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Dhapola R, Sharma P, Kumari S, Bhatti JS, HariKrishnaReddy D. Environmental Toxins and Alzheimer's Disease: a Comprehensive Analysis of Pathogenic Mechanisms and Therapeutic Modulation. Mol Neurobiol 2024; 61:3657-3677. [PMID: 38006469 DOI: 10.1007/s12035-023-03805-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 11/13/2023] [Indexed: 11/27/2023]
Abstract
Alzheimer's disease is a leading cause of mortality worldwide. Inorganic and organic hazards, susceptibility to harmful metals, pesticides, agrochemicals, and air pollution are major environmental concerns. As merely 5% of AD cases are directly inherited indicating that these environmental factors play a major role in disease development. Long-term exposure to environmental toxins is believed to progress neuropathology, which leads to the development of AD. Numerous in-vitro and in-vivo studies have suggested the harmful impact of environmental toxins at cellular and molecular level. Common mechanisms involved in the toxicity of these environmental pollutants include oxidative stress, neuroinflammation, mitochondrial dysfunction, abnormal tau, and APP processing. Increased expression of GSK-3β, BACE-1, TNF-α, and pro-apoptotic molecules like caspases is observed upon exposure to these environmental toxins. In addition, the expression of neurotrophins like BDNF and GAP-43 have been found to be reduced as a result of toxicity. Further, modulation of signaling pathways involving PARP-1, PGC-1α, and MAPK/ERK induced by toxins have been reported to contribute in AD pathogenesis. These pathways are a promising target for developing novel AD therapeutics. Drugs like epigallocatechin-gallate, neflamapimod, salsalate, dexmedetomidine, and atabecestat are in different phases of clinical trials targeting the pathways for possible treatment of AD. This review aims to culminate the correlation between environmental toxicants and AD development. We emphasized upon the signaling pathways involved in the progression of the disease and the therapeutics under clinical trial targeting the altered pathways for possible treatment of AD.
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Affiliation(s)
- Rishika Dhapola
- Advanced Pharmacology and Neuroscience Laboratory, Department of Pharmacology, Central University of Punjab, Bathinda, 151 401, India
| | - Prajjwal Sharma
- Advanced Pharmacology and Neuroscience Laboratory, Department of Pharmacology, Central University of Punjab, Bathinda, 151 401, India
| | - Sneha Kumari
- Advanced Pharmacology and Neuroscience Laboratory, Department of Pharmacology, Central University of Punjab, Bathinda, 151 401, India
| | - Jasvinder Singh Bhatti
- Laboratory of Translational Medicine and Nanotherapeutics, Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, 151 401, India
| | - Dibbanti HariKrishnaReddy
- Advanced Pharmacology and Neuroscience Laboratory, Department of Pharmacology, Central University of Punjab, Bathinda, 151 401, India.
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Bjørklund G, Tippairote T, Hangan T, Chirumbolo S, Peana M. Early-Life Lead Exposure: Risks and Neurotoxic Consequences. Curr Med Chem 2024; 31:1620-1633. [PMID: 37031386 DOI: 10.2174/0929867330666230409135310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 02/10/2023] [Accepted: 02/16/2023] [Indexed: 04/10/2023]
Abstract
BACKGROUND Lead (Pb) does not have any biological function in a human, and it is likely no safe level of Pb in the human body. The Pb exposure impacts are a global concern for their potential neurotoxic consequences. Despite decreasing both the environmental Pb levels and the average blood Pb levels in the survey populations, the lifetime redistribution from the tissues-stored Pb still poses neurotoxic risks from the low-level exposure in later life. The growing fetus and children hold their innate high-susceptible to these Pb-induced neurodevelopmental and neurobehavioral effects. OBJECTIVE This article aims to evaluate cumulative studies and insights on the topic of Pb neurotoxicology while assessing the emerging trends in the field. RESULTS The Pb-induced neurochemical and neuro-immunological mechanisms are likely responsible for the high-level Pb exposure with the neurodevelopmental and neurobehavioral impacts at the initial stages. Early-life Pb exposure can still produce neurodegenerative consequences in later life due to the altered epigenetic imprints and the ongoing endogenous Pb exposure. Several mechanisms contribute to the Pb-induced neurotoxic impacts, including the direct neurochemical effects, the induction of oxidative stress and inflammation through immunologic activations, and epigenetic alterations. Furthermore, the individual nutritional status, such as macro-, micro-, or antioxidant nutrients, can significantly influence the neurotoxic impacts even at low-level exposure to Pb. CONCLUSION The prevention of early-life Pb exposure is, therefore, the critical determinant for alleviating various Pb-induced neurotoxic impacts across the different age groups.
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Affiliation(s)
- Geir Bjørklund
- Council for Nutritional and Environmental Medicine (CONEM), Toften 24, Mo i Rana, 8610, Norway
| | - Torsak Tippairote
- Department of Nutritional and Environmental Medicine, HP Medical Center, Bangkok 10540, Thailand
| | - Tony Hangan
- Faculty of Medicine, Ovidius University of Constanta, Constanta, 900470, Romania
| | - Salvatore Chirumbolo
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, 37134, Italy
- CONEM Scientific Secretary, Strada Le Grazie 9, 37134, Verona, Italy
| | - Massimiliano Peana
- Department of Chemical, Physical, Mathematical and Natural Sciences, University of Sassari, Via Vienna 2, Sassari, 07100, Italy
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Mallick R, Duttaroy AK. Epigenetic modification impacting brain functions: Effects of physical activity, micronutrients, caffeine, toxins, and addictive substances. Neurochem Int 2023; 171:105627. [PMID: 37827244 DOI: 10.1016/j.neuint.2023.105627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 10/06/2023] [Accepted: 10/07/2023] [Indexed: 10/14/2023]
Abstract
Changes in gene expression are involved in many brain functions. Epigenetic processes modulate gene expression by histone modification and DNA methylation or RNA-mediated processes, which is important for brain function. Consequently, epigenetic changes are also a part of brain diseases such as mental illness and addiction. Understanding the role of different factors on the brain epigenome may help us understand the function of the brain. This review discussed the effects of caffeine, lipids, addictive substances, physical activity, and pollutants on the epigenetic changes in the brain and their modulatory effects on brain function.
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Affiliation(s)
- Rahul Mallick
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Finland
| | - Asim K Duttaroy
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, POB 1046 Blindern, Oslo, Norway.
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Jouabadi SM, Ataabadi EA, Golshiri K, Bos D, Stricker BHC, Danser AHJ, Mattace-Raso F, Roks AJM. Clinical Impact and Mechanisms of Nonatherosclerotic Vascular Aging: The New Kid to Be Blocked. Can J Cardiol 2023; 39:1839-1858. [PMID: 37495207 DOI: 10.1016/j.cjca.2023.07.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 07/07/2023] [Accepted: 07/20/2023] [Indexed: 07/28/2023] Open
Abstract
Ischemic cardiovascular disease and stroke remain the leading cause of global morbidity and mortality. During aging, protective mechanisms in the body gradually deteriorate, resulting in functional, structural, and morphologic changes that affect the vascular system. Because atherosclerotic plaques are not always present along with these alterations, we refer to this kind of vascular aging as nonatherosclerotic vascular aging (NAVA). To maintain proper vascular function during NAVA, it is important to preserve intracellular signalling, prevent inflammation, and block the development of senescent cells. Pharmacologic interventions targeting these components are potential therapeutic approaches for NAVA, with a particular emphasis on inflammation and senescence. This review provides an overview of the pathophysiology of vascular aging and explores potential pharmacotherapies that can improve the function of aged vasculature, focusing on NAVA.
