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Schrenk D, Bignami M, Bodin L, Chipman JK, del Mazo J, Grasl‐Kraupp B, Hogstrand C, Hoogenboom L(R, Leblanc J, Nebbia CS, Nielsen E, Ntzani E, Petersen A, Sand S, Schwerdtle T, Wallace H, Benford D, Hart A, Schroeder H, Rose M, Vrijheid M, Kouloura E, Bordajandi LR, Riolo F, Vleminckx C. Update of the scientific opinion on tetrabromobisphenol A (TBBPA) and its derivatives in food. EFSA J 2024; 22:e8859. [PMID: 39010865 PMCID: PMC11247339 DOI: 10.2903/j.efsa.2024.8859] [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] [Indexed: 07/17/2024] Open
Abstract
The European Commission asked EFSA to update its 2011 risk assessment on tetrabromobisphenol A (TBBPA) and five derivatives in food. Neurotoxicity and carcinogenicity were considered as the critical effects of TBBPA in rodent studies. The available evidence indicates that the carcinogenicity of TBBPA occurs via non-genotoxic mechanisms. Taking into account the new data, the CONTAM Panel considered it appropriate to set a tolerable daily intake (TDI). Based on decreased interest in social interaction in male mice, a lowest observed adverse effect level (LOAEL) of 0.2 mg/kg body weight (bw) per day was identified and selected as the reference point for the risk characterisation. Applying the default uncertainty factor of 100 for inter- and intraspecies variability, and a factor of 3 to extrapolate from the LOAEL to NOAEL, a TDI for TBBPA of 0.7 μg/kg bw per day was established. Around 2100 analytical results for TBBPA in food were used to estimate dietary exposure for the European population. The most important contributors to the chronic dietary LB exposure to TBBPA were fish and seafood, meat and meat products and milk and dairy products. The exposure estimates to TBBPA were all below the TDI, including those estimated for breastfed and formula-fed infants. Accounting for the uncertainties affecting the assessment, the CONTAM Panel concluded with 90%-95% certainty that the current dietary exposure to TBBPA does not raise a health concern for any of the population groups considered. There were insufficient data on the toxicity of any of the TBBPA derivatives to derive reference points, or to allow a comparison with TBBPA that would support assignment to an assessment group for the purposes of combined risk assessment.
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Han Y, Liu Z, Lu L, Wang B, Li W, Yuan X, Ding J, Zhang H, Liu J. Tetrabromobisphenol A reduces male rats reproductive organ coefficients and disrupting sexual hormone by causing oxidative stress. Toxicology 2024; 505:153837. [PMID: 38763426 DOI: 10.1016/j.tox.2024.153837] [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: 03/06/2024] [Revised: 05/14/2024] [Accepted: 05/16/2024] [Indexed: 05/21/2024]
Abstract
Tetrabromobisphenol A (TBBPA) has become a topic of public attention due to its pervasive detection in the environment and organisms in recent decades. However, limited information is available regarding the toxicity of TBBPA on reproductive ability of male mammals. Herein, the reproductive toxicity of TBBPA was investigated in male rats to fill the knowledge gap. In this study, male rats were exposed to TBBPA (0, 10, 100, and 1000 mg/kg) for 6 weeks. Subsequently, body and organ indexes, histopathological evaluation of testis and epididymis, ultrastructural observation of sperm, testosterone and progesterone levels, and oxidative stress indicators were conducted to reveal corresponding mechanisms. Results obtained showed that compare to the control group, the body weight, testes weight, epididymis weight, seminal vesicle and coagulation glands weight of rats in the 1000 mg/kg group lost 8.30%, 16.84%, 20.16%, 19.72% and 26.42%, respectively. Intriguingly, exposure to TBBPA (10, 100, 100 mg/kg) resulted in substantial pathological damage in testis, epididymis and sperm. TBBPA exposure also increased malondialdehyde (MDA) and hydrogen peroxide (H2O2) contents, as well as superoxide dismutase (T-SOD) and catalase (CAT) activities in testicular tissue. What's more, the testosterone and progesterone levels in male rat serum were significantly decreased after exposure to TBBPA for 6 weeks. Meanwhile, results of molecular docking showed that TBBPA has a strong affinity with estrogen receptors (ERs). These findings demonstrated that TBBPA exposure negatively impacts the reproductive ability of male rats, thus providing new insights for risk assessment for reproductive health under TBBPA exposure.
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Affiliation(s)
- Yu Han
- School of Life Sciences, Central South University, Changsha 410083, China; School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Zhiquan Liu
- School of Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Liping Lu
- School of Public Health Hangzhou Normal University, Hangzhou 311121, China
| | - Binhao Wang
- School of Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Wenbing Li
- School of Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Xia Yuan
- School of Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Jiafeng Ding
- School of Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Hangjun Zhang
- School of Engineering, Hangzhou Normal University, Hangzhou 311121, China.
| | - Jing Liu
- School of Life Sciences, Central South University, Changsha 410083, China; Department of Hematology, the Second Xiangya Hospital, Molecular Biology Research Center, School of Life Sciences, Hunan Province Key Laboratory of Basic and Applied Hematology, Central South University, Changsha 410011, China.
