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Havrylyuk D, Heidary DK, Glazer EC. The Impact of Inorganic Systems and Photoactive Metal Compounds on Cytochrome P450 Enzymes and Metabolism: From Induction to Inhibition. Biomolecules 2024; 14:441. [PMID: 38672458 PMCID: PMC11048704 DOI: 10.3390/biom14040441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/25/2024] [Accepted: 03/30/2024] [Indexed: 04/28/2024] Open
Abstract
While cytochrome P450 (CYP; P450) enzymes are commonly associated with the metabolism of organic xenobiotics and drugs or the biosynthesis of organic signaling molecules, they are also impacted by a variety of inorganic species. Metallic nanoparticles, clusters, ions, and complexes can alter CYP expression, modify enzyme interactions with reductase partners, and serve as direct inhibitors. This commonly overlooked topic is reviewed here, with an emphasis on understanding the structural and physiochemical basis for these interactions. Intriguingly, while both organometallic and coordination compounds can act as potent CYP inhibitors, there is little evidence for the metabolism of inorganic compounds by CYPs, suggesting a potential alternative approach to evading issues associated with rapid modification and elimination of medically useful compounds.
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Affiliation(s)
| | - David K. Heidary
- Department of Chemistry, North Carolina State University, Raleigh, NC 27067, USA;
| | - Edith C. Glazer
- Department of Chemistry, North Carolina State University, Raleigh, NC 27067, USA;
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Moselhy WA, Ibrahim MA, Khalifa AG, El-Nahass ES, Hassan NEHY. The effects of TiO2, ZnO, IONs and Al2O3 metallic nanoparticles on the CYP1A1 and NBN transcripts in rat liver. Toxicol Res (Camb) 2024; 13:tfae034. [PMID: 38559758 PMCID: PMC10980790 DOI: 10.1093/toxres/tfae034] [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: 09/04/2023] [Revised: 01/04/2024] [Accepted: 02/22/2024] [Indexed: 04/04/2024] Open
Abstract
Introduction Metal oxide nanoparticles are currently used widely in many aspects of human and animal life with broad prospects for biomedical purposes. The present work was carried out to investigate the effects of orally administrated TiO2NPs, ZnONPs, IONs and Al2O3NPs on the mRNA expression level of CYP 1A1 and NBN in the rat liver. Materials and Methods Four groups of male Albino rats were given their respective treatment orally for 60 days in a dose of 1/20 of the LD50 TiO2NPs (600 mg/Kg b.wt/day), ZnONPs (340 mg/Kg b.wt/day), IONs (200 mg/kg b.wt/day) and Al2O3NPs (100 mg/Kg b.wt/day) and a fifth group served as a control group. Rresults The mRNA level of CYP 1A1 and NBN showed up-regulation in all the NPs-treated groups relative to the control group. ZnONPs group recorded the highest expression level while the TiO2NPs group showed the lowest expression level transcript. Conclusion:The toxic effects produced by these nanoparticles were more pronounced in the case of zinc oxide, followed by aluminum oxide, iron oxide nanoparticles and titanium dioxide, respectively.