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Affiliation(s)
- Soroush Mohammadi Jouabadi
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands; Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Ehsan Ataei Ataabadi
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Keivan Golshiri
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Daniel Bos
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands; Department of Radiology and Nuclear Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Bruno H C Stricker
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - A H Jan Danser
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Francesco Mattace-Raso
- Division of Geriatric Medicine, Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Anton J M Roks
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands.
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Li ZH, Li J, Mao YC, Zhao JW, Hu HY, Zhang S, Liu ZY, Liu XJ, Huang K, Hu CY, Zhang XJ. Association of urinary heavy metal combined exposure with periodontitis among US adults from NHANES 2011-2014. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:107887-107898. [PMID: 37740806 DOI: 10.1007/s11356-023-29888-6] [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: 07/01/2023] [Accepted: 09/11/2023] [Indexed: 09/25/2023]
Abstract
Some heavy metals are associated with periodontitis; whereas most of these associations have focused on individual metal, there are no specific studies on the effects of combined heavy metal exposure on periodontitis. We conducted an analysis on the association between urinary heavy metal exposure and periodontitis in participants aged 30 years and older using multiple logistic regression and Bayesian kernel machine regression (BKMR). This analysis was performed on data from the National Health and Nutrition Examination Survey from 2011 to 2014. The study found that using logistic regression, the 4th quartile of urinary lead and molybdenum and the 3rd quartile of urinary strontium were positively associated with periodontitis compared to the reference quartile after adjusting for covariates. Odds ratio (OR) with 95% confidence interval (CI) was 1.738 (1.069-2.826), 1.515 (1.025-2.239), and 1.498 (1.010-2.222), respectively. The 3rd and 4th quartiles of urinary cobalt were negatively associated with periodontitis, and their ORs and 95% CIs were 0.639 (0.438-0.934) and 0.571 (0.377-0.964), respectively. The BKMR model showed that urinary barium, lead, and molybdenum were positively associated with periodontitis in a range of concentrations and urinary cobalt, manganese, tin, and strontium were negatively correlated with periodontitis. Furthermore, the overall association between urinary heavy metals and periodontitis was positive. Our study provides evidence for an association between exposure to multiple urinary heavy metals and periodontitis. However, further longitudinal studies are needed to explore the specific mechanisms involved.
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Affiliation(s)
- Zhen-Hua Li
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Jiong Li
- Key Lab. of Oral Diseases Research of Anhui Province, College & Hospital of Stomatology, Anhui Medical University, Hefei, 230032, China
| | - Yi-Cheng Mao
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Jia-Wen Zhao
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Hui-Yu Hu
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Sun Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Zhe-Ye Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Xue-Jie Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Kai Huang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
- Department of Hospital Infection Prevention and Control, The Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei, 230601, China
| | - Cheng-Yang Hu
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
- Department of Humanistic Medicine, School of Humanistic Medicine, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Xiu-Jun Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China.
- Key Lab. of Oral Diseases Research of Anhui Province, College & Hospital of Stomatology, Anhui Medical University, Hefei, 230032, China.
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Nunes EA, Silva HCD, Duarte NDAA, de Lima LE, Maraslis FT, Araújo MLD, Pedron T, Lange C, Freire BM, Matias AC, Batista BL, Barcelos GRM. Impact of DNA repair polymorphisms on DNA instability biomarkers induced by lead (Pb) in workers exposed to the metal. CHEMOSPHERE 2023:138897. [PMID: 37182709 DOI: 10.1016/j.chemosphere.2023.138897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 05/05/2023] [Accepted: 05/07/2023] [Indexed: 05/16/2023]
Abstract
Although the mechanisms of Pb-induced genotoxicity are well established, a wide individual's variation response is seen in biomarkers related to Pb toxicity, despite similar levels of metal exposure. This may be related to intrinsic variations, such as genetic polymorphisms; moreover, very little is known about the impact of genetic variations related to DNA repair system on DNA instability induced by Pb. In this context, the present study aimed to assess the impact of SNPs in enzymes related to DNA repair system on biomarkers related to acute toxicity and DNA damage induced by Pb exposure, in individuals occupationally exposed to the metal. A cross-sectional study was run with 154 adults (males, >18 years) from an automotive batteries' factory, in Brazil. Blood lead levels (BLL) were determined by ICP-MS; biomarkers related to acute toxicity and DNA instability were monitored by the buccal micronucleus cytome (BMNCyt) assay and genotyping of polymorphisms of MLH1 (rs1799977), OGG1 (rs1052133), PARP1 (rs1136410), XPA (rs1800975), XPC (rs2228000) and XRCC1 (rs25487) were performed by TaqMan assays. BLL ranged from 2.0 to 51 μg dL-1 (mean 20 ± 12 μg dL-1) and significant associations between BLL and BMNCyt biomarkers related to cellular proliferation and cytokinetic, cell death and DNA damage were observed. Furthermore, SNPs from the OGG1, XPA and XPC genes were able to modulate interactions in nuclear bud formation (NBUDs) and micronucleus (MNi) events. Taken together, our data provide further evidence that polymorphisms related to DNA repair pathways may modulate Pb-induced DNA damage; studies that investigate the association between injuries to genetic material and susceptibilities in the workplace can provide additional information on the etiology of diseases and the determination of environmentally responsive genes.
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Affiliation(s)
- Emilene Arusievicz Nunes
- Department of Biosciences, Institute of Health and Society, Federal University of São Paulo, Rua XV de Novembro 195, CEP 11.060-001, Santos, Brazil.
| | - Heliton Camargo da Silva
- Department of Biosciences, Institute of Health and Society, Federal University of São Paulo, Rua XV de Novembro 195, CEP 11.060-001, Santos, Brazil.
| | - Nathália de Assis Aguilar Duarte
- Department of Biosciences, Institute of Health and Society, Federal University of São Paulo, Rua XV de Novembro 195, CEP 11.060-001, Santos, Brazil.
| | - Lindiane Eloisa de Lima
- Department of Biosciences, Institute of Health and Society, Federal University of São Paulo, Rua XV de Novembro 195, CEP 11.060-001, Santos, Brazil.
| | - Flora Troina Maraslis
- Department of Biosciences, Institute of Health and Society, Federal University of São Paulo, Rua XV de Novembro 195, CEP 11.060-001, Santos, Brazil.
| | - Marília Ladeira de Araújo
- Department of Biosciences, Institute of Health and Society, Federal University of São Paulo, Rua XV de Novembro 195, CEP 11.060-001, Santos, Brazil.
| | - Tatiana Pedron
- Center of Natural and Human Sciences, Federal University of ABC, Avenida Dos Estados, 5001, CEP 09210-580, Santo André, Brazil.
| | - Camila Lange
- Center of Natural and Human Sciences, Federal University of ABC, Avenida Dos Estados, 5001, CEP 09210-580, Santo André, Brazil.
| | - Bruna Moreira Freire
- Center of Natural and Human Sciences, Federal University of ABC, Avenida Dos Estados, 5001, CEP 09210-580, Santo André, Brazil.
| | - Andreza Cândido Matias
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, Avenida Professor Lineu Prestes, 1524, CEP 05508-000, São Paulo, Brazil.
| | - Bruno Lemos Batista
- Center of Natural and Human Sciences, Federal University of ABC, Avenida Dos Estados, 5001, CEP 09210-580, Santo André, Brazil.
| | - Gustavo Rafael Mazzaron Barcelos
- Department of Biosciences, Institute of Health and Society, Federal University of São Paulo, Rua XV de Novembro 195, CEP 11.060-001, Santos, Brazil.
