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Chao CT, Kuo FC, Lin SH. Epigenetically regulated inflammation in vascular senescence and renal progression of chronic kidney disease. Semin Cell Dev Biol 2024; 154:305-315. [PMID: 36241561 DOI: 10.1016/j.semcdb.2022.09.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/08/2022] [Accepted: 09/26/2022] [Indexed: 11/05/2022]
Abstract
Chronic kidney disease (CKD) and its complications, including vascular senescence and progressive renal fibrosis, are associated with inflammation. Vascular senescence, in particular, has emerged as an instrumental mediator of vascular inflammation that potentially worsens renal function. Epigenetically regulated inflammation involving histone modification, DNA methylation, actions of microRNAs and other non-coding RNAs, and their reciprocal reactions during vascular senescence and inflammaging are underappreciated. Their synergistic effects can contribute to CKD progression. Vascular senotherapeutics or pharmacological anti-senescent therapies based on epigenetic machineries can therefore be plausible options for ameliorating vascular aging and even halting the worsening of renal fibrosis. These include histone deacetylase modulators, histone methyltransferase modulators, other histone modification effectors, DNA methyltransferase inhibitors, telomerase reverse transcriptase enhancers, microRNA mimic delivery, and small molecules with microRNA-regulating potentials. Some of these molecules have already been tested and have shown anecdotal evidence for treating uremic vasculopathy and renal fibrosis, supporting the feasibility of this approach.
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Affiliation(s)
- Chia-Ter Chao
- Nephrology division, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan; Nephrology division, Department of Internal Medicine, National Taiwan University College of Medicine, Taipei, Taiwan; Graduate Institute of Toxicology, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Feng-Chih Kuo
- Division of Endocrinology, Department of Internal Medicine, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
| | - Shih-Hua Lin
- Nephrology division, Department of Internal Medicine, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan.
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El Amine Z, Mauger JF, Imbeault P. Human Preadipocytes Differentiated under Hypoxia following PCB126 Exposure during Proliferation: Effects on Differentiation, Glucose Uptake and Adipokine Profile. Cells 2023; 12:2326. [PMID: 37759548 PMCID: PMC10527447 DOI: 10.3390/cells12182326] [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: 08/09/2023] [Revised: 09/09/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
Persistent organic pollutants (POPs) accumulation and hypoxia are two factors proposed to adversely alter adipose tissue (AT) functions in the context of excess adiposity. Studies have shown that preadipocytes exposure to dioxin and dioxin-like POPs have the greatest deleterious impact on rodent and immortalized human preadipocyte differentiation, but evidence on human preadipocytes is lacking. Additionally, hypoxia is known to strongly interfere with the dioxin-response pathway. Therefore, we tested the effects of pre-differentiation polychlorinated biphenyl (PCB)126 exposure at 10 µM for 3 days and subsequent differentiation under hypoxia on human subcutaneous adipocytes (hSA) differentiation, glucose uptake and expression of selected metabolism- and inflammation-related genes. Pre-differentiation PCB126 exposure lowered the adenosine triphosphate (ATP) content, glucose uptake and leptin expression of mature adipocytes but had limited effects on differentiation under normoxia (21% O2). Under hypoxia (3% O2), preadipocytes ability to differentiate was significantly reduced as reflected by significant decreased lipid accumulation and downregulation of key adipocyte genes such as peroxisome proliferator-activated receptor gamma (PPARγ) and adiponectin. Hypoxia increased glucose uptake and glucose transporter 1 (GLUT1) expression but abolished the adipocytes insulin response and GLUT4 expression. The expression of pro-inflammatory adipokine interleukin-6 (IL-6) was slightly increased by both PCB126 and hypoxia, while IL-8 expression was significantly increased only following the PCB126-hypoxia sequence. These observations suggest that PCB126 does not affect human preadipocyte differentiation, but does affect the subsequent adipocytes population, as reflected by lower ATP levels and absolute glucose uptake. On the other hand, PCB126 and hypoxia exert additive effects on AT inflammation, an important player in the development of chronic diseases such as type 2 diabetes and cardiovascular diseases.
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Affiliation(s)
- Zeinab El Amine
- School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada; (Z.E.A.); (J.-F.M.)
| | - Jean-François Mauger
- School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada; (Z.E.A.); (J.-F.M.)
| | - Pascal Imbeault
- School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada; (Z.E.A.); (J.-F.M.)
- Institut du savoir Montfort, Hôpital Montfort, Ottawa, ON K1K 0T2, Canada
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Ni W, Xue Q, Zhang S, Yang X, Wu S, He X, Xiao Y, Chang W, Wen Y, Huang Y, Wang YX, Chen D, Yang CX, Pan XF. High quality diet attenuated the positive association between polychlorinated biphenyls and premature mortality among middle-aged and older adults. ENVIRONMENTAL RESEARCH 2023; 231:116031. [PMID: 37156355 DOI: 10.1016/j.envres.2023.116031] [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: 12/08/2022] [Revised: 04/30/2023] [Accepted: 05/01/2023] [Indexed: 05/10/2023]
Abstract
OBJECTIVE Polychlorinated biphenyls (PCBs) have been reported to be a risk factor for premature death, while a high diet quality is thought to lower mortality risk. We aimed to examine whether PCBs were associated with higher all-cause and cause-specific mortality risk and whether such associations could be modified by the diet quality among US middle-aged and older adults. METHODS Included were 1259 participants aged 40 years or older from the 1999-2004 National Health and Nutrition Examination surveys. Exposure to PCBs was assessed in non-fasting serum samples, and mortality status was ascertained through December 31, 2019 using the public-use, linked mortality files. Diet quality was assessed using the Healthy Eating Index-2015 based on 24-h dietary recalls. Cox proportional hazard regression was applied to assess the associations of different PCB congener groups with mortality and the modifying effect by the diet quality. RESULTS During a median follow-up of 17.75 years, 419 deaths occurred, including 131 from cardiovascular disease (CVD) and 102 from cancer. Serum concentrations of dioxin-like PCBs and non-dioxin-like PCBs were significantly associated with all-cause mortality, with hazard ratios (HRs) of 1.84 (95% confidence interval [CI], 1.10, 2.99) and 1.82 (1.09, 3.03) for extreme-tertile comparisons. A significant interaction was noted between dioxin-like PCBs and diet quality (P for interaction: 0.012), with a substantially more pronounced association among participants with a low diet quality (HR, 3.47; 95% CI: 1.29, 9.32), compared to those with a high diet quality (HR, 0.98; 95% CI: 0.40, 2.43). A similar weaker association was observed for total PCBs in participants with a high diet quality (P for interaction: 0.032). However, effect modifications by diet quality were not noted for the associations between different PCB groups and CVD mortality. CONCLUSIONS While our findings need to be validated in other populations and mechanistic studies, they may suggest that a high quality diet could potentially attenuate the harmful effects of chronic PCB exposure.
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Affiliation(s)
- Weigui Ni
- Section of Epidemiology and Population Health, Ministry of Education Key Laboratory of Birth Defects and Related Diseases of Women and Children & National Medical Products Administration Key Laboratory for Technical Research on Drug Products in Vitro and in Vivo Correlation, West China Second University Hospital, Sichuan University; Shuangliu Institute of Women's and Children's Health, Shuangliu Maternal and Child Health Hospital, Chengdu, Sichuan, China; Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Qingping Xue
- Department of Epidemiology and Biostatistics, School of Public Health, Chengdu Medical College, Chengdu, Sichuan, China
| | - Shanshan Zhang
- Section of Epidemiology and Population Health, Ministry of Education Key Laboratory of Birth Defects and Related Diseases of Women and Children & National Medical Products Administration Key Laboratory for Technical Research on Drug Products in Vitro and in Vivo Correlation, West China Second University Hospital, Sichuan University; Shuangliu Institute of Women's and Children's Health, Shuangliu Maternal and Child Health Hospital, Chengdu, Sichuan, China; Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xue Yang
- Section of Epidemiology and Population Health, Ministry of Education Key Laboratory of Birth Defects and Related Diseases of Women and Children & National Medical Products Administration Key Laboratory for Technical Research on Drug Products in Vitro and in Vivo Correlation, West China Second University Hospital, Sichuan University; Shuangliu Institute of Women's and Children's Health, Shuangliu Maternal and Child Health Hospital, Chengdu, Sichuan, China; Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Shiyi Wu
- Section of Epidemiology and Population Health, Ministry of Education Key Laboratory of Birth Defects and Related Diseases of Women and Children & National Medical Products Administration Key Laboratory for Technical Research on Drug Products in Vitro and in Vivo Correlation, West China Second University Hospital, Sichuan University; Shuangliu Institute of Women's and Children's Health, Shuangliu Maternal and Child Health Hospital, Chengdu, Sichuan, China; Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xingcheng He
- Section of Epidemiology and Population Health, Ministry of Education Key Laboratory of Birth Defects and Related Diseases of Women and Children & National Medical Products Administration Key Laboratory for Technical Research on Drug Products in Vitro and in Vivo Correlation, West China Second University Hospital, Sichuan University; Shuangliu Institute of Women's and Children's Health, Shuangliu Maternal and Child Health Hospital, Chengdu, Sichuan, China
| | - Yan Xiao
- Section of Epidemiology and Population Health, Ministry of Education Key Laboratory of Birth Defects and Related Diseases of Women and Children & National Medical Products Administration Key Laboratory for Technical Research on Drug Products in Vitro and in Vivo Correlation, West China Second University Hospital, Sichuan University; Shuangliu Institute of Women's and Children's Health, Shuangliu Maternal and Child Health Hospital, Chengdu, Sichuan, China; Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Wenling Chang
- Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Ying Wen
- Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong, China
| | - Yichao Huang
- Department of Toxicology, School of Public Health, Anhui Medical University, Hefei, China
| | - Yi-Xin Wang
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Da Chen
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, Guangdong, China
| | - Chun-Xia Yang
- Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China.
| | - Xiong-Fei Pan
- Section of Epidemiology and Population Health, Ministry of Education Key Laboratory of Birth Defects and Related Diseases of Women and Children & National Medical Products Administration Key Laboratory for Technical Research on Drug Products in Vitro and in Vivo Correlation, West China Second University Hospital, Sichuan University; Shuangliu Institute of Women's and Children's Health, Shuangliu Maternal and Child Health Hospital, Chengdu, Sichuan, China.
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Dev P, Chakravarty K, Pandey M, Ranjan R, Cyriac M, Mishra VN, Pathak A. Effect Of Persistent Organic Pollutants In Patients With Ischemic Stroke And All Stroke: A Systematic Review And Meta-Analysis. Toxicology 2023:153567. [PMID: 37268249 DOI: 10.1016/j.tox.2023.153567] [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: 02/28/2023] [Revised: 05/19/2023] [Accepted: 05/30/2023] [Indexed: 06/04/2023]
Abstract
The role of environmental contaminants and their association with stroke is still being determined. Association has been shown with air pollution, noise, and water pollution; however, the results are inconsistent across studies. A systematic review and meta-analysis of the effect of persistent organic pollutants (POP) in ischemic stroke patients were conducted; a comprehensive literature search was carried out until 30th June 2021 from different databases. The quality of all the articles which met our inclusion criteria was assessed using Newcastle-Ottawa scaling; five eligible studies were included in our systematic review. The most studied POP in ischemic stroke was polychlorinated biphenyls (PCBs), and they have shown a trend for association with ischemic stroke. The study also revealed that living near a source of POPs contamination constitutes a risk of exposure and an increased risk of ischemic stroke. Although our study provides a strong positive association of POPs with ischemic stroke, more extensive studies must be conducted to prove the association.
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Affiliation(s)
- Priya Dev
- Department of Neurology, Institute of Medical Science, Banaras Hindu University, Varanasi-221005.
| | | | - Manoj Pandey
- Department of Surgical Oncology, Institute of Medical Science, Banaras Hindu University, Varanasi-221005.
| | - Rakesh Ranjan
- Institute of Medical Science, Banaras Hindu University, Varanasi-221005.
| | - Mareena Cyriac
- Department of Neurology, Institute of Medical Science, Banaras Hindu University, Varanasi-221005.
| | - Vijaya Nath Mishra
- Department of Neurology, Institute of Medical Science, Banaras Hindu University, Varanasi-221005.
| | - Abhishek Pathak
- Department of Neurology, Institute of Medical Science, Banaras Hindu University, Varanasi-221005.
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Wu B, Guo X, Feng L, Gao J, Xia W, Xie P, Ma S, Liu H, Zhao D, Qu G, Sun C, Lowe S, Bentley R, Sun Y. Combined exposure to multiple dioxins and dioxin-like polychlorinated biphenyls on hypertension among US adults in NHANES: a cross-sectional study under three statistical models. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:28730-28744. [PMID: 36401011 DOI: 10.1007/s11356-022-24271-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
Dioxins and dioxin-like polychlorinated biphenyls (DL-PCBs) are mainly released as by-products of human activities, often in the form of mixtures, and the potential harm on human health deserves attention. Therefore, our study aimed to analyze the combined effect of dioxins and DL-PCB exposures on hypertension (HTN) among US adults. Data of eligible participants were acquired from the National Health and Nutrition Examination Survey (NHANES). Multiple logistic regression models with adjustment for covariates were applied to explore the associations between 13 persistent organic pollutants (POPs) and HTN. Stratified analyses and interaction analyses were then conducted by age and gender. Finally, the combined effects of dioxins and DL-PCBs on HTN were assessed by the weighted quantile sum (WQS) model and the Bayesian kernel machine regression (BKMR) model. A total of 976 adults were included in our study, of whom 397 had HTN. Spearman correlations indicated positive correlations among 13 POPs. And most of them (except PCB28, PCB66, and 1,2,3,4,7,8,9-hpcdf) had significant effects on HTN. The result of WQS revealed that mixed exposure to dioxins and DL-PCBs was significantly associated with increased risk of HTN (OR: 2.205; 95% CIs: 1.555, 3.127). The BKMR model also presented a positive trend of HTN risk with exposure to multiple dioxins and DL-PCBs. And 1,2,3,4,6,7,8,9-ocdd may be the main factor for this positive association. Considering the limitations of our cross-sectional study with the small sample, further prospective studies are necessary to validate our findings.
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Affiliation(s)
- Birong Wu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Xianwei Guo
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Linya Feng
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Juan Gao
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Weihang Xia
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Peng Xie
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Shaodi Ma
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Haixia Liu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Dongdong Zhao
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Guangbo Qu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China
- Center for Evidence-Based Practice, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Chenyu Sun
- AMITA Health Saint Joseph Hospital Chicago, 2900 N. Lake Shore Drive, Chicago, IL, 60657, USA
| | - Scott Lowe
- College of Osteopathic Medicine, Kansas City University, 1750 Independence Ave, Kansas City, MO, 64106, USA
| | - Rachel Bentley
- College of Osteopathic Medicine, Kansas City University, 1750 Independence Ave, Kansas City, MO, 64106, USA
| | - Yehuan Sun
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China.