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Affiliation(s)
- Walaa A Moselhy
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - Marwa A Ibrahim
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Cairo University, Giza, Cairo 12211, Egypt
| | - Ahlam G Khalifa
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - El-Shaymaa El-Nahass
- Department of Pathology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - Nour El-Houda Y Hassan
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt
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Wang H, Han Q, Chen Y, Hu G, Xing H. Novel insights into cytochrome P450 enzyme and solute carrier families in cadmium-induced liver injury of pigs. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 211:111910. [PMID: 33444879 DOI: 10.1016/j.ecoenv.2021.111910] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 01/01/2021] [Accepted: 01/05/2021] [Indexed: 06/12/2023]
Abstract
Cadmium (Cd) is a typical pollutant and carcinogen in environment. Exposure assessment of contaminants is an important component of occupational and environmental epidemiological studies. Early studies of Cd have focused on aquatic animals, chickens and rats. However, toxicological evaluation of Cd in pigs has not been reported. Therefore, twelve pigs were randomly divided into two groups (n = 6): the control group and the Cd group (Cd content: 15 ± 0.242 mg/kg feed) in this study, the experimental period was 30 d, and the toxic effects of Cd on the liver of weanling piglets were examined by antioxidant function, liver function, Cd content, histological examination and transcriptomics. The results showed that the changes of antioxidant function, liver function and Cd content were significant in the liver. Transcriptional profiling results showed that 399 differentially expressed genes (DEGs) were significantly up-regulated while 369 DEGs were remarkably down-regulated in Cd group, and which were concentrated in three ontologies: molecular function, cellular component and biological processes. Interestingly, significant changes in some genes of the cytochrome P450 enzyme (CYP450) and solute carrier (SLC) families have been observed and were consistent with qRT-PCR results. In conclusion, Cd could cause liver injury in weanling piglets and change the transcriptomic characteristics of liver. CYP450 and SLC families play an indispensable role in Cd-mediated hepatotoxicity. Importantly, changes in mRNA levels of CYP2B22, CYP7A1, CYP8B1, SLC26A8, SLC11A1, SLC27A2 and SLC22A7 induced by Cd have been reported for the first time. Our findings will provide a new insight for better assessing the mechanism of Cd toxicity to the liver.
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Affiliation(s)
- Huan Wang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Qi Han
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Yongjie Chen
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Guanghui Hu
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China.
| | - Houjuan Xing
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China.
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Ren X, Xu Y, Yu Z, Mu C, Liu P, Li J. The role of Nrf2 in mitigating cadmium-induced oxidative stress of Marsupenaeus japonicus. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 269:116112. [PMID: 33272803 DOI: 10.1016/j.envpol.2020.116112] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 11/15/2020] [Accepted: 11/17/2020] [Indexed: 06/12/2023]
Abstract
Nuclear factor-erythroid 2-related factor-2 (Nrf2) is an important modulator of cellular responses against Cd in mammalian cells. However, whether such modulation is conserved in Marsupenaeus japonicas remains unknown.In our study, the shrimps were injected with dsRNA targeting Nrf2 at 4 μg g-1 body weight (b.w.) or sulforaphane (SFN) at 5 μg g-1 b.w., and then were exposed to 40 mg L-1 CdCl2 for 48 h. After Nrf2 knockdown, the Cd content increased, but decreased in the SFN group. This suggested that Nrf2 could promote Cd excretion. A terminal deoxynulceotidyl transferase nick-end-labeling (TUNEL) assay revealed that the Nrf2 knockdown increased the number of apoptotic cells in M. japonicas, while SFN decreased the number of apoptotic cells. After Nrf2 knockdown, the total antioxidant capacity (T-AOC), superoxide dismutase (Sod) activity, and related gene expression decreased significantly, while the malondialdehyde (MDA) content increased remarkably. By contrast, SFN injection alleviated the oxidative stress, as evidenced by increased T-AOC, Sod activity, sod mRNA expression and a reduced MDA content. Similarly, detoxification related enzyme activities (ethoxyresorufin O-deethylase and glutathione-S-transferase (GST)) and their corresponding gene expressions (cyp3a (cytochrome P450 family 3 subfamily A) and gst) were suppressed in the ds-Nrf2 injection group, while they were elevated in the SFN group. In addition, ds-Nrf2 activated mitochondrial apoptotic pathway, as evidenced the mRNA and protein levels of caspase-3, Bcl2 associated X protein (Bax), and p53, while SFN treatment suppressed them. These results displayed that in M. japonicus Cd-induced cellular oxidative damage probably acts via the Nrf2 pathway.
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Affiliation(s)
- Xianyun Ren
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, PR China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, PR China
| | - Yao Xu
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, PR China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, PR China; Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang, PR China
| | - Zhenxing Yu
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, PR China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, PR China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, PR China
| | - Cuimin Mu
- Aquaculture Research Lab, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian, PR China
| | - Ping Liu
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, PR China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, PR China
| | - Jian Li
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, PR China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, PR China.