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Kefayati F, Karimi Babaahmadi A, Mousavi T, Hodjat M, Abdollahi M. Epigenotoxicity: a danger to the future life. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2023; 58:382-411. [PMID: 36942370 DOI: 10.1080/10934529.2023.2190713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 02/17/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
Environmental toxicants can regulate gene expression in the absence of DNA mutations via epigenetic mechanisms such as DNA methylation, histone modifications, and non-coding RNAs' (ncRNAs). Here, all three epigenetic modifications for seven important categories of diseases and the impact of eleven main environmental factors on epigenetic modifications were discussed. Epigenetic-related mechanisms are among the factors that could explain the root cause of a wide range of common diseases. Its overall impression on the development of diseases can help us diagnose and treat diseases, and besides, predict transgenerational and intergenerational effects. This comprehensive article attempted to address the relationship between environmental factors and epigenetic modifications that cause diseases in different categories. The studies main gap is that the precise role of environmentally-induced epigenetic alterations in the etiology of the disorders is unknown; thus, still more well-designed researches need to be accomplished to fill this gap. The present review aimed to first summarize the adverse effect of certain chemicals on the epigenome that may involve in the onset of particular disease based on in vitro and in vivo models. Subsequently, the possible adverse epigenetic changes that can lead to many human diseases were discussed.
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Affiliation(s)
- Farzaneh Kefayati
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), Tehran University of Medical Sciences, Tehran, Iran
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Atoosa Karimi Babaahmadi
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), Tehran University of Medical Sciences, Tehran, Iran
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Taraneh Mousavi
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), Tehran University of Medical Sciences, Tehran, Iran
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahshid Hodjat
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), Tehran University of Medical Sciences, Tehran, Iran
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Abdollahi
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), Tehran University of Medical Sciences, Tehran, Iran
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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Bai L, Wu Y, Wang R, Liu R, Liu M, Li Q, Ba Y, Zhang H, Zhou G, Yu F, Huang H. Prepubertal exposure to Pb alters autophagy in the brain of aging mice: A time-series based model. Brain Res Bull 2022; 189:22-33. [PMID: 35987294 DOI: 10.1016/j.brainresbull.2022.08.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 08/10/2022] [Accepted: 08/13/2022] [Indexed: 12/09/2022]
Abstract
As a ubiquitous toxic heavy metal, lead (Pb) exposure is known to be implicated in the onset and development of neurodegenerative diseases which may cause more serious health hazards with age and the accumulation of Pb in the body. Autophagy is the main degradation route for abnormal aggregated proteins and damaged cell organelles. Here, we aimed to study the effects of adolescent Pb exposure on autophagy at different life nodes. In this study, we developed a time-series model of Pb exposure in mice and randomly divided 4-week-old male C57BL/6 mice into six groups (4 C, 13 C, 16 C, 4Pb, 13Pb and 16Pb). Mice in Pb groups was consumed deionized water containing 0.2 % Pb(Ac)2 for 3 months and then reared to anticipated life nodes, while the control group consumed deionized water. Western blot and Real-time qPCR were used to assess the effects of developmental Pb exposure on individual components of the autophagy machinery and modulation of microtubule-associated protein 1 light chain 3 (LC3) at each age stage. Our results showed that Pb exposure during adolescence reduced the p-mTOR/mTOR ratios with enhanced expression of Beclin-1, Atg12 and Atg7in both the hippocampus (HPC) and prefrontal cortex (PFC) of senescent mice while upregulation of LC3II/LC3I ratios and p62 suggested that autophagy mediates degradation was interrupted. Overall, we confirm that Pb exposure during adolescence promotes autophagic processes in the aged mice brain and that autophagic degradation is hindered, ultimately leading to a failure of autophagic degradation.
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Affiliation(s)
- Lin Bai
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China.
| | - Yingying Wu
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China.
| | - Ruike Wang
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China.
| | - Rundong Liu
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China.
| | - Mengchen Liu
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China.
| | - Qiong Li
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China.
| | - Yue Ba
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China.
| | - Huizhen Zhang
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China.
| | - Guoyu Zhou
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China.
| | - Fangfang Yu
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China.
| | - Hui Huang
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province 450001, China.
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Hernández-Mendoza H, Rios-Lugo MJ, Álvarez-Loredo HE, Romero-Guzmán ET, Gaytán-Hernández D, Martínez-Navarro I, Juárez-Flores BI, Chang-Rueda C. Serum lead levels and its association with overweight and obesity. J Trace Elem Med Biol 2022; 72:126984. [PMID: 35427954 DOI: 10.1016/j.jtemb.2022.126984] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 02/16/2022] [Accepted: 04/07/2022] [Indexed: 01/06/2023]
Abstract
BACKGROUND Lead (Pb) exposure has been associated with cardiovascular diseases and metabolic syndrome, nevertheless its association with obesity, type 2 diabetes, and dyslipidemia markers has been little explored in Mexico. Therefore, we evaluated the association of serum Pb levels (Pb-S), with body mass index (BMI), fasting plasma glucose (FPG), total cholesterol (TC), and triglycerides (TG). METHODS A cross-sectional study was performed on 85 Mexican adults (57 women and 28 men). BMI was calculated, while FPG, TC, and TG were measured by the enzymatic colorimetric method. Total Pb-S levels were measured using inductively coupled plasma mass spectrometry (ICP-MS). RESULTS The study population was 20.3 ± 1.9 years old, showed an average of Pb-S of 0.0982 ± 0.068 μg dL-1, and presented a frequency of overweight (OW) and obesity (OB) of 50.5% and 18.8%, respectively. Men had higher average FPG than women (Women= 83.930 ± 5.662 vs Men= 84.953 ± 6.495; p = 0.037). When we analyzed anthropometric and clinical variables, Pb-S and frequency of OW and OB were observed to increase within the categories of Pb-S tertiles (<0.001). The averages of Pb-S were 0.051 ± 0.035 µg dL-1, 0.107 ± 0.067 µg dL-1, and 0.151 ± 0.063 µg dL-1 for individuals with normal weight (NW), OW, and OB, respectively. In addition, an analysis adjusted for age and sex shows Pb-S is positively associated with BMI (β = 2.76 ± 0.498, p = <0.001). CONCLUSION Our results evidence a significant association between Pb-S and the increase of BMI in Mexican adults and highlight the important health impact that may represent environmental Pb exposure.
