1
|
Huang H, Li X, Deng Y, San S, Qiu D, Xu A, Luo J, Xu L, Li Y, Zhang H, Li Y. Associations between prenatal exposure to per- and polyfluoroalkyl substances and plasma immune molecules in three-year-old children in China. Toxicol Appl Pharmacol 2024; 490:117044. [PMID: 39074624 DOI: 10.1016/j.taap.2024.117044] [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: 04/30/2024] [Revised: 07/12/2024] [Accepted: 07/24/2024] [Indexed: 07/31/2024]
Abstract
BACKGROUND Many studies have reported that prenatal exposure to Per- and Polyfluoroalkyl Substances (PFASs) can disrupt immune function. However, little is known about the effects of PFASs on immune molecules. The study analyzed the association between prenatal exposure to mixed and single PFASs and plasma immune molecules in three-year-old children. METHODS Ten PFASs were measured in umbilical cord serum, while peripheral blood samples were collected at age three to measure immune molecules. Associations between exposure to individual and combined PFASs and immune molecules were analyzed using Generalized Linear Models and Weighted Quantile Sum (WQS) regression. RESULTS (1) Interleukin-4 (IL-4) increased by 23.85% (95% CI:2.99,48.94) with each doubling of Perfluorooctanoic Acid (PFOA), and Interleukin-6 (IL-6) increased by 39.07% (95%CI:4.06,85.86) with Perfluorotridecanoic Acid (PFTrDA). Elevated PFOA and Perfluorononanoic Acid (PFNA) were correlated with increases of 34.06% (95% CI: 6.41, 70.28) and 24.41% (95% CI: 0.99, 53.27) in Eotaxin-3, respectively. Additionally, the doubling of Perfluorohexane Sulfonic Acid (PFHxS) was associated with a 9.51% decrease in Periostin (95% CI: -17.84, -0.33). (2) The WQS analysis revealed that mixed PFASs were associated with increased IL-6 (β = 0.37, 95%CI:0.04,0.69), mainly driven by PFTrDA, PFNA, and 8:2 Chlorinated Perfluoroethyl Sulfonamide (8:2 Cl-PFESA). Moreover, mixed PFASs were linked to an increase in Eotaxin-3 (β = 0.32, 95% CI: 0.09,0.55), primarily influenced by PFOA, PFTrDA, and Perfluorododecanoic Acid (PFDoDA). CONCLUSIONS Prenatal PFASs exposure significantly alters the levels of immune molecules in three-year-old children, highlighting the importance of understanding environmental impacts on early immune development.
Collapse
Affiliation(s)
- Haiyun Huang
- School of Medicine and Health, Wuhan Polytechnic University, Wuhan 430023, Hubei, China
| | - Xiaojun Li
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China
| | - Yican Deng
- School of Medicine and Health, Wuhan Polytechnic University, Wuhan 430023, Hubei, China
| | - Siyi San
- School of Medicine and Health, Wuhan Polytechnic University, Wuhan 430023, Hubei, China
| | - Dongmei Qiu
- School of Medicine and Health, Wuhan Polytechnic University, Wuhan 430023, Hubei, China
| | - Ao Xu
- School of Medicine and Health, Wuhan Polytechnic University, Wuhan 430023, Hubei, China
| | - Jiyu Luo
- School of Medicine and Health, Wuhan Polytechnic University, Wuhan 430023, Hubei, China
| | - Lingyun Xu
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, Hubei, China
| | - Yang Li
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, Hubei, China
| | - Hongling Zhang
- School of Medicine and Health, Wuhan Polytechnic University, Wuhan 430023, Hubei, China.
| | - Yuanyuan Li
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China.