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3
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Li Z, Li Z, Zhou Y, Meng W, Li J, Zhou Y, He C, Dong G, Yu Y. Co-occurrence of tetrabromobisphenol a and debromination products in human hair across China: Implications for exposure sources and health effects on metabolic syndrome. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 909:168514. [PMID: 37977374 DOI: 10.1016/j.scitotenv.2023.168514] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/27/2023] [Accepted: 11/09/2023] [Indexed: 11/19/2023]
Abstract
The large usage of Tetrabromobisphenol A (TBBPA) in consumer products leads to ubiquitous distribution globally, however, studies on the occurrence of their debromination compounds were rather scarce. Also, though many studies illustrate the effectiveness of hair analysis to assess human exposure to organic pollutants, evidence on the associations with health implications is still fairly limited. Herein, 598 participants from across China were employed to investigate chronic, low-level exposure to TBBPA and debromination products by hair analysis. The geomean concentrations of TBBPA, 2,2',6-tribromobisphenol A (Tri-BBPA), 2,2'- and 2,6-dibromobisphenol A (Di-BBPA), and 2-monobromobisphenol A (Mo-BBPA) were 1.07, 0.145, 0.135, and 0.894 ng/g, respectively, indicating nonnegligible health risks of debromination products. Hair analyte levels correlated with population age and population density among sampling regions. Sexual- and spatial-variations were observed with higher concentrations in females and in E-waste recycling sites. Logistic regression models showed that TBBPA exposure (adjusted odds ratio (OR): 1.02, 95 % confidential interval (CI): 1.01-1.05) was positively associated with risk of metabolic syndrome by adjusting for various covariates. These findings imply usefulness of hair as an alternative biomonitoring tool to assess human exposure to TBBPA and relative health effects, which highlights public concerns on co-exposure to these chemicals.
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Affiliation(s)
- Zongrui Li
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Zhenchi Li
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Ying Zhou
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Wenjie Meng
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Jincheng Li
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Yang Zhou
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Chang He
- Institute of Environmental Health and Pollution control, Guangdong University of Technology, Guangzhou 510006, China
| | - Guanghui Dong
- Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Yunjiang Yu
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China.
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Yang Y, Li M, Zheng J, Zhang D, Ding Y, Yu HQ. Environmentally relevant exposure to tetrabromobisphenol A induces reproductive toxicity via regulating glucose-6-phosphate 1-dehydrogenase and sperm activation in Caenorhabditis elegans. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 907:167820. [PMID: 37858812 DOI: 10.1016/j.scitotenv.2023.167820] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 10/02/2023] [Accepted: 10/11/2023] [Indexed: 10/21/2023]
Abstract
Tetrabromobisphenol A (TBBPA), a ubiquitous brominated flame-retardant environmental pollutant, has been reported to cause reproductive toxicity by chronic exposure. However, the acute reproductive risk and mechanisms of TBBPA toxicity to individuals, especially at environmentally relevant levels, remains a topic of debate. In this study, Caenorhabditis elegans was used to investigate the reproductive toxicity of acute exposure to TBBPA at environmentally relevant doses. The reproductive end points (embryonic lethality ratio and brood size), oxidative stress, sperm activation, and molecular docking were evaluated. Results showed that, after 24 h of TBBPA treatment, even at the lowest concentration (1 μg/L), the embryonic lethality ratio of C. elegans increased significantly, from 1.63 % to 3.03 %. Furthermore, TBBPA induced oxidative stress with significantly increased expression of sod-3 in C. elegans, which further raised the level of reproductive toxicity through inhibiting the activation of sperm in nematodes. In addition, molecular docking suggested TBBPA might compete for the glucose-6-phosphate-binding site of glucose-6-phosphate 1-dehydrogenase, resulting in oxidative stress generation. Accordingly, our findings indicate that even acute exposure to environmental concentrations of TBBPA may induce reproductive toxicity through reducing sperm activation in nematodes.
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Affiliation(s)
- Yaning Yang
- School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China; Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China; Anhui Huaqi Environmental Protection Technology Co. Ltd., Ma' Anshan, Anhui 243000, China
| | - Minghui Li
- School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China; State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210023, China
| | - Jun Zheng
- Anhui Huaqi Environmental Protection Technology Co. Ltd., Ma' Anshan, Anhui 243000, China
| | - Dewei Zhang
- Anhui Huaqi Environmental Protection Technology Co. Ltd., Ma' Anshan, Anhui 243000, China
| | - Yan Ding
- School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China.
| | - Han-Qing Yu
- Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China
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Wu HD, Yang LW, Deng DY, Jiang RN, Song ZK, Zhou LT. The effects of brominated flame retardants (BFRs) on pro-atherosclerosis mechanisms. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 262:115325. [PMID: 37544066 DOI: 10.1016/j.ecoenv.2023.115325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 07/24/2023] [Accepted: 08/01/2023] [Indexed: 08/08/2023]
Abstract
Brominated flame-retardants (BFRs) are environmental endocrine disruptors, comprising several pollutants, which potentially affect the endocrine system and cause dysfunction and disease. Widespread BFR exposure may cause multisystem toxicity, including cardiovascular toxicity in some individuals. Studies have shown that BFRs not only increase heart rate, induce arrhythmia and cardiac hypertrophy, but also cause glycolipid metabolism disorders, vascular endothelial dysfunction, and inflammatory responses, all of which potentially induce pre-pathological changes in atherosclerosis. Experimental data indicated that BFRs disrupt gene expression or signaling pathways, which cause vascular endothelial dysfunction, lipid metabolism-related disease, inflammation, and possibly atherosclerosis. Considerable evidence now suggests that BFR exposure may be a pro-atherosclerotic risk factor. In this study, we reviewed putative BFR effects underpinning pro-atherosclerosis mechanisms, and focused on vascular endothelial cell dysfunction, abnormal lipid metabolism, pro-inflammatory cytokine production and foam cell formation. Consequently, we proposed a scientific basis for preventing atherosclerosis by BFRs and provided concepts for further research.
