L.X., Y.L., X.H., C.W., Z.Z., Y.Q., X.Z., W.Z., X.H., H.S., J.C., Z.C., Y.L., X.S.)
- Center for Global Health, School of Public Health, Nanjing Medical University, China (J.D., X.S.)
| |
Collapse
|
67
|
Obiako PC, Ayisire SO, Sayes CM. Impact of perfluorooctanoic acid (PFOA) and perfluorobutanoic acid (PFBA) on oxidative stress and metabolic biomarkers in human neuronal cells (SH-SY5Y). ENVIRONMENT INTERNATIONAL 2024; 190:108864. [PMID: 38986427 DOI: 10.1016/j.envint.2024.108864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 06/04/2024] [Accepted: 06/30/2024] [Indexed: 07/12/2024]
Abstract
Perfluorinated alkyl substances (PFAS) are pervasive environmental contaminants that have attracted considerable attention due to their widespread utilization, resilient characteristics, adverse health implications, and regulatory scrutiny. Despite documented toxicity in living organisms, the precise molecular mechanisms governing the induced adverse effects remain unclear. This study aims to elucidate mechanisms of toxic action by collecting empirical data sets along oxidative stress and metabolic disruption pathways. We investigated the impact of long-chain PFAS (perfluorooctanoic acid (PFOA)) and its short-chain analog (perfluorobutanoic acid (PFBA)) on human neuronal cells (SH-SY5Y). The functionalities of enzymes associated with oxidative stress (catalase and glutathione reductase) and cellular metabolism (lactate dehydrogenase and pyruvate dehydrogenase) were also characterized. Our results reveal that a 24-hour exposure to PFOA and PFBA generated significant levels of reactive oxygen species. Correspondingly, there was a notable decline in catalase and glutathione reductase activities, with PFBA demonstrating a more pronounced effect. High concentrations of PFOA and PFBA reduced metabolic activity. Lactate dehydrogenase activity was only impacted by a high concentration of PFBA, while pyruvate dehydrogenase activity was decreased with PFBA exposure and increased with PFOA exposure. The findings from this study contribute to the knowledge of PFAS and cell interactions and reveal the potential underlying mechanisms of PFAS-induced toxicity.
Collapse
Affiliation(s)
- Precious C Obiako
- Department of Environmental Science, Baylor University, Waco, TX, United States
| | - Solomon O Ayisire
- Department of Environmental Science, Baylor University, Waco, TX, United States
| | - Christie M Sayes
- Department of Environmental Science, Baylor University, Waco, TX, United States.
| |
Collapse
|
68
|
Barutcu AR, Black MB, Andersen ME. Transcriptomic re-analyses of human hepatocyte spheroids treated with PFAS reveals chain length and dose-dependent modes of action. Toxicol Appl Pharmacol 2024; 489:117013. [PMID: 38936668 DOI: 10.1016/j.taap.2024.117013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 06/19/2024] [Accepted: 06/21/2024] [Indexed: 06/29/2024]
Abstract
To identify pathway perturbations and examine biological modes of action (MOAs) for various perfluoroalkyl substances, we re-analyzed published in vitro gene expression studies from human primary liver spheroids. With treatment times ranging from 10 to 14 days, shorter-chain PFAS (those with 6 or fewer fluorinated carbon atoms in the alkyl chain) showed enrichment for pathways of fatty acid metabolism and fatty acid beta-oxidation with upregulated genes. Longer-chain PFAS compounds, specifically PFOS (perfluorooctane sulfonate), PFDS (perfluorodecane sulfonate), and higher doses of PFOA (perfluorooctanoic acid), had enrichment for pathways involved in steroid metabolism, fatty acid metabolism, and biological oxidation for downregulated genes. Although PFNA (perfluorononanoic acid), PFDA (perfluorodecanoic acid), and PFUnDA (perfluoroundecanoic acid) were more toxic and could only be examined after a 1-day treatment, all three had enrichment patterns similar to those observed with PFOS. With PFOA there were dose-dependent changes in pathway enrichment, shifting from upregulation of fatty acid metabolism and downregulation of steroid metabolism to downregulation of both at higher doses. The response to PFHpS (perfluoroheptanesulfonic acid) was similar to the PFOA pattern at the lower treatment dose. Based on results of transcription factor binding sites analyses, we propose that downregulation of pathways of lipid metabolism by longer chain PFAS may be due to inhibitory interactions of PPARD on genes controlled by PPARA and PPARG. In conclusion, our transcriptomic analysis indicates that the biological MOAs of PFAS compounds differ according to chain length and dose, and that risk assessments for PFAS should consider these differences in biological MOAs when evaluating mixtures of these compounds.
Collapse
Affiliation(s)
- A Rasim Barutcu
- ScitoVation LLC, Research Triangle Park, Suite 146, NC, USA.
| | | | | |
Collapse
|
69
|
George AJ, Birnbaum LS. Dioxins vs. PFAS: Science and Policy Challenges. ENVIRONMENTAL HEALTH PERSPECTIVES 2024; 132:85003. [PMID: 39133093 PMCID: PMC11318569 DOI: 10.1289/ehp14449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 06/05/2024] [Accepted: 07/24/2024] [Indexed: 08/13/2024]
Abstract
BACKGROUND Dioxin-like chemicals are a group of ubiquitous environmental toxicants that received intense attention in the last two decades of the 20th century. Through extensive mechanistic research and validation, the global community has agreed upon a regulatory strategy for these chemicals that centers on their common additive activation of a single receptor. Applying these regulations has led to decreased exposure in most populations studied. As dioxin-like chemicals moved out of the limelight, research and media attention has turned to other concerning contaminants, including per- and polyfluoroalkyl substances (PFAS). During the 20th century, PFAS were also being quietly emitted into the environment, but only in the last 20 years have we realized the serious threat they pose to health. There is active debate about how to appropriately classify and regulate the thousands of known PFAS and finding a solution for these "forever chemicals" is of the utmost urgency. OBJECTIVES Here, we compare important features of dioxin-like chemicals and PFAS, including the history, mechanism of action, and effective upstream regulatory strategies, with the objective of gleaning insight from the past to improve strategies for addressing PFAS. DISCUSSION The differences between these two chemical classes means that regulatory strategies for dioxin-like chemicals will not be appropriate for PFAS. PFAS exert toxicity by both receptor-based and nonreceptor-based mechanisms, which complicates mixtures evaluation and stymies efforts to develop inexpensive assays that accurately capture toxicity. Furthermore, dioxin-like chemicals were unwanted byproducts, but PFAS are useful and valuable, which has led to intense resistance against efforts to restrict their production. Nonetheless, useful lessons can be drawn from dioxin-like chemicals and applied to PFAS, including eliminating nonessential production of new PFAS and proactive investment in environmental remediation to address their extraordinarily long environmental persistence. https://doi.org/10.1289/EHP14449.
Collapse
Affiliation(s)
- Alex J. George
- Integrated Toxicology and Environmental Health Program, Duke University, Durham, North Carolina, USA
- Nicholas School of the Environment, Duke University, Durham, North Carolina, USA
| | - Linda S. Birnbaum
- Nicholas School of the Environment, Duke University, Durham, North Carolina, USA
| |
Collapse
|
70
|
Kashobwe L, Sadrabadi F, Brunken L, Coelho ACMF, Sandanger TM, Braeuning A, Buhrke T, Öberg M, Hamers T, Leonards PEG. Legacy and alternative per- and polyfluoroalkyl substances (PFAS) alter the lipid profile of HepaRG cells. Toxicology 2024; 506:153862. [PMID: 38866127 DOI: 10.1016/j.tox.2024.153862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 06/07/2024] [Accepted: 06/08/2024] [Indexed: 06/14/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are synthetic chemicals used in various industrial and consumer products. They have gained attention due to their ubiquitous occurrence in the environment and potential for adverse effects on human health, often linked to immune suppression, hepatotoxicity, and altered cholesterol metabolism. This study aimed to explore the impact of ten individual PFAS, 3 H-perfluoro-3-[(3-methoxypropoxy) propanoic acid] (PMPP/Adona), ammonium perfluoro-(2-methyl-3-oxahexanoate) (HFPO-DA/GenX), perfluorobutanoic acid (PFBA), perfluorobutanesulfonic acid (PFBS), perfluorodecanoic acid (PFDA), perfluorohexanoic acid (PFHxA), perfluorohexanesulfonate (PFHxS), perfluorononanoic acid (PFNA), perfluorooctanoic acid (PFOA), and perfluorooctanesulfonic acid (PFOS) on the lipid metabolism in human hepatocyte-like cells (HepaRG). These cells were exposed to different concentrations of PFAS ranging from 10 µM to 5000 µM. Lipids were extracted and analyzed using liquid chromatography coupled with mass spectrometry (LC- MS-QTOF). PFOS at 10 µM and PFOA at 25 µM increased the levels of ceramide (Cer), diacylglycerol (DAG), N-acylethanolamine (NAE), phosphatidylcholine (PC), and triacylglycerol (TAG) lipids, while PMPP/Adona, HFPO-DA/GenX, PFBA, PFBS, PFHxA, and PFHxS decreased the levels of these lipids. Furthermore, PFOA and PFOS markedly reduced the levels of palmitic acid (FA 16.0). The present study shows distinct concentration-dependent effects of PFAS on various lipid species, shedding light on the implications of PFAS for essential cellular functions. Our study revealed that the investigated legacy PFAS (PFOS, PFOA, PFBA, PFDA, PFHxA, PFHxS, and PFNA) and alternative PFAS (PMPP/Adona, HFPO-DA/GenX and PFBS) can potentially disrupt lipid homeostasis and metabolism in hepatic cells. This research offers a comprehensive insight into the impacts of legacy and alternative PFAS on lipid composition in HepaRG cells.
Collapse
Affiliation(s)
- Lackson Kashobwe
- Vrije Universiteit Amsterdam, Amsterdam Institute for Life and Environment (A-LIFE), De Boelelaan 1105, Amsterdam, Netherlands
| | - Faezeh Sadrabadi
- Department of Food Safety, German Federal Institute for Risk Assessment, Berlin, Germany
| | - Lars Brunken
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Ana Carolina M F Coelho
- Department of Community Medicine, Faculty of Health Sciences, UiT - The Arctic University of Norway, Tromsø, Norway
| | - Torkjel M Sandanger
- Department of Community Medicine, Faculty of Health Sciences, UiT - The Arctic University of Norway, Tromsø, Norway
| | - Albert Braeuning
- Department of Food Safety, German Federal Institute for Risk Assessment, Berlin, Germany
| | - Thorsten Buhrke
- Department of Food Safety, German Federal Institute for Risk Assessment, Berlin, Germany
| | - Mattias Öberg
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Timo Hamers
- Vrije Universiteit Amsterdam, Amsterdam Institute for Life and Environment (A-LIFE), De Boelelaan 1105, Amsterdam, Netherlands
| | - Pim E G Leonards
- Vrije Universiteit Amsterdam, Amsterdam Institute for Life and Environment (A-LIFE), De Boelelaan 1105, Amsterdam, Netherlands.
| |
Collapse
|
71
|
Vujic E, Ferguson SS, Brouwer KLR. Effects of PFAS on human liver transporters: implications for health outcomes. Toxicol Sci 2024; 200:213-227. [PMID: 38724241 DOI: 10.1093/toxsci/kfae061] [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] [Indexed: 07/30/2024] Open
Abstract
Per- and polyfluoroalkyl substances (PFAS) have become internationally recognized over the past three decades as persistent organic pollutants used in the production of various consumer and industrial goods. Research efforts continue to gauge the risk that historically used, and newly produced, PFAS may cause to human health. Numerous studies report toxic effects of PFAS on the human liver as well as increased serum cholesterol levels in adults. A major concern with PFAS, also dubbed "forever chemicals," is that they accumulate in the liver and kidney and persist in serum. The mechanisms responsible for their disposition and excretion in humans are poorly understood. A better understanding of the interaction of PFAS with liver transporters, as it pertains to the disposition of PFAS and other xenobiotics, could provide mechanistic insight into human health effects and guide efforts toward risk assessment of compounds in development. This review summarizes the current state of the literature on the emerging relationships (eg, substrates, inhibitors, modulators of gene expression) between PFAS and specific hepatic transporters. The adaptive and toxicological responses of hepatocytes to PFAS that reveal linkages to pathologies and epidemiological findings are highlighted. The evidence suggests that our understanding of the molecular landscape of PFAS must improve to determine their impact on the expression and function of hepatocyte transporters that play a key role in PFAS or other xenobiotic disposition. From here, we can assess what role these changes may have in documented human health outcomes.