- Center for Evidence-Based Practice, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China.
- Chaohu Hospital, Anhui Medical University, No. 64 Chaohubei Road, Hefei, 238006, Anhui, China.
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6
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Jing L, Zheng D, Sun X, Shi Z. DBDPE upregulates NOD-like receptor signaling to induce NLRP3 inflammasome-mediated HAECs pyroptosis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 318:120882. [PMID: 36549449 DOI: 10.1016/j.envpol.2022.120882] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 11/06/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
Decabromodiphenyl ethane (DBDPE), a typical new brominated flame retardant (BFR), is a widespread new pollutant in the environment. Several studies and our previous studies have found that DBDPE can cause aortic endothelial injury and aortic endothelial cell pyroptosis, whereas the molecular mechanism involved has not been elucidated. In this study, we exposed human aortic endothelial cells (HAECs) to 25 μmol/L of DBDPE and analyzed the gene expression profiles by Affymetrix PrimeView™ Human Gene Expression Chip. The results showed that 886 genes were differentially expressed in the DBDPE exposure group. Enrichment analyses revealed that differentially expressed genes were mainly enriched in the inflammatory response and NOD-like receptor signal pathway. Gene-gene functional interaction analyses and crossover genes and pathways analyses found that the NOD-like receptor signal pathway may be involved in regulating NLRP3 and IL-18. We found that NOD2 cannot interact with NLRP3 directly through an immunoprecipitation experiment. Thus, we construct the RIPK2 knockdown HAECs cell line to repress the NOD-like receptor signaling and further study the mechanism of DBDPE-activated NLRP3 inflammasome to induce HAECs pyroptosis. The results showed that RIPK2 knockdown could repress DBDPE-induced NOD-like receptor signaling pathway upregulation, inhibit NLRP3 inflammasome activation, and decrease HAECs pyroptosis. In addition, RIPK2 knockdown decreased the ROS generation in HAECs induced by DBDPE. And NAC pretreated HAECs inhibited DBDPE-induced NLRP3 inflammasome activation and HAECs pyroptosis. These results demonstrated that DBDPE upregulated NOD-like receptor signaling to induce ROS generation and, in turn, activated NLRP3 inflammasome, leading to HAECs pyroptosis.
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Affiliation(s)
- Li Jing
- School of Public Health and Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Dan Zheng
- School of Public Health and Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Xuejing Sun
- School of Public Health and Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Zhixiong Shi
- School of Public Health and Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China.
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7
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Morin SM, Majhi PD, Crisi GM, Gregory KJ, Franca R, Schalet B, Mason H, Casaubon JT, Cao QJ, Haddad S, Makari-Judson G, Jerry DJ, Schneider SS. Interindividual variation contributes to differential PCB 126 induced gene expression in primary breast epithelial cells and tissues. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 241:113722. [PMID: 35724515 DOI: 10.1016/j.ecoenv.2022.113722] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 05/27/2022] [Accepted: 05/29/2022] [Indexed: 06/15/2023]
Abstract
PCB 126 is a pervasive, dioxin-like chemical pollutant which can activate the aryl hydrocarbon receptor (AhR). Despite being banned from the market, PCB 126 can be detected in breast milk to this day. The extent to which interindividual variation impacts the adverse responses to this chemical in the breast tissue remains unclear. This study aimed to investigate the impact of 3 nM PCB 126 on gene expression in a panel of genetically diverse benign human breast epithelial cell (HBEC) cultures and patient derived breast tissues. Six patient derived HBEC cultures were treated with 3 nM PCB 126. RNAseq was used to interrogate the impact of exposure on differential gene expression. Gene expression changes from the top critical pathways were confirmed via qRT-PCR in a larger panel of benign patient derived HBEC cultures, as well as in patient-derived breast tissue explant cultures. RNAseq analysis of HBEC cultures revealed a signature of 144 genes significantly altered by 3 nM PCB 126 treatment. Confirmation of 8 targets using a panel of 12 HBEC cultures and commercially available breast cell lines demonstrated that while the induction of canonical downstream target gene, CYP1A1, was consistent across our primary HBECs, other genes including AREG, S100A8, IL1A, IL1B, MMP7, and CCL28 exhibited significant variability across individuals. The dependence on the activity of the aryl hydrocarbon receptor was confirmed using inhibitors. PCB 126 can induce significant and consistent changes in gene expression associated with xenobiotic metabolism in benign breast epithelial cells. Although the induction of most genes was reliant on the AhR, significant variability was noted between genes and individuals. These data suggest that there is a bifurcation of the pathway following AhR activation that contributes to the variation in interindividual responses.
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Affiliation(s)
- Stephanie M Morin
- Pioneer Valley Life Sciences Institute, Springfield, MA 01199, United States; Dept of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003, United States
| | - Prabin Dhangada Majhi
- Dept of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003, United States
| | - Giovanna M Crisi
- University of Massachusetts Chan Medical School-Baystate, Department of Pathology, Springfield, MA 01199, United States
| | - Kelly J Gregory
- Pioneer Valley Life Sciences Institute, Springfield, MA 01199, United States
| | - Renata Franca
- Pioneer Valley Life Sciences Institute, Springfield, MA 01199, United States
| | - Benjamin Schalet
- University of Massachusetts Chan Medical School-Baystate, Department of Surgery, Springfield, MA 01199, United States
| | - Holly Mason
- University of Massachusetts Chan Medical School-Baystate, Department of Surgery, Springfield, MA 01199, United States
| | - Jesse Thomas Casaubon
- University of Massachusetts Chan Medical School-Baystate, Department of Surgery, Springfield, MA 01199, United States
| | - Qing Jackie Cao
- University of Massachusetts Chan Medical School-Baystate, Department of Pathology, Springfield, MA 01199, United States
| | - Sandra Haddad
- Dept of Science, Bay Path University, Longmeadow, MA 01106, United States
| | - Grace Makari-Judson
- University of Massachusetts Chan Medical School-Baystate, Division of Hematology-Oncology, Springfield, MA, United States
| | - D Joseph Jerry
- Pioneer Valley Life Sciences Institute, Springfield, MA 01199, United States; Dept of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003, United States
| | - Sallie S Schneider
- Pioneer Valley Life Sciences Institute, Springfield, MA 01199, United States; Dept of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003, United States; University of Massachusetts Chan Medical School-Baystate, Department of Surgery, Springfield, MA 01199, United States.
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8
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Goodman S, Chappell G, Guyton KZ, Pogribny IP, Rusyn I. Epigenetic alterations induced by genotoxic occupational and environmental human chemical carcinogens: An update of a systematic literature review. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2022; 789:108408. [PMID: 35690411 PMCID: PMC9188653 DOI: 10.1016/j.mrrev.2021.108408] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 10/28/2021] [Accepted: 12/07/2021] [Indexed: 01/03/2023]
Abstract
Epigenetic alterations, such as changes in DNA methylation, histones/chromatin structure, nucleosome positioning, and expression of non-coding RNAs, are recognized among key characteristics of carcinogens; they may occur independently or concomitantly with genotoxic effects. While data on genotoxicity are collected through standardized guideline tests, data collected on epigenetic effects is far less uniform. In 2016, we conducted a systematic review of published studies of genotoxic carcinogens that reported epigenetic endpoints to better understand the evidence for epigenetic alterations of human carcinogens, and the potential association with genotoxic endpoints. Since then, the number of studies of epigenetic effects of chemicals has nearly doubled. This review stands as an update on epigenetic alterations induced by occupational and environmental human carcinogens that were previously and recently classified as Group 1 by the International Agency for Research on Cancer. We found that the evidence of epigenetic effects remains uneven across agents. Studies of DNA methylation are most abundant, while reports concerning effects on non-coding RNA have increased over the past 5 years. By contrast, mechanistic toxicology studies of histone modifications and chromatin state alterations remain few. We found that most publications of epigenetic effects of carcinogens were studies in exposed humans or human cells. Studies in rodents represent the second most common species used for epigenetic studies in toxicology, in vivo exposures being the most predominant. Future studies should incorporate dose- and time-dependent study designs and also investigate the persistence of effects following cessation of exposure, considering the dynamic nature of most epigenetic alterations.
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Affiliation(s)
- Samantha Goodman
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, USA
| | | | | | - Igor P Pogribny
- National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR, USA
| | - Ivan Rusyn
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, USA.
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9
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Hudson J, Farkas L. Epigenetic Regulation of Endothelial Dysfunction and Inflammation in Pulmonary Arterial Hypertension. Int J Mol Sci 2021; 22:ijms222212098. [PMID: 34829978 PMCID: PMC8617605 DOI: 10.3390/ijms222212098] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/05/2021] [Accepted: 11/06/2021] [Indexed: 12/13/2022] Open
Abstract
Once perceived as a disorder treated by vasodilation, pulmonary artery hypertension (PAH) has emerged as a pulmonary vascular disease with severe endothelial cell dysfunction. In the absence of a cure, many studies seek to understand the detailed mechanisms of EC regulation to potentially create more therapeutic options for PAH. Endothelial dysfunction is characterized by complex phenotypic changes including unchecked proliferation, apoptosis-resistance, enhanced inflammatory signaling and metabolic reprogramming. Recent studies have highlighted the role of epigenetic modifications leading to pro-inflammatory response pathways, endothelial dysfunction, and the progression of PAH. This review summarizes the existing literature on epigenetic mechanisms such as DNA methylation, histone modifications, and non-coding RNAs, which can lead to aberrant endothelial function. Our goal is to develop a conceptual framework for immune dysregulation and epigenetic changes in endothelial cells in the context of PAH. These studies as well as others may lead to advances in therapeutics to treat this devastating disease.
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10
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Avenbuan ON, Meltzer GY, Awada C, Raja A, Holian A, Zelikoff JT. A contemporary review of electronic waste through the lens of inhalation toxicology. Inhal Toxicol 2021; 33:285-294. [PMID: 34715768 DOI: 10.1080/08958378.2021.1996493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Inhalation is a significant route of exposure to toxic chemicals for electronic waste (e-waste) workers, especially for those whose activities take place in the informal sector. However, there remains a dearth of research on the health effects produced by the hazardous dismantling of e-waste and associated outcomes and biological mechanisms that occur as a result of inhalation exposure. This contemporary review highlights a number of the toxicological and epidemiological studies published on this topic to bring to light the many knowledge gaps that require further research, including in vitro and ex vivo investigations to address the health outcomes and underlying mechanisms of inhaled e-waste-associated pulmonary disease.
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Affiliation(s)
- Oyemwenosa N Avenbuan
- Department of Environmental Medicine, New York University Grossman School of Medicine, New York, NY, USA
| | - Gabriella Y Meltzer
- Department of Social and Behavioral Sciences, New York University School of Global Public Health, New York, NY, USA
| | - Christina Awada
- Department of Environmental Medicine, New York University Grossman School of Medicine, New York, NY, USA
| | - Amna Raja
- Department of Environmental Medicine, New York University Grossman School of Medicine, New York, NY, USA
| | - Andrij Holian
- Department of Biomedical and Pharmaceutical Sciences, University of Montana College of Health, Missoula, MT, USA
| | - Judith T Zelikoff
- Department of Environmental Medicine, New York University Grossman School of Medicine, New York, NY, USA
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11
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Serum levels of polychlorinated biphenyls and stroke risk among Chinese: a hospital-based case-control study. Acta Neurol Belg 2021; 121:1217-1224. [PMID: 32535835 DOI: 10.1007/s13760-020-01392-5] [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: 02/26/2020] [Accepted: 05/29/2020] [Indexed: 10/24/2022]
Abstract
Previous studies have revealed the serious human health risk effects of organic pollutants-polychlorinated biphenyls (PCBs). However, the roles of circulating PCBs on stroke risk have not been elucidated. The purpose of this study was to examine whether serum PCBs could increase the risk for stroke among Chinese participants. A total of 241 patients with stroke and age- (5-year interval) and gender-matched controls were recruited in Tianjin, China. Concentrations of 17 PCB congeners were measured by using high-resolution gas chromatography with mass spectrometric detection. Conditional logistic regression models were applied to assess the odds ratio (OR) and 95% confidential interval (CI). Significant positive associations were observed between serum total PCBs and dioxin-like PCBs and the risk for stroke (all p trends < 0.05), and the adjusted ORs for the highest tertile (T3) of serum concentration compared with the lowest tertile (T1) were 1.704 (1.073, 2.506) and 1.846 (1.156, 2.949). However, no significant association was found for non-dioxin-like PCBs (OR for T3 vs. T1: 1.388, 95%CIs: 0.850, 2.266; p trend: 0.118). Stratified analysis by stroke subtypes (ischemic or hemorrhagic strokes) showed no significant heterogeneity (OR for T3 vs. T1: 1.644 vs. 1.824; p for interaction: 0.458). The results suggest detrimental roles of PCBs, mainly dioxin-like PCBs, in stroke risk, irrespective of stroke subtypes. Further well-designed prospective studies with larger sample size are invited to confirm these associations.
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12
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Ren X, Wang R, Yu XT, Cai B, Guo F. Regulation of histone H3 lysine 9 methylation in inflammation. ALL LIFE 2021. [DOI: 10.1080/26895293.2021.1931477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
- Xin Ren
- Department of Burn, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Rong Wang
- Department of Burn, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Xiao-ting Yu
- Department of Burn, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Bo Cai
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Fei Guo
- Department of Burn, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
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13
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Zheng D, Shi Z, Yang M, Liang B, Zhou X, Jing L, Sun Z. NLRP3 inflammasome-mediated endothelial cells pyroptosis is involved in decabromodiphenyl ethane-induced vascular endothelial injury. CHEMOSPHERE 2021; 267:128867. [PMID: 33187650 DOI: 10.1016/j.chemosphere.2020.128867] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 10/27/2020] [Accepted: 11/01/2020] [Indexed: 06/11/2023]
Abstract
Decabromodiphenyl ethane (DBDPE) is a novel environmental pollutant that has attracted growing attention. Previous studies have indicated that DBDPE could induce vascular endothelial injury and cardiovascular damage, but the underlying mechanisms are not well understood. This study was designed to examine the mechanisms of DBDPE induces vascular endothelial injury. In vivo, Sprague-Dawley rats were administered with 0, 5, 50, 500 mg/kg bw/day of DBDPE via gavage for 28 days. Results showed that DBDPE could damage abdominal aortas morphological and ultrastructural structure and increase the protein levels of interleukin 1β (IL-1β) and interleukin 18 (IL-18) of the abdominal aortas. Moreover, DBDPE induced NLRP3 inflammasome activation and activated caspase-1 in abdominal aorta endothelium of rats. In vitro, human vascular endothelial cells (HAECs) were treated with different concentrations of DBDPE (0, 6.25, 12.5, 25, 50, and 100 μM). DBDPE not only induced cytotoxicity and reactive oxygen species (ROS) generation in HAECs but also caused HAECs pyroptosis, which was evidenced by the elevated expression of Nod-like receptor protein -3 (NLRP3), ASC, and caspase-1 in DBDPE-treated group. To further elucidate the effects of NLRP3 inflammasome on DBDPE-induced HAECs pyroptosis, we constructed NLRP3 knockdown HAECs by lentivirus-mediated short hairpin RNA (shRNA). And the results showed that NLRP3 knockdown downregulated DBDPE-induced increases of caspase-1 activity and caspase-1, ASC and NLRP3 mRNA and protein expression levels. Accordingly, our data suggested that DBDPE may damage vascular endothelium by NLRP3 inflammasome-mediated endothelial cells pyroptosis.