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Affiliation(s)
- Héctor Hernández-Mendoza
- Instituto de Investigación de Zonas Desérticas, Universidad Autónoma de San Luis Potosí, Altair 200, C.P, 78377 San Luis Potosí, SLP, Mexico; Universidad del Centro de México, Capitán Caldera 75, C.P., 78250 San Luis Potosí, SLP, Mexico
| | - María Judith Rios-Lugo
- Unidad de Posgrado, Facultad de Enfermería y Nutrición, Universidad Autónoma de San Luis Potosí, Avda. Niño Artillero 130, C.P., 78210 San Luis Potosí, SLP, Mexico; Sección de Medicina Molecular y Traslacional, Centro de Investigación en Ciencias de Salud y Biomedicina, Universidad Autónoma de San Luis Potosí, Avda, Sierra Leona 550, C.P., 78210 San Luis Potosí, SLP, Mexico.
| | - Héctor Edmundo Álvarez-Loredo
- Sección de Medicina Molecular y Traslacional, Centro de Investigación en Ciencias de Salud y Biomedicina, Universidad Autónoma de San Luis Potosí, Avda, Sierra Leona 550, C.P., 78210 San Luis Potosí, SLP, Mexico
| | - Elizabeth Teresita Romero-Guzmán
- Departamento de Química, Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca s/n, C.P., La Marquesa, 52750 Ocoyoacác, Mexico
| | - Darío Gaytán-Hernández
- Unidad de Posgrado, Facultad de Enfermería y Nutrición, Universidad Autónoma de San Luis Potosí, Avda. Niño Artillero 130, C.P., 78210 San Luis Potosí, SLP, Mexico
| | - Israel Martínez-Navarro
- Sección de Medicina Molecular y Traslacional, Centro de Investigación en Ciencias de Salud y Biomedicina, Universidad Autónoma de San Luis Potosí, Avda, Sierra Leona 550, C.P., 78210 San Luis Potosí, SLP, Mexico
| | - Bertha Irene Juárez-Flores
- Instituto de Investigación de Zonas Desérticas, Universidad Autónoma de San Luis Potosí, Altair 200, C.P, 78377 San Luis Potosí, SLP, Mexico
| | - Consuelo Chang-Rueda
- Facultad de Ciencias Químicas, Campus IV. Universidad Autónoma de Chiapas, Carretera a Puerto Madero Km 1.5, C.P., 30580, Tapachula, Chiapas, Mexico
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10
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Khalid M, Hodjat M, Baeeri M, Rahimifard M, Bayrami Z, Abdollahi M. Lead inhibits the odontogenic differentiation potential of dental pulp stem cells by affecting WNT1/β-catenin signaling and related miRNAs expression. Toxicol In Vitro 2022; 83:105422. [PMID: 35738543 DOI: 10.1016/j.tiv.2022.105422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 05/04/2022] [Accepted: 06/16/2022] [Indexed: 11/19/2022]
Abstract
Lead (Pb) is ubiquitous in environment that accumulates in teeth and calcified tissues from where it releases gradually with aging and adversely affects dental health. This study aimed to determine the effect of Pb exposure on odontogenic differentiation potential of isolated human dental pulp stem cells and investigate the possible underlying epigenetic factors. In the absence of Pb exposure, stem cells displayed significant odontogenic markers including elevated Alkaline Phosphatase (ALP) activity, Alizarin red staining intensity, and increased expression of odontogenic DMP1 and DSPP genes. Exposure to 60 μM Pb resulted in reduced ALP activity and calcium deposition. Also, diminished expression of RUNX2, DMP1, and DSPP, as well as Wnt signaling mediators including WNT1, and β-catenin were detected. The expression of Wnt signaling related microRNAs, miRNA-139-5p and miRNA-142-3p, on the other hand, were shown to have a significant increase. We concluded that Pb could adversely affect the odontogenic differentiation potential of dental pulp stem cell. The underlying mechanism might related to Pb-induced epigenetic dysregulation of WNT1/β-catenin pathway-related miRNAs leading to down-regulation of Wnt/β-catenin related odontogenic genes and eventually impaired odontogenic differentiation process.
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Affiliation(s)
- Madiha Khalid
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), and Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Mahshid Hodjat
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
| | - Maryam Baeeri
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), and Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Mahban Rahimifard
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), and Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Zahra Bayrami
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), and Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Mohammad Abdollahi
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), and Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
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11
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Herrera-Moreno JF, Estrada-Gutierrez G, Wu H, Bloomquist TR, Rosa MJ, Just AC, Lamadrid-Figueroa H, Téllez-Rojo MM, Wright RO, Baccarelli AA. Prenatal lead exposure, telomere length in cord blood, and DNA methylation age in the PROGRESS prenatal cohort. ENVIRONMENTAL RESEARCH 2022; 205:112577. [PMID: 34921825 DOI: 10.1016/j.envres.2021.112577] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 12/02/2021] [Accepted: 12/12/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND Lead is a ubiquitous pollutant with deleterious effects on human health and remains a major current public health concern in developing countries. This heavy metal may interfere with nucleic acids via oxidative stress or epigenetic changes that affect biological markers of aging, e.g., telomere length and DNA methylation (DNAm). Telomere shortening associates with biological age in newborns, and DNA methylation at specific CpG sites can be used to calculate "epigenetic clocks". OBJECTIVE The aim of this study was to examine the associations of prenatal lead exposures with telomere length and DNA-methylation-based predictors of age in cord blood. DESIGN The study included 507 mother-child pairs from the Programming Research in Obesity, Growth, Environment and Social Stressors (PROGRESS) study, a birth cohort in Mexico City. Maternal blood (second trimester, third trimester and at delivery) and bone lead levels (one month postpartum) were measured using inductively coupled plasma-mass spectrometry and X-ray fluorescence, respectively. Cord blood leukocyte telomere length was measured using quantitative PCR and apparent age by DNA methylation biomarkers, i.e., Horvath's DNA methylation age and the Knight's predictor of gestational age. RESULTS Average maternal age was 28.5 ± 5.5 years, and 51.5% reported low socioeconomic status. Children's mean telomere length was 1.2 ± 1.3 relative units, and mean DNA methylation ages using the Horvath's and Knight's clocks were -2.6 ± 0.1 years and 37.9 ± 1.4 weeks (mean ± SD), respectively. No significant associations were found between maternal blood and bone lead concentrations with telomere length and DNAm age in newborns. CONCLUSION We found no associations of prenatal lead exposure with telomere length and DNA methylation age biomarkers.
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Affiliation(s)
- José F Herrera-Moreno
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | | | - Haotian Wu
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Tessa R Bloomquist
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Maria José Rosa
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Allan C Just
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Hector Lamadrid-Figueroa
- Department of Perinatal Health, National Institute of Public Health, Cuernavaca, Morelos, Mexico
| | - Martha M Téllez-Rojo
- Center for Nutrition and Health Research, National Institute of Public Health, Cuernavaca, Morelos, Mexico
| | - Robert O Wright
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Andrea A Baccarelli
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
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12
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Lee M, Lee H, Warren JR, Herd P. Effect of childhood proximity to lead mining on late life cognition. SSM Popul Health 2022; 17:101037. [PMID: 35146115 PMCID: PMC8818565 DOI: 10.1016/j.ssmph.2022.101037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/13/2022] [Accepted: 01/25/2022] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Lead exposure negatively affects cognitive functioning among children. However, there is limited evidence about whether exposure to lead in early life impairs later life cognitive functioning. METHODS Participants in the prospective Wisconsin Longitudinal Study cohort (N = 8583) were linked to the 1940 Census, which was taken when they were young children. We estimated the effect of living near a lead mine in childhood on late life memory/attention and language/executive function in 2004 (mean age 64) and 2011 (mean age 71). RESULTS Lead-exposed children had significantly steeper memory/attention decline between 2004 and 2011 and worse language/executive function at baseline in late life. These long-term effects of lead were not mediated through adolescent IQ or late life SES and health factors. DISCUSSION Proximity to lead mining in childhood had long-term effects on late life memory/attention decline and language/executive function, reflecting a possible latent influence of lead exposure. More research is needed to understand behavioral and biological pathways underlying this relationship.