| |
Collapse
|
2
|
Tan Y, Taibl KR, Dunlop AL, Barr DB, Panuwet P, Yakimavets V, Kannan K, Corwin EJ, Ryan PB, Eatman JA, Liang D, Eick SM. Association between a Mixture of Per- and Polyfluoroalkyl Substances (PFAS) and Inflammatory Biomarkers in the Atlanta African American Maternal-Child Cohort. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:13419-13428. [PMID: 37649345 PMCID: PMC10900195 DOI: 10.1021/acs.est.3c04688] [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] [Indexed: 09/01/2023]
Abstract
Per- and polyfluoroalkyl substances (PFAS) have been identified as environmental contributors to adverse birth outcomes. One potential mechanistic pathway could be through PFAS-related inflammation and cytokine production. Here, we examined associations between a PFAS mixture and inflammatory biomarkers during early and late pregnancy from participants enrolled in the Atlanta African American Maternal-Child Cohort (N = 425). Serum concentrations of multiple PFAS were detected in >90% samples at 8-14 weeks gestation. Serum concentrations of interferon-γ (IFN-γ), interleukin 6 (IL-6), interleukin 10 (IL-10), tumor necrosis factor-α (TNF-α), and C-reactive protein (CRP) were measured at up to two time points (8-14 weeks and 24-30 weeks gestation). The effect of the PFAS mixture on each inflammatory biomarker was examined using quantile g-computation, Bayesian kernel machine regression (BKMR), Bayesian Weighted Sums (BWS), and weighted quantile sum (WQS) regression. Across all models, the PFAS mixture was associated with increased IFN-γ, IL-10, and TNF-α at both time points, with the strongest effects being observed at 24-30 weeks. Using quantile g-computation, increasing concentrations of a PFAS mixture were associated with a 29% (95% confidence interval = 18.0%, 40.7%) increase in TNF-α at 24-30 weeks. Similarly, using BWS, the PFAS mixture was associated with increased TNF-α at 24-30 weeks (summed effect = 0.29, 95% highest posterior density = 0.17, 0.41). The PFAS mixture was also positively associated with TNF-α at 24-30 weeks using BKMR [75th vs 50th percentile: 17.1% (95% credible interval = 7.7%, 27.4%)]. Meanwhile, PFOS was consistently the main drivers of overall mixture effect across four methods. Our findings indicated an increase in prenatal PFAS exposure is associated with an increase in multiple pro-inflammatory cytokines, potentially contributing to adverse pregnancy outcomes.
Collapse
Affiliation(s)
- Youran Tan
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, 30329, USA
| | - Kaitlin R. Taibl
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, 30329, USA
| | - Anne L. Dunlop
- Department of Gynecology and Obstetrics, School of Medicine, Emory University, Atlanta, GA, 30329, USA
| | - Dana Boyd Barr
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, 30329, USA
| | - Parinya Panuwet
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, 30329, USA
| | - Volha Yakimavets
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, 30329, USA
| | - Kurunthachalam Kannan
- Department of Pediatrics, New York University School of Medicine, New York, NY, 10016, USA
- Department of Environmental Medicine, New York University School of Medicine, New York, 10016, NY, USA
| | | | - P. Barry Ryan
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, 30329, USA
| | - Jasmin A. Eatman
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, 30329, USA
| | - Donghai Liang
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, 30329, USA
| | - Stephanie M. Eick
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, 30329, USA
| |
Collapse
|
3
|
Ehrlich V, Bil W, Vandebriel R, Granum B, Luijten M, Lindeman B, Grandjean P, Kaiser AM, Hauzenberger I, Hartmann C, Gundacker C, Uhl M. Consideration of pathways for immunotoxicity of per- and polyfluoroalkyl substances (PFAS). Environ Health 2023; 22:19. [PMID: 36814257 PMCID: PMC9944481 DOI: 10.1186/s12940-022-00958-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 12/30/2022] [Indexed: 05/02/2023]
Abstract
BACKGROUND Per- and polyfluoroalkyl substances (PFAS) are of public health concern, because of their ubiquitous and extremely persistent occurrence, and depending on their structure, their bio-accumulative, mobile and toxic properties. Human health effects associated with exposure to PFAS include adverse effects on the immune system. In 2020, EFSA (the European Food Safety Authority) defined adverse effects on the immune system as the most critical effect for human health risk assessment, based on reduced antibody responses to childhood vaccines and similar effects observed in experimental animal studies. Likewise, the U.S. EPA (Environmental Protection Agency) considers PFAS-induced immunotoxicity, especially in children, as the critical effect for risk assessment. However, the mechanisms by which antibody concentrations are impacted are not completely understood. Furthermore, other targets of the immune system functions have been reported in the literature. OBJECTIVE The aim of this review is to explore PFAS-associated immune-related effects. This includes, relevant mechanisms that may underlie the observed effects on the immune system, immunosuppression as well as immunoenhancement, such as i) modulation of cell signalling and nuclear receptors, such as NF-κB and PPARs; ii) alteration of calcium signalling and homoeostasis in immune cells; iii) modulation of immune cell populations; iv) oxidative stress and v) impact on fatty acid metabolism & secondary effects on the immune system. METHODS A literature research was conducted using three databases (Web of Science, PubMed, and Scopus), which were searched in July 2021 for relevant studies published in the time frame from 2018 to 2021. In total, 487 publications were identified as potentially eligible and following expert-based judgement, articles relevant for mechanisms of PFAS induced immunotoxicity are discussed. CONCLUSIONS Taken together, we show that there is substantial evidence from both in vitro and in vivo experimental as well as epidemiological studies, supporting that various PFAS, not only PFOA and PFOS, affect multiple aspects of the immune system. Timing of exposure is critical, because the developing immune system is especially vulnerable to toxic insults, resulting in a higher risk of particularly adverse immune effects but also other organs later in life.
