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Wang R, Lin Y, Sun Y, Zhao B, Chen L. Insight into the molecular recognition of human and polar bear pregnane X receptor by three organic pollutants using molecular docking and molecular dynamics simulations. ENVIRONMENT INTERNATIONAL 2024; 190:108926. [PMID: 39098090 DOI: 10.1016/j.envint.2024.108926] [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: 04/17/2024] [Revised: 07/30/2024] [Accepted: 07/30/2024] [Indexed: 08/06/2024]
Abstract
Pregnane X receptor (PXR) is a heterologous biosensor that is involved in the metabolic pathway of environmental pollutants, regulating the transcription of genes involved in biotransformation. There are significant differences in the selectivity and specificity of organic pollutants (OPs) toward polar bear PXR (pbPXR) and human PXR (hPXR), but the detailed dynamical characteristics of their interactions are unclear. Homology Modeling, molecular docking, molecular dynamics simulation, and free energy calculation were used to analyze the recognition of pbPXR and hPXR by three OPs: BPA, chlordane and toxaphene. Comparing interaction patterns along with binding free energy of pbPXR and hPXR with these three OPs revealed that although pbPXR and hPXR interact similar with these three OPs, these OPs have different effects on the internal dynamics of pbPXR and hPXR. This results in significant alterations in the interaction of key residues near Leu209, Met243, Phe288, Met323, and His407 with OPs, thereby influencing their binding energy. Non-polar interactions, especially van der Waals interactions, were found to be the dominating factors in interacting of these OPs with PXRs. The region surrounding these key residues facilitates hydrophobic contacts with PXR, which are crucial for the selective activation of PXRs in different species by these three OPs. These findings are of significant guidance in understanding the impacts of environmental endocrine disruptors on different organisms.
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Affiliation(s)
- Ruige Wang
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, 161006, China
| | - Yaqi Lin
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, 161006, China
| | - Ying Sun
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, 161006, China
| | - Bing Zhao
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, 161006, China; Heilongjiang Provincial Key Laboratory of Surface Active Agent and Auxiliary, Qiqihar University, Qiqihar, 161006, China
| | - Lin Chen
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, 161006, China.
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Mao X, Liu Y, Wei Y, Li X, Liu Y, Su G, Wang X, Jia J, Yan B. Threats of per- and poly-fluoroalkyl pollutants to susceptible populations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 921:171188. [PMID: 38395163 DOI: 10.1016/j.scitotenv.2024.171188] [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: 10/18/2023] [Revised: 01/29/2024] [Accepted: 02/20/2024] [Indexed: 02/25/2024]
Abstract
Environmental exposure to per- and poly-fluoroalkyl substances (PFAS) has raised significant global health concerns due to potential hazards in healthy adults. However, the impact of PFAS on susceptible populations, including pregnant individuals, newborns, the older people, and those with underlying health conditions, has been overlooked. These susceptible groups often have physiological changes that make them less resilient to the same exposures. Consequently, there is an urgent need for a comprehensive understanding of the health risks posed by PFAS exposure to these populations. In this review, we delve into the potential health risks of PFAS exposure in these susceptible populations. Equally important, we also examine and discuss the molecular mechanisms that underlie this susceptibility. These mechanisms include the induction of oxidative stress, disruption of the immune system, impairment of cellular metabolism, and alterations in gut microbiota, all of which contribute to the enhanced toxicity of PFAS in susceptible populations. Finally, we address the primary research challenges and unresolved issues that require further investigation. This discussion aims to foster research for a better understanding of how PFAS affect susceptible populations and to pave the way for strategies to minimize their adverse effects.
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Affiliation(s)
- Xuan Mao
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Yujiao Liu
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Yongyi Wei
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Xiaodi Li
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Yin Liu
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
| | - Gaoxing Su
- School of Pharmacy, Nantong University, Nantong 226019, China
| | - Xiaohong Wang
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China.
| | - Jianbo Jia
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China.