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Guo K, Ge J, Zhang C, Lv MW, Zhang Q, Talukder M, Li JL. `Cadmium induced cardiac inflammation in chicken (Gallus gallus) via modulating cytochrome P450 systems and Nrf2 mediated antioxidant defense. CHEMOSPHERE 2020; 249:125858. [PMID: 32062552 DOI: 10.1016/j.chemosphere.2020.125858] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 01/03/2020] [Accepted: 01/05/2020] [Indexed: 06/10/2023]
Abstract
Cadmium (Cd) has been implicated in the pathogenesis of inflammation, myocardial infarction, angiocardiopathy, even cancers. However, it is unknown that Cd-induced cardiac toxicity through Nrf2-mediate antioxidant defense and Cytochrome P450 (CYP450) system. To ascertain the chemoprevention of Cd-induced cardiac toxicity, total 60 newborn chicks were fed with different doses of Cd (0 mg/kg, 35 mg/kg and 70 mg/kg) for a period of 90 days feed administration. Results indicated Cd exposure caused cardiac histopathology changed and functions abnormal, induced NOS activities raised and cardiac inflammation, triggering inflammation factors (IL-6, IL-8, TNF-α, and NF-κb) upregulation and inhabitation of IL-10. Cd caused increase of total CYP450 and Cytochrome b5 (Cyt b5) contents, while erythromycin N-demethylase (ERND), aminopyrin N-demethylase (APND), aniline-4-hydeoxylase (AH) and NADPH-cytochrome c reductase (NCR) indicated opposite situations with different degrees of reduction in microsomes. The mRNA level of most CYP450s isoforms (CYP1A1, CYP1A2, CYP1A5, CYP1B1, CYP2C18, CYP2C45, CYP3A4, CYP3A7 and CYP3A9) were significantly increase but CYP2D6 expression level changed not obvious. Furthermore, Cd treatment caused increased the peroxidation product (MDA) and H2O2 over accumulation, the decreased of T-AOC accompanied by decreased activity of antioxidant enzymes (T-SOD, GST and GPX). Over accumulation of Cd lead to oxidative stress and activated Nrf2 signal pathway through upregulating pivotal target genes (HO-1, NQO1, GCLC, GCLM and SOD). These findings suggested Cd exposure caused cardiotoxicity through CYP450s enzymes homeostasis disturbance and Nrf2-mediated oxidative stress signal pathways defense. These results may provide new evidence on molecular mechanism of Cd-induced cardiac toxicity.
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Affiliation(s)
- Kai Guo
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China; Chifeng Animal Health Supervision Institute, Chifeng County, 024000, PR China.
| | - Jing Ge
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China.
| | - Cong Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China.
| | - Mei-Wei Lv
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China.
| | - Qi Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China.
| | - Milton Talukder
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China; Department of Physiology and Pharmacology, Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Barishal, 8210, Bangladesh.
| | - Jin-Long Li
- 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, Northeast Agricultural University, Harbin, 150030, PR China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin, 150030, PR China.
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Weber AA, Sales CF, de Souza Faria F, Melo RMC, Bazzoli N, Rizzo E. Effects of metal contamination on liver in two fish species from a highly impacted neotropical river: A case study of the Fundão dam, Brazil. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 190:110165. [PMID: 31918258 DOI: 10.1016/j.ecoenv.2020.110165] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/13/2019] [Accepted: 01/02/2020] [Indexed: 06/10/2023]
Abstract
Environmental disasters such as the rupturing of mine tailings dams are a major concern worldwide. In the present study, we assess the effects of the release of mine waste due to the rupture of the Fundão dam on two native fish species (Hoplias intermedius and Hypostomus affinis) from the Doce River basin. Two sampling sites were chosen: S1, a reference site, and S2, contaminated by mining waste. Water and sediment were collected to evaluate metals concentration. Adult fish were caught to analyse biological parameters, hepatic histopathology, and biomarkers of metal contamination. Compared to site S1, the concentration of manganese was statistically higher in water while lead, nickel, and arsenic were statistically higher in the sediment from site S2, and iron had no significant difference between sites. At site S1, fish of both species presented hepatic tissue with normal architecture. At site S2, hepatic alterations, such as cytoplasmic vacuolization and necrosis were frequently found in both species. Regarding the histopathological index, higher values were found in both species from site S2. The positive antibody reactions for cytochrome P450 1A (CYP1A) and metallothionein (MT) were statistically greater in site S2 for both species. The oxidative stress biomarkers, superoxide dismutase (SOD) and catalase (CAT) were statistically higher in H. intermedius from site S2, but only CAT was statistically greater in H. affinis at site S2. These results demonstrate that the release of mineral residues from the rupture of the Samarco mine dam is provoking hepatic damage in the fish from the Doce River besides inducing the expression of proteins and enzymes related to metal contamination.