Collapse
Affiliation(s)
- Veronika Ehrlich
- Environment Agency Austria (Umweltbundesamt GmbH), Spittelauer Lände 5, 1090, Vienna, Austria
| | - Wieneke Bil
- Centre for Safety of Substances and Products, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Rob Vandebriel
- Centre for Health Protection, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Berit Granum
- Division of Climate and Environment Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Mirjam Luijten
- Centre for Health Protection, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Birgitte Lindeman
- Division of Climate and Environment Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Philippe Grandjean
- Department of Public Health, University of Southern Denmark, Odense, Denmark
- Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, RI, USA
| | - Andreas-Marius Kaiser
- Environment Agency Austria (Umweltbundesamt GmbH), Spittelauer Lände 5, 1090, Vienna, Austria
| | - Ingrid Hauzenberger
- Environment Agency Austria (Umweltbundesamt GmbH), Spittelauer Lände 5, 1090, Vienna, Austria
| | - Christina Hartmann
- Environment Agency Austria (Umweltbundesamt GmbH), Spittelauer Lände 5, 1090, Vienna, Austria
| | - Claudia Gundacker
- Center for Pathobiochemistry and Genetics, Medical University of Vienna, Vienna, Austria
| | - Maria Uhl
- Environment Agency Austria (Umweltbundesamt GmbH), Spittelauer Lände 5, 1090, Vienna, Austria.
| |
Collapse
|
4
|
Shen M, Xiao Y, Huang Y, Jing D, Su J, Luo D, Duan Y, Xiao S, Li J, Chen X. Perfluoroalkyl substances are linked to incident chronic spontaneous urticaria: A nested case-control study. CHEMOSPHERE 2022; 287:132358. [PMID: 34583294 DOI: 10.1016/j.chemosphere.2021.132358] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 08/26/2021] [Accepted: 09/23/2021] [Indexed: 06/13/2023]
Abstract
Previous studies suggested immunotoxicity of perfluoroalkyl substances (PFASs), but contradictory findings were reported for the associations of PFASs with allergies. The current study aimed to investigate the association of serum PFASs with incident chronic spontaneous urticaria (CSU) in adults. A nested case-control study within a longitudinal cohort of 7051 government employees in China was conducted. Participants with urticaria at the baseline were excluded. During the first follow-up, 70 incident CSU cases were included, and 70 matched healthy controls were randomly selected. In serum samples collected at the baseline, eight PFASs were determined using the UHPLC-MS/MS approach. The median serum concentrations of perfluorobutanoic acid (PFBA) and perfluoroheptanoic acid (PFHpA) were significantly higher in participants with incident CSU. The area under the receiver operating characteristic curve was 0.714 (95% CI: 0.60-0.83) based on the joint prediction by PFBA and PFHpA. The Bayesian kernel machine regression showed a nonlinear positive overall effect of the mixture of PFASs, and identified significant single effects of PFBA and PFHpA. Serum interleukin-4 was significantly higher in the case group at baseline, and was positively associated with PFHpA (r = 0.24). Causal mediation analysis indicated interleukin-4 as a partial mediator (14.8%) in the association of PFHpA with CSU. In conclusion, serum PFASs are associated with an increased risk of incident CSU, and PFBA and PFHpA might be the effective compounds.