Collapse
Affiliation(s)
- Ena Vujic
- Curriculum in Toxicology & Environmental Medicine, School of Medicine, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Stephen S Ferguson
- Division of Translational Toxicology, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, USA
| | - Kim L R Brouwer
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Curriculum in Toxicology & Environmental Medicine, School of Medicine, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| |
Collapse
|
72
|
Roy S, Moran J, Danasekaran K, O’Brien K, Dakshanamurthy S. Large-Scale Screening of Per- and Polyfluoroalkyl Substance Binding Interactions and Their Mixtures with Nuclear Receptors. Int J Mol Sci 2024; 25:8241. [PMID: 39125814 PMCID: PMC11312074 DOI: 10.3390/ijms25158241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2024] [Revised: 07/26/2024] [Accepted: 07/26/2024] [Indexed: 08/12/2024] Open
Abstract
Despite their significant impact, comprehensive screenings and detailed analyses of per- and polyfluoroalkyl substance (PFAS) binding strengths at the orthosteric and allosteric sites of NRs are currently lacking. This study addresses this gap by focusing on the binding interaction analysis of both common and uncommon PFAS with the nuclear receptors (NRs) vitamin D receptor (VDR), peroxisome proliferator-activated receptor gamma (PPARγ), pregnane X receptor (PXR), and estrogen receptor alpha (ERα). Advanced docking simulations were used to screen 9507 PFAS chemicals at the orthosteric and allosteric sites of PPARγ, PXR, VDR, and ERα. All receptors exhibited strong binding interactions at the orthosteric and allosteric site with a significant number of PFAS. We verified the accuracy of the docking protocol through multiple docking controls and validations. A mixture modeling analysis indicates that PFAS can bind in various combinations with themselves and endogenous ligands simultaneously, to disrupt the endocrine system and cause carcinogenic responses. These findings reveal that PFAS can interfere with nuclear receptor activity by displacing endogenous or native ligands by binding to the orthosteric and allosteric sites. The purpose of this study is to explore the mechanisms through which PFAS exert their endocrine-disrupting effects, potentially leading to more targeted therapeutic strategies. Importantly, this study is the first to explore the binding of PFAS at allosteric sites and to model PFAS mixtures at nuclear receptors. Given the high concentration and persistence of PFAS in humans, this study further emphasizes the urgent need for further research into the carcinogenic mechanisms of PFAS and the development of therapeutic strategies that target nuclear receptors.
Collapse
Affiliation(s)
- Saptarshi Roy
- College of Humanities and Sciences, Virginia Commonwealth University, 907 Floyd Ave, Richmond, VA 23284, USA
| | - James Moran
- College of Arts & Sciences, Georgetown University, 3700 O St NW, Washington, DC 20057, USA
| | - Keerthana Danasekaran
- College of Arts and Sciences, University of Rochester, 500 Joseph C. Wilson Blvd, Rochester, NY 14627, USA
| | - Kate O’Brien
- Davidson College, 405 N Main St, Davidson, NC 28035, USA
| | - Sivanesan Dakshanamurthy
- Lombardi Comprehensive Cancer Center, Georgetown University, 3700 O St NW, Washington, DC 20057, USA
| |
Collapse
|
73
|
Boatman AK, Chappel JR, Polera ME, Dodds JN, Belcher SM, Baker ES. Assessing Per- and Polyfluoroalkyl Substances in Fish Fillet Using Non-Targeted Analyses. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024. [PMID: 39066709 DOI: 10.1021/acs.est.4c04299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/30/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are a class of thousands of man-made chemicals that are persistent and highly stable in the environment. Fish consumption has been identified as a key route of PFAS exposure for humans. However, routine fish monitoring targets only a handful of PFAS, and non-targeted analyses have largely only evaluated fish from heavily PFAS-impacted waters. Here, we evaluated PFAS in fish fillets from recreational and drinking water sources in central North Carolina to assess whether PFAS are present in these fillets that would not be detected by conventional targeted methods. We used liquid chromatography, ion mobility spectrometry, and mass spectrometry (LC-IMS-MS) to collect full scan feature data, performed suspect screening using an in-house library of 100 PFAS for high confidence feature identification, searched for additional PFAS features using non-targeted data analyses, and quantified perfluorooctanesulfonic acid (PFOS) in the fillet samples. A total of 36 PFAS were detected in the fish fillets, including 19 that would not be detected using common targeted methods, with a minimum of 6 and a maximum of 22 in individual fish. Median fillet PFOS levels were concerningly high at 11.6 to 42.3 ppb, and no significant correlation between PFOS levels and number of PFAS per fish was observed. Future PFAS monitoring in this region should target more of these 36 PFAS, and other regions not considered heavily PFAS contaminated should consider incorporating non-targeted analyses into ongoing fish monitoring studies.
Collapse
Affiliation(s)
- Anna K Boatman
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27514, United States
| | - Jessie R Chappel
- Department of Bioinformatics, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Madison E Polera
- Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - James N Dodds
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27514, United States
| | - Scott M Belcher
- Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Erin S Baker
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27514, United States
| |
Collapse
|
74
|
Yi Y, Feng Y, Shi Y, Xiao J, Liu M, Wang K. Per- and Polyfluoroalkyl Substances (PFASs) and Their Potential Effects on Female Reproductive Diseases. TOXICS 2024; 12:539. [PMID: 39195641 PMCID: PMC11358978 DOI: 10.3390/toxics12080539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Revised: 07/18/2024] [Accepted: 07/24/2024] [Indexed: 08/29/2024]
Abstract
Per- and polyfluoroalkyl substances (PFASs) are a class of anthropogenic organic compounds widely present in the natural and human living environments. These emerging persistent pollutants can enter the human body through multiple channels, posing risks to human health. In particular, exposure to PFASs in women may cause a series of reproductive health hazards and infertility. Based on a review of the existing literature, this study preliminarily summarizes the effects of PFAS exposure on the occurrence and development of female reproductive endocrine diseases, such as polycystic ovary syndrome (PCOS), endometriosis, primary ovarian insufficiency (POI), and diminished ovarian reserve (DOR). Furthermore, we outline the relevant mechanisms through which PFASs interfere with the physiological function of the female ovary and finally highlight the role played by nutrients in reducing the reproductive health hazards caused by PFASs. It is worth noting that the physiological mechanisms of PFASs in the above diseases are still unclear. Therefore, it is necessary to further study the molecular mechanisms of PFASs in female reproductive diseases and the role of nutrients in this process.
Collapse
Affiliation(s)
- Yuqing Yi
- Department of Clinical Nutrition, Second Affiliated Hospital of Dalian Medical University, Dalian 116027, China; (Y.Y.); (Y.F.); (Y.S.); (J.X.); (M.L.)
- Department of Nutrition and Food Hygiene, School of Public Health, Dalian Medical University, Dalian 116044, China
| | - Yang Feng
- Department of Clinical Nutrition, Second Affiliated Hospital of Dalian Medical University, Dalian 116027, China; (Y.Y.); (Y.F.); (Y.S.); (J.X.); (M.L.)
- Department of Nutrition and Food Hygiene, School of Public Health, Dalian Medical University, Dalian 116044, China
| | - Yuechen Shi
- Department of Clinical Nutrition, Second Affiliated Hospital of Dalian Medical University, Dalian 116027, China; (Y.Y.); (Y.F.); (Y.S.); (J.X.); (M.L.)
- Department of Nutrition and Food Hygiene, School of Public Health, Dalian Medical University, Dalian 116044, China
| | - Jiaming Xiao
- Department of Clinical Nutrition, Second Affiliated Hospital of Dalian Medical University, Dalian 116027, China; (Y.Y.); (Y.F.); (Y.S.); (J.X.); (M.L.)
- Department of Nutrition and Food Hygiene, School of Public Health, Dalian Medical University, Dalian 116044, China
| | - Ming Liu
- Department of Clinical Nutrition, Second Affiliated Hospital of Dalian Medical University, Dalian 116027, China; (Y.Y.); (Y.F.); (Y.S.); (J.X.); (M.L.)
- Department of Nutrition and Food Hygiene, School of Public Health, Dalian Medical University, Dalian 116044, China
| | - Ke Wang
- Department of Clinical Nutrition, Second Affiliated Hospital of Dalian Medical University, Dalian 116027, China; (Y.Y.); (Y.F.); (Y.S.); (J.X.); (M.L.)
| |
Collapse
|
75
|
Gonzalez de Vega R, Plassmann M, Clases D, Zangger K, Müller V, Rosenberg E, Reimann A, Skedung L, Benskin JP, Feldmann J. A multi-platform approach for the comprehensive analysis of per- and polyfluoroalkyl substances (PFAS) and fluorine mass balance in commercial ski wax products. Anal Chim Acta 2024; 1314:342754. [PMID: 38876512 DOI: 10.1016/j.aca.2024.342754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 04/21/2024] [Accepted: 05/20/2024] [Indexed: 06/16/2024]
Abstract
The unique properties of per- and polyfluoroalkyl substances (PFAS) have led to their extensive use in consumer products, including ski wax. Based on the risks associated with PFAS, and to align with PFAS regulations, the international ski federation (FIS) implemented a ban on products containing "C8 fluorocarbons/perfluorooctanoate (PFOA)" at all FIS events from the 2021/2022 season, leading manufactures to shift their formulations towards short-chain PFAS chemistries. To date, most studies characterising PFAS in ski waxes have measured a suite of individual substances using targeted analytical approaches. However, the fraction of total fluorine (TF) in the wax accounted for by these substances remains unclear. In this study, we sought to address this question by applying a multi-platform, fluorine mass balance approach to a total of 10 commercially available ski wax products. Analysis of TF by combustion ion chromatography (CIC) revealed concentrations of 1040-51700 μg F g-1 for the different fluorinated waxes. In comparison, extractable organic fluorine (EOF) determined in methanol extracts by CIC (and later confirmed by inductively-coupled plasma-mass spectrometry and 19F- nuclear magnetic resonance spectroscopy) ranged from 92 to 3160 μg g-1, accounting for only 3-8.8 % of total fluorine (TF). Further characterisation of extracts by cyclic ion mobility-mass spectrometry (IMS) revealed 15 individual PFAS with perfluoroalkyl carboxylic acid concentrations up to 33 μg F g-1, and 3 products exceeding the regulatory limit for PFOA (0.025 μg g-1) by a factor of up to 100. The sum of all PFAS accounted for only 0.01-1.0 % of EOF, implying a high percentage of unidentified PFAS, thus, pyrolysis gas chromatography-mass spectrometry was used to provide evidence of the nature of the non-extractable fluorine present in the ski wax products.