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Affiliation(s)
- Mark Lee
- Minnesota Population Center, Minneapolis, MN, USA
- Department of Sociology, University of Minnesota, Minneapolis, MN, USA
- Corresponding author. 50 Willey Hall, 225 19th Avenue South, Minneapolis, MN, 55455, USA.
| | - Haena Lee
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - John Robert Warren
- Minnesota Population Center, Minneapolis, MN, USA
- Department of Sociology, University of Minnesota, Minneapolis, MN, USA
| | - Pamela Herd
- McCourt School of Public Policy, Georgetown University, Washington, DC, USA
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13
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Guo J, Guo W, Zhang T, Zheng Y, Han B, Zhang Z, Liang N, Li Y, Shi Y, Zhang X, Nashun B. Gestational exposure to phenanthrene induces follicular atresia and endocrine dyscrasia in F1 adult female. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 232:113291. [PMID: 35158277 DOI: 10.1016/j.ecoenv.2022.113291] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 01/24/2022] [Accepted: 02/06/2022] [Indexed: 06/14/2023]
Abstract
Epidemiological investigations and animal studies demonstrate a significantly positive relationship between polycyclic aromatic hydrocarbons (PAHs) exposure and reproductive disorders. However, few researches are focused on the reproductive toxicity of low-molecular-weight PAHs (number of benzene ring ≤ 3) which occupy a large part of PAHs. Phenanthrene (Phe), a typical low-molecular-weight PAH, is one of the most abundant PAHs detected in foods. In the present study, oral treatment with Phe at a human exposure related level during gestation (60 μg/kg body weight every three days, six times in total) induced reproductive disorders in F1 adult female mice: the number of antral follicles (an immature stage of follicular development) were significantly increased, while the maturation of oocytes was inhibited and aggravated follicular atresia was observed; the serum levels of luteinizing hormone (LH), testosterone and estradiol were significantly reduced; the receptor of follicle-stimulating hormone (FSHR) and aromatase in the ovary were significantly upregulated; transcriptome analysis demonstrated that the phosphatidylinositol 3-kinase and protein kinase B (PI3K/Akt) signal pathway was upregulated, and the calcium signal pathway was disturbed, which probably accounts for the exacerbated atresia of the growing follicles and the excessive consumption of follicles. The reproductive toxicity of low-molecular-weight PAHs could not be neglected.
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Affiliation(s)
- Jiaojiao Guo
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China.
| | - Wei Guo
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Tong Zhang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yajie Zheng
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Bo Han
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Zixuan Zhang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Nan Liang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yi Li
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yunshu Shi
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Xu Zhang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Buhe Nashun
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China.
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14
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Lead (Pb) and neurodevelopment: A review on exposure and biomarkers of effect (BDNF, HDL) and susceptibility. Int J Hyg Environ Health 2021; 238:113855. [PMID: 34655857 DOI: 10.1016/j.ijheh.2021.113855] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 09/29/2021] [Accepted: 10/01/2021] [Indexed: 12/13/2022]
Abstract
Lead (Pb) is a ubiquitous environmental pollutant and a potent toxic compound. Humans are exposed to Pb through inhalation, ingestion, and skin contact via food, water, tobacco smoke, air, dust, and soil. Pb accumulates in bones, brain, liver and kidney. Fetal exposure occurs via transplacental transmission. The most critical health effects are developmental neurotoxicity in infants and cardiovascular effects and nephrotoxicity in adults. Pb exposure has been steadily decreasing over the past decades, but there are few recent exposure data from the general European population; moreover, no safe Pb limit has been set. Sensitive biomarkers of exposure, effect and susceptibility, that reliably and timely indicate Pb-associated toxicity are required to assess human exposure-health relationships in a situation of low to moderate exposure. Therefore, a systematic literature review based on PubMed entries published before July 2019 that addressed Pb exposure and biomarkers of effect and susceptibility, neurodevelopmental toxicity, epigenetic modifications, and transcriptomics was conducted. Finally included were 58 original papers on Pb exposure and 17 studies on biomarkers. The biomarkers that are linked to Pb exposure and neurodevelopment were grouped into effect biomarkers (serum brain-derived neurotrophic factor (BDNF) and serum/saliva cortisol), susceptibility markers (epigenetic markers and gene sequence variants) and other biomarkers (serum high-density lipoprotein (HDL), maternal iron (Fe) and calcium (Ca) status). Serum BDNF and plasma HDL are potential candidates to be further validated as effect markers for routine use in HBM studies of Pb, complemented by markers of Fe and Ca status to also address nutritional interactions related to neurodevelopmental disorders. For several markers, a causal relationship with Pb-induced neurodevelopmental toxicity is likely. Results on BDNF are discussed in relation to Adverse Outcome Pathway (AOP) 13 ("Chronic binding of antagonist to N-methyl-D-aspartate receptors (NMDARs) during brain development induces impairment of learning and memory abilities") of the AOP-Wiki. Further studies are needed to validate sensitive, reliable, and timely effect biomarkers, especially for low to moderate Pb exposure scenarios.
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15
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Khalid M, Hodjat M, Abdollahi M. Environmental Exposure to Heavy Metals Contributes to Diseases Via Deregulated Wnt Signaling Pathways. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2021; 20:370-382. [PMID: 34567167 PMCID: PMC8457726 DOI: 10.22037/ijpr.2021.114897.15089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Wnt signaling plays a critical role during embryogenesis and is responsible for regulating the homeostasis of the adult stem cells and cells fate via a multitude of signaling pathways and associated transcription factors, receptors, effectors, and inhibitors. For this review, published articles were searched from PubMed Central, Embase, Medline, and Google Scholar. The search terms were Wnt, canonical, noncanonical, signaling pathway, β-catenin, environment, and heavy metals. Published articles on Wnt signaling pathways and heavy metals as contributing factors for causing diseases via influencing Wnt signaling pathways were included. Wnt canonical or noncanonical signaling pathways are the key regulators of stem cell homeostasis that control many mechanisms. There is an adequate balance between β-catenin dependent and independent Wnt signaling pathways and remain highly conserved throughout different development stages. Environmental heavy metal exposure may cause either inhibition or overexpression of any component of Wnt signaling pathways such as Wnt protein, transcription factors, receptors, ligands, or transducers to impede normal cellular function via negatively affecting Wnt signaling pathways. Environmental exposure to heavy metals potentially contributes to diseases via deregulated Wnt signaling pathways.
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Affiliation(s)
- Madiha Khalid
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Mahshid Hodjat
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences (TUMS), Tehran, Iran.,Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Abdollahi
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences (TUMS), Tehran, Iran.,Department of Toxicology and Pharmacology, School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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16
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Shiek SS, Mani MS, Kabekkodu SP, Dsouza HS. Health repercussions of environmental exposure to lead: Methylation perspective. Toxicology 2021; 461:152927. [PMID: 34492314 DOI: 10.1016/j.tox.2021.152927] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 07/23/2021] [Accepted: 09/01/2021] [Indexed: 12/15/2022]
Abstract
Lead (Pb) exposure has been a major public health concern for a long time now due to its permanent adverse effects on the human body. The process of lead toxicity has still not been fully understood, but recent advances in Omics technology have enabled researchers to evaluate lead-mediated alterations at the epigenome-wide level. DNA methylation is one of the widely studied and well-understood epigenetic modifications. Pb has demonstrated its ability to induce not just acute deleterious health consequences but also alters the epi-genome such that the disease manifestation happens much later in life as supported by Barkers Hypothesis of the developmental origin of health and diseases. Furthermore, these alterations are passed on to the next generation. Based on previous in-vivo, in-vitro, and human studies, this review provides an insight into the role of Pb in the development of several human disorders.
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Affiliation(s)
- Sadiya Sadiq Shiek
- Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Monica Shirley Mani
- Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Shama Prasada Kabekkodu
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India.
| | - Herman S Dsouza
- Department of Radiation Biology and Toxicology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India.