Collapse
Affiliation(s)
- Minxue Shen
- Department of Dermatology, Hunan Engineering Research Center of Skin Health and Disease Xiangya Hospital, Hunan Key Laboratory of Skin Cancer and Psoriasis, Central South University, Changsha, China; Department of Social Medicine and Health Management, Xiangya School of Public Health, Central South University, Changsha, China.
| | - Yi Xiao
- Department of Dermatology, Hunan Engineering Research Center of Skin Health and Disease Xiangya Hospital, Hunan Key Laboratory of Skin Cancer and Psoriasis, Central South University, Changsha, China
| | - Yuzhou Huang
- Department of Dermatology, Hunan Engineering Research Center of Skin Health and Disease Xiangya Hospital, Hunan Key Laboratory of Skin Cancer and Psoriasis, Central South University, Changsha, China
| | - Danrong Jing
- Department of Dermatology, Hunan Engineering Research Center of Skin Health and Disease Xiangya Hospital, Hunan Key Laboratory of Skin Cancer and Psoriasis, Central South University, Changsha, China
| | - Juan Su
- Department of Dermatology, Hunan Engineering Research Center of Skin Health and Disease Xiangya Hospital, Hunan Key Laboratory of Skin Cancer and Psoriasis, Central South University, Changsha, China
| | - Dan Luo
- Department of Social Medicine and Health Management, Xiangya School of Public Health, Central South University, Changsha, China
| | - Yanying Duan
- Department of Environmental and Occupational Health, Xiangya School of Public Health, Central South University, Changsha, China
| | - Shuiyuan Xiao
- Department of Social Medicine and Health Management, Xiangya School of Public Health, Central South University, Changsha, China
| | - Jie Li
- Department of Dermatology, Hunan Engineering Research Center of Skin Health and Disease Xiangya Hospital, Hunan Key Laboratory of Skin Cancer and Psoriasis, Central South University, Changsha, China.
| | - Xiang Chen
- Department of Dermatology, Hunan Engineering Research Center of Skin Health and Disease Xiangya Hospital, Hunan Key Laboratory of Skin Cancer and Psoriasis, Central South University, Changsha, China.
| |
Collapse
|
5
|
Zhang H, Shen L, Fang W, Zhang X, Zhong Y. Perfluorooctanoic acid-induced immunotoxicity via NF-kappa B pathway in zebrafish (Danio rerio) kidney. FISH & SHELLFISH IMMUNOLOGY 2021; 113:9-19. [PMID: 33727078 DOI: 10.1016/j.fsi.2021.03.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 03/07/2021] [Accepted: 03/10/2021] [Indexed: 05/14/2023]
Abstract
Perfluorooctanoic acid (PFOA) is widely used in industrial production due to its stable chemical structure and hydrophobic and oleophobic characteristics. PFOA has been frequently detected in environmental media and organisms, leading to increased health risks. There is a lack of information about the immunotoxicity of aquatic organisms induced by PFOA, and the molecular mechanisms remain unclear. In this study, LC-MS analysis proved that PFOA can accumulate in the kidney of zebrafish. In the 0.05 mg/L PFOA treatment group, the accumulation of PFOA in the kidney after 21 days of exposure significantly increased by 79.89%, compared to 14 days of exposure. And a hydropic endoplasmic reticulum, swelling of mitochondria and vacuolization were observed in kidney immune cells of zebrafish. The Toll-like receptor 2 (TLR2)/myeloid differentiation factor 88 (myd88)/NF-κB (P65) pathway was activated when PFOA exerted its effects, which led to regulation of antibody expression; RT-PCR results showed that the mRNA expression level of interleukin-4 (IL-4) decreased in a dose-dependent manner, decreasing to 29.6% of the control level in the 1 mg/L PFOA group after 21 d of exposure. According to triangle plot analysis, immunoglobulin exhibited a notable stress response to PFOA at an early phase; a high concentration of PFOA may disrupt the immune system of zebrafish. Third-order polynomial fitting analysis showed that the high-mRNA-expression regions of IL-4 and antibodies were partially consistent. The results indicated that PFOA could affect antibodies by increasing the concentrations of proinflammatory cytokines. Changes in antibody levels further influenced the expression of other cytokines, which eventually caused disorders in the zebrafish immune system. This study expands the understanding of PFOA-induced immunosuppression and suggests that toxicity mechanisms should be considered for further health risk assessment of emerging pollutants.