Collapse
Affiliation(s)
| | - Merle Plassmann
- Department of Environmental Science, Stockholm University, Stockholm, Sweden
| | - David Clases
- Analytical Chemistry, Institute of Chemistry, University of Graz, Graz, Austria
| | - Klaus Zangger
- Analytical Chemistry, Institute of Chemistry, University of Graz, Graz, Austria
| | - Viktoria Müller
- Analytical Chemistry, Institute of Chemistry, University of Graz, Graz, Austria; The James Hutton Institute, Aberdeen, United Kingdom
| | - Erwin Rosenberg
- Institute of Chemical Technologies and Analytics, TU Wien, Wien, Austria
| | - Anders Reimann
- Department Materials and Surface Design, RISE Research Institutes of Sweden, Stockholm, Sweden
| | - Lisa Skedung
- Department Materials and Surface Design, RISE Research Institutes of Sweden, Stockholm, Sweden
| | - Jonathan P Benskin
- Department of Environmental Science, Stockholm University, Stockholm, Sweden
| | - Jörg Feldmann
- Analytical Chemistry, Institute of Chemistry, University of Graz, Graz, Austria
| |
Collapse
|
76
|
Zheng X, Pan Y, Qu Y, Ji S, Wang J, Li Z, Zhao F, Wu B, Xie L, Li Y, Song H, Hu X, Qiu Y, Zhang Z, Zhang W, Yang Y, Cai J, Zhu Y, Zhu Y, Cao Z, Ji JS, Lv Y, Dai J, Shi X. Associations of Serum Per- and Polyfluoroalkyl Substances with Hyperuricemia in Adults: A Nationwide Cross-Sectional Study. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:12875-12887. [PMID: 38980177 DOI: 10.1021/acs.est.3c11095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
There has been widespread concern about the health hazards of per- and polyfluoroalkyl substances (PFAS), which may be the risk factor for hyperuricemia with evidence still insufficient in the general population in China. Here, we conducted a nationwide study involving 9,580 adults aged 18 years or older from 2017 to 2018, measured serum concentrations of uric acid and PFAS (PFOA, PFOS, 6:2 Cl-PFESA, PFNA, PFHxS) in participants, to assess the associations of individual PFAS with hyperuricemia, and estimated a joint effect of PFAS mixtures. We found positive associations of higher serum PFAS with elevated odds of hyperuricemia in Chinese adults, with the greatest contribution from PFOA (69.37%). The nonmonotonic dose-response (NMDR) relationships were observed for 6:2 Cl-PFESA and PFHxS with hyperuricemia. Participants with less marine fish consumption, overweight, and obesity may be the sensitive groups to the effects of PFAS on hyperuricemia. We highlight the potential health hazards of legacy long-chain PFAS (PFOA) once again because of the higher weights of joint effects. This study also provides more evidence about the NMDR relationships in PFAS with hyperuricemia and emphasizes a theoretical basis for public health planning to reduce the health hazards of PFAS in sensitive groups.
Collapse
Affiliation(s)
- Xulin Zheng
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Yitao Pan
- State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yingli Qu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Saisai Ji
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Jinghua Wang
- State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zheng Li
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Feng Zhao
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Bing Wu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Linna Xie
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Yawei Li
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Haocan Song
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Xiaojian Hu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Yidan Qiu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Zheng Zhang
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Wenli Zhang
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Yanwei Yang
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Jiayi Cai
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Yuanduo Zhu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Ying Zhu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Zhaojin Cao
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - John S Ji
- Vanke School of Public Health, Tsinghua University, Beijing 100084, China
| | - Yuebin Lv
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Jiayin Dai
- State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Xiaoming Shi
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| |
Collapse
|
77
|
Cioni L, Nikiforov V, Benskin JP, Coêlho ACM, Dudášová S, Lauria MZ, Lechtenfeld OJ, Plassmann MM, Reemtsma T, Sandanger TM, Herzke D. Combining Advanced Analytical Methodologies to Uncover Suspect PFAS and Fluorinated Pharmaceutical Contributions to Extractable Organic Fluorine in Human Serum (Tromsø Study). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:12943-12953. [PMID: 38985529 PMCID: PMC11271008 DOI: 10.1021/acs.est.4c03758] [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: 04/16/2024] [Revised: 06/27/2024] [Accepted: 06/27/2024] [Indexed: 07/12/2024]
Abstract
A growing number of studies have reported that routinely monitored per- and polyfluoroalkyl substances (PFAS) are not sufficient to explain the extractable organic fluorine (EOF) measured in human blood. In this study, we address this gap by screening pooled human serum collected over 3 decades (1986-2015) in Tromsø (Norway) for >5000 PFAS and >300 fluorinated pharmaceuticals. We combined multiple analytical techniques (direct infusion Fourier transform ion cyclotron resonance mass spectrometry, liquid chromatography-Orbitrap-high-resolution mass spectrometry, and total oxidizable precursors assay) in a three-step suspect screening process which aimed at unequivocal suspect identification. This approach uncovered the presence of one PFAS and eight fluorinated pharmaceuticals (including some metabolites) in human serum. While the PFAS suspect only accounted for 2-4% of the EOF, fluorinated pharmaceuticals accounted for 0-63% of the EOF, and their contribution increased in recent years. Although fluorinated pharmaceuticals often contain only 1-3 fluorine atoms, our results indicate that they can contribute significantly to the EOF. Indeed, the contribution from fluorinated pharmaceuticals allowed us to close the organofluorine mass balance in pooled serum from 2015, indicating a good understanding of organofluorine compounds in humans. However, a portion of the EOF in human serum from 1986 and 2007 still remained unexplained.
Collapse
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
| | | | - Jonathan P. Benskin
- Department
of Environmental Science, Stockholm University, Stockholm SE-10691, Sweden
| | | | - Silvia Dudášová
- Helmholtz
Centre for Environmental Research—UFZ, Leipzig DE-04103, Germany
| | - Melanie Z. Lauria
- Department
of Environmental Science, Stockholm University, Stockholm SE-10691, Sweden
| | | | - Merle M. Plassmann
- Department
of Environmental Science, Stockholm University, Stockholm SE-10691, Sweden
| | - Thorsten Reemtsma
- Helmholtz
Centre for Environmental Research—UFZ, Leipzig DE-04103, Germany
| | - 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
| |
Collapse
|
78
|
Rericha Y, St. Mary L, Truong L, McClure R, Martin JK, Leonard SW, Thunga P, Simonich MT, Waters KM, Field JA, Tanguay RL. Diverse PFAS produce unique transcriptomic changes linked to developmental toxicity in zebrafish. FRONTIERS IN TOXICOLOGY 2024; 6:1425537. [PMID: 39104825 PMCID: PMC11298493 DOI: 10.3389/ftox.2024.1425537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Accepted: 06/21/2024] [Indexed: 08/07/2024] Open
Abstract
Per- and polyfluoroalkyl substances (PFAS) are a widespread and persistent class of contaminants posing significant environmental and human health concerns. Comprehensive understanding of the modes of action underlying toxicity among structurally diverse PFAS is mostly lacking. To address this need, we recently reported on our application of developing zebrafish to evaluate a large library of PFAS for developmental toxicity. In the present study, we prioritized 15 bioactive PFAS that induced significant morphological effects and performed RNA-sequencing to characterize early transcriptional responses at a single timepoint (48 h post fertilization) after early developmental exposures (8 h post fertilization). Internal concentrations of 5 of the 15 PFAS were measured from pooled whole fish samples across multiple timepoints between 24-120 h post fertilization, and additional temporal transcriptomics at several timepoints (48-96 h post fertilization) were conducted for Nafion byproduct 2. A broad range of differentially expressed gene counts were identified across the PFAS exposures. Most PFAS that elicited robust transcriptomic changes affected biological processes of the brain and nervous system development. While PFAS disrupted unique processes, we also found that similarities in some functional head groups of PFAS were associated with the disruption in expression of similar gene sets. Body burdens after early developmental exposures to select sulfonic acid PFAS, including Nafion byproduct 2, increased from the 24-96 h post fertilization sampling timepoints and were greater than those of sulfonamide PFAS of similar chain lengths. In parallel, the Nafion byproduct 2-induced transcriptional responses increased between 48 and 96 h post fertilization. PFAS characteristics based on toxicity, transcriptomic effects, and modes of action will contribute to further prioritization of PFAS structures for testing and informed hazard assessment.
Collapse
Affiliation(s)
- Yvonne Rericha
- Environmental and Molecular Toxicology Department, College of Agricultural Sciences, Oregon State University, Corvallis, OR, United States
- Sinnhuber Aquatic Research Laboratory, Oregon State University, Corvallis, OR, United States
| | - Lindsey St. Mary
- Environmental and Molecular Toxicology Department, College of Agricultural Sciences, Oregon State University, Corvallis, OR, United States
- Sinnhuber Aquatic Research Laboratory, Oregon State University, Corvallis, OR, United States
| | - Lisa Truong
- Environmental and Molecular Toxicology Department, College of Agricultural Sciences, Oregon State University, Corvallis, OR, United States
- Sinnhuber Aquatic Research Laboratory, Oregon State University, Corvallis, OR, United States
| | - Ryan McClure
- Pacific Northwest National Laboratory, Biological Sciences Division, Richland, WA, United States
| | - J. Kainalu Martin
- Environmental and Molecular Toxicology Department, College of Agricultural Sciences, Oregon State University, Corvallis, OR, United States
| | - Scott W. Leonard
- Environmental and Molecular Toxicology Department, College of Agricultural Sciences, Oregon State University, Corvallis, OR, United States
| | - Preethi Thunga
- Biological Sciences Department, College of Sciences, North Carolina State University, Raleigh, NC, United States
| | - Michael T. Simonich
- Sinnhuber Aquatic Research Laboratory, Oregon State University, Corvallis, OR, United States
| | - Katrina M. Waters
- Environmental and Molecular Toxicology Department, College of Agricultural Sciences, Oregon State University, Corvallis, OR, United States
- Pacific Northwest National Laboratory, Biological Sciences Division, Richland, WA, United States
| | - Jennifer A. Field
- Environmental and Molecular Toxicology Department, College of Agricultural Sciences, Oregon State University, Corvallis, OR, United States
| | - Robyn L. Tanguay
- Environmental and Molecular Toxicology Department, College of Agricultural Sciences, Oregon State University, Corvallis, OR, United States
- Sinnhuber Aquatic Research Laboratory, Oregon State University, Corvallis, OR, United States
| |
Collapse
|
79
|
Savvidou P, Dotro G, Campo P, Coulon F, Lyu T. Constructed wetlands as nature-based solutions in managing per-and poly-fluoroalkyl substances (PFAS): Evidence, mechanisms, and modelling. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 934:173237. [PMID: 38761940 DOI: 10.1016/j.scitotenv.2024.173237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 05/07/2024] [Accepted: 05/12/2024] [Indexed: 05/20/2024]
Abstract
Per- and poly-fluoroalkyl substances (PFAS) have emerged as newly regulated micropollutants, characterised by extreme recalcitrance and environmental toxicity. Constructed wetlands (CWs), as a nature-based solution, have gained widespread application in sustainable water and wastewater treatment and offer multiple environmental and societal benefits. Despite CWs potential, knowledge gaps persist in their PFAS removal capacities, associated mechanisms, and modelling of PFAS fate. This study carried out a systematic literature review, supplemented by unpublished experimental data, demonstrating the promise of CWs for PFAS removal from the influents of varying sources and characteristics. Median removal performances of 64, 46, and 0 % were observed in five free water surface (FWS), four horizontal subsurface flow (HF), and 18 vertical flow (VF) wetlands, respectively. PFAS adsorption by the substrate or plant root/rhizosphere was deemed as a key removal mechanism. Nevertheless, the available dataset resulted unsuitable for a quantitative analysis. Data-driven models, including multiple regression models and machine learning-based Artificial Neural Networks (ANN), were employed to predict PFAS removal. These models showed better predictive performance compared to various mechanistic models, which include two adsorption isotherms. The results affirmed that artificial intelligence is an efficient tool for modelling the removal of emerging contaminants with limited knowledge of chemical properties. In summary, this study consolidated evidence supporting the use of CWs for mitigating new legacy PFAS contaminants. Further research, especially long-term monitoring of full-scale CWs treating real wastewater, is crucial to obtain additional data for model development and validation.
