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Horowitz RI, Fallon J, Freeman PR. Combining Double-Dose and High-Dose Pulsed Dapsone Combination Therapy for Chronic Lyme Disease/Post-Treatment Lyme Disease Syndrome and Co-Infections, Including Bartonella: A Report of 3 Cases and a Literature Review. Microorganisms 2024; 12:909. [PMID: 38792737 PMCID: PMC11124288 DOI: 10.3390/microorganisms12050909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 04/03/2024] [Accepted: 04/22/2024] [Indexed: 05/26/2024] Open
Abstract
Three patients with relapsing and remitting borreliosis, babesiosis, and bartonellosis, despite extended anti-infective therapy, were prescribed double-dose dapsone combination therapy (DDDCT) for 8 weeks, followed by one or several two-week courses of pulsed high-dose dapsone combination therapy (HDDCT). We discuss these patients' cases to illustrate three important variables required for long-term remission. First, diagnosing and treating active co-infections, including Babesia and Bartonella were important. Babesia required rotations of multiple anti-malarial drug combinations and herbal therapies, and Bartonella required one or several 6-day HDDCT pulses to achieve clinical remission. Second, all prior oral, intramuscular (IM), and/or intravenous (IV) antibiotics used for chronic Lyme disease (CLD)/post-treatment Lyme disease syndrome (PTLDS), irrespective of the length of administration, were inferior in efficacy to short-term pulsed biofilm/persister drug combination therapy i.e., dapsone, rifampin, methylene blue, and pyrazinamide, which improved resistant fatigue, pain, headaches, insomnia, and neuropsychiatric symptoms. Lastly, addressing multiple factors on the 16-point multiple systemic infectious disease syndrome (MSIDS) model was important in achieving remission. In conclusion, DDDCT with one or several 6-7-day pulses of HDDCT, while addressing abnormalities on the 16-point MSIDS map, could represent a novel effective clinical and anti-infective strategy in CLD/PTLDS and associated co-infections including Bartonella.
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Affiliation(s)
- Richard I. Horowitz
- New York State Department of Health Tick-Borne Working Group, Albany, NY 12224, USA
- Hudson Valley Healing Arts Center, Hyde Park, NY 12538, USA; (J.F.); (P.R.F.)
| | - John Fallon
- Hudson Valley Healing Arts Center, Hyde Park, NY 12538, USA; (J.F.); (P.R.F.)
| | - Phyllis R. Freeman
- Hudson Valley Healing Arts Center, Hyde Park, NY 12538, USA; (J.F.); (P.R.F.)
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2
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Abarikwu SO, Mgbudom-Okah CJ, Ndufeiya-Kumasi LC, Monye VE, Aruoren O, Ezim OE, Omeodu SI, Charles IA. Influence of triazines and lipopolysaccharide coexposure on inflammatory response and histopathological changes in the testis and liver of BalB/c mice. Heliyon 2024; 10:e24431. [PMID: 38293467 PMCID: PMC10826326 DOI: 10.1016/j.heliyon.2024.e24431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 02/01/2024] Open
Abstract
Background Triazines are environmental active chemicals that have been reported to alter the inflammatory status of the gonads. We tested the anti-inflammatory effect of the triazines (atrazine; ATZ, simazine; SMZ and cyanazine; CYZ) on the testis and compared it with the more classical liver model that has substantial populations of resident macrophages comparable to the testis. Methods BalB/c mice were treated with 25 mg/kg ATZ, SMZ and CYZ for 30 days and injected with lipopolysaccharide (0.5 mg/kg i.p.) 6 h before sacrifice. Myeloperoxidase activity and nitric oxide level in the testis and liver homogenates were determined by spectrophotometry whereas tumor necrosis factor-alpha and interleukin-6 concentrations were evaluated by immunoassay. Haematoxylin and eosin stained sections of the tissues were observed using a light microscope. Results Myeloperoxidase activity, nitric oxide, tumor necrosis factor-alpha, and interleukin-6 levels were decreased in the liver and testis of the triazines co-treated animals. SMZ has the most potent inhibitory effect and ATZ the least effect on inflammatory mediators in both tissues. Microscopic evaluation showed loss of inflammatory cells in the inter-tubular areas of the testis and few patchy masses of infiltrating inflammatory cells around the central vein of the liver. Conclusion Triazines inhibit the levels of inflammatory mediators in the testis and liver of mice. The anti-inflammatory effect of triazines in a lipopolysaccharide-induced inflammation model was established in this study.
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Affiliation(s)
- Sunny O. Abarikwu
- Department of Biochemistry, University of Port Harcourt, Choba, Nigeria
| | | | | | - Vivian E. Monye
- Department of Biochemistry, University of Port Harcourt, Choba, Nigeria
| | - Oke Aruoren
- Department of Biochemistry, University of Port Harcourt, Choba, Nigeria
| | - Ogechukwu E. Ezim
- Department of Biochemistry, University of Port Harcourt, Choba, Nigeria
| | - Stephen I. Omeodu
- Department of Biochemistry, University of Port Harcourt, Choba, Nigeria
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3
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Merrill SM, Letourneau N, Giesbrecht GF, Edwards K, MacIsaac JL, Martin JW, MacDonald AM, Kinniburgh DW, Kobor MS, Dewey D, England-Mason G, The APrON Study Team. Sex-Specific Associations between Prenatal Exposure to Di(2-ethylhexyl) Phthalate, Epigenetic Age Acceleration, and Susceptibility to Early Childhood Upper Respiratory Infections. EPIGENOMES 2024; 8:3. [PMID: 38390895 PMCID: PMC10885049 DOI: 10.3390/epigenomes8010003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/21/2024] [Accepted: 01/23/2024] [Indexed: 02/24/2024] Open
Abstract
Di(2-ethylhexyl) phthalate (DEHP) is a common plasticizer that can affect immune system development and susceptibility to infection. Aging processes (measured as epigenetic age acceleration (EAA)) may mediate the immune-related effects of prenatal exposure to DEHP. This study's objective was to examine associations between prenatal DEHP exposure, EAA at three months of age, and the number of upper respiratory infections (URIs) from 12 to 18 months of age using a sample of 69 maternal-child pairs from a Canadian pregnancy cohort. Blood DNA methylation data were generated using the Infinium HumanMethylation450 BeadChip; EAA was estimated using Horvath's pan-tissue clock. Robust regressions examined overall and sex-specific associations. Higher prenatal DEHP exposure (B = 6.52, 95% CI = 1.22, 11.81) and increased EAA (B = 2.98, 95% CI = 1.64, 4.32) independently predicted more URIs. In sex-specific analyses, some similar effects were noted for boys, and EAA mediated the association between prenatal DEHP exposure and URIs. In girls, higher prenatal DEHP exposure was associated with decreased EAA, and no mediation was noted. Higher prenatal DEHP exposure may be associated with increased susceptibility to early childhood URIs, particularly in boys, and aging biomarkers such as EAA may be a biological mechanism. Larger cohort studies examining the potential developmental immunotoxicity of phthalates are needed.
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Affiliation(s)
- Sarah M Merrill
- Department of Psychiatry and Human Behavior, The Warren Alpert Medical School at Brown University, Providence, RI 02903, USA
- Department of Medical Genetics, British Columbia Children's Hospital Research Institute, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
- Centre for Molecular Medicine and Therapeutics, Vancouver, BC V6H 0B3, Canada
| | - Nicole Letourneau
- Faculty of Nursing, University of Calgary, Calgary, AB T2N 1N4, Canada
- Department of Psychiatry, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
- Owerko Centre, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB T2N 1N4, Canada
- Hotchkiss Brain Institute, Calgary, AB T2N 4N1, Canada
| | - Gerald F Giesbrecht
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
- Owerko Centre, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB T2N 1N4, Canada
- Department of Psychology, Faculty of Arts, University of Calgary, Calgary, AB T2N 1N4, Canada
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Karlie Edwards
- Department of Medical Genetics, British Columbia Children's Hospital Research Institute, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
- Centre for Molecular Medicine and Therapeutics, Vancouver, BC V6H 0B3, Canada
| | - Julia L MacIsaac
- Department of Medical Genetics, British Columbia Children's Hospital Research Institute, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
- Centre for Molecular Medicine and Therapeutics, Vancouver, BC V6H 0B3, Canada
| | - Jonathan W Martin
- Science for Life Laboratory, Department of Environmental Science, Stockholm University, 106 91 Stockholm, Sweden
| | - Amy M MacDonald
- Alberta Centre for Toxicology, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - David W Kinniburgh
- Alberta Centre for Toxicology, University of Calgary, Calgary, AB T2N 1N4, Canada
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Michael S Kobor
- Department of Medical Genetics, British Columbia Children's Hospital Research Institute, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
- Centre for Molecular Medicine and Therapeutics, Vancouver, BC V6H 0B3, Canada
- Program in Child and Brain Development, Canadian Institute for Advanced Research, Toronto, ON M5G 1M1, Canada
| | - Deborah Dewey
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
- Owerko Centre, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB T2N 1N4, Canada
- Hotchkiss Brain Institute, Calgary, AB T2N 4N1, Canada
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Gillian England-Mason
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
- Owerko Centre, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - The APrON Study Team
- University of Calgary, Calgary, AB T2N 1N4, Canada
- University of Alberta, Edmonton, AB T6G 2R3, Canada
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4
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Arslan ME, Baba C, Tozlu OO. Boron Compounds Mitigate 2,3,7,8-Tetrachlorodibenzo-p-dioxin-Induced Toxicity in Human Peripheral Blood Mononuclear Cells. TOXICS 2024; 12:98. [PMID: 38393193 PMCID: PMC10891549 DOI: 10.3390/toxics12020098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 02/25/2024]
Abstract
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) stands as one of the most potent halogenated polycyclic hydrocarbons, known to inflict substantial cytotoxic effects on both animal and human tissues. Its widespread presence and recalcitrance make it an environmental and health concern. Efforts are being intensively channeled to uncover strategies that could mitigate the adverse health outcomes associated with TCDD exposure. In the realm of counteractive agents, boron compounds are emerging as potential candidates. These compounds, which have found applications in a spectrum of industries ranging from agriculture to pharmaceutical and cosmetic manufacturing, are known to modulate several cellular processes and enzymatic pathways. However, the dose-response relationships and protective potentials of commercially prevalent boron compounds, such as boric acid (BA), ulexite (UX), and borax (BX), have not been comprehensively studied. In our detailed investigation, when peripheral blood mononuclear cells (PBMCs) were subjected to TCDD exposure, they manifested significant cellular disruptions. This was evidenced by compromised membrane integrity, a marked reduction in antioxidant defense mechanisms, and a surge in the malondialdehyde (MDA) levels, a recognized marker for oxidative stress. On the genomic front, increased 8-OH-dG levels and chromosomal aberration (CA) frequency suggested that TCDD had the potential to cause DNA damage. Notably, our experiments have revealed that boron compounds could act as protective agents against these disruptions. They exhibited a pronounced ability to diminish the cytotoxic, genotoxic, and oxidative stress outcomes instigated by TCDD. Thus, our findings shed light on the promising role of boron compounds. In specific dosages, they may not only counteract the detrimental effects of TCDD but also serve as potential chemopreventive agents, safeguarding the cellular and genomic integrity of PBMCs.
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Affiliation(s)
- Mehmet Enes Arslan
- Department of Molecular Biology and Genetics, Faculty of Sciences, Erzurum Technical University, 25050 Erzurum, Turkey; (C.B.); (O.O.T.)
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5
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Bose R, Paul A, Dutta R, Hazra A, Pramanik A, Mandal Biswas S. Synthesis, antimicrobial, anticancer evaluation and molecular docking with Bax and MDM2 of dibromosterculic acid. Nat Prod Res 2023:1-8. [PMID: 38148119 DOI: 10.1080/14786419.2023.2294107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Accepted: 12/04/2023] [Indexed: 12/28/2023]
Abstract
Dibromosterculic acid [8-(1,2-dibromo-2-octylcyclopropyl)-octanoic acid], a new synthetic derivative was prepared by bromination of sterculic acid. This synthetic derivative showed strong fungicidal activity against two pathogenic fungal species namely Penicillium chrysogenum and Aspergillus niger with minimum inhibitory concentration (MIC) value of 0.007 mg/ml and good bactericidal activity against Bacillus subtilis and Xanthomonas sp. with MIC value of 0.015 mg/ml. Cytotoxic activity on both normal (MCF-10A) and cancerous (MDA-MB-468) cell lines revealed that the survivability percentage of normal cells was unaffected, whereas cancerous cells were decreased greatly by dibromosterculic acid with 50% survivability at 9 µg/ml concentration. Molecular-docking using AutoDock 4.2 with Bax exhibited strong pi-sigma interaction with PHE-93, pi-alkyl and alkyl interaction with TRP-139, ARG-89 and PHE-92 whereas MDM2 revealed strong hydrogen bond interaction with GLN-59 and pi-alkyl interaction with PHE-55. All experimental parameters suggested that this synthetic derivative would be valuable for target-specific drug development with nominal side effects.
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Affiliation(s)
- Rahul Bose
- Agricultural and Ecological Research Unit, Indian Statistical Institute, Kolkata, India
| | - Ayan Paul
- Agricultural and Ecological Research Unit, Indian Statistical Institute, Kolkata, India
| | - Rajashree Dutta
- Agricultural and Ecological Research Unit, Indian Statistical Institute, Kolkata, India
| | - Anjan Hazra
- Agricultural and Ecological Research Unit, Indian Statistical Institute, Kolkata, India
| | - Arindam Pramanik
- School of Medicine, University of Leeds, United Kingdom
- Amity Institute of Biotechnology, Amity University, Uttar Pradesh, India
| | - Suparna Mandal Biswas
- Agricultural and Ecological Research Unit, Indian Statistical Institute, Kolkata, India
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6
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Sun X, Anoopkumar AN, Aneesh EM, Madhavan A, Binod P, Kuddus M, Pandey A, Sindhu R, Awasthi MK. Hormesis-tempting stressors driven by evolutionary factors for mitigating negative impacts instigated over extended exposure to chemical elements. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 322:121246. [PMID: 36764380 DOI: 10.1016/j.envpol.2023.121246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/02/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
The adaptive responses to moderate environmental challenges by the biological systems have usually been credited to hormesis. Since the hormetic biphasic dose-response illustrates a prominent pattern towards biological responsiveness, the studies concerning such aspects will get much more significance in risk assessment practices and toxicological evaluation research. From this point of view, the past few epochs have witnessed the extending recognition of the notion concerning hormesis. The extraction of its basic foundations of evolutionary perspectives-along with the probable underlying molecular and cellular mechanisms followed by the practical implications to enhance the quality of life. To get better and more effective output in this regard, the present article has evaluated the various observations of previous investigations. The intent of integrating the novel inferences concerning the hormesis-tempting stressors driven by predominant evolutionary factors for mitigating the adverse impacts that were prompted over frequent and continuous exposure to the various chemical elements. Such inferences can offer extensive insight into the implications concerning the risk assessment of hormesis.
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Affiliation(s)
- Xinwei Sun
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712 100, China
| | - A N Anoopkumar
- Centre for Research in Emerging Tropical Diseases (CRET-D), Department of Zoology, University of Calicut, Malappuram, Kerala, India
| | - Embalil Mathachan Aneesh
- Centre for Research in Emerging Tropical Diseases (CRET-D), Department of Zoology, University of Calicut, Malappuram, Kerala, India
| | - Aravind Madhavan
- School of Biotechnology, Amrita Vishwa Vidyapeetham, Amritapuri, Kollam, 690525, Kerala, India
| | - Parameswaran Binod
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum, 695 019, Kerala, India
| | - Mohammed Kuddus
- Department of Biochemistry, University of Hail, Kingdom of Saudi Arabia
| | - Ashok Pandey
- Centre for Innovation and Translational Research, CSIR- Indian Institute for Toxicology Research (CSIR-IITR), 31 MG Marg, Lucknow, 226 001, India; Centre for Energy and Environmental Sustainability, Lucknow, 226 029, Uttar Pradesh, India; Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Dehradun, 248 007, India
| | - Raveendran Sindhu
- Department of Food Technology, TKM Institute of Technology, Kollam, 691 505, Kerala, India
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712 100, China.
