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Danforth CG, Portier C, Ensor KB, Hopkins L, Evans B, Quist AJL, McGraw KE, Craft E. Development and demonstration of a data visualization platform of short-term guidelines for ambient air levels of benzene during disaster response in Houston, Texas. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2024; 20:533-546. [PMID: 37462252 DOI: 10.1002/ieam.4814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 07/07/2023] [Accepted: 07/12/2023] [Indexed: 08/12/2023]
Abstract
Industrial disasters have caused hazardous air pollution and public health impacts. Response officials have developed limited exposure guidelines to direct them during the event; often, guidelines are outdated and may not represent relevant elevated-exposure periods. The 2019 Intercontinental Terminals Company (ITC) fire in Houston, Texas led to large-scale releases of benzene and presented a public health threat. This incident highlights the need for effective response and nimble, rapid public health communication. We developed a data-driven visualization tool to store, display, and interpret ambient benzene concentrations to assist health officials during environmental emergencies. Guidance values to interpret risk from acute exposure to benzene were updated using recent literature that also considers exposure periodicity. The visualization platform can process data from different sampling instruments and air monitors automatically, and displays information publicly in real time, along with the associated risk information and action recommendations. The protocol was validated by applying it retrospectively to the ITC event. The new guidance values are 6-30 times lower than those derived by the Texas regulatory agency. Fixed-site monitoring data, assessed using the protocol and revised thresholds, indicated that eight shelter-in-place and 17 air-quality alerts may have been considered. At least one of these shelter-in-place alerts corresponded to prolonged, elevated benzene concentrations (~1000 ppb). This new tool addresses essential gaps in the timely communication of air pollution measurements, provides context to understand potential health risks from exposure to benzene, and provides a clear protocol for local officials in responding to industrial air releases of benzene. Integr Environ Assess Manag 2024;20:533-546. © 2023 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).
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Affiliation(s)
| | | | - Kathy B Ensor
- George R. Brown School of Engineering, Rice University, Houston, Texas, USA
| | | | - Bryan Evans
- Kinder Institute for Urban Research, Rice University, Houston, Texas, USA
| | - Arbor J L Quist
- Department of Population and Public Health Sciences, University of Southern California, Los Angeles, California, USA
| | - Katlyn E McGraw
- Environmental Health Sciences Department, Columbia University Mailman School of Public Health, New York, New York, USA
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Sandoval C, Calle Y, Godoy K, Farías J. An Updated Overview of the Role of CYP450 during Xenobiotic Metabolization in Regulating the Acute Myeloid Leukemia Microenvironment. Int J Mol Sci 2023; 24:ijms24076031. [PMID: 37047003 PMCID: PMC10094375 DOI: 10.3390/ijms24076031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/08/2023] [Accepted: 03/16/2023] [Indexed: 04/14/2023] Open
Abstract
Oxidative stress is associated with several acute and chronic disorders, including hematological malignancies such as acute myeloid leukemia, the most prevalent acute leukemia in adults. Xenobiotics are usually harmless compounds that may be detrimental, such as pharmaceuticals, environmental pollutants, cosmetics, and even food additives. The storage of xenobiotics can serve as a defense mechanism or a means of bioaccumulation, leading to adverse effects. During the absorption, metabolism, and cellular excretion of xenobiotics, three steps may be distinguished: (i) inflow by transporter enzymes, (ii) phases I and II, and (iii) phase III. Phase I enzymes, such as those in the cytochrome P450 superfamily, catalyze the conversion of xenobiotics into more polar compounds, contributing to an elevated acute myeloid leukemia risk. Furthermore, genetic polymorphism influences the variability and susceptibility of related myeloid neoplasms, infant leukemias associated with mixed-lineage leukemia (MLL) gene rearrangements, and a subset of de novo acute myeloid leukemia. Recent research has shown a sustained interest in determining the regulators of cytochrome P450, family 2, subfamily E, member 1 (CYP2E1) expression and activity as an emerging field that requires further investigation in acute myeloid leukemia evolution. Therefore, this review suggests that CYP2E1 and its mutations can be a therapeutic or diagnostic target in acute myeloid leukemia.