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Affiliation(s)
- Hai-Di Wu
- Department of Cardiology, The First Hospital of Jilin University, Changchun 130021, China
| | - Li-Wei Yang
- School of Public Health, Jilin University, Changchun 130021, China
| | - Da-Yong Deng
- Department of Radiology, Jilin Provincial Cancer Hospital, 1066 Jinhu Road, 130000 Changchun, China
| | - Rong-Na Jiang
- Department of Intensive Care Unit, Jilin Provincial Cancer Hospital, 1066 Jinhu Road, 130000 Changchun, China
| | - Zi-Kai Song
- Department of Cardiology, The First Hospital of Jilin University, Changchun 130021, China.
| | - Li-Ting Zhou
- School of Public Health, Jilin University, Changchun 130021, China.
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Chen Y, Zou Z, Găman MA, Xu L, Li J. NADPH oxidase mediated oxidative stress signaling in FLT3-ITD acute myeloid leukemia. Cell Death Discov 2023; 9:208. [PMID: 37391442 DOI: 10.1038/s41420-023-01528-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 06/14/2023] [Accepted: 06/22/2023] [Indexed: 07/02/2023] Open
Abstract
The internal tandem duplication of the juxtamembrane domain of the FMS-like tyrosine kinase 3 (FLT3-ITD) is the most common genetic change in acute myeloid leukemia (AML), and about 30% of all AMLs harbor a FLT3-ITD mutation. Even though FLT3 inhibitors have displayed encouraging effects in FLT3-ITD-mutated AML, the extent of the clinical response to these compounds is cut short due to the rapid development of drug resistance. Evidence has shown that FLT3-ITD triggered activation of oxidative stress signaling may exert a pivotal role in drug resistance. The downstream pathways of FLT3-ITD, including STAT5, PI3K/AKT, and RAS/MAPK, are considered to be major oxidative stress signaling pathways. These downstream pathways can inhibit apoptosis and promote proliferation and survival by regulating apoptosis-related genes and promoting the generation of reactive oxygen species (ROS) through NADPH oxidase (NOX) or other mechanisms. Appropriate levels of ROS may promote proliferation, but high levels of ROS can lead to oxidative damage to the DNA and increase genomic instability. In addition, post-translational modifications of FLT3-ITD and changes in its subcellular localization can affect downstream signaling which may also be one of the mechanisms leading to drug resistance. In this review, we summarized the research progress on NOX mediated oxidative stress signaling and its relationship with drug resistance in FLT3-ITD AML, and discuss the possible new targets in FLT3-ITD signal blocking to reverse drug resistance in FLT3-ITD-mutated AML.
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Affiliation(s)
- Yongfeng Chen
- Department of Basic Medical Sciences, Medical College of Taizhou University, Taizhou, Zhejiang, 318000, China.
| | - Zhenyou Zou
- Institute of Psychosis Prevention, Brain Hospital of Guangxi Zhuang Autonomous Region, Liuzhou, Guangxi, 542005, China.
| | - Mihnea-Alexandru Găman
- Faculty of Medicine, "Carol Davila" University of Medicine and Pharmacy, 050474, Bucharest, Romania.
- Department of Hematology, Centre of Hematology and Bone Marrow Transplantation, Fundeni Clinical Institute, Bucharest, Romania.
| | - Linglong Xu
- Department of Hematology, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, Zhejiang, 318000, China
| | - Jing Li
- Department of Histology and Embryology, North Sichuan Medical College, Nanchong, Sichuan, 637000, China
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An T, Lu L, Li G. Daily exposure to low concentrations Tetrabromobisphenol A interferes with the thyroid hormone pathway in HepG2 cells. FUNDAMENTAL RESEARCH 2023; 3:384-391. [PMID: 38933766 PMCID: PMC11197689 DOI: 10.1016/j.fmre.2022.03.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 03/04/2022] [Accepted: 03/10/2022] [Indexed: 01/31/2023] Open
Abstract
Tetrabromobisphenol A (TBBPA) is a flame retardant that adversely affects the environment and human health. The present study exposed HepG2 cells to low concentrations of TBBPA daily to investigate the changes in gene regulation, mainly related to pathways associated with the endocrine system. The quantitative polymerase chain reaction (qPCR) confirmed that prolonged exposure gradually activated the thyroid hormone and parathyroid hormone signaling pathways. The expression levels of genes related to the thyroid hormone signaling pathway were upregulated (1.15-8.54 times) after five generations of exposure to 1 and 81 nM TBBPA. Furthermore, co-exposure to 81 nM TBBPA and 0.5 nM thyroid hormone receptor antagonist for five generations significantly reduced the expression of thyroid hormone and parathyroid hormone receptors. Meanwhile, 81 nM TBBPA inhibited the activation of the Ras pathway and downregulated Ras gene expression level (3.7 times), indicating the association between the toxic effect and thyroid hormone receptors. Additionally, our experiments revealed that the thyroid hormone pathway regulated the induction of the Ras signaling pathway by TBBPA. The study thus proves that daily exposure to TBBPA interferes with the thyroid hormone signaling pathway and subsequently the endocrine system.