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7
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Post CM, Myers JR, Winans B, Lawrence BP. Postnatal administration of S-adenosylmethionine restores developmental AHR activation-induced deficits in CD8+ T cell function during influenza A virus infection. Toxicol Sci 2023; 192:kfad019. [PMID: 36847456 PMCID: PMC10109536 DOI: 10.1093/toxsci/kfad019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023] Open
Abstract
Developmental exposures can influence life-long health; yet, counteracting negative consequences is challenging due to poor understanding of cellular mechanisms. The aryl hydrocarbon receptor (AHR) binds many small molecules, including numerous pollutants. Developmental exposure to the signature environmental AHR ligand 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) significantly dampens adaptive immune responses to influenza A virus (IAV) in adult offspring. CD8+ cytotoxic T lymphocytes (CTL) are crucial for successful infection resolution, which depends on the number generated and the complexity of their functionality. Prior studies showed developmental AHR activation significantly reduced the number of virus-specific CD8+ T cells, but impact on their functions is less clear. Other studies showed developmental exposure was associated with differences in DNA methylation in CD8+ T cells. Yet, empirical evidence that differences in DNA methylation are causally related to altered CD8+ T cell function is lacking. The two objectives were to ascertain whether developmental AHR activation affects CTL function, and whether differences in methylation contribute to reduced CD8+ T cell responses to infection. Developmental AHR triggering significantly reduced CTL polyfunctionality, and modified the transcriptional program of CD8+ T cells. S-adenosylmethionine (SAM), which increases DNA methylation, but not Zebularine, which diminishes DNA methylation, restored polyfunctionality and boosted the number of virus-specific CD8+ T cells. These findings suggest that diminished methylation, initiated by developmental exposure to an AHR-binding chemical, contributes to durable changes in antiviral CD8+ CTL functions later in life. Thus, deleterious consequence of development exposure to environmental chemicals are not permanently fixed, opening the door for interventional strategies to improve health.
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Affiliation(s)
- Christina M Post
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA
| | - Jason R Myers
- Genomics Research Center, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA
| | - Bethany Winans
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA
| | - B Paige Lawrence
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA
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8
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D'Addabbo P, Frezza D, Sulentic CE. Evolutive emergence and divergence of an Ig regulatory node: An environmental sensor getting cues from the aryl hydrocarbon receptor? Front Immunol 2023; 14:996119. [PMID: 36817426 PMCID: PMC9936319 DOI: 10.3389/fimmu.2023.996119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 01/18/2023] [Indexed: 02/05/2023] Open
Abstract
One gene, the immunoglobulin heavy chain (IgH) gene, is responsible for the expression of all the different antibody isotypes. Transcriptional regulation of the IgH gene is complex and involves several regulatory elements including a large element at the 3' end of the IgH gene locus (3'RR). Animal models have demonstrated an essential role of the 3'RR in the ability of B cells to express high affinity antibodies and to express different antibody classes. Additionally, environmental chemicals such as aryl hydrocarbon receptor (AhR) ligands modulate mouse 3'RR activity that mirrors the effects of these chemicals on antibody production and immunocompetence in mouse models. Although first discovered as a mediator of the toxicity induced by the high affinity ligand 2,3,7,8-tetracholordibenzo-p-dioxin (dioxin), understanding of the AhR has expanded to a physiological role in preserving homeostasis and maintaining immunocompetence. We posit that the AhR also plays a role in human antibody production and that the 3'RR is not only an IgH regulatory node but also an environmental sensor receiving signals through intrinsic and extrinsic pathways, including the AhR. This review will 1) highlight the emerging role of the AhR as a key transducer between environmental signals and altered immune function; 2) examine the current state of knowledge regarding IgH gene regulation and the role of the AhR in modulation of Ig production; 3) describe the evolution of the IgH gene that resulted in species and population differences; and 4) explore the evidence supporting the environmental sensing capacity of the 3'RR and the AhR as a transducer of these cues. This review will also underscore the need for studies focused on human models due to the premise that understanding genetic differences in the human population and the signaling pathways that converge at the 3'RR will provide valuable insight into individual sensitivities to environmental factors and antibody-mediated disease conditions, including emerging infections such as SARS-CoV-2.
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Affiliation(s)
- Pietro D'Addabbo
- Department of Biology, University of Bari “Aldo Moro”, Bari, Italy
| | - Domenico Frezza
- Department of Biology E. Calef, University of Rome Tor Vergata, Rome, Italy
| | - Courtney E.W. Sulentic
- Department of Pharmacology & Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, OH, United States
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9
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Mahfouz Y, Harmouche-Karaki M, Matta J, Mahfouz M, Salameh P, Younes H, Helou K, Finan R, Abi-Tayeh G, Meslimani M, Moussa G, Chahrour N, Osseiran C, Skaiky F, Narbonne JF. Serum levels of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans in a sample of Lebanese pregnant women: The role of dietary, anthropometric, and environmental factors. ENVIRONMENTAL RESEARCH 2023; 216:114647. [PMID: 36367504 DOI: 10.1016/j.envres.2022.114647] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/20/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) are unintentionally produced, toxic environmental chemicals that persist for long years and bioaccumulate along the food chain, contaminating humans through diet. A particularly critical population subgroup is pregnant women given the adverse health effects on fetuses and newborns. Several anthropogenic sources of exposure to PCDD/Fs exist in Lebanon. Therefore, the aim of the present cross-sectional study is to measure the levels of PCDD/Fs in a sample of pregnant women in Lebanon and to explore potential associated factors. In this study, we measured serum concentrations of seven dioxins and ten furans, among 423 pregnant women recruited at delivery, using gas chromatography MS/MS. Among 269 participants, maternal sociodemographic information was collected including vicinity to landfills, incineration, pesticide use, industrial activity, and smoking. Anthropometric data were registered regarding pre-pregnancy body mass index (BMI), pre-pregnancy weight loss from restrictive diet, and gestational weight gain. Intake of major food groups generally related to PCDD/Fs was reported (fish, red meat, poultry, and dairy). Bivariate and multivariate analyses were performed to identify associations. PCDD/Fs were detected in 0 to 56.1% of the sample. Geometric mean concentrations were 75.5 (2.35) pg/g lipid and 2.25 (1.39) TEQ2005 pg/g lipid for total dioxins, and 2.66 (1.76) pg/g lipid and 0.34 (1.78) TEQ2005 pg/g lipid for total furans. Levels were relatively lower than levels previously observed in France, Germany, Mexico, Ghana, and Japan. Red meat consumption was the most consistently associated factor with a 2.38-2.57 fold increase in PCDD/F levels. Pre-pregnancy weight loss showed inverse associations with PCDD/F congeners. Vicinity to illegal incineration was also associated with a 2.32-2.43 fold increase in PCDD/F levels. In conclusion, results showed the importance of dietary, anthropometric, and environmental factors in the present sample's exposure to PCDD/Fs, in a region that contains anthropogenic sources of contamination.
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Affiliation(s)
- Yara Mahfouz
- Department of Nutrition, Faculty of Pharmacy, Saint Joseph University of Beirut, Medical Sciences Campus, Damascus Road, P.O.B. 11-5076, Riad Solh Beirut 1107 2180, Lebanon.
| | - Mireille Harmouche-Karaki
- Department of Nutrition, Faculty of Pharmacy, Saint Joseph University of Beirut, Medical Sciences Campus, Damascus Road, P.O.B. 11-5076, Riad Solh Beirut 1107 2180, Lebanon.
| | - Joseph Matta
- Department of Nutrition, Faculty of Pharmacy, Saint Joseph University of Beirut, Medical Sciences Campus, Damascus Road, P.O.B. 11-5076, Riad Solh Beirut 1107 2180, Lebanon; Industrial Research Institute, Lebanese University Campus, Hadath Baabda, Lebanon.
| | - Maya Mahfouz
- Department of Nutrition, Faculty of Pharmacy, Saint Joseph University of Beirut, Medical Sciences Campus, Damascus Road, P.O.B. 11-5076, Riad Solh Beirut 1107 2180, Lebanon.
| | - Pascale Salameh
- Clinical and Epidemiological Research Laboratory, Faculty of Pharmacy, Lebanese University, Hadath, Lebanon; School of Medicine, Lebanese American University, Byblos, Lebanon; Institut National de Santé Publique d'Épidémiologie Clinique et de Toxicologie-Liban (INSPECT-LB), Lebanon; Department of Primary Care and Population Health, University of Nicosia Medical School, 2417, Nicosia, Cyprus.
| | - Hassan Younes
- UniLaSalle University, 19 Pierre Waguet Street, 60026 Beauvais, France.
| | - Khalil Helou
- Department of Nutrition, Faculty of Pharmacy, Saint Joseph University of Beirut, Medical Sciences Campus, Damascus Road, P.O.B. 11-5076, Riad Solh Beirut 1107 2180, Lebanon.
| | - Ramzi Finan
- Lebanese Society of Obstetrics and Gynecology, Adliye, Beit El- Tabib - 3rd Floor, Beirut, Lebanon; Faculty of Medicine, Saint Joseph University of Beirut, Medical Sciences Campus, Damascus Road, Beirut, Lebanon; Hotel-Dieu de France, Saint Joseph University of Beirut Hospital, Blvd Alfred Naccache, P.O.B. 166830, Beirut, Lebanon.
| | - Georges Abi-Tayeh
- Faculty of Medicine, Saint Joseph University of Beirut, Medical Sciences Campus, Damascus Road, Beirut, Lebanon; Hotel-Dieu de France, Saint Joseph University of Beirut Hospital, Blvd Alfred Naccache, P.O.B. 166830, Beirut, Lebanon; Lebanese Fertility Society, Adliye, Beit El- Tabib, Beirut, Lebanon.
| | | | - Ghada Moussa
- Department of Obstetrics and Gynecology, Chtoura Hospital, Zahle, Beqaa, Lebanon.
| | - Nada Chahrour
- Department of Obstetrics and Gynecology, SRH University Hospital, Nabatieh, Lebanon.
| | - Camille Osseiran
- Department of Obstetrics and Gynecology, Kassab Hospital, Saida, Lebanon.
| | - Farouk Skaiky
- Department of Molecular Biology, General Management, Al Karim Medical Laboratories, Saida, Lebanon; Faculty of Public Health, Lebanese University, Saida, Lebanon.
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10
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Keil-Stietz K, Lein PJ. Gene×environment interactions in autism spectrum disorders. Curr Top Dev Biol 2022; 152:221-284. [PMID: 36707213 PMCID: PMC10496028 DOI: 10.1016/bs.ctdb.2022.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
There is credible evidence that environmental factors influence individual risk and/or severity of autism spectrum disorders (hereafter referred to as autism). While it is likely that environmental chemicals contribute to the etiology of autism via multiple mechanisms, identifying specific environmental factors that confer risk for autism and understanding how they contribute to the etiology of autism has been challenging, in part because the influence of environmental chemicals likely varies depending on the genetic substrate of the exposed individual. Current research efforts are focused on elucidating the mechanisms by which environmental chemicals interact with autism genetic susceptibilities to adversely impact neurodevelopment. The goal is to not only generate insights regarding the pathophysiology of autism, but also inform the development of screening platforms to identify specific environmental factors and gene×environment (G×E) interactions that modify autism risk. Data from such studies are needed to support development of intervention strategies for mitigating the burden of this neurodevelopmental condition on individuals, their families and society. In this review, we discuss environmental chemicals identified as putative autism risk factors and proposed mechanisms by which G×E interactions influence autism risk and/or severity using polychlorinated biphenyls (PCBs) as an example.
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Affiliation(s)
- Kimberly Keil-Stietz
- Department of Comparative Biosciences, University of Wisconsin-Madison, School of Veterinary Medicine, Madison, WI, United States
| | - Pamela J Lein
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, CA, United States.
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11
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Rousseau M, Rouzeau C, Bainvel J, Pelé F. Domestic Exposure to Chemicals in Household Products, Building Materials, Decoration, and Pesticides: Guidelines for Interventions During the Perinatal Period from the French National College of Midwives. J Midwifery Womens Health 2022; 67 Suppl 1:S113-S134. [PMID: 36480667 DOI: 10.1111/jmwh.13426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 05/10/2022] [Indexed: 12/13/2022]
Abstract
INTRODUCTION We are exposed to numerous pollutants inside our homes. The perinatal period represents a particular window of vulnerability during which these exposures can have negative health effects over a more or less long term. The objective of this article is to formulate guidelines for health care professionals and intended for parents to reduce exposure to chemical pollutants at home, based on the scientific literature and already existing guidelines. METHODS We have followed the methodological procedures set forth by the French authority for health (HAS) to establish guidelines to limit exposure to pollutants in homes. This narrative review of the scientific literature was conducted with two principal objectives: (1) to identify priority substances emitted within homes and that have a reprotoxic potential and (2) to identify measures to limit exposure to these residential pollutants. The guidelines were developed from the data in the literature and from advice already made available by diverse institutions about environmental health during the perinatal period. RESULTS Domestic pollutants are numerous and come from both common (that is, shared, eg, painting, cleaning, and maintenance work) and specific (use of household pesticides) sources. Numerous pollutants are suspected or known to produce developmental toxicity, that is, to be toxic to children during developmental stages. Removing some products from the home, protecting the vulnerable (ie, pregnant women and young children) from exposure, and airing the home are among the preventive measures proposed to limit exposure to these chemical substances. CONCLUSION Health care professionals can provide advice to parents during the perinatal period to diminish exposure to household pollutants. The lack of interventional studies nonetheless limits the level of evidence for most of these recommendations.
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Affiliation(s)
- Mélie Rousseau
- Association pour la Prévention de la Pollution Atmosphérique (APPA), Loos, France
| | - Camille Rouzeau
- Département de médecine générale, Université de Rennes 1, Rennes, France
| | - Justine Bainvel
- Département de médecine générale, Université de Rennes 1, Rennes, France
| | - Fabienne Pelé
- Département de médecine générale, Université de Rennes 1, Rennes, France.,Université de Rennes, CHU Rennes, Inserm, CIC 1414 (Centre d'Investigation Clinique de Rennes), Rennes, F-35000, France
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12
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Delahoy MJ, Hubbard S, Mattioli M, Culquichicón C, Knee J, Brown J, Cabrera L, Barr DB, Ryan PB, Lescano AG, Gilman RH, Levy K. High Prevalence of Chemical and Microbiological Drinking Water Contaminants in Households with Infants Enrolled in a Birth Cohort-Piura, Peru, 2016. Am J Trop Med Hyg 2022; 107:881-892. [PMID: 35970283 PMCID: PMC9651523 DOI: 10.4269/ajtmh.22-0098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 06/06/2022] [Indexed: 11/07/2022] Open
Abstract
Chemical and microbiological drinking water contaminants pose risks to child health but are not often evaluated concurrently. At two consecutive visits to 96 households in Piura, Peru, we collected drinking water samples, administered health and exposure questionnaires, and collected infant stool samples. Standard methods were used to quantify heavy metals/metalloids, pesticides, and Escherichia coli concentrations in water samples. Stool samples were assayed for bacterial, viral, and parasitic enteropathogens. The primary drinking water source was indoor piped water for 70 of 96 households (73%); 36 households (38%) stored drinking water from the primary source in containers in the home. We found high prevalence of chemical and microbiological contaminants in household drinking water samples: arsenic was detected in 50% of 96 samples, ≥ 1 pesticide was detected in 65% of 92 samples, and E. coli was detected in 37% of 319 samples. Drinking water samples that had been stored in containers had higher odds of E. coli detection (adjusted odds ratio [aOR]: 4.50; 95% CI: 2.04-9.95) and pesticide detection (OR: 6.55; 95% CI: 2.05-21.0) compared with samples collected directly from a tap. Most infants (68%) had ≥ 1 enteropathogen detected in their stool. Higher odds of enteropathogen infection at the second visit were observed among infants from households where pesticides were detected in drinking water at the first visit (aOR: 2.93; 95% CI: 1.13-7.61). Results show concurrent risks of exposure to microbiological and chemical contaminants in drinking water in a low-income setting, despite high access to piped drinking water.