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Affiliation(s)
- Cristian Sandoval
- Escuela de Tecnología Médica, Facultad de Salud, Universidad Santo Tomás, Los Carreras 753, Osorno 5310431, Chile
- Departamento de Ingeniería Química, Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Temuco 4811230, Chile
- Departamento de Ciencias Preclínicas, Facultad de Medicina, Universidad de La Frontera, Temuco 4811230, Chile
| | - Yolanda Calle
- School of Life and Health Sciences, University of Roehampton, London SW15 4JD, UK
| | - Karina Godoy
- Núcleo Científico y Tecnológico en Biorecursos (BIOREN), Universidad de La Frontera, Temuco 4811230, Chile
| | - Jorge Farías
- Departamento de Ingeniería Química, Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Temuco 4811230, Chile
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Wang XL, Schnoor M, Yin LM. Metallothionein-2: An emerging target in inflammatory diseases and cancers. Pharmacol Ther 2023; 244:108374. [PMID: 36889441 DOI: 10.1016/j.pharmthera.2023.108374] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 02/28/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023]
Abstract
Metallothionein-2 (MT-2) was originally discovered as a mediator of zinc homeostasis and cadmium detoxification. However, MT-2 has recently received increased attention because altered expression of MT-2 is closely related to various diseases such as asthma and cancers. Several pharmacological strategies have been developed to inhibit or modify MT-2, revealing its potential as drug target in diseases. Therefore, a better understanding of the mechanisms of MT-2 action is warranted to improve drug development for potential clinical applications. In this review, we highlight recent advances in determining the protein structure, regulation, binding partners, and new functions of MT-2 in inflammatory diseases and cancers.
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Affiliation(s)
- Xue-Ling Wang
- Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200030, China
| | - Michael Schnoor
- Department of Molecular Biomedicine, Center for Investigation and Advanced Studies of the National Polytechnic Institute (Cinvestav-IPN), Avenida IPN 2508, 07360 Mexico City, Mexico
| | - Lei-Miao Yin
- Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200030, China.
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Wang D, Lin D, Feng G, Yang X, Deng L, Li P, Zhang Z, Zhang W, Guo Y, Wang Y, Fu S, Zhang N. Impact of chronic benzene poisoning on aberrant mitochondrial DNA methylation: A prospective observational study. Front Public Health 2023; 11:990051. [PMID: 36817889 PMCID: PMC9937586 DOI: 10.3389/fpubh.2023.990051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 01/18/2023] [Indexed: 02/05/2023] Open
Abstract
Benzene is used as an industrial solvent, which may result in chronic benzene poisoning (CBP). Several studies suggested that CBP was associated with mitochondrial epigenetic regulation. This study aimed to explore the potential relation between CBP and mitochondrial DNA (mtDNA) methylation. This prospective observational study enrolled CBP patients admitted to Shenzhen Prevention and Treatment Center for Occupational Diseases hospital and healthy individuals between 2018 and 2021. The white blood cell (WBC), red blood cell (RBC), hemoglobin (HB), and platelet (PLT) counts and mtDNA methylation levels were measured using blood flow cytometry and targeted bisulfite sequencing, respectively. A total of 90 participants were recruited, including 30 cases of CBP (20 females, mean age 43.0 ± 8.0 years) and 60 healthy individuals (42 females, mean age 43.5 ± 11.5 years). This study detected 168 mitochondrial methylation sites >0 in all study subjects. The mtDNA methylation levels in the CBP cases were lower than the healthy individuals [median ± interquartile-range (IQR), 25th percentile, 75th percentile: (1.140 ± 0.570, 0.965, 1.535)% vs. median ± IQR, 25th percentile, 75th percentile: (1.705 ± 0.205,1.240,2.445)%, P < 0.05]. Additionally, the spearman correlation analysis showed that the mtDNA methylation levels were positively correlated with the counts of circulating leukocytes [WBC (r = 0.048, P = 0.036)] and platelets [PLT (r = 0.129, P < 0.01)]. We provided solid evidence of association between CBP and aberrant mtDNA methylation.
