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Wang Z, Zhou Y, Xiao X, Liu A, Wang S, Preston RJS, Zaytseva YY, He G, Xiao W, Hennig B, Deng P. Inflammation and cardiometabolic diseases induced by persistent organic pollutants and nutritional interventions: Effects of multi-organ interactions. Environ Pollut 2023; 339:122756. [PMID: 37844865 PMCID: PMC10842216 DOI: 10.1016/j.envpol.2023.122756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 10/11/2023] [Accepted: 10/13/2023] [Indexed: 10/18/2023]
Abstract
The development and outcome of inflammatory diseases are associated with genetic and lifestyle factors, which include chemical and nonchemical stressors. Persistent organic pollutants (POPs) are major groups of chemical stressors. For example, dioxin-like polychlorinated biphenyls (PCBs), per- and polyfluoroalkyl substances (PFASs), and polybrominated diphenyl ethers (PBDEs) are closely associated with the incidence of inflammatory diseases. The pathology of environmental chemical-mediated inflammatory diseases is complex and may involve disturbances in multiple organs, including the gut, liver, brain, vascular tissues, and immune systems. Recent studies suggested that diet-derived nutrients (e.g., phytochemicals, vitamins, unsaturated fatty acids, dietary fibers) could modulate environmental insults and affect disease development, progression, and outcome. In this article, mechanisms of environmental pollutant-induced inflammation and cardiometabolic diseases are reviewed, focusing on multi-organ interplays and highlighting recent advances in nutritional strategies to improve the outcome of cardiometabolic diseases associated with environmental exposures. In addition, advanced system biology approaches are discussed, which present unique opportunities to unveil the complex interactions among multiple organs and to fuel the development of precision intervention strategies in exposed individuals.
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Affiliation(s)
- Zhongmin Wang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China; Irish Centre for Vascular Biology, School of Pharmacy & Biomolecular Sciences, Royal College of Surgeons in Ireland, Ireland
| | - Yixuan Zhou
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Xia Xiao
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Aowen Liu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Shengnan Wang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Roger J S Preston
- Irish Centre for Vascular Biology, School of Pharmacy & Biomolecular Sciences, Royal College of Surgeons in Ireland, Ireland
| | - Yekaterina Y Zaytseva
- Superfund Research Center, University of Kentucky, Lexington, KY, USA; Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, USA
| | - Guangzhao He
- Department of Pharmacy, Changzhou Cancer Hospital, Soochow University, Changzhou, Jiangsu, China
| | - Wenjin Xiao
- Department of Endocrinology, Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - 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
| | - Pan Deng
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China.
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Hennig B. Letter from the outgoing editor. J Nutr Biochem 2023; 122:109439. [PMID: 37940217 DOI: 10.1016/j.jnutbio.2023.109439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 09/01/2023] [Indexed: 11/10/2023]
Affiliation(s)
- Bernhard Hennig
- Professor of Nutrition and Toxicology, University of Kentucky, Lexington, KY.
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Durham J, Tessmann JW, Deng P, Hennig B, Zaytseva YY. The role of perfluorooctane sulfonic acid (PFOS) exposure in inflammation of intestinal tissues and intestinal carcinogenesis. Front Toxicol 2023; 5:1244457. [PMID: 37662676 PMCID: PMC10469509 DOI: 10.3389/ftox.2023.1244457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 08/03/2023] [Indexed: 09/05/2023] Open
Abstract
PFAS (per- and polyfluoroalkyl substances) are organofluorine substances that are used commercially in products like non-stick cookware, food packaging, personal care products, fire-fighting foam, etc. These chemicals have several different subtypes made of varying numbers of carbon and fluorine atoms. PFAS substances that have longer carbon chains, such as PFOS (perfluorooctane sulfonic acid), can potentially pose a significant public health risk due to their ability to bioaccumulate and persist for long periods of time in the body and the environment. The National Academies Report suggests there is some evidence of PFOS exposure and gastrointestinal (GI) inflammation contributing to ulcerative colitis. Inflammatory bowel diseases such as ulcerative colitis are precursors to colorectal cancer. However, evidence about the association between PFOS and colorectal cancer is limited and has shown contradictory findings. This review provides an overview of population and preclinical studies on PFOS exposure and GI inflammation, metabolism, immune responses, and carcinogenesis. It also highlights some mitigation approaches to reduce the harmful effects of PFOS on GI tract and discusses the dietary strategies, such as an increase in soluble fiber intake, to reduce PFOS-induced alterations in cellular lipid metabolism. More importantly, this review demonstrates the urgent need to better understand the relationship between PFOS and GI pathology and carcinogenesis, which will enable development of better approaches for interventions in populations exposed to high levels of PFAS, and in particular to PFOS.
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Affiliation(s)
- Jerika Durham
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, United States
| | - Josiane Weber Tessmann
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, United States
| | - Pan Deng
- College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Bernhard Hennig
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY, United States
| | - Yekaterina Y. Zaytseva
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, United States
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Deng P, Durham J, Liu J, Zhang X, Wang C, Li D, Gwag T, Ma M, Hennig B. Metabolomic, Lipidomic, Transcriptomic, and Metagenomic Analyses in Mice Exposed to PFOS and Fed Soluble and Insoluble Dietary Fibers. Environ Health Perspect 2022; 130:117003. [PMID: 36331819 PMCID: PMC9635512 DOI: 10.1289/ehp11360] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
BACKGROUND Perfluorooctane sulfonate (PFOS) is a persistent environmental pollutant that has become a significant concern around the world. Exposure to PFOS may alter gut microbiota and liver metabolic homeostasis in mammals, thereby increasing the risk of cardiometabolic diseases. Diets high in soluble fibers can ameliorate metabolic disease risks. OBJECTIVES We aimed to test the hypothesis that soluble fibers (inulin or pectin) could modulate the adverse metabolic effects of PFOS by affecting microbe-liver metabolism and interactions. METHODS Male C57BL/6J mice were fed an isocaloric diet containing different fibers: a) inulin (soluble), b) pectin (soluble), or c) cellulose (control, insoluble). The mice were exposed to PFOS in drinking water (3μg/g per day) for 7 wk. Multi-omics was used to analyze mouse liver and cecum contents. RESULTS In PFOS-exposed mice, the number of differentially expressed genes associated with atherogenesis and hepatic hyperlipidemia were lower in those that were fed soluble fiber than those fed insoluble fiber. Shotgun metagenomics showed that inulin and pectin protected against differences in microbiome community in PFOS-exposed vs. control mice. It was found that the plasma PFOS levels were lower in inulin-fed mice, and there was a trend of lower liver accumulation of PFOS in soluble fiber-fed mice compared with the control group. Soluble fiber intake ameliorated the effects of PFOS on host hepatic metabolism gene expression and cecal content microbiome structure. DISCUSSIONS Results from metabolomic, lipidomic, and transcriptomic studies suggest that inulin- and pectin-fed mice were less susceptible to PFOS-induced liver metabolic disturbance, hepatic lipid accumulation, and transcriptional changes compared with control diet-fed mice. Our study advances the understanding of interaction between microbes and host under the influences of environmental pollutants and nutrients. The results provide new insights into the microbe-liver metabolic network and the protection against environmental pollutant-induced metabolic diseases by high-fiber diets. https://doi.org/10.1289/EHP11360.
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Affiliation(s)
- Pan Deng
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
- Superfund Research Center, University of Kentucky, Lexington, Kentucky, USA
- Department of Pharmaceutical Sciences, University of Kentucky, Lexington, Kentucky, USA
| | - Jerika Durham
- Superfund Research Center, University of Kentucky, Lexington, Kentucky, USA
- Department of Toxicology and Cancer Biology, College of Medicine, University of Kentucky, Lexington, Kentucky, USA
| | - Jinpeng Liu
- Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA
| | - Xiaofei Zhang
- Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA
| | - Chi Wang
- Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA
| | - Dong Li
- Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, Kentucky, USA
| | - Taesik Gwag
- Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, Kentucky, USA
| | - Murong Ma
- Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, Kentucky, USA
| | - Bernhard Hennig
- Superfund Research Center, University of Kentucky, Lexington, Kentucky, USA
- Department of Animal and Food Sciences, College of Agriculture, Food and Environment, University of Kentucky, Lexington, Kentucky, USA
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Polzin A, Dannenberg L, Helten C, Metzen D, Duecker C, Marschall U, L Hoest H, Hennig B, Petzold T, Jung C, Levkau B, Zeus T, Schroer K, Hohlfeld T, Kelm M. Excess mortality in Aspirin and Dipyrone (Metamizole) co-medicated in patients with cardiovascular disease: a nationwide study. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Pain is a serious issue in our aging society. Metamizole is one of the most commonly used analgesics. In addition, metamizole has been shown to attenuate the pharmacodynamics response to aspirin as measured by platelet function tests. However, the extent to which this laboratory effect translates to clinical outcome in patients is unknown.
Methods
We conducted a nationwide analysis based on health insurance database including 9.2 million patients in Germany. All patients with a cardiovascular event in 2014 and subsequent secondary prevention with aspirin were followed up for 36 months. Inverse probability of treatment weighting (IPTW) analysis was performed to examine mortality rates between patients on aspirin-metamizole co-medication and aspirin medication alone. Myocardial infarction (MI) and stroke/transient ischemic attack (TIA) events were also documented.
Results
26,200 patients received continuous aspirin medication alone and 5,946 received co-medication with aspirin and metamizole. In the IPTW analysis, significantly increased mortality was observed in the co-medication group (15.6% vs. 24.4%, hazard ratio (HR)=1.66, 95% confidence interval (CI) 1.56–1.76; p<0.0001). MI and stroke/TIA were also increased (MI: 1,370 [5.2%] vs. 355 [5.9%]; HR=1.18, 95% CI 1.05–1.32; p=0.0066, relative risk (RR) 1.14, absolute risk increase (ARI) 0.71%, number needed to harm (NNH) 140. Stroke/TIA: 1,901 [7.3%] vs. 506 [8.5%]; HR=1.22, 95% CI 1.11–1.35; p<0.0001, RR 1.17, ARI 1.21%, NNH 82).