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Affiliation(s)
- Dan Zheng
- School of Public Health and Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Zhixiong Shi
- School of Public Health and Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Man Yang
- School of Public Health and Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Baolu Liang
- School of Public Health and Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Xianqing Zhou
- School of Public Health and Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Li Jing
- School of Public Health and Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China.
| | - Zhiwei Sun
- School of Public Health and Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
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14
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Matelski L, Keil Stietz KP, Sethi S, Taylor SL, Van de Water J, Lein PJ. The influence of sex, genotype, and dose on serum and hippocampal cytokine levels in juvenile mice developmentally exposed to a human-relevant mixture of polychlorinated biphenyls. Curr Res Toxicol 2020; 1:85-103. [PMID: 34296199 PMCID: PMC8294704 DOI: 10.1016/j.crtox.2020.09.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Polychlorinated biphenyls (PCBs) are pervasive environmental contaminants implicated as risk factors for neurodevelopmental disorders (NDDs). Immune dysregulation is another NDD risk factor, and developmental PCB exposures are associated with early life immune dysregulation. Studies of the immunomodulatory effects of PCBs have focused on the higher-chlorinated congeners found in legacy commercial mixtures. Comparatively little is known about the immune effects of contemporary, lower-chlorinated PCBs. This is a critical data gap given recent reports that lower-chlorinated congeners comprise >70% of the total PCB burden in serum of pregnant women enrolled in the MARBLES study who are at increased risk for having a child with an NDD. To examine the influence of PCBs, sex, and genotype on cytokine levels, mice were exposed throughout gestation and lactation to a PCB mixture in the maternal diet, which was based on the 12 most abundant PCBs in sera from MARBLES subjects. Using multiplex array, cytokines were quantified in the serum and hippocampus of weanling mice expressing either a human gain-of-function mutation in ryanodine receptor 1 (T4826I mice), a human CGG premutation repeat expansion in the fragile X mental retardation gene 1 (CGG mice), or both mutations (DM mice). Congenic wildtype (WT) mice were used as controls. There were dose-dependent effects of PCB exposure on cytokine concentrations in the serum but not hippocampus. Differential effects of genotype were observed in the serum and hippocampus. Hippocampal cytokines were consistently elevated in T4826I mice and also in WT animals for some cytokines compared to CGG and DM mice, while serum cytokines were usually elevated in the mutant genotypes compared to the WT group. Males had elevated levels of 19 cytokines in the serum and 4 in the hippocampus compared to females, but there were also interactions between sex and genotype for 7 hippocampal cytokines. Only the chemokine CCL5 in the serum showed an interaction between PCB dose, genotype, and sex. Collectively, these findings indicate differential influences of PCB exposure and genotype on cytokine levels in serum and hippocampal tissue of weanling mice. These results suggest that developmental PCB exposure has chronic effects on baseline serum, but not hippocampal, cytokine levels in juvenile mice.
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Affiliation(s)
- Lauren Matelski
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, CA 95616, USA
| | - Kimberly P. Keil Stietz
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, CA 95616, USA
| | - Sunjay Sethi
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, CA 95616, USA
| | - Sandra L. Taylor
- Division of Biostatistics, Department of Public Health Sciences, University of California, Davis, School of Medicine, Davis, CA 95616, USA
| | - Judy Van de Water
- MIND Institute, University of California, Davis, School of Medicine, Sacramento, CA 95817, USA,Division of Rheumatology, Allergy, and Clinical Immunology, Department of Internal Medicine, University of California, Davis, School of Medicine, Davis, CA 95616, USA
| | - Pamela J. Lein
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, CA 95616, USA,MIND Institute, University of California, Davis, School of Medicine, Sacramento, CA 95817, USA,Corresponding author at: Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, 1089 Veterinary Medicine Drive, Davis, CA 95616, USA.
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15
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Raffetti E, Donat-Vargas C, Mentasti S, Chinotti A, Donato F. Association between exposure to polychlorinated biphenyls and risk of hypertension: A systematic review and meta-analysis. CHEMOSPHERE 2020; 255:126984. [PMID: 32679627 DOI: 10.1016/j.chemosphere.2020.126984] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 04/23/2020] [Accepted: 05/04/2020] [Indexed: 06/11/2023]
Abstract
Experimental and epidemiological studies have suggested an association between exposure to polychlorinated biphenyls (PCBs), ubiquitous environmental toxic compounds, and the risk of hypertension. We conducted a systematic review and meta-analysis of epidemiological studies of the association between PCB exposure and the risk of hypertension. Studies were identified by searching PubMed, Embase and Web of Science and by reviewing reference lists. Study-specific risk estimates comparing the highest versus lowest quantile of PCB distribution were combined using random-effects models. We identified 10 cross-sectional studies, 6 cohort studies, and 1 nested case-control study. A pooled excess risk of hypertension was found for total PCBs (OR 1.70, 95% CI 1.28-2.26), dioxin-like (DL)-PCBs (OR 1.46, 1.19-1.79), but not for non-dioxin like (NDL)-PCBs (OR 1.19, 0.81-1.73) comparing the highest with the lowest quartile of the distribution. According to a dose-response meta-analysis, a linear dose-effect relationship was found for total PCBs [OR 2.23 (95% CI: 1.59-3.14) for 1000 ng PCB/g lipid increase]. This positive association remained when stratifying the analyses by study design (cohort vs cross-sectional studies) and population (general population vs high exposed workers/residents). Among single PCB congeners, DL-PCB 105 and 118, and non-DL-PCB138 and 153 were related to hypertension. In conclusion, this meta-analysis suggests that exposure to PCBs, particularly to DL-PCBs, may be a risk factor for hypertension, independently of other risk factors.
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Affiliation(s)
- Elena Raffetti
- Department of Global Public Health, Karolinska Institutet, Sweden.
| | - Carolina Donat-Vargas
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Preventive Medicine and Public Health, School of Medicine, Universidad Autónoma de Madrid, CEI UAM+CSIC, Madrid, Spain; CIBERESP (CIBER of Epidemiology and Public Health) Instituto de Salud Carlos III, Madrid, Spain
| | - Sara Mentasti
- Department of Medical and Surgical Specialties Radiological Sciences and Public Health, Unit of Hygiene, Epidemiology, and Public Health, University of Brescia, Italy
| | - Annalisa Chinotti
- Department of Medical and Surgical Specialties Radiological Sciences and Public Health, Unit of Hygiene, Epidemiology, and Public Health, University of Brescia, Italy
| | - Francesco Donato
- Department of Medical and Surgical Specialties Radiological Sciences and Public Health, Unit of Hygiene, Epidemiology, and Public Health, University of Brescia, Italy
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16
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Curtis SW, Cobb DO, Kilaru V, Terrell ML, Marder ME, Barr DB, Marsit CJ, Marcus M, Conneely KN, Smith AK. Genome-wide DNA methylation differences and polychlorinated biphenyl (PCB) exposure in a US population. Epigenetics 2020; 16:338-352. [PMID: 32660331 DOI: 10.1080/15592294.2020.1795605] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Exposure to polychlorinated biphenyls (PCBs), an endocrine-disrupting compound, is ubiquitous despite decades-old bans on the manufacture and use of PCBs. Increased exposure to PCBs is associated with adverse health consequences throughout life, including type 2 diabetes and cancer. PCB exposure is also associated with alterations in epigenetic marks and gene transcription, which could lead to adverse health outcomes, but many of these are population-specific. To further investigate the association between PCB and epigenetic marks, DNA methylation was measured at 787,684 CpG sites in 641 peripheral blood samples from the Michigan Polybrominated Biphenyl (PBB) Registry. 1345 CpGs were associated with increased total PCB level after controlling for age, sex, and 24 surrogate variables (FDR < 0.05). These CpGs were enriched in active promoter and transcription associated regions (p < 0.05), and in regions around the binding sites for transcription factors involved in xenobiotic metabolism and immune function (FDR < 0.05). PCB exposure also associated with proportions of CD4T, NK, and granulocyte cell types, and with the neutrophil to lymphocyte ratio (NLR) (p < 0.05), and the estimated effect sizes of PCB on the epigenome were correlated with the effect sizes previously reported in an epigenome-wide study of C-reactive protein (r = 0.29; p = 2.22e-5), supporting previous studies on the association between PCB and immune dysfunction. These results indicate that PCB exposure is associated with differences in epigenetic marks in active regions of the genome, and future work should investigate whether these may mediate the association between PCB and health consequences.
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Affiliation(s)
- Sarah W Curtis
- Genetics and Molecular Biology Program, Laney Graduate School, Emory University School of Medicine , Atlanta, GA, USA
| | - Dawayland O Cobb
- Department of Gynecology and Obstetrics, Emory University School of Medicine , Atlanta, GA, USA
| | - Varun Kilaru
- Department of Gynecology and Obstetrics, Emory University School of Medicine , Atlanta, GA, USA
| | - Metrecia L Terrell
- Department of Epidemiology, Emory University Rollins School of Public Health , Atlanta, GA, USA
| | - M Elizabeth Marder
- Gangarosa Department of Environmental Health, Emory University Rollins School of Public Health , Atlanta, GA, USA
| | - Dana Boyd Barr
- Gangarosa Department of Environmental Health, Emory University Rollins School of Public Health , Atlanta, GA, USA
| | - Carmen J Marsit
- Gangarosa Department of Environmental Health, Emory University Rollins School of Public Health , Atlanta, GA, USA
| | - Michele Marcus
- Departments of Epidemiology and Department of Pediatrics Emory University School of Medicine, Environmental Health, Emory University Rollins School of Public Health , Atlanta, GA, USA
| | - Karen N Conneely
- Department of Human Genetics, Emory University School of Medicine , Atlanta, GA, USA
| | - Alicia K Smith
- Departments of Gynecology and Obstetrics & Psychiatry and Behavioral Science, Emory University School of Medicine , Atlanta, GA, USA
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17
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Peinado FM, Artacho-Cordón F, Barrios-Rodríguez R, Arrebola JP. Influence of polychlorinated biphenyls and organochlorine pesticides on the inflammatory milieu. A systematic review of in vitro, in vivo and epidemiological studies. ENVIRONMENTAL RESEARCH 2020; 186:109561. [PMID: 32668538 DOI: 10.1016/j.envres.2020.109561] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 04/10/2020] [Accepted: 04/19/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) are relevant families of persistent organic pollutants, which have been linked to several long-term adverse health effects. The mechanisms of action of these pollutants are still poorly understood. However, there are some evidences suggesting that inflammation might play a key role on their effects. AIM To systematically synthesize the published in vitro, in vivo and epidemiological data assessing the potential influence of exposure to OCPs and PCBs on the development of an inflammatory milieu. METHODS A systematic review of peer-reviewed original research papers published until 1st May 2019 was conducted, by using Medline, Web of Science and Scopus databases. A total of 39 articles met the inclusion criteria and were evaluated in this review. RESULTS The majority of the studies showed significant associations of PCB and OCP exposure with all inflammatory markers measured (n = 30). Some studies showed positive and negative associations (n = 7) and only two studies evidenced negative associations (n = 2). Most of the available evidences came from in vitro and in vivo studies (n = 31), with few epidemiological studies (n = 8). CONCLUSIONS We found consistent positive associations between exposure to PCBs and OCPs and the development of a pro-inflammatory milieu, with only few discrepancies. However, given the limited epidemiological evidence found, our results warrant further research in order to elucidate the real contribution of these pollutants on the inflammatory processes and subsequent diseases.
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Affiliation(s)
- F M Peinado
- Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain
| | - F Artacho-Cordón
- Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain; University of Granada, Radiology and Physical Medicine Department, Granada, Spain; CIBER Epidemiology and Public Health (CIBERESP), Spain.
| | - R Barrios-Rodríguez
- Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain; University of Granada, Department of Preventive Medicine and Public Health, Granada, Spain; CIBER Epidemiology and Public Health (CIBERESP), Spain
| | - J P Arrebola
- Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain; University of Granada, Department of Preventive Medicine and Public Health, Granada, Spain; CIBER Epidemiology and Public Health (CIBERESP), Spain.
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18
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Grimm FA, Klaren WD, Li X, Lehmler HJ, Karmakar M, Robertson LW, Chiu WA, Rusyn I. Cardiovascular Effects of Polychlorinated Biphenyls and Their Major Metabolites. ENVIRONMENTAL HEALTH PERSPECTIVES 2020; 128:77008. [PMID: 32701041 PMCID: PMC7377239 DOI: 10.1289/ehp7030] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
BACKGROUND Xenobiotic metabolism is complex, and accounting for bioactivation and detoxification processes of chemicals remains among the most challenging aspects for decision making with in vitro new approach methods data. OBJECTIVES Considering the physiological relevance of human organotypic culture models and their utility for high-throughput screening, we hypothesized that multidimensional chemical-biological profiling of chemicals and their major metabolites is a sensible alternative for the toxicological characterization of parent molecules vs. metabolites in vitro. METHODS In this study, we tested 25 polychlorinated biphenyls (PCBs) [PCB 3, 11, 52, 126, 136, and 153 and their relevant metabolites (hydroxylated, methoxylated, sulfated, and quinone)] in concentration-response (10 nM-100μM) for effects in human induced pluripotent stem cell (iPSC)-derived cardiomyocytes (CMs) and endothelial cells (ECs) (iPSC-derived and HUVECs). Functional phenotypic end points included effects on beating parameters and intracellular Ca2+ flux in CMs and inhibition of tubulogenesis in ECs. High-content imaging was used to evaluate cytotoxicity, mitochondrial integrity, and oxidative stress. RESULTS Data integration of a total of 19 physicochemical descriptors and 36 in vitro phenotypes revealed that chlorination status and metabolite class are strong predictors of the in vitro cardiovascular effects of PCBs. Oxidation of PCBs, especially to di-hydroxylated and quinone metabolites, was associated with the most pronounced effects, whereas sulfation and methoxylation of PCBs resulted in diminished bioactivity. DISCUSSION Risk characterization analysis showed that although in vitro derived effective concentrations exceeded the levels measured in the general population, risks cannot be ruled out due to the potential for population variability in susceptibility and the need to fill data gaps using read-across approaches. This study demonstrated a strategy for how in vitro data can be used to characterize human health risks from PCBs and their metabolites. https://doi.org/10.1289/EHP7030.