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Affiliation(s)
- Miranda J. Delahoy
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States
| | - Sydney Hubbard
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States
| | - Mia Mattioli
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States
| | - Carlos Culquichicón
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States
- Emerge, Emerging Diseases and Climate Change Research Unit, School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru
- School of Health Sciences, Universidad Nacional de Piura, Piura, Peru
| | - Jackie Knee
- Disease Control Department, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Joe Brown
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States
| | | | - Dana Boyd Barr
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States
| | - P. Barry Ryan
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States
| | - Andres G. Lescano
- Emerge, Emerging Diseases and Climate Change Research Unit, School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Robert H. Gilman
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States
| | - Karen Levy
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States
- Department of Environmental and Occupational Health Sciences, School of Public Health, University of Washington, Seattle, Washington, United States
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13
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Sánchez CA, Penrose MT, Kessler MK, Becker DJ, McKeown A, Hannappel M, Boyd V, Camus MS, Padgett-Stewart T, Hunt BE, Graves AF, Peel AJ, Westcott DA, Rainwater TR, Chumchal MM, Cobb GP, Altizer S, Plowright RK, Boardman WSJ. Land use, season, and parasitism predict metal concentrations in Australian flying fox fur. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 841:156699. [PMID: 35710009 DOI: 10.1016/j.scitotenv.2022.156699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 05/19/2022] [Accepted: 06/10/2022] [Indexed: 06/15/2023]
Abstract
Urban-living wildlife can be exposed to metal contaminants dispersed into the environment through industrial, residential, and agricultural applications. Metal exposure carries lethal and sublethal consequences for animals; in particular, heavy metals (e.g. arsenic, lead, mercury) can damage organs and act as carcinogens. Many bat species reside and forage in human-modified habitats and could be exposed to contaminants in air, water, and food. We quantified metal concentrations in fur samples from three flying fox species (Pteropus fruit bats) captured at eight sites in eastern Australia. For subsets of bats, we assessed ectoparasite burden, haemoparasite infection, and viral infection, and performed white blood cell differential counts. We examined relationships among metal concentrations, environmental predictors (season, land use surrounding capture site), and individual predictors (species, sex, age, body condition, parasitism, neutrophil:lymphocyte ratio). As expected, bats captured at sites with greater human impact had higher metal loads. At one site with seasonal sampling, bats had higher metal concentrations in winter than in summer, possibly owing to changes in food availability and foraging. Relationships between ectoparasites and metal concentrations were mixed, suggesting multiple causal mechanisms. There was no association between overall metal load and neutrophil:lymphocyte ratio, but mercury concentrations were positively correlated with this ratio, which is associated with stress in other vertebrate taxa. Comparison of our findings to those of previous flying fox studies revealed potentially harmful levels of several metals; in particular, endangered spectacled flying foxes (P. conspicillatus) exhibited high concentrations of cadmium and lead. Because some bats harbor pathogens transmissible to humans and animals, future research should explore interactions between metal exposure, immunity, and infection to assess consequences for bat and human health.
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Affiliation(s)
- Cecilia A Sánchez
- Odum School of Ecology, University of Georgia, Athens, GA, USA; Center for the Ecology of Infectious Diseases, University of Georgia, Athens, GA, USA.
| | - Michael T Penrose
- Department of Environmental Science, Baylor University, Waco, TX, USA
| | | | - Daniel J Becker
- Department of Biology, University of Oklahoma, Norman, OK, USA
| | | | | | - Victoria Boyd
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Health and Biosecurity Business Unit, The Australian Centre for Disease Preparedness (ACDP), Geelong, VIC, Australia
| | - Melinda S Camus
- Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - Ticha Padgett-Stewart
- Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT, USA
| | - Brooklin E Hunt
- Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT, USA
| | - Amelia F Graves
- Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT, USA
| | - Alison J Peel
- Centre for Planetary Health and Food Security, Griffith University, Nathan, QLD, Australia
| | | | - Thomas R Rainwater
- Tom Yawkey Wildlife Center and Belle W. Baruch Institute of Coastal Ecology and Forest Science, Clemson University, Georgetown, SC, USA
| | | | - George P Cobb
- Department of Environmental Science, Baylor University, Waco, TX, USA
| | - Sonia Altizer
- Odum School of Ecology, University of Georgia, Athens, GA, USA; Center for the Ecology of Infectious Diseases, University of Georgia, Athens, GA, USA
| | - Raina K Plowright
- Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT, USA
| | - Wayne S J Boardman
- School of Animal and Veterinary Sciences, University of Adelaide, SA, Australia
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14
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Germolec DR, Lebrec H, Anderson SE, Burleson GR, Cardenas A, Corsini E, Elmore SE, Kaplan BL, Lawrence BP, Lehmann GM, Maier CC, McHale CM, Myers LP, Pallardy M, Rooney AA, Zeise L, Zhang L, Smith MT. Consensus on the Key Characteristics of Immunotoxic Agents as a Basis for Hazard Identification. ENVIRONMENTAL HEALTH PERSPECTIVES 2022; 130:105001. [PMID: 36201310 PMCID: PMC9536493 DOI: 10.1289/ehp10800] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 08/09/2022] [Accepted: 08/26/2022] [Indexed: 05/04/2023]
Abstract
BACKGROUND Key characteristics (KCs), properties of agents or exposures that confer potential hazard, have been developed for carcinogens and other toxicant classes. KCs have been used in the systematic assessment of hazards and to identify assay and data gaps that limit screening and risk assessment. Many of the mechanisms through which pharmaceuticals and occupational or environmental agents modulate immune function are well recognized. Thus KCs could be identified for immunoactive substances and applied to improve hazard assessment of immunodulatory agents. OBJECTIVES The goal was to generate a consensus-based synthesis of scientific evidence describing the KCs of agents known to cause immunotoxicity and potential applications, such as assays to measure the KCs. METHODS A committee of 18 experts with diverse specialties identified 10 KCs of immunotoxic agents, namely, 1) covalently binds to proteins to form novel antigens, 2) affects antigen processing and presentation, 3) alters immune cell signaling, 4) alters immune cell proliferation, 5) modifies cellular differentiation, 6) alters immune cell-cell communication, 7) alters effector function of specific cell types, 8) alters immune cell trafficking, 9) alters cell death processes, and 10) breaks down immune tolerance. The group considered how these KCs could influence immune processes and contribute to hypersensitivity, inappropriate enhancement, immunosuppression, or autoimmunity. DISCUSSION KCs can be used to improve efforts to identify agents that cause immunotoxicity via one or more mechanisms, to develop better testing and biomarker approaches to evaluate immunotoxicity, and to enable a more comprehensive and mechanistic understanding of adverse effects of exposures on the immune system. https://doi.org/10.1289/EHP10800.
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Affiliation(s)
- Dori R. Germolec
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, North Carolina, USA
| | - Herve Lebrec
- Translational Safety & Bioanalytical Sciences, Amgen Research, South San Francisco, California, USA
| | - Stacey E. Anderson
- Allergy and Clinical Immunology Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, West Virginia, USA
| | - Gary R. Burleson
- Burleson Research Technologies, Inc., Morrisville, North Carolina, USA
| | - Andres Cardenas
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, Berkeley, California, USA
| | - Emanuela Corsini
- Laboratory of Toxicology, Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Sarah E. Elmore
- Office of Environmental Health Hazard Assessment, California Environmental Protection Agency, Oakland, California, USA
| | - Barbara L.F. Kaplan
- Department of Comparative Biomedical Sciences, Center for Environmental Health Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, Mississippi, USA
| | - B. Paige Lawrence
- Department of Environmental Medicine, University of Rochester School of Medicine & Dentistry, Rochester, New York, USA
- Department of Microbiology & Immunology, University of Rochester School of Medicine & Dentistry, Rochester, New York, USA
| | - Geniece M. Lehmann
- Center for Public Health and Environmental Assessment, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, USA
| | - Curtis C. Maier
- In Vitro In Vivo Translation, Research and Development, GlaxoSmithKline, Collegeville, Pennsylvania, USA
| | - Cliona M. McHale
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, Berkeley, California, USA
| | - L. Peyton Myers
- Division of Pharm/Tox, Office of Infectious Diseases, Office of New Drugs, Center for Drug Evaluation and Research, U.S. Federal Food and Drug Administration, Silver Spring, Maryland, USA
| | - Marc Pallardy
- Inserm, Inflammation microbiome immunosurveillance, Université Paris-Saclay, Châtenay-Malabry, France
| | - Andrew A. Rooney
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, North Carolina, USA
| | - Lauren Zeise
- Office of Environmental Health Hazard Assessment, California Environmental Protection Agency, Oakland, California, USA
| | - Luoping Zhang
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, Berkeley, California, USA
| | - Martyn T. Smith
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, Berkeley, California, USA
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15
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Banerjee O, Singh S, Prasad SK, Ray D, Banerjee M, Pal S, Kundu S, Maji BK, Mukherjee S. Dichlorophene activates aryl hydrocarbon receptor (AhR) and indoleamine 2, 3-dioxygenase 1 (IDO1) to mediate splenotoxicity in rat. Drug Chem Toxicol 2022; 45:2311-2318. [PMID: 34107835 DOI: 10.1080/01480545.2021.1935435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Dichlorophene (DCP) is a halogenated phenolic compound, widely used as fungicide, bactericide and antiprotozoan and also exhibit therapeutic application in several pathological conditions. Taking account of broad use of DCP, its possible effect on spleen (an important immune organ) was investigated in this study. Male albino rats were treated with graded doses of DCP (10%, 20% and 30% of LD50) and spleen and blood were obtained at 24, 48 and 72 hours post treatment. Oxidative stress parameters, proinflammatory cytokines and protein expression of aryl hydrocarbon receptor (AhR), indoleamine-2, 3-Dioxygenase 1 (IDO1) and nuclear factor erythroid 2-related factor 2 (Nrf2) were measured along with histopathological evaluation of spleen. In the present study, DCP perturbs redox status of splenocytes of rats as evidenced by excess ROS generation, lipid peroxidation and nitric oxide production simultaneously with reduction of antioxidant level [glutathione (GSH)] and inhibition of antioxidative enzymes [superoxide dismutase (SOD) and catalase (CAT)]. Two important proinflammatory cytokines, IL-6 and TNF-α were found to be elevated upon DCP treatment. Moreover, DCP also caused activation of AhR and IDO1 with simultaneous down regulation of Nrf2. All these effects of DCP were found to be dose and duration dependent. DCP also affects the spleen micro-architecture in the present study and these alterations were more prominent in high dose group at 72 hours post treatment. Taken together, all these results suggested that DCP induces oxidative stress and also increases proinflammatory cytokine levels to mount its toxic effect on spleen.
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Affiliation(s)
- Oly Banerjee
- Department of Physiology, Serampore College, Hooghly, India
| | | | | | - Dibyendu Ray
- Department of Physiology, Serampore College, Hooghly, India
| | | | - Swagata Pal
- Department of Physiology, Raja Peary Mohan College, Hooghly, India
| | - Sudipta Kundu
- Department of Physiology, Kalka Dental College, Meerut, India
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16
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Davies TC. The position of geochemical variables as causal co-factors of diseases of unknown aetiology. SN APPLIED SCIENCES 2022; 4:236. [PMID: 35909942 PMCID: PMC9326422 DOI: 10.1007/s42452-022-05113-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 07/06/2022] [Indexed: 11/28/2022] Open
Abstract
Abstract The term diseases of unknown aetiology (DUA) or idiopathic diseases is used to describe diseases that are of uncertain or unknown cause or origin. Among plausible geoenvironmental co-factors in causation of DUA, this article focusses on the entry of trace elements, including metals and metalloids into humans, and their involvement in humoral and cellular immune responses, representing potentially toxic agents with implications as co-factors for certain DUA. Several trace elements/metals/metalloids (micronutrients) play vital roles as co-factors for essential enzymes and antioxidant molecules, thus, conferring protection against disease. However, inborn errors of trace element/metal/metalloid metabolisms can occur to produce toxicity, such as when there are basic defects in the element transport mechanism. Ultimately, it is the amount of trace element, metal or metalloid that is taken up, its mode of accumulation in human tissues, and related geomedical attributes such as the chemical form and bioavailability that decisively determine whether the exerted effects are toxic or beneficial. Several case descriptions of DUA that are common worldwide are given to illustrate our knowledge so far of how trace element/metal/metalloid interactions in the immune system may engender its dysregulation and be implicated as causal co-factors of DUA. Article highlights The importance of a proper understanding of geochemical perturbations in human metabolisms is emphasisedIt is proferred that such an understanding would aid greatly in the decipherment of diseases of unknown aetiology (DUA)The thesis presented may pave the way towards better diagnosis and therapy of DUA.
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Affiliation(s)
- Theophilus C. Davies
- Present Address: Faculty of Natural Sciences, Mangosuthu University of Technology, 511 Mangosuthu Highway, 4031, KwaZulu Natal, South Africa
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17
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Chmielowiec J, Chmielowiec K, Strońska-Pluta A, Suchanecka A, Humińska-Lisowska K, Lachowicz M, Niewczas M, Białecka M, Śmiarowska M, Grzywacz A. Methylation in the Promoter Region of the Dopamine Transporter DAT1 Gene in People Addicted to Nicotine. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19148602. [PMID: 35886451 PMCID: PMC9321476 DOI: 10.3390/ijerph19148602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/30/2022] [Accepted: 07/12/2022] [Indexed: 01/27/2023]
Abstract
The dopaminergic system is a crucial element of the addiction processes. The dopamine transporter modulates the dynamics and levels of released dopamine in the synaptic cleft. Therefore, regulation of dopamine transporter (DAT1) gene expression is critical for maintaining homeostasis in the dopaminergic system. The aim of our study is evaluation of the methylation status of 33 CpG islands located in the DAT1 gene promoter region related to nicotine dependency. We investigated 142 nicotine-dependent subjects and 238 controls. Our results show that as many as 14 of the 33 CpG islands tested had statistically significantly higher methylation in the nicotine-dependent group compared to the control group. After applying Bonferroni correction, the total number of methylation sites was also significantly higher in the dependent subjects group. The analysis of the methylation status of particular CpG sites revealed a new direction of research regarding the biological aspects of nicotine addiction.
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Affiliation(s)
- Jolanta Chmielowiec
- Department of Hygiene and Epidemiology, Collegium Medicum, University of Zielona Góra, 65-046 Zielona Gora, Poland; (J.C.); (K.C.)
| | - Krzysztof Chmielowiec
- Department of Hygiene and Epidemiology, Collegium Medicum, University of Zielona Góra, 65-046 Zielona Gora, Poland; (J.C.); (K.C.)
| | - Aleksandra Strońska-Pluta
- Independent Laboratory of Health Promotion, Pomeranian Medical University in Szczecin, 70-204 Szczecin, Poland; (A.S.-P.); (A.S.)
| | - Aleksandra Suchanecka
- Independent Laboratory of Health Promotion, Pomeranian Medical University in Szczecin, 70-204 Szczecin, Poland; (A.S.-P.); (A.S.)
| | - Kinga Humińska-Lisowska
- Faculty of Physical Education, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland;
| | - Milena Lachowicz
- Department of Psychology, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland;
| | - Marta Niewczas
- Faculty of Physical Education, University of Rzeszow, 35-959 Rzeszow, Poland;
| | - Monika Białecka
- Department of Pharmacokinetics and Therapeutic Drug Monitoring, Pomeranian Medical University, 70-111 Szczecin, Poland; (M.B.); (M.Ś.)
| | - Małgorzata Śmiarowska
- Department of Pharmacokinetics and Therapeutic Drug Monitoring, Pomeranian Medical University, 70-111 Szczecin, Poland; (M.B.); (M.Ś.)
| | - Anna Grzywacz
- Independent Laboratory of Health Promotion, Pomeranian Medical University in Szczecin, 70-204 Szczecin, Poland; (A.S.-P.); (A.S.)
- Correspondence: ; Tel.: +48-91441-47-46
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18
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Sarah RH, Shariful Islam M, Zamiur Rahaman M, Afrin S, Rahman M, Saif-Ur-Rahman KM. Pivotal role of environmental toxicants on developing infectious diseases in LMICs: a protocol for a systematic review and meta-analysis. BMJ Open 2022; 12:e058927. [PMID: 35798518 PMCID: PMC9263937 DOI: 10.1136/bmjopen-2021-058927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Environmental toxicants such as chemical pollution have an enormous impact on the health of people and the planet. Emerging findings suggest that non-communicable diseases are linked to early and chronic environmental exposures. However, the rapid globalisation in developing countries, environmental change and the emergence, spread, persistence and severity of infectious diseases are not yet well understood. The aim of this study is to understand which environmental toxicants are commonly associated with infectious diseases in low-income and middle-income countries (LMICs). METHODS AND ANALYSIS A total of four electronic databases, MEDLINE through PubMed, Scopus, Web of Science and CENTRAL (the Cochrane Library) be searched to identify relevant studies and will be screened by two independent reviewers. The Cochrane risk of bias (ROB) tool for randomised control trials (RCTs) and ROB assessment tool for non-randomised studies for non-RCTs will be used to assess the ROB. A meta-analysis will be used to determine the pooled effect if we find out the included articles have similar environmental exposure, participant groups, study design and outcome measures. A narrative synthesis of the findings will be provided, along with summaries of the intervention effect. Heterogeneity between the studies will be assessed, and sensitivity analysis will be conducted based on study quality. ETHICS AND DISSEMINATION Findings will be summarised in a single manuscript. This review attempts to explore the pivotal role of environmental toxicants in predisposing, developing, persistent and severity of infectious diseases in LMICs. Findings from this study will highlight the effects of individual environmental toxicants' role on infectious disease outcomes for the early prevention and limit toxic exposure to guide individual, community, and occupational health policy for future strategies. PROSPERO REGISTRATION NUMBER CRD42021274359.