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Affiliation(s)
- Taicheng An
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Lirong Lu
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Guiying Li
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
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Soto-Bielicka P, Tejeda I, Peropadre A, Hazen MJ, Fernández Freire P. Detrimental effects of individual versus combined exposure to tetrabromobisphenol A and polystyrene nanoplastics in fish cell lines. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 98:104072. [PMID: 36690190 DOI: 10.1016/j.etap.2023.104072] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 01/10/2023] [Accepted: 01/19/2023] [Indexed: 06/17/2023]
Abstract
The potential interactions between the diverse pollutants that can be released into the environment and the resulting outcomes are a challenging issue that needs to be further examined. This in vitro study was aimed to assess potential toxic effects caused by combined exposure to tetrabromobisphenol A, a flame retardant widely used and frequently detected in aquatic matrices, and commercially available polystyrene nanoparticles as reference material to evaluate nanoplastics risks. Our results, using freshwater fish cell lines and a set of relevant cytotoxicity endpoints including cell viability, oxidative stress, and DNA damage, provide additional mechanistic insights that could help to fully characterize the toxicity profiles of tetrabromobisphenol A and polystyrene nanoparticles. Furthermore, we describe subtle changes in cell viability as well as the generation of oxidative DNA damage after coexposure to subcytotoxic concentrations of the tested pollutants.
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Affiliation(s)
- Patricia Soto-Bielicka
- Department of Biology (Lab A-110), Faculty of Sciences, Universidad Autónoma de Madrid, C/Darwin 2, 28049 Madrid, Spain
| | - Inés Tejeda
- Department of Biology (Lab A-110), Faculty of Sciences, Universidad Autónoma de Madrid, C/Darwin 2, 28049 Madrid, Spain
| | - Ana Peropadre
- Department of Biology (Lab A-110), Faculty of Sciences, Universidad Autónoma de Madrid, C/Darwin 2, 28049 Madrid, Spain
| | - María José Hazen
- Department of Biology (Lab A-110), Faculty of Sciences, Universidad Autónoma de Madrid, C/Darwin 2, 28049 Madrid, Spain
| | - Paloma Fernández Freire
- Department of Biology (Lab A-110), Faculty of Sciences, Universidad Autónoma de Madrid, C/Darwin 2, 28049 Madrid, Spain.
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9
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Zhang Y, Xu S, Li K, Li X, Yin H, Li S, Gao XJ. TBBPA induced ROS overproduction promotes apoptosis and inflammation by inhibiting autophagy in mice lung. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 252:114607. [PMID: 36738613 DOI: 10.1016/j.ecoenv.2023.114607] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 01/28/2023] [Accepted: 01/31/2023] [Indexed: 06/18/2023]
Abstract
Tetrabromobisphenol A (TBBPA), a non-degradable environmental pollutant, was discharge into the air during the manufacture, use and recycling of plastic products. Respiratory exposure is the main way to inhalation of TBBPA. However, the research on the damage of TBBPA to the respiratory system is still extremely few. The aim of this experiment was to explore the mechanism of TBBPA toxicity to the lungs. Forty C57BL/6 J mice randomly divided into 4 groups, and the experimental groups with TBBPA at 10 n M/kg, 20 n M/kg and 40 n M/kg for 14 consecutive days. Histopathological and ultrastructural analysis showed that the inflammatory cells infiltrated and tissue structure damaged in the lung of mice with exposing to TBBPA. The ROS and MDA levels increase and the T-AOC, GSH-Px, CAT, SOD activities inhibition was found in lung tissue with TBBPA exposure. The expression of autophagy-related factors Beclin-1, P62, LC3-II, ATG5, and ATG7 decreased. The activation of NF-κB/TNF-α pathway indicates the occurrence of inflammation. The expression of Bax, caspase3, caspase7, caspase 9 increase, the expression of Bcl-2 decreased, and the apoptosis pathway activated. The autophagy inducer rapamycin can reverse the adverse effects of inflammation and apoptosis. Taken together, TBBPA inhibits autophagy-induced pneumonia and apoptosis by overproduction ROS.
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Affiliation(s)
- Yanhe Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, PR China
| | - Shuang Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Kan Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Xueying Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Hang Yin
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Shu Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Xue-Jiao Gao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, PR China.