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Affiliation(s)
- Dianpeng Wang
- Medical Laboratory, Shenzhen Prevention and Treatment Center for Occupational Diseases, Shenzhen, China,*Correspondence: Dianpeng Wang ✉
| | - Dafeng Lin
- Medical Laboratory, Shenzhen Prevention and Treatment Center for Occupational Diseases, Shenzhen, China
| | - Gangquan Feng
- Medical Laboratory College, Hebei North University in China, Zhangjiakou, Hebei, China
| | - Xiangli Yang
- Medical Laboratory, Shenzhen Prevention and Treatment Center for Occupational Diseases, Shenzhen, China
| | - Lidan Deng
- Medical Laboratory, Shenzhen Prevention and Treatment Center for Occupational Diseases, Shenzhen, China
| | - Peimao Li
- Medical Laboratory, Shenzhen Prevention and Treatment Center for Occupational Diseases, Shenzhen, China
| | - Zhimin Zhang
- Medical Laboratory, Shenzhen Prevention and Treatment Center for Occupational Diseases, Shenzhen, China
| | - Wen Zhang
- Medical Laboratory, Shenzhen Prevention and Treatment Center for Occupational Diseases, Shenzhen, China
| | - Yan Guo
- Medical Laboratory, Shenzhen Prevention and Treatment Center for Occupational Diseases, Shenzhen, China
| | - Yue Wang
- Medical Laboratory College, Hebei North University in China, Zhangjiakou, Hebei, China
| | - Song Fu
- Medical Laboratory College, Hebei North University in China, Zhangjiakou, Hebei, China
| | - Naixing Zhang
- Medical Laboratory, Shenzhen Prevention and Treatment Center for Occupational Diseases, Shenzhen, China,Naixing Zhang ✉
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Moafi M, Ebrahimi MJ, Hatami F, Javandoust Gharehbagh F, Ahmadzadeh A, Emam MM, Rajaei A, Mansouri D, Alavi Darazam I. Lupus Anticoagulant Is Associated with Critical Cases and High Mortality in COVID-19: A Literature Review. TANAFFOS 2023; 22:53-60. [PMID: 37920325 PMCID: PMC10618584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 01/04/2023] [Indexed: 11/04/2023]
Abstract
Background In severe COVID-19 cases, a hypercoagulable state may occur. Antiphospholipid syndrome-related auto-antibodies (APSRAs) contribute to coagulopathy, but their role in COVID- 19 remains unclear. We aimed to investigate the prevalence of positive APSRAs and their effect on clinical outcomes in confirmed COVID-19 patients. Materials and Methods In this cross-sectional study, severe hospitalized COVID-19 cases were enrolled. Demographic and clinical data were obtained from the day of admission. APSRAs including IgG and/or IgM anticardiolipin (aCL) and anti-β2-glycoprotein1 (anti-β2GP1) as well as lupus anticoagulant (LAC) were measured. Results In this study, 54 severe COVID-19 cases with positive RT-PCR and chest CT scans were recruited. Positive APSRAs were found in 7 (12.9%) patients. Positive LAC was a more prevalent marker as compared to other tests (11.1%). The prevalence of positive aCL (IgM or IgG) and anti-ß2 GPI (IgM or IgG) was 1.8% (in an elderly woman). Lower oxygen saturation was found in the positive APSRAs group as opposed to the negative APSRAs group (70.3±9 vs. 84.8±9.7%). The mortality rate in the positive APSRAs group was significantly higher relative to the negative APSRAs group (83.3% vs. 27.1%; P-value: 0.01). Likewise, the mechanical ventilation requirement in the positive group was also higher (50% vs. 27.1%, P-value: 0.28). Conclusion This study indicated that LAC might be associated with critical cases and high mortality of COVID-19. Nonetheless, the mortality was not related to macrothrombotic incidence.