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Affiliation(s)
- Rehnuma Haque Sarah
- Environmental Interventions Unit, Infectious Diseases Division, icddr,b: International Centre for Diarrhoeal Disease Research, Mohakhali, Dhaka, Bangladesh
- School of Medicine, Stanford University, Stanford, California, USA
| | - Md Shariful Islam
- Environmental Interventions Unit, Infectious Diseases Division, icddr,b: International Centre for Diarrhoeal Disease Research, Mohakhali, Dhaka, Bangladesh
| | - Md Zamiur Rahaman
- Environmental Interventions Unit, Infectious Diseases Division, icddr,b: International Centre for Diarrhoeal Disease Research, Mohakhali, Dhaka, Bangladesh
| | - Sadia Afrin
- Health Systems and Population Studies Division, ICDDRB, Dhaka, Bangladesh
| | - Mahbubur Rahman
- Environmental Interventions Unit, Infectious Diseases Division, icddr,b: International Centre for Diarrhoeal Disease Research, Mohakhali, Dhaka, Bangladesh
| | - K M Saif-Ur-Rahman
- Health Systems and Population Studies Division, ICDDRB, Dhaka, Bangladesh
- College of Medicine, Nursing and Health Sciences, National University of Ireland, Galway, Ireland
- Evidence Synthesis Ireland and Cochrane Ireland, Galway, Ireland
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Marques-da-Silva D, Videira PA, Lagoa R. Registered human trials addressing environmental and occupational toxicant exposures: Scoping review of immunological markers and protective strategies. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2022; 93:103886. [PMID: 35598754 DOI: 10.1016/j.etap.2022.103886] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 05/11/2022] [Accepted: 05/15/2022] [Indexed: 06/15/2023]
Abstract
Exposure to pollution is a worldwide societal challenge participating in the etiology and progression of different diseases. However, the scarce information hinders our understanding of the actual level of human exposure and its specific effects. Inadequate and excessive immune responses underlie diverse chronic diseases. Yet, it is unclear which and how toxicant exposures affect the immune system functions. There is a multiplicity of immunological outcomes and biomarkers being studied in human trials related to exposure to different toxicants but still without clear evidence of their value as biomarkers of exposure or effect. The main aim of this study was to collect scientific evidence and identify relevant immunological biomarkers used at the clinical level for toxicant exposures. We used the platform clinical trials.gov as a database tool. First, we performed a search combining research items related to toxicants and immunological parameters. The resulting117 clinical trials were examined for immune-related outcomes and specific biomarkers evaluated in subjects exposed to occupational and environmental toxicants. After categorization, relevant immunological outcomes and biomarkers were identified related to systemic and airway inflammation, modulation of immune cells, allergy and autoimmunity. In general, the immune markers related to inflammation are more frequently investigated for exposure to pollutants, namely IL-6, C-reactive protein (CRP) and nitric oxide (NO). Nevertheless, the data also indicated that prospective biomarkers of effect are gaining ground and a guiding representation of the established and novel biomarkers is suggested for upcoming trials. Finally, potential protective strategies to mitigate the adverse effects of specific toxicants are underlined for future studies.
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Affiliation(s)
- Dorinda Marques-da-Silva
- School of Technology and Management, Polytechnic Institute of Leiria, Morro do Lena, Alto do Vieiro, 2411-901 Leiria, Portugal; LSRE-LCM - Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials, Escola Superior de Tecnologia e Gestão, Instituto Politécnico de Leiria, 2411-901 Leiria, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
| | - Paula Alexandra Videira
- UCIBIO - Applied Molecular Biosciences Unit, NOVA School of Science and Technology, NOVA University of Lisbon, 2819-516 Caparica, Portugal; Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, 2819-516 Caparica, Portugal
| | - Ricardo Lagoa
- School of Technology and Management, Polytechnic Institute of Leiria, Morro do Lena, Alto do Vieiro, 2411-901 Leiria, Portugal; UCIBIO - Applied Molecular Biosciences Unit, NOVA School of Science and Technology, NOVA University of Lisbon, 2819-516 Caparica, Portugal; Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, 2819-516 Caparica, Portugal
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Chen Y, Duan F, Liu L, Chen G, He Z, Huang H, Wang H. Sex differences and heritability of adrenal steroidogenesis in offspring rats induced by prenatal nicotine exposure. J Steroid Biochem Mol Biol 2022; 221:106102. [PMID: 35367371 DOI: 10.1016/j.jsbmb.2022.106102] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 03/24/2022] [Accepted: 03/28/2022] [Indexed: 12/28/2022]
Abstract
The epidemiological investigation has suggested prenatal nicotine exposure (PNE) induces multiorgan developmental toxicity and increases the risk of metabolic diseases in offspring. Our previous study found that the occurrence of fetal-originated diseases was associated with abnormal adrenal development in offspring. However, the long-term harmful effects on adrenal development in offspring induced by PNE remain unclear. Pregnant Wistar rats were injected subcutaneously with nicotine (2 mg/kg·d) from gestation day (GD) 9 to GD20 to obtain the adrenal gland from fetal and adult offspring rats of F1 and F2 generations. We found that the adrenal insulin-like growth factor 1 (IGF1) signaling pathway and steroidogenic function were increased in male while decreased in female of PNE fetal rats, which could extend into adulthood. Furthermore, the primary adrenal cells of fetal rats were treated with nicotine to observe the phenomena and clarify the possible mechanism of the sex difference. The results suggested that there are sex differences in IGF1 signaling pathway and steroidogenic function induced by PNE, which may be associated with sex differences in nAChRβ1 expression. In addition, the adrenal steroidogenic function was reduced in F2 offspring of F1 PNE female rats (regardless of mating with control or Male PNE rats). Therefore, the decrease of adrenal steroidogenic function in female offspring rats induced by PNE has maternal heritability. In conclusion, PNE could lead to sex differences and heritability of adrenal steroidogenic function in offspring rats.
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Affiliation(s)
- Yawen Chen
- Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan 430071, China
| | - Fangfang Duan
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China
| | - Lian Liu
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China; Department of Pharmacology, Medical College of Yangtze University, Jingzhou 434023, China
| | - Guanghui Chen
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China
| | - Zheng He
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China
| | - Hegui Huang
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China
| | - Hui Wang
- Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China.
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21
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Identifying Protein Features and Pathways Responsible for Toxicity Using Machine Learning and Tox21: Implications for Predictive Toxicology. Molecules 2022; 27:molecules27093021. [PMID: 35566372 PMCID: PMC9099959 DOI: 10.3390/molecules27093021] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/28/2022] [Accepted: 04/30/2022] [Indexed: 02/01/2023] Open
Abstract
Humans are exposed to numerous compounds daily, some of which have adverse effects on health. Computational approaches for modeling toxicological data in conjunction with machine learning algorithms have gained popularity over the last few years. Machine learning approaches have been used to predict toxicity-related biological activities using chemical structure descriptors. However, toxicity-related proteomic features have not been fully investigated. In this study, we construct a computational pipeline using machine learning models for predicting the most important protein features responsible for the toxicity of compounds taken from the Tox21 dataset that is implemented within the multiscale Computational Analysis of Novel Drug Opportunities (CANDO) therapeutic discovery platform. Tox21 is a highly imbalanced dataset consisting of twelve in vitro assays, seven from the nuclear receptor (NR) signaling pathway and five from the stress response (SR) pathway, for more than 10,000 compounds. For the machine learning model, we employed a random forest with the combination of Synthetic Minority Oversampling Technique (SMOTE) and the Edited Nearest Neighbor (ENN) method (SMOTE+ENN), which is a resampling method to balance the activity class distribution. Within the NR and SR pathways, the activity of the aryl hydrocarbon receptor (NR-AhR) and the mitochondrial membrane potential (SR-MMP) were two of the top-performing twelve toxicity endpoints with AUCROCs of 0.90 and 0.92, respectively. The top extracted features for evaluating compound toxicity were analyzed for enrichment to highlight the implicated biological pathways and proteins. We validated our enrichment results for the activity of the AhR using a thorough literature search. Our case study showed that the selected enriched pathways and proteins from our computational pipeline are not only correlated with AhR toxicity but also form a cascading upstream/downstream arrangement. Our work elucidates significant relationships between protein and compound interactions computed using CANDO and the associated biological pathways to which the proteins belong for twelve toxicity endpoints. This novel study uses machine learning not only to predict and understand toxicity but also elucidates therapeutic mechanisms at a proteomic level for a variety of toxicity endpoints.
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Akyeampong E, Bend JR, Luginaah I, Oscar Yawson D, Jerry Cobbina S, Ato Armah F, Osei Adu M, Kofi Essumang D, Iddi S, Botwe PK, Quansah R. Urinary Pesticide Residual Levels and Acute Respiratory Infections in Children Under 5 Years of Age: Findings From the Offinso North Farm Health Study. ENVIRONMENTAL HEALTH INSIGHTS 2022; 16:11786302221094418. [PMID: 35521362 PMCID: PMC9067049 DOI: 10.1177/11786302221094418] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 03/23/2022] [Indexed: 05/23/2023]
Abstract
BACKGROUND Several environmental factors are associated with the risk of acute lower respiratory infections (ALRIs) and upper respiratory infections (URIs) in children under 5 years of age (YOA). Evidence implicating chemical pesticides remains equivocal. There are also no data on this subject in these children in Ghana. This study investigated the association between urinary pesticide residual levels and the risk for ALRIs/URIs in children under 5 YOA. METHODS The participants for this study were from the Offinso North Farm Health Study, a population-based cross-sectional study. Two hundred and fifty four parents/guardians who had answered affirmatively to the question "Has your child ever accompanied you to the farm?" were interviewed on household socio-demographic and environmental factors, being breastfed, child education, age, gender, and respiratory infection. One hundred fifty children were randomly selected to provide the first void urine. RESULTS The proportion of children with ALRI was 22.1% and those with URI was 35.8%. We observed a statistically significant exposure-response relation of p,p'-DDE (tertile) with ALRI (1.7-3.2 µg/L urine: prevalence ratio [PR] = 1.22 [1.05-1.70], ⩾3.2 µg/L urine: 1.50 [1.07-3.53] [P-for trend = .0297]). This observation was in children older than two YOA (P-for trend = .0404). Delta-HCH and beta-HCH (2-levels) were significantly associated with ALRI but not URI. The risk of ALRI increased with deltamethrin levels in an exposure-response manner (2.5-9.5 µg/L urine: 2.10 [1.37-3.24], ⩾9.5 µg/L urine: 4.38 [1.87-10.32] [P-for trend = .0011]) and this was also observed in children older than two YOA. Similar observation was noted for URI. Bifenthrin (>0.5 µg/L urine) was positively associated with ALRI and URI whereas permethrin (⩾1.2 µg/L urine) was not associated only with URI. CONCLUSIONS The present study supports the hypothesis that exposure to chemical pesticides is associated with respiratory infections in children under 5 YOA.
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Affiliation(s)
- Enoch Akyeampong
- Biological, Environmental & Occupational Health Sciences, School of Public Health, University of Ghana, Legon, Accra, Ghana
| | - John R Bend
- Department of Pathology & Laboratory Medicine, Schulich School of Medicine & Dentistry, Western University, London, ON, Canada
| | - Isaac Luginaah
- Department of Geography, Western University, London, ON, Canada
| | - David Oscar Yawson
- Centre for Resource Management and Environmental Studies (CERMES), The University of the West Indies, Bridgetown, St. Michael, Barbados
| | - Samuel Jerry Cobbina
- Department of Ecotourism and Environmental Management, Faculty of Natural Resources and Environment, University for Development Studies, Nyankpala, Ghana
| | - Frederick Ato Armah
- Department of Environmental Science, School of Biological Sciences, College of Agriculture & Natural Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Michael Osei Adu
- Department of Crop Science, School of Agriculture, College of Agriculture & Natural Sciences, University of Cape Coast, Cape Coast, Ghana
| | - David Kofi Essumang
- Environmental Research Group, Department of Chemistry, School of Physical Sciences, University of Cape Coast, Ghana
| | - Samuel Iddi
- Department of Statistics and actuarial science, University of Ghana, Legon, Accra, Ghana
| | - Paul K Botwe
- Biological, Environmental & Occupational Health Sciences, School of Public Health, University of Ghana, Legon, Accra, Ghana
| | - Reginald Quansah
- Biological, Environmental & Occupational Health Sciences, School of Public Health, University of Ghana, Legon, Accra, Ghana
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Baek HS, Won HY, Kim JH, Ha EK, Jee HM, Shin YH, Kim MA, Han MY. Association of phthalate exposure and airway dysfunction with mediation by serum periostin. Pediatr Allergy Immunol 2021; 32:1681-1690. [PMID: 34291496 DOI: 10.1111/pai.13602] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 06/22/2021] [Accepted: 06/24/2021] [Indexed: 12/01/2022]
Abstract
BACKGROUND Phthalates can cause respiratory and immunological disorders. However, little is known about the role of serum periostin and YKL-40 levels in mediating the effects of phthalates. We investigated the mediating role of these biomarkers in the relationship between phthalates and airway dysfunction. METHODS A total of 487 children (aged 10-12 years old) were examined. Four high-molecular-weight phthalate (HMWP) [Σ4 HMWP] metabolites and 3 low-molecular-weight phthalate (LMWP) [Σ3 LMWP] metabolites in urine samples were measured. Serum periostin and YKL-40 levels were measured. Airway function was measured using impulse oscillometry. A mediation model was used to quantify the mediating effects of periostin and YKL-40 on airway dysfunction. RESULTS After adjustment for height, gender, BMI z-score, aeroallergen sensitization, secondary smoking, and vitamin D level, the level of urinary Σ3 LMWP metabolites was significantly associated with respiratory system resistance at 5 Hz (Rrs5; adjusted β: 0.020, 95% CI: 0.005-0.034; p = .010). The levels of urinary Σ4 HMWP and Σ3 LMWP metabolites were significantly associated with periostin level, but not with YKL-40 level. In addition, the periostin level was associated with Rrs5 (adjusted β: 0.048, 95% CI: 0.015-0.081; p = .005) and Rrs20-5 (adjusted β: 0.040, 95% CI: 0.011-0.069; p = .007). Serum periostin level had a significant effect in mediating the relationship between Σ3 LMWP and Rrs5 (13.9%, 95% CI: 10.7-77.0; p < .001). CONCLUSION Exposure to LMWPs was significantly associated with airway dysfunction, and this effect was partially attributable to increased serum periostin level.
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Affiliation(s)
- Hey Sung Baek
- Department of Pediatrics, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Ha Young Won
- Clinical Research Institute, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Ju Hee Kim
- Departments of Pediatrics, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Eun Kyo Ha
- Department of Pediatrics, Kangnam Sacred Heart Hospital, Hallym University Medical Center, Seoul, Korea
| | - Hye Mi Jee
- Departments of Pediatrics, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Youn Ho Shin
- Department of Pediatrics, CHA Gangnam Medical Center, CHA University School of Medicine, Seoul, Korea
| | - Mi-Ae Kim
- Department of Internal Medicine, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Man Yong Han
- Departments of Pediatrics, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
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24
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Avellaneda E, Lim A, Moeller S, Marquez J, Escalante Cobb P, Zambrano C, Patel A, Sanchez V, Godde K, Broussard C. HPTE-Induced Embryonic Thymocyte Death and Alteration of Differentiation Is Not Rescued by ERα or GPER Inhibition but Is Exacerbated by Concurrent TCR Signaling. Int J Mol Sci 2021; 22:ijms221810138. [PMID: 34576301 PMCID: PMC8471014 DOI: 10.3390/ijms221810138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 09/07/2021] [Accepted: 09/13/2021] [Indexed: 11/16/2022] Open
Abstract
Organochlorine pesticides, such as DDT, methoxychlor, and their metabolites, have been characterized as endocrine disrupting chemicals (EDCs); suggesting that their modes of action involve interaction with or abrogation of endogenous endocrine function. This study examined whether embryonic thymocyte death and alteration of differentiation induced by the primary metabolite of methoxychlor, HPTE, rely upon estrogen receptor binding and concurrent T cell receptor signaling. Estrogen receptor inhibition of ERα or GPER did not rescue embryonic thymocyte death induced by HPTE or the model estrogen diethylstilbestrol (DES). Moreover, adverse effects induced by HPTE or DES were worsened by concurrent TCR and CD2 differentiation signaling, compared with EDC exposure post-signaling. Together, these data suggest that HPTE- and DES-induced adverse effects on embryonic thymocytes do not rely solely on ER alpha or GPER but may require both. These results also provide evidence of a potential collaborative signaling mechanism between TCR and estrogen receptors to mediate adverse effects on embryonic thymocytes, as well as highlight a window of sensitivity that modulates EDC exposure severity.