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17
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Zhang T, Ru YF, Wu B, Dong H, Chen L, Zheng J, Li J, Wang X, Wang Z, Wang X, Shen X, Wu J, Qian J, Miao M, Gu Y, Shi H. Effects of low lead exposure on sperm quality and sperm DNA methylation in adult men. Cell Biosci 2021; 11:150. [PMID: 34344450 PMCID: PMC8335892 DOI: 10.1186/s13578-021-00665-7] [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: 01/14/2021] [Accepted: 07/20/2021] [Indexed: 11/26/2022] Open
Abstract
INSTRUCTION Lead (Pb) exposure is a risk factor for male infertility, but the epigenetic changes in sperm DNAattributable to lead exposure is poorly defined. METHODS In this study, we investigated whether low Pb exposure (< 10 µg/dL) affects the sperm quality. Blood, urine, and semen samples of 297 men of childbearing age were analyzed for all relevant parameters. Based on the blood Pb level (BLL), participants were allocated to RL (0-2.5 µg/dL), RM (2.5-5 µg/dL), and RH (5-10 µg/dL) groups. The 5-methylcytosine and 5-hydroxymethylcytosine patterns in the sperm DNA were identified using methylated DNA immunoprecipitation and hydroxymethylated DNA immunoprecipitation sequencing. RESULTS The non-progressive motility (NP) was significantly increased and associated with global hypomethylation of sperm DNA in the RH group compared with the RL group, indicating that aberrant sperm methylation due to low Pb exposure is possibly associated with reduced sperm motility. The hypomethylated promoter regions were primarily enriched in the calcium (Ca) homeostasis pathway. Further, the interaction between Ca and Pb was associated with sperm rapid progressive motility and asthenospermia risk, although no significant methylation abnormality was observed in those with BLL < 5 µg/dL. When BLL was > 5 µg/dL or when predicting NP, no significant Pb-Ca interaction was observed. DISCUSSION Overall, our results indicate that aberrant DNA methylation of the Ca homeostasis pathway, induced by low Pb exposure, is the potential cause for reduced sperm velocity.
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Affiliation(s)
- Tiancheng Zhang
- NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai, China
| | - Yan Fei Ru
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, 310024, Zhejiang, China
| | - Bin Wu
- NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai, China
| | - Haiyan Dong
- Shanghai Kelin Institute of clinical bioinformatics, Shanghai, China
| | - Liang Chen
- NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai, China
| | - Jufen Zheng
- NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai, China
| | - Jianhui Li
- NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai, China
| | - Xin Wang
- NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai, China
| | - Zhikai Wang
- NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai, China
| | - Xuemei Wang
- NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai, China
| | - Xiaorong Shen
- NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai, China
| | - Jun Wu
- NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai, China
| | - Jun Qian
- NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai, China.
| | - Maohua Miao
- NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai, China.
| | - Yihua Gu
- NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai, China.
| | - Huijuan Shi
- NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai, China
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18
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Aluko OM, Lawal SA, Ijomone OM, Aschner M. Perturbed MAPK signaling in ASD: Impact of metal neurotoxicity. CURRENT OPINION IN TOXICOLOGY 2021; 26:1-7. [PMID: 34263087 DOI: 10.1016/j.cotox.2021.03.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The mitogen-activated protein kinase (MAPK) pathways are intracellular signaling pathways necessary for regulating various physiological processes, including neurodevelopment. The developing brain is vulnerable to toxic substances, and metals, such as lead, mercury, nickel, manganese, and others, have been proven to induce disturbances in the MAPK signaling pathway. Since a well-regulated MAPK is necessary for normal neurodevelopment, perturbation of the MAPK pathway results in neurodevelopmental disorders, including autism spectrum disorder (ASD). ASD affects brain parts responsible for communication, cognition, social interaction, and other patterned behaviors. Several studies have addressed the role of metals in the etiopathogenesis of ASD. Here, we briefly review the MAPK signaling pathway and its role in neurodevelopment. Furthermore, we highlight the role of metal toxicity in the development of ASD and how perturbed MAPK signaling may result in ASD.
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Affiliation(s)
- Oritoke M Aluko
- The Neuro- Lab, School of Health and Health Technology, Federal University of Technology, Akure, Nigeria.,Department of Physiology, School of Health and Health Technology, Federal University of Technology, Akure, Nigeria
| | - Saheed A Lawal
- Department of Physiology, School of Health and Health Technology, Federal University of Technology, Akure, Nigeria
| | - Omamuyovwi M Ijomone
- The Neuro- Lab, School of Health and Health Technology, Federal University of Technology, Akure, Nigeria.,Department of Human Anatomy, School of Health and Health Technology, Federal University of Technology, Akure, Nigeria
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA
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19
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Devóz PP, Reis MBD, Gomes WR, Maraslis FT, Ribeiro DL, Antunes LMG, Batista BL, Grotto D, Reis RM, Barbosa F, Barcelos GRM. Adaptive epigenetic response of glutathione (GSH)-related genes against lead (Pb)-induced toxicity, in individuals chronically exposed to the metal. CHEMOSPHERE 2021; 269:128758. [PMID: 33143897 DOI: 10.1016/j.chemosphere.2020.128758] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 10/15/2020] [Accepted: 10/25/2020] [Indexed: 06/11/2023]
Abstract
It is well known that one of the most outstanding adverse effects related to lead (Pb) exposure is oxidative stress; moreover, recent findings suggest that disturbances of the redox status of cells are associated with epigenetic responses, and metabolism of glutathione (GSH) plays an important role in this process. This study aimed to assess Pb exposure on % methylation of GSH-related genes' promoter regions (%CH3-CpG) and their influence on biomarkers of oxidative stress, in workers exposed to the metal. One hundred nine male workers participated in the study; ICP-MS determined blood lead levels (BLL); biochemical parameters related to redox status, named GSH, glutathione peroxidase (GPX) and glutathione-S-transferase (GST) were quantified by UV/Vis spectrophotometry. Determination of %CH3-CpG of genes GCLC, GPX1, GSR, and GSTP1 were done by pyrosequencing. Inverse associations were seen between BLL and %CH3-CpG-GCLC, and %CH3-CpG-GSTP1. Moreover, metal exposure did not impact GSH, GPX, and GST; however, negative associations were observed between %CH3-CpG-GPX1 and %CH3-CpG-GSTP1, and the activities of GPX and GST, respectively. Taken together, our results give further evidence about adaptive epigenetic response to avoid oxidative damage induced by Pb exposure, allowing a better understanding of the molecular mechanisms related to the metal toxicity.