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10
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Yao Y, Zhu W, Han D, Shi X, Xu S. New Insights into How Melatonin Ameliorates Bisphenol A-Induced Colon Damage: Inhibition of NADPH Oxidase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:2566-2578. [PMID: 36633214 DOI: 10.1021/acs.jafc.2c07236] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Bisphenol A (BPA) is an endocrine disruptor, widely employed, and detected in many consumer products and food items. Oral intake poses a great threat to intestinal health. Melatonin (MT) stands out as an endogenous, dietary, and therapeutic molecule with potent antioxidant capacity. To explore the protective effect of MT against BPA-induced colon damage and the role of NADPH oxidase (NOX) in this process, we established mice and colonic epithelial cell (NCM460) models of BPA exposure and treated with MT. In vitro and in vivo results showed that MT ameliorated BPA-induced oxidative stress, DNA damage, and the G2/M cell cycle arrest. MT also downregulated the expression of NOX family-related genes, reversed the inhibition of the base excision repair (BER) pathway, promoted the activation of non-homologous end-joining (NHEJ) pathway, and suppressed the mRNA and protein expression of ATM, Chk1/2, and p53. Diphenyleneiodonium chloride (DPI), a NOX-specific inhibitor, also attenuated the toxic effects of BPA on NCM460 cells. Furthermore, molecular docking revealed that MT could bind to NOX. Conclusively, our finding suggested that MT can ameliorate BPA-induced colonic DNA damage by scavenging NOX-derived ROS, which further attenuates G2/M cell cycle arrest dependent on the ATM-Chk1/2-p53 axis.
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Affiliation(s)
- Yujie Yao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China
| | - Wenjing Zhu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China
| | - Dongxu Han
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China
| | - Xu Shi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China
| | - Shiwen Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China
- Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China
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11
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Zhang Q, Wang S, Wang F, Guo M, Xu S. TBBPA induces inflammation, apoptosis, and necrosis of skeletal muscle in mice through the ROS/Nrf2/TNF-α signaling pathway. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 317:120745. [PMID: 36442820 DOI: 10.1016/j.envpol.2022.120745] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 11/05/2022] [Accepted: 11/24/2022] [Indexed: 06/16/2023]
Abstract
Tetrabromobisphenol A (TBBPA) is present in large quantities in the environment due to its widespread use. And TBBPA is capable of accumulating in animals, entering the ecological chain and causing widespread damage to organisms. TBBPA is capable of causing the onset of oxidative stress, which induces tissue damage and cell death, which in turn affects the physiological function of tissues. Skeletal muscle is a critical tissue for maintaining growth, movement, and health in the body. However, the mechanism of TBBPA-induced skeletal muscle injury remains unclear. In this study, we constructed mouse skeletal muscle models (10, 20, and 40 mg/kg TBBPA) and mouse myoblasts (C2C12) cell models (2,4, and 8 μg/L TBBPA) at different concentrations. The results of this experiment showed that under TBBPA treatment, the levels of reactive oxygen species (ROS) and Malondialdehyde (MDA) in mouse skeletal and C2C12 cells were increased significantly, but the activities of some antioxidant enzymes decreased. TBBPA can inhibit Nuclear factor E2-related factor 2 (Nrf2) entry into the nucleus, thus affecting the expression of the Nrf2 downstream factors. With the increase of TBBPA concentration, the expression levels of inflammatory factors were significantly increased, while the anti-apoptotic factors were significantly decreased. The expression of pro-apoptotic factors increased in a dose-dependent manner. Programmed necrosis-related factors were also significantly elevated. Our results suggest that TBBPA induces oxidative stress and inflammation, apoptosis, and necrosis in the skeletal muscle of mice by regulating Nrf2/ROS/TNF-α signaling pathway.
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Affiliation(s)
- Qirui Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Shengchen Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Fuhan Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Mengyao Guo
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Shiwen Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China.
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Sunday OE, Bin H, Guanghua M, Yao C, Zhengjia Z, Xian Q, Xiangyang W, Weiwei F. Review of the environmental occurrence, analytical techniques, degradation and toxicity of TBBPA and its derivatives. ENVIRONMENTAL RESEARCH 2022; 206:112594. [PMID: 34973196 DOI: 10.1016/j.envres.2021.112594] [Citation(s) in RCA: 55] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 11/08/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
BFRs (brominated flame retardants) are a class of compounds that are added to or applied to polymeric materials to avoid or reduce the spread of fire. Tetrabromobisphenol A (TBBPA) is one of the known BFR used many in industries today. Due to its wide application as an additive flame retardant in commodities, TBBPA has become a common indoor contaminant. Recent researches have raised concerns about the possible hazardous effect of exposure to TBBPA and its derivatives in humans and wildlife. This review gives a thorough assessment of the literature on TBBPA and its derivatives, as well as environmental levels and human exposure. Several analytical techniques/methods have been developed for sensitive and accurate analysis of TBBPA and its derivatives in different compartments. These chemicals have been detected in practically every environmental compartment globally, making them a ubiquitous pollutant. TBBPA may be subject to adsorption, biological degradation or photolysis, photolysis after being released into the environment. Treatment of TBBPA-containing waste, as well as manufacturing and usage regulations, can limit the release of these chemicals to the environment and the health hazards associated with its exposure. Several methods have been successfully employed for the treatment of TBBPA including but not limited to adsorption, ozonation, oxidation and anaerobic degradation. Previous studies have shown that TBBPA and its derivative cause a lot of toxic effects. Diet and dust ingestion and have been identified as the main routes of TBBPA exposure in the general population, according to human exposure studies. Toddlers are more vulnerable than adults to be exposed to indoor dust through inadvertent ingestion. Furthermore, TBBP-A exposure can occur during pregnancy and through breast milk. This review will go a long way in closing up the knowledge gap on the silent and over ignored deadly effects of TBBPA and its derivatives and their attendant consequences.