Collapse
Affiliation(s)
- Pinelopi Savvidou
- School of Water, Energy and Environment, Cranfield University, College Road, Cranfield, Bedfordshire MK43 0AL, United Kingdom
| | - Gabriela Dotro
- School of Water, Energy and Environment, Cranfield University, College Road, Cranfield, Bedfordshire MK43 0AL, United Kingdom
| | - Pablo Campo
- School of Water, Energy and Environment, Cranfield University, College Road, Cranfield, Bedfordshire MK43 0AL, United Kingdom
| | - Frederic Coulon
- School of Water, Energy and Environment, Cranfield University, College Road, Cranfield, Bedfordshire MK43 0AL, United Kingdom
| | - Tao Lyu
- School of Water, Energy and Environment, Cranfield University, College Road, Cranfield, Bedfordshire MK43 0AL, United Kingdom.
| |
Collapse
|
80
|
Zhou R, Peng J, Zhang L, Sun Y, Yan J, Jiang H. Association between the dietary inflammatory index and serum perfluoroalkyl and polyfluoroalkyl substance concentrations: evidence from NANHES 2007-2018. Food Funct 2024; 15:7375-7386. [PMID: 37779497 DOI: 10.1039/d3fo01487h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
Diet is an important source of perfluoroalkyl and polyfluoroalkyl substance (PFAS) exposure, and the dietary inflammatory index (DII) is a tool used to assess the inflammatory potential of an individual's diet. However, limited research has explored the association between the DII and PFAS exposure in humans. This study is the first to analyze the association between the five PFASs and DII using the National Health and Nutrition Examination Survey (NHANES) 2007-2018 database. Additionally, we assessed the interaction between the DII and PFASs regarding oxidative stress and inflammatory markers, including alkaline phosphatase, albumin, neutrophil count, lymphocyte count, total bilirubin, and serum iron based on a previous study. A series of covariates were included in the analysis to reduce the confounding bias. The study included 7773 and 5933 participants based on the different models. The DII was significantly associated with serum perfluorooctanoic acid, perfluorononanoic acid, perfluorooctane sulfonic acid, and sum-PFAS. Some of the food parameters used to calculate the DII also showed associations with special PFAS serum concentrations. Specifically, dietary fiber, n-3 polyunsaturated fatty acids, energy intake, and vitamin D were associated with more than three PFASs. Higher DII levels in participants were linked to a more significant association between bilirubin (the interaction P-value is not significant), alkaline phosphatase, serum iron, neutrophil counts, and some PFASs. In conclusion, this study clarified the association between the three PFASs and DII, highlighting the diverse effects of PFASs on oxidative stress and inflammatory markers across different DII levels.
Collapse
Affiliation(s)
- Ren Zhou
- Department of Anesthesiology, The Ninth People's Hospital of Shanghai, Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, PR China.
| | - Jiali Peng
- Department of Anesthesiology, The Ninth People's Hospital of Shanghai, Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, PR China.
| | - Lei Zhang
- Department of Anesthesiology, The Ninth People's Hospital of Shanghai, Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, PR China.
| | - Yu Sun
- Department of Anesthesiology, The Ninth People's Hospital of Shanghai, Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, PR China.
| | - Jia Yan
- Department of Anesthesiology, The Ninth People's Hospital of Shanghai, Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, PR China.
| | - Hong Jiang
- Department of Anesthesiology, The Ninth People's Hospital of Shanghai, Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, PR China.
| |
Collapse
|
81
|
Grung M, Hjermann DØ, Rundberget T, Bæk K, Thomsen C, Knutsen HK, Haug LS. Low levels of per- and polyfluoroalkyl substances (PFAS) detected in drinking water in Norway, but elevated concentrations found near known sources. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 947:174550. [PMID: 39004364 DOI: 10.1016/j.scitotenv.2024.174550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 05/30/2024] [Accepted: 07/04/2024] [Indexed: 07/16/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are ubiquitous contaminants which are also found in drinking water. Concentration levels in drinking water vary widely and range from a very low contribution to total daily exposure for humans to being the major source of uptake of PFAS. PFAS concentrations in Norwegian drinking water has been rarely reported. We investigated concentrations of 31 PFAS in 164 water samples, representing both source water (i.e., before drinking water treatment) and finished drinking water. Samples were taken from 18 different water bodies across Norway. The 17 waterworks involved supply drinking water to 41 % of the Norwegian population. Only four of the waterworks utilised treatment involving activated carbon which was able to significantly reduce PFAS from the source water. Samples of source water from waterworks not employing activated carbon in treatment were therefore considered to represent drinking water with regards to PFAS (142 samples). All samples from one of the water bodies exceeded the environmental quality standard (EQS) for perfluorooctane sulfonic acid (PFOS) according to the water framework directive (0.65 ng/L). No concentrations exceeded the sum of (20) PFAS (100 ng/L) specified in the EU directive 2020/2184 for drinking water. Several EU countries have issued lower guidelines for the sum of the four PFAS that the European Food Safety Authority (EFSA) has established as the tolerable weekly intake (TWI) for PFOS, perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), and perfluorohexane sulfonic acid (PFHxS). Denmark and Sweden have guidelines specifying 2 and 4 ng/L for the sum of these PFAS. Only one of the 142 drinking water samples exceeded the Danish TWI and contained a sum of 6.6 ng/L PFAS. A population exposure model, for individuals drinking water from the investigated sources, showed that only 0.5 % of the population was receiving PFAS concentrations above the Danish limit of 2 ng/L.
Collapse
Affiliation(s)
- Merete Grung
- Norwegian Institute for Water Research (NIVA), Økernveien 94, 0579 Oslo, Norway.
| | - Dag Ø Hjermann
- Norwegian Institute for Water Research (NIVA), Økernveien 94, 0579 Oslo, Norway.
| | - Thomas Rundberget
- Norwegian Institute for Water Research (NIVA), Økernveien 94, 0579 Oslo, Norway.
| | - Kine Bæk
- Norwegian Institute for Water Research (NIVA), Økernveien 94, 0579 Oslo, Norway.
| | - Cathrine Thomsen
- Norwegian Institute of Public Health, Department of Food Safety, PO Box 222, Skøyen, 0213 Oslo, Norway; Norwegian Institute of Public Health, Centre for Sustainable Diets, PO Box 222, Skøyen, 0213 Oslo, Norway.
| | - Helle Katrine Knutsen
- Norwegian Institute of Public Health, Department of Food Safety, PO Box 222, Skøyen, 0213 Oslo, Norway; Norwegian Institute of Public Health, Centre for Sustainable Diets, PO Box 222, Skøyen, 0213 Oslo, Norway.
| | - Line Småstuen Haug
- Norwegian Institute of Public Health, Department of Food Safety, PO Box 222, Skøyen, 0213 Oslo, Norway; Norwegian Institute of Public Health, Centre for Sustainable Diets, PO Box 222, Skøyen, 0213 Oslo, Norway.
| |
Collapse
|
82
|
Britton KN, Judson RS, Hill BN, Jarema KA, Olin JK, Knapp BR, Lowery M, Feshuk M, Brown J, Padilla S. Using Zebrafish to Screen Developmental Toxicity of Per- and Polyfluoroalkyl Substances (PFAS). TOXICS 2024; 12:501. [PMID: 39058153 PMCID: PMC11281043 DOI: 10.3390/toxics12070501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 07/01/2024] [Accepted: 07/02/2024] [Indexed: 07/28/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are found in many consumer and industrial products. While some PFAS, notably perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS), are developmentally toxic in mammals, the vast majority of PFAS have not been evaluated for developmental toxicity potential. A concentration-response study of 182 unique PFAS chemicals using the zebrafish medium-throughput, developmental vertebrate toxicity assay was conducted to investigate chemical structural identifiers for toxicity. Embryos were exposed to each PFAS compound (≤100 μM) beginning on the day of fertilization. At 6 days post-fertilization (dpf), two independent observers graded developmental landmarks for each larva (e.g., mortality, hatching, swim bladder inflation, edema, abnormal spine/tail, or craniofacial structure). Thirty percent of the PFAS were developmentally toxic, but there was no enrichment of any OECD structural category. PFOS was developmentally toxic (benchmark concentration [BMC] = 7.48 μM); however, other chemicals were more potent: perfluorooctanesulfonamide (PFOSA), N-methylperfluorooctane sulfonamide (N-MeFOSA), ((perfluorooctyl)ethyl)phosphonic acid, perfluoro-3,6,9-trioxatridecanoic acid, and perfluorohexane sulfonamide. The developmental toxicity profile for these more potent PFAS is largely unexplored in mammals and other species. Based on these zebrafish developmental toxicity results, additional screening may be warranted to understand the toxicity profile of these chemicals in other species.
Collapse
Affiliation(s)
- Katy N. Britton
- Oak Ridge Associated Universities Research Participation Program Hosted by EPA, Center for Computational Toxicology and Exposure, Biomolecular and Computational Toxicology Division, Rapid Assay Development Branch, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA
| | - Richard S. Judson
- Center for Computational Toxicology and Exposure, Computational Toxicology and Bioinformatics Branch, Research Triangle Park, NC 27711, USA;
| | - Bridgett N. Hill
- Oak Ridge Institute for Science and Education Research Participation Program Hosted by EPA, Center for Computational Toxicology and Exposure, Biomolecular and Computational Toxicology Division, Rapid Assay Development Branch, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA; (B.N.H.); (B.R.K.)
| | - Kimberly A. Jarema
- Center for Public Health and Environmental Assessment, Immediate Office, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA;
| | - Jeanene K. Olin
- Center for Computational Toxicology and Exposure, Biomolecular and Computational Toxicology Division, Rapid Assay Development Branch, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA; (J.K.O.); (M.L.)
| | - Bridget R. Knapp
- Oak Ridge Institute for Science and Education Research Participation Program Hosted by EPA, Center for Computational Toxicology and Exposure, Biomolecular and Computational Toxicology Division, Rapid Assay Development Branch, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA; (B.N.H.); (B.R.K.)
| | - Morgan Lowery
- Center for Computational Toxicology and Exposure, Biomolecular and Computational Toxicology Division, Rapid Assay Development Branch, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA; (J.K.O.); (M.L.)
| | - Madison Feshuk
- Center for Computational Toxicology and Exposure, Scientific Computing and Data Curation Division, Data Extraction and Quality Evaluation Branch, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA;
| | - Jason Brown
- Center for Computational Toxicology and Exposure, Scientific Computing and Data Curation Division, Application Development Branch, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA;
| | - Stephanie Padilla
- Center for Computational Toxicology and Exposure, Biomolecular and Computational Toxicology Division, Rapid Assay Development Branch, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA; (J.K.O.); (M.L.)
| |
Collapse
|
83
|
Wang Y, Gui J, Howe CG, Emond JA, Criswell RL, Gallagher LG, Huset CA, Peterson LA, Botelho JC, Calafat AM, Christensen B, Karagas MR, Romano ME. Association of diet with per- and polyfluoroalkyl substances in plasma and human milk in the New Hampshire Birth Cohort Study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 933:173157. [PMID: 38740209 PMCID: PMC11247473 DOI: 10.1016/j.scitotenv.2024.173157] [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: 04/08/2024] [Revised: 05/09/2024] [Accepted: 05/09/2024] [Indexed: 05/16/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are related to various adverse health outcomes, and food is a common source of PFAS exposure. Dietary sources of PFAS have not been adequately explored among U.S. pregnant individuals. We examined associations of dietary factors during pregnancy with PFAS concentrations in maternal plasma and human milk in the New Hampshire Birth Cohort Study. PFAS concentrations, including perfluorohexane sulfonate (PFHxS), perfluorooctane sulfonate (PFOS), perfluorooctanoate (PFOA), perfluorononanoate (PFNA), and perfluorodecanoate (PFDA), were measured in maternal plasma collected at ∼28 gestational weeks and human milk collected at ∼6 postpartum weeks. Sociodemographic, lifestyle and reproductive factors were collected from prenatal questionnaires and diet from food frequency questionnaires at ∼28 gestational weeks. We used adaptive elastic net (AENET) to identify important dietary variables for PFAS concentrations. We used multivariable linear regression to assess associations of dietary variables selected by AENET models with PFAS concentrations. Models were adjusted for sociodemographic, lifestyle, and reproductive factors, as well as gestational week of blood sample collection (plasma PFAS), postpartum week of milk sample collection (milk PFAS), and enrollment year. A higher intake of fish/seafood, eggs, coffee, or white rice during pregnancy was associated with higher plasma or milk PFAS concentrations. For example, every 1 standard deviation (SD) servings/day increase in egg intake during pregnancy was associated with 4.4 % (95 % CI: 0.6, 8.4), 3.3 % (0.1, 6.7), and 10.3 % (5.6, 15.2) higher plasma PFOS, PFOA, and PFDA concentrations respectively. Similarly, every 1 SD servings/day increase in white rice intake during pregnancy was associated with 7.5 % (95 % CI: -0.2, 15.8) and 12.4 % (4.8, 20.5) greater milk PFOS and PFOA concentrations, respectively. Our study suggests that certain dietary factors during pregnancy may contribute to higher PFAS concentrations in maternal plasma and human milk, which could inform interventions to reduce PFAS exposure for both birthing people and offspring.