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Affiliation(s)
- André Alberto Weber
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, UFMG, Belo Horizonte, C.P.486, 30161-970, Minas Gerais, Brazil
| | - Camila Ferreira Sales
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, UFMG, Belo Horizonte, C.P.486, 30161-970, Minas Gerais, Brazil
| | - Francisco de Souza Faria
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, UFMG, Belo Horizonte, C.P.486, 30161-970, Minas Gerais, Brazil
| | - Rafael Magno Costa Melo
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, UFMG, Belo Horizonte, C.P.486, 30161-970, Minas Gerais, Brazil
| | - Nilo Bazzoli
- Programa de Pós-graduação em Zoologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, PUC Minas, Belo Horizonte, 30535-610, Minas Gerais, Brazil
| | - Elizete Rizzo
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, UFMG, Belo Horizonte, C.P.486, 30161-970, Minas Gerais, Brazil.
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Pan Y, Ong CE, Pung YF, Chieng JY. The current understanding of the interactions between nanoparticles and cytochrome P450 enzymes – a literature-based review. Xenobiotica 2018; 49:863-876. [DOI: 10.1080/00498254.2018.1503360] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Yan Pan
- Department of Biomedical Science, The University of Nottingham Malaysia Campus, Semenyih, Malaysia
| | - Chin Eng Ong
- School of Pharmacy, International Medical University, Kuala Lumpur, Malaysia
| | - Yuh Fen Pung
- Department of Biomedical Science, The University of Nottingham Malaysia Campus, Semenyih, Malaysia
| | - Jin Yu Chieng
- Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
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Chen YY, Chan KM. Transcriptional inhibition of TCDD-mediated induction of cytochrome P450 1A1 and alteration of protein expression in a zebrafish hepatic cell line following the administration of TCDD and Cd 2. Toxicol Lett 2017; 282:121-135. [PMID: 29107029 DOI: 10.1016/j.toxlet.2017.10.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 10/24/2017] [Accepted: 10/25/2017] [Indexed: 12/27/2022]
Abstract
We studied the effects of Cd2+ on TCDD-mediated induction of the cytochrome P450 1A1 (cyp1a1) gene using a zebrafish liver cell line (ZFL). Our results showed that Cd2+ inhibited the TCDD-mediated induction of the cyp1a1 protein, enzyme activity, and mRNA expression level. Cd2+ also down-regulated levels of the aryl hydrocarbon receptor (ahr2) and the aryl hydrocarbon receptor nuclear translocator 2b (arnt2b) mRNAs. Compared with TCDD (3nM) treatment alone, co-treatment with Cd2+ (0-30μM) and TCDD (3nM) significantly inhibited the activity of the luciferase reporter gene constructs harboring the distal promoter region (P-2626/-2009) of CYP1A1 and the synthetic 3XRE gene promoter. This indicates that Cd2+ decreased the level of TCDD-induced cyp1a1 through transcriptional inhibition. Proteomic analysis was also used to evaluate the effect of Cd2+ on TCDD-altered protein expression in ZFL cells. The identified proteins are mainly enzymes of the glycolysis pathway and proteasomes, and have anti-oxidative and anti-stress effects.
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Affiliation(s)
- Ying Ying Chen
- School of Life Sciences, Faculty of Science, Chinese University, Sha Tin, Hong Kong
| | - King Ming Chan
- School of Life Sciences, Faculty of Science, Chinese University, Sha Tin, Hong Kong.