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Affiliation(s)
- Eddie Avellaneda
- Department of Biology, University of La Verne, La Verne, CA 91750, USA; (E.A.); (A.L.); (S.M.); (J.M.); (P.E.C.); (A.P.); (V.S.)
| | - Atalie Lim
- Department of Biology, University of La Verne, La Verne, CA 91750, USA; (E.A.); (A.L.); (S.M.); (J.M.); (P.E.C.); (A.P.); (V.S.)
| | - Sara Moeller
- Department of Biology, University of La Verne, La Verne, CA 91750, USA; (E.A.); (A.L.); (S.M.); (J.M.); (P.E.C.); (A.P.); (V.S.)
| | - Jacqueline Marquez
- Department of Biology, University of La Verne, La Verne, CA 91750, USA; (E.A.); (A.L.); (S.M.); (J.M.); (P.E.C.); (A.P.); (V.S.)
| | - Priscilla Escalante Cobb
- Department of Biology, University of La Verne, La Verne, CA 91750, USA; (E.A.); (A.L.); (S.M.); (J.M.); (P.E.C.); (A.P.); (V.S.)
| | - Cristina Zambrano
- Department of Pharmacology, School of Medicine, University of California San Diego, La Jolla, CA 92093, USA;
| | - Aaditya Patel
- Department of Biology, University of La Verne, La Verne, CA 91750, USA; (E.A.); (A.L.); (S.M.); (J.M.); (P.E.C.); (A.P.); (V.S.)
| | - Victoria Sanchez
- Department of Biology, University of La Verne, La Verne, CA 91750, USA; (E.A.); (A.L.); (S.M.); (J.M.); (P.E.C.); (A.P.); (V.S.)
| | - K. Godde
- Department of Sociology/Anthropology, University of La Verne, La Verne, CA 91750, USA;
| | - Christine Broussard
- Department of Biology, University of La Verne, La Verne, CA 91750, USA; (E.A.); (A.L.); (S.M.); (J.M.); (P.E.C.); (A.P.); (V.S.)
- Correspondence:
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25
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Carrasco P, Estarlich M, Iñiguez C, Ferrero A, Murcia M, Esplugues A, Vioque J, Marina LS, Zabaleta C, Iriarte G, Fernández-Somoano A, Tardon A, Vrijheid M, Sunyer J, Ballester F, Llop S. Pre and postnatal exposure to mercury and respiratory health in preschool children from the Spanish INMA Birth Cohort Study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 782:146654. [PMID: 33838378 DOI: 10.1016/j.scitotenv.2021.146654] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 03/17/2021] [Accepted: 03/17/2021] [Indexed: 06/12/2023]
Abstract
Effects of mercury on maturing immune system have been reported, however the association with respiratory and allergy problems during infancy remains unclear. The aim of this study is to evaluate the association between pre and postnatal mercury exposure and respiratory and allergy problems among preschool children and to examine the role of potential modifying factors. Study subjects were children participant in Spanish Childhood and Environment Project (INMA, 2003-2008). We measured total mercury levels in cord blood (n = 1868) and hair at 4 years of age (n = 1347). Respiratory outcomes (wheezing, severe wheezing, chestiness, persistent cough, eczema and otitis) were obtained by questionnaires administered to parents. Associations were investigated by logistic regression adjusted for socio-demographic and lifestyle-related variables in each cohort and subsequent meta-analysis. We tested effect modification by factors related to individual susceptibility, diet and co-exposure with other pollutants. The geometric mean of cord blood and hair total mercury was 8.20 μg/L and 0.97 μg/g, respectively. No statistically significant association between pre or postnatal mercury exposure and respiratory and allergy outcomes was found. Notwithstanding, lower maternal intake of fruits and vegetables increased the risk of some respiratory outcomes due to the prenatal exposure to mercury (pint < 0.05). Moreover, an inverse association between prenatal mercury exposure and some respiratory outcomes was observed among children with higher maternal exposure to organocholorine compounds or smoking (pint < 0.05). Also, sex and postnatal smoking exposure modulated mercury postnatal effects on persistent cough (pint < 0.05). In conclusion, no association between pre and postnatal mercury exposure and respiratory and allergy problems among the whole population at study was found. However, diet and other toxicants could modulate this relation, especially during prenatal period. More research on this topic is warranted due to the limited evidence.
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Affiliation(s)
- Paula Carrasco
- Epidemiology and Environmental Health Joint Research Unit, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO-Public Health, FISABIO-Universitat Jaume I-Universitat de València, Av. Catalunya 21, 46020 Valencia, Spain; Department of Medicine, Universitat Jaume I, Avenida de Vicent Sos Baynat s/n, 12071 Castellón de la Plana, Spain
| | - Marisa Estarlich
- Epidemiology and Environmental Health Joint Research Unit, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO-Public Health, FISABIO-Universitat Jaume I-Universitat de València, Av. Catalunya 21, 46020 Valencia, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain; Nursing School, Universitat de València, C/Jaume Roig s/n, 46010, Valencia, Spain.
| | - Carmen Iñiguez
- Epidemiology and Environmental Health Joint Research Unit, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO-Public Health, FISABIO-Universitat Jaume I-Universitat de València, Av. Catalunya 21, 46020 Valencia, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain; Department of Statistics and Computational Research. Universitat de València, València, Dr. Moliner, 50 46100, Spain
| | - Amparo Ferrero
- Epidemiology and Environmental Health Joint Research Unit, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO-Public Health, FISABIO-Universitat Jaume I-Universitat de València, Av. Catalunya 21, 46020 Valencia, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain
| | - Mario Murcia
- Epidemiology and Environmental Health Joint Research Unit, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO-Public Health, FISABIO-Universitat Jaume I-Universitat de València, Av. Catalunya 21, 46020 Valencia, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain; Servicio de Análisis de Sistemas de Información Sanitaria, Conselleria de Sanitat, Generalitat Valenciana. C/Micer Mascó, 31-33, 46010, Valencia, Spain
| | - Ana Esplugues
- Epidemiology and Environmental Health Joint Research Unit, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO-Public Health, FISABIO-Universitat Jaume I-Universitat de València, Av. Catalunya 21, 46020 Valencia, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain; Nursing School, Universitat de València, C/Jaume Roig s/n, 46010, Valencia, Spain
| | - Jesús Vioque
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain; Institute for Health and Biomedical Research (ISABIAL), Avda Pinto Baeza, 12, 03010 AlicanteAlicante, Spain
| | - Loreto Santa Marina
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain; Health Department of Basque Government, Sub-directorate of Public Health of Gipuzkoa, Avenida de Navarra 4, 20013 San Sebastián, Spain; Biodonostia Health Research Institute, Group of Environmental Epidemiology and Child Development, Public Health Division of Gipuzkoa, Doctor Begiristain, s/n, 20014 San Sebastián, Spain
| | - Carlos Zabaleta
- Biodonostia Health Research Institute, Group of Environmental Epidemiology and Child Development, Public Health Division of Gipuzkoa, Doctor Begiristain, s/n, 20014 San Sebastián, Spain; Nuestra señora de la Antigua Hospital, OSI Goierri-Alto Urola, OSAKIDETZA-Basque Health Service, Barrio Argixao, s/n, 20700 Zumarraga, Spain
| | - Gorka Iriarte
- Laboratorio de Salud Pública de Alava, Santiago 11, 01002 Vitoria Gasteiz, Spain
| | - Ana Fernández-Somoano
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain; IUOPA-Departamento de Medicina, University of Oviedo, Av. Julián Clavería, 6, 33006 Oviedo, Spain; Institute of Health Research of the Principality of Asturias - Foundation for Biosanitary Research of Asturias (ISPA-FINBA), Avenida Hospital Universitario s/n, 33011, Oviedo, Spain
| | - Adonina Tardon
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain; IUOPA-Departamento de Medicina, University of Oviedo, Av. Julián Clavería, 6, 33006 Oviedo, Spain; Institute of Health Research of the Principality of Asturias - Foundation for Biosanitary Research of Asturias (ISPA-FINBA), Avenida Hospital Universitario s/n, 33011, Oviedo, Spain
| | - Martine Vrijheid
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain; Barcelona Institute for Global Health (ISGlobal), Dr. Aiguader 88, 08003 Barcelona, Spain; Universitat Pompeu Fabra (UPF), Plaça de la Mercè 10-12, 08002 Barcelona, Spain
| | - Jordi Sunyer
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain; Barcelona Institute for Global Health (ISGlobal), Dr. Aiguader 88, 08003 Barcelona, Spain; Universitat Pompeu Fabra (UPF), Plaça de la Mercè 10-12, 08002 Barcelona, Spain; Municipal Institute of Medical Research, IMIM-Hospital del Mar, Dr. Aiguader 88, 08003 Barcelona, Spain
| | - Ferran Ballester
- Epidemiology and Environmental Health Joint Research Unit, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO-Public Health, FISABIO-Universitat Jaume I-Universitat de València, Av. Catalunya 21, 46020 Valencia, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain; Nursing School, Universitat de València, C/Jaume Roig s/n, 46010, Valencia, Spain
| | - Sabrina Llop
- Epidemiology and Environmental Health Joint Research Unit, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO-Public Health, FISABIO-Universitat Jaume I-Universitat de València, Av. Catalunya 21, 46020 Valencia, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain
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Luthra-Guptasarma M, Guptasarma P. Does chronic inflammation cause acute inflammation to spiral into hyper-inflammation in a manner modulated by diet and the gut microbiome, in severe Covid-19? Bioessays 2021; 43:e2000211. [PMID: 34213801 DOI: 10.1002/bies.202000211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 06/16/2021] [Accepted: 06/17/2021] [Indexed: 12/14/2022]
Abstract
We propose that hyper-inflammation (HYPi) is a ''runaway'' consequence of acute inflammation (ACUi) that arises more easily (and also abates less easily) in those who host a pre-existing chronic inflammation (CHRi), because (i) most factors involved in generating an ACUi to limit viral proliferation are already present when there is an underlying CHRi, and also because (ii) anti-inflammatory (AI) mechanisms for the abatement of ACUi (following containment of viral proliferation) are suppressed and desensitized where there is an underlying CHRi, with this causing the ACUi to spiral into a HYPi. Stress, pollution, diet, and gut microbiomes (alterable in weeks through dietary changes) have an intimate and bidirectional cause-effect relationship with CHRi. We propose that avoidance of CHRi-promoting foods and adoption of CHRi-suppressing foods could reduce susceptibility to HYPi, in Covid-19 and in other viral diseases, such as influenza, which are characterized by episodic and unpredictable HYPi.
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Affiliation(s)
- Manni Luthra-Guptasarma
- Department of Immunopathology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Purnananda Guptasarma
- Centre for Protein Science, Design and Engineering, Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Mohali, SAS Nagar, Punjab, India
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Ismail A, Naeem I, Gong YY, Routledge MN, Akhtar S, Riaz M, Ramalho LNZ, de Oliveira CAF, Ismail Z. Early life exposure to dietary aflatoxins, health impact and control perspectives: A review. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.04.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Andrews FV, Smit E, Welch BM, Ahmed SM, Kile ML. Urinary polycyclic aromatic hydrocarbons concentrations and hepatitis B antibody serology in the United States (NHANES, 2003-2014). ENVIRONMENTAL RESEARCH 2021; 195:110801. [PMID: 33539830 PMCID: PMC8445163 DOI: 10.1016/j.envres.2021.110801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 01/12/2021] [Accepted: 01/21/2021] [Indexed: 05/04/2023]
Abstract
BACKGROUND Polycyclic aromatic hydrocarbons (PAHs) are environmental contaminants that are hepatotoxic and immunotoxic. PAH exposure may modulate hepatitis B immunology. OBJECTIVE We used data from 6 cycles of the National Health and Nutrition Examination Survey (2003-2014) to evaluate the associations between urinary PAH metabolites and hepatitis B serology. METHODS This analysis included individuals who self-reported receiving ≥3 doses of hepatitis B vaccine and urinary PAH metabolites (i.e. 1-napthol, 2-napthol, 3-fluorene, 2-fluorene, 1-phenanthrene, 1-pyrene, and total PAH [sum of all metabolites]). Separate logistic regression models assessed the association between hepatitis B vaccination status (i.e. individuals who were immune due to vaccination or susceptible) and tertiles of urinary PAH. Models were adjusted for age, gender, race/ethnicity, survey cycle, family income to poverty ratio, BMI, country of birth, serum cotinine, and urinary creatinine. RESULTS Among participants who reported receiving ≥3 doses of vaccine and had no antibodies indicating a history of hepatitis B infection and/or current hepatitis B infection, dose-response relationships were observed where individuals with the lowest odds of serology indicating a response to the hepatitis B vaccine (i.e., anti-HBs+, anti-HBc-, and HBsAg-) were in the highest tertile of 2-Napthol (adjusted Odds Ratio [aOR]: 0.70, 95% confidence interval [CI]: 0.54, 0.91), 3-Napthol (aOR: 0.68, 95% CI: 0.53, 0.87), 2-Fluorene (aOR: 0.61, 95% CI: 0.54, 0.86), 1-Phenanthrene (aOR: 0.79, 95% CI: 0.65, 0.97), 1-Pyrene (aOR): 0.68, 95% CI: 0.55, 0.83), and total PAH (aOR: 0.73, 95% CI: 0.56, 0.95) had the compared to the lowest tertile. CONCLUSION This cross-sectional study supports a hypothesis that PAH exposures experienced by the general US population may modulate hepatitis B vaccine induced immunity. Given the ubiquity of PAH exposures in the US, additional research is warranted to explore the effects of chronic PAH exposures on hepatitis B related humoral immunity.
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Affiliation(s)
- Faye V Andrews
- Oregon State University, College of Public Health and Human Sciences, Corvallis, OR, USA.
| | - Ellen Smit
- Oregon State University, College of Public Health and Human Sciences, Corvallis, OR, USA
| | - Barrett M Welch
- National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - Sharia M Ahmed
- University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Molly L Kile
- Oregon State University, College of Public Health and Human Sciences, Corvallis, OR, USA
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Li Q, Tan YQ, Cheung KK, Chiu-Leung LC, Leung LK. The mycoestrogen zeranol at high dosage antagonizes transient receptor potential channel activities in 3T3 L1 cells. Toxicol Lett 2021; 344:18-25. [PMID: 33689779 DOI: 10.1016/j.toxlet.2021.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 03/03/2021] [Accepted: 03/04/2021] [Indexed: 11/24/2022]
Abstract
Recent findings have revealed that exposure to environmental contaminants may result in obesity and pose a health threat to the general public. As the activity of transient receptor potential channels (TRPs) plays a permissive role in adipogenesis, the interactions between TRPs and some food pollutants, i.e. bisphenol A, di (2-ethylhexyl) phthalate, zearalenone, and zeranol at 10 μM were investigated in the present study. TRP-V1,-V3, -C4 and -C6 are reported to be differentially expressed in the adipocyte differentiation, and immunoblotting was performed to quantify changes in these TRPs affected by the pollutants. Our result indicated that the mycoestrogen zeranol or α-zearalanol suppressed the expression of the V1 and C6 isoforms. Subsequently, confocal microscopy was used to measure the calcium inflow repressed by zeranol from 0.1 μM to 10 μM. Oil Red O staining was used to determine the differentiation of 3T3 L1 preadipocytes. Zeranol could suppress the expression of TRP-V1 and -C6 protein and inhibit the associated flow of calcium into the cytosol of 3T3 L1 cells. Its IC50 value for inhibiting calcium inflow stimulated by 40 μM capsaicin or 10 μM GSK1702934A was estimated to be around 6 μM. Reduced TRP-V1 or -C6 activity might result in promoting adipogenesis. In conclusion, this study demonstrated that zeranol could potentiate fat cell differentiation through antagonizing TRP-V1 and -C6 activities.
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Affiliation(s)
- Qing Li
- Biochemistry Programme, School of Life Sciences, School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Yan Qin Tan
- Food and Nutritional Sciences Programme, School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Kam Kuen Cheung
- Food and Nutritional Sciences Programme, School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Leo C Chiu-Leung
- Marine Science, School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Lai K Leung
- Food and Nutritional Sciences Programme, School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong; Biochemistry Programme, School of Life Sciences, School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong.