Collapse
Affiliation(s)
- Yuting Wang
- Department of Epidemiology, The Geisel School of Medicine at Dartmouth, Lebanon, NH 03755, USA.
| | - Jiang Gui
- Department of Biomedical Data Science, The Geisel School of Medicine at Dartmouth, Lebanon, NH 03755, USA
| | - Caitlin G Howe
- Department of Epidemiology, The Geisel School of Medicine at Dartmouth, Lebanon, NH 03755, USA
| | - Jennifer A Emond
- Department of Biomedical Data Science, The Geisel School of Medicine at Dartmouth, Lebanon, NH 03755, USA
| | - Rachel L Criswell
- Department of Epidemiology, The Geisel School of Medicine at Dartmouth, Lebanon, NH 03755, USA; Skowhegan Family Medicine, Redington-Fairview General Hospital, Skowhegan, ME 04976, USA
| | - Lisa G Gallagher
- Department of Epidemiology, The Geisel School of Medicine at Dartmouth, Lebanon, NH 03755, USA
| | - Carin A Huset
- Minnesota Department of Health, St. Paul, MN 55101, USA
| | - Lisa A Peterson
- Division of Environmental Health Sciences, University of Minnesota, Minneapolis, MN 55455, USA; Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
| | - Julianne Cook Botelho
- Division of Laboratory Sciences, Centers for Disease Control and Prevention, Atlanta, GA 30341, USA
| | - Antonia M Calafat
- Division of Laboratory Sciences, Centers for Disease Control and Prevention, Atlanta, GA 30341, USA
| | - Brock Christensen
- Department of Epidemiology, The Geisel School of Medicine at Dartmouth, Lebanon, NH 03755, USA
| | - Margaret R Karagas
- Department of Epidemiology, The Geisel School of Medicine at Dartmouth, Lebanon, NH 03755, USA
| | - Megan E Romano
- Department of Epidemiology, The Geisel School of Medicine at Dartmouth, Lebanon, NH 03755, USA
| |
Collapse
|
84
|
Zhu Y, Yang X, Song X, Jia Y, Zhang Y, Zhu L. Insights into the Enhanced Bioavailability of Per- and Polyfluoroalkyl Substances in Food Caused by Chronic Inflammatory Bowel Disease. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:11912-11922. [PMID: 38934536 DOI: 10.1021/acs.est.4c01511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
Understanding the bioavailability of per- and polyfluoroalkyl substances (PFAS) in food is essential for accurate human health risk assessment. Given the rising incidence of inflammatory bowel disease (IBD), this study aimed to investigate the impacts of IBD on the bioavailability of PFAS in food using mice models. The relative bioavailability (RBA) of PFAS was the highest in the chronic IBD mice (64.3-144%), followed by the healthy (60.8-133%) and acute IBD mice (41.5-121%), suggesting that chronic IBD enhanced the PFAS exposure risk. In vitro tests showed that the intestinal micelle stability increased as a result of reduced content of short-chain fatty acids, thus promoting the PFAS bioaccessibility in the digestive fluid of chronic IBD. Additionally, increased pathogenic and decreased beneficial bacteria in the gut of IBD groups facilitated the intestinal permeability, thus enhancing PFAS absorption. These together explained the higher RBA of PFAS in the chronic IBD. However, remarkably lower enzymatic activities suggested severely impaired digestive ability in the acute IBD, which facilitated the excretion of PFAS from feces, thus lowering the RBA. Conversely, PFAS exposure might exacerbate IBD by changing the gut microbiota structures. This study hints that individuals with chronic intestinal inflammation might have higher PFAS exposure risk than the healthy population.
Collapse
Affiliation(s)
- Yumin Zhu
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Xin Yang
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Xiaohua Song
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Yibo Jia
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Yanfeng Zhang
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Lingyan Zhu
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| |
Collapse
|
85
|
Xing WY, Sun JN, Liu FH, Shan LS, Yin JL, Li YZ, Xu HL, Wei YF, Liu JX, Zheng WR, Zhang YY, Song XJ, Liu KX, Liu JC, Wang JY, Jia MQ, Chen X, Li XY, Liu C, Gong TT, Wu QJ. Per- and polyfluoroalkyl substances and human health outcomes: An umbrella review of systematic reviews with meta-analyses of observational studies. JOURNAL OF HAZARDOUS MATERIALS 2024; 472:134556. [PMID: 38735187 DOI: 10.1016/j.jhazmat.2024.134556] [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: 01/18/2024] [Revised: 04/27/2024] [Accepted: 05/04/2024] [Indexed: 05/14/2024]
Abstract
BACKGROUND Although evidence on the association between per- and polyfluoroalkyl substances (PFASs) and human health outcomes has grown exponentially, specific health outcomes and their potential associations with PFASs have not been conclusively evaluated. METHODS We conducted a comprehensive search through the databases of PubMed, Embase, and Web of Science from inception to February 29, 2024, to identify systematic reviews with meta-analyses of observational studies examining the associations between the PFASs and multiple health outcomes. The quality of included studies was evaluated using the A Measurement Tool to Assess Systematic Reviews (AMSTAR) tool, and credibility of evidence was assessed using the Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) criteria. The protocol of this umbrella review (UR) had been registered in PROSPERO (CRD 42023480817). RESULTS The UR identified 157 meta-analyses from 29 articles. Using the AMSTAR measurement tool, all articles were categorized as of moderate-to-high quality. Based on the GRADE assessment, significant associations between specific types of PFASs and low birth weight, tetanus vaccine response, and triglyceride levels showed high certainty of evidence. Moreover, moderate certainty of evidence with statistical significance was observed between PFASs and health outcomes including lower BMI z-score in infancy, poor sperm progressive motility, and decreased risk of preterm birth as well as preeclampsia. Fifty-two (33%) associations (e.g., PFASs and gestational hypertension, cardiovascular disease, etc) presented low certainty evidence. Additionally, eighty-five (55%) associations (e.g., PFASs with infertility, lipid metabolism, etc) presented very low certainty evidence. CONCLUSION High certainty of evidence supported that certain PFASs were associated with the incidence of low birth weight, low efficiency of the tetanus vaccine, and low triglyceride levels.
Collapse
Affiliation(s)
- Wei-Yi Xing
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China; Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jia-Nan Sun
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Fang-Hua Liu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China; Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China
| | - Li-Shen Shan
- Department of Pediatric, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jia-Li Yin
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China; Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yi-Zi Li
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China; Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China
| | - He-Li Xu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China; Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yi-Fan Wei
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China; Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jia-Xin Liu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China; Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China
| | - Wen-Rui Zheng
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China; Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ying-Ying Zhang
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China; Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xin-Jian Song
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China; Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ke-Xin Liu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China; Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jia-Cheng Liu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China; Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jia-Yi Wang
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China; Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ming-Qian Jia
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China; Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xing Chen
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China; Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xiao-Ying Li
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China; Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China.
| | - Chuan Liu
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China.
| | - Ting-Ting Gong
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China.
| | - Qi-Jun Wu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China; Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China; Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China; NHC Key Laboratory of Advanced Reproductive Medicine and Fertility (China Medical University), National Health Commission, Shenyang, China.
| |
Collapse
|
86
|
Liu Y, Lin A, Thompson J, Bowden JA, Townsend TG. Per- and polyfluoroalkyl substances (PFAS) in construction and demolition debris (CDD): discerning sources and fate during waste management. JOURNAL OF HAZARDOUS MATERIALS 2024; 472:134567. [PMID: 38735190 DOI: 10.1016/j.jhazmat.2024.134567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 04/30/2024] [Accepted: 05/07/2024] [Indexed: 05/14/2024]
Abstract
As regulatory frameworks for per- and polyfluoroalkyl substances (PFAS) evolve, the solid waste community seeks to manage PFAS risks effectively. Despite extensive research on PFAS in municipal solid waste (MSW) and wastewater sludge, there is limited information on a major global waste stream which seldom gleans regulatory oversight - construction and demolition debris (CDD). This study sampled a CDD processing facility to provide material-specific information on the PFAS profile within CDD. The bulk CDD accepted by this facility was separated into major categories, representatively sampled, then characterized for total available PFAS (∑92PFAS). As reprocessed CDD is ultimately recycled or landfilled, often unencapsulated or in unlined landfills, the PFAS leaching potential was also examined using two leaching procedures. Among the categories assessed for total PFAS, carpeting, carpet padding, and gypsum drywall showed elevated concentrations compared to other components, with most of the PFAS mass contributed by precursor species. However, materials with the highest total PFAS, such as carpeting, did not necessarily exhibit the highest leaching, and leachate was predominantly composed of terminal species rather than precursors. Extrapolating these findings with national CDD generation and management data inventories suggests that despite MSW having higher total available PFAS concentrations, the leachability of PFAS from landfilled CDD is comparable, raising legitimate concerns with CDD disposal practices, particularly in unlined CDD landfills.
Collapse
Affiliation(s)
- Yalan Liu
- Department of Civil, Environmental and Geomatics Engineering, Florida Atlantic University, Boca Raton, FL 33431, USA; Department of Environmental Engineering Sciences, University of Florida, PO Box 116450, Gainesville, FL 32611-6450, USA
| | - Ashley Lin
- Department of Environmental Engineering Sciences, University of Florida, PO Box 116450, Gainesville, FL 32611-6450, USA
| | - Jake Thompson
- Department of Environmental Engineering Sciences, University of Florida, PO Box 116450, Gainesville, FL 32611-6450, USA
| | - John A Bowden
- Department of Environmental Engineering Sciences, University of Florida, PO Box 116450, Gainesville, FL 32611-6450, USA; Department of Department of Physiological Sciences, University of Florida, 1333 Center Drive, Basic Science Building, Room 324, Gainesville, FL 32610, USA
| | - Timothy G Townsend
- Department of Environmental Engineering Sciences, University of Florida, PO Box 116450, Gainesville, FL 32611-6450, USA.
| |
Collapse
|
87
|
Baumert BO, Maretti-Mira AC, Li Z, Stratakis N, Zhao Y, Walker DI, Wang H, Fischer FC, Jia Q, Valvi D, Bartell SM, Chen C, Inge T, Ryder J, Jenkins T, Sisley S, Xanthakos S, Kohli R, Rock S, Eckel SP, La Merrill MA, Aung MM, Salomon MP, McConnell R, Goodrich J, Conti DV, Golden-Mason L, Chatzi L. PFHpA alters lipid metabolism and increases the risk of metabolic dysfunction-associated steatotic liver disease in youth-a translational research framework. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.07.01.24309775. [PMID: 39006440 PMCID: PMC11245066 DOI: 10.1101/2024.07.01.24309775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
To address the growing epidemic of liver disease, particularly in pediatric populations, it is crucial to identify modifiable risk factors for the development and progression of metabolic dysfunction-associated steatotic liver disease (MASLD). Per- and polyfluoroalkyl substances (PFAS) are persistent ubiquitous chemicals and have emerged as potential risk factors for liver damage. However, their impact on the etiology and severity of MASLD remains largely unexplored in humans. This study aims to bridge the gap between human and in vitro studies to understand how exposure to perfluoroheptanoic acid (PFHpA), one of the emerging PFAS replacements which accumulates in high concentrations in the liver, contributes to MASLD risk and progression. First, we showed that PFHpA plasma concentrations were significantly associated with increased risk of MASLD in obese adolescents. Further, we examined the impact of PFHpA on hepatic metabolism using 3D human liver spheroids and single-cell transcriptomics to identify major hepatic pathways affected by PFHpA. Next, we integrated the in vivo and in vitro multi-omics datasets with a novel statistical approach which identified signatures of proteins and metabolites associated with MASLD development triggered by PFHpA exposure. In addition to characterizing the contribution of PFHpA to MASLD progression, our study provides a novel strategy to identify individuals at high risk of PFHpA-induced MASLD and develop early intervention strategies. Notably, our analysis revealed that the proteomic signature exhibited a stronger correlation between both PFHpA exposure and MASLD risk compared to the metabolomic signature. While establishing a clear connection between PFHpA exposure and MASLD progression in humans, our study delved into the molecular mechanisms through which PFHpA disrupts liver metabolism. Our in vitro findings revealed that PFHpA primarily impacts lipid metabolism, leading to a notable increase of lipid accumulation in human hepatocytes after PFHpA exposure. Among the pathways involved in lipid metabolism in hepatocytes, regulation of lipid metabolism by PPAR-a showed a remarkable activation. Moreover, the translational research framework we developed by integrating human and in vitro data provided us biomarkers to identify individuals at a high risk of MASLD due to PFHpA exposure. Our framework can inform policies on PFAS-induced liver disease and identify potential targets for prevention and treatment strategies.