Conclusion
In this nationwide observational study, aspirin-metamizole co-medication was associated with excess mortality. This was partly due to ischemic events (MI and stroke/TIA), which were also more frequent in the co-medication patients. Therefore, metamizole should be used with caution in aspirin-treated patients for secondary prevention
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- A Polzin
- Heinrich Heine University, Department of Cardiology, Pulmonology, and Vascular Medicine , Duesseldorf , Germany
| | - L Dannenberg
- Heinrich Heine University, Department of Cardiology, Pulmonology, and Vascular Medicine , Duesseldorf , Germany
| | - C Helten
- Heinrich Heine University, Department of Cardiology, Pulmonology, and Vascular Medicine , Duesseldorf , Germany
| | - D Metzen
- Heinrich Heine University, Department of Cardiology, Pulmonology, and Vascular Medicine , Duesseldorf , Germany
| | - C Duecker
- Georg-August University, Institute for Clinical Pharmacology , Goettingen , Germany
| | - U Marschall
- BARMER Statutory Health Insurance Fund , wuppertal , Germany
| | - H L Hoest
- BARMER Statutory Health Insurance Fund , wuppertal , Germany
| | - B Hennig
- BARMER Statutory Health Insurance Fund , wuppertal , Germany
| | - T Petzold
- Ludwig-Maximilians University, Medizinische Klinik und Poliklinik I , Munich , Germany
| | - C Jung
- Heinrich Heine University, Department of Cardiology, Pulmonology, and Vascular Medicine , Duesseldorf , Germany
| | - B Levkau
- Heinrich Heine University, Institute of Molecular Medicine III , Duesseldorf , Germany
| | - T Zeus
- Heinrich Heine University, Department of Cardiology, Pulmonology, and Vascular Medicine , Duesseldorf , Germany
| | - K Schroer
- Heinrich Heine University, Institute for Pharmacology and Clinical Pharmacology , Duesseldorf , Germany
| | - T Hohlfeld
- Heinrich Heine University, Institute for Pharmacology and Clinical Pharmacology , Duesseldorf , Germany
| | - M Kelm
- Heinrich Heine University, Department of Cardiology, Pulmonology, and Vascular Medicine , Duesseldorf , Germany
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Hennig B, Deng P. Healthful nutrition decreases vulnerability to environmental pollutant-induced inflammatory diseases: Implications in atherosclerosis. Atherosclerosis 2022. [DOI: 10.1016/j.atherosclerosis.2022.06.281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Deng P, Valentino T, Flythe MD, Moseley HNB, Leachman JR, Morris AJ, Hennig B. Untargeted Stable Isotope Probing of the Gut Microbiota Metabolome Using 13C-Labeled Dietary Fibers. J Proteome Res 2021; 20:2904-2913. [PMID: 33830777 DOI: 10.1021/acs.jproteome.1c00124] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The gut microbiome generates numerous metabolites that exert local effects and enter the circulation to affect the functions of many organs. Despite extensive sequencing-based characterization of the gut microbiome, there remains a lack of understanding of microbial metabolism. Here, we developed an untargeted stable isotope-resolved metabolomics (SIRM) approach for the holistic study of gut microbial metabolites. Viable microbial cells were extracted from fresh mice feces and incubated anaerobically with 13C-labeled dietary fibers including inulin or cellulose. High-resolution mass spectrometry was used to monitor 13C enrichment in metabolites associated with glycolysis, the Krebs cycle, the pentose phosphate pathway, nucleotide synthesis, and pyruvate catabolism in both microbial cells and the culture medium. We observed the differential use of inulin and cellulose as substrates for biosynthesis of essential and non-essential amino acids, neurotransmitters, vitamin B5, and other coenzymes. Specifically, the use of inulin for these biosynthetic pathways was markedly more efficient than the use of cellulose, reflecting distinct metabolic pathways of dietary fibers in the gut microbiome, which could be related with host effects. This technology facilitates deeper and holistic insights into the metabolic function of the gut microbiome (Metabolomic Workbench Study ID: ST001651).
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Affiliation(s)
- Pan Deng
- Superfund Research Center, University of Kentucky, Lexington 40536, Kentucky, United States.,Department of Pharmaceutical Sciences, University of Kentucky, Lexington 40536, Kentucky, United States
| | - Taylor Valentino
- Department of Physiology, University of Kentucky, Lexington 40536, Kentucky, United States
| | - Michael D Flythe
- Department of Animal and Food Sciences, University of Kentucky, Lexington 40536, Kentucky, United States.,United States Department of Agriculture, Agriculture Research Service, Forage Animal Production Research Unit, Lexington 40536, Kentucky, United States
| | - Hunter N B Moseley
- Superfund Research Center, University of Kentucky, Lexington 40536, Kentucky, United States.,Institute for Biomedical Informatics, University of Kentucky, Lexington 40536, Kentucky, United States.,Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington 40536, Kentucky, United States
| | - Jacqueline R Leachman
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington 40536, Kentucky, United States
| | - Andrew J Morris
- Superfund Research Center, University of Kentucky, Lexington 40536, Kentucky, United States.,Division of Cardiovascular Medicine, University of Kentucky, Lexington 40536, Kentucky, United States
| | - Bernhard Hennig
- Superfund Research Center, University of Kentucky, Lexington 40536, Kentucky, United States.,Department of Animal and Food Sciences, University of Kentucky, Lexington 40536, Kentucky, United States
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8
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Hennig B, Deng P. Healthful nutrition as a prevention and intervention paradigm to decrease the vulnerability to environmental toxicity or stressors and associated inflammatory disease risks. Food Front 2020; 1:13-14. [PMID: 33073239 DOI: 10.1002/fft2.6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Bernhard Hennig
- University of Kentucky Superfund Research Center, University of Kentucky, Lexington, KY, USA
| | - Pan Deng
- University of Kentucky Superfund Research Center, University of Kentucky, Lexington, KY, USA
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Deng P, Wang C, Wahlang B, Sexton T, Morris AJ, Hennig B. Co-exposure to PCB126 and PFOS increases biomarkers associated with cardiovascular disease risk and liver injury in mice. Toxicol Appl Pharmacol 2020; 409:115301. [PMID: 33096110 DOI: 10.1016/j.taap.2020.115301] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 09/08/2020] [Accepted: 10/18/2020] [Indexed: 02/07/2023]
Abstract
Polychlorinated biphenyl (PCB)126 and perfluorooctane sulfonic acid (PFOS) are halogenated organic pollutants of high concern. Exposure to these chemicals is ubiquitous, and can lead to potential synergistic adverse effects in individuals exposed to both classes of chemicals. The present study was designed to identify interactions between PCB126 and PFOS that might promote acute changes in inflammatory pathways associated with cardiovascular disease and liver injury. Male C57BL/6 mice were exposed to vehicle, PCB126, PFOS, or a mixture of both pollutants. Plasma and liver samples were collected at 48 h after exposure. Changes in the expression of hepatic genes involved in oxidative stress, inflammation, and atherosclerosis were investigated. Plasma and liver samples was analyzed using untargeted lipidomic method. Hepatic mRNA levels for Nqo1, Icam1, and PAI1 were significantly increased in the mixture-exposed mice. Plasma levels of PAI1, a marker of fibrosis and thrombosis, were also significantly elevated in the mixture-exposed group. Liver injury was observed only in the mixture-exposed mice. Lipidomic analysis revealed that co-exposure to the mixture enhanced hepatic lipid accumulation and elevated oxidized phospholipids levels. In summary, this study shows that acute co-exposure to PCB126 and PFOS in mice results in liver injury and increased cardiovascular disease risk.
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Affiliation(s)
- Pan Deng
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA; Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536, USA
| | - Chunyan Wang
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA
| | - Banrida Wahlang
- Superfund Research Center, University of Louisville, Louisville, KY 40202, USA
| | - Travis Sexton
- Division of Cardiovascular Medicine, The Gill Heart and Vascular Institute, College of Medicine, University of Kentucky, and Lexington Veterans Affairs Medical Center, Lexington, KY, 40536, USA
| | - Andrew J Morris
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA; Division of Cardiovascular Medicine, The Gill Heart and Vascular Institute, College of Medicine, University of Kentucky, and Lexington Veterans Affairs Medical Center, 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.
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10
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Hoffman JB, Petriello MC, Morris AJ, Mottaleb MA, Sui Y, Zhou C, Deng P, Wang C, Hennig B. Prebiotic inulin consumption reduces dioxin-like PCB 126-mediated hepatotoxicity and gut dysbiosis in hyperlipidemic Ldlr deficient mice. Environ Pollut 2020; 261:114183. [PMID: 32105967 PMCID: PMC7220843 DOI: 10.1016/j.envpol.2020.114183] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/25/2020] [Accepted: 02/11/2020] [Indexed: 05/04/2023]
Abstract
Exposure to some environmental pollutants increases the risk of developing inflammatory disorders such as steatosis and cardiometabolic diseases. Diets high in fermentable fibers such as inulin can modulate the gut microbiota and lessen the severity of pro-inflammatory diseases, especially in individuals with elevated circulating cholesterol. Thus, we aimed to test the hypothesis that hyperlipidemic mice fed a diet enriched with 8% inulin would be protected from the pro-inflammatory toxic effects of PCB 126. Four groups of male Ldlr-/- mice were fed a high cholesterol diet containing 8% inulin or 8% cellulose (control) for 12 weeks. At weeks 2 and 4, mice were exposed to PCB 126 or vehicle (control). PCB 126 exposure induced wasting and impaired glucose tolerance, which were attenuated by inulin consumption. PCB 126 exposure induced hepatic lipid accumulation and increased inflammatory gene expression, which were both decreased by inulin consumption. In addition, inulin feeding decreased atherosclerotic lesion development in the aortic root and modulated the expression of enzymes related to glycolysis. Finally, 16S rRNA sequencing of gut microbial populations showed that PCB 126 modulated multiple microbiota genera (e.g., 3-fold decrease in Allobaculum and 3-fold increase in Coprococcus) which were normalized in inulin fed mice. Overall our data support the hypothesis that a dietary intervention that targets the gut microbiota may be an effective means of attenuating dioxin-like pollutant-mediated diseases.