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Affiliation(s)
- Fabian A. Grimm
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
| | - William D. Klaren
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
| | - Xueshu Li
- Department of Occupational and Environmental Health, College of Public Health, The University of Iowa, Iowa City, Iowa, USA
| | - Hans-Joachim Lehmler
- Department of Occupational and Environmental Health, College of Public Health, The University of Iowa, Iowa City, Iowa, USA
| | - Moumita Karmakar
- Department of Statistics, College of Science, Texas A&M University, College Station, Texas, USA
| | - Larry W. Robertson
- Department of Occupational and Environmental Health, College of Public Health, The University of Iowa, Iowa City, Iowa, USA
| | - Weihsueh A. Chiu
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
| | - Ivan Rusyn
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
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19
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Donat-Vargas C, Moreno-Franco B, Laclaustra M, Sandoval-Insausti H, Jarauta E, Guallar-Castillon P. Exposure to dietary polychlorinated biphenyls and dioxins, and its relationship with subclinical coronary atherosclerosis: The Aragon Workers' Health Study. ENVIRONMENT INTERNATIONAL 2020; 136:105433. [PMID: 31918334 DOI: 10.1016/j.envint.2019.105433] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 12/17/2019] [Accepted: 12/18/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Experimental evidence has revealed that exposure to polychlorinated biphenyls (PCBs) and dioxins directly impairs endothelial function and induces atherosclerosis progression. In the general population, despite a small number of recent studies finding a link between PCBs, and stroke and myocardial infraction, the association with early coronary atherosclerosis has not been examined yet. OBJECTIVE To examine whether dietary exposure to PCBs and dioxins is associated with subclinical coronary atherosclerosis in a middle-aged men. DESIGN Cross-sectional analysis comprising 1844 men in their 50 s and free of cardiovascular disease, who participated in the Aragon Workers' Health Study (AWHS). Individual dietary exposures to PCBs and dioxins were estimated by the contaminant's concentration in food coupled with the corresponding consumption and then participants were classified into quartiles of consumption. Coronary artery calcium score (CACS) was assessed by computerized tomography. We conducted ordered logistic regressions to estimate the odds ratio (OR) and 95% confidence intervals (CIs) for progression to the categories of more coronary artery calcium, adjusting for potential confounders. RESULTS Among the participants, coronary calcium was not shown in 60.1% (n = 1108), 29.8% had a CACS > 0 and <100 (n = 550), and the remaining 10.1% (n = 186) had a CACS ≥ 100. Compared with those in the first quartile of PCBs exposure, those in the fourth one had an increased odds for having coronary calcium (OR 2.02, 95% CI [1.18, 3.47], p trend 0.019) and for having progressed to categories of more intense calcification (OR 2.03, 95% CI [1.21, 3.40], p trend 0.012). However, no association was found between dietary dioxins exposure and prevalent coronary artery calcium. CONCLUSIONS In this general male population, dietary exposure to PCBs, but not to dioxins, was associated with a higher prevalence of coronary calcium and to more intense subclinical coronary atherosclerosis. PCBs exposure seems to increase the risk of coronary disease in men from the very early stages.
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Affiliation(s)
- Carolina Donat-Vargas
- Department of Preventive Medicine and Public Health, School of Medicine, Universidad Autónoma de Madrid, CEI UAM+CSIC, Madrid, Spain; Unit of Nutritional and Cardiovascular Epidemiology, Environmental Medicine Institute (IMM), Karolinska Institutet, Stockholm, Sweden; CIBERESP (CIBER of Epidemiology and Public Health) Instituto de Salud Carlos III, Madrid, Spain
| | - Belén Moreno-Franco
- IIS Aragón, Hospital Universitario Miguel Servet, Universidad de Zaragoza, Spain; CIBERCV Instituto de Salud Carlos III, Madrid, Spain
| | - Martín Laclaustra
- IIS Aragón, Hospital Universitario Miguel Servet, Universidad de Zaragoza, Spain; CIBERCV Instituto de Salud Carlos III, Madrid, Spain; Agencia Aragonesa para la Investigación y el Desarrollo (ARAID), Zaragoza, Spain
| | - Helena Sandoval-Insausti
- Department of Preventive Medicine and Public Health, School of Medicine, Universidad Autónoma de Madrid, CEI UAM+CSIC, Madrid, Spain
| | - Estibaliz Jarauta
- IIS Aragón, Hospital Universitario Miguel Servet, Universidad de Zaragoza, Spain; CIBERCV Instituto de Salud Carlos III, Madrid, Spain
| | - Pilar Guallar-Castillon
- Department of Preventive Medicine and Public Health, School of Medicine, Universidad Autónoma de Madrid, CEI UAM+CSIC, Madrid, Spain; CIBERESP (CIBER of Epidemiology and Public Health) Instituto de Salud Carlos III, Madrid, Spain; Instituto de Investigación IdiPaz, Madrid, Spain; IMDEA-Food Institute, Madrid, Spain.
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20
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Sánchez OF, Lin L, Bryan CJ, Xie J, Freeman JL, Yuan C. Profiling epigenetic changes in human cell line induced by atrazine exposure. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 258:113712. [PMID: 31875570 DOI: 10.1016/j.envpol.2019.113712] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 11/12/2019] [Accepted: 11/30/2019] [Indexed: 05/24/2023]
Abstract
How environmental chemicals can affect and exert their toxic effect at a molecular level has gained significant interest in recent years, not only for understanding their immediate health implications over exposed individuals, but also for their subsequent progeny. Atrazine (ATZ) is a commonly used herbicide in the U.S. and a long-suspected endocrine disrupting chemical. The molecular mechanism conferring long-term adverse health outcomes, however, remain elusive. Here, we explored changes in epigenetic marks that arise after exposure to ATZ at selected doses using image-based analysis coupled with data clustering. Significant decreases in methylated CpG (meCpG) and histone 3 lysine 9 tri-methylated (H3K9me3) were observed in the selected human cell line with a clear spatial preference. Treating cells with ATZ leads to the loss of a subpopulation of cells with high meCpG levels as identified in our clustering and histogram analysis. A similar trend was observed in H3K9me3 potentially attributing to the cross-talking between meCpG and H3K9me3. Changes in meCpG are likely to be associated with alterations in epigenetic enzyme expression levels regulating meCpG and persist after the removal of ATZ source which collectively provide a plausible mechanism for long-term ATZ-induced toxicity.
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Affiliation(s)
- Oscar F Sánchez
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN, 47907, USA; Department of Nutrition and Biochemistry, Pontificia Universidad Javeriana, Bogotá, 110231, Colombia
| | - Li Lin
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Chris J Bryan
- Department of Statistics, Purdue University, West Lafayette, IN, 47907, USA
| | - Junkai Xie
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Jennifer L Freeman
- School of Health Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Chongli Yuan
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN, 47907, USA.
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Abstract
The vasculature not only transports oxygenated blood, metabolites, and waste products but also serves as a conduit for hormonal communication between distant tissues. Therefore, it is important to maintain homeostasis within the vasculature. Recent studies have greatly expanded our understanding of the regulation of vasculature development and vascular-related diseases at the epigenetic level, including by protein posttranslational modifications, DNA methylation, and noncoding RNAs. Integrating epigenetic mechanisms into the pathophysiologic conceptualization of complex and multifactorial vascular-related diseases may provide promising therapeutic approaches. Several reviews have presented detailed discussions of epigenetic mechanisms not including histone methylation in vascular biology. In this review, we primarily discuss histone methylation in vascular development and maturity, and in vascular diseases.
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22
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Donat‐Vargas C, Bellavia A, Berglund M, Glynn A, Wolk A, Åkesson A. Cardiovascular and cancer mortality in relation to dietary polychlorinated biphenyls and marine polyunsaturated fatty acids: a nutritional-toxicological aspect of fish consumption. J Intern Med 2020; 287:197-209. [PMID: 31628875 PMCID: PMC7003855 DOI: 10.1111/joim.12995] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Co-exposure to environmental contaminants present in fish could mitigate the beneficial effects of fish consumption and possibly explain the lack of association observed for mortality in some geographical regions. OBJECTIVE To assess the independent associations of dietary exposure to polychlorinated biphenyls (PCBs) and long-chain omega-3 fish fatty acids intake with cardiovascular and cancer mortality. METHODS We used the prospective population-based Swedish Mammography Cohort and the Cohort of Swedish Men comprising 32 952 women and 36 545 men, free from cancer, cardiovascular disease and diabetes at baseline in 1998. Validated estimates of dietary PCBs and long-chain omega-3 fish fatty acids [i.e. eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)] intake were obtained via a food frequency questionnaire at baseline. Information on death was ascertained through register linkage. RESULTS During a mean follow-up of 15.5 years, we ascertained 16 776 deaths. We observed for cardiovascular mortality, comparing extreme quintiles in multivariable models mutually adjusted for PCBs and EPA-DHA, dose-dependent associations for dietary PCB exposure, hazard ratio (HR) 1.31 (CI 95%: 1.08 to 1.57; P-trend 0.005) and for dietary EPA-DHA intake, HR 0.79 (CI 95%: 0.66 to 0.95; P-trend 0.041). For cancer mortality, no clear associations were discerned. CONCLUSION The beneficial effect of fish consumption on the cardiovascular system seems compromised by co-exposure to PCBs - one likely explanation for the inconsistent associations observed between fish consumption and mortality.
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Affiliation(s)
- C. Donat‐Vargas
- Unit of Cardiovascular and Nutritional EpidemiologyInstitute of Environmental MedicineKarolinska InstitutetStockholmSweden
- Department of Preventive Medicine and Public HealthSchool of MedicineUniversidad Autónoma de Madrid, CEI UAM+CSICMadridSpain
| | - A. Bellavia
- Department of Environmental HealthHarvard T.H. Chan School of Public HealthBostonMAUSA
| | - M. Berglund
- Unit of Cardiovascular and Nutritional EpidemiologyInstitute of Environmental MedicineKarolinska InstitutetStockholmSweden
| | - A. Glynn
- Department of Biomedical Sciences and Veterinary Public HealthSwedish University of Agricultural Sciences (SLU)UppsalaSweden
| | - A. Wolk
- Unit of Cardiovascular and Nutritional EpidemiologyInstitute of Environmental MedicineKarolinska InstitutetStockholmSweden
| | - A. Åkesson
- Unit of Cardiovascular and Nutritional EpidemiologyInstitute of Environmental MedicineKarolinska InstitutetStockholmSweden
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23
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Pavuk M, Serio TC, Cusack C, Cave M, Rosenbaum PF, Birnbaum LS. Hypertension in Relation to Dioxins and Polychlorinated Biphenyls from the Anniston Community Health Survey Follow-Up. ENVIRONMENTAL HEALTH PERSPECTIVES 2019; 127:127007. [PMID: 31858832 PMCID: PMC6957279 DOI: 10.1289/ehp5272] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 11/15/2019] [Accepted: 11/21/2019] [Indexed: 05/19/2023]
Abstract
BACKGROUND In 2014, we conducted a longitudinal study [Anniston Community Health Survey (ACHS II)] 8 y after the baseline (ACHS I). OBJECTIVES We investigated the relationship between persistent chlorinated compounds and hypertension in residents living around the former polychlorinated biphenyl (PCB) production plant in Anniston, Alabama. We also examined the potential role of inflammatory cytokines in those with hypertension. METHODS A total of 338 participants had their blood pressure measured and medications recorded, gave a blood sample, and completed a questionnaire. Prevalent hypertension was defined as taking antihypertensive medication or having systolic blood pressure >140 mmHg and/or diastolic pressure >90 mmHg; incident hypertension used similar criteria in those who developed hypertension since the baseline in 2005-2007. PCB congeners were categorized into structure-activity groups, and toxic equivalencies (TEQs) were calculated for dioxin-like compounds. Descriptive statistics, logistic and linear regressions, as well as Cox proportional hazard models, were used to analyze the associations between exposures and hypertension. RESULTS Prevalent hypertension (78%) in ACHS II showed statistically significant adjusted odds ratios (ORs) for PCBs 74, 99, 138, 153, 167, 177, 183, and 187, ranging from 2.18 [95% confidence interval (CI): 1.10, 4.33] to 2.76 (95% CI: 1.14, 6.73), as well as for two estrogenic-like PCB groups, and the thyroid-like group [ORs ranging from 2.25 (95% CI: 1.07, 4.75) to 2.54 (95% CI: 1.13, 5.74)]. Furthermore, analysis of quartiles demonstrated a monotonic relationship for dioxin-like non-ortho (non-o)-PCB TEQs [fourth vs. first quartile: 3.66 (95% CI: 1.40, 9.56)]. Longitudinal analyses of incident hypertension supported those positive associations. The results were strongest for the di-o-PCBs [hazard ratio (HR)=1.93 (95% CI: 0.93, 4.00)] and estrogenic II PCB group [HR=1.90 (95% CI: 0.96, 3.78)] but were weaker for the dioxin TEQs. DISCUSSION Findings supportive of positive associations were reported for dioxin-like mono-o- and non-o-PCBs as well as for nondioxin-like estrogenic and thyroid-like congeners with prevalent and incident hypertension, suggesting that multiple pathways may be involved in hypertension development. https://doi.org/10.1289/EHP5272.
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Affiliation(s)
- Marian Pavuk
- Agency for Toxic Substances and Disease Registry (ATSDR), Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, USA
| | - Tara C. Serio
- Oak Ridge Institute for Science and Education (ORISE), ATSDR, CDC, Atlanta, Georgia, USA
| | - Caroline Cusack
- Agency for Toxic Substances and Disease Registry (ATSDR), Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, USA
| | - Matt Cave
- University of Louisville, Louisville, Kentucky, USA
| | - Paula F. Rosenbaum
- State University of New York (SUNY) Upstate Medical University, Syracuse, New York, USA
| | - Linda S. Birnbaum
- National Cancer Institute at National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Research Triangle Park, North Carolina, USA
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Wahlang B, Jin J, Beier JI, Hardesty JE, Daly EF, Schnegelberger RD, Falkner KC, Prough RA, Kirpich IA, Cave MC. Mechanisms of Environmental Contributions to Fatty Liver Disease. Curr Environ Health Rep 2019; 6:80-94. [PMID: 31134516 PMCID: PMC6698418 DOI: 10.1007/s40572-019-00232-w] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE Fatty liver disease (FLD) affects over 25% of the global population and may lead to liver-related mortality due to cirrhosis and liver cancer. FLD caused by occupational and environmental chemical exposures is termed "toxicant-associated steatohepatitis" (TASH). The current review addresses the scientific progress made in the mechanistic understanding of TASH since its initial description in 2010. RECENT FINDINGS Recently discovered modes of actions for volatile organic compounds and persistent organic pollutants include the following: (i) the endocrine-, metabolism-, and signaling-disrupting chemical hypotheses; (ii) chemical-nutrient interactions and the "two-hit" hypothesis. These key hypotheses were then reviewed in the context of the steatosis adverse outcome pathway (AOP) proposed by the US Environmental Protection Agency. The conceptual understanding of the contribution of environmental exposures to FLD has progressed significantly. However, because this is a new research area, more studies including mechanistic human data are required to address current knowledge gaps.