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Affiliation(s)
- Okeke Emmanuel Sunday
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, 212013, PR China; Department of Biochemistry, Faculty of Biological Sciences & Natural Science Unit, SGS, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria
| | - Huang Bin
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, 212013, PR China
| | - Mao Guanghua
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, 212013, PR China
| | - Chen Yao
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, 212013, PR China
| | - Zeng Zhengjia
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, 212013, PR China
| | - Qian Xian
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, 212013, PR China
| | - Wu Xiangyang
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, 212013, PR China.
| | - Feng Weiwei
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, 212013, PR China.
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13
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Li X, Zhang J, Du C, Jiang Y, Zhang W, Wang S, Zhu X, Gao J, Zhang X, Ren D, Zheng Y, Tang J. Polyhexamethylene guanidine aerosol triggers pulmonary fibrosis concomitant with elevated surface tension via inhibiting pulmonary surfactant. JOURNAL OF HAZARDOUS MATERIALS 2021; 420:126642. [PMID: 34329089 DOI: 10.1016/j.jhazmat.2021.126642] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 06/26/2021] [Accepted: 07/12/2021] [Indexed: 06/13/2023]
Abstract
Environmental chemicals inhalation exposure could induce pulmonary fibrosis, which is characterized by the excessive proliferation of fibroblasts and accumulation of extracellular matrix components, in which surface tension usually plays vital roles. Polyhexamethylene guanidine (PHMG) was first recognized as a potential hazard ingredient in humidifier disinfectants, which caused an outbreak of pulmonary fibrosis in South Korea. However, the underlying mechanisms involved in PHMG-induced pulmonary fibrosis have not yet been fully elucidated. Therefore, this study mainly focuses on the effect of PHMG on surface tension to unveil the influence and involved mechanisms in PHMG-induced pulmonary fibrosis. C57BL/6J mice were exposed to sub-acute PHMG aerosol for 8 weeks. The results indicated that PHMG induced pulmonary fibrosis combined with elevated surface tension. Results from in vitro study further confirmed PHMG elevated surface tension by inhibited pulmonary surfactant. Mechanistically, PHMG suppressed the key surfactant protein SP-B and SP-C by inhibiting protein expression and block their active sites. The present study, for the first time, revealed the molecular mechanism of PHMG-induced pulmonary fibrosis based on pulmonary surfactant inhibition mediated surface tension elevated. And pulmonary surfactant may be a potential target for further intervention to prevent PHMG-induced fibrosis or alleviate the symptom of relevant patients.
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Affiliation(s)
- Xin Li
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Jianzhong Zhang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Chao Du
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Yingying Jiang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Wanjun Zhang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Shuo Wang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Xiaoxiao Zhu
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Jinling Gao
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Xinru Zhang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Dunqiang Ren
- Department of Respiratory Medicine, Affiliated Hospital of Medical College of Qingdao University, Qingdao 266021, China
| | - Yuxin Zheng
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Jinglong Tang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China.
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14
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Lu L, Hu J, Li G, An T. Low concentration Tetrabromobisphenol A (TBBPA) elevating overall metabolism by inducing activation of the Ras signaling pathway. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125797. [PMID: 33878653 DOI: 10.1016/j.jhazmat.2021.125797] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/09/2021] [Accepted: 03/29/2021] [Indexed: 06/12/2023]
Abstract
Tetrabromobisphenol A (TBBPA), one of the most common flame retardants, affects neurodevelopment, disrupts the endocrine system, and increases the possibility of tumorigenesis. This study investigates the cytotoxic effects, genetic effects, and metabolic effects from exposure to low concentration TBBPA. The cell exposure was measured by mimicking the residual TBBPA concentrations in human plasma, specifically in occupational populations. Our results revealed that long-term TBBPA exposure, especially at 1 nM concentration, significantly promoted the proliferation of HepG2 cells. Furthermore, long-term TBBPA exposure can double the levels of reactive oxygen species (ROS) released from mitochondria, thereby increasing Adenosine Monophosphate activated Protein kinase (AMPK) gene expression level to promote cellular proliferation. However, ROS can also mediate the apoptosis process through the mitochondrial membrane potential (MMP). The RNA-seq analysis confirmed that the Ras signaling pathway was activated by the growth factor to mediate cell detoxification mechanism, increasing lipid and vitamin metabolic rate. Our work uncovers a cellular mechanism by which long-term exposure to low concentration TBBPA can induce the activation of the Ras signaling pathway and demonstrates potential metabolic disorder in the human hepatic cells upon plasma TBBPA exposure.