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Affiliation(s)
- Maral Moafi
- Department of Infectious Diseases and Tropical Medicine, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Infectious Diseases and Tropical Medicine Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Javad Ebrahimi
- Department of Infectious Diseases and Tropical Medicine, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Infectious Diseases and Tropical Medicine Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Firouze Hatami
- Department of Infectious Diseases and Tropical Medicine, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Infectious Diseases and Tropical Medicine Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Farid Javandoust Gharehbagh
- Infectious Diseases and Tropical Medicine Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arman Ahmadzadeh
- Rheumatology Department, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Mehdi Emam
- Rheumatology Department, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Alireza Rajaei
- Rheumatology Department, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Davood Mansouri
- Division of Infectious Diseases and Clinical Immunology, National Research Institute of Tuberculosis and Lung Diseases, Shahid Beheshti University of Medical Sciences, Teheran, Iran
| | - Ilad Alavi Darazam
- Department of Infectious Diseases and Tropical Medicine, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Infectious Diseases and Tropical Medicine Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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D'Souza LC, Dwivedi S, Raihan F, Yathisha UG, Raghu SV, Mamatha BS, Sharma A. Hsp70 overexpression in Drosophila hemocytes attenuates benzene-induced immune and developmental toxicity via regulating ROS/JNK signaling pathway. ENVIRONMENTAL TOXICOLOGY 2022; 37:1723-1739. [PMID: 35301792 DOI: 10.1002/tox.23520] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 12/07/2021] [Accepted: 03/06/2022] [Indexed: 06/14/2023]
Abstract
Benzene, a ubiquitous environmental chemical, is known to cause immune dysfunction and developmental defects. This study aims to investigate the relation between benzene-induced immune dysfunction and developmental toxicity in a genetically tractable animal model, Drosophila melanogaster. Further, the study explored the protective role of Heat Shock Protein 70 (Hsp70) against benzene-induced immunotoxicity and subsequent developmental impact. Drosophila larvae exposed to benzene (1.0, 10.0, and 100.0 mM) were examined for total hemocyte (immune cells) count, phagocytic activity, oxidative stress, apoptosis, and their developmental delay and reduction were analyzed. Benzene exposure for 48 h reduced the total hemocytes count and phagocytic activity, along with an increase in the Reactive Oxygen Species (ROS), and lipid peroxidation in the larval hemocytes. Subsequently, JNK-dependent activation of the apoptosis (Caspase-3 dependent) was also observed. During their development, benzene exposure to Drosophila larvae led to 3 days of delay in development, and ~40% reduced adult emergence. Hsp70-overexpression in hemocytes was found to mitigate benzene-induced oxidative stress and abrogated the JNK-mediated apoptosis in hemocytes, thus restoring total hemocyte count and improving phagocytotic activity. Further, hsp70-overexpression in hemocytes also lessened the benzene-induced developmental delay (rescue of 2.5 days) and improved adult emergence (~20%) emergence, revealing a possible control of immune cells on the organism's development and survival. Overall, this study established that hsp70-overexpression in the Drosophila hemocytes confers protection against benzene-induced immune injury via regulating the ROS/JNK signaling pathway, which helps in the organism's survival and development.
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Affiliation(s)
- Leonard Clinton D'Souza
- Division of Environmental Health and Toxicology, Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Mangaluru, India
| | - Shiwangi Dwivedi
- Division of Environmental Health and Toxicology, Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Mangaluru, India
| | - Faiza Raihan
- Division of Environmental Health and Toxicology, Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Mangaluru, India
| | - Undiganalu Gangadharappa Yathisha
- Division of Food Safety and Nutrition, Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Mangaluru, India
| | | | - Bangera Sheshappa Mamatha
- Division of Food Safety and Nutrition, Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Mangaluru, India
| | - Anurag Sharma
- Division of Environmental Health and Toxicology, Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Mangaluru, India
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Chen L, Guo P, Li W, Jiang X, Zhao Q, Li D, Wang Q, Xiao Y, Xing X, Pang Y, Aschner M, Zhang L, Chen W. Protein phosphatase 2A regulates cytotoxicity and drug resistance by dephosphorylating xenobiotic metabolism enzymes AHR and MDR1. J Biol Chem 2022; 298:101918. [PMID: 35405096 PMCID: PMC9118923 DOI: 10.1016/j.jbc.2022.101918] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 03/26/2022] [Accepted: 03/28/2022] [Indexed: 11/20/2022] Open