Collapse
|
88
|
Santana Rodriguez KJ, Villeneuve DL, Cavallin JE, Blackwell BR, Hoang J, Hofer RN, Jensen KM, Kahl MD, Kutsi RN, Stacy E, Morshead ML, Ankley GT. Examining effects of a novel estrogenic perfluoro-alcohol, 1H,1H,8H,8H-Perfluorooctane-1,8-diol (FC8-diol), using the fathead minnow EcoToxChip. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2024. [PMID: 38961679 DOI: 10.1002/etc.5937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 04/20/2024] [Accepted: 05/27/2024] [Indexed: 07/05/2024]
Abstract
In a previous in vivo study, adult male fathead minnows (Pimephales promelas) were exposed via water for 4 days to 1H,1H,8H,8H-perfluorooctane-1,8-diol (FC8-diol). The present study expands on the evaluation of molecular responses to this perfluoro-alcohol by analyzing 26 male fathead minnow liver RNA samples from that study (five from each test concentration: 0, 0.018, 0.051, 0.171, and 0.463 mg FC8-diol/L) using fathead minnow EcoToxChips Ver. 1.0. EcoToxChips are a quantitative polymerase chain reaction array that allows for simultaneous measurement of >375 species-specific genes of toxicological interest. Data were analyzed with the online tool EcoToxXplorer. Among the genes analyzed, 62 and 96 were significantly up- and downregulated, respectively, by one or more FC8-diol treatments. Gene expression results from the previous study were validated, showing an upregulation of vitellogenin mRNA (vtg) and downregulation of insulin-like growth factor 1 mRNA (igf1). Additional genes related to estrogen receptor activation including esr2a (estrogen receptor 2a) and esrrb (estrogen related receptor beta) were also affected, providing further confirmation of the estrogenic nature of FC8-diol. Furthermore, genes involved in biological pathways related to lipid and carbohydrate metabolism, innate immune response, endocrine reproduction, and endocrine thyroid were significantly affected. These results both add confidence in the use of the EcoToxChip tool for inferring chemical mode(s) of action and provide further insights into the possible biological effects of FC8-diol. Environ Toxicol Chem 2024;00:1-9. © 2024 SETAC. This article has been contributed to by U.S. Government employees and their work is in the public domain in the USA.
Collapse
Affiliation(s)
- Kelvin J Santana Rodriguez
- Great Lakes Toxicology and Ecology Division, Oak Ridge Institute for Science and Education, US Environmental Protection Agency, Duluth, Minnesota
| | - Daniel L Villeneuve
- Great Lakes Toxicology and Ecology Division, US Environmental Protection Agency, Duluth, Minnesota
| | - Jenna E Cavallin
- Great Lakes Toxicology and Ecology Division, US Environmental Protection Agency, Duluth, Minnesota
| | - Brett R Blackwell
- Great Lakes Toxicology and Ecology Division, US Environmental Protection Agency, Duluth, Minnesota
| | - John Hoang
- Great Lakes Toxicology and Ecology Division, Oak Ridge Institute for Science and Education, US Environmental Protection Agency, Duluth, Minnesota
| | - Rachel N Hofer
- Great Lakes Toxicology and Ecology Division, US Environmental Protection Agency, Duluth, Minnesota
| | - Kathleen M Jensen
- Great Lakes Toxicology and Ecology Division, US Environmental Protection Agency, Duluth, Minnesota
| | - Michael D Kahl
- Great Lakes Toxicology and Ecology Division, US Environmental Protection Agency, Duluth, Minnesota
| | - Robin N Kutsi
- Great Lakes Toxicology and Ecology Division, Oak Ridge Institute for Science and Education, US Environmental Protection Agency, Duluth, Minnesota
| | - Emma Stacy
- Great Lakes Toxicology and Ecology Division, US Environmental Protection Agency, Duluth, Minnesota
| | - Mackenzie L Morshead
- Great Lakes Toxicology and Ecology Division, Oak Ridge Institute for Science and Education, US Environmental Protection Agency, Duluth, Minnesota
| | - Gerald T Ankley
- Great Lakes Toxicology and Ecology Division, US Environmental Protection Agency, Duluth, Minnesota
| |
Collapse
|
89
|
Dong X, Yang JZ. Deciphering Discord: How Conflicting Information and Political Ideology Shape Public Attitude Toward PFAS Regulation. JOURNAL OF HEALTH COMMUNICATION 2024; 29:409-419. [PMID: 38867422 DOI: 10.1080/10810730.2024.2367111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
Per- and polyfluorinated substances (PFAS) contamination is an emerging environmental and health risk facing the world. This study examines the impact of conflicting information on Americans' attitude toward PFAS regulation and intention to engage in mitigation behaviors through a one-way, between-subjects experiment. Participants were 1,062 U.S. adults recruited from CloudResearch. Results showed that compared to participants exposed to consistent information, those exposed to conflicting information displayed less favorable attitude toward existing regulation, which led to lower intention to support related policies and to engage in mitigation behaviors. Political ideology moderated these relationships, with stronger experimental effects among conservatives. These findings underscore the importance of conveying consistent risk messages, especially when multiple stakeholders are involved.
Collapse
Affiliation(s)
- Xinxia Dong
- Department of Communication, University at Buffalo, Buffalo, New York, USA
| | - Janet Z Yang
- Department of Communication, University at Buffalo, Buffalo, New York, USA
| |
Collapse
|
90
|
Farajollahi S, Lombardo NV, Crenshaw MD, Guo HB, Doherty ME, Davison TR, Steel JJ, Almand EA, Varaljay VA, Suei-Hung C, Mirau PA, Berry RJ, Kelley-Loughnane N, Dennis PB. Defluorination of Organofluorine Compounds Using Dehalogenase Enzymes from Delftia acidovorans (D4B). ACS OMEGA 2024; 9:28546-28555. [PMID: 38973860 PMCID: PMC11223199 DOI: 10.1021/acsomega.4c02517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 05/23/2024] [Accepted: 05/28/2024] [Indexed: 07/09/2024]
Abstract
Organofluorine compounds have been widely used as pharmaceuticals, agricultural pesticides, and water-resistant coatings for decades; however, these compounds are recognized as environmental pollutants. The capability of microorganisms and enzymes to defluorinate organofluorine compounds is both rare and highly desirable to facilitate environmental remediation efforts. Recently, a strain of Delftia acidovorans (D4B) was identified with potential biodegradation activity toward perfluoroalkyl substances (PFAS) and other organofluorine compounds. Genomic analysis found haloacid and fluoroacetate dehalogenases as enzymes associated with Delftia acidovorans. Here, defluorination activity of these enzymes toward different fluorinated substrates was investigated after their recombinant expression and purification from E. coli. Using an electrochemical fluoride probe, 19F NMR, and mass spectrometry to monitor defluorination, we identified two dehalogenases, DeHa2 (a haloacid dehalogenase) and DeHa4 (a fluoroacetate dehalogenase), with activity toward mono- and difluoroacetate. Of the two dehalogenases, DeHa4 demonstrated a low pH optimum compared to DeHa2, which lost catalytic activity under acidic conditions. DeHa2 and DeHa4 are relatively small proteins, operate under aerobic conditions, and remain active for days in the presence of substrates. Significantly, while there have been many reports on dehalogenation of monofluoroacetate by dehalogenases, this study adds to the relatively small list of enzymes reported to carry out enzymatic defluorination of the more recalcitrant disubstituted carbon in an organofluorine compound. Thus, DeHa2 and DeHa4 represent organofluorine dehalogenases that may be used in the future to design and engineer robust defluorination agents for environmental remediation efforts.
Collapse
Affiliation(s)
- Sanaz Farajollahi
- Air
Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, WPAFB, Ohio United States 45433-7131
| | - Nina V. Lombardo
- Air
Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, WPAFB, Ohio United States 45433-7131
- UES
a BlueHalo Company, 4401
Dayton-Xenia Rd., Dayton, Ohio United States 45432-1894
| | - Michael D. Crenshaw
- Air
Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, WPAFB, Ohio United States 45433-7131
- UES
a BlueHalo Company, 4401
Dayton-Xenia Rd., Dayton, Ohio United States 45432-1894
| | - Hao-Bo Guo
- Air
Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, WPAFB, Ohio United States 45433-7131
- UES
a BlueHalo Company, 4401
Dayton-Xenia Rd., Dayton, Ohio United States 45432-1894
| | - Megan E. Doherty
- Department
of Biology, United States Air Force Academy, Colorado Springs, Colorado United States 80840-5002
| | - Tina R. Davison
- Air
Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, WPAFB, Ohio United States 45433-7131
- UES
a BlueHalo Company, 4401
Dayton-Xenia Rd., Dayton, Ohio United States 45432-1894
| | - Jordan J. Steel
- Department
of Biology, United States Air Force Academy, Colorado Springs, Colorado United States 80840-5002
| | - Erin A. Almand
- Department
of Biology, United States Air Force Academy, Colorado Springs, Colorado United States 80840-5002
| | - Vanessa A. Varaljay
- Air
Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, WPAFB, Ohio United States 45433-7131
- The
Ohio State University, Infectious Diseases
Institute, Columbus, Ohio United States 43210-1132
| | - Chia Suei-Hung
- Air
Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, WPAFB, Ohio United States 45433-7131
| | - Peter A. Mirau
- Air
Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, WPAFB, Ohio United States 45433-7131
| | - Rajiv J. Berry
- Air
Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, WPAFB, Ohio United States 45433-7131
| | - Nancy Kelley-Loughnane
- Air
Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, WPAFB, Ohio United States 45433-7131
| | - Patrick B. Dennis
- Air
Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, WPAFB, Ohio United States 45433-7131
| |
Collapse
|
91
|
Zvekic M, Barrett H, Diamente P, Peng H, Krogh ET. Unique hepatic maternal transfer pattern of trace metals and perfluoroalkyl substances (PFAS) in a bluntnose sixgill shark (Hexanchus griseus). CHEMOSPHERE 2024; 359:142315. [PMID: 38735494 DOI: 10.1016/j.chemosphere.2024.142315] [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: 01/05/2024] [Revised: 03/28/2024] [Accepted: 05/09/2024] [Indexed: 05/14/2024]
Abstract
The fate and distribution of environmental contaminants includes bioaccumulation within marine organisms. A deceased 4-m long adult female bluntnose sixgill shark, pregnant with 72 pups, was recovered from Coles Bay on Vancouver Island, BC, Canada in 2019. This specimen provided a unique opportunity to examine maternal transfer of contaminants in a yolk-sac viviparous shark species. Liver subsamples of the adult and offspring were analyzed for 18 targeted inorganic elements by inductively coupled plasma optical emission spectroscopy (ICP-OES) and 21 targeted perfluoroalkyl substances (PFAS) by liquid chromatography-electrospray ionization-high resolution mass spectrometry (LC-ESI-Orbitrap MS). The maternal-offspring transfer efficiencies in liver tissue were subsequently examined for both contaminant classes. Concentrations of all detectable metals apart from calcium and magnesium were found to be higher in the mother compared to the offspring, including substantial levels of toxic cadmium (6 ± 2 mg kg-1 dw) and lead (7 ± 3 mg kg-1 dw). Conversely, high maternal transfer efficiencies were observed for PFAS (i.e., ΣPFAS = 71 ± 9 ng g-1 ww in offspring compared to 13 ± 9 ng g-1 ww in the mother). This study highlighted the unique maternal transfer characteristics of PFAS in bluntnose sixgill sharks depending on the structure of the polar head group, with greater liver-to-liver transfer efficiencies observed for perfluorocarboxylic acids (PFCAs) than perfluorosulfonic acids (PFSAs) of the same fluorocarbon chain length.