Collapse
Affiliation(s)
- Hangjun Zhang
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, China
| | - Lilai Shen
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, China
| | - Wendi Fang
- School of Life Sciences, China Jiliang University, Hangzhou, 310018, China
| | - Xiaofang Zhang
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, China
| | - Yuchi Zhong
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, China.
| |
Collapse
|
6
|
Luo Y, Deji Z, Huang Z. Exposure to perfluoroalkyl substances and allergic outcomes in children: A systematic review and meta-analysis. ENVIRONMENTAL RESEARCH 2020; 191:110145. [PMID: 32877702 DOI: 10.1016/j.envres.2020.110145] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 08/21/2020] [Accepted: 08/24/2020] [Indexed: 05/27/2023]
Abstract
BACKGROUND Perfluoroalkyl substances (PFASs) are persistent organic pollutants and widespread throughout the environment. Although exposure to PFASs may contribute to the development of allergic diseases in children, evidence about this association remains inconclusive. OBJECTIVE To conduct a systematic review and meta-analysis to assess the association between PFASs exposure and allergic diseases in children based on current evidence. METHODS The databases including PubMed, EMBASE, and Web of Science were searched to identify all observational studies that examined the association between PFASs exposure and the risk of childhood allergic diseases. The Newcastle-Ottawa Scale was used to evaluate the quality of case-crossover studies, and a previously validated quality assessment framework was used for observational studies lacking control groups. Random-effects meta-analysis models were applied to pool odds ratio (OR) with 95% confidence intervals (CIs). RESULTS From an initial 94 articles (after duplicate removal), 13 studies through full-text assessment were included for quantitative assessment and descriptive synthesis. They are ten cohort studies, two cross-sectional studies, and one case-control study. The pooled estimates showed that perfluorononanoic acid (PFNA) was associated with eczema (OR = 0.89, 95% CI = 0.80-0.99), perfluorooctanesulfonic acid (PFOS) with atopic dermatitis (OR = 1.26, 95% CI = 1.01-1.58), and perfluorooctanoic acid (PFOA) with allergic rhinitis (OR = 1.33, 95% CI = 1.13-1.56). However, no such significant associations were found for wheeze and asthma. CONCLUSIONS The meta-analysis results suggest that PFASs exposure could potentially be associated with eczema, atopic dermatitis, and allergic rhinitis during childhood, but not with childhood asthma or wheeze. Future studies are needed to verify these findings.
Collapse
Affiliation(s)
- Yuehua Luo
- Department of Preventive Medicine, School of Health Sciences, Wuhan University, Wuhan, 430071, PR China
| | - Zhuoma Deji
- Department of Preventive Medicine, School of Health Sciences, Wuhan University, Wuhan, 430071, PR China
| | - Zhenzhen Huang
- Department of Preventive Medicine, School of Health Sciences, Wuhan University, Wuhan, 430071, PR China.