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Infection threat shapes our social instincts. Behav Ecol Sociobiol 2021; 75:47. [PMID: 33583997 PMCID: PMC7873116 DOI: 10.1007/s00265-021-02975-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 01/05/2021] [Accepted: 01/11/2021] [Indexed: 02/07/2023]
Abstract
We social animals must balance the need to avoid infections with the need to interact with conspecifics. To that end we have evolved, alongside our physiological immune system, a suite of behaviors devised to deal with potentially contagious individuals. Focusing mostly on humans, the current review describes the design and biological innards of this behavioral immune system, laying out how infection threat shapes sociality and sociality shapes infection threat. The paper shows how the danger of contagion is detected and posted to the brain; how it affects individuals’ mate choice and sex life; why it strengthens ties within groups but severs those between them, leading to hostility toward anyone who looks, smells, or behaves unusually; and how it permeates the foundation of our moral and political views. This system was already in place when agriculture and animal domestication set off a massive increase in our population density, personal connections, and interaction with other species, amplifying enormously the spread of disease. Alas, pandemics such as COVID-19 not only are a disaster for public health, but, by rousing millions of behavioral immune systems, could prove a threat to harmonious cohabitation too.
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Brulport A, Lencina C, Chagnon MC, Le Corre L, Guzylack-Piriou L. Transgenerational effects on intestinal inflammation status in mice perinatally exposed to bisphenol S. CHEMOSPHERE 2021; 262:128009. [PMID: 33182144 DOI: 10.1016/j.chemosphere.2020.128009] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 08/03/2020] [Accepted: 08/12/2020] [Indexed: 06/11/2023]
Abstract
Increasing evidence has highlighted the critical role of early life environment in shaping the future health outcomes of individuals in subsequent generations. Bisphenol S (BPS) has been widely used as a substitute for various plastic materials due to the limited application of Bisphenol A (BPA) which is an endocrine disruptor. However, the lack of efficient evaluation of BPS leaves doubts about the relevant substitute of BPA. Few studies of transgenerational inheritance have examined the effects of environmental exposures to endocrine disruptors on the immune system. In this study, we analyzed the transgenerational effects of BPS on intestinal inflammation and its consequence in metabolism. In this study, only F0 pregnant mice were exposed to BPS (1.5 μg/kg bw/day) from gestational day 0 until weaning of offspring. In this work, both F1 and F2 male offspring developed an inflammatory response in the ileum and colon at adulthood after F0 mothers were exposed to BPS; this phenomenon disappeared in F3. This inflammatory response in F1 male offspring is associated with a significant decrease of blood cholesterol without modification of metabolic status. Further, in F3 offspring male, the decrease of gut inflammatory response is associated with a decrease of fat weight and with an increase of blood glucose and cholesterol level. A sex-specific profile is observed in female offspring. We also observed that early life exposure to BPS was associated with strong abnormal intestinal immune status. The study presented here demonstrates that the immune system, like other organ systems, is vulnerable to transgenerational effects caused by environmental exposures.
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Affiliation(s)
- Axelle Brulport
- Université de Bourgogne Franche-Comté, LNC UMR1231, 21000, Dijon, France; AgroSup, LNC UMR1231, 21000, Dijon, France; Nutrition Physiology and Toxicology Team (NUTox), INSERM, LNC UMR1231, 21000, Dijon, France
| | - Corinne Lencina
- Toxalim, Université de Toulouse, INRAE, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Marie-Christine Chagnon
- Université de Bourgogne Franche-Comté, LNC UMR1231, 21000, Dijon, France; AgroSup, LNC UMR1231, 21000, Dijon, France; Nutrition Physiology and Toxicology Team (NUTox), INSERM, LNC UMR1231, 21000, Dijon, France
| | - Ludovic Le Corre
- Université de Bourgogne Franche-Comté, LNC UMR1231, 21000, Dijon, France; AgroSup, LNC UMR1231, 21000, Dijon, France; Nutrition Physiology and Toxicology Team (NUTox), INSERM, LNC UMR1231, 21000, Dijon, France
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Olšarová K, Mishra GD. Early life factors for endometriosis: a systematic review. Hum Reprod Update 2020; 26:412-422. [PMID: 32141508 DOI: 10.1093/humupd/dmaa002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 12/29/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Despite its high prevalence and health burden, many aspects of endometriosis remain unclear, including risk factors and the underlying biological mechanisms. Exposures during early life, including in utero, are thought to play an important role in the subsequent onset of the condition. To date, however, much of the evidence from studies on early life exposures and diagnosed endometriosis appears mixed and difficult to assess. OBJECTIVE AND RATIONALE This study aims to provide a systematic review of the epidemiologic evidence on early life factors associated with the subsequent diagnosis of endometriosis. In utero and early life exposures have previously been linked to a range of adult health outcomes, including infertility. SEARCH METHODS A systematic review of case-control, cross-sectional and cohort studies was conducted using the search terms 'endometriosis'[MeSH] AND ('risk factors'[MeSH] OR 'protective factors'[MeSH]) AND ('in utero', 'fetal', 'neonatal, 'perinatal', 'developmental origins', 'early life', 'childhood' OR 'life course') in Embase, PubMed and Scopus databases. The review included articles published in English until 10 June 2018 with original data from studies with diagnosed endometriosis. The quality of primary studies was evaluated using the Newcastle-Ottawa Scale by both authors independently. Due to the degree of inconsistency in the measurements and study methods, a qualitative assessment of findings was undertaken rather than meta-analysis. OUTCOMES The search retrieved 70 records without duplicates that contained 20 records on human case-control, cross-sectional or cohort studies, from which 11 papers/studies were selected based on their assessment score. The majority of studies found that women born with low birthweight (<2.5 kg or <5.5 lb) were more likely to be diagnosed with endometriosis. For other early life factors, the evidence is mixed or limited, with further research needed on the association of endometriosis with preterm birth, in utero exposure to diethylstilbestrol and to maternal smoking, passive smoking in early life, and infant formula feeding (compared with breastfeeding). WIDER IMPLICATIONS While the weight of evidence points to low birthweight as a risk factor for diagnosis of endometriosis, future research is warranted on this and other key early life exposures where the findings are mixed to provide more robust evidence and for insights on potential causal pathways. Such research, however, needs to address current methodological issues, such as the use of prospective data from large population-based studies, better diagnostic methods to confirm disease free status, more consistent definitions of variables and consideration of potential biological mechanisms to guide the analyses. The improvements will advance the future synthesis of evidence to support clinically relevant risk assessment for a more timely diagnosis and treatment of endometriosis.
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Affiliation(s)
- Karolína Olšarová
- Faculty of Science, Charles University, Albertov 6, 128 43 Prague, Czech Republic
| | - Gita D Mishra
- School of Public Health, University of Queensland, 288 Herston Road, 4006 Herston, Queensland, Australia
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Exploring the multifocal role of phytochemicals as immunomodulators. Biomed Pharmacother 2020; 133:110959. [PMID: 33197758 DOI: 10.1016/j.biopha.2020.110959] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/12/2020] [Accepted: 10/27/2020] [Indexed: 02/07/2023] Open
Abstract
A well-functioning immune system of the host body plays pivotal role in the maintenance of ordinary physiological and immunological functions as well as internal environment. Balanced immunity enhances defense mechanism against infection, diseases and unwanted pathogens to avoid hypersensitivity reactions and immune related diseases. The ideal immune responses are the results of corrective interaction between the innate immune cells and acquired components of the immune system. Recently, the interest towards the immune system increased as significant target of toxicity due to exposure of chemicals, drugs and environmental pollutants. Numerous factors are involved in altering the immune responses of the host such as sex, age, stress, malnutrition, alcohol, genetic variability, life styles, environmental-pollutants and chemotherapy exposure. Immunomodulation is any modification of immune responses, often involved induction, amplification, attenuation or inhibition of immune responses. Several synthetic or traditional medicines are available in the market which promptly have many serious adverse effects and create pathogenic resistance. Phytochemicals are naturally occurring molecules, which significantly play an imperative role in modulating favorable immune responses. The present review emphasizes on the risk factors associated with alterations in immune responses, and immunomodulatory activity of phytochemicals specifically, glycosides, alkaloids, phenolic acids, flavonoids, saponins, tannins and sterols and sterolins.
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Parisi MG, Pirrera J, La Corte C, Dara M, Parrinello D, Cammarata M. Effects of organic mercury on Mytilus galloprovincialis hemocyte function and morphology. J Comp Physiol B 2020; 191:143-158. [PMID: 32979067 PMCID: PMC7819951 DOI: 10.1007/s00360-020-01306-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 06/26/2020] [Accepted: 09/09/2020] [Indexed: 01/01/2023]
Abstract
Abstract Filter-feeding organisms accumulate xenobiotics and other substances in their tissues. They can be useful as sentinel organisms in biomonitoring of the marine compartment. Bivalve cellular immunity is ensured by phagocytosis and cytotoxic reactions carried out by hemocytes in a network with humoral responses. These can be affected by chemical contaminants in water that can be immunosuppressors also at a low concentration increasing the sensibility to pathogens. This work is an attempt to individuate cellular markers for pollution detection, investigating the effect of methylmercury (CH3HgCl) at different concentrations on the activity and hemocyte morphology of the Mediterranean mussel, Mytilus galloprovincialis. We assessed the effect of three sub-lethal concentrations of the organometal on the cellular morphology, the efficacy of phagocytosis toward yeast cells, the alteration of the lysosomal membrane and the ability to release cytotoxic molecules. The results provide information on the alteration of hemocyte viability, modification of the morphological and cytoskeletal features and besides the cellular spreading, intrinsic ability of motile cells was used as a complementary investigation method. Exposure to the contaminant affected the percentage of phagocytosis and the phagocytosis index. Moreover, morphological and cytoskeleton alteration, caused by the pollutant, leads to reduced ability to incorporate the target and adhere to the substrate and the low ability of cells to retain neutral red could depend on the effects of methylmercury on membrane permeability. These results reinforce the use of the Mediterranean mussel as model for the evaluation of environmental quality in aquatic ecosystems integrating the novel information about hemocyte functions and morphology sensibility to organic mercury. Graphic abstract ![]()
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Affiliation(s)
- Maria Giovanna Parisi
- Marine Immunobiology Laboratory, Department of Earth and Marine Sciences, University of Palermo, Viale delle Scienze, Edificio 16, 90128, Palermo, Italy.
| | - Jessica Pirrera
- Marine Immunobiology Laboratory, Department of Earth and Marine Sciences, University of Palermo, Viale delle Scienze, Edificio 16, 90128, Palermo, Italy
| | - Claudia La Corte
- Marine Immunobiology Laboratory, Department of Earth and Marine Sciences, University of Palermo, Viale delle Scienze, Edificio 16, 90128, Palermo, Italy
| | - Mariano Dara
- Marine Immunobiology Laboratory, Department of Earth and Marine Sciences, University of Palermo, Viale delle Scienze, Edificio 16, 90128, Palermo, Italy
| | - Daniela Parrinello
- Marine Immunobiology Laboratory, Department of Earth and Marine Sciences, University of Palermo, Viale delle Scienze, Edificio 16, 90128, Palermo, Italy
| | - Matteo Cammarata
- Marine Immunobiology Laboratory, Department of Earth and Marine Sciences, University of Palermo, Viale delle Scienze, Edificio 16, 90128, Palermo, Italy
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Johanson SM, Swann JR, Umu ÖCO, Aleksandersen M, Müller MHB, Berntsen HF, Zimmer KE, Østby GC, Paulsen JE, Ropstad E. Maternal exposure to a human relevant mixture of persistent organic pollutants reduces colorectal carcinogenesis in A/J Min/+ mice. CHEMOSPHERE 2020; 252:126484. [PMID: 32199166 DOI: 10.1016/j.chemosphere.2020.126484] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 03/10/2020] [Accepted: 03/12/2020] [Indexed: 06/10/2023]
Abstract
An increased risk of developing colorectal cancer has been associated with exposure to persistent organic pollutants (POPs) and alteration in the gut bacterial community. However, there is limited understanding about the impact of maternal exposure to POPs on colorectal cancer and gut microbiota. This study characterized the influence of exposure to a human relevant mixture of POPs during gestation and lactation on colorectal cancer, intestinal metabolite composition and microbiota in the A/J Min/+ mouse model. Surprisingly, the maternal POP exposure decreased colonic tumor burden, as shown by light microscopy and histopathological evaluation, indicating a restriction of colorectal carcinogenesis. 1H nuclear magnetic resonance spectroscopy-based metabolomic analysis identified alterations in the metabolism of amino acids, lipids, glycerophospholipids and energy in intestinal tissue. In addition, 16S rRNA sequencing of gut microbiota indicated that maternal exposure modified fecal bacterial composition. In conclusion, the results showed that early-life exposure to a mixture of POPs reduced colorectal cancer initiation and promotion, possibly through modulation of the microbial and biochemical environment. Further studies should focus on the development of colorectal cancer after combined maternal and dietary exposures to environmentally relevant low-dose POP mixtures.
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Affiliation(s)
- Silje M Johanson
- Department of Production Animal Clinical Sciences, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway.
| | - Jonathan R Swann
- Department of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, SW7 2AZ, United Kingdom.
| | - Özgün C O Umu
- Department of Paraclinical Sciences, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway.
| | - Mona Aleksandersen
- Department of Preclinical Sciences and Pathology, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway.
| | - Mette H B Müller
- Department of Paraclinical Sciences, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway.
| | - Hanne F Berntsen
- Department of Production Animal Clinical Sciences, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway; National Institute of Occupational Health, P.O. Box 5330 Majorstuen, NO-0304, Oslo, Norway.
| | - Karin E Zimmer
- Department of Preclinical Sciences and Pathology, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway.
| | - Gunn C Østby
- Department of Production Animal Clinical Sciences, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway.
| | - Jan E Paulsen
- Department of Paraclinical Sciences, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway.
| | - Erik Ropstad
- Department of Production Animal Clinical Sciences, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway.
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Tsatsakis A, Petrakis D, Nikolouzakis TK, Docea AO, Calina D, Vinceti M, Goumenou M, Kostoff RN, Mamoulakis C, Aschner M, Hernández AF. COVID-19, an opportunity to reevaluate the correlation between long-term effects of anthropogenic pollutants on viral epidemic/pandemic events and prevalence. Food Chem Toxicol 2020; 141:111418. [PMID: 32437891 PMCID: PMC7211730 DOI: 10.1016/j.fct.2020.111418] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 05/02/2020] [Accepted: 05/05/2020] [Indexed: 02/07/2023]
Abstract
Occupational, residential, dietary and environmental exposures to mixtures of synthetic anthropogenic chemicals after World War II have a strong relationship with the increase of chronic diseases, health cost and environmental pollution. The link between environment and immunity is particularly intriguing as it is known that chemicals and drugs can cause immunotoxicity (e.g., allergies and autoimmune diseases). In this review, we emphasize the relationship between long-term exposure to xenobiotic mixtures and immune deficiency inherent to chronic diseases and epidemics/pandemics. We also address the immunotoxicologic risk of vulnerable groups, taking into account biochemical and biophysical properties of SARS-CoV-2 and its immunopathological implications. We particularly underline the common mechanisms by which xenobiotics and SARS-CoV-2 act at the cellular and molecular level. We discuss how long-term exposure to thousand chemicals in mixtures, mostly fossil fuel derivatives, exposure toparticle matters, metals, ultraviolet (UV)–B radiation, ionizing radiation and lifestyle contribute to immunodeficiency observed in the contemporary pandemic, such as COVID-19, and thus threaten global public health, human prosperity and achievements, and global economy. Finally, we propose metrics which are needed to address the diverse health effects of anthropogenic COVID-19 crisis at present and those required to prevent similar future pandemics. Developmental exposure to environmental factors can disrupt the immune system. Long-term low-dose exposure to chemical mixtures is linked to imunodeficiency Immunodeficiency contributes to chronic diseases and the current Covid-19 pandemics. Environmental chemicals and microorganisms share similar molecular pathomechanisms (AhR pathway). Understanding the underlying pathomechanisms helps to improve public health.