Collapse
Affiliation(s)
- Misha Zvekic
- Applied Environmental Research Laboratories (AERL), Department of Chemistry, Vancouver Island University, Nanaimo, V9R 5S5, British Columbia, Canada; Department of Chemistry, University of Victoria, Victoria, V8P 5C2, British Columbia, Canada
| | - Holly Barrett
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Peter Diamente
- Applied Environmental Research Laboratories (AERL), Department of Chemistry, Vancouver Island University, Nanaimo, V9R 5S5, British Columbia, Canada
| | - Hui Peng
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Erik T Krogh
- Applied Environmental Research Laboratories (AERL), Department of Chemistry, Vancouver Island University, Nanaimo, V9R 5S5, British Columbia, Canada; Department of Chemistry, University of Victoria, Victoria, V8P 5C2, British Columbia, Canada.
| |
Collapse
|
92
|
Stults JF, Schaefer CE, Fang Y, Devon J, Nguyen D, Real I, Hao S, Guelfo JL. Air-water interfacial collapse and rate-limited solid desorption control Perfluoroalkyl acid leaching from the vadose zone. JOURNAL OF CONTAMINANT HYDROLOGY 2024; 265:104382. [PMID: 38861839 DOI: 10.1016/j.jconhyd.2024.104382] [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: 01/31/2024] [Revised: 05/08/2024] [Accepted: 06/02/2024] [Indexed: 06/13/2024]
Abstract
Some Per- and polyfluoroalkyl substances (PFAS) are strongly retained in the vadose zone due to their sorption to both soils and air-water interfaces. While significant research has been dedicated to understanding equilibrium behavior for these multi-phase retention processes, leaching and desorption from aqueous film-forming foam (AFFF) impacted soils under field relevant conditions can exhibit significant deviations from equilibrium. Herein, laboratory column studies using field collected AFFF-impacted soils were employed to examine the leaching of perfluoroalkyl acids (PFAAs) under simulated rainfall conditions. The HYDRUS 1-D model was calibrated to estimate the unsaturated hydraulic properties of the soil in a layered system using multiple boundary condtions. Forward simulations of equilibrium PFAS partitioning using the HYDRUS model and simplified mass balance calculations showed good agreement with the net PFAS mass flux out of the column. However, neither were able to predict the PFAS concentrations in the leached porewater. To better understand the mechanisms controlling the leaching behavior, the HYDRUS 1-D two-site leaching model incorporating solid phase rate limitation and equilibrium air-water interfacial partitioning was employed. Three variations of the novel model incorporating different forms of equilibrium air-water interfacial partitioning were considered using built-in numerical inversion. Results of numerical inversion show that a combination of air-water interfacial collapse and rate-limited desorption from soils can better predict the unique leaching behavior exhibited by PFAAs in AFFF-impacted soils. A sensitivity analysis of the initial conditions and rate-limited desorption terms was conducted to assess the agreement of the model with measured data. The models demonstrated herein show that, under some circumstances, laboratory equilibrium partitioning data can provide a reasonable estimation of total mass leaching, but fail to account for the significant rate-limited, non-Fickian transport which affect PFAA leaching to groundwater in unsaturated soils.
Collapse
Affiliation(s)
- John F Stults
- CDM Smith, 14432 SE Eastgate Way, Suite 100, Bellevue, WA 98007, United States.
| | - Charles E Schaefer
- CDM Smith, 14432 SE Eastgate Way, Suite 100, Bellevue, WA 98007, United States; CDM Smith, 110 Fieldcrest Avenue, #8, 6th Floor, Edison, NJ 08837, United States
| | - Yida Fang
- CDM Smith, 14432 SE Eastgate Way, Suite 100, Bellevue, WA 98007, United States; Haley and Aldrich Inc., 3131 Elliott Ave #600, Seattle, WA 98121, United States
| | - Julie Devon
- CDM Smith, 14432 SE Eastgate Way, Suite 100, Bellevue, WA 98007, United States
| | - Dung Nguyen
- CDM Smith, 14432 SE Eastgate Way, Suite 100, Bellevue, WA 98007, United States
| | - Isreq Real
- Civil, Environmental, and Construction Engineering, Texas Tech University, Lubbock, TX 79409, USA
| | - Shilai Hao
- Civil & Environmental Engineering, Colorado School of Mines, Golden, CO 80401, USA
| | - Jennifer L Guelfo
- Civil, Environmental, and Construction Engineering, Texas Tech University, Lubbock, TX 79409, USA
| |
Collapse
|
93
|
Sehgal N, Barr DB, Eick SM. Invited Perspective: The Far Reach of PFAS-Inert Ingredients and Adjuvants in Pesticide Formulations. ENVIRONMENTAL HEALTH PERSPECTIVES 2024; 132:71304. [PMID: 39046249 PMCID: PMC11268132 DOI: 10.1289/ehp15445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 06/17/2024] [Accepted: 06/18/2024] [Indexed: 07/25/2024]
Affiliation(s)
- Neha Sehgal
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
| | - Dana Boyd Barr
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
| | - Stephanie M. Eick
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
| |
Collapse
|
94
|
Tessmann JW, Deng P, Durham J, Li C, Banerjee M, Wang Q, Goettl RA, He D, Wang C, Lee EY, Evers BM, Hennig B, Zaytseva YY. Perfluorooctanesulfonic acid exposure leads to downregulation of 3-hydroxy-3-methylglutaryl-CoA synthase 2 expression and upregulation of markers associated with intestinal carcinogenesis in mouse intestinal tissues. CHEMOSPHERE 2024; 359:142332. [PMID: 38754493 PMCID: PMC11157449 DOI: 10.1016/j.chemosphere.2024.142332] [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: 02/06/2024] [Revised: 05/06/2024] [Accepted: 05/12/2024] [Indexed: 05/18/2024]
Abstract
Perfluorooctanesulfonic acid (PFOS) is a widely recognized environment pollutant known for its high bioaccumulation potential and a long elimination half-life. Several studies have shown that PFOS can alter multiple biological pathways and negatively affect human health. Considering the direct exposure to the gastrointestinal (GI) tract to environmental pollutants, PFOS can potentially disrupt intestinal homeostasis. However, there is limited knowledge about the effect of PFOS exposure on normal intestinal tissues, and its contribution to GI-associated diseases remains to be determined. In this study, we examined the effect of PFOS exposure on the gene expression profile of intestinal tissues of C57BL/6 mice using RNAseq analysis. We found that PFOS exposure in drinking water significantly downregulates mitochondrial 3-hydroxy-3-methylglutaryl-CoA synthase 2 (HMGCS2), a rate-limiting ketogenic enzyme, in intestinal tissues of mice. We found that diets containing the soluble fibers inulin and pectin, which are known to be protective against PFOS exposure, were ineffective in reversing the downregulation of HMGCS2 expression in vivo. Analysis of intestinal tissues also demonstrated that PFOS exposure leads to upregulation of proteins implicated in colorectal carcinogenesis, including β-catenin, c-MYC, mTOR and FASN. Consistent with the in vivo results, PFOS exposure leads to downregulation of HMGCS2 in mouse and human normal intestinal organoids in vitro. Furthermore, we show that shRNA-mediated knockdown of HMGCS2 in a human normal intestinal cell line resulted in increased cell proliferation and upregulation of key proliferation-associated proteins such as cyclin D, survivin, ERK1/2 and AKT, along with an increase in lipid accumulation. In summary, our results suggest that PFOS exposure may contribute to pathological changes in normal intestinal cells via downregulation of HMGCS2 expression and upregulation of pro-carcinogenic signaling pathways that may increase the risk of colorectal cancer development.
Collapse
Affiliation(s)
- Josiane Weber Tessmann
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40536, USA.
| | - Pan Deng
- College of Pharmaceutical Sciences, Soochow University, Suzhou, China.
| | - Jerika Durham
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40536, USA.
| | - Chang Li
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA.
| | - Moumita Banerjee
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA.
| | - Qingding Wang
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA.
| | - Ryan A Goettl
- Markey Cancer Center Biostatistics and Bioinformatics Shared Resource Facility, University of Kentucky, Lexington, KY 40536, USA.
| | - Daheng He
- Markey Cancer Center Biostatistics and Bioinformatics Shared Resource Facility, University of Kentucky, Lexington, KY 40536, USA.
| | - Chi Wang
- Markey Cancer Center Biostatistics and Bioinformatics Shared Resource Facility, University of Kentucky, Lexington, KY 40536, USA.
| | - Eun Y Lee
- Department of Pathology and Laboratory Medicine, University of Kentucky, Lexington, KY 40536, USA.
| | - B Mark Evers
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA.
| | - Bernhard Hennig
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY 40536, USA.
| | - Yekaterina Y Zaytseva
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40536, USA; Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA.
| |
Collapse
|
95
|
Vázquez Loureiro P, Nguyen KH, Rodríguez Bernaldo de Quirós A, Sendón R, Granby K, Niklas AA. Identification and quantification of per- and polyfluorinated alkyl substances (PFAS) migrating from food contact materials (FCM). CHEMOSPHERE 2024; 360:142360. [PMID: 38761829 DOI: 10.1016/j.chemosphere.2024.142360] [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: 02/09/2024] [Revised: 05/15/2024] [Accepted: 05/16/2024] [Indexed: 05/20/2024]
Abstract
Per- and polyfluorinated alkyl substances (PFAS) can be added to food contact materials (FCM) to increase their water and/or grease repellent properties. Some well-known PFAS are perfluoroalkyl carboxylic acids (PFCA), perfluoroalkyl sulfonic acids (PFSA), and polyfluorinated telomer alcohols (FTOH). Due to the strength of the carbon-fluorine bond, PFAS are chemically very stable and highly resistant to biological degradation, posing a risk to human health and the environment. To examine the presence of PFAS in paper-based FCM, various samples were collected, including popcorn bags, muffin cups, and pizza boxes with high total organic fluorine (TOF) content from the Danish and Spanish markets. The FCM composition was characterised by FTIR. Quantification of some well-known PFAS such as PFCA, PFSA, and FTOH was performed in food simulants using LC-MS/MS, and in addition a non-targeted screening approach was performed by LC-Orbitrap-HRMS. Among analysed samples, the highest concentrations of PFAS were found in a muffin cup made of cellulose (PFCA ∼ 1.41 μg kg-1 food, FTOH ∼ 11.5 μg kg-1 food), and the results were used to estimate dietary exposures to PFAS migrated from this FCM. Compared to measured TOF value in this sample, the fluorine from all quantified PFAS accounted for only 0.6%. Thus, a more powerful analytical approach was used to further investigate PFAS occurrence in this sample. Using non-targeted screening, an additional twenty compounds were identified, among them five with confidence level 1 and ten with confidence level 2. Many of them were either fluorotelomer carboxylic acids or sulfonic acids or ether-containing compounds.