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Affiliation(s)
- Banrida Wahlang
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Louisville School of Medicine, Louisville, KY, 40202, USA
- University of Louisville Superfund Research Center, University of Louisville, Louisville, KY, 40202, USA
| | - Jian Jin
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, 40202, USA
| | - Juliane I Beier
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Pittsburgh, Pittsburgh, PA, 15213, USA
- Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Josiah E Hardesty
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Louisville School of Medicine, Louisville, KY, 40202, USA
| | - Erica F Daly
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, 40202, USA
| | - Regina D Schnegelberger
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - K Cameron Falkner
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Louisville School of Medicine, Louisville, KY, 40202, USA
| | - Russell A Prough
- Department of Biochemistry and Molecular Genetics, University of Louisville School of Medicine, Louisville, KY, 40202, USA
| | - Irina A Kirpich
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Louisville School of Medicine, Louisville, KY, 40202, USA
- Hepatobiology & Toxicology COBRE Center, University of Louisville School of Medicine, Louisville, KY, 40202, USA
- University of Louisville Alcohol Research Center, University of Louisville, Louisville, KY, 40202, USA
| | - Matthew C Cave
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Louisville School of Medicine, Louisville, KY, 40202, USA.
- University of Louisville Superfund Research Center, University of Louisville, Louisville, KY, 40202, USA.
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, 40202, USA.
- Department of Biochemistry and Molecular Genetics, University of Louisville School of Medicine, Louisville, KY, 40202, USA.
- Hepatobiology & Toxicology COBRE Center, University of Louisville School of Medicine, Louisville, KY, 40202, USA.
- University of Louisville Alcohol Research Center, University of Louisville, Louisville, KY, 40202, USA.
- The Robley Rex Veterans Affairs Medical Center, Louisville, KY, 40206, USA.
- The Jewish Hospital Liver Transplant Program, Louisville, KY, 40202, USA.
- Kosair Charities Clinical & Translational Research Building, 505 South Hancock Street, Louisville, KY, 40202, USA.
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25
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Curtis SW, Cobb DO, Kilaru V, Terrell ML, Marder ME, Barr DB, Marsit CJ, Marcus M, Conneely KN, Smith AK. Exposure to polybrominated biphenyl and stochastic epigenetic mutations: application of a novel epigenetic approach to environmental exposure in the Michigan polybrominated biphenyl registry. Epigenetics 2019; 14:1003-1018. [PMID: 31200609 DOI: 10.1080/15592294.2019.1629232] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Endocrine-disrupting compounds are associated with altered epigenetic regulation and adverse health outcomes, although inconsistent results suggest that people have varied responses to the same exposure. Interpersonal variation in response to environmental exposures is not identified using standard, population-based methods. However, methods that capture an individual's response, such as analyzing stochastic epigenetic mutations (SEMs), may capture currently missed effects of environmental exposure. To test whether polybrominated biphenyl (PBB) was associated with SEMs, DNA methylation was measured using Illumina's MethylationEPIC array in PBB-exposed individuals, and SEMs were identified. Association was tested using a linear regression with robust sandwich variance estimators, controlling for age, sex, lipids, and cell types. The number of SEMs was variable (range: 119-18,309), and positively associated with age (p = 1.23e-17), but not with sex (p = 0.97). PBBs and SEMs were only positively associated in people who were older when they were exposed (p = 0.02 vs. p = 0.91). Many subjects had SEMs enriched in biological pathways, particularly in pathways involved with xenobiotic metabolism and endocrine function. Higher number of SEMs was also associated with higher age acceleration (intrinsic: p = 1.70e-3; extrinsic: p = 3.59e-11), indicating that SEMs may be associated with age-related health problems. Finding an association between environmental contaminants and higher SEMs may provide insight into individual differences in response to environmental contaminants, as well as into the biological mechanism behind SEM formation. Furthermore, these results suggest that people may be particularly vulnerable to epigenetic dysregulation from environmental exposures as they age.
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Affiliation(s)
- Sarah W Curtis
- a Genetics and Molecular Biology Program, Laney Graduate School, Emory University School of Medicine , Atlanta , GA , USA
| | - Dawayland O Cobb
- b Department of Gynecology and Obstetrics, Emory University School of Medicine , Atlanta , GA , USA
| | - Varun Kilaru
- b Department of Gynecology and Obstetrics, Emory University School of Medicine , Atlanta , GA , USA
| | - Metrecia L Terrell
- c Department of Epidemiology, Emory University Rollins School of Public Health , Atlanta , GA , USA
| | - M Elizabeth Marder
- d Department of Environmental Health, Emory University Rollins School of Public Health , Atlanta , GA , USA
| | - Dana Boyd Barr
- d Department of Environmental Health, Emory University Rollins School of Public Health , Atlanta , GA , USA
| | - Carmen J Marsit
- d Department of Environmental Health, Emory University Rollins School of Public Health , Atlanta , GA , USA
| | - Michele Marcus
- e Departments of Epidemiology, Environmental Health, Emory University Rollins School of Public Health, and Department of Pediatrics Emory University School of Medicine , Atlanta , GA , USA
| | - Karen N Conneely
- f Department of Human Genetics, Emory University School of Medicine , Atlanta , GA , USA
| | - Alicia K Smith
- g Departments of Gynecology and Obstetrics & Psychiatry and Behavioral Science, Emory University School of Medicine , Atlanta , GA , USA
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Åkesson A, Donat-Vargas C, Berglund M, Glynn A, Wolk A, Kippler M. Dietary exposure to polychlorinated biphenyls and risk of heart failure - A population-based prospective cohort study. ENVIRONMENT INTERNATIONAL 2019; 126:1-6. [PMID: 30776745 DOI: 10.1016/j.envint.2019.01.069] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 01/27/2019] [Accepted: 01/28/2019] [Indexed: 05/20/2023]
Abstract
BACKGROUND Beneficial effects of fish consumption on heart failure (HF) may be modified by contaminants in fish. Polychlorinated biphenyls (PCBs) are of particular concern as they have been associated with well-established risk factors of HF, but current data are limited. OBJECTIVES We aimed to assess the association between dietary PCB exposure and risk of HF, accounting for dietary intake of long-chain omega-3 fish fatty acids. DESIGN We used the prospective population-based research structure SIMPLER (previously the Swedish Mammography Cohort and Cohort of Swedish Men) comprising 32,952 women and 36,546 men, free from cancer, cardiovascular disease and diabetes at baseline in 1997. Validated estimates of dietary PCBs and long-chain omega-3 fish fatty acids [eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA)] were obtained via a food frequency questionnaire at baseline. Incident cases of HF were ascertained through register linkage. RESULTS During an average of 12 years of follow-up, we ascertained 2736 and 3128 incident cases of HF in women and men, respectively. In multivariable-adjusted models, mutually adjusted for PCBs and EPA-DHA, the relative risk (RR) for dietary PCB exposure was 1.48 (95% CI 1.12-1.96) in women and 1.42 (95% CI 1.08-1.86) in men, comparing extreme quintiles. Corresponding RRs for EPA-DHA intake were 0.71 (95% CI 0.54-0.93) and 0.82 (95% CI 0.63-1.07), respectively. CONCLUSIONS Dietary exposure to PCBs was associated with an increased risk of HF in both women and men. EPA-DHA intake was associated with a lower risk of HF in women, with a similar tendency in men.
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Affiliation(s)
- Agneta Åkesson
- Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm, Sweden.
| | - Carolina Donat-Vargas
- Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm, Sweden.
| | - Marika Berglund
- Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm, Sweden.
| | - Anders Glynn
- Department of Biomedical Science and Veterinary Public Health, Swedish University of Agricultural Sciences, Box 7028, SE-750 07 Uppsala, Sweden.
| | - Alicja Wolk
- Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm, Sweden.
| | - Maria Kippler
- Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm, Sweden.
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Wang C, Petriello MC, Zhu B, Hennig B. PCB 126 induces monocyte/macrophage polarization and inflammation through AhR and NF-κB pathways. Toxicol Appl Pharmacol 2019; 367:71-81. [PMID: 30768972 DOI: 10.1016/j.taap.2019.02.006] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 01/25/2019] [Accepted: 02/11/2019] [Indexed: 02/07/2023]
Abstract
Polychlorinated biphenyls (PCBs) are persistent organic pollutants that contribute to inflammatory diseases such as atherosclerosis, and macrophages play a key role in the overall inflammatory response. Depending on specific environmental stimuli, macrophages can be polarized either to pro-inflammatory (e.g., M1) or anti-inflammatory (e.g., M2) phenotypes. We hypothesize that dioxin-like PCBs can contribute to macrophage polarization associated with inflammation. To test this hypothesis, human monocytes (THP-1) were differentiated to macrophages and subsequently exposed to PCB 126. Exposure to PCB 126, but not to PCB 153 or 118, significantly induced the expression of inflammatory cytokines, including TNFα and IL-1β, suggesting polarization to the pro-inflammatory M1 phenotype. Additionally, monocyte chemoattractant protein-1 (MCP-1) was increased in PCB 126-activated macrophages, suggesting induction of chemokines which regulate immune cell recruitment and infiltration of monocytes/macrophages into vascular tissues. In addition, oxidative stress sensitive markers including nuclear factor (erythroid-derived 2)-like 2 (NFE2L2; Nrf2) and down-stream genes, such as heme oxygenase 1 (HMOX1) and NAD(P)H quinone oxidoreductase 1 (NQO1), were induced following PCB 126 exposure. Since dioxin-like PCBs may elicit inflammatory cascades through multiple mechanisms, we then pretreated macrophages with both aryl hydrocarbon receptor (AhR) and NF-κB antagonists prior to PCB treatment. The NF-κB antagonist BMS-345541 significantly decreased mRNA and protein levels of multiple cytokines by approximately 50% compared to PCB treatment alone, but the AhR antagonist CH-223191 was protective to a lesser degree. Our data demonstrate the involvement of PCB 126 in macrophage polarization and inflammation, indicating another important role of dioxin-like PCBs in the pathology of atherosclerosis.
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Affiliation(s)
- Chunyan Wang
- University of Kentucky Superfund Research Center, University of Kentucky, Lexington, KY, USA
| | - Michael C Petriello
- University of Kentucky Superfund Research Center, University of Kentucky, Lexington, KY, USA; Cardiovascular Medicine, University of Kentucky, Lexington, KY, USA
| | - Beibei Zhu
- Department of Internal Medicine, Division of Endocrinology, Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY, USA
| | - Bernhard Hennig
- University of Kentucky Superfund Research Center, University of Kentucky, Lexington, KY, USA; Department of Animal and Food Sciences, University of Kentucky, Lexington, KY, USA.
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28
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Zhi H, Wu JP, Lu LM, Zhang XM, Chen XY, Wu SK, Tao J, Mai BX. Decarbromodiphenyl ether (BDE-209) promotes monocyte-endothelial adhesion in cultured human aortic endothelial cells through upregulating intercellular adhesion molecule-1. ENVIRONMENTAL RESEARCH 2019; 169:62-71. [PMID: 30419430 DOI: 10.1016/j.envres.2018.10.035] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 10/27/2018] [Accepted: 10/27/2018] [Indexed: 06/09/2023]
Abstract
There is growing evidence that exposure to persistent organic pollutants (POPs) is statistically associated with incidence of cardiovascular disease (CVD) or its risk factors. Decarbromodiphenyl ether (BDE-209) is a new POP which exists extensively in human tissues, but its potential effects on CVD have so far received less focus. The adhesion of circulating monocytes to endothelial cells is one of the critical underlying steps in the initiation and development of CVD. In the present study, we investigated the effect of BDE-209 on the adhesion of THP-1 monocytes to human aortic endothelial cells (HAECs) and identified the molecular mechanisms involved. Our results showed that 6.25, 12.5 and 25 µM of BDE-209 exposures caused significant increases in monocyte-endothelial cell adhesion, in a dose-dependent manner. Mechanistically, BDE-209 exposure increased the expression of intercellular adhesion molecule-1 (ICAM-1). Moreover, the up-regulation of ICAM-1 was accompanied by a decrease in the expression of microRNA-141 (miR-141). Furthermore, the up-regulation of ICAM-1 and the increased adhesion induced by BDE-209 could be reversed by miR-141 supplement. Taken together, our results show that BDE-209 potentiates monocyte-endothelial cell interaction via miR-141/ICAM-1 pathway in HAECs.
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Affiliation(s)
- Hui Zhi
- School of Basic Medical Sciences, Wannan Medical College, Wuhu 241003, China; Department of Hypertension and Vascular Disease, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Jiang-Ping Wu
- College of Environmental Science and Engineering, Anhui Normal University, Wuhu 241003, China.
| | - Lin-Ming Lu
- School of Basic Medical Sciences, Wannan Medical College, Wuhu 241003, China
| | - Xue-Mei Zhang
- Department of Hypertension and Vascular Disease, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Xiao-Yun Chen
- College of Environmental Science and Engineering, Anhui Normal University, Wuhu 241003, China
| | - Si-Kang Wu
- College of Environmental Science and Engineering, Anhui Normal University, Wuhu 241003, China
| | - Jun Tao
- Department of Hypertension and Vascular Disease, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China.
| | - Bi-Xian Mai
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
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29
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Curtis SW, Cobb DO, Kilaru V, Terrell ML, Kennedy EM, Marder ME, Barr DB, Marsit CJ, Marcus M, Conneely KN, Smith AK. Exposure to polybrominated biphenyl (PBB) associates with genome-wide DNA methylation differences in peripheral blood. Epigenetics 2019; 14:52-66. [PMID: 30676242 DOI: 10.1080/15592294.2019.1565590] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
In 1973, Michigan residents were exposed to polybrominated biphenyl (PBB) when it was accidentally added to farm animal feed. Highly exposed individuals and their children have experienced endocrine-related health problems, though the underlying mechanism behind these remains unknown. We investigated whether PBB exposure is associated with variation in DNA methylation in peripheral blood samples from 658 participants of the Michigan PBB registry using the MethylationEPIC BeadChip, as well as investigated what the potential function of the affected regions are and whether these epigenetic marks are known to associate with endocrine system pathways. After multiple test correction (FDR <0.05), 1890 CpG sites associated with total PBB levels. These CpGs were not enriched in any particular biological pathway, but were enriched in enhancer and insulator regions, and depleted in regions near the transcription start site or in CpG islands (p < 0.05). They were also more likely to be in ARNT and ESR2 transcription factor binding sites (p = 3.27e-23 and p = 1.62e-6, respectively), and there was significant overlap between CpGs associated with PBB and CpGs associated with estrogen (p < 2.2e-16). PBB-associated CpGs were also enriched for CpGs known to be associated with gene expression in blood (eQTMs) (p < 0.05). These eQTMs were enriched for pathways related to immune function and endocrine-related autoimmune disease (FDR <0.05). These results indicate that exposure to PBB is associated with differences in epigenetic marks that suggest that it is acting similarly to estrogen and is associated with dysregulated immune system pathways.