| | - Bing Yan
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
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Pérez-Carrascosa FM, Barrios-Rodríguez R, Gómez-Peña C, Salcedo-Bellido I, Velasco-García ME, Jiménez-Moleón JJ, García-Ruiz A, Navarro-Espigares JL, Requena P, Muñoz-Sánchez C, Arrebola JP. Public healthcare costs associated with long-term exposure to mixtures of persistent organic pollutants in two areas of Southern Spain: A longitudinal analysis. ENVIRONMENTAL RESEARCH 2022; 213:113609. [PMID: 35667403 DOI: 10.1016/j.envres.2022.113609] [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: 03/04/2022] [Revised: 05/24/2022] [Accepted: 06/01/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Polychlorinated biphenyls and organochlorine pesticides are persistent organic pollutants (POPs) that had been banned or restricted in many countries, including Spain. However, their ubiquity still poses environmental and human health threats. OBJECTIVE To longitudinally explore public healthcare costs associated with long-term exposure to a mixture of 8 POPs in a cohort of residents of two areas of Granada Province, Southern Spain. METHODS Longitudinal study in a subsample (n = 385) of GraMo adult cohort. Exposure assessment was performed by analyzing adipose tissue POP concentrations at recruitment. Average primary care (APC) and average hospital care (AHC) expenditures of each participant over 14 years were estimated using the data from their medical records. Data analyses were performed by robust MM regression, weighted quantile sum regression (WQS) and G-computation analysis. RESULTS In the adjusted robust MM models for APC, most POPs showed positive beta coefficients, being Hexachlorobenzene (HCB) significantly associated (β: 1.87; 95% Confidence interval (95%CI): 0.17, 3.57). The magnitude of this association increased (β: 3.72; 95%CI: 0.80, 6.64) when the analyses were restricted to semi-rural residents, where β-HCH was also marginally-significantly associated to APC (β: 3.40; 95%CI: -0.10, 6.90). WQS revealed a positive but non-significant mixture association with APC (β: 0.14; 95%CI: -0.06, 0.34), mainly accounted for by β-HCH (54%) and HCB (43%), that was borderline-significant in the semi-rural residents (β: 0.23; 95%CI: -0.01, 0.48). No significant results were observed in G-Computation analyses. CONCLUSION Long-term exposure to POP mixtures might represent a modifiable factor increasing healthcare costs, thus affecting the efficiency of the healthcare systems. However, and owing the complexity of the potential causal pathways and the limitations of the present study, further research is warranted to fully elucidate ascertain whether interventions to reduce human exposure should be considered in healthcare policies.
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Affiliation(s)
- Francisco Miguel Pérez-Carrascosa
- Universidad de Granada, Departamento de Medicina Preventiva y Salud Pública, Granada, Spain; Instituto de Investigación Biosanitaria IBS.GRANADA, Spain; Servicio de Oncología Radioterápica, Hospital Universitario Virgen de Las Nieves, Granada, Spain
| | - Rocío Barrios-Rodríguez
- Universidad de Granada, Departamento de Medicina Preventiva y Salud Pública, Granada, Spain; Instituto de Investigación Biosanitaria IBS.GRANADA, Spain; CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Celia Gómez-Peña
- Instituto de Investigación Biosanitaria IBS.GRANADA, Spain; Servicio de Farmacia Hospitalaria, Hospital Universitario San Cecilio, Granada, Spain
| | - Inmaculada Salcedo-Bellido
- Universidad de Granada, Departamento de Medicina Preventiva y Salud Pública, Granada, Spain; Instituto de Investigación Biosanitaria IBS.GRANADA, Spain; CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | | | - José Juan Jiménez-Moleón
- Universidad de Granada, Departamento de Medicina Preventiva y Salud Pública, Granada, Spain; Instituto de Investigación Biosanitaria IBS.GRANADA, Spain; CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Antonio García-Ruiz
- Departamento de Farmacología y Pediatría, Universidad de Málaga, Málaga, Spain; Instituto de Investigación Biomédica de Málaga (IBIMA), Málaga, Spain
| | - José Luis Navarro-Espigares
- Universidad de Granada, Departamento de Economía Internacional y de España, Granada, Spain; Dirección Económica y Servicios Generales, Hospital Universitario Virgen de Las Nieves, Granada, Spain
| | - Pilar Requena
- Universidad de Granada, Departamento de Medicina Preventiva y Salud Pública, Granada, Spain; Instituto de Investigación Biosanitaria IBS.GRANADA, Spain; CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Carmen Muñoz-Sánchez
- Unidad de Tecnologías de La Información y Comunicaciones, Hospital Universitario San Cecilio, Granada, Spain
| | - Juan Pedro Arrebola
- Universidad de Granada, Departamento de Medicina Preventiva y Salud Pública, Granada, Spain; Instituto de Investigación Biosanitaria IBS.GRANADA, Spain; CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain.
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Negrete-Bolagay D, Zamora-Ledezma C, Chuya-Sumba C, De Sousa FB, Whitehead D, Alexis F, Guerrero VH. Persistent organic pollutants: The trade-off between potential risks and sustainable remediation methods. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 300:113737. [PMID: 34536739 DOI: 10.1016/j.jenvman.2021.113737] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 06/13/2023]
Abstract
Persistent Organic Pollutants (POPs) have become a very serious issue for the environment because of their toxicity, resistance to conventional degradation mechanisms, and capacity to bioconcentrate, bioaccumulate and biomagnify. In this review article, the safety, regulatory, and remediation aspects of POPs including aromatic, chlorinated, pesticides, brominated, and fluorinated compounds, are discussed. Industrial and agricultural activities are identified as the main sources of these harmful chemicals, which are released to air, soil and water, impacting on social and economic development of society at a global scale. The main types of POPs are presented, illustrating their effects on wildlife and human beings, as well as the ways in which they contaminate the food chain. Some of the most promising and innovative technologies developed for the removal of POPs from water are discussed, contrasting their advantages and disadvantages with those of more conventional treatment processes. The promising methods presented in this work include bioremediation, advanced oxidation, ionizing radiation, and nanotechnology. Finally, some alternatives to define more efficient approaches to overcome the impacts that POPs cause in the hydric sources are pointed out. These alternatives include the formulation of policies, regulations and custom-made legislation for controlling the use of these pollutants.