Abstract
Protein phosphatase 2A (PP2A) is a serine/threonine dephosphorylating enzyme complex that plays numerous roles in biological processes, including cell growth and metabolism. However, its specific actions in many of these critical pathways are unclear. To explore mechanisms underlying metabolic enzyme regulation in the liver, we investigated the key pathways involved in regulation of xenobiotic-metabolizing enzymes in a mouse model with hepatocyte-specific deletion of Ppp2r1a, encoding the Aα subunit of PP2A. We performed transcriptome and phosphoproteome analysis in mouse livers at the age of 3 months and identified 2695 differentially expressed genes and 549 upregulated phosphoproteins in homozygous knockout mouse livers compared with WT littermates. In particular, the expression of metabolic enzymes Cyp2e1, Cyp1a1, Cyp1a2, Mdr1a, and Abcg2 was dramatically altered in homozygous knockout mouse livers. We also demonstrated that activation of PP2A reversed the decline of metabolic enzyme expression in primary mouse hepatocytes. We found that specific PP2A holoenzymes were involved in metabolic enzyme induction through dephosphorylation of transcription factors, nuclear receptors, or the target enzymes themselves, leading to dysregulation of xenobiotic metabolism or drug-induced hepatotoxicity. Notably, we confirmed that a regulatory axis, PP2A B56α–aryl hydrocarbon receptor–Cyp1a1, was involved in benzo(a)pyrene-induced cytotoxicity through dephosphorylation of the metabolic nuclear receptor, aryl hydrocarbon receptor, at serine 36. In addition, we showed that PP2A B56δ complexes directly dephosphorylated the multidrug efflux pump MDR1 (encoded by multi-drug resistance gene 1), contributing to drug resistance against the chemotherapeutic 5-fluorouracil. Taken together, these novel findings demonstrate the involvement of PP2A in the regulation of liver metabolism.
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Affiliation(s)
- Liping Chen
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Ping Guo
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Wenxue Li
- Department of Toxicology, Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, China
| | - Xinhang Jiang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Qun Zhao
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Science, National Chromatographic Research and Analysis Center, Dalian 116023, China
| | - Daochuan Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Qing Wang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Yongmei Xiao
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Xiumei Xing
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Yaqin Pang
- Faculty of Toxicology, School of Public Health, Youjiang Medical College for Nationalities, Guangxi 533000, China
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Forchheimer 209, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Lihua Zhang
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Science, National Chromatographic Research and Analysis Center, Dalian 116023, China.
| | - Wen Chen
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China.
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T-Cell-Specific CerS4 Depletion Prolonged Inflammation and Enhanced Tumor Burden in the AOM/DSS-Induced CAC Model. Int J Mol Sci 2022; 23:ijms23031866. [PMID: 35163788 PMCID: PMC8837088 DOI: 10.3390/ijms23031866] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/31/2022] [Accepted: 02/04/2022] [Indexed: 12/12/2022] Open
Abstract
To better understand the role of sphingolipids in the multifactorial process of inflammatory bowel disease (IBD), we elucidated the role of CerS4 in colitis and colitis-associated cancer (CAC). For this, we utilized the azoxymethane/dextran sodium sulphate (AOM/DSS)-induced colitis model in global CerS4 knockout (CerS4 KO), intestinal epithelial (CerS4 Vil/Cre), or T-cell restricted knockout (CerS4 LCK/Cre) mice. CerS4 KO mice were highly sensitive to the toxic effect of AOM/DSS, leading to a high mortality rate. CerS4 Vil/Cre mice had smaller tumors than WT mice. In contrast, CerS4 LCK/Cre mice frequently suffered from pancolitis and developed more colon tumors. In vitro, CerS4-depleted CD8+ T-cells isolated from the thymi of CerS4 LCK/Cre mice showed impaired proliferation and prolonged cytokine production after stimulation in comparison with T-cells from WT mice. Depletion of CerS4 in human Jurkat T-cells led to a constitutively activated T-cell receptor and NF-κB signaling pathway. In conclusion, the deficiency of CerS4 in T-cells led to an enduring active status of these cells and prevents the resolution of inflammation, leading to a higher tumor burden in the CAC mouse model. In contrast, CerS4 deficiency in epithelial cells resulted in smaller colon tumors and seemed to be beneficial. The higher tumor incidence in CerS4 LCK/Cre mice and the toxic effect of AOM/DSS in CerS4 KO mice exhibited the importance of CerS4 in other tissues and revealed the complexity of general targeting CerS4.