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Affiliation(s)
- Aristidis Tsatsakis
- Laboratory of Toxicology, Medical School, University of Crete, Voutes, 71409 Heraklion, Crete, Greece; Department of Analytical and Forensic Medical Toxicology, Sechenov University, 2-4 Bolshaya Pirogovskaya st., 119991 Moscow, Russia; Department of Molecular Pharmacology, Albert Einstein College of Medicine, New York, NY 10461, USA.
| | - Demetrious Petrakis
- Laboratory of Toxicology, Medical School, University of Crete, Voutes, 71409 Heraklion, Crete, Greece.
| | | | - Anca Oana Docea
- Department of Toxicology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania.
| | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania.
| | - Marco Vinceti
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, I-41125 Modena, Italy.
| | - Marina Goumenou
- Laboratory of Toxicology, Medical School, University of Crete, Voutes, 71409 Heraklion, Crete, Greece
| | - Ronald N Kostoff
- School of Public Policy, Georgia Institute of Technology, Gainesville, VA, 20155, USA.
| | - Charalampos Mamoulakis
- Department of Urology, University General Hospital of Heraklion, Medical School, University of Crete, 71003 Heraklion, Crete, Greece.
| | - Michael Aschner
- Department of Analytical and Forensic Medical Toxicology, Sechenov University, 2-4 Bolshaya Pirogovskaya st., 119991 Moscow, Russia; Department of Molecular Pharmacology, Albert Einstein College of Medicine, New York, NY 10461, USA.
| | - Antonio F Hernández
- Department of Legal Medicine and Toxicology, University of Granada School of Medicine, 180016 Granada, Spain.
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Viinikainen J, Bryson A, Böckerman P, Elovainio M, Hutri-Kähönen N, Juonala M, Lehtimäki T, Pahkala K, Rovio S, Pulkki-Råback L, Raitakari O, Pehkonen J. Do childhood infections affect labour market outcomes in adulthood and, if so, how? ECONOMICS AND HUMAN BIOLOGY 2020; 37:100857. [PMID: 32078928 DOI: 10.1016/j.ehb.2020.100857] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 01/24/2020] [Accepted: 01/29/2020] [Indexed: 06/10/2023]
Abstract
A burgeoning body of literature suggests that poor childhood health leads to adverse health outcomes, lower educational attainment and weaker labour market outcomes in adulthood. We focus on an important but under-researched topic, which is the role played by infection-related hospitalization (IRH) in childhood and its links to labour market outcomes later in life. The participants aged 24-30 years in 2001 N = 1706 were drawn from the Young Finns Study, which includes comprehensive registry data on IRHs in childhood at ages 0-18 years. These data are linked to longitudinal registry information on labour market outcomes (2001-2012) and parental background (1980). The estimations were performed using ordinary least squares (OLS). The results showed that having an additional IRH is associated with lower log earnings (b = -0.110, 95 % confidence interval (CI): -0.193; -0.026), fewer years of being employed (b = -0.018, 95 % CI: -0.031; -0.005), a higher probability of receiving any social income transfers (b = 0.012, 95 % CI: -0.002; 0.026) and larger social income transfers, conditional on receiving any (b = 0.085, 95 % CI: 0.025; 0.145). IRHs are negatively linked to human capital accumulation, which explains a considerable part of the observed associations between IRHs and labour market outcomes. We did not find support for the hypothesis that adult health mediates the link.
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Affiliation(s)
- Jutta Viinikainen
- Jyväskylä University School of Business and Economics, P.O.Box 35, FI-40014, Jyväskylä, Finland.
| | - Alex Bryson
- University College London, NIESR, London, United Kingdom and IZA, Bonn, Germany.
| | - Petri Böckerman
- Jyväskylä University School of Business and Economics, University of Jyväskylä, Jyväskylä, Finland; Labour Institute for Economic Research, Helsinki, Finland and IZA, Bonn, Germany.
| | - Marko Elovainio
- Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Helsinki, Finland and National Institute for Health and Welfare, Helsinki, Finland.
| | - Nina Hutri-Kähönen
- Department of Paediatrics, Tampere University Hospital, Tampere, Finland and Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
| | - Markus Juonala
- Department of Medicine, University of Turku, Turku, Finland, Division of Medicine, Turku University Hospital, Turku, Finland, Murdoch Children's Research Institute, Parkville, Victoria, Australia.
| | - Terho Lehtimäki
- Department of Clinical Chemistry, Fimlab Laboratories and Faculty of Medicine and Health Technology, Finnish Cardiovascular Research Center, Tampere University, Tampere, Finland.
| | - Katja Pahkala
- Research Centre for Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, Finland, Sports & Exercise Medicine Unit, Department of Physical Activity and Health, Paavo Nurmi Centre, Turku, Finland.
| | - Suvi Rovio
- Research Center of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, Finland.
| | - Laura Pulkki-Råback
- Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Helsinki,Finland.
| | - Olli Raitakari
- Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku and Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, Turku, Finland.
| | - Jaakko Pehkonen
- Jyväskylä University School of Business and Economics, University of Jyväskylä, Jyväskylä, Finland.
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Dai S, Chan KC. Associations of household environmental tobacco smoke exposure with respiratory symptoms and utilisation of medical services in healthy young children in Hong Kong. Tob Induc Dis 2020; 18:02. [PMID: 31966027 PMCID: PMC6964497 DOI: 10.18332/tid/114461] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 11/18/2019] [Accepted: 11/20/2019] [Indexed: 11/24/2022] Open
Abstract
INTRODUCTION Young children are especially vulnerable to environmental tobacco smoke (ETS) exposure. This study was carried out to determine whether household ETS exposure was associated with respiratory symptoms and medical service utilisation among Hong Kong healthy children in their first eighteen months of age. METHODS A secondary analysis was done on the data obtained from our previous cross-sectional territory-wide pneumococcal carriage surveillance study in Hong Kong in 2013–2014. All measures were reported by caregivers. Univariable and multivariable analyses were performed to examine the associations between ETS exposure and outcome measures. Covariates included children’s sex, age, body mass index z score, history of breastfeeding, gestational age at birth, birthweight, maternal age, living region, overcrowding of living area, household income, child care attendance, and presence of siblings. Additional adjustment for season and households’ respiratory symptoms were made to ascertain the association between ETS and children’s respiratory symptoms. RESULTS The analysis included 1541 children (mean age: 11.2 ± 6.4 months; males: 50.7%). Current household ETS exposure (AOR=1.30; 95% CI: 1.00– 1.66; p=0.050) and postnatal maternal smoking (AOR=2.21; 95% CI: 1.06–4.64; p=0.035) were independently and significantly associated with all-cause doctor consultation in the past 3 months. Children living with more than one household smoker were more likely to have all-cause doctor consultation compared with the non-exposed children (AOR=1.70; 95% CI: 1.04–2.77, p=0.028). Postnatal maternal smoking was associated with all-cause hospitalisation in the past 3 months (AOR=2.48; 95% CI: 1.05–5.86; p=0.039). Children living in a household, where the daily consumption by household smokers was more than 20 cigarettes, were more likely to have respiratory symptoms compared with non-exposed children (AOR=1.99; 95% CI: 1.12–3.52; p=0.016). CONCLUSIONS Household ETS exposure in young children was associated with respiratory symptoms and all-cause outpatient or inpatient medical service utilisation. The associations were potentially dose-dependent.
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Affiliation(s)
- Siyu Dai
- Department of Paediatrics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Kate C Chan
- Department of Paediatrics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
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Kearns J. Moving towards transformational WASH. THE LANCET GLOBAL HEALTH 2019; 7:e1493. [DOI: 10.1016/s2214-109x(19)30394-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Accepted: 08/12/2019] [Indexed: 12/20/2022] Open
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Post CM, Boule LA, Burke CG, O'Dell CT, Winans B, Lawrence BP. The Ancestral Environment Shapes Antiviral CD8 + T cell Responses across Generations. iScience 2019; 20:168-183. [PMID: 31569050 PMCID: PMC6817732 DOI: 10.1016/j.isci.2019.09.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 08/05/2019] [Accepted: 09/11/2019] [Indexed: 11/18/2022] Open
Abstract
Recent studies have linked health fates of children to environmental exposures of their great grandparents. However, few studies have considered whether ancestral exposures influence immune function across generations. Here, we report transgenerational inheritance of altered T cell responses resulting from maternal (F0) exposure to the aryl hydrocarbon receptor ligand 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). Since F0 exposure to TCDD has been linked to transgenerational transmission of reproductive problems, we asked whether maternal TCDD exposure also caused transgenerational changes in immune function. F0 exposure caused transgenerational effects on the CD8+ T cell response to influenza virus infection in females but not in males. Outcrosses showed changes were passed through both parental lineages. These data demonstrate that F0 exposure to an aryl hydrocarbon receptor (AHR) agonist causes durable changes to immune responses that can affect subsequent generations. This has broad implications for understanding how the environment of prior generations shapes susceptibility to pathogens and antiviral immunity in later generations.
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Affiliation(s)
- Christina M Post
- Department of Environmental Medicine, University of Rochester School of Medicine & Dentistry, Rochester, NY 14642, USA
| | - Lisbeth A Boule
- Department of Environmental Medicine, University of Rochester School of Medicine & Dentistry, Rochester, NY 14642, USA; Department of Microbiology & Immunology, University of Rochester School of Medicine & Dentistry, Rochester, NY 14642, USA
| | - Catherine G Burke
- Department of Microbiology & Immunology, University of Rochester School of Medicine & Dentistry, Rochester, NY 14642, USA
| | - Colleen T O'Dell
- Department of Environmental Medicine, University of Rochester School of Medicine & Dentistry, Rochester, NY 14642, USA
| | - Bethany Winans
- Department of Environmental Medicine, University of Rochester School of Medicine & Dentistry, Rochester, NY 14642, USA
| | - B Paige Lawrence
- Department of Environmental Medicine, University of Rochester School of Medicine & Dentistry, Rochester, NY 14642, USA; Department of Microbiology & Immunology, University of Rochester School of Medicine & Dentistry, Rochester, NY 14642, USA.
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Welch BM, Branscum A, Ahmed SM, Hystad P, Smit E, Afroz S, Megowan M, Golam M, Ibne Hasan MOS, Rahman ML, Quamruzzaman Q, Christiani DC, Kile ML. Arsenic exposure and serum antibody concentrations to diphtheria and tetanus toxoid in children at age 5: A prospective birth cohort in Bangladesh. ENVIRONMENT INTERNATIONAL 2019; 127:810-818. [PMID: 31051324 PMCID: PMC6513691 DOI: 10.1016/j.envint.2019.04.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 03/07/2019] [Accepted: 04/05/2019] [Indexed: 05/05/2023]
Abstract
BACKGROUND Arsenic can impair immune function. Timing of exposure can influence potential immunotoxicity of arsenic exposure. We examined the association between drinking water arsenic concentrations (W-As) measured repeatedly during different exposure windows in early life and serum concentrations of IgG antibodies against diphtheria and tetanus toxoids (diphtheria and tetanus antibody). METHODS A prospective cohort of pregnant women was recruited in Bangladesh (2008-2011). Averaged W-As levels were calculated for: pregnancy (W-Aspregnancy): ≤16 weeks gestation and <1 month; toddlerhood (W-Astoddlerhood): 12 and 20-40 months; and early childhood (W-Aschildhood): 4-5 years. Serum was collected from 502 vaccinated children at age 5 and concentrations of diphtheria and tetanus toxoid IgG (i.e. antibody) were quantified. Antibody concentrations >0.1 IU/mL were considered clinically sufficient for protection. Associations were estimated using linear and logistic regression models. RESULTS Inverse associations were observed between W-Aspregnancy and serum diphtheria antibody levels, while null associations were observed between W-As and tetanus antibody. Children within the highest versus lowest tertile of W-Aspregnancy had 91% greater odds of having clinically insufficient concentrations of diphtheria antibody (Odds ratio:1.91, 95% confidence interval (CI): 1.03, 3.56). Among females, a doubling in W-Aspregnancy was associated with 12.3% (95%CI: -20.1%, -4.5%) lower median concentrations of diphtheria antibody. Tetanus antibody was only associated with W-Aspregnancy among females (percent change in median: -9.5%, 95%CI: -17.6%, -1.3%). Among children who were stunted or underweight, a doubling in W-Aspregnancy was associated with decreased diphtheria antibody of 19.8% (95%CI: -32%, -7.5%) and 14.3% (95%CI: -26.7%, -2%), respectively. CONCLUSIONS Among vaccinated children, W-As measured during pregnancy was associated with decreased diphtheria antibody levels, but not tetanus antibody. However, W-As measured during toddlerhood and early childhood were not associated with either antibody outcome. Children's sex and malnutrition status were important effect modifiers of W-As for both diphtheria and tetanus antibody levels, highlighting the importance of these factors and the timing of the exposure when evaluating the effect of arsenic on humoral immunity.
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Affiliation(s)
- Barrett M Welch
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, USA; Oregon Clinical and Translational Research Institute, Oregon Health and Sciences University, USA.
| | - Adam Branscum
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, USA
| | - Sharia M Ahmed
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, USA
| | - Perry Hystad
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, USA
| | - Ellen Smit
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, USA
| | - Sakila Afroz
- Dhaka Community Hospital Trust, Dhaka, Bangladesh
| | - Meghan Megowan
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, USA
| | | | | | | | | | - David C Christiani
- Harvard T.H. Chan School of Public Health, Department of Environmental Health, Harvard University, USA
| | - Molly L Kile
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, USA
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Rychlik KA, Sillé FCM. Environmental exposures during pregnancy: Mechanistic effects on immunity. Birth Defects Res 2019; 111:178-196. [PMID: 30708400 DOI: 10.1002/bdr2.1469] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 01/16/2019] [Indexed: 12/21/2022]
Abstract
In human studies, it is well established that exposures during embryonic and fetal development periods can influence immune health. Coupled with genetic predisposition, these exposures can alter lifetime chronic and infectious disease trajectory, and, ultimately, life expectancy. Fortunately, as research advances, mechanisms governing long-term effects of prenatal exposures are coming to light and providing the opportunity for intervention and risk reduction. For instance, human association studies have provided a foundation for the association of prenatal exposure to particulate matter with early immunosuppression and later allergic disease in the offspring. Only recently, the mechanisms mediating this response have been revealed and there is much we have yet to discover. Although cellular immune response is understood for many exposure scenarios, molecular pathways are still unidentified. This review will provide commentary and synthesis of the current literature regarding environmental exposures during pregnancy and mechanisms determining immune outcomes. Shared mechanistic features and current gaps in the state of the science are identified and discussed. To such purpose, we address exposures by their immune effect type: immunosuppression, autoimmunity, inflammation and tissue damage, hypersensitivity, and general immunomodulation.
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Affiliation(s)
- Kristal A Rychlik
- Department of Environmental Health and Engineering, The Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland
| | - Fenna C M Sillé
- Department of Environmental Health and Engineering, The Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland
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Suntararuks S, Worasuttayangkurn L, Akanimanee J, Suriyo T, Nookabkaew S, Srisamut N, Visitnonthachai D, Watcharasit P, Satayavivad J. Sodium arsenite exposure impairs B cell proliferation and enhances vascular inflammation in Plasmodium berghei mouse model. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2019; 66:7-13. [PMID: 30593951 DOI: 10.1016/j.etap.2018.12.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 11/21/2018] [Accepted: 12/14/2018] [Indexed: 06/09/2023]
Abstract
Arsenic exposure has been linked to an impaired immune response and inflammation. Our study investigated the effects of sodium arsenite on host immune response and vascular inflammation during malarial infection. Mice were divided into three groups: control (C), Plasmodium berghei infection (I) and sodium arsenite exposure with Plasmodium berghei infection (As-I). The results showed that splenocyte proliferation stimulated by lipopolysaccharide (LPS) and pokeweed mitogen (PWM) was suppressed in the I group, and the suppression was more pronounced in the As-I group, suggesting that acquired immunity in infected mice was worsening following arsenic exposure. ICAM-1, an adhesion protein involved in parasite-infected red blood cell (iRBC) binding to endothelium, and HIF-1α, a hypoxia marker protein in the descending aorta, were increased in the As-I group compared to the I group. Collectively, our results suggest that arsenic may increase host susceptibility to malaria through suppression of B cell proliferation and enhancement of adhesion between iRBC and endothelium by increasing ICAM-1.
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Affiliation(s)
- Sumitra Suntararuks
- Laboratory of Pharmacology, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | | | - Jaratluck Akanimanee
- Laboratory of Pharmacology, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Tawit Suriyo
- Laboratory of Pharmacology, Chulabhorn Research Institute, Bangkok 10210, Thailand; Center of Excellence on Environmental Health and Toxicology (EHT), Office of Higher Education Commission, Ministry of Education, Bangkok 10400, Thailand
| | - Sumontha Nookabkaew
- Laboratory of Pharmacology, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Nujorn Srisamut
- Laboratory of Pharmacology, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | | | - Piyajit Watcharasit
- Laboratory of Pharmacology, Chulabhorn Research Institute, Bangkok 10210, Thailand; Center of Excellence on Environmental Health and Toxicology (EHT), Office of Higher Education Commission, Ministry of Education, Bangkok 10400, Thailand
| | - Jutamaad Satayavivad
- Laboratory of Pharmacology, Chulabhorn Research Institute, Bangkok 10210, Thailand; Center of Excellence on Environmental Health and Toxicology (EHT), Office of Higher Education Commission, Ministry of Education, Bangkok 10400, Thailand.