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Affiliation(s)
- Sarah W Curtis
- a Genetics and Molecular Biology Program, Laney Graduate SchoolLaney Graduate School , Emory University School of Medicine , Atlanta , GA , USA
| | - Dawayland O Cobb
- b Department of Gynecology and Obstetrics , Emory University School of Medicine , Atlanta , GA , USA
| | - Varun Kilaru
- b Department of Gynecology and Obstetrics , Emory University School of Medicine , Atlanta , GA , USA
| | - Metrecia L Terrell
- c Department of Epidemiology , Emory University Rollins School of Public Health , Atlanta , GA , USA
| | - Elizabeth M Kennedy
- d Department of Environmental Health , Emory University Rollins School of Public Health , Atlanta , GA , USA
| | - M Elizabeth Marder
- d Department of Environmental Health , Emory University Rollins School of Public Health , Atlanta , GA , USA
| | - Dana Boyd Barr
- d Department of Environmental Health , Emory University Rollins School of Public Health , Atlanta , GA , USA
| | - Carmen J Marsit
- d Department of Environmental Health , Emory University Rollins School of Public Health , Atlanta , GA , USA
| | - Michele Marcus
- e Departments of Epidemiology, Environmental Health , Emory University Rollins School of Public Health , Atlanta , GA , USA.,f Department of Pediatrics , Emory University School of Medicine , Atlanta , GA , USA
| | - Karen N Conneely
- g Department of Human Genetics , Emory University School of Medicine , Atlanta , GA , USA
| | - Alicia K Smith
- a Genetics and Molecular Biology Program, Laney Graduate SchoolLaney Graduate School , Emory University School of Medicine , Atlanta , GA , USA.,b Department of Gynecology and Obstetrics , Emory University School of Medicine , Atlanta , GA , USA.,h Department of Psychiatry and Behavioral Science , Emory University School of Medicine , Atlanta , GA , USA
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Wahlang B. Exposure to persistent organic pollutants: impact on women's health. REVIEWS ON ENVIRONMENTAL HEALTH 2018; 33:331-348. [PMID: 30110273 DOI: 10.1515/reveh-2018-0018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Accepted: 07/18/2018] [Indexed: 05/23/2023]
Abstract
This literature review focuses on the causal relationship between persistent organic pollutants (POPs) exposure and women's health disorders, particularly cancer, cardio-metabolic events and reproductive health. Progressive industrialization has resulted in the production of a multitude of chemicals that are released into the environment on a daily basis. Environmental chemicals or pollutants are not only hazardous to our ecosystem but also lead to various health problems that affect the human population worldwide irrespective of gender, race or age. However, most environmental health studies that have been conducted, until recently, were exclusively biased with regard to sex and gender, beginning with exposure studies that were reported mostly in male, occupational workers and animal studies being carried out mostly in male rodent models. Health-related issues pertaining to women of all age groups have not been studied thoroughly and rather disregarded in most aspects of basic health science research and it is therefore pertinent that we address these limitations in environmental health. The review also addresses studies looking at the associations between health outcomes and exposures to POPs, particularly, polychlorinated biphenyls (PCBs), dioxins and pesticides, reported in cohort studies while accounting for gender differences. Considering that current levels of POPs in women can also impact future generations, informative guidelines related to dietary patterns and exposure history are needed for women of reproductive age. Additionally, occupational cohorts of highly exposed women worldwide, such as women working in manufacturing plants and female pesticide applicators are required to gather more information on population susceptibility and disease pathology.
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Affiliation(s)
- Banrida Wahlang
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Louisville School of Medicine, 505 S. Hancock Street, CTRB, Louisville, KY 40202-1617, USA
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Petriello MC, Hoffman JB, Vsevolozhskaya O, Morris AJ, Hennig B. Dioxin-like PCB 126 increases intestinal inflammation and disrupts gut microbiota and metabolic homeostasis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 242:1022-1032. [PMID: 30373033 PMCID: PMC6211811 DOI: 10.1016/j.envpol.2018.07.039] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/02/2018] [Accepted: 07/10/2018] [Indexed: 05/18/2023]
Abstract
The gut microbiome is sensitive to diet and environmental exposures and is involved in the regulation of host metabolism. Additionally, gut inflammation is an independent risk factor for the development of metabolic diseases, specifically atherosclerosis and diabetes. Exposures to dioxin-like pollutants occur primarily via ingestion of contaminated foods and are linked to increased risk of developing cardiometabolic diseases. We aimed to elucidate the detrimental impacts of dioxin-like pollutant exposure on gut microbiota and host gut health and metabolism in a mouse model of cardiometabolic disease. We utilized 16S rRNA sequencing, metabolomics, and regression modeling to examine the impact of PCB 126 on the microbiome and host metabolism and gut health. 16S rRNA sequencing showed that gut microbiota populations shifted at the phylum and genus levels in ways that mimic observations seen in chronic inflammatory diseases. PCB 126 reduced cecum alpha diversity (0.60 fold change; p = 0.001) and significantly increased the Firmicutes to Bacteroidetes ratio (1.63 fold change; p = 0.044). Toxicant exposed mice exhibited quantifiable concentrations of PCB 126 in the colon, upregulation of Cyp1a1 gene expression, and increased markers of intestinal inflammation. Also, a significant correlation between circulating Glucagon-like peptide-1 (GLP-1) and Bifidobacterium was evident and dependent on toxicant exposure. PCB 126 exposure disrupted the gut microbiota and host metabolism and increased intestinal and systemic inflammation. These data imply that the deleterious effects of dioxin-like pollutants may be initiated in the gut, and the modulation of gut microbiota may be a sensitive marker of pollutant exposures.
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Affiliation(s)
- Michael C Petriello
- Superfund Research Center, University of Kentucky, Lexington, KY, USA; Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, Lexington, KY, USA; Lexington Veterans Affairs Medical Center, Lexington, KY, USA; Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, USA
| | - Jessie B Hoffman
- Superfund Research Center, University of Kentucky, Lexington, KY, USA; Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, USA
| | - Olga Vsevolozhskaya
- Department of Biostatistics, College of Public Health, University of Kentucky, Lexington, KY, USA
| | - Andrew J Morris
- Superfund Research Center, University of Kentucky, Lexington, KY, USA; Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, Lexington, KY, USA; Lexington Veterans Affairs Medical Center, Lexington, KY, USA
| | - Bernhard Hennig
- Superfund Research Center, University of Kentucky, Lexington, KY, USA; Department of Animal and Food Sciences, College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY, USA.
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32
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The environmental pollutant, polychlorinated biphenyls, and cardiovascular disease: a potential target for antioxidant nanotherapeutics. Drug Deliv Transl Res 2018; 8:740-759. [PMID: 28975503 DOI: 10.1007/s13346-017-0429-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Despite production having stopped in the 1970s, polychlorinated biphenyls (PCBs) represent persistent organic pollutants that continue to pose a serious human health risk. Exposure to PCBs has been linked to chronic inflammatory diseases, such as cardiovascular disease, type 2 diabetes, obesity, as well as hepatic disorders, endocrine dysfunction, neurological deficits, and many others. This is further complicated by the PCB's strong hydrophobicity, resulting in their ability to accumulate up the food chain and to be stored in fat deposits. This means that completely avoiding exposure is not possible, thus requiring the need to develop intervention strategies that can mitigate disease risks associated with exposure to PCBs. Currently, there is excitement in the use of nutritional compounds as a way of inhibiting the inflammation associated with PCBs, yet the suboptimal delivery and pharmacology of these compounds may not be sufficient in more acute exposures. In this review, we discuss the current state of knowledge of PCB toxicity and some of the antioxidant and anti-inflammatory nanocarrier systems that may be useful as an enhanced treatment modality for reducing PCB toxicity.
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Narayanan S, Loganathan G, Mokshagundam S, Hughes MG, Williams SK, Balamurugan AN. Endothelial cell regulation through epigenetic mechanisms: Depicting parallels and its clinical application within an intra-islet microenvironment. Diabetes Res Clin Pract 2018; 143:120-133. [PMID: 29953914 DOI: 10.1016/j.diabres.2018.06.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 05/31/2018] [Accepted: 06/19/2018] [Indexed: 12/12/2022]
Abstract
The intra-islet endothelial cells (ECs), the building blocks of islet microvasculature, govern a number of cellular and pathophysiological processes associated with the pancreatic tissue. These cells are key to the angiogenic process and essential for islet revascularization after transplantation. Understanding fundamental mechanisms by which ECs regulate the angiogenic process is important as these cells maintain and regulate the intra-islet environment facilitated by a complex signaling crosstalk with the surrounding endocrine cells. In recent years, many studies have demonstrated the impact of epigenetic regulation on islet cell development and function. This review will present an overview of the reports involving endothelial epigenetic mechanisms particularly focusing on histone modifications which have been identified to play a critical role in governing EC functions by modifying the chromatin structure. A better understanding of epigenetic mechanisms by which these cells regulate gene expression and function to orchestrate cellular physiology and pathology is likely to offer improved insights on the functioning and regulation of an intra-islet endothelial microvascular environment.
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Affiliation(s)
- Siddharth Narayanan
- Clinical Islet Cell Laboratory, Center for Cellular Transplantation, Cardiovascular Innovation Institute, Department of Surgery, University of Louisville, Louisville, KY 40202, United States
| | - Gopalakrishnan Loganathan
- Clinical Islet Cell Laboratory, Center for Cellular Transplantation, Cardiovascular Innovation Institute, Department of Surgery, University of Louisville, Louisville, KY 40202, United States
| | | | - Michael G Hughes
- Clinical Islet Cell Laboratory, Center for Cellular Transplantation, Cardiovascular Innovation Institute, Department of Surgery, University of Louisville, Louisville, KY 40202, United States
| | - Stuart K Williams
- Department of Physiology, University of Louisville, Louisville, KY 40202, United States
| | - Appakalai N Balamurugan
- Clinical Islet Cell Laboratory, Center for Cellular Transplantation, Cardiovascular Innovation Institute, Department of Surgery, University of Louisville, Louisville, KY 40202, United States.
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Donat-Vargas C, Åkesson A, Tornevi A, Wennberg M, Sommar J, Kiviranta H, Rantakokko P, Bergdahl IA. Persistent Organochlorine Pollutants in Plasma, Blood Pressure, and Hypertension in a Longitudinal Study. Hypertension 2018; 71:1258-1268. [PMID: 29712742 PMCID: PMC5959216 DOI: 10.1161/hypertensionaha.117.10691] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 12/22/2017] [Accepted: 03/07/2018] [Indexed: 11/16/2022]
Abstract
Persistent organochlorine pollutants (POPs) have shown to be involved in the atherosclerotic process and to cause endothelial cell dysfunction. To assess longitudinally whether plasma concentrations of different POPs were associated with blood pressure and risk of hypertension in middle-aged women and men. Study subjects were 850 participants in the VIP (Västerbotten Intervention Programme) with 2 blood samples and blood pressure measurements, 10 years apart, during 1990 to 2003 (baseline) and during 2000 to 2013 (follow-up). Dioxin-like and nondioxin-like polychlorinated biphenyls (DL-PCBs, NDL-PCBs) and p,p'-dichlorodiphenyldichloroethylene (DDE) were measured. Associations were assessed using generalized estimating equations. At baseline sampling 49% and at follow-up 64% had hypertension. DL-PCBs and DDE, but not NDL-PCBs or hexachlorobenzene, were associated with hypertension. Only the association for DL-PCBs remained statistically significant after lipid-standardization and adjustment for body mass index and total serum lipids. The multivariable-adjusted odds ratio of hypertension based on repeated measurements were 1.52 (95% confidence interval, 1.08-2.13) for DL-PCBs (third versus first tertile of lipid-standardized POPs). In stratified adjusted analyses, odds ratio for those born after 1950 increased to 3.99 (95% confidence interval, 2.15-7.43), whereas no association was observed among those born earlier. Based on repeated measurements, the accumulated exposure to DL-PCBs and DDE, although less clear for the latter, may disrupt the normal blood pressure levels and increase the odds of hypertension. Moreover, individuals experiencing early-life POP exposure may be at elevated risk of vascular POP effects.
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Affiliation(s)
- Carolina Donat-Vargas
- From the Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden (C.D.-V., A.A.)
| | - Agneta Åkesson
- From the Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden (C.D.-V., A.A.)
| | - Andreas Tornevi
- Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine (A.T., J.S., I.A.B.)
| | | | - Johan Sommar
- Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine (A.T., J.S., I.A.B.)
| | - Hannu Kiviranta
- Umeå University, Sweden; and Department for Health Security, Environmental Health Unit, National Institute for Health and Welfare, Kuopio, Finland (H.K., P.R.)
| | - Panu Rantakokko
- Umeå University, Sweden; and Department for Health Security, Environmental Health Unit, National Institute for Health and Welfare, Kuopio, Finland (H.K., P.R.)
| | - Ingvar A Bergdahl
- Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine (A.T., J.S., I.A.B.)
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Curtis SW, Conneely KN, Marder ME, Terrell ML, Marcus M, Smith AK. Intergenerational effects of endocrine-disrupting compounds: a review of the Michigan polybrominated biphenyl registry. Epigenomics 2018; 10:845-858. [PMID: 29888951 PMCID: PMC6275560 DOI: 10.2217/epi-2017-0174] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 03/16/2018] [Indexed: 01/12/2023] Open
Abstract
Endocrine-disrupting compounds (EDCs) are a broad class of chemicals present in many residential products that can disrupt hormone signaling and cause health problems in humans. Multigenerational cohorts, like the Michigan polybrominated biphenyl registry, are ideal for studying the effects of intergenerational exposure. Registry participants report hormone-related health problems, particularly in those exposed before puberty or those in the second generation exposed through placental transfer or breastfeeding. However, more research is needed to determine how EDCs cause health problems and the mechanisms underlying intergenerational exposure. Utilizing existing data in this registry, along with genetic and epigenetic approaches, could provide insight to how EDCs cause human disease and help to determine the risk to exposed populations and future generations.