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9
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Identification of miRNAs Involved in Liver Injury Induced by Chronic Exposure to Cadmium. Toxicology 2022; 469:153133. [DOI: 10.1016/j.tox.2022.153133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 02/10/2022] [Accepted: 02/15/2022] [Indexed: 12/24/2022]
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10
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Guo X, Zhang L, Wang J, Zhang W, Ren J, Chen Y, Zhang Y, Gao A. Plasma metabolomics study reveals the critical metabolic signatures for benzene-induced hematotoxicity. JCI Insight 2022; 7:154999. [PMID: 35076025 PMCID: PMC8855792 DOI: 10.1172/jci.insight.154999] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 11/23/2021] [Indexed: 12/11/2022] Open
Affiliation(s)
- Xiaoli Guo
- Department of Occupational Health and Environmental Health, School of Public Health, and
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Lei Zhang
- Department of Occupational Health and Environmental Health, School of Public Health, and
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Jingyu Wang
- Department of Occupational Health and Environmental Health, School of Public Health, and
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Wei Zhang
- Department of Occupational Health and Environmental Health, School of Public Health, and
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Jing Ren
- Department of Occupational Health and Environmental Health, School of Public Health, and
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Yujiao Chen
- Department of Occupational Health and Environmental Health, School of Public Health, and
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Yanlin Zhang
- Research Center of Occupational Medicine, Peking University Third Hospital, Haidian District, Beijing, China
| | - Ai Gao
- Department of Occupational Health and Environmental Health, School of Public Health, and
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
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11
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Wang T, Zhang H, Wang K, Cao M, Zhang M, Sun R, Pu Y, Zhang J. The effects of glucose-6-phosphate dehydrogenase deficiency on benzene-induced hematotoxicity in mice. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 226:112803. [PMID: 34571417 DOI: 10.1016/j.ecoenv.2021.112803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 09/05/2021] [Accepted: 09/16/2021] [Indexed: 06/13/2023]
Abstract
Glucose-6-phosphate dehydrogenase (G6PD) deficiency is the most common human enzyme deficiency. Our previous study revealed the level of G6PD changed in wild type (WT) mice after benzene exposure. In this study, the pentose phosphate pathway (PPP) in regulation of benzene-induced hematotoxicity was investigated and other potential pathways were discovered in a G6PD deficiency mouse model. WT and G6PD mutation (G6PDmut) mice were exposed to benzene (diluted in corn oil) at doses of 0 and 160 mg/kg by subcutaneous injection for 5 days/week, 4 weeks. Peripheral blood samples and bone marrow cells (BMCs) were obtained and measured. The levels of nicotinamide adenine dinucleotide phosphate (NADPH),reduced glutathione (GSH) and malondialdehyde (MDA) were detected and comet assay was analyzed for DNA damage in BMCs. Finally, RNA sequencing (RNA-seq) of BMCs was performed. The results showed that white blood cells decreased significantly in G6PDmut mice compared with WT mice after benzene treatment. The ratio of hematopoietic stem/progenitor cells significantly decreased in G6PDmut mice exposed to benzene. The reduction of NADPH and GSH revealed the effect on PPP with G6PD deficiency, which then caused the increase of MDA and DNA damage. Finally, RNA-seq results suggested potential genes including SHROOM4, CAMK2B and REN1 played potential roles of G6PD deficiency on benzene-induced hematotoxicity. Renin-angiotensin system and cAMP signaling pathway were potentially involved in the process. Our study provides a better understanding for the effects of G6PD deficiency on benzene-induced hematotoxicity.
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Affiliation(s)
- Tong Wang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education of China, School of Public Health, Southeast University, Nanjing 210009, China
| | - Hong Zhang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education of China, School of Public Health, Southeast University, Nanjing 210009, China
| | - Kun Wang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education of China, School of Public Health, Southeast University, Nanjing 210009, China
| | - Meng Cao
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education of China, School of Public Health, Southeast University, Nanjing 210009, China
| | - Mengying Zhang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education of China, School of Public Health, Southeast University, Nanjing 210009, China
| | - Rongli Sun
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education of China, School of Public Health, Southeast University, Nanjing 210009, China
| | - Yuepu Pu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education of China, School of Public Health, Southeast University, Nanjing 210009, China
| | - Juan Zhang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education of China, School of Public Health, Southeast University, Nanjing 210009, China.