Collapse
Affiliation(s)
- Patricia Vázquez Loureiro
- Technical University of Denmark, National Food Institute, 2800, Kgs. Lyngby, Denmark; Department of Analytical Chemistry, Nutrition and Food Science, Faculty of Pharmacy, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Khanh-Hoang Nguyen
- Technical University of Denmark, National Food Institute, 2800, Kgs. Lyngby, Denmark
| | - Ana Rodríguez Bernaldo de Quirós
- Department of Analytical Chemistry, Nutrition and Food Science, Faculty of Pharmacy, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Raquel Sendón
- Department of Analytical Chemistry, Nutrition and Food Science, Faculty of Pharmacy, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Kit Granby
- Technical University of Denmark, National Food Institute, 2800, Kgs. Lyngby, Denmark
| | - Agnieszka A Niklas
- Technical University of Denmark, National Food Institute, 2800, Kgs. Lyngby, Denmark.
| |
Collapse
|
96
|
Weitz K, Kantner D, Kessler A, Key H, Larson J, Bodnar W, Parvathikar S, Davis L, Robey N, Taylor P, De la Cruz F, Tolaymat T, Weber N, Linak W, Krug J, Phelps L. Review of per- and poly-fluoroalkyl treatment in combustion-based thermal waste systems in the United States. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 932:172658. [PMID: 38657813 DOI: 10.1016/j.scitotenv.2024.172658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 04/19/2024] [Accepted: 04/19/2024] [Indexed: 04/26/2024]
Abstract
Per- and poly-fluoroalkyl substances (PFAS) are a class of synthetic chemicals known for their widespread presence and environmental persistence. Carbon-fluorine (C-F) bonds are major components among PFAS and among the strongest organic bonds, thus destroying PFAS may present significant challenge. Thermal treatment such as incineration is an effective and approved method for destroying many halogenated organic chemicals. Here, we present the results of existing studies and testing at combustion-based thermal treatment facilities and summarize what is known regarding PFAS destruction and mineralization at such units. Available results suggest the temperature and residence times reached by some thermal treatment systems are generally favorable to the destruction of PFAS, but the possibility for PFAS or fluorinated organic byproducts to escape destruction and adequate mineralization and be released into the air cannot be ruled out. Few studies have been conducted at full-scale operating facilities, and none to date have attempted to characterize possible fluorinated organic products of incomplete combustion (PICs). Further, the ability of existing air pollution control (APC) systems, designed primarily for particulate and acid gas control, to reduce PFAS air emissions has not been determined. These data gaps remain primarily due to the previous lack of available methods to characterize PFAS destruction and PIC concentrations in facility air emissions. However, newly developed stack testing methods offer an improved understanding of the extent to which thermal waste treatment technologies successfully destroy and mineralize PFAS in these waste streams.
Collapse
Affiliation(s)
- Keith Weitz
- RTI International, Research Triangle Park, NC, USA
| | | | | | - Haley Key
- RTI International, Research Triangle Park, NC, USA
| | - Judd Larson
- RTI International, Research Triangle Park, NC, USA
| | - Wanda Bodnar
- RTI International, Research Triangle Park, NC, USA
| | | | - Lynn Davis
- RTI International, Research Triangle Park, NC, USA
| | - Nicole Robey
- Innovative Technical Solutions, Gainesville, FL, USA
| | | | - Florentino De la Cruz
- College of Computing, Engineering and Construction, University of North Florida, Jacksonville, FL, USA
| | - Thabet Tolaymat
- Center for Environmental Solutions and Emergency Management, Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, OH, USA
| | - Nathan Weber
- Oak Ridge Institute for Science and Education, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
| | - William Linak
- Center for Environmental Measurement and Modeling, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
| | - Jonathan Krug
- Center for Environmental Measurement and Modeling, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
| | - Lara Phelps
- Center for Environmental Measurement and Modeling, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA.
| |
Collapse
|
97
|
Rispens B, Hendriks AJ. Towards process-based modelling and parameterisation of bioaccumulation in humans across PFAS congeners. CHEMOSPHERE 2024; 359:142253. [PMID: 38714250 DOI: 10.1016/j.chemosphere.2024.142253] [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: 09/05/2023] [Revised: 04/23/2024] [Accepted: 05/03/2024] [Indexed: 05/09/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are a large class of stable toxic chemicals which have ended up in the environment and in organisms in significant concentrations. Toxicokinetic models are needed to facilitate extrapolation of bioaccumulation data across PFAS congeners and species. For the present study, we carried out an inventory of accumulation processes specific for PFAS, deviating from traditional Persistent Organic Pollutants (POPs). In addition, we reviewed toxicokinetic models on PFAS reported in literature, classifying them according to the number of compartments distinguished as a one-compartment model (1-CM), two-compartment model (2- CM) or a multi-compartment model, (multi-CM) as well as the accumulation processes included and the parameters used. As the inventory showed that simple 1-CMs were lacking, we developed a generic 1-CM of ourselves to include PFAS specific processes and validated the model for legacy perfluoroalkyl acids. Predicted summed elimination constants were accurate for long carbon chains (>C6), indicating that the model properly represented toxicokinetic processes for most congeners. Results for urinary elimination rate constants were mixed, which might be caused by the exclusion of reabsorption processes (renal reabsorption, enterohepatic circulation). The 1-CM needs to be improved further in order to better predict individual elimination pathways. Besides that, more data on PFAS-transporter specific processes are needed to extrapolate across PFAS congeners and species.
Collapse
Affiliation(s)
- Bjorn Rispens
- Department of Environmental Science, Radboud Institute for Biological and Environmental Sciences, Radboud University, Heyendaalseweg 135, 6525, AJ Nijmegen, the Netherlands
| | - A Jan Hendriks
- Department of Environmental Science, Radboud Institute for Biological and Environmental Sciences, Radboud University, Heyendaalseweg 135, 6525, AJ Nijmegen, the Netherlands.
| |
Collapse
|
98
|
Wang T, Yang J, Han Y, Wāng Y. Unveiling the intricate connection between per- and polyfluoroalkyl substances and prostate hyperplasia. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 932:173085. [PMID: 38729377 DOI: 10.1016/j.scitotenv.2024.173085] [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: 01/29/2024] [Revised: 04/10/2024] [Accepted: 05/07/2024] [Indexed: 05/12/2024]
Abstract
The presence of perfluoroalkyl and polyfluoroalkyl substances (PFAS) in various everyday products has raised concerns about their potential impact on prostate health. This study aimed to investigate the effects of different types of PFAS on prostate health, including PFDeA, PFOA, PFOS, PFHxS, and PFNA. To assess the relationship between PFAS exposure and prostate injury, machine learning algorithms were employed to analyze prostate-specific antigen (PSA) metrics. The analysis revealed a linear and positive dose-dependent association between PFOS and the ratio of free PSA to total PSA (f/tPSA). Non-linear dose-response relationships were observed between the other four types of PFAS and the f/tPSA ratio. Additionally, the analysis showed a positive association between the mixture of PFAS and prostate hyperplasia, with PFNA having the highest impact followed by PFOS. These findings suggest that elevated serum levels of PFDeA, PFOA, PFOS, and PFNA are linked to prostate hyperplasia. Therefore, this study utilized advanced machine learning techniques to uncover potential hazardous effects of PFAS exposure on prostate health, specifically the positive association between PFAS and prostate hyperplasia.
Collapse
Affiliation(s)
- Tian Wang
- Research Center for Translational Medicine, the Second Affiliated Hospital of Anhui Medical University; School of Public Health, Anhui Medical University, Hefei 230601, China; Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, China
| | - Jijingru Yang
- School of the Second Clinical Medicine, Anhui Medical University, Hefei 230032, China
| | - Yapeng Han
- Research Center for Translational Medicine, the Second Affiliated Hospital of Anhui Medical University; School of Public Health, Anhui Medical University, Hefei 230601, China
| | - Yán Wāng
- Research Center for Translational Medicine, the Second Affiliated Hospital of Anhui Medical University; School of Public Health, Anhui Medical University, Hefei 230601, China; Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, China.
| |
Collapse
|
99
|
Buckley JP, Zhou J, Marquess KM, Lanphear BP, Cecil KM, Chen A, Sears CG, Xu Y, Yolton K, Kalkwarf HJ, Braun JM, Kuiper JR. Per- and polyfluoroalkyl substances and bone mineral content in early adolescence: Modification by diet and physical activity. ENVIRONMENTAL RESEARCH 2024; 252:118872. [PMID: 38580001 PMCID: PMC11156547 DOI: 10.1016/j.envres.2024.118872] [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: 02/26/2024] [Revised: 04/01/2024] [Accepted: 04/02/2024] [Indexed: 04/07/2024]
Abstract
BACKGROUND Per- and polyfluoroalkyl substance (PFAS) exposures may negatively impact bone mineral accrual, but little is known about potential mitigators of this relation. We assessed whether associations of PFAS and their mixture with bone mineral content (BMC) in adolescence were modified by diet and physical activity. METHODS We included 197 adolescents enrolled in a prospective pregnancy and birth cohort in Cincinnati, Ohio (2003-2006). At age 12 years, we collected serum for PFAS measurements and used dual-energy x-ray absorptiometry to measure BMC. We calculated dietary calcium intake and Health Eating Index (HEI) scores from repeated 24-h dietary recalls, physical activity scores using the Physical Activity Questionnaire for Older Children (PAQ-C), and average moderate to vigorous physical activity (MVPA) based on accelerometry. We estimated covariate-adjusted differences in BMC z-scores per interquartile range (IQR) increase of individual PFAS concentrations using linear regression and per simultaneous IQR increase in all four PFAS using g-computation. We evaluated effect measure modification (EMM) using interaction terms between each modifier and PFAS. RESULTS Higher serum perfluorooctanoic acid, perfluorooctanesulfonic acid, and perfluorononanoic acid concentrations and the PFAS mixture were associated with lower BMC z-scores. An IQR increase in all PFAS was associated with a 0.27 (-0.54, 0.01) lower distal radius BMC z-score. Associations with lower BMC were generally stronger among adolescents classified as < median for calcium intake, HEI scores, or MVPA compared to those ≥ median. The difference in distal radius BMC z-score per IQR increase in all PFAS was -0.38 (-0.72, -0.04) for those with CONCLUSION Healthy, calcium-rich diets and higher intensity physical activity may mitigate the adverse impact of PFAS on adolescent bone health.
Collapse
Affiliation(s)
- Jessie P Buckley
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
| | - Junyi Zhou
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, USA
| | - Katherine M Marquess
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, USA
| | - Bruce P Lanphear
- Faculty of Health Sciences, Simon Fraser University, Vancouver, Canada
| | - Kim M Cecil
- Department of Radiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, USA; Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, USA
| | - Aimin Chen
- Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania Perelman School of Medicine, Philadelphia, USA
| | - Clara G Sears
- Christina Lee Brown Envirome Institute, Department of Medicine, Division of Environmental Medicine, University of Louisville, KY, USA
| | - Yingying Xu
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, USA
| | - Kimberly Yolton
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, USA
| | - Heidi J Kalkwarf
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, USA
| | - Joseph M Braun
- Department of Epidemiology, Brown University, Providence, USA
| | - Jordan R Kuiper
- Department of Environmental and Occupational Health, The George Washington University Milken Institute School of Public Health, Washington, D.C., USA
| |
Collapse
|
100
|
Siddiqui S. Microplastics: A potential booster for PFAS in biosolids. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2024; 20:912-913. [PMID: 38896091 DOI: 10.1002/ieam.4965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Accepted: 05/17/2024] [Indexed: 06/21/2024]
Affiliation(s)
- Samreen Siddiqui
- King County, Seattle, Washington, USA
- IEAM Editorial Board Member
| |
Collapse
|