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Affiliation(s)
- 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
| | - 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
| | - 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
| | - M Abdul Mottaleb
- 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
| | - Yipeng Sui
- Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, USA
| | - Changcheng Zhou
- Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, USA
| | - Pan Deng
- 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
| | - Chunyan Wang
- 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
| | - 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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11
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Wang L, Simal‐Gandara J, Du M, Lu B, Quiles JL, Chen Z, Hennig B, Wang M, Xiao H, Arcot J, Yue T, Zheng B, Zou X, Marunaka Y, Ai L, Bai W, Battino M, Giampieri F, Georgiev MI, Liao X, Guven EC, Ismail A, Jafari SM, Li C, Mocan A, Wang J, Sun C, Xu BB, Yin J, Zengin G, Delmas D, Daglia M, Campos MG, Chen F, Xiong YL, Tundis R, Nie S, Xiao J. Food Frontiers
: An academically sponsored new journal. Food Frontiers 2020. [DOI: 10.1002/fft2.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Li‐Shu Wang
- Department of Medicine, Division of Hematology and Oncology Medical College of Wisconsin Milwaukee Wisconsin
| | - Jesus Simal‐Gandara
- Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology University of Vigo Ourense Spain
| | - Ming Du
- School of Food Science and Technology, National Engineering Research Center of Seafood Dalian Polytechnic University Dalian China
| | - Baiyi Lu
- College of Biosystems Engineering and Food Science Zhejiang University Hangzhou China
| | - José L. Quiles
- Institute of Nutrition and Food Technology “José Mataix Verdú”, Department of Physiology, Biomedical Research Center University of Granada Granada Spain
| | - Zhen‐Yu Chen
- School of Life Sciences The Chinese University of Hong Kong Shatin Hong Kong China
| | - Bernhard Hennig
- University of Kentucky Superfund Research Center University of Kentucky Lexington Kentucky
| | - Mingfu Wang
- School of Biological Sciences University of Hong Kong Pokfulam Hong Kong
| | - Hang Xiao
- Department of Food Science University of Massachusetts Amherst Massachusetts
| | - Jayashree Arcot
- Food and Health Cluster, School of Chemical Engineering The University of New South Wales New South Wales Australia
| | - Tianli Yue
- Collage of Food Science and Technology Northwest University Xi'an China
| | - Baodong Zheng
- College of Food Science Fujian Agriculture and Forestry University Fuzhou China
| | - Xiaobo Zou
- College of Food and Biological Engineering Jiangsu University Zhenjiang China
| | - Yoshinori Marunaka
- Research Institute for Clinical Physiology Kyoto Industrial Health Association Kyoto Japan
- Research Center for Drug Discovery and Pharmaceutical Development Science, Research Organization of Science and Technology Ritsumeikan University Kusatsu Japan
- Department of Molecular Cell Physiology Kyoto Prefectural University of Medicine Kyoto Japan
| | - Lianzhong Ai
- School of Medical Instrument and Food Engineering University of Shanghai for Science and Technology Shanghai China
| | - Weibin Bai
- Department of Food Science and Engineering Institute of Food Safety and Nutrition Jinan University Guangzhou China
| | - Maurizio Battino
- Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology University of Vigo Ourense Spain
- Department of Clinical Sciences Università Politecnica delle Marche Ancona Italy
| | - Francesca Giampieri
- Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology University of Vigo Ourense Spain
- Department of Clinical Sciences Università Politecnica delle Marche Ancona Italy
| | - Milen I. Georgiev
- Institute of Microbiology Bulgarian Academy of Sciences Plovdiv Bulgaria
| | - Xiaojun Liao
- College of Food Science and Nutritional Engineering China Agricultural University Beijing China
| | - Esra Capanoglu Guven
- Food Engineering Department, Faculty of Chemical & Metallurgical Engineering Istanbul Technical University Maslak Turkey
| | - Amin Ismail
- Center for Quality Assurance (CQA) Universiti Putra Malaysia Serdang Malaysia
| | - Seid Mahdi Jafari
- Department of Food Materials and Process Design Engineering Gorgan University of Agricultural Science and Natural Resources Gorgan Iran
| | - Chuan Li
- College of Food Science and Technology Hainan University Haikou China
| | - Andrei Mocan
- Department of Pharmaceutical Botany Iuliu Hațieganu University of Medicine and Pharmacy Cluj‐Napoca Romania
| | - Jing Wang
- School of Food & Chemical Engineering Beijing Technology & Business University Beijing China
| | - Congde Sun
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement Zhejiang University Hangzhou China
| | - Bruce Baojun Xu
- Food Science and Technology Program Beijing Normal University‐Hong Kong Baptist University United International College Zhuhai China
| | - Junyi Yin
- State Key Laboratory of Food Science and Technology Nanchang University Nanchang China
| | - Gökhan Zengin
- Department of Biology, Science Faculty Selcuk University, Campus/Konya Turkey
| | - Dominique Delmas
- Université de Bourgogne‐Franche Comté Dijon France
- Centre de Recherche INSERM U1231‐Cancer and Adaptative Immune Response Team–Bioactive Molecules and Health Research Group Dijon France
| | - Maria Daglia
- Department of Pharmacy University of Naples Federico II Naples Italy
| | - Maria G. Campos
- Faculty of Pharmacy University of Coimbra Coimbra Portugal
- Coimbra Chemistry Centre (CQC, FCT Unit 313) (FCTUC) University of Coimbra Coimbra Portugal
| | - Fang Chen
- College of Food Science and Nutritional Engineering China Agricultural University Beijing China
| | - Youling L. Xiong
- Department of Animal and Food Sciences University of Kentucky Lexington Kentucky
| | - Rosa Tundis
- Department of Pharmacy, Health and Nutritional Sciences University of Calabria Cosenza Italy
| | - Shaoping Nie
- State Key Laboratory of Food Science and Technology, China‐Canada Joint Lab of Food Science and Technology (Nanchang) Nanchang University Nanchang China
| | - Jianbo Xiao
- State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical Sciences University of Macau Macau China
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12
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Abstract
Abstract
Four methylation methods were evaluated for use in the gas chromatographic (GC) quantitation of conjugated linoleic acid (CLA) isomers, which are potential anticarcinogen. The methods were (1) sodium methoxide in methanol (NaOMe-MeOH), (2) American Oil Chemists' Society (AOCS) procedure Ce 2-66, which involves methanolic sodium hydroxide followed by boron trifluoride in methanol, (3) tetramethylguanidine in methanol (TMG-MeOH), and (4) direct transesterification with methanolbenzene- acetyl chloride (DAC). Purified methyl esters of isomerized linoleic acid containing 86% CLA isomers were methylated and analyzed by GC. The AOCS and DAC methods resulted in 3 and 50% losses in cis-9,trans-11-octadecadienoic acid (9c, 111 CLA isomer) and trans-10,cis-12 octadecadienoic acid (10t, 12c CLA isomers), respectively. Compared with the control, the AOCS and DAC methods increased the yield of the trans,trans CLA isomers (trans-9,trans-11- and trans-10, trans-12-octadecadienoic acid) by 1.07-fold and a 10-fold, respectively. A non-CLA artifact that eluted close to CLA peaks was formed during methylation by the AOCS and DAC methods. Thus, the DAC and AOCS methods are not suitable for quantitation of CLA isomers. The NaOMe-MeOH and TMG-MeOH methods, however, are suitable for quantitation of CLA isomers in fats containing low concentrations of free fatty acids.
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Affiliation(s)
- Nalur Chandrasekaran Shantha
- University of Kentucky, Department of Animal Sciences, Food Science Section, 412, W.P. Garrigus Bldg, Lexington, KY 40546-0215
- University of Kentucky, Department of Animal Sciences, Food Science Section, 412, W.P. Garrigus Bldg, Lexington, KY 40546-0215
| | - Eric Andrew Decker
- University of Kentucky, Department of Animal Sciences, Food Science Section, 412, W.P. Garrigus Bldg, Lexington, KY 40546-0215
| | - Bernhard Hennig
- University of Kentucky, Department of Animal Sciences, Food Science Section, 412, W.P. Garrigus Bldg, Lexington, KY 40546-0215
- University of Kentucky, Department of Nutrition and Food Science
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13
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Deng P, Hoffman JB, Petriello MC, Wang CY, Li XS, Kraemer MP, Morris AJ, Hennig B. Dietary inulin decreases circulating ceramides by suppressing neutral sphingomyelinase expression and activity in mice. J Lipid Res 2019; 61:45-53. [PMID: 31604806 DOI: 10.1194/jlr.ra119000346] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 10/09/2019] [Indexed: 01/26/2023] Open
Abstract
Elevated circulating levels of ceramides (Cers) are associated with increased risk of cardiometabolic diseases, and Cers may play a causative role in metabolic dysfunction that precedes cardiac events, such as mortality as a result of coronary artery disease. Although the mechanisms involved are likely complex, these associations suggest that lowering circulating Cer levels could be protective against cardiovascular diseases. Conversely, dietary fibers, such as inulin, have been reported to promote cardiovascular and metabolic health. However, the mechanisms involved in these protective processes also are not well understood. We studied the effects of inulin on lipid metabolism with a model of atherosclerosis in LDL receptor-deficient mice using lipidomics and transcriptomics. Plasma and tissues were collected at 10 days and/or 12 weeks after feeding mice an atherogenic diet supplemented with inulin or cellulose (control). Compared with controls, inulin-fed mice displayed a decreased C16:0/C24:0 plasma Cer ratio and lower levels of circulating Cers associated with VLDL and LDL. Liver transcriptomic analysis revealed that Smpd3, a gene that encodes neutral SMase (NSMase), was downregulated by 2-fold in inulin-fed mice. Hepatic NSMase activity was 3-fold lower in inulin-fed mice than in controls. Furthermore, liver redox status and compositions of phosphatidylserine and FFA species, the major factors that determine NSMase activity, were also modified by inulin. Taken together, these results showed that, in mice, inulin can decrease plasma Cer levels through reductions in NSMase expression and activity, suggesting a mechanism by which fiber could reduce cardiometabolic disease risk.
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Affiliation(s)
- Pan Deng
- 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
| | - Jessie B Hoffman
- Superfund Research Center, University of Kentucky, Lexington, KY 40536; Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40536
| | - Michael C Petriello
- Superfund Research Center, University of Kentucky, Lexington, KY 40536; Division of Cardiovascular Medicine, College of Medicine and Lexington Veterans Affairs Medical Center, University of Kentucky, Lexington, KY 40536
| | - Chun-Yan Wang
- 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
| | - Xu-Sheng Li
- Superfund Research Center, University of Kentucky, Lexington, KY 40536; Department of Food Science and Engineering, Jinan University, Guangzhou, China 510632
| | - Maria P Kraemer
- Division of Cardiovascular Medicine, College of Medicine and Lexington Veterans Affairs Medical Center, University of Kentucky, Lexington, KY 40536
| | - Andrew J Morris
- Superfund Research Center, University of Kentucky, Lexington, KY 40536; Division of Cardiovascular Medicine, College of Medicine and Lexington Veterans Affairs Medical Center, 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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14
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Deng P, Li X, Petriello MC, Wang C, Morris AJ, Hennig B. Application of metabolomics to characterize environmental pollutant toxicity and disease risks. Rev Environ Health 2019; 34:251-259. [PMID: 31408434 PMCID: PMC6915040 DOI: 10.1515/reveh-2019-0030] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 07/23/2019] [Indexed: 05/08/2023]
Abstract
The increased incidence of non-communicable human diseases may be attributed, at least partially, to exposures to toxic chemicals such as persistent organic pollutants (POPs), air pollutants and heavy metals. Given the high mortality and morbidity of pollutant exposure associated diseases, a better understanding of the related mechanisms of toxicity and impacts on the endogenous host metabolism are needed. The metabolome represents the collection of the intermediates and end products of cellular processes, and is the most proximal reporter of the body's response to environmental exposures and pathological processes. Metabolomics is a powerful tool for studying how organisms interact with their environment and how these interactions shape diseases related to pollutant exposure. This mini review discusses potential biological mechanisms that link pollutant exposure to metabolic disturbances and chronic human diseases, with a focus on recent studies that demonstrate the application of metabolomics as a tool to elucidate biochemical modes of actions of various environmental pollutants. In addition, classes of metabolites that have been shown to be modulated by multiple environmental pollutants will be discussed with an emphasis on their use as potential early biomarkers of disease risks. Taken together, metabolomics is a useful and versatile tool for characterizing the disease risks and mechanisms associated with various environmental pollutants.