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Benhamed S, Guardiola FA, Martínez S, Martínez-Sánchez M, Pérez-Sirvent C, Mars M, Esteban MA. Exposure of the gilthead seabream ( Sparus aurata) to sediments contaminated with heavy metals down-regulates the gene expression of stress biomarkers. Toxicol Rep 2016; 3:364-372. [PMID: 28959558 PMCID: PMC5615830 DOI: 10.1016/j.toxrep.2016.02.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 02/08/2016] [Accepted: 02/22/2016] [Indexed: 12/30/2022] Open
Abstract
Heavy metals incidence in the aquatic environment and its accumulation in fish are under constant review. Gilthead seabream (Sparus aurata) specimens were exposed for two weeks to sediments highly concentrated in metals, collected at the Portman Bay (Murcia, Spain). The metals bioaccumulation was tested in liver, muscle and skin. The potential of the sediment exposure to induce variation of the stress biomarkers genes was conducted in liver and skin. Results revealed that sediments were highly contaminated with metals. However, following 2 weeks exposure to the sediments, Cd accumulates only in liver. Interestingly, the expression of the genes mta, hsp 70 and hsp 90 were significantly down-regulated in skin. Nevertheless, cyp1a1 gene was up-regulated only in liver. Results uphold that the stress response magnitude was organ-dependent and the skin was the most responsive tissue to metal stress conditions. These results suggest that skin should be considered as target organ for biomarkers analysis in fishes.
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Affiliation(s)
- Said Benhamed
- Laboratory of Microbiology, Research Unity of biodiversity and valorisation of bioressources in arid zones, University of Gabes, Faculty of Sciences of Gabes, Tunisia
| | - Francisco A. Guardiola
- Fish innate immune system group. Department of Cell Biology & Histology, Faculty of Biology. Regional Campus of International Excellence “Campus Mare Nostrum”, University of Murcia, Spain
| | - Salvadora Martínez
- Department of Agricultural Chemistry, Geology and Pedology, Faculty of Chemistry, Regional Campus of International Excellence “Campus Mare Nostrum”, University of Murcia, Spain
| | - M.J. Martínez-Sánchez
- Department of Agricultural Chemistry, Geology and Pedology, Faculty of Chemistry, Regional Campus of International Excellence “Campus Mare Nostrum”, University of Murcia, Spain
| | - Carmen Pérez-Sirvent
- Department of Agricultural Chemistry, Geology and Pedology, Faculty of Chemistry, Regional Campus of International Excellence “Campus Mare Nostrum”, University of Murcia, Spain
| | - Mohammed Mars
- Laboratory of Microbiology, Research Unity of biodiversity and valorisation of bioressources in arid zones, University of Gabes, Faculty of Sciences of Gabes, Tunisia
| | - María A. Esteban
- Fish innate immune system group. Department of Cell Biology & Histology, Faculty of Biology. Regional Campus of International Excellence “Campus Mare Nostrum”, University of Murcia, Spain
- Corresponding author at: Department of Cell Biology and Histology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain.
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Sang X, Ze X, Gui S, Wang X, Hong J, Ze Y, Zhao X, Sheng L, Sun Q, Yu X, Wang L, Hong F. Kidney injury and alterations of inflammatory cytokine expressions in mice following long-term exposure to cerium chloride. ENVIRONMENTAL TOXICOLOGY 2014; 29:1420-1427. [PMID: 23712967 DOI: 10.1002/tox.21872] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2012] [Revised: 04/15/2013] [Accepted: 04/16/2013] [Indexed: 06/02/2023]
Abstract
It has been demonstrated that the organic damages of animals can be caused by exposure to lanthanide oxides or compounds. However, the molecular mechanism of CeCl3 -induced kidney injury remains unclear. In this study, the mechanism of nephric damage in mice induced by an intragastric administration of CeCl3 was investigated. The results showed that Ce(3+) was accumulated in the kidney, which in turn led to oxidative stress, severe nephric inflammation, and dysfunction in mice. Furthermore, CeCl3 activated nucleic factor κB, which in turn increased the expression levels of tumor necrosis factor α, macrophage migration inhibitory factor, interleukin-2, interleukin-4, interleukin-6, interleukin-8, interleukin-10, interleukin-18, interleukin-1β, cross-reaction protein, transforming growth factor-β, interferon-γ, and CYP1A1, while suppressed heat shock protein 70 expression. These findings implied that Ce(3+) -induced kidney injury of mice might be associated with oxidative stress, alteration of inflammatory cytokine expression, and reduction of detoxification of CeCl3 .