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Affiliation(s)
- Lirong Lu
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Junjie Hu
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution control, Guangdong University of Technology, Guangzhou 510006, China
| | - Guiying Li
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Taicheng An
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
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15
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An J, Yao W, Tang W, Jiang J, Shang Y. Hormesis Effect of Methyl Triclosan on Cell Proliferation and Migration in Human Hepatocyte L02 Cells. ACS OMEGA 2021; 6:18904-18913. [PMID: 34337230 PMCID: PMC8320140 DOI: 10.1021/acsomega.1c02127] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 07/01/2021] [Indexed: 05/26/2023]
Abstract
Methyl triclosan (mTCS) is a methylated derivative of triclosan (TCS), which is extensively used as an antimicrobial component of various nursing products and disinfectants. Current research studies of mTCS mainly focused on the environmental persistence and bioaccumulation potential. Knowledge regarding the toxicity and carcinogenicity of mTCS is limited until now. In this study, the human hepatocyte L02 cells were used to investigate the cellular effects of mTCS under different concentrations (0.1-60 μM). The hormesis effect was observed where a low dose of mTCS (≤5 μM) exposure stimulated the cell proliferation ability, while high-dose exposure (≥20 μM) inhibited cell proliferation. In the same time, low doses of mTCS (0.5 and 1 μM) induced enhanced anchorage-independent proliferation ability and cell migration ability, indicating a positive effect on malignant transformation in L02 cells. Moreover, reactive oxygen species productions were significantly increased after mTCS exposure (≥1 μM), as compared with the control group. Furthermore, expressions of tumor-related genes, mouse double minute 2 (MDM2), matrix metalloproteinase 9 (MMP9), and proliferating cell nuclear antigen (PCNA), and proto-oncogene MYC (c-Myc), Jun, and FosB were significantly upregulated, while no significant changes were observed on expressions of apoptosis-related and cell cycle-related genes in L02 cells after exposure of low-dose mTCS. In conclusion, these results indicated that a low dose of mTCS had a hormesis effect in L02 cells on cell proliferation and malignant transformation in vitro, which might be mediated through oxidative stress response.
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16
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Jin X, Su H, Xu L, Wang Y, Su R, Zhang Z, Guan G, Li Z. Different co-culture models reveal the pivotal role of TBBPA-promoted M2 macrophage polarization in the deterioration of endometrial cancer. JOURNAL OF HAZARDOUS MATERIALS 2021; 413:125337. [PMID: 33609860 DOI: 10.1016/j.jhazmat.2021.125337] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/18/2021] [Accepted: 02/03/2021] [Indexed: 06/12/2023]
Abstract
Tetrabromobisphenol A (TBBPA), an emerging organic pollutant widely detected in human samples, has a positive correlation with the development of endometrial cancer (EC), but its underlying mechanisms have not yet been fully elucidated. Tumor-associated macrophages (TAM), one of the most vital components in tumor microenvironment (TME), play regulatory roles in the progression of EC. Consequently, this study mainly focuses on the macrophage polarization in TME to unveil the influence of TBBPA on the progression of EC and involved mechanisms. Primarily, low doses of TBBPA treatment up-regulated M2-like phenotype biomarkers in macrophage. The data from in vitro co-culture models suggested TBBPA-driven M2 macrophage polarization was responsible for the EC deterioration. Results from in vivo study further confirmed the malignant proliferation of EC promoted by TBBPA. Mechanistically, TBBPA-mediated miR-19a bound to the 3'-UTR regions of SOCS1, resulting in down-regulation of SOCS1 followed by the phosphorylation of JAK and STAT6. The present study not only revealed for the first time the molecular mechanism of TBBPA-induced EC's deterioration based on macrophage polarization, but also established co-culture models, thus providing a further evaluation method for the exploration of environmental pollutants-induced tumor effects from the role of TME.
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Affiliation(s)
- Xiaoting Jin
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan, China; School of Public Health, Qingdao University, Qingdao, China
| | - Huilan Su
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan, China; Institutes of Biomedical Sciences, Shanxi University, Taiyuan, China
| | - Liting Xu
- School of Public Health, Qingdao University, Qingdao, China
| | - Yu Wang
- School of Public Health, Qingdao University, Qingdao, China
| | - Ruijun Su
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan, China; Department of Biology, Taiyuan Normal University, Taiyuan, China
| | - Ze Zhang
- School of Public Health, Qingdao University, Qingdao, China
| | - Ge Guan
- School of Public Health, Qingdao University, Qingdao, China
| | - Zhuoyu Li
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan, China; Institutes of Biomedical Sciences, Shanxi University, Taiyuan, China.
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17
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Guan Y, Zhao X, Song N, Cui Y, Chang Y. Albicanol antagonizes Cd-induced apoptosis through a NO/iNOS-regulated mitochondrial pathway in chicken liver cells. Food Funct 2021; 12:1757-1768. [PMID: 33502412 DOI: 10.1039/d0fo03270k] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Cadmium (Cd) induces hepatocyte injury by oxidative stress. Albicanol is a sesquiterpenoid extracted from the medicinal plant Dryopteris fragrans that has previously been shown to exhibit anti-aging and antioxidant activity. In this study, we explored the mechanism of albicanol inhibition of the Cd-induced apoptosis of chicken hepatoma cells (LMH) by treating these cells with CdCl2 (25 μM) and/or albicanol (2.5 × 10-5 μg mL-1) for 24 h. Under Cd treatment, the research results showed that the apoptosis rate markedly increased in LMH cells. In addition, the iNOS activity and NO content increased significantly, which promoted the expressions of genes associated with the mitochondrial apoptosis pathway (Bax, CytC, Caspase-3 and Caspase-9) and inhibited the expression of Bcl-2 in this pathway. However, Cd + albicanol co-treatment significantly reduced the apoptosis rate and the expressions of iNOS and genes associated with the mitochondrial apoptosis pathway (Bax, CytC, Caspase-3 and Caspase-9), and promoted the expression of Bcl-2 in this pathway. In addition, molecular docking supported a link between the albicanol ligand and the iNOS receptor. These results indicated that albicanol can inhibit Cd-induced apoptosis by regulating the NO/iNOS-mediated mitochondrial pathway.