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Affiliation(s)
- Pan Deng
- Superfund Research Center, University of Kentucky, Lexington, KY, USA 40536
- Department of Animal and Food Sciences, College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY, USA 40536
| | - Xusheng Li
- Superfund Research Center, University of Kentucky, Lexington, KY, USA 40536
- Department of Food Science and Engineering, Institute of Food Safety and Nutrition, College of Science & Engineering, Jinan University, Guangzhou, PR China 510632
| | - Michael C. Petriello
- Superfund Research Center, University of Kentucky, Lexington, KY, USA 40536
- Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, and Lexington Veterans Affairs Medical Center, Lexington, KY, USA 40536
| | - Chunyan Wang
- Superfund Research Center, University of Kentucky, Lexington, KY, USA 40536
- Department of Animal and Food Sciences, College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY, USA 40536
| | - Andrew J. Morris
- Superfund Research Center, University of Kentucky, Lexington, KY, USA 40536
- Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, and Lexington Veterans Affairs Medical Center, Lexington, KY, USA 40536
| | - Bernhard Hennig
- Superfund Research Center, University of Kentucky, Lexington, KY, USA 40536
- Department of Animal and Food Sciences, College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY, USA 40536
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15
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Hennig B. International scientists seek solutions for environmental problems. Rev Environ Health 2019; 34:225. [PMID: 31430256 PMCID: PMC6920627 DOI: 10.1515/reveh-2019-0058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- Bernhard Hennig
- Superfund Research Center, University of Kentucky, 900 S. Limestone Street, Lexington, KY 40536, USA
- Department of Animal and Food Sciences, College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY 40536, USA, Phone: +1 859-218-1387
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16
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Hardesty JE, Wahlang B, Falkner KC, Shi H, Jin J, Zhou Y, Wilkey DW, Merchant ML, Watson CT, Feng W, Morris AJ, Hennig B, Prough RA, Cave MC. Proteomic Analysis Reveals Novel Mechanisms by Which Polychlorinated Biphenyls Compromise the Liver Promoting Diet-Induced Steatohepatitis. J Proteome Res 2019; 18:1582-1594. [PMID: 30807179 DOI: 10.1021/acs.jproteome.8b00886] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Environmental pollution contributes to fatty liver disease pathogenesis. Polychlorinated biphenyl (PCB) exposures have been associated with liver enzyme elevation and suspected steatohepatitis in cohort studies. Male mice treated with the commercial PCB mixture, Aroclor 1260 (20 mg/kg), and fed high fat diet (HFD) for 12 weeks developed steatohepatitis. Receptor-based modes of action including inhibition of the epidermal growth factor (EGF) receptor were previously proposed, but other mechanisms likely exist. Objectives were to identify and validate the pathways, transcription factors, and mechanisms responsible for the steatohepatitis associated with PCB and HFD coexposures. Comparative proteomics analysis was performed in archived mouse liver samples from the aforementioned chronic exposure study. Pathway and transcription factor analysis (TFA) was performed, and selected results were validated. Liver proteomics detected 1103 unique proteins. Aroclor 1260 upregulated 154 and downregulated 93 of these. Aroclor 1260 + HFD coexposures affected 55 pathways including glutathione metabolism, intermediary metabolism, and cytoskeletal remodeling. TFA of Aroclor 1260 treatment demonstrated alterations in the function of 42 transcription factors including downregulation of NRF2 and key nuclear receptors previously demonstrated to protect against steatohepatitis (e.g., HNF4α, FXR, PPARα/δ/γ, etc.). Validation studies demonstrated that Aroclor 1260 significantly reduced HNF4α protein levels, while Aroclor 1260 + HFD reduced expression of the HNF4α target gene, albumin, in vivo. Aroclor 1260 attenuated EGF-dependent HNF4α phosphorylation and target gene activation in vitro. Aroclor 1260 reduced levels of NRF2, its target genes, and glutathione in vivo. Aroclor 1260 attenuated EGF-dependent NRF2 upregulation, in vitro. Aroclor 1260 indirectly activated hepatic stellate cells in vitro via induction of hepatocyte-derived TGFβ. PCB exposures adversely impacted transcription factors regulating liver protection, function, and fibrosis. PCBs, thus, compromised the liver by reducing its protective responses against nutritional stress to promote diet-induced steatohepatitis. The identified mechanisms by which environmental pollutants influence fatty liver disease pathogenesis require confirmation in humans.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Andrew J Morris
- Superfund Research Center , University of Kentucky , Lexington , Kentucky 40536 , United States
| | - Bernhard Hennig
- Superfund Research Center , University of Kentucky , Lexington , Kentucky 40536 , United States
| | | | - Matthew C Cave
- The Robley Rex Veterans Affairs Medical Center , Louisville , Kentucky 40206 , United States.,The Jewish Hospital Liver Transplant Program , Louisville , Kentucky 40202 , United States
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17
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Petriello MC, Brandon JA, Hoffman J, Wang C, Tripathi H, Abdel-Latif A, Ye X, Li X, Yang L, Lee E, Soman S, Barney J, Wahlang B, Hennig B, Morris AJ. Dioxin-like PCB 126 Increases Systemic Inflammation and Accelerates Atherosclerosis in Lean LDL Receptor-Deficient Mice. Toxicol Sci 2019; 162:548-558. [PMID: 29216392 DOI: 10.1093/toxsci/kfx275] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Exposure to dioxins and related persistent organic pollutants likely contributes to cardiovascular disease (CVD) risk through multiple mechanisms including the induction of chronic inflammation. Epidemiological studies have shown that leaner individuals may be more susceptible to the detrimental effects of lipophilic toxicants because they lack large adipose tissue depots that can accumulate and sequester these pollutants. This phenomenon complicates efforts to study mechanisms of pollutant-accelerated atherosclerosis in experimental animal models where high-fat feeding and adipose expansion limit the bioavailability of lipophilic pollutants. Here, we investigated whether a model dioxin-like pollutant, PCB 126, could increase inflammation and accelerate atherosclerosis in Ldlr-/- mice fed a low-fat atherogenic diet. We fed Ldlr-/- mice the Clinton/Cybulsky diet (10% kcal fat, 0.15% cholesterol) and sacrificed mice at 8, 10, or 12 weeks postPCB (2 doses of 1 μmol/kg) or vehicle gavage. To characterize this novel model, we examined the effects of PCB 126 on markers of systemic inflammation, hematological indices, fatty livers, and atherosclerotic lesion size. Mice exposed to PCB 126 exhibited significantly increased plasma inflammatory cytokine levels, increased circulating biomarkers of CVD, altered platelet, and red blood cell counts, increased accumulation of hepatic fatty acids, and accelerated atherosclerotic lesion formation in the aortic root. PCB 126 also increased circulating neutrophils, monocytes, and macrophages as determined by flow cytometry analysis. Exposure to dioxin-like PCB 126 increases inflammation and accelerates atherosclerosis in mice. This low-fat atherogenic diet may provide a useful tool to study the mechanisms linking exposure to lipophilic pollutants to increased risk of CVD.
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Affiliation(s)
- Michael C Petriello
- Division of Cardiovascular Medicine, College of Medicine.,Superfund Research Center, University of Kentucky, Lexington, Kentucky 40536.,Lexington Veterans Affairs Medical Center, Lexington, Kentucky 40502
| | | | - Jessie Hoffman
- Superfund Research Center, University of Kentucky, Lexington, Kentucky 40536.,Department of Pharmacology and Nutritional Sciences, College of Medicine
| | - Chunyan Wang
- Superfund Research Center, University of Kentucky, Lexington, Kentucky 40536.,Department of Animal and Food Sciences, College of Agriculture Food and Environment
| | - Himi Tripathi
- Gill Heart and Vascular Institute and Division of Cardiovascular Medicine
| | - Ahmed Abdel-Latif
- Gill Heart and Vascular Institute and Division of Cardiovascular Medicine
| | - Xiang Ye
- Department of Physiology, Saha Cardiovascular Research Center
| | - Xiangan Li
- Department of Physiology, Saha Cardiovascular Research Center
| | - Liping Yang
- Division of Cardiovascular Medicine, College of Medicine
| | - Eun Lee
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Kentucky, Lexington, Kentucky 40536
| | - Sony Soman
- Division of Cardiovascular Medicine, College of Medicine.,Superfund Research Center, University of Kentucky, Lexington, Kentucky 40536.,Lexington Veterans Affairs Medical Center, Lexington, Kentucky 40502
| | - Jazmyne Barney
- Superfund Research Center, University of Kentucky, Lexington, Kentucky 40536
| | - Banrida Wahlang
- Superfund Research Center, University of Kentucky, Lexington, Kentucky 40536
| | - Bernhard Hennig
- Superfund Research Center, University of Kentucky, Lexington, Kentucky 40536.,Department of Animal and Food Sciences, College of Agriculture Food and Environment
| | - Andrew J Morris
- Division of Cardiovascular Medicine, College of Medicine.,Superfund Research Center, University of Kentucky, Lexington, Kentucky 40536.,Lexington Veterans Affairs Medical Center, Lexington, Kentucky 40502
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18
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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: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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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19
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Deng P, Barney J, Petriello MC, Morris AJ, Wahlang B, Hennig B. Hepatic metabolomics reveals that liver injury increases PCB 126-induced oxidative stress and metabolic dysfunction. Chemosphere 2019; 217:140-149. [PMID: 30415113 PMCID: PMC6626632 DOI: 10.1016/j.chemosphere.2018.10.196] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 10/26/2018] [Accepted: 10/29/2018] [Indexed: 05/04/2023]
Abstract
The deleterious effects of PCB 126 are complex, and the role of the liver in modifying toxic insult is not well understood. We utilized metabolomics approaches to compare liver metabolites significantly affected by PCB 126 in control mice and a diet induced liver injury mouse model. In this 14-week study, mice were fed either an amino acid supplemented control diet (CD) or a methionine-choline deficient diet (MCD) which promoted nonalcoholic steatohepatitis (NASH) and were subsequently exposed to PCB 126. The liver metabolome was profiled by a global metabolomic analysis using LC-MS. There were clear differences between PCB 126 exposed and control mice in the hepatic metabolomic profiles (216 and 266 metabolites were altered in CD-fed and MCD-fed mice respectively after PCB 126 exposure). PCB 126 modulated glycerophospholipid metabolism, glutathione metabolism, and CoA biosynthesis pathways irrespective of diet; indicating that the disturbance in lipid metabolism and thiol metabolites are general markers of PCB 126 exposure irrespective of liver health. Additionally, metabolites associated with oxidative stress and mitochondrial dysfunction were greatly elevated in PCB 126 exposed mice with compromised livers (e.g., 4-hydroxy-nonenal glutathione, oxylipids, uric acid, and acylcarnitines). Moreover, PCB 126 exposure downregulated redox genes, and the effect was more pronounced in liver injury mice. In conclusion, this study demonstrates that PCB 126 could induce oxidative stress and metabolic dysfunction, and pre-existing liver injury can markedly modify PCB 126-induced metabolic changes. Using metabolic profiling, this study suggests mechanism of enhanced PCB 126 toxicity under liver injury settings.
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Affiliation(s)
- Pan Deng
- 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
| | - Jazmyne Barney
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA; Department of Toxicology and Cancer Biology, College of Medicine, University of Kentucky, Lexington, KY 40536, USA
| | - Michael C Petriello
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA; Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, Lexington, KY 40536, USA
| | - Andrew J Morris
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA; Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, Lexington, KY 40536, USA
| | - 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; Superfund Research Center, University of Louisville, Louisville, KY 40202, 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.