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Affiliation(s)
- Xuezi Sang
- Medical College of Soochow University, Suzhou, 215123, China
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Dupuy C, Galland C, Devaux A, Bony S, Loizeau V, Danion M, Pichereau V, Fournier M, Laroche J. Responses of the European flounder (Platichthys flesus) to a mixture of PAHs and PCBs in experimental conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:13789-13803. [PMID: 24504773 DOI: 10.1007/s11356-014-2563-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 01/16/2014] [Indexed: 06/03/2023]
Abstract
A multibiomarker approach was developed to evaluate the juvenile European flounder responses to a complex mixture of 9 polycyclic aromatic hydrocarbons (PAHs) and 12 polychlorinated biphenyls (PCBs). Exposure was performed through contaminated food pellets displaying: (1) PAH and PCB levels similar to those detected in the heavily polluted Seine estuary, respectively in sediments and in flatfish and (2) ten times these concentrations. Several biomarkers of the immune system (e.g., lysozyme concentration and gene expression of complement component C3 and TNF-receptor), DNA damage (e.g., Comet assay), energetic metabolism (e.g., activity of cytochrome C oxidase), detoxification process (e.g., cytochrome P450 1A1 expression level: CYP1A1; betaine homocysteine methyl transferase expression level: BHMT) were investigated after 14 and 29 days of contamination, followed by a 14-days recovery period. After 29 days of contamination, the detoxification activity (CYP1A1 expression level) was positively correlated with DNA damages; the increase of the BHMT expression level could also be related to the detoxification process. Furthermore, after the recovery period, some biomarkers were still upregulated (i.e., CYP1A1 and BHMT expression levels). The immune system was significantly modulated by the chemical stress at the two concentration levels, and the lysozyme appeared to be the most sensitive marker of the mixture impact.
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Affiliation(s)
- Célie Dupuy
- UMR 6539 CNRS/UBO/IRD/Ifremer, Laboratoire des Sciences de l'Environnement Marin LEMAR, Institut Universitaire Européen de la Mer, Université Européenne de Bretagne, Université de Bretagne occidentale, Plouzané, 29280, France,
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Jeong CB, Kim BM, Kim RK, Park HG, Lee SJ, Shin KH, Leung KMY, Rhee JS, Lee JS. Functional characterization of P-glycoprotein in the intertidal copepod Tigriopus japonicus and its potential role in remediating metal pollution. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2014; 156:135-147. [PMID: 25198425 DOI: 10.1016/j.aquatox.2014.08.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 08/07/2014] [Accepted: 08/10/2014] [Indexed: 06/03/2023]
Abstract
The intertidal copepod Tigriopus japonicus has been widely used in aquatic toxicity testing for diverse environmental pollutants including metals. Despite relatively well-characterized in vivo physiological modulations in response to aquatic pollutants, the molecular mechanisms due to toxicity and detoxification are still unclear. To better understand the mechanisms of metal transport and further detoxification, T. japonicus P-glycoprotein (TJ-P-gp) with conserved motifs/domains was cloned and measured for protein activity against the transcript and protein expression profiles in response to metal exposure. Specifically, we characterized the preliminary efflux activity and membrane topology of TJ-P-gp protein that supports a transport function for chemicals. To uncover whether the efflux activity of TJ-P-gp protein would be modulated by metal treatment, copepods were exposed to three metals (Cd, Cu, and Zn), and were observed for both dose- and time-dependency on the efflux activity of TJ-P-gp protein with or without 10μM of P-gp-specific inhibitors verapamil and zosuquidar (LY335979) for 24h over a wide range of metal concentrations. In particular, treatment with zosuquidar induced metal accumulation in the inner body of T. japonicus. In addition, three metals significantly induced the transporting activity of TJ-P-gp in a concentration-dependent manner in both transcript and protein levels within 24h. Together these data indicate that T. japonicus has a conserved P-gp-mediated metal defense system through the induction of transcriptional up-regulation of TJ-P-gp gene and TJ-P-gp protein activity. This finding provides further understanding of the molecular defense mechanisms involved in P-glycoprotein-mediated metal detoxification in copepods.