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Leung-Gurung L, Escalante Cobb P, Mourad F, Zambrano C, Muscato Z, Sanchez V, Godde K, Broussard C. Methoxychlor metabolite HPTE alters viability and differentiation of embryonic thymocytes from C57BL/6 mice. J Immunotoxicol 2018; 15:104-118. [PMID: 29973080 DOI: 10.1080/1547691x.2018.1474978] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Endocrine-disrupting chemicals (EDC) are widespread in the built and natural environments. Heightened public awareness of their potential danger has led to concern about whether EDC and their metabolites have significant negative biological effects. Studies have shown that EDC like DDT and other organochlorine pesticides, such as methoxychlor (MXC), have adverse effects on immune cells, but no studies have addressed the impact of HPTE, the primary metabolite of MXC. To elucidate the presence and significance of HPTE adverse effects, this study explored the impact of HPTE on a critical window and component of immune system development, embryonic T-cell development. Lesions at this phase of development can lead to lifelong immune dysfunction and increased incidence of immune disease, such as autoimmunity. Embry-onic thymocytes (GD 16-18) from C57BL/6 mice were subjected to an in vitro differentiation culture that mimicked early steps in thymocyte development in the presence of 0.005, 0.05, 0.5, 5, or 50 μM HPTE, or a model endocrine disruptor, DES. The results indicated that compared to the vehicle control, HPTE- and DES-induced death of thymocytes. Annexin-V staining and Caspase 8, markers of programed cell death, revealed that the loss of cells was due at least in part to induction of apoptosis. Moreover, HPTE-induced cell death not only resulted in selective loss of double positive thymocytes, but also loss of developing CD4 intermediate cells (post-double positive partially differentiated thymocyte population). Phenotypic analysis of thymocyte maturation (T-cell receptor, TCR) and TCR ligation (CD5) surface markers revealed that surviving embryonic thymocytes expressed low levels of both. Taken together these data demonstrate that immature embryonic thymocytes are sensitive to HPTE exposure and that HPTE exposure targets thymocyte populations undergoing critical differentiation steps. These findings suggest HPTE may play a pivotal role in MXC exposure-induced immune dysfunction.
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Affiliation(s)
- Lucie Leung-Gurung
- a School of Community and Global Health , Claremont Graduate University , Claremont , CA , USA
| | | | - Faraj Mourad
- c Irvine Health, University of California , Orange , CA , USA
| | - Cristina Zambrano
- d Department of Pharmacology, School of Medicine , University of California San Diego , La Jolla , CA , USA
| | - Zachary Muscato
- e Department of Psychiatry, School of Medicine , Oregon Health and Science University , Portland , OR , USA
| | - Victoria Sanchez
- b Department of Biology , University of La Verne , La Verne , CA , USA
| | - Kanya Godde
- f Department of Sociology/Anthropology , University of La Verne , La Verne , CA , USA
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Meyers JL, Winans B, Kelsaw E, Murthy A, Gerber S, Lawrence BP. Environmental cues received during development shape dendritic cell responses later in life. PLoS One 2018; 13:e0207007. [PMID: 30412605 PMCID: PMC6226176 DOI: 10.1371/journal.pone.0207007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 10/23/2018] [Indexed: 12/16/2022] Open
Abstract
Environmental signals mediated via the aryl hydrocarbon receptor (AHR) shape the developing immune system and influence immune function. Developmental exposure to AHR binding chemicals causes persistent changes in CD4+ and CD8+ T cell responses later in life, including dampened clonal expansion and differentiation during influenza A virus (IAV) infection. Naïve T cells require activation by dendritic cells (DCs), and AHR ligands modulate the function of DCs from adult organisms. Yet, the consequences of developmental AHR activation by exogenous ligands on DCs later in life has not been examined. We report here that early life activation of AHR durably reduces the ability of DC to activate naïve IAV-specific CD8+ T cells; however, activation of naïve CD4+ T cells was not impaired. Also, DCs from developmentally exposed offspring migrated more poorly than DCs from control dams in both in vivo and ex vivo assessments of DC migration. Conditional knockout mice, which lack Ahr in CD11c lineage cells, suggest that dampened DC emigration is intrinsic to DCs. Yet, levels of chemokine receptor 7 (CCR7), a key regulator of DC trafficking, were generally unaffected. Gene expression analyses reveal changes in Lrp1, Itgam, and Fcgr1 expression, and point to alterations in genes that regulate DC migration and antigen processing and presentation as being among pathways disrupted by inappropriate AHR signaling during development. These studies establish that AHR activation during development causes long-lasting changes to DCs, and provide new information regarding how early life environmental cues shape immune function later in life.
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Affiliation(s)
- Jessica L. Meyers
- Department of Environmental Medicine, University of Rochester School of Medicine & Dentistry, Rochester, New York, United States of America
| | - Bethany Winans
- Department of Environmental Medicine, University of Rochester School of Medicine & Dentistry, Rochester, New York, United States of America
| | - Erin Kelsaw
- Department of Microbiology and Immunology, University of Rochester School of Medicine & Dentistry, Rochester, New York, United States of America
| | - Aditi Murthy
- Department of Microbiology and Immunology, University of Rochester School of Medicine & Dentistry, Rochester, New York, United States of America
| | - Scott Gerber
- Department of Microbiology and Immunology, University of Rochester School of Medicine & Dentistry, Rochester, New York, United States of America
- Department of Surgery, University of Rochester School of Medicine & Dentistry, Rochester, New York, United States of America
| | - B. Paige Lawrence
- Department of Environmental Medicine, University of Rochester School of Medicine & Dentistry, Rochester, New York, United States of America
- Department of Microbiology and Immunology, University of Rochester School of Medicine & Dentistry, Rochester, New York, United States of America
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Tiffon C. The Impact of Nutrition and Environmental Epigenetics on Human Health and Disease. Int J Mol Sci 2018; 19:E3425. [PMID: 30388784 PMCID: PMC6275017 DOI: 10.3390/ijms19113425] [Citation(s) in RCA: 206] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 10/19/2018] [Accepted: 10/29/2018] [Indexed: 12/22/2022] Open
Abstract
Environmental epigenetics describes how environmental factors affect cellular epigenetics and, hence, human health. Epigenetic marks alter the spatial conformation of chromatin to regulate gene expression. Environmental factors with epigenetic effects include behaviors, nutrition, and chemicals and industrial pollutants. Epigenetic mechanisms are also implicated during development in utero and at the cellular level, so environmental exposures may harm the fetus by impairing the epigenome of the developing organism to modify disease risk later in life. By contrast, bioactive food components may trigger protective epigenetic modifications throughout life, with early life nutrition being particularly important. Beyond their genetics, the overall health status of an individual may be regarded as an integration of many environmental signals starting at gestation and acting through epigenetic modifications. This review explores how the environment affects the epigenome in health and disease, with a particular focus on cancer. Understanding the molecular effects of behavior, nutrients, and pollutants might be relevant for developing preventative strategies and personalized heath programs. Furthermore, by restoring cellular differentiation, epigenetic drugs could represent a potential strategy for the treatment of many diseases including cancer.
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Affiliation(s)
- Céline Tiffon
- French National Cancer Institute, 92100 Boulogne-Billancourt, France.
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Simon M, Rigou A, Le Moal J, Zeghnoun A, Le Tertre A, De Crouy-Chanel P, Kaguelidou F, Leger J. Epidemiology of Childhood Hyperthyroidism in France: A Nationwide Population-Based Study. J Clin Endocrinol Metab 2018; 103:2980-2987. [PMID: 29846622 DOI: 10.1210/jc.2018-00273] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 05/23/2018] [Indexed: 12/29/2022]
Abstract
CONTEXT Hyperthyroidism affects all age groups, but epidemiological data for children are scarce. OBJECTIVE To perform a nationwide epidemiological survey of hyperthyroidism in children and adolescents. DESIGN A cross-sectional descriptive study. SETTING Identification of entries corresponding to reimbursements for antithyroid drugs in the French national insurance database. PARTICIPANTS All cases of childhood hyperthyroidism (6 months to 17 years of age) in 2015. MAIN OUTCOME MEASURES National incidence rate estimated with a nonlinear Poisson model and spatial distribution of cases. RESULTS A total of 670 cases of childhood hyperthyroidism were identified. Twenty patients (3%) had associated autoimmune or genetic disease, with type 1 diabetes and Down syndrome the most frequent. The annual incidence for 2015 was 4.58/100,000 person-years (95% CI 3.00 to 6.99/100,000). Incidence increased with age, in both sexes. This increase accelerated after the age of 8 in girls and 10 in boys and was stronger in girls. About 10% of patients were affected before the age of 5 years (sex ratio 1.43). There was an interaction between age and sex, the effect of being female increasing with age: girls were 3.2 times more likely to be affected than boys in the 10 to 14 years age group and 5.7 times more likely to be affected in the 15 to 17 years age group. No conclusions about spatial pattern emerged. CONCLUSION These findings shed light on the incidence of hyperthyroidism and the impact of sex on this incidence during childhood and adolescence. The observed incidence was higher than expected from the results published for earlier studies in Northern European countries.
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Affiliation(s)
- Marie Simon
- Santé publique France, Environmental Health Direction, Saint-Maurice, France
| | - Annabel Rigou
- Santé publique France, Environmental Health Direction, Saint-Maurice, France
| | - Joëlle Le Moal
- Santé publique France, Environmental Health Direction, Saint-Maurice, France
| | - Abdelkrim Zeghnoun
- Santé publique France, Environmental Health Direction, Saint-Maurice, France
| | - Alain Le Tertre
- Santé publique France, Environmental Health Direction, Saint-Maurice, France
| | | | - Florentia Kaguelidou
- Department of Pediatric Pharmacology and Pharmacogenetics, Hôpital Universitaire Robert Debré, Assistance Publique-Hôpitaux de Paris, Paris, France
- Clinical Investigations Center, INSERM CIC 1426, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, UMR-1123 ECEVE, Paris, France
| | - Juliane Leger
- Department of Pediatric Endocrinology and Diabetes, Reference Centre for Endocrine Growth and Development Diseases, Hôpital Universitaire Robert Debré, Assistance Publique-Hôpitaux de Paris, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France
- UMR 1141, DHU Protect, Institut National de la Santé et de la Recherche Médicale (Inserm), Paris, France
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Functional Assays of Hematopoietic Stem Cells in Toxicology Research. Methods Mol Biol 2018. [PMID: 29882147 DOI: 10.1007/978-1-4939-8549-4_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
The hematopoietic stem cell is the foundational cell of the entire blood and immune system and as such is particularly sensitive to toxicological insults. While this review will identify some of the classes of chemicals known to be hematotoxic, most of the discussion will focus on the strengths and weaknesses of various hematological assays used in toxicology research. Furthermore, protocols for isolating both human and murine hematopoietic stem cells are described. Methodologies are also described for various culture systems useful for testing the impacts of potential toxicants on hematopoietic stem cells both in vivo and in vitro.
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Boulé LA, Chapman TJ, Hillman SE, Kassotis CD, O’Dell C, Robert J, Georas SN, Nagel SC, Lawrence BP. Developmental Exposure to a Mixture of 23 Chemicals Associated With Unconventional Oil and Gas Operations Alters the Immune System of Mice. Toxicol Sci 2018; 163:639-654. [PMID: 29718478 PMCID: PMC5974794 DOI: 10.1093/toxsci/kfy066] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Chemicals used in unconventional oil and gas (UOG) operations have the potential to cause adverse biological effects, but this has not been thoroughly evaluated. A notable knowledge gap is their impact on development and function of the immune system. Herein, we report an investigation of whether developmental exposure to a mixture of chemicals associated with UOG operations affects the development and function of the immune system. We used a previously characterized mixture of 23 chemicals associated with UOG, and which was demonstrated to affect reproductive and developmental endpoints in mice. C57Bl/6 mice were maintained throughout pregnancy and during lactation on water containing two concentrations of this 23-chemical mixture, and the immune system of male and female adult offspring was assessed. We comprehensively examined the cellularity of primary and secondary immune organs, and used three different disease models to probe potential immune effects: house dust mite-induced allergic airway disease, influenza A virus infection, and experimental autoimmune encephalomyelitis (EAE). In all three disease models, developmental exposure altered frequencies of certain T cell sub-populations in female, but not male, offspring. Additionally, in the EAE model disease onset occurred earlier and was more severe in females. Our findings indicate that developmental exposure to this mixture had persistent immunological effects that differed by sex, and exacerbated responses in an experimental model of autoimmune encephalitis. These observations suggest that developmental exposure to complex mixtures of water contaminants, such as those derived from UOG operations, could contribute to immune dysregulation and disease later in life.
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Affiliation(s)
| | - Timothy J Chapman
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14842
| | - Sara E Hillman
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14842
| | - Christopher D Kassotis
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14842
- Department of Obstetrics, Gynecology and Women’s Health, School of Medicine, University of Missouri, Columbia, MO 65212
| | | | - Jacques Robert
- Department of Environmental Medicine
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, New York
| | - Steve N Georas
- Department of Environmental Medicine
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14842
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, New York
| | - Susan C Nagel
- Department of Obstetrics, Gynecology and Women’s Health, School of Medicine, University of Missouri, Columbia, MO 65212
| | - B Paige Lawrence
- Department of Environmental Medicine
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, New York
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Ye M, Warner M, Mocarelli P, Brambilla P, Eskenazi B. Prenatal exposure to TCDD and atopic conditions in the Seveso second generation: a prospective cohort study. Environ Health 2018; 17:22. [PMID: 29482571 PMCID: PMC5827999 DOI: 10.1186/s12940-018-0365-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 02/14/2018] [Indexed: 05/03/2023]
Abstract
BACKGROUND 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is a toxic environmental contaminant that can bioaccumulate in humans, cross the placenta, and cause immunological effects in children, including altering their risk of developing allergies. On July 10, 1976, a chemical explosion in Seveso, Italy, exposed nearby residents to a high amount of TCDD. In 1996, the Seveso Women's Health Study (SWHS) was established to study the effects of TCDD on women's health. Using data from the Seveso Second Generation Health Study, we aim to examine the effect of prenatal exposure to TCDD on the risk of atopic conditions in SWHS children born after the explosion. METHODS Individual-level TCDD was measured in maternal serum collected soon after the accident. In 2014, we initiated the Seveso Second Generation Health Study to follow-up the children of the SWHS cohort who were born after the explosion or who were exposed in utero to TCDD. We enrolled 677 children, and cases of atopic conditions, including eczema, asthma, and hay fever, were identified by self-report during personal interviews with the mothers and children. Log-binomial and Poisson regressions were used to determine the association between prenatal TCDD and atopic conditions. RESULTS A 10-fold increase in 1976 maternal serum TCDD (log10TCDD) was not significantly associated with asthma (adjusted relative risk (RR) = 0.93; 95% CI: 0.61, 1.40) or hay fever (adjusted RR = 0.99; 95% CI: 0.76, 1.27), but was significantly inversely associated with eczema (adjusted RR = 0.63; 95% CI: 0.40, 0.99). Maternal TCDD estimated at pregnancy was not significantly associated with eczema, asthma, or hay fever. There was no strong evidence of effect modification by child sex. CONCLUSIONS Our results suggest that maternal serum TCDD near the time of explosion is associated with lower risk of eczema, which supports other evidence pointing to the dysregulated immune effects of TCDD.
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Affiliation(s)
- Morgan Ye
- Center for Environmental Research & Children’s Health (CERCH), School of Public Health, University of California, 1995 University Avenue, Suite 265, Berkeley, CA 94720-7392 USA
| | - Marcella Warner
- Center for Environmental Research & Children’s Health (CERCH), School of Public Health, University of California, 1995 University Avenue, Suite 265, Berkeley, CA 94720-7392 USA
| | - Paolo Mocarelli
- Department of Laboratory Medicine, University of Milano-Bicocca and Hospital of Desio, Desio-Milano, Italy
| | - Paolo Brambilla
- Department of Laboratory Medicine, University of Milano-Bicocca and Hospital of Desio, Desio-Milano, Italy
| | - Brenda Eskenazi
- Center for Environmental Research & Children’s Health (CERCH), School of Public Health, University of California, 1995 University Avenue, Suite 265, Berkeley, CA 94720-7392 USA
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