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20
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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. Environ Pollut 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] [What about the content of this article? (0)] [Affiliation(s)] [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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Hoffman J, Petriello M, Barney J, Deng P, Flythe M, Hennig B. Prebiotic Fiber (Inulin) Attenuates PCB 126-Induced Disruption of Gut Microbiota and Host Metabolism. J Acad Nutr Diet 2018. [DOI: 10.1016/j.jand.2018.08.110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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22
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Hennig B, Petriello M. Nutritional modulation of the toxicity of environmental pollutants and implications in atherosclerosis. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Wahlang B, Barney J, Thompson B, Wang C, Hamad OM, Hoffman JB, Petriello MC, Morris AJ, Hennig B. Editor's Highlight: PCB126 Exposure Increases Risk for Peripheral Vascular Diseases in a Liver Injury Mouse Model. Toxicol Sci 2018; 160:256-267. [PMID: 28973532 DOI: 10.1093/toxsci/kfx180] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The liver is vital for xenobiotic and endobiotic metabolism. Previously, we demonstrated that a compromised liver worsened toxicity associated with exposure to polychlorinated biphenyls (PCBs), through disruption of energy homeostasis. However, the role of a compromised liver in defining dioxin-like PCB126 toxicity on the peripheral vasculature and associated inflammatory diseases is yet to be studied. This study investigated the effects of PCB126 on vascular inflammation linked to hepatic dysfunction utilizing a liver injury mouse model. Male C57Bl/6 mice were fed either an amino acid control diet (CD) or a methionine-choline deficient (MCD) diet in this 14-week study. Mice were exposed to PCB126 (0.5 mg/kg) and analyzed for inflammatory, calorimetric and metabolic parameters. MCD diet-fed mice demonstrated steatosis, indicative of a compromised liver. Mice fed the MCD-diet and subsequently exposed to PCB126 manifested lower body fat mass, increased liver to body weight ratio and alterations in hepatic gene expression related to lipid and carbohydrate metabolism, implicating metabolic disturbances. PCB126-induced steatosis irrespective of the diet type, but only the MCD + PCB126 group exhibited steatohepatitis and fibrosis. Furthermore, PCB126 exposure in MCD-fed mice led to increased plasma inflammatory markers such as Icam-1, plasminogen activator inhibitor-1 and proatherogenic trimethylamine-N-oxide, suggesting inflammation of the peripheral vasculature that is characteristic of atherosclerosis. Taken together, our data provide new evidence of a link between a compromised liver, PCB-mediated hepatic inflammation and vascular inflammatory markers, suggesting that environmental pollutants can promote crosstalk between different organ systems, leading to inflammatory disease pathologies.
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Affiliation(s)
- Banrida Wahlang
- University of Kentucky Superfund Research Center.,Department of Animal and Food Sciences, College of Agriculture, Food and Environment
| | - Jazmyne Barney
- University of Kentucky Superfund Research Center.,Department of Toxicology and Cancer Biology, College of Medicine
| | - Brendan Thompson
- University of Kentucky Superfund Research Center.,Department of Toxicology and Cancer Biology, College of Medicine
| | - Chunyan Wang
- University of Kentucky Superfund Research Center.,Department of Animal and Food Sciences, College of Agriculture, Food and Environment
| | - Omer M Hamad
- University of Kentucky Superfund Research Center
| | - Jessie B Hoffman
- University of Kentucky Superfund Research Center.,Graduate Center for Nutritional Sciences, College of Medicine
| | - Michael C Petriello
- University of Kentucky Superfund Research Center.,Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, Lexington, Kentucky 40536.,Lexington Veterans Affairs Medical Center, Lexington, Kentucky
| | - Andrew J Morris
- University of Kentucky Superfund Research Center.,Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, Lexington, Kentucky 40536.,Lexington Veterans Affairs Medical Center, Lexington, Kentucky
| | - Bernhard Hennig
- University of Kentucky Superfund Research Center.,Department of Animal and Food Sciences, College of Agriculture, Food and Environment.,Department of Toxicology and Cancer Biology, College of Medicine.,Graduate Center for Nutritional Sciences, College of Medicine
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24
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Petriello MC, Charnigo R, Sunkara M, Soman S, Pavuk M, Birnbaum L, Morris AJ, Hennig B. Relationship between serum trimethylamine N-oxide and exposure to dioxin-like pollutants. Environ Res 2018; 162:211-218. [PMID: 29353125 PMCID: PMC5811317 DOI: 10.1016/j.envres.2018.01.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 01/08/2018] [Accepted: 01/09/2018] [Indexed: 05/29/2023]
Abstract
Trimethylamine N-oxide (TMAO) is a diet and gut microbiota-derived metabolite that has been linked to cardiovascular disease risk in human studies and animal models. TMAO levels show wide inter and intra individual variability in humans that can likely be accounted for by multiple factors including diet, the gut microbiota, levels of the TMAO generating liver enzyme Flavin-containing monooxygenase 3 (FMO3) and kidney function. We recently found that dioxin-like (DL) environmental pollutants increased FMO3 expression to elevate circulating diet-derived TMAO in mice, suggesting that exposure to this class of pollutants might also contribute to inter-individual variability in circulating TMAO levels in humans. To begin to explore this possibility we examined the relationship between body burden of DL pollutants (reported by serum lipid concentrations) and serum TMAO levels (n = 340) in the Anniston, AL cohort, which was highly exposed to polychlorinated biphenyls (PCBs). TMAO concentrations in archived serum samples from the Anniston Community Health Survey (ACHS-II) were measured, and associations of TMAO with 28 indices of pollutant body burden, including total dioxins toxic equivalent (TEQ), were quantified. Twenty-three (22 after adjustment for multiple comparisons) of the 28 indices were significantly positively associated with TMAO. Although the design of ACHS-II does not enable quantitative assessment of the contributions of previously known determinants of TMAO variability to this relationship, limited multivariate modeling revealed that total dioxins TEQ was significantly associated with TMAO among females (except at high BMIs) but not among males. Our results from this cross-sectional study indicate that exposure to DL pollutants may contribute to elevated serum TMAO levels. Prospective longitudinal studies will be required to assess the joint relationship between DL pollutant exposures, other determinants of TMAO, and health outcomes.
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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
- Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, Lexington, KY 40536
| | - Richard Charnigo
- Department of Biostatistics, College of Public Health, University of Kentucky, Lexington, KY
| | - Manjula Sunkara
- Superfund Research Center, University of Kentucky, Lexington, KY 40536
- Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, Lexington, KY 40536
| | - Sony Soman
- Superfund Research Center, University of Kentucky, Lexington, KY 40536
- Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, Lexington, KY 40536
| | - Marian Pavuk
- CDC Agency for Toxic Substances and Disease Registry, Atlanta, GA, USA
| | | | - 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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25
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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. Rev Environ 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] [What about the content of this article? (0)] [Affiliation(s)] [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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26
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Hennig B, Hagmeyer L, Brathe K, Ladage D, Randerath WJ, Frank K. Der Composite Physiologic Index als Prädiktor einer eingeschränkten Rechtsherzfunktion bei Idiopathischer Pulmonaler Fibrose. Pneumologie 2018. [DOI: 10.1055/s-0037-1619322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- B Hennig
- Sektion Pneumologie, Herzzentrum, Uniklinik Köln
| | - L Hagmeyer
- Klinik für Pneumologie und Allergologie, Zentrum für Schlaf- und Beatmungsmedizin, Krankenhaus Bethanien gGmbH, Solingen
| | - K Brathe
- Klinik III für Innere Medizin, Sektion Pneumologie, Herzzentrum der Universität zu Köln
| | - D Ladage
- Sektion Pneumologie, Herzzentrum, Uniklinik Köln
| | - WJ Randerath
- Klinik für Pneumologie und Allergologie, Zentrum für Schlaf- und Beatmungsmedizin, Krankenhaus Bethanien gGmbH, Solingen
| | - K Frank
- Sektion Pneumologie, Herzzentrum, Uniklinik Köln
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27
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Brathe K, Hennig B, Ladage D, Frank K. Charakterisierung potentieller inflammatorischer und immunologischer Biomarker bei aktiver und inaktiver Sarkoidose. Pneumologie 2018. [DOI: 10.1055/s-0037-1619186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- K Brathe
- Sektion Pneumologie, Klinik III für Innere Medizin, Herzzentrum der Universität zu Köln
| | - B Hennig
- Sektion Pneumologie, Klinik III für Innere Medizin, Herzzentrum der Universität zu Köln
| | - D Ladage
- Sektion Pneumologie, Klinik III für Innere Medizin, Herzzentrum der Universität zu Köln
| | - K Frank
- Sektion Pneumologie, Klinik III für Innere Medizin, Herzzentrum der Universität zu Köln
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28
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Brathe K, Hennig B, Ladage D, Frank K. Der Einfluss von Corticosteroidtherapie auf das Profil inflammatorischer und immunologischer serologischer Marker bei Sarkoidose. Pneumologie 2018. [DOI: 10.1055/s-0037-1619187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- K Brathe
- Sektion Pneumologie, Klinik III für Innere Medizin, Herzzentrum der Universität zu Köln
| | - B Hennig
- Sektion Pneumologie, Klinik III für Innere Medizin, Herzzentrum der Universität zu Köln
| | - D Ladage
- Sektion Pneumologie, Klinik III für Innere Medizin, Herzzentrum der Universität zu Köln
| | - K Frank
- Sektion Pneumologie, Klinik III für Innere Medizin, Herzzentrum der Universität zu Köln
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29
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Hoffman JB, Hennig B. Protective influence of healthful nutrition on mechanisms of environmental pollutant toxicity and disease risks. Ann N Y Acad Sci 2017; 1398:99-107. [PMID: 28574588 DOI: 10.1111/nyas.13365] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 03/29/2017] [Accepted: 04/06/2017] [Indexed: 12/21/2022]
Abstract
Human exposures to environmental contaminants around the world contribute to the global burden of disease and thus require urgent attention. Exploring preventive measures against environmental exposure and disease risk is essential. While a sedentary lifestyle and/or poor dietary habits can exacerbate the deleterious effects resulting from exposure to toxic chemicals, much emerging evidence suggests that positive lifestyle changes (e.g., healthful nutrition) can modulate and/or reduce the toxicity of environmental pollutants. Our work has shown that diets high in anti-inflammatory bioactive food components (e.g., phytochemicals or polyphenols) are possible strategies for modulating and reducing the disease risks associated with exposure to toxic pollutants in the environment. Thus, consuming healthy diets rich in plant-derived bioactive nutrients may reduce the vulnerability to diseases linked to environmental toxic insults. This nutritional paradigm in environmental toxicology requires further study in order to improve our understanding of the relationships between nutrition and other lifestyle modifications and toxicant-induced diseases.