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Affiliation(s)
- Chang-Bum Jeong
- Department of Chemistry, College of Natural Sciences, Hanyang University, Seoul 133-791, South Korea
| | - Bo-Mi Kim
- Department of Biological Sciences, College of Science, Sungkyunkwan University, Suwon 440-746, South Korea
| | - Rae-Kwon Kim
- Department of Chemistry, College of Natural Sciences, Hanyang University, Seoul 133-791, South Korea
| | - Heum Gi Park
- Department of Marine Resource Development, College of Life Sciences, Gangneung-Wonju National University, Gangneung 210-702, South Korea
| | - Su-Jae Lee
- Department of Chemistry, College of Natural Sciences, Hanyang University, Seoul 133-791, South Korea
| | - Kyung-Hoon Shin
- Department of Marine Sciences and Convergent Technology, College of Science and Technology, Hanyang University, Ansan 426-791, South Korea
| | - Kenneth Mei Yee Leung
- School of Biological Sciences and the Swire Institute of Marine Science, The University of Hong Kong, Poklam Road, Hong Kong, China
| | - Jae-Sung Rhee
- Department of Marine Science, College of Natural Sciences, Incheon National University, Incheon 406-772, South Korea.
| | - Jae-Seong Lee
- Department of Biological Sciences, College of Science, Sungkyunkwan University, Suwon 440-746, South Korea.
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13
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Gauthier PT, Norwood WP, Prepas EE, Pyle GG. Metal-PAH mixtures in the aquatic environment: a review of co-toxic mechanisms leading to more-than-additive outcomes. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2014; 154:253-69. [PMID: 24929353 DOI: 10.1016/j.aquatox.2014.05.026] [Citation(s) in RCA: 131] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 05/21/2014] [Accepted: 05/22/2014] [Indexed: 05/10/2023]
Abstract
Mixtures of metals and polycyclic aromatic hydrocarbons (PAHs) occur ubiquitously in aquatic environments, yet relatively little is known regarding their combined toxicities. Emerging reports investigating the additive mortality in metal-PAH mixtures have indicated that more-than-additive effects are equally as common as strictly-additive effects, raising concern for ecological risk assessment typically based on the summation of individual toxicities. Moreover, the current separation of focus between in vivo and in vitro studies, and fine- and coarse-scale endpoints, creates uncertainty regarding the mechanisms of co-toxicity involved in more-than-additive effects on whole organisms. Drawing from literature on metal and PAH toxicity in bacteria, protozoa, invertebrates, fish, and mammalian models, this review outlines several key mechanistic interactions likely to promote more-than-additive toxicity in metal-PAH mixtures. Namely, the deleterious effects of PAHs on membrane integrity and permeability to metals, the potential for metal-PAH complexation, the inhibitory nature of metals to the detoxification of PAHs via the cytochrome P450 pathway, the inhibitory nature of PAHs towards the detoxification of metals via metallothionein, and the potentiated production of reactive oxygenated species (ROS) in certain metal (e.g. Cu) and PAH (e.g., phenanthrenequinone) mixtures. Moreover, the mutual inhibition of detoxification suggests the possibility of positive feedback among these mechanisms. The individual toxicities and interactive aspects of contaminant transport, detoxification, and the production of ROS are herein discussed.