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Affiliation(s)
- Daniela Negrete-Bolagay
- School of Biological Sciences and Engineering, Yachay Tech University, 100119, Urcuquí, Ecuador.
| | - Camilo Zamora-Ledezma
- Tissue Regeneration and Repair: Orthobiology, Biomaterials & Tissue Engineering Research Group, UCAM - Universidad Católica de Murcia, Avda. Los Jerónimos 135, Guadalupe, 30107, Murcia, Spain.
| | - Cristina Chuya-Sumba
- School of Biological Sciences and Engineering, Yachay Tech University, 100119, Urcuquí, Ecuador.
| | - Frederico B De Sousa
- Laboratório de Sistemas Poliméricos e Supramoleculares, Physics and Chemistry Institute, Federal University of Itajubá, 37500-903, Itajubá, Brazil.
| | - Daniel Whitehead
- Department of Chemistry, Clemson University, Clemson, SC, 29634, USA.
| | - Frank Alexis
- School of Biological Sciences and Engineering, Yachay Tech University, 100119, Urcuquí, Ecuador.
| | - Victor H Guerrero
- Department of Materials, Escuela Politécnica Nacional, Ladrón de Guevara E11-253, Quito, 170525, Ecuador.
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Xie W, Song C, Ren W, Zhang J, Chen L, Sun J. Reduction-oxidation series coupling degradation of chlorophenols in Pd-Catalytic Electro-Fenton system. CHEMOSPHERE 2021; 274:129654. [PMID: 33545583 DOI: 10.1016/j.chemosphere.2021.129654] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 12/28/2020] [Accepted: 01/13/2021] [Indexed: 06/12/2023]
Abstract
Organochlorine pesticides are widespread in soils, sediments and even in groundwater, causing great concern to human health because of its toxicity and carcinogenic effects. The remarkable mineralization and lowered toxicity are particularly important during the removal of organochlorine pesticides. In this study, Pd/CeO2 was prepared and employed as a bifunctional catalyst, to construct the reduction-oxidation series coupling Electro-Fenton (EF) system. The removal of chlorophenols (CPs) reached over 95% within 10 min at pH 3.0 and a current density of 25 mA/cm2 in Pd/CeO2-EF system. The second-order rate constant of CPs degradation was 10.28 L mmol-1min-1 in Pd/CeO2-EF system, which was 29 times as fast as the sum of electrolysis with Pd/CeO2 (0.24 L mmol-1min-1) and EF (0.11 L mmol-1min-1). Dehydrochlorination by Pd [H] contributed to the removal of CPs in Pd/CeO2-EF system. The generated reactive oxygen species, mainly OH was also confirmed by ESR to contribute to the removal of CPs. The reduction-oxidation series coupling degradation of CPs in Pd/CeO2-EF system increased the TOC removal to 70% in 360 min. The analysis of intermediate products further revealed the reductive and oxidative products in Pd/CeO2-EF. Moreover, the system of Pd/CeO2-EF exhibited an excellent performance treatment for CPs in actual groundwater. This study provides a new stratagem to eliminate organochlorine pesticides in groundwater environments rapidly and thoroughly.
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Affiliation(s)
- Wenjing Xie
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Hubei Province, PR China; College of Resource and Environmental Science, South-Central University for Nationalities, Wuhan, 430074, PR China
| | - Chencheng Song
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Hubei Province, PR China; College of Resource and Environmental Science, South-Central University for Nationalities, Wuhan, 430074, PR China
| | - Wei Ren
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Hubei Province, PR China; College of Resource and Environmental Science, South-Central University for Nationalities, Wuhan, 430074, PR China
| | - Jingyi Zhang
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Hubei Province, PR China; College of Resource and Environmental Science, South-Central University for Nationalities, Wuhan, 430074, PR China
| | - Lei Chen
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Hubei Province, PR China; College of Resource and Environmental Science, South-Central University for Nationalities, Wuhan, 430074, PR China
| | - Jie Sun
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Hubei Province, PR China; College of Resource and Environmental Science, South-Central University for Nationalities, Wuhan, 430074, PR China.
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