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Affiliation(s)
- Jessie B Hoffman
- Superfund Research Center, University of Kentucky, Lexington, Kentucky.,Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, Kentucky
| | - Bernhard Hennig
- Superfund Research Center, University of Kentucky, Lexington, Kentucky.,Department of Animal and Food Sciences, College of Agriculture, Food and Environment, University of Kentucky, Lexington, Kentucky
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30
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Petriello MC, Hoffman JB, Morris AJ, Hennig B. Emerging roles of xenobiotic detoxification enzymes in metabolic diseases. Rev Environ 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] [What about the content of this article? (0)] [Affiliation(s)] [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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31
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Hoffman JB, Petriello MC, Hennig B. Impact of nutrition on pollutant toxicity: an update with new insights into epigenetic regulation. Rev Environ 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] [What about the content of this article? (0)] [Affiliation(s)] [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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32
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Perkins JT, Petriello MC, Xu L, Stromberg A, Hennig B. An open-sourced statistical application for identifying complex toxicological interactions of environmental pollutants. Rev Environ Health 2017; 32:23-26. [PMID: 28118146 PMCID: PMC5489228 DOI: 10.1515/reveh-2016-0044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 09/23/2016] [Indexed: 06/06/2023]
Abstract
The rising number of chemicals that humans are exposed to on a daily basis, as well as advances in biomonitoring and detection technologies have highlighted the diversity of individual exposure profiles (complex body burdens). To address this, the toxicological sciences have begun to shift away from examining toxic agents or stressors individually to focusing on more complex models with multiple agents or stressors present. Literature on interactions between chemicals is fairly limited in comparison with dose-response studies on individual toxicants, which is largely due to experimental and statistical challenges. Experimental designs capable of identifying these complex interactions are often avoided or not evaluated to their fullest potential because of the difficulty associated with appropriate analysis as well as logistical factors. To assist with statistical analysis of these types of experiments, an online, open-sourced statistical application was created for investigators to use to analyze and interpret potential toxicant interactions in laboratory experimental data using a full-factorial three-way analysis of variance (ANOVA). This model utilizes backward selection on interaction terms to model main effects and interactions.
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Affiliation(s)
- Jordan T Perkins
- Superfund Research Center, University of Kentucky, Lexington, KY, USA 40536-0200
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY, USA 40536
| | - Michael C. Petriello
- Superfund Research Center, University of Kentucky, Lexington, KY, USA 40536-0200
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY, USA 40536
| | - Li Xu
- Department of Statistics, University of Kentucky, Lexington, KY 40506
| | - Arnold Stromberg
- Superfund Research Center, University of Kentucky, Lexington, KY, USA 40536-0200
- Department of Statistics, University of Kentucky, Lexington, KY 40506
| | - Bernhard Hennig
- Superfund Research Center, University of Kentucky, Lexington, KY, USA 40536-0200
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY, USA 40536
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33
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Hennig B. Environmental challenges in Central and Eastern Europe. Rev Environ Health 2017; 32:1. [PMID: 28222040 PMCID: PMC5555221 DOI: 10.1515/reveh-2017-0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- 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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34
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Wahlang B, Perkins JT, Petriello MC, Hoffman JB, Stromberg AJ, Hennig B. A compromised liver alters polychlorinated biphenyl-mediated toxicity. Toxicology 2017; 380:11-22. [PMID: 28163111 DOI: 10.1016/j.tox.2017.02.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 01/10/2017] [Accepted: 02/01/2017] [Indexed: 12/17/2022]
Abstract
Exposure to environmental toxicants namely polychlorinated biphenyls (PCBs) is correlated with multiple health disorders including liver and cardiovascular diseases. The liver is important for both xenobiotic and endobiotic metabolism. However, the responses of an injured liver to subsequent environmental insults has not been investigated. The current study aims to evaluate the role of a compromised liver in PCB-induced toxicity and define the implications on overall body homeostasis. Male C57Bl/6 mice were fed either an amino acid control diet (CD) or a methionine-choline deficient diet (MCD) during the 12-week study. Mice were subsequently exposed to either PCB126 (4.9mg/kg) or the PCB mixture, Arcolor1260 (20mg/kg) and analyzed for inflammatory, calorimetry and metabolic parameters. Consistent with the literature, MCD diet-fed mice demonstrated steatosis, indicative of a compromised liver. Mice fed the MCD-diet and subsequently exposed to PCB126 showed observable wasting syndrome leading to mortality. PCB126 and Aroclor1260 exposure worsened hepatic fibrosis exhibited by the MCD groups. Interestingly, PCB126 but not Aroclor1260 induced steatosis and inflammation in CD-fed mice. Mice with liver injury and subsequently exposed to PCBs also manifested metabolic disturbances due to alterations in hepatic gene expression. Furthermore, PCB exposure in MCD-fed mice led to extra-hepatic toxicity such as upregulated circulating inflammatory biomarkers, implicating endothelial cell dysfunction. Taken together, these results indicate that environmental pollution can exacerbate toxicity caused by diet-induced liver injury which may be partially due to dysfunctional energy homeostasis. This is relevant to PCB-exposed human cohorts who suffer from alcohol or diet-induced fatty liver diseases.
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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
| | - Jordan T Perkins
- Superfund Research Center, 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
| | - Jessie B Hoffman
- Superfund Research Center, University of Kentucky, Lexington, KY, 40536, USA; Graduate Center for Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, KY 40536, USA
| | - Arnold J Stromberg
- Superfund Research Center, University of Kentucky, Lexington, KY, 40536, USA; 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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35
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Petriello M, Hoffman J, Sunkara M, Morris A, Hennig B. Plasma levels of the pro-atherogenic nutrient biomarker TMAO is increased by exposure to dioxin-like pollutants through upregulation of FMO3. Atherosclerosis 2016. [DOI: 10.1016/j.atherosclerosis.2016.07.150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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36
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Affiliation(s)
- Cetewayo Rashid
- Graduate Center for Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - Lindsay Carter
- Graduate Center for Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - Bernhard Hennig
- Graduate Center for Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - Kevin Pearson
- Graduate Center for Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, KY, USA
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37
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Hoffman JB, Petriello MC, Hennig B. Butyrate Modulates Cav‐1 and Its Binding Partner AhR, Leading to Differential Cyp1a1 and Cyp1b1 Gene Expression in Vascular Endothelial Cells. FASEB J 2016. [DOI: 10.1096/fasebj.30.1_supplement.1175.8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jessie B. Hoffman
- Pharmacology and Nutritional SciencesUniversity of KentuckyLexingtonKY
- UK Superfund Research CenterUniversity of KentuckyLexingtonKY
| | | | - Bernhard Hennig
- UK Superfund Research CenterUniversity of KentuckyLexingtonKY
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Petriello MC, Hoffman JB, Sunkara M, Wahlang B, Perkins JT, Morris AJ, Hennig B. Dioxin-like pollutants increase hepatic flavin containing monooxygenase (FMO3) expression to promote synthesis of the pro-atherogenic nutrient biomarker trimethylamine N-oxide from dietary precursors. J Nutr Biochem 2016; 33:145-53. [PMID: 27155921 DOI: 10.1016/j.jnutbio.2016.03.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 03/22/2016] [Accepted: 03/28/2016] [Indexed: 01/26/2023]
Abstract
The etiology of cardiovascular disease (CVD) is impacted by multiple modifiable and non-modifiable risk factors including dietary choices, genetic predisposition, and environmental exposures. However, mechanisms linking diet, exposure to pollutants, and CVD risk are largely unclear. Recent studies identified a strong link between plasma levels of nutrient-derived Trimethylamine N-oxide (TMAO) and coronary artery disease. Dietary precursors of TMAO include carnitine and phosphatidylcholine, which are abundant in animal-derived foods. Dioxin-like pollutants can upregulate a critical enzyme responsible for TMAO formation, hepatic flavin containing monooxygenase 3 (FMO3), but a link between dioxin-like PCBs, upregulation of FMO3, and increased TMAO has not been reported. Here, we show that mice exposed acutely to dioxin-like PCBs exhibit increased hepatic FMO3 mRNA, protein, as well as an increase in circulating levels of TMAO following oral administration of its metabolic precursors. C57BL/6 mice were exposed to 5μmol PCB 126/kg mouse weight (1.63mg/kg). At 48h post-PCB exposure, mice were subsequently given a single gavage of phosphatidylcholine dissolved in corn oil. Exposure to 5 μmole/kg PCB 126 resulted in greater than 100-fold increase in FMO3 mRNA expression, robust induction of FMO3 protein, and a 5-fold increase in TMAO levels compared with vehicle treated mice. We made similar observations in mice exposed to PCB 77 (49.6mg/kg twice); stable isotope tracer studies revealed increased formation of plasma TMAO from an orally administered precursor trimethylamine (TMA). Taken together, these observations suggest a novel diet-toxicant interaction that results in increased production of a circulating biomarker of cardiovascular disease risk.
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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, KY, USA
| | - Jessie B Hoffman
- Superfund Research Center, University of Kentucky, Lexington, KY, 40536; Graduate Center for Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, KY, 40536
| | - Manjula Sunkara
- Superfund Research Center, University of Kentucky, Lexington, KY, 40536; Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, Lexington, KY, 40536
| | - Banrida Wahlang
- 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
| | - Jordan T Perkins
- Superfund Research Center, University of Kentucky, Lexington, KY, 40536
| | - Andrew J Morris
- Superfund Research Center, University of Kentucky, Lexington, KY, 40536; Lexington Veterans Affairs Medical Center, Lexington, KY, 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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Müller S, Hennig B, Grönke S, Hunzelmann N, Frank K. Bedeutung der Lungenfunktion für die Progredienz der Lungenfibrose und Rechtsherzbelastung bei systemischer Sklerodermie. Pneumologie 2016. [DOI: 10.1055/s-0036-1572033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Perkins JT, Petriello MC, Newsome BJ, Hennig B. Polychlorinated biphenyls and links to cardiovascular disease. Environ Sci Pollut Res Int 2016; 23:2160-72. [PMID: 25877901 PMCID: PMC4609220 DOI: 10.1007/s11356-015-4479-6] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 03/31/2015] [Indexed: 05/19/2023]
Abstract
The pathology of cardiovascular disease is multi-faceted, with links to many modifiable and non-modifiable risk factors. Epidemiological evidence now implicates exposure to persistent organic pollutants, such as polychlorinated biphenyls (PCBs), with an increased risk of developing diabetes, hypertension, and obesity; all of which are clinically relevant to the onset and progression of cardiovascular disease. PCBs exert their cardiovascular toxicity either directly or indirectly via multiple mechanisms, which are highly dependent on the type and concentration of PCBs present. However, many PCBs may modulate cellular signaling pathways leading to common detrimental outcomes including induction of chronic oxidative stress, inflammation, and endocrine disruption. With the abundance of potential toxic pollutants increasing globally, it is critical to identify sensible means of decreasing associated disease risks. Emerging evidence now implicates a protective role of lifestyle modifications such as increased exercise and/or nutritional modulation via anti-inflammatory foods, which may help to decrease the vascular toxicity of PCBs. This review will outline the current state of knowledge linking coplanar and non-coplanar PCBs to cardiovascular disease and describe the possible molecular mechanism of this association.