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Golabi-Habashi N, Salimi A, Malekinejad H. Quercetin attenuated the Benzene-induced hemato- and hepatotoxicity in mice. Toxicol Rep 2021; 8:1569-1575. [PMID: 34430219 PMCID: PMC8367781 DOI: 10.1016/j.toxrep.2021.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 07/31/2021] [Accepted: 08/02/2021] [Indexed: 11/29/2022] Open
Abstract
The protective effects of Quercetin (QCN) on Benzene (BNZ)-induced hemato- and hepatotoxicy were investigated. To reach this goal, 36 adult male mice were divided into 6 groups (n = 6). The control group was not exposed to BNZ, while animals in BNZ group were exposed to BNZ (30 ppm) and the animals of QCN group were received QCN (50 mg/kg, orally), the fourth, fifth and sixth groups were exposed to 30 ppm BNZ and received 10, 50 and 100 mg/kg QCN one h before the BNZ exposure, for 28 days. The day after the last exposure following anesthesia and the blood collection, the liver and femur tissues were collected. The bone marrow samples were extracted and subjected to micronucleus assay. The blood samples were processed for hematological and biochemical analyses. Histopathological examinations were performed on the liver samples. QCN reduced significantly (p < 0.05) the BNZ-elevated hepatic enzymes and ameliorated the BNZ-induced WBC and RBC reduction. The BNZ-elevated micronucleus percentage both in the bone marrow and peripheral blood was remarkably declined in the QCN-received groups. QCN improved the BNZ-induced histopathological changes and oxidative status in the liver and serum. Our results suggest that QCN could be a protective supplement to reduce the BNZ-induced hemato- and hepatotoxicities.
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Affiliation(s)
- Nayyer Golabi-Habashi
- Department of Pharmacology & Toxicology, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Ahmad Salimi
- Department of Pharmacology & Toxicology, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
- Traditional Medicine and Hydrotherapy Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Hassan Malekinejad
- Department of Pharmacology & Toxicology, School of Pharmacy, Urmia University of Medical Sciences, Urmia, Iran
- Experimental and Applied Pharmaceutical Sciences Research Center, Urmia University of Medical Sciences, Urmia, Iran
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Lu PCW, Shahbaz S, Winn LM. Benzene and its effects on cell signaling pathways related to hematopoiesis and leukemia. J Appl Toxicol 2020; 40:1018-1032. [PMID: 32112456 DOI: 10.1002/jat.3961] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 01/30/2020] [Accepted: 02/09/2020] [Indexed: 12/14/2022]
Abstract
Benzene is an environmental toxicant found in many consumer products. It is an established human carcinogen and is known to cause acute myeloid leukemia in adults. Epidemiological evidence has since shown that benzene can cross the placenta and affect the fetal liver. Animal studies have shown that in utero exposure to benzene can increase tumor incidence in offspring. Although there have been risk factors established for acute myeloid leukemia, they still do not account for many of the cases. Clearly then, current efforts to elucidate the mechanism by which benzene exerts its carcinogenic properties have been superficial. Owing to the critical role of cell signaling pathways in the development of an organism and its various organ systems, it seems plausible to suspect that these pathways may have a role in leukemogenesis. This review article assesses current evidence of the effects of benzene on critical hematopoietic signaling pathways. Pathways discussed included Hedgehog, Notch/Delta, Wingless/Integrated, nuclear factor-kappaB and others. Following a review of the literature, it seems that current evidence about the effects of benzene on these critical signaling pathways remains limited. Given the important role of these pathways in hematopoiesis, more attention should be given to them.