| |
Collapse
|
7
|
Schrenk D, Bignami M, Bodin L, Chipman JK, del Mazo J, Grasl‐Kraupp B, Hogstrand C, Hoogenboom L(R, Leblanc J, Nebbia CS, Nielsen E, Ntzani E, Petersen A, Sand S, Vleminckx C, Wallace H, Barregård L, Ceccatelli S, Cravedi J, Halldorsson TI, Haug LS, Johansson N, Knutsen HK, Rose M, Roudot A, Van Loveren H, Vollmer G, Mackay K, Riolo F, Schwerdtle T. Risk to human health related to the presence of perfluoroalkyl substances in food. EFSA J 2020; 18:e06223. [PMID: 32994824 PMCID: PMC7507523 DOI: 10.2903/j.efsa.2020.6223] [Citation(s) in RCA: 223] [Impact Index Per Article: 55.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The European Commission asked EFSA for a scientific evaluation on the risks to human health related to the presence of perfluoroalkyl substances (PFASs) in food. Based on several similar effects in animals, toxicokinetics and observed concentrations in human blood, the CONTAM Panel decided to perform the assessment for the sum of four PFASs: PFOA, PFNA, PFHxS and PFOS. These made up half of the lower bound (LB) exposure to those PFASs with available occurrence data, the remaining contribution being primarily from PFASs with short half-lives. Equal potencies were assumed for the four PFASs included in the assessment. The mean LB exposure in adolescents and adult age groups ranged from 3 to 22, the 95th percentile from 9 to 70 ng/kg body weight (bw) per week. Toddlers and 'other children' showed a twofold higher exposure. Upper bound exposure was 4- to 49-fold higher than LB levels, but the latter were considered more reliable. 'Fish meat', 'Fruit and fruit products' and 'Eggs and egg products' contributed most to the exposure. Based on available studies in animals and humans, effects on the immune system were considered the most critical for the risk assessment. From a human study, a lowest BMDL 10 of 17.5 ng/mL for the sum of the four PFASs in serum was identified for 1-year-old children. Using PBPK modelling, this serum level of 17.5 ng/mL in children was estimated to correspond to long-term maternal exposure of 0.63 ng/kg bw per day. Since accumulation over time is important, a tolerable weekly intake (TWI) of 4.4 ng/kg bw per week was established. This TWI also protects against other potential adverse effects observed in humans. Based on the estimated LB exposure, but also reported serum levels, the CONTAM Panel concluded that parts of the European population exceed this TWI, which is of concern.
Collapse
|
8
|
Guo J, Wu P, Cao J, Luo Y, Chen J, Wang G, Guo W, Wang T, He X. The PFOS disturbed immunomodulatory functions via nuclear Factor-κB signaling in liver of zebrafish (Danio rerio). FISH & SHELLFISH IMMUNOLOGY 2019; 91:87-98. [PMID: 31082517 DOI: 10.1016/j.fsi.2019.05.018] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 05/08/2019] [Accepted: 05/09/2019] [Indexed: 05/18/2023]
Abstract
Excessive perfluorooctane sulfonate (PFOS) in natural water ecosystem has the potential to detrimentally affect immune system, but little is known of such effects or underlying mechanisms in fish. In the present study, we evaluated the effects of PFOS on growth performance, organizational microstructure, activities of immune-related enzymes and expressions of immune-related genes in male zebrafish (Danio rerio) exposed to different concentrations of 0, 0.02, 0.04 and 0.08 mg/L of PFOS for 7, 14, and 21 days or cotreatment with PFOS and PDTC to investigate the effects of PFOS on immune system and the potential toxic mechanisms caused by PFOS. The results indicated that PFOS accumulated in livers after exposure, and remarkably elevations were found in three exposure groups compared with the control group at three stages. The growth of the adult zebrafish in the experiments was significantly inhibited, the microstructures of liver were serious damaged. The ROS levels were remarkably increased. The activities of ACP, AKP, and lysozyme were obviously decreased, while the activities of MPO and NF-κB were significantly increased. The expressions of immune-related mRNA were significantly affected. After co-treatment with PFOS and PDTC, the growth inhibition, the morphological damage, the ROS induction, and the expressions of immune-related mRNA were reversed. Taken together, the results indicated that PFOS can significantly inhibit the growth, disturb the immune system by changing the normal structure of liver, the activities of immune-related enzymes, and a series of gene transcriptions involved in immune regulation in liver of male zebrafish. PFOS-induced pro-inflammatory effect of hepatocytes was observed, and the involvement of NF-κB signaling pathway was participated in its action mechanism. These findings provide further evidence that PFOS interferes with the immune regulation of liver of male zebrafish under in vivo conditions.