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Affiliation(s)
- Jordan T Perkins
- Superfund Research Center, University of Kentucky, 900 S. Limestone Street, 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, 900 S. Limestone Street, Lexington, KY, 40536, USA
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, KY, 40536, USA
| | - Bradley J Newsome
- Superfund Research Center, University of Kentucky, 900 S. Limestone Street, Lexington, KY, 40536, USA
- Department of Animal and Food Sciences, College of Agriculture, Food, and Environment, University of Kentucky, Lexington, KY, 40536, USA
| | - Bernhard Hennig
- Superfund Research Center, University of Kentucky, 900 S. Limestone Street, 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 Toxicology, College of Medicine, University of Kentucky, Lexington, KY, 40536, USA.
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Murphy MO, Petriello MC, Han SG, Sunkara M, Morris AJ, Esser K, Hennig B. Exercise protects against PCB-induced inflammation and associated cardiovascular risk factors. Environ Sci Pollut Res Int 2016; 23:2201-11. [PMID: 25586614 PMCID: PMC4503535 DOI: 10.1007/s11356-014-4062-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 12/30/2014] [Indexed: 04/15/2023]
Abstract
Polychlorinated biphenyls (PCBs) are persistent environmental pollutants that contribute to the initiation of cardiovascular disease. Exercise has been shown to reduce the risk of cardiovascular disease; however, whether exercise can modulate PCB-induced vascular endothelial dysfunction and associated cardiovascular risk factors is unknown. We examined the effects of exercise on coplanar PCB-induced cardiovascular risk factors including oxidative stress, inflammation, impaired glucose tolerance, hypercholesteremia, and endothelium-dependent relaxation. Male ApoE(-/-) mice were divided into sedentary and exercise groups (voluntary wheel running) over a 12-week period. Half of each group was exposed to vehicle or PCB 77 at weeks 1, 2, 9, and 10. For ex vivo studies, male C57BL/6 mice exercised via voluntary wheel training for 5 weeks and then were administered with vehicle or PCB 77 24 h before vascular reactivity studies were performed. Exposure to coplanar PCB increased risk factors associated with cardiovascular disease, including oxidative stress and systemic inflammation, glucose intolerance, and hypercholesteremia. The 12-week exercise intervention significantly reduced these proatherogenic parameters. Exercise also upregulated antioxidant enzymes including phase II detoxification enzymes. Sedentary animals exposed to PCB 77 exhibited endothelial dysfunction as demonstrated by significant impairment of endothelium-dependent relaxation, which was prevented by exercise. Lifestyle modifications such as aerobic exercise could be utilized as a therapeutic approach for the prevention of adverse cardiovascular health effects induced by environmental pollutants such as PCBs.
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Affiliation(s)
- Margaret O Murphy
- Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, KY, 40536, USA
- University of Kentucky Superfund Research Center, University of Kentucky, 900 S. Limestone Street, Lexington, KY, 40536, USA
| | - Michael C Petriello
- University of Kentucky Superfund Research Center, University of Kentucky, 900 S. Limestone Street, Lexington, KY, 40536, USA
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, KY, 40536, USA
| | - Sung Gu Han
- University of Kentucky Superfund Research Center, University of Kentucky, 900 S. Limestone Street, Lexington, KY, 40536, USA
- Department of Food Science and Biotechnology of Animal Resources, College of Animal Bioscience and Technology, Konkuk University, Seoul, 143-701, Republic of Korea
| | - Manjula Sunkara
- University of Kentucky Superfund Research Center, University of Kentucky, 900 S. Limestone Street, Lexington, KY, 40536, USA
- Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, Lexington, KY, 40536, USA
| | - Andrew J Morris
- University of Kentucky Superfund Research Center, University of Kentucky, 900 S. Limestone Street, Lexington, KY, 40536, USA
- Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, Lexington, KY, 40536, USA
| | - Karyn Esser
- Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, 40536, USA
| | - Bernhard Hennig
- Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, KY, 40536, USA.
- University of Kentucky Superfund Research Center, University of Kentucky, 900 S. Limestone Street, Lexington, KY, 40536, USA.
- Department of Animal and Food Sciences, College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY, 40536, USA.
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Liu D, Perkins JT, Petriello MC, Hennig B. Exposure to coplanar PCBs induces endothelial cell inflammation through epigenetic regulation of NF-κB subunit p65. Toxicol Appl Pharmacol 2015; 289:457-65. [PMID: 26519613 DOI: 10.1016/j.taap.2015.10.015] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 10/23/2015] [Accepted: 10/26/2015] [Indexed: 02/04/2023]
Abstract
Epigenetic modifications of DNA and histones alter cellular phenotypes without changing genetic codes. Alterations of epigenetic marks can be induced by exposure to environmental pollutants and may contribute to associated disease risks. Here we test the hypothesis that endothelial cell dysfunction induced by exposure to polychlorinated biphenyls (PCBs) is mediated in part though histone modifications. In this study, human vascular endothelial cells were exposed to physiologically relevant concentrations of several PCBs congeners (e.g., PCBs 77, 118, 126 and 153) followed by quantification of inflammatory gene expression and changes of histone methylation. Only exposure to coplanar PCBs 77 and 126 induced the expression of histone H3K9 trimethyl demethylase jumonji domain-containing protein 2B (JMJD2B) and nuclear factor-kappa B (NF-κB) subunit p65, activated NF-κB signaling as evidenced by nuclear translocation of p65, and up-regulated p65 target inflammatory genes, such as interleukin (IL)-6, C-reactive protein (CRP), intercellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1), and IL-1α/β. The increased accumulation of JMJD2B in the p65 promoter led to a depletion of H3K9me3 repression mark, which accounts for the observed up-regulation of p65 and associated inflammatory genes. JMJD2B gene knockdown confirmed a critical role for this histone demethylase in mediating PCB-induced inflammation of the vascular endothelium. Finally, it was determined, via chemical inhibition, that PCB-induced up-regulation of JMJD2B was estrogen receptor-alpha (ER-α) dependent. These data suggest that coplanar PCBs may exert endothelial cell toxicity through changes in histone modifications.
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Affiliation(s)
- Dandan Liu
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, United States; Department of Animal and Food Sciences, College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY 40536, United States
| | - Jordan T Perkins
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, United States; Department of Animal and Food Sciences, College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY 40536, United States
| | - Michael C Petriello
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, United States; Graduate Center for Toxicology and Cancer Biology, College of Medicine, University of Kentucky, Lexington, KY 40536, United States
| | - Bernhard Hennig
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, United States; Department of Animal and Food Sciences, College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY 40536, United States.
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Liu D, Perkins JT, Hennig B. EGCG prevents PCB-126-induced endothelial cell inflammation via epigenetic modifications of NF-κB target genes in human endothelial cells. J Nutr Biochem 2015; 28:164-70. [PMID: 26878794 DOI: 10.1016/j.jnutbio.2015.10.003] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 10/19/2015] [Accepted: 10/22/2015] [Indexed: 12/25/2022]
Abstract
Anti-inflammatory polyphenols, such as epigallocatechin-3-gallate (EGCG), have been shown to protect against the toxicity of environmental pollutants. It is well known that bioactive food compounds such as polyphenols may exert their protection by modulating inflammatory pathways regulated through nuclear factor-kappa B (NF-κB) signaling. EGCG has been reported to inhibit NF-κB activation. We hypothesize that EGCG can protect against polychlorinated biphenyl (PCB)-induced endothelial inflammation in part through epigenetic regulation of NF-κB-regulated inflammatory genes. In order to test this hypothesis, human endothelial cells (EA.hy926) were exposed to physiologically relevant levels of coplanar PCB 126 and/or 15 or 30 μM of EGCG, followed by quantification of NF-κB subunit p65, histone acetyltransferase p300 and histone deacetylases (HDACs) accumulation through chromatin immunoprecipitation assay in the promoter region of inflammatory genes. In addition, the enrichment of the acetylated H3 was also quantified. PCB 126 exposure increased the expression of vascular inflammatory mediators, including interleukin (IL)-6, C-reactive protein, intercellular adhesion molecule-1, vascular cell adhesion molecule-1 and IL-1α/β, which were prevented by pretreatment with EGCG. This inhibitory effect by EGCG correlated with abolished nuclear import of p65, decreased chromatin binding of p65 and p300, as well as increased chromatin binding of HDAC 1/2. Furthermore, EGCG induced hypoacetylation of H3, which accounts for deactivation of downstream genes. These data suggest that EGCG-induced epigenetic modifications can decrease PCB-induced vascular toxicity.
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Affiliation(s)
- Dandan Liu
- 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
| | - Jordan T Perkins
- 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.
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Landrigan PJ, Wright RO, Cordero JF, Eaton DL, Goldstein BD, Hennig B, Maier RM, Ozonoff DM, Smith MT, Tukey RH. The NIEHS Superfund Research Program: 25 Years of Translational Research for Public Health. Environ Health Perspect 2015; 123:909-18. [PMID: 25978799 PMCID: PMC4590764 DOI: 10.1289/ehp.1409247] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 05/12/2015] [Indexed: 05/23/2023]
Abstract
BACKGROUND The Superfund Research Program (SRP) is an academically based, multidisciplinary, translational research program that for 25 years has sought scientific solutions to health and environmental problems associated with hazardous waste sites. SRP is coordinated by the National Institute of Environmental Health Sciences (NIEHS). It supports multi-project grants, undergraduate and postdoctoral training programs, individual research grants, and Small Business Innovation Research (SBIR) and Technology Transfer Research (STTR) grants. RESULTS SRP has had many successes: discovery of arsenic's toxicity to the developing human central nervous system; documentation of benzene toxicity to hematologic progenitor cells in human bone marrow; development of novel analytic techniques such as the luciferase expression assay and laser fragmentation fluorescence spectroscopy; demonstration that PCBs can cause developmental neurotoxicity at low levels and alter the genomic characteristics of sentinel animals; elucidation of the neurodevelopmental toxicity of organophosphate insecticides; documentation of links between antimicrobial agents and alterations in hormone response; discovery of biological mechanisms through which environmental chemicals may contribute to obesity, atherosclerosis, diabetes, and cancer; tracking the health and environmental effects of the attacks on the World Trade Center and Hurricane Katrina; and development of novel biological and engineering techniques to facilitate more efficient and lower-cost remediation of hazardous waste sites. CONCLUSION SRP must continue to address the legacy of hazardous waste in the United States, respond to new issues caused by rapid advances in technology, and train the next generation of leaders in environmental health science while recognizing that most of the world's worst toxic hot spots are now located in low- and middle-income countries.