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Affiliation(s)
- Peter C W Lu
- Department of Biomedical & Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Sara Shahbaz
- Department of Biomedical & Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Louise M Winn
- Department of Biomedical & Molecular Sciences, Queen's University, Kingston, Ontario, Canada.,School of Environmental Sciences, Queen's University, Kingston, Ontario, Canada
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14
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Fabris AL, Nunes AV, Schuch V, de Paula-Silva M, Rocha G, Nakaya HI, Ho PL, Silveira ELV, Farsky SHP. Hydroquinone exposure alters the morphology of lymphoid organs in vaccinated C57Bl/6 mice. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 257:113554. [PMID: 31767231 DOI: 10.1016/j.envpol.2019.113554] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 10/17/2019] [Accepted: 10/31/2019] [Indexed: 06/10/2023]
Abstract
The influenza is a common viral infection that can be fatal, especially in high-risk groups such as children, pregnant women, elderly, and immune-deficient individuals. Vaccination is the most efficient approach to prevent the spreading of viral infection and promote individual and public health. In contrast, exposure to environmental pollutants such as cigarette smoke reduces the efficacy of vaccination. We investigated whether chronic exposure to hydroquinone (HQ), the most abundant compound of the tobacco particulate phase, could impair the adaptive immune responses elicited by influenza vaccination. For this, adult male C57BL/6 mice were daily exposed to either nebulized HQ or PBS for 1 h for a total of eight weeks. At weeks 6 and 8, the mice were primed and boosted with the trivalent influenza vaccine via IM respectively. Although the HQ exposure did not alter the body weight of the mice and the biochemical and hematological parameters, the pollutant increased the oxidative stress in splenocytes of immunized animals, modified the morphology of spleen follicles, and augmented the size of their lymph nodes. The lymphoid organs of HQ-exposed mice presented a similar number of vaccine-specific IgG-secreting cells, titers of vaccine-specific total IgG, and respective subclasses. Transcriptome studies with HQ, benzene, or cigarette smoke exposure were also analyzed. The genes up-regulated upon pollutant exposure were associated with neutrophil migration and were shown to be co-expressed with antibody-secreting cell genes. Therefore, these findings suggest that HQ exposure may trigger an immune-compensatory mechanism that enhances the humoral responses induced by influenza vaccination.
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Affiliation(s)
- André Luis Fabris
- Laboratory of Experimental Toxicology, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Andre Vinicius Nunes
- Laboratory of Immunology, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Viviane Schuch
- Computational Systems Biology Laboratory, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Marina de Paula-Silva
- Laboratory of Experimental Toxicology, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Gho Rocha
- Laboratory of Experimental Toxicology, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Helder I Nakaya
- Computational Systems Biology Laboratory, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Paulo Lee Ho
- Bacteriology Service, BioIndustrial Division, Butantan Institute, São Paulo, Brazil
| | - Eduardo L V Silveira
- Laboratory of Immunology, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
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Neuronal network remodeling and Wnt pathway dysregulation in the intra-hippocampal kainate mouse model of temporal lobe epilepsy. PLoS One 2019; 14:e0215789. [PMID: 31596871 PMCID: PMC6785072 DOI: 10.1371/journal.pone.0215789] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 09/20/2019] [Indexed: 01/19/2023] Open
Abstract
Mouse models of mesial temporal lobe epilepsy recapitulate aspects of human epilepsy, which is characterized by neuronal network remodeling in the hippocampal dentate gyrus. Observational studies suggest that this remodeling is associated with altered Wnt pathway signaling, although this has not been experimentally examined. We used the well-characterized mouse intrahippocampal kainate model of temporal lobe epilepsy to examine associations between hippocampal neurogenesis and altered Wnt signaling after seizure induction. Tissue was analyzed using immunohistochemistry and confocal microscopy, and gene expression analysis was performed by RT-qPCR on RNA extracted from anatomically micro-dissected dentate gyri. Seizures increased neurogenesis and dendritic arborization of newborn hippocampal dentate granule cells in peri-ictal regions, and decreased neurogenesis in the ictal zone, 2-weeks after kainate injection. Interestingly, administration of the novel canonical Wnt pathway inhibitor XAV939 daily for 2-weeks after kainate injection further increased dendritic arborization in peri-ictal regions after seizure, without an effect on baseline neurogenesis in control animals. Transcriptome analysis of dentate gyri demonstrated significant canonical Wnt gene dysregulation in kainate-injected mice across all regions for Wnt3, 5a and 9a. Intriguingly, certain Wnt genes demonstrated differential patterns of dysregulation between the ictal and peri-ictal zones, most notably Wnt5B, 7B and DKK-1. Together, these results demonstrate regional variation in Wnt pathway dysregulation early after seizure induction, and surprisingly, suggest that some Wnt-mediated effects might actually temper aberrant neurogenesis after seizures. The Wnt pathway may therefore provide suitable targets for novel therapies that prevent network remodeling and the development of epileptic foci in high-risk patients.
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