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Affiliation(s)
- Sarah W Curtis
- Genetics and Molecular Biology Program, Emory University, Atlanta, GA 30322, USA
| | - Karen N Conneely
- Genetics and Molecular Biology Program, Emory University, Atlanta, GA 30322, USA
- Department of Human Genetics, Emory University, Atlanta, GA, 30322, USA
| | - Mary E Marder
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, 30322, USA
| | - Metrecia L Terrell
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, 30322, USA
| | - Michele Marcus
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, 30322, USA
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, 30322, USA
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, 30322, USA
| | - Alicia K Smith
- Genetics and Molecular Biology Program, Emory University, Atlanta, GA 30322, USA
- Department of Gynecology and Obstetrics, Emory University School of Medicine, Atlanta, GA, 30322, USA
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, 30322, USA
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Zota AR, Geller RJ, Romano LE, Coleman-Phox K, Adler NE, Parry E, Wang M, Park JS, Elmi AF, Laraia BA, Epel ES. Association between persistent endocrine-disrupting chemicals (PBDEs, OH-PBDEs, PCBs, and PFASs) and biomarkers of inflammation and cellular aging during pregnancy and postpartum. ENVIRONMENT INTERNATIONAL 2018; 115:9-20. [PMID: 29533840 PMCID: PMC5970048 DOI: 10.1016/j.envint.2018.02.044] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 01/31/2018] [Accepted: 02/25/2018] [Indexed: 05/18/2023]
Abstract
BACKGROUND Endocrine-disrupting chemicals (EDCs) can target immune and metabolic pathways. However, few epidemiologic studies have examined the influence of EDCs on measures of inflammation and cellular aging during pregnancy and postpartum. OBJECTIVE We investigated associations between prenatal exposures to polybrominated diphenyl ethers (PBDEs), hydroxylated PBDE metabolites (OH-PBDEs), polychlorinated biphenyls (PCBs), and per- and polyfluorochemicals (PFASs) with repeated biomarker measurements of inflammation and cellular aging in women during pregnancy and the postpartum period. METHODOLOGY Overweight or obese pregnant women were recruited from the San Francisco Bay area (n = 103) during their first or second trimester of pregnancy. Blood samples were collected from participants at baseline (median 16 weeks gestation) and at three and nine months postpartum. Serum concentrations of PBDEs, OH-PBDEs, PCBs, and PFASs were measured at baseline. Inflammation biomarkers (interleukin 6 [IL-6], interleukin 10 [IL-10], and tumor necrosis factor [TNF-α]) and leukocyte telomere length (LTL), a biomarker of cellular aging, were measured at all three time points. Associations between serum chemical concentrations and repeated measures of IL-6, IL-10, TNF-α, and LTL were examined using linear mixed models. We also examined the potential for effect modification by time (visit) and obesity. RESULTS In adjusted models, we observed positive relationships between PBDEs and pro-inflammatory cytokines (IL-6 and TNF-α). A doubling in ∑PBDEs was associated with a 15.26% (95% CI 1.24, 31.22) and 3.74% (95% CI -0.19, 7.82) increase in IL-6 and TNF-α, respectively. Positive associations were also observed for PFASs and IL-6. A two-fold increase in ∑PFASs was associated with a 20.87% (95% CI 3.46, 41.22) increase in IL-6. 5-OHBDE-47 was inversely associated with anti-inflammatory cytokine IL-10. Some EDC-outcome associations, including those of PBDEs with TNF-α, were stronger during pregnancy (compared to three or nine months postpartum) and among obese (compared to overweight) women (p-interaction <0.05). CONCLUSIONS These findings suggest that exposure to specific EDCs is associated with increased inflammation among women during pregnancy and the postpartum period. Future studies should replicate these findings in additional study populations and examine the implications of these associations for maternal and child health.
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Affiliation(s)
- Ami R Zota
- Milken Institute School of Public Health, The George Washington University, Washington, DC, USA.
| | - Ruth J Geller
- Milken Institute School of Public Health, The George Washington University, Washington, DC, USA
| | - Laura E Romano
- Milken Institute School of Public Health, The George Washington University, Washington, DC, USA
| | - Kimberly Coleman-Phox
- Center for Health and Community, School of Medicine, University of California, San Francisco, CA, USA
| | - Nancy E Adler
- Department of Psychiatry, School of Medicine, University of California, San Francisco, CA, USA
| | - Emily Parry
- Environmental Chemistry Laboratory, California Department of Toxic Substances Control, Berkeley, CA, USA
| | - Miaomiao Wang
- Environmental Chemistry Laboratory, California Department of Toxic Substances Control, Berkeley, CA, USA
| | - June-Soo Park
- Environmental Chemistry Laboratory, California Department of Toxic Substances Control, Berkeley, CA, USA
| | - Angelo F Elmi
- Milken Institute School of Public Health, The George Washington University, Washington, DC, USA
| | - Barbara A Laraia
- Division of Community Health and Human Development, School of Public Health, University of California, Berkeley, CA, USA
| | - Elissa S Epel
- Department of Psychiatry, School of Medicine, University of California, San Francisco, CA, USA
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Chai T, Cui F, Song Y, Ye L, Li T, Qiu J, Liu X. Enantioselective Toxicity in Adult Zebrafish ( Danio rerio) Induced by Chiral PCB91 through Multiple Pathways. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:5448-5458. [PMID: 29641891 DOI: 10.1021/acs.est.8b00023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This study aimed to further investigate the toxic mechanism of chiral polychlorinated biphenyl (PCB) 91 in adult zebrafish ( Danio rerio) exposed to racemic (rac-), (+)-, or (-)-PCB91 for 63 days. The enantioselective mortalities of adult zebrafish exposed to rac-/(+)-/(-)-PCB91 were 95.86, 50.08, and 81.50%, respectively. Tubular necrosis and cellular hypertrophy occurred in the kidneys of (-)-PCB91-treated groups, whereas demyelination and immune cell infiltration occurred in brains of the rac-, (+)-, and (-)-PCB91-treated groups. Additionally, exposure to chiral PCB91 enantioselectively induced neurotoxicity, apoptosis, and inflammation in brain tissues owing to perturbations of gene expression, protein content and sphingolipid levels. The high mortality after rac-/(+)-PCB91 exposure might be due to toxic effects on brain tissue, while the high mortality after (-)-PCB91 exposure might be due to toxic effects on kidney as well as brain tissues. Thus, our findings offer an important reference for elucidating the enantioselective toxicological mechanism of chiral PCBs in aquatic organisms.
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Affiliation(s)
- Tingting Chai
- Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Agriculture and Food Science , Zhejiang A & F University , Lin'an , Zhejiang 311300 , P.R. China
| | - Feng Cui
- Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Agriculture and Food Science , Zhejiang A & F University , Lin'an , Zhejiang 311300 , P.R. China
| | - Yue Song
- Institute of Quality Standards & Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety , Chinese Academy of Agricultural Sciences and Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture , Beijing 100081 , China
| | - Linlin Ye
- Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Agriculture and Food Science , Zhejiang A & F University , Lin'an , Zhejiang 311300 , P.R. China
| | - Tiantian Li
- Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Agriculture and Food Science , Zhejiang A & F University , Lin'an , Zhejiang 311300 , P.R. China
| | - Jing Qiu
- Institute of Quality Standards & Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety , Chinese Academy of Agricultural Sciences and Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture , Beijing 100081 , China
| | - Xingquan Liu
- Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Agriculture and Food Science , Zhejiang A & F University , Lin'an , Zhejiang 311300 , P.R. China
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Hennig B, Petriello MC, Gamble MV, Surh YJ, Kresty LA, Frank N, Rangkadilok N, Ruchirawat M, Suk WA. The role of nutrition in influencing mechanisms involved in environmentally mediated diseases. REVIEWS ON ENVIRONMENTAL HEALTH 2018; 33:87-97. [PMID: 29381475 PMCID: PMC5987536 DOI: 10.1515/reveh-2017-0038] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 12/13/2017] [Indexed: 05/05/2023]
Abstract
Human exposure to environmental contaminants such as persistent chlorinated organics, heavy metals, pesticides, phthalates, flame retardants, electronic waste and airborne pollutants around the world, and especially in Southeast Asian regions, are significant and require urgent attention. Given this widespread contamination and abundance of such toxins as persistent organic pollutants (POPs) in the ecosystem, it is unlikely that remediation alone will be sufficient to address the health impacts associated with this exposure. Furthermore, we must assume that the impact on health of some of these contaminants results in populations with extraordinary vulnerabilities to disease risks. Further exacerbating risk; infectious diseases, poverty and malnutrition are common in the Southeast Asian regions of the world. Thus, exploring preventive measures of environmental exposure and disease risk through new paradigms of environmental toxicology, optimal and/or healthful nutrition and health is essential. For example, folic acid supplementation can lower blood arsenic levels, and plant-derived bioactive nutrients can lower cardiovascular and cancer risks linked to pollutant exposure. Data also indicate that diets enriched with bioactive food components such as polyphenols and omega-3 polyunsaturated fatty acids can prevent or decrease toxicant-induced inflammation. Thus, consuming healthy diets that exhibit high levels of antioxidant and anti-inflammatory properties, is a meaningful way to reduce the vulnerability to non-communicable diseases linked to environmental toxic insults. This nutritional paradigm in environmental toxicology requires further study in order to improve our understanding of the relationship between nutrition or other lifestyle modifications and toxicant-induced diseases. Understanding mechanistic relationships between nutritional modulation of environmental toxicants and susceptibility to disease development are important for both cumulative risk assessment and the design and implementation of future public health programs and behavioral interventions.
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Affiliation(s)
- Bernhard Hennig
- University of Kentucky Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA
| | - Michael C. Petriello
- University of Kentucky Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA
| | - Mary V. Gamble
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, NY, USA
| | - Young-Joon Surh
- Tumor Microenvironment Global Core Research Center, College of Pharmacy, Seoul National University, Seoul 151-742 08826, South Korea
| | - Laura A. Kresty
- Section of Thoracic Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI, 48109, MI, USA
| | - Norbert Frank
- German Cancer Research Center, 69120 Heidelberg, Germany
| | | | | | - William A. Suk
- National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
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Yao M, Hu T, Wang Y, Du Y, Hu C, Wu R. Polychlorinated biphenyls and its potential role in endometriosis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 229:837-845. [PMID: 28774553 DOI: 10.1016/j.envpol.2017.06.088] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Revised: 06/19/2017] [Accepted: 06/26/2017] [Indexed: 06/07/2023]
Abstract
With the progress of global industrialization and environmental deterioration, the relationship between human health and the living environment has become an increasing focus of attention. Polychlorinated biphenyls (PCBs, including dioxin-like polychlorinated biphenyls and non-dioxin-like polychlorinated biphenyls), as part of the organic chlorine contaminants, have been suspected as playing a role in the etiopathogenesis of endometriosis. Several population-based studies have proposed that exposure to PCBs may increase the risk of developing endometriosis, while some epidemiological studies have failed to find any association between PCBs and endometriosis. The purpose of this review is to discuss the potential pathophysiological relationship between endometriosis and PCBs with a focus on both dioxin-like polychlorinated biphenyls and non-dioxin-like polychlorinated biphenyls.
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Affiliation(s)
- Mengyun Yao
- Department of Gynecology, Women's Hospital, School of Medicine, Zhejiang University, 1Xueshi Road, Hangzhou 310006, P.R. China
| | - Tingting Hu
- Department of Gynecology, Women's Hospital, School of Medicine, Zhejiang University, 1Xueshi Road, Hangzhou 310006, P.R. China
| | - Yinfeng Wang
- Department of Gynecology, Women's Hospital, School of Medicine, Zhejiang University, 1Xueshi Road, Hangzhou 310006, P.R. China
| | - Yongjiang Du
- Department of Gynecology, Women's Hospital, School of Medicine, Zhejiang University, 1Xueshi Road, Hangzhou 310006, P.R. China
| | - Changchang Hu
- Department of Gynecology, Women's Hospital, School of Medicine, Zhejiang University, 1Xueshi Road, Hangzhou 310006, P.R. China
| | - Ruijin Wu
- Department of Gynecology, Women's Hospital, School of Medicine, Zhejiang University, 1Xueshi Road, Hangzhou 310006, P.R. China.
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Soualeh N, Dridi I, Eppe G, Némos C, Soulimani R, Bouayed J. Perinatal programming of depressive-like behavior by inflammation in adult offspring mice whose mothers were fed polluted eels: Gender selective effects. Brain Behav Immun 2017; 63:137-147. [PMID: 27702682 DOI: 10.1016/j.bbi.2016.09.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 09/21/2016] [Accepted: 09/30/2016] [Indexed: 02/07/2023] Open
Abstract
Several lines of evidence indicate that early-life inflammation may predispose to mental illness, including depression, in later-life. We investigated the impact of perinatal exposure to polluted eels on neonatal, postnatal, and adult brain inflammation, and on the resignation behavior of male and female adult offspring mice. The effects of maternal standard diet (laboratory food) were compared to the same diet enriched with low, intermediate, or highly polluted eels. Brain inflammatory markers including cytokines were assessed in offspring mice on the day of birth (i.e., on the postnatal day-PND 1), upon weaning (PND 21) and at adulthood (PND 100). Plasma myeloperoxidase and corticosterone levels were evaluated at PND 100. Immobility behavior of offspring was assessed in adulthood (i.e., at PNDs 95-100), using the tail suspension and forced swimming tests. Chronic brain inflammation was found in male and female offspring mice compared to controls, as assessed at PNDs 1, 21, and 100. The level of myeloperoxidase was found to be significantly higher in both adult males and females vs. control offspring. However, high corticosterone levels were only found in male offspring mice that were perinatally exposed to eels, suggesting a gender-selective dysregulation of the adult hypothalamic-pituitaryadrenal (HPA) axis. Gender-specific differences were also detected in adulthood in regard to offspring resignation behavior. Thus, compared to controls, males, but not females, whose mothers were fed eels during pregnancy and lactation exhibited a depressive-like behavior in adult age in both behavioral models of depression. Depressive symptoms were more pronounced in male mice perinatally exposed to either intermediate or highly polluted eels than those exposed to only lowly polluted eels. Our results indicate that early-life inflammatory insult is a plausible causative factor that induces the depressive phenotype exhibited by male adult offspring mice, most likely through a gender-specific HPA axis enhanced activation.
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Affiliation(s)
- Nidhal Soualeh
- Université de Lorraine, Neurotoxicologie Alimentaire et Bioactivité, BP 4102, 57040 Metz, France
| | - Imen Dridi
- Université de Lorraine, Neurotoxicologie Alimentaire et Bioactivité, BP 4102, 57040 Metz, France
| | - Gauthier Eppe
- Université de Liège, Inorganic Analytical Chemistry, CART (Center for Analytical and Research Technology), B-4000 Sart-Tilman, Belgium
| | - Christophe Némos
- Université de Lorraine, Neurotoxicologie Alimentaire et Bioactivité, BP 4102, 57040 Metz, France
| | - Rachid Soulimani
- Université de Lorraine, Neurotoxicologie Alimentaire et Bioactivité, BP 4102, 57040 Metz, France
| | - Jaouad Bouayed
- Université de Lorraine, Neurotoxicologie Alimentaire et Bioactivité, BP 4102, 57040 Metz, France.