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Wagner S, Wittekindt C, Reuschenbach M, Hennig B, Thevarajah M, Prigge ES, Knebel Doeberitz MV, Dreyer T, Bräuninger A, Gattenlöhner S, Klußmann J. 42 CD56-positive lymphocyte infiltration in correlation with outcome and human papilloma virus association of oropharyngeal squamous cell carcinoma. Oral Oncol 2015. [DOI: 10.1016/j.oraloncology.2015.02.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Hennig B, Müller S, Hochgreef T, Grönke S, Frank K. Zusammenhang zwischen Lungenfunktionsparametern und Rechtsherzbelastung bei idiopathischer Lungenfibrose – Falluntersuchung an 103 Patienten. Pneumologie 2015. [DOI: 10.1055/s-0035-1544836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Petriello MC, Newsome BJ, Dziubla TD, Hilt JZ, Bhattacharyya D, Hennig B. Modulation of persistent organic pollutant toxicity through nutritional intervention: emerging opportunities in biomedicine and environmental remediation. Sci Total Environ 2014; 491-492:11-6. [PMID: 24530186 PMCID: PMC4077968 DOI: 10.1016/j.scitotenv.2014.01.109] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 01/27/2014] [Accepted: 01/28/2014] [Indexed: 04/15/2023]
Abstract
Environmental pollution is increasing worldwide, and there is evidence that exposure to halogenated persistent organic pollutants (POPs) such as polychlorinated biphenyls can contribute to the pathology of inflammatory diseases such as atherosclerosis, diabetes, and cancer. Pollutant removal from contaminated sites and subsequent pollutant degradation are critical for reducing the long-term health risks associated with exposure. However, complete remediation of a toxicant from the environment is very difficult and cost-prohibitive. Furthermore, remediation technologies often result in the generation of secondary toxicants. Considering these circumstances, environmentally-friendly and sustainable remediation technologies and biomedical solutions to reduce vulnerability to environmental chemical insults need to be explored to reduce the overall health risks associated with exposure to environmental pollutants. We propose that positive lifestyle changes such as healthful nutrition and consumption of diets rich in fruits and vegetables or bioactive nutrients with antioxidant and/or anti-inflammatory properties will reduce the body's vulnerability to environmental stressors and thus reduce toxicant-mediated disease pathologies. Interestingly, emerging evidence now implicates the incorporation of bioactive nutrients, such as plant-derived polyphenols, in technologies focused on the capture, sensing and remediation of halogenated POPs. We propose that human nutritional intervention in concert with the use of natural polyphenol sensing and remediation platforms may provide a sensible means to develop primary and long-term prevention strategies of diseases associated with many environmental toxic insults including halogenated POPs.
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Affiliation(s)
- Michael C Petriello
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA; Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, KY 40536, USA
| | - Bradley J Newsome
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA; Department of Chemistry, College of Arts and Sciences, University of Kentucky, Lexington, KY 40506, USA
| | - Thomas D Dziubla
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA; Department of Chemical and Materials Engineering, College of Engineering, University of Kentucky, Lexington, KY 40506, USA
| | - J Zach Hilt
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA; Department of Chemical and Materials Engineering, College of Engineering, University of Kentucky, Lexington, KY 40506, USA
| | - Dibakar Bhattacharyya
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA; Department of Chemical and Materials Engineering, College of Engineering, University of Kentucky, Lexington, KY 40506, USA
| | - Bernhard Hennig
- Superfund Research Center, University of Kentucky, Lexington, KY 40536, USA; Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, KY 40536, USA; Department of Animal and Food Sciences, College of Agriculture Food and Environment, University of Kentucky, Lexington, KY 40546, USA
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Eske K, Newsome B, Han SG, Murphy M, Bhattacharyya D, Hennig B. PCB 77 dechlorination products modulate pro-inflammatory events in vascular endothelial cells. Environ Sci Pollut Res Int 2014; 21:6354-6364. [PMID: 23504249 PMCID: PMC3728165 DOI: 10.1007/s11356-013-1591-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Accepted: 02/20/2013] [Indexed: 05/29/2023]
Abstract
Persistent organic pollutants such as polychlorinated biphenyls (PCBs) are associated with detrimental health outcomes including cardiovascular diseases. Remediation of these compounds is a critical component of environmental policy. Although remediation efforts aim to completely remove toxicants, little is known about the effects of potential remediation byproducts. We previously published that Fe/Pd nanoparticles effectively dechlorinate PCB 77 to biphenyl, thus eliminating PCB-induced endothelial dysfunction using primary vascular endothelial cells. Herein, we analyzed the toxic effects of PCB congener mixtures (representative mixtures of commercial PCBs based on previous dechlorination data) produced at multiple time points during the dechlorination of PCB 77 to biphenyl. Compared with pure PCB 77, exposing endothelial cells to lower chlorinated PCB byproducts led to improved cellular viability, decreased superoxide production, and decreased nuclear factor kappa B activation based on duration of remediation. Presence of the parent compound, PCB 77, led to significant increases in mRNA and protein inflammatory marker expression. These data implicate that PCB dechlorination reduces biological toxicity to vascular endothelial cells.
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Affiliation(s)
- Katryn Eske
- University of Kentucky SRP Center, University of Kentucky, Lexington, KY 40536-0200, USA. Graduate Center for Nutritional Sciences, University of Kentucky, Kentucky SRP Center, Room 599, Wethington Building, 900 South Limestone Street, Lexington, KY 40536-0200, USA
| | - Bradley Newsome
- University of Kentucky SRP Center, University of Kentucky, Lexington, KY 40536-0200, USA. Department of Chemistry, University of Kentucky, Lexington, KY 40506-0055, USA
| | - Sung Gu Han
- University of Kentucky SRP Center, University of Kentucky, Lexington, KY 40536-0200, USA. Department of Food Science of Animal Resources, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - Margaret Murphy
- University of Kentucky SRP Center, University of Kentucky, Lexington, KY 40536-0200, USA. Graduate Center for Nutritional Sciences, University of Kentucky, Kentucky SRP Center, Room 599, Wethington Building, 900 South Limestone Street, Lexington, KY 40536-0200, USA
| | - Dibakar Bhattacharyya
- University of Kentucky SRP Center, University of Kentucky, Lexington, KY 40536-0200, USA. Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506-0046, USA
| | - Bernhard Hennig
- University of Kentucky SRP Center, University of Kentucky, Lexington, KY 40536-0200, USA
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Petriello MC, Newsome B, Hennig B. Influence of nutrition in PCB-induced vascular inflammation. Environ Sci Pollut Res Int 2014; 21:6410-8. [PMID: 23417440 PMCID: PMC3686851 DOI: 10.1007/s11356-013-1549-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Accepted: 02/04/2013] [Indexed: 04/15/2023]
Abstract
The nutritional profile of an individual can influence the toxicity of persistent environmental toxicants. Polychlorinated biphenyls (PCBs), prevalent environmental pollutants, are highly lipid-soluble toxic compounds that biomagnify through trophic levels and pose cancer, neurocognitive, and atherosclerotic risk to human populations. There is a growing body of knowledge that PCBs can initiate inflammatory responses in vivo, and this inflammation can be either exacerbated or ameliorated by nutrition. Data indicate that diets high in certain dietary lipids such as omega-6 fatty acids can worsen PCB-induced vascular toxicity while diets enriched with bioactive food components such as polyphenols and omega-3 polyunsaturated fatty acids can improve the toxicant-induced inflammation. There is evidence that bioactive nutrients protect through multiple cell signaling pathways, but we have shown that lipid raft caveolae and the antioxidant defense controller nuclear factor (erythroid-derived 2)-like 2 (Nrf2) both play a predominant role in nutritional modulation of PCB-induced vascular toxicity. Interestingly, there appears to be an intimate cross-talk between caveolae-related proteins and cellular Nrf2, and focusing on the use of specific bioactive food components that simultaneously alter both pathways may produce a more effective and efficient cytoprotective response to toxicant exposure. The use of nutrition as a protective tool is an economically beneficial means to address the toxicity of persistent environmental toxicants and may become a sensible means to protect human populations from PCB-induced vascular inflammation and associated chronic diseases.
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Affiliation(s)
- Michael C. Petriello
- Graduate Center for Toxicology, University of Kentucky, Lexington, KY 40536-0200
- University of Kentucky SRP Center, University of Kentucky, Lexington, KY 40536-0200
| | - Bradley Newsome
- Department of Chemistry, University of Kentucky, Lexington, KY 40506-0055
- University of Kentucky SRP Center, University of Kentucky, Lexington, KY 40536-0200
| | - Bernhard Hennig
- Graduate Center for Toxicology, University of Kentucky, Lexington, KY 40536-0200
- University of Kentucky SRP Center, University of Kentucky, Lexington, KY 40536-0200
- Corresponding author: Kentucky SRP Center, Room 599, Wethington Building, 900 South Limestone Street, University of Kentucky, Lexington, KY 40536-0200, USA. Phone: (859) 218-1343; Fax: (859) 257-1811;
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Petriello MC, Sunkara M, Hennig B, Morris A. Abstract 618: Novel High-Resolution Mass Spectroscopy Methodologies to Study Anti-inflammatory Nitro Fatty Acids. Arterioscler Thromb Vasc Biol 2014. [DOI: 10.1161/atvb.34.suppl_1.618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
It is widely hypothesized that the protective effects of certain polyunsaturated fatty acids involves the enzymatic or non-enzymatic conversion to biologically active metabolites. Accordingly, definitive identification and quantitation of bioactive fatty acid derivatives is essential for both evaluating the beneficial effects of these nutrients and identifying biological markers to monitor the therapeutic efficacy of fatty acid administration. Nitro-fatty acids are a class of fatty acid metabolites that are formed by chemical nitration of the double bonds of unsaturated fatty acids, and in mouse models, nitro-fatty acids decrease oxidative stress and inflammation suggesting that these could be biologically relevant mediators. However, due to inherent limitations of currently used analytical approaches for the detection and quantitation of free and esterified nitro-fatty acids, many questions remain to be elucidated regarding their abundance and clinical efficacy. Thus, we hypothesize that using an AMMP derivatization extraction procedure coupled with the use of HR electrospray ionization tandem mass spectrometry and stable isotope dilution will lead to a more accurate profile of nitro-fatty acids in biological samples. To accomplish this we generated methyl pyridinium derivatives of nitro-fatty acids which ionize strongly in positive mode resulting in increased sensitivity of more than 1000-fold over underivatized fatty acids monitored in negative ionization mode. We next developed methods for analysis of methyl pyridinium derivatives of nitro-fatty acids using an AB Sciex 5600 quadrupole TOF MS. Together, these methods allow us to identify the ions of the parent nitro-fatty acid derivative at high resolution and confirm their identities by other techniques such as mass defect and isotopomer ratio pattern analyses. To validate these methods, plasma was collected from C57BL/6 mice and levels of nitro-oleic acid were successfully determined using TOF product ions of 386.31 and 433.31 as key identifiers. In conclusion, we have developed and validated novel analytical methodologies to study nitro-fatty acids which may aide in advancing research of nitro-fatty acids as a therapeutic agent against inflammation and atherosclerosis.
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Affiliation(s)
| | - Manjula Sunkara
- Saha Cardiovascular Rsch Cntr, Univ of Kentucky, Lexington, KY
| | | | - Andrew Morris
- Saha Cardiovascular Rsch Cntr, Univ of Kentucky, Lexington, KY
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