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Affiliation(s)
- Paula Pícoli Devóz
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Do Café S/n, CEP 14040-903, Ribeirão Preto, SP, Brazil
| | - Mariana Bisarro Dos Reis
- Molecular Oncology Research Center, Barretos Cancer Hospital, Rua Antenor Duarte Villela 1331, CEP 14784-400, Barretos, SP, Brazil
| | - Willian Robert Gomes
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Do Café S/n, CEP 14040-903, Ribeirão Preto, SP, Brazil
| | - Flora Troina Maraslis
- Department of Biosciences, Institute of Health and Society, Federal University of São Paulo, Avenida Ana Costa 95, CEP 11060-001, Santos, SP, Brazil
| | - Diego Luis Ribeiro
- Departament of Genetics, Ribeirão Preto Medical School, University of São Paulo, Avenida dos Bandeirantes 3900, CEP 14040-901, Ribeirão Preto, SP, Brazil
| | - Lusânia Maria Greggi Antunes
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Do Café S/n, CEP 14040-903, Ribeirão Preto, SP, Brazil
| | - Bruno Lemos Batista
- Center of Natural and Human Sciences, Federal University of ABC, Avenida Dos Estados 5001, CEP 09210-580, Santo André, SP, Brazil
| | - Denise Grotto
- University of Sorocaba, Rodovia Raposo Tavares km 92.5, CEP 18023-000, Sorocaba, SP, Brazil
| | - Rui Manuel Reis
- Molecular Oncology Research Center, Barretos Cancer Hospital, Rua Antenor Duarte Villela 1331, CEP 14784-400, Barretos, SP, Brazil; Life and Health Sciences Research Institute, School of Medicine, University of Minho, Gualtar Campus, 4710-057, Braga, Portugal; ICVS/3B's-PT Government Associate Laboratory, Gualtar Campus, 4710-057, Braga, Portugal
| | - Fernando Barbosa
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Do Café S/n, CEP 14040-903, Ribeirão Preto, SP, Brazil
| | - Gustavo Rafael Mazzaron Barcelos
- Department of Biosciences, Institute of Health and Society, Federal University of São Paulo, Avenida Ana Costa 95, CEP 11060-001, Santos, SP, Brazil.
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20
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Abstract
Lead (Pb2+) is a non-essential metal with numerous industrial applications that have led to ts ubiquity in the environment. Thus, not only occupational-exposed individuals' health is compromised, but also that of the general population and in particular children. Notably, although the central nervous system is particularly susceptible to Pb2+, other systems are affected as well. The present study focuses on molecular mechanisms that underlie the effects that arise from the presence of Pb2+ in situ in the brain, and the possible toxic effects that follows. As the brain barriers represent the first target of systemic Pb2+, mechanisms of Pb2+ entry into the brain are discussed, followed by a detailed discussion on neurotoxic mechanisms, with special emphasis on theories of ion mimicry, mitochondrial dysfunction, redox imbalance, and neuroinflammation. Most importantly, the confluence and crosstalk between these events is combined into a cogent mechanism of toxicity, by intertwining recent and old evidences from humans, in vitro cell culture and experimental animals. Finally, pharmacological interventions, including chelators, antioxidants substances, anti-inflammatory drugs, or their combination are reviewed as integrated approaches to ameliorate Pb2+ harmful effects in both developing or adult organisms.
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Affiliation(s)
- Miriam B. Virgolini
- IFEC CONICET. IFEC-CONICET. Departamento de Farmacología, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba. Haya de la Torre y Medina Allende, Ciudad Universitaria, 5016, Córdoba, Argentina
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, USA and IM Sechenov First Moscow State Medical University (Sechenov University), 119146, Moscow, Russia
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21
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Malekirad AA, Hassani S, Abdollahi M. Oxidative stress and copper smelter workers. Toxicology 2021. [DOI: 10.1016/b978-0-12-819092-0.00013-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Rahimifard M, Baeeri M, Bahadar H, Moini-Nodeh S, Khalid M, Haghi-Aminjan H, Mohammadian H, Abdollahi M. Therapeutic Effects of Gallic Acid in Regulating Senescence and Diabetes; an In Vitro Study. Molecules 2020; 25:molecules25245875. [PMID: 33322612 PMCID: PMC7763304 DOI: 10.3390/molecules25245875] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 12/07/2020] [Accepted: 12/09/2020] [Indexed: 12/14/2022] Open
Abstract
Gallic acid (GA), a plant-derived ubiquitous secondary polyphenol metabolite, can be a useful dietary supplement. This in vitro study’s primary purpose was to assess the anti-aging properties of GA using rat embryonic fibroblast (REF) cells, antidiabetic effects via pancreatic islet cells, and finally, elucidating the molecular mechanisms of this natural compound. REF and islet cells were isolated from fetuses and pancreas of rats, respectively. Then, several senescence-associated molecular and biochemical parameters, along with antidiabetic markers, were investigated. GA caused a significant decrease in the β-galactosidase activity and reduced inflammatory cytokines and oxidative stress markers in REF cells. GA reduced the G0/G1 phase in senescent REF cells that led cells to G2/M. Besides, GA improved the function of the β cells. Flow cytometry and spectrophotometric analysis showed that it reduces apoptosis via inhibiting caspase-9 activity. Taken together, based on the present findings, this polyphenol metabolite at low doses regulates different pathways of senescence and diabetes through its antioxidative stress potential and modulation of mitochondrial complexes activities.
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Affiliation(s)
- Mahban Rahimifard
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, 1417613151 Tehran, Iran; (M.R.); (S.M.-N.); (M.K.); (H.M.)
| | - Maryam Baeeri
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, 1417613151 Tehran, Iran; (M.R.); (S.M.-N.); (M.K.); (H.M.)
- Correspondence: (M.B.); (M.A.)
| | - Haji Bahadar
- Institute of Paramedical Sciences, Khyber Medical University, 25120 Peshawar, Pakistan;
| | - Shermineh Moini-Nodeh
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, 1417613151 Tehran, Iran; (M.R.); (S.M.-N.); (M.K.); (H.M.)
| | - Madiha Khalid
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, 1417613151 Tehran, Iran; (M.R.); (S.M.-N.); (M.K.); (H.M.)
| | - Hamed Haghi-Aminjan
- Pharmaceutical Sciences Research Center, Ardabil University of Medical Sciences, 5618953141 Ardabil, Iran;
| | - Hossein Mohammadian
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, 1417613151 Tehran, Iran; (M.R.); (S.M.-N.); (M.K.); (H.M.)
- Department of Toxicology and Pharmacology, School of Pharmacy, Tehran University of Medical Sciences, 1417614411 Tehran, Iran
| | - Mohammad Abdollahi
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, 1417613151 Tehran, Iran; (M.R.); (S.M.-N.); (M.K.); (H.M.)
- Department of Toxicology and Pharmacology, School of Pharmacy, Tehran University of Medical Sciences, 1417614411 Tehran, Iran
- Correspondence: (M.B.); (M.A.)
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23
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Ge J, Yang H, Lu X, Wang S, Zhao Y, Huang J, Xi Z, Zhang L, Li R. Combined exposure to formaldehyde and PM 2.5: Hematopoietic toxicity and molecular mechanism in mice. ENVIRONMENT INTERNATIONAL 2020; 144:106050. [PMID: 32861163 PMCID: PMC7839661 DOI: 10.1016/j.envint.2020.106050] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 08/08/2020] [Accepted: 08/08/2020] [Indexed: 05/24/2023]
Abstract
PM2.5 and formaldehyde (FA) are major outdoor and indoor air pollutants in China, respectively, and both are known to be harmful to human health and to be carcinogenic. Of all the known chronic health effects, leukaemia is one of the most serious health risks associated with these two pollutants. To explore the influence and underlying mechanisms of exposure to formaldehyde and PM2.5 on hematopoietic toxicity, we systematically studied the toxicity induced in hematopoietic organs: bone marrow (BM); spleen; and myeloid progenitor cells (MPCs). Male Balb/c mice were exposed to: PM2.5 (20, 160 μg/kg·d) at a dose of 40 μL per mouse or formaldehyde (0.5, 3.0 mg/m3) for 8 h per day for 2 weeks or co-exposed to formaldehyde and PM2.5 (20 μg/kg·d PM2.5 + 0.5 mg/m3 FA, 20 μg/kg·d PM2.5 + 3 mg/m3 FA, 160 μg/kg·d PM2.5 + 0.5 mg/m3 FA, 160 μg/kg·d PM2.5 + 3 mg/m3 FA) for 2 weeks. Similar toxic effects were found in the formaldehyde-only and PM2.5-only groups, including significant decrease of blood cells and MPCs, along with decreased expression of hematopoietic growth factors. In addition, individual exposure of formaldehyde or PM2.5 increased oxidative stress, DNA damage and immune system disorder by destroying the balance of Th1/Th2, and Treg/Th17. DNA repair was markedly inhibited by deregulating the mammalian target of rapamycin (mTOR) pathway. Combined exposure to PM2.5 and formaldehyde led to more severe effects. Administration of Vitamin E (VE) was shown to attenuate these effects. In conclusion, our findings suggested that PM2.5 and formaldehyde may induce hematopoietic toxicity by reducing the expression of hematopoietic growth factors, increasing oxidative stress and DNA damage, activating the 'immune imbalance' pathway and suppressing the DNA-repair related mTOR pathway. The hematopoietic toxicity induced by combined exposure of PM2.5 and formaldehyde might provide further insights into the increased incidence of hematological diseases, including human myeloid leukaemia.