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Affiliation(s)
- Yalin Guan
- College of Life Science, Northeast Agricultural University, Harbin, 150030, China.
| | - Xia Zhao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Nuan Song
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Yuan Cui
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Ying Chang
- College of Life Science, Northeast Agricultural University, Harbin, 150030, China.
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18
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Liu J, Zhang L, Lu G, Jiang R, Yan Z, Li Y. Occurrence, toxicity and ecological risk of Bisphenol A analogues in aquatic environment - A review. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 208:111481. [PMID: 33120264 DOI: 10.1016/j.ecoenv.2020.111481] [Citation(s) in RCA: 163] [Impact Index Per Article: 54.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 10/07/2020] [Accepted: 10/09/2020] [Indexed: 05/12/2023]
Abstract
Bisphenol analogues (BPs) have been widely applied to industry as the substitutes for bisphenol A (BPA), which have been detected frequently in surface water, sediment, sewage and sludge. The presence of BPs in natural environment could pose risks to the aquatic ecosystem and human health. This study outlined the occurrence, toxicity of BPs in aquatic environment and manifested their potential ecological risk to the aquatic ecosystem throughout the world. As for occurrence, BPA was losing its dominance, while BPs were occupying a large part, especially for bisphenol S (BPS), bisphenol F (BPF) and bisphenol AF (BPAF). In some heavily polluted areas, BPs concentration reached µg/L in aquatic environment, which in the effluent of sewage plants was higher than that in the surface water. BPs content in sludge and sediment was more than that in the aqueous phase. All BPs other than BPS and Bisphenol P (BPP) had moderate toxicity. The current data supports that exposure to BPs may have adverse effects on dysfunction of endocrine system such as thyroid hormone concentration, enzyme activity, and even cell dysfunction, gene damage and chromosomal abnormalities. According to the risk quotient (RQ), BPF shows the highest ecological risk in China, Japan and South Korea, followed by BPA and BPS. The occurrence of bisphenols and their neurotoxicity on aquatic organisms merit further investigation.
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Affiliation(s)
- Jianchao Liu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Lingyu Zhang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Guanghua Lu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China; Water Conservancy Project & Civil Engineering College, Tibet Agriculture & Animal Husbandry University, Linzhi 860000, China.
| | - Runren Jiang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Zhenhua Yan
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Yiping Li
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
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Guan G, Su H, Wei X, Zheng Y, Jin X. The promotion of tetrabromobisphenol A exposure on Ishikawa cells proliferation and pivotal role of ubiquitin-mediated IκB' degradation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 207:111254. [PMID: 32890954 DOI: 10.1016/j.ecoenv.2020.111254] [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: 04/21/2020] [Revised: 08/05/2020] [Accepted: 08/25/2020] [Indexed: 06/11/2023]
Abstract
Tetrabromobisphenol A (TBBPA), one of the highly common industrial brominated flame retardants (BFRs), has been recently reported to influence the progression of endometrial carcinoma. However, the underlying mechanism between them has not been fully illuminated. Our findings demonstrated that treatment with low concentrations of TBBPA significantly induced the proliferation of Ishikawa cells in a concentration- and time-dependent manner. Mechanically, TBBPA stimulation led to the elevation of NF-κB expression, accompanied by the occurrence of ubiquitin-mediated IκB' degradation. Additionally, the upregulation of pro-inflammatory cytokines upon TBBPA exposure was observed in both mRNA and protein levels. Interestingly, the above toxic effects of TBBPA on Ishikawa cells were markedly attenuated by the addition of MG-132, a proteasome inhibitor, suggesting the crucial role of ubiquitin-mediated IκB' degradation in the TBBPA-stimulated proliferation of Ishikawa cells. Confirmation using in vivo model was also presented in this work. Accordingly, our data indicated that ubiquitin-mediated IκB' degradation and inflammatory response could serve as critical and sensitive biomarkers for the TBBPA-induced endometrial carcinoma, which would be helpful for the future carcinogenic risk assessments of TBBPA exposure on uterus.
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Affiliation(s)
- Ge Guan
- School of Public Health, Qingdao University, Qingdao, China
| | - Huilan Su
- Institutes of Biomedical Sciences, Shanxi University, Taiyuan, China
| | - Xiaoran Wei
- School of Public Health, Qingdao University, Qingdao, China
| | - Yuxin Zheng
- School of Public Health, Qingdao University, Qingdao, China
| | - Xiaoting Jin
- School of Public Health, Qingdao University, Qingdao, China.
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