Collapse
Affiliation(s)
- Jinshu Guo
- State Key Laboratory of Ecological Animal Husbandry and Environment Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, shanxi, China
| | - Panhong Wu
- State Key Laboratory of Ecological Animal Husbandry and Environment Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, shanxi, China
| | - Jinling Cao
- State Key Laboratory of Ecological Animal Husbandry and Environment Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, shanxi, China.
| | - Yongju Luo
- Guangxi Key Laboratory of Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Acedemy of Fishery Science, Nanning, 530021, Guangxi, China.
| | - Jianjie Chen
- State Key Laboratory of Ecological Animal Husbandry and Environment Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, shanxi, China
| | - Guodong Wang
- State Key Laboratory of Ecological Animal Husbandry and Environment Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, shanxi, China
| | - Wenjing Guo
- State Key Laboratory of Ecological Animal Husbandry and Environment Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, shanxi, China
| | - Tianyu Wang
- State Key Laboratory of Ecological Animal Husbandry and Environment Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, shanxi, China
| | - Xinjing He
- State Key Laboratory of Ecological Animal Husbandry and Environment Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, shanxi, China
| |
Collapse
|
9
|
Ameliorative effect of chlorin e6-mediated photodynamic therapy on DNCB-induced atopic dermatitis-like skin lesions in mice. Mol Cell Toxicol 2019. [DOI: 10.1007/s13273-019-0030-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
10
|
Ara J, Bajgai J, Sajo MEJ, Fadriquela A, Kim CS, Kim SK, Lee KJ. The immunological and oxidative stress regulation of non-thermal plasma-aided water on atopic dermatitis-like lesion in dinitrochlorobenzene-induced SKH-1 hairless mice. Mol Cell Toxicol 2019. [DOI: 10.1007/s13273-019-0023-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
11
|
Kong B, Wang X, He B, Wei L, Zhu J, Jin Y, Fu Z. 8:2 fluorotelomer alcohol inhibited proliferation and disturbed the expression of pro-inflammatory cytokines and antigen-presenting genes in murine macrophages. CHEMOSPHERE 2019; 219:1052-1060. [PMID: 30558807 DOI: 10.1016/j.chemosphere.2018.12.091] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 10/23/2018] [Accepted: 12/11/2018] [Indexed: 06/09/2023]
Abstract
Fluorotelomer alcohols (FTOHs, F(CF2)nCH2CH2OH) are members of per- and polyfluoroalkyl substances (PFASs) and are increasingly used in surfactant and polymer industries. FTOHs pose hepatotoxicity, nephrotoxicity and endocrine-disrupting risks. Nevertheless, there is limited research on the immunotoxic effects of FTOHs. In this study, we examined the immunotoxicity of 8:2 FTOH (n = 8) on murine macrophage cell line RAW 264.7. The results showed that 8:2 FTOH exposure reduced cell viability in dose- and time-dependent manners, inhibited cell proliferation and caused cell cycle arrest. Exposure to 8:2 FTOH downregulated the mRNA expression of some cell cycle-related genes, including Cdk4, Ccnd1, Ccne1, and p53, but also upregulated the mRNA expression of other cell cycle related genes, including Ccna2, p21, and p27. Additionally, exposure to 8:2 FTOH under unstimulated and LPS-stimulated conditions downregulated the mRNA expression of pro-inflammatory genes, including Il1b, Il6, Cxcl1, and Tnfa, and secreted levels of IL-6 and TNF-α. Treatment with 8:2 FTOH upregulated the mRNA expression of antigen-presenting-related genes, including H2-K1, H2-Ka, Cd80, and Cd86. The abovementioned immunotoxic effects caused by 8:2 FTOH in RAW 264.7 cells were partially or completely blocked by co-treatment with hydralazine hydrochloride (Hyd), a reactive carbonyl species (RCS) scavenger. However, exposure to 8:2 FTOH did not exhibit any effects on intracellular reactive oxygen species (ROS) level with or without LPS stimulation. Taken together, these results suggest that 8:2 FTOH may have immunotoxic effects on macrophages and RCS may underlie the responsible mechanism. The present study aids in understanding the health risks caused by FTOHs.
Collapse
Affiliation(s)
- Baida Kong
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Xia Wang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Bingnan He
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Lai Wei
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jianbo Zhu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yuanxiang Jin
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Zhengwei Fu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China.
| |
Collapse
|