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Song J, Pan W, Sun Y, Han J, Shi W, Liao W. Aspergillus fumigatus-induced early inflammatory response in pulmonary microvascular endothelial cells: Role of p38 MAPK and inhibition by silibinin. Int Immunopharmacol 2017; 49:195-202. [PMID: 28601021 DOI: 10.1016/j.intimp.2017.05.038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Revised: 05/04/2017] [Accepted: 05/31/2017] [Indexed: 12/17/2022]
Abstract
Human invasive pulmonary aspergillosis (IPA) is a serious infectious disease mainly caused by Aspergillus fumigatus (A. fumigatus). Pulmonary microvascular endothelial cells (PMVECs) are important ones in the human lung tissue. However, it remains unclear about the role of PMVECs in IPA. In the present study, we cocultured PMVECs with A. fumigatus. We observed that A. fumigatus induced dose- and time-dependent increases of interleukin 6 (IL-6), interleukin 1β (IL-1β) and intercellular adhesion molecule 1 (ICAM-1) concentration in the cultures. Significant increases in IL-6, IL-1β, E-selectin, and ICAM-1 mRNA expression were also observed in the cultures treated with A. fumigatus. While preincubation with SB203580 (10μM) did not cause significant changes in IL-6, IL-1β and ICAM-1 concentration in the cocultures, significant IL-6, IL-1β and ICAM-1 concentration decreases were observed in the cocultures preincubated with SB203580 (20μM). Neither SP600125 (10-20μM) nor PD98059 (10-20μM) caused significant changes in IL-6, IL-1β and ICAM-1 concentration in the cocultures. PCR results also showed that SB203580 (20μM) (neither SP600125 (20μM) nor PD98059 (20μM)) preincubation significantly decreased IL-6, IL-1β, E-selectin and ICAM-1 mRNA expression in the cocultures. In addition, significant p38 MAPK phosphorylation increase was observed in the PMVECs cultures treated with A. fumigatus. Furthermore, silibinin pre-treatment and post-treatment were observed to significantly down-regulate mRNA and protein expression of proinflammatory factors and adhesion molecules in the cocultures. Finally, we observed that silibinin significantly inhibited A. fumigatus-induced p38 MAPK activation in PMVECs. Our results indicated that PMVECs might participate in IPA early inflammation which is mediated by p38 MAPK. Silibinin may inhibit A. fumigatus-induced inflammation in PMVECs through p38 MAPK.
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Affiliation(s)
- Jun Song
- Department of Dermatology, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Weihua Pan
- Shanghai Key Laboratory of Molecular Medical Mycology, Shanghai Institute of Medical Mycology, Second Military Medical University, Shanghai, China
| | - Yue Sun
- Department of Dermatology, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Jing Han
- Department of Dermatology, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Weimin Shi
- Department of Dermatology, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai, China.
| | - Wanqing Liao
- Shanghai Key Laboratory of Molecular Medical Mycology, Shanghai Institute of Medical Mycology, Second Military Medical University, Shanghai, China.
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Abstract
BACKGROUND Recent evidence highlights the reality of unprecedented human exposure to toxic chemical agents found throughout our environment - in our food and water supply, in the air we breathe, in the products we apply to our skin, in the medical and dental materials placed into our bodies, and even within the confines of the womb. With biomonitoring confirming the widespread bioaccumulation of myriad toxicants among population groups, expanding research continues to explore the pathobiological impact of these agents on human metabolism. METHODS This review was prepared by assessing available medical and scientific literature from Medline as well as by reviewing several books, toxicology journals, government publications, and conference proceedings. The format of a traditional integrated review was chosen. RESULTS Toxicant exposure and accrual has been linked to numerous biochemical and pathophysiological mechanisms of harm. Some toxicants effect metabolic disruption via multiple mechanisms. CONCLUSIONS As a primary causative determinant of chronic disease, toxicant exposures induce metabolic disruption in myriad ways, which consequently result in varied clinical manifestations, which are then categorized by health providers into innumerable diagnoses. Chemical disruption of human metabolism has become an etiological determinant of much illness throughout the lifecycle, from neurodevelopmental abnormalities in-utero to dementia in the elderly.
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Affiliation(s)
- Stephen J Genuis
- a Faculty of Medicine, University of Alberta , Edmonton , Alberta , Canada
| | - Edmond Kyrillos
- b Department of Family Medicine , Faculty of Medicine, University of Ottawa , Ottawa , Ontario , Canada
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Wu H, Yu W, Meng F, Mi J, Peng J, Liu J, Zhang X, Hai C, Wang X. Polychlorinated biphenyls-153 induces metabolic dysfunction through activation of ROS/NF-κB signaling via downregulation of HNF1b. Redox Biol 2017; 12:300-310. [PMID: 28285191 PMCID: PMC5345977 DOI: 10.1016/j.redox.2017.02.026] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 02/25/2017] [Accepted: 02/28/2017] [Indexed: 11/26/2022] Open
Abstract
Polychlorinated biphenyls (PCB) is a major type of persistent organic pollutants (POPs) that act as endocrine-disrupting chemicals. In the current study, we examined the mechanism underlying the effect of PCB-153 on glucose and lipid metabolism in vivo and in vitro. We found that PCB-153 induced per se and worsened high fat diet (HFD)-resulted increase of blood glucose level and glucose and insulin intolerance. In addition, PCB-153 induced per se and worsened HFD-resulted increase of triglyceride content and adipose mass. Moreover, PCB-153 concentration-dependently inhibited insulin-dependent glucose uptake and lipid accumulation in cultured hepatocytes and adipocytes. PCB-153 induced the expression and nuclear translocation of p65 NF-κB and the expression of its downstream inflammatory markers, and worsened HFD-resulted increase of those inflammatory markers. Inhibition of NF-κB significantly suppressed PCB-153-induced inflammation, lipid accumulation and decrease of glucose uptake. PCB-153 induced oxidative stress and decreased hepatocyte nuclear factor 1b (HNF1b) and glutathione peroxidase 1 (GPx1) expression in vivo and in vitro. Overexpression of HNF1b increased GPx1 expression, decreased ROS level, decreased Srebp1, ACC and FAS expression, and inhibited PCB-153-resulted oxidative stress, NF-κB-mediated inflammation, and final glucose/lipid metabolic disorder. Our results suggest that dysregulation of HNF1b/ROS/NF-κB plays an important role in PCB-153-induced glucose/lipid metabolic disorder.
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Affiliation(s)
- Hao Wu
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an 710032, China
| | - Weihua Yu
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an 710032, China
| | - Fansen Meng
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an 710032, China
| | - Jie Mi
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an 710032, China
| | - Jie Peng
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an 710032, China
| | - Jiangzheng Liu
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an 710032, China
| | - Xiaodi Zhang
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an 710032, China
| | - Chunxu Hai
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an 710032, China
| | - Xin Wang
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an 710032, China.
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Petriello MC, Hoffman JB, Morris AJ, Hennig B. Emerging roles of xenobiotic detoxification enzymes in metabolic diseases. REVIEWS ON ENVIRONMENTAL HEALTH 2017; 32:105-110. [PMID: 27837601 PMCID: PMC5604474 DOI: 10.1515/reveh-2016-0050] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 09/30/2016] [Indexed: 05/31/2023]
Abstract
Mammalian systems have developed extensive molecular mechanisms to protect against the toxicity of many exogenous xenobiotic compounds. Interestingly, many detoxification enzymes, including cytochrome P450s and flavin-containing monooxygenases, and their associated transcriptional activators [e.g. the aryl hydrocarbon receptor (AhR)], have now been shown to have endogenous roles in normal physiology and the pathology of metabolic diseases. This mini-review will focus on two such instances: the role of flavin-containing monooxygenase 3 (FMO3) in the formation of the cardiometabolic disease biomarker trimethylamine-N-oxide (TMAO) and the role of AhR as a sensor of endogenous ligands such as those generated by the gut microbiota. Understanding the roles of xenobiotic sensing pathways in endogenous metabolism will undoubtedly lead to a better understanding of how exposure to environmental pollutants can perturb these physiological processes.
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Affiliation(s)
- Michael C Petriello
- Superfund Research Center, University of Kentucky, Lexington, KY 40536
- Department of Animal and Food Sciences, College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY 40536
- Lexington Veterans Affairs Medical Center, Lexington Kentucky, USA
| | - Jessie B Hoffman
- Superfund Research Center, University of Kentucky, Lexington, KY 40536
- Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, KY 40536
| | - Andrew J Morris
- Superfund Research Center, University of Kentucky, Lexington, KY 40536
- Lexington Veterans Affairs Medical Center, Lexington Kentucky, USA
- Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, Lexington, KY 40536
| | - Bernhard Hennig
- Superfund Research Center, University of Kentucky, Lexington, KY 40536
- Department of Animal and Food Sciences, College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY 40536
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Hoffman JB, Petriello MC, Hennig B. Impact of nutrition on pollutant toxicity: an update with new insights into epigenetic regulation. REVIEWS ON ENVIRONMENTAL HEALTH 2017; 32:65-72. [PMID: 28076319 PMCID: PMC5489226 DOI: 10.1515/reveh-2016-0041] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 11/09/2016] [Indexed: 05/03/2023]
Abstract
Exposure to environmental pollutants is a global health problem and is associated with the development of many chronic diseases, including cardiovascular disease, diabetes and metabolic syndrome. There is a growing body of evidence that nutrition can both positively and negatively modulate the toxic effects of pollutant exposure. Diets high in proinflammatory fats, such as linoleic acid, can exacerbate pollutant toxicity, whereas diets rich in bioactive and anti-inflammatory food components, including omega-3 fatty acids and polyphenols, can attenuate toxicant-associated inflammation. Previously, researchers have elucidated direct mechanisms of nutritional modulation, including alteration of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) signaling, but recently, increased focus has been given to the ways in which nutrition and pollutants affect epigenetics. Nutrition has been demonstrated to modulate epigenetic markers that have been linked either to increased disease risks or to protection against diseases. Overnutrition (i.e. obesity) and undernutrition (i.e. famine) have been observed to alter prenatal epigenetic tags that may increase the risk of offspring developing disease later in life. Conversely, bioactive food components, including curcumin, have been shown to alter epigenetic markers that suppress the activation of NF-κB, thus reducing inflammatory responses. Exposure to pollutants also alters epigenetic markers and may contribute to inflammation and disease. It has been demonstrated that pollutants, via epigenetic modulations, can increase the activation of NF-κB and upregulate microRNAs associated with inflammation, cardiac injury and oxidative damage. Importantly, recent evidence suggests that nutritional components, including epigallocatechin gallate (EGCG), can protect against pollutant-induced inflammation through epigenetic regulation of proinflammatory target genes of NF-κB. Further research is needed to better understand how nutrition can modulate pollutant toxicity through epigenetic regulation. Therefore, the objective of this review is to elucidate the current evidence linking epigenetic changes to pollutant-induced diseases and how this regulation may be modulated by nutrients allowing for the development of future personalized lifestyle interventions.
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Affiliation(s)
- Jessie B Hoffman
- Superfund Research Center, University of Kentucky, Lexington, KY 40536
- Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, KY 40536
| | - Michael C Petriello
- Superfund Research Center, University of Kentucky, Lexington, KY 40536
- Department of Animal and Food Sciences, College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY 40536
| | - Bernhard Hennig
- Superfund Research Center, University of Kentucky, Lexington, KY 40536
- Department of Animal and Food Sciences, College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY 40536
- Correspondence should be directed to: Bernhard Hennig, 900 S. Limestone Street, Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA. Tel.: +1 859-218-1343; fax: +1 859-257-1811;
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Dioxin-like rather than non-dioxin-like PCBs promote the development of endometriosis through stimulation of endocrine–inflammation interactions. Arch Toxicol 2016; 91:1915-1924. [DOI: 10.1007/s00204-016-1854-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Accepted: 09/15/2016] [Indexed: 02/06/2023]
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Wahlang B, Petriello MC, Perkins JT, Shen S, Hennig B. Polychlorinated biphenyl exposure alters the expression profile of microRNAs associated with vascular diseases. Toxicol In Vitro 2016; 35:180-7. [PMID: 27288564 PMCID: PMC4949395 DOI: 10.1016/j.tiv.2016.06.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 05/05/2016] [Accepted: 06/07/2016] [Indexed: 01/17/2023]
Abstract
Exposure to persistent organic pollutants, including polychlorinated biphenyls (PCBs) is correlated with multiple vascular complications including endothelial cell dysfunction and atherosclerosis. PCB-induced activation of the vasculature subsequently leads to oxidative stress and induction of pro-inflammatory cytokines and adhesion proteins. Gene expression of these cytokines/proteins is known to be regulated by small, endogenous oligonucleotides known as microRNAs that interact with messenger RNA. MicroRNAs are an acknowledged component of the epigenome, but the role of environmentally-driven epigenetic changes such as toxicant-induced changes in microRNA profiles is currently understudied. The objective of this study was to determine the effects of PCB exposure on microRNA expression profile in primary human endothelial cells using the commercial PCB mixture Aroclor 1260. Samples were analyzed using Affymetrix GeneChip® miRNA 4.0 arrays for high throughput detection and selected microRNA gene expression was validated (RT-PCR). Microarray analysis identified 557 out of 6658 microRNAs that were changed with PCB exposure (p<0.05). In-silico analysis using MetaCore database identified 21 of these microRNAs to be associated with vascular diseases. Further validation showed that Aroclor 1260 increased miR-21, miR-31, miR-126, miR-221 and miR-222 expression levels. Upregulated miR-21 has been reported in cardiac injury while miR-126 and miR-31 modulate inflammation. Our results demonstrated evidence of altered microRNA expression with PCB exposure, thus providing novel insights into mechanisms of PCB toxicity.
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Affiliation(s)
- Banrida Wahlang
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA; Department of Animal and Food Sciences, College of Agriculture, Food, and Environment, University of Kentucky, Lexington, KY 40536, USA
| | - Michael C Petriello
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA; Department of Animal and Food Sciences, College of Agriculture, Food, and Environment, University of Kentucky, Lexington, KY 40536, USA
| | - Jordan T Perkins
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA
| | - Shu Shen
- Department of Statistics, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA
| | - Bernhard Hennig
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA; Department of Animal and Food Sciences, College of Agriculture, Food, and Environment, University of Kentucky, Lexington, KY 40536, USA; Graduate Center for Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, KY 40536, USA.
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48
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Raymond MR, Christensen KY, Thompson BA, Anderson HA. Associations Between Fish Consumption and Contaminant Biomarkers With Cardiovascular Conditions Among Older Male Anglers in Wisconsin. J Occup Environ Med 2016; 58:676-82. [DOI: 10.1097/jom.0000000000000757] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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