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Affiliation(s)
- Jing Ge
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China; College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Honglian Yang
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China
| | - Xianxian Lu
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China
| | - Shenqi Wang
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yun Zhao
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China
| | - Jiawei Huang
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China
| | - Zhuge Xi
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China
| | - Luoping Zhang
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA 94720, USA
| | - Rui Li
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China.
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24
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Khan F, Hodjat M, Rahimifard M, Nigjeh MN, Azizi M, Baeeri M, Bayrami Z, Gholami M, Hassani S, Abdollahi M. Assessment of arsenic-induced modifications in the DNA methylation of insulin-related genes in rat pancreatic islets. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 201:110802. [PMID: 32531573 DOI: 10.1016/j.ecoenv.2020.110802] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 05/11/2020] [Accepted: 05/23/2020] [Indexed: 06/11/2023]
Abstract
Extended exposure to inorganic arsenic through contaminated drinking water has been linked with increased incidence of diabetes mellitus. The most common exposure occurs through the consumption of contaminated drinking water mainly through geogenic sources of inorganic arsenic. Epigenetic modifications are important mechanisms through which environmental pollutants could exert their toxic effects. Bisulfite sequencing polymerase chain reaction method followed by Sanger sequencing was performed for DNA methylation analysis. Our results showed that sodium arsenite treatment significantly reduced insulin secretion in pancreatic islets. It was revealed that the methylation of glucose transporter 2 (Glut2) gene was changed at two cytosine-phosphate-guanine (CpG) sites (-1743, -1734) in the promoter region of the sodium arsenite-treated group comparing to the control. No changes were observed in the methylation status of peroxisome proliferator-activated receptor-gamma (PPARγ), pancreatic and duodenal homeobox 1 (Pdx1) and insulin 2 (Ins2) CpG sites in the targeted regions. Measuring the gene expression level showed increase in Glut2 expression, while the expression of insulin (INS) and Pdx1 were significantly affected by sodium arsenite treatment. This study revealed that exposure to sodium arsenite changed the DNA methylation pattern of Glut2, a key transporter of glucose entry into the pancreatic beta cells (β-cells). Our data suggested possible epigenetic-mediated toxicity mechanism for arsenite-induced β-cells dysfunction. Further studies are needed to dissect the precise epigenetic modulatory activity of sodium arsenite that affect the biogenesis of insulin.
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Affiliation(s)
- Fazlullah Khan
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), and Department of Toxicology and Pharmacology, School of Pharmacy, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Mahshid Hodjat
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahban Rahimifard
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), and Department of Toxicology and Pharmacology, School of Pharmacy, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Mona Navaei Nigjeh
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), and Department of Toxicology and Pharmacology, School of Pharmacy, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Masoumeh Azizi
- Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Maryam Baeeri
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), and Department of Toxicology and Pharmacology, School of Pharmacy, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Zahra Bayrami
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), and Department of Toxicology and Pharmacology, School of Pharmacy, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Mahdi Gholami
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), and Department of Toxicology and Pharmacology, School of Pharmacy, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Shokoufeh Hassani
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), and Department of Toxicology and Pharmacology, School of Pharmacy, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Mohammad Abdollahi
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), and Department of Toxicology and Pharmacology, School of Pharmacy, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
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25
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Hydrochemical composition and potentially toxic elements in the Kyrgyzstan portion of the transboundary Chu-Talas river basin, Central Asia. Sci Rep 2020; 10:14972. [PMID: 32917939 PMCID: PMC7486924 DOI: 10.1038/s41598-020-71880-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 08/24/2020] [Indexed: 11/08/2022] Open
Abstract
Water chemistry and the assessment of health risks of potentially toxic elements have important research significance for water resource utilization and human health. However, not enough attention has been paid to the study of surface water environments in many parts of Central Asia. Sixty water samples were collected from the transboundary river basin of Chu-Talas during periods of high and low river flow, and the hydrochemical composition, including major ions and potentially toxic elements (Zn, Pb, Cu, Cr, and As), was used to determine the status of irrigation suitability and risks to human health. The results suggest that major ions in river water throughout the entire basin are mainly affected by water-rock interactions, resulting in the dissolution and weathering of carbonate and silicate rocks. The concentrations of major ions change to some extent with different hydrological periods; however, the hydrochemical type of calcium carbonate remains unchanged. Based on the water-quality assessment, river water in the basin is classified as excellent/good for irrigation. The relationship between potentially toxic elements (Zn, Pb, Cu, Cr, and As) and major ions is basically the same between periods of high and low river flow. There are significant differences between the sources of potentially toxic elements (Zn, Pb, Cu, and As) and major ions; however, Cr may share the same rock source as major ions. The risk assessment revealed low non-carcinogenic and carcinogenic risks for human health; however, the maximum carcinogenic risk for As exceeded the allowable value, which requires further consideration. These results provide a scientific basis for the management of agricultural irrigation uses and also infill existing gaps regarding the hydrochemical composition in the Chu-Talas river basin, Central Asia.
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Khalid M, Abdollahi M. Role of lead in dental diseases. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART C, TOXICOLOGY AND CARCINOGENESIS 2020; 38:329-361. [PMID: 33382012 DOI: 10.1080/26896583.2020.1834313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Lead (Pb) is ubiquitous in our environment and causes many pathophysiological health effects, including dental diseases. Dental Pb levels are considered good biological indicators of environmental and occupational Pb exposure. Pb in blood and saliva causes imbalances in the growth of oral microflora. The pH of saliva decreases, interferes with and interacts with bone-seeking elements, changes oral inflammatory parameters, generates reactive oxygen species, causes oxidative damage, and delays the mineralization process, leading to dental diseases. Pb's dental diseases include periodontitis, enamel lesions and defects, fluorosis, Burton's line, and tooth loss. Environmental and physiological factors, including age, gender, tooth type and position, pregnancy and lactation, eating and drinking habits, smoking habits, and exposures from Pb-contaminated residential and occupational areas, affect the distribution of Pb in blood, bone, and saliva, which contributes to dental diseases. However, living and working in Pb free areas can prevent environmental and occupational Pb exposure. Healthy lifestyles and eating habits, prohibiting smoking and alcohol drinking, further help prevent Pb exposure. Also, the fluoridation of water, salt, and milk provide nutritional supplements of trace elements, which can help prevent teeth from absorbing Pb from the environment, thereby reducing the risk of dental diseases.
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Affiliation(s)
- Madiha Khalid
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS) and Department of Toxicology and Pharmacology, School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Abdollahi
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS) and Department of Toxicology and Pharmacology, School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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