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Affiliation(s)
- Patrick T Gauthier
- Faculty of Natural Resources Management, Lakehead University, Thunder Bay, ON, Canada P7B 5E1.
| | - Warren P Norwood
- Aquatic Contaminants Research Division, Environment Canada, Burlington, ON, Canada L7R 4A6
| | - Ellie E Prepas
- Faculty of Natural Resources Management, Lakehead University, Thunder Bay, ON, Canada P7B 5E1
| | - Greg G Pyle
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB, Canada T1K 3M4
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14
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Williams TD, Davies IM, Wu H, Diab AM, Webster L, Viant MR, Chipman JK, Leaver MJ, George SG, Moffat CF, Robinson CD. Molecular responses of European flounder (Platichthys flesus) chronically exposed to contaminated estuarine sediments. CHEMOSPHERE 2014; 108:152-158. [PMID: 24534155 DOI: 10.1016/j.chemosphere.2014.01.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 01/13/2014] [Accepted: 01/25/2014] [Indexed: 06/03/2023]
Abstract
Molecular responses to acute toxicant exposure can be effective biomarkers, however responses to chronic exposure are less well characterised. The aim of this study was to determine chronic molecular responses to environmental mixtures in a controlled laboratory setting, free from the additional variability encountered with environmental sampling of wild organisms. Flounder fish were exposed in mesocosms for seven months to a contaminated estuarine sediment made by mixing material from the Forth (high organics) and Tyne (high metals and tributyltin) estuaries (FT) or a reference sediment from the Ythan estuary (Y). Chemical analyses demonstrated that FT sediment contained significantly higher concentrations of key environmental pollutants (including polycyclic aromatic hydrocarbons (PAHs), chlorinated biphenyls and heavy metals) than Y sediment, but that chronically exposed flounder showed a lack of differential accumulation of contaminants, including heavy metals. Biliary 1-hydroxypyrene concentration and erythrocyte DNA damage increased in FT-exposed fish. Transcriptomic and (1)H NMR metabolomic analyses of liver tissues detected small but statistically significant alterations between fish exposed to different sediments. These highlighted perturbance of immune response and apoptotic pathways, but there was a lack of response from traditional biomarker genes. Gene-chemical association annotation enrichment analyses suggested that polycyclic aromatic hydrocarbons were a major class of toxicants affecting the molecular responses of the exposed fish. This demonstrated that molecular responses of sentinel organisms can be detected after chronic mixed toxicant exposure and that these can be informative of key components of the mixture.
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Affiliation(s)
- Tim D Williams
- School of Biosciences, The University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
| | - Ian M Davies
- Marine Scotland Science, Marine Laboratory, 375 Victoria Rd., Aberdeen AB11 9DB, UK
| | - Huifeng Wu
- School of Biosciences, The University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Amer M Diab
- Institute of Aquaculture, The University of Stirling, Stirling FK9 4LA, UK
| | - Lynda Webster
- Marine Scotland Science, Marine Laboratory, 375 Victoria Rd., Aberdeen AB11 9DB, UK
| | - Mark R Viant
- School of Biosciences, The University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - J Kevin Chipman
- School of Biosciences, The University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Michael J Leaver
- Institute of Aquaculture, The University of Stirling, Stirling FK9 4LA, UK
| | - Stephen G George
- Institute of Aquaculture, The University of Stirling, Stirling FK9 4LA, UK
| | - Colin F Moffat
- Marine Scotland Science, Marine Laboratory, 375 Victoria Rd., Aberdeen AB11 9DB, UK
| | - Craig D Robinson
- Marine Scotland Science, Marine Laboratory, 375 Victoria Rd., Aberdeen AB11 9DB, UK
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15
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Zhao H, Cheng J, Cai J, Cheng Z, Cui Y, Gao G, Hu R, Gong X, Wang L, Hong F. Liver injury and its molecular mechanisms in mice caused by exposure to cerium chloride. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2012; 62:154-64. [PMID: 21503700 DOI: 10.1007/s00244-011-9672-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2010] [Accepted: 04/04/2011] [Indexed: 05/23/2023]
Abstract
Cerium has been demonstrated to damage liver of mice, but very little is known about the molecular mechanisms underlying the mouse liver apoptosis. In order to understand the liver injury induced by intragastric administration of cerium chloride (CeCl3) for 60 consecutive days, the hepatocyte ultrasrtucture, various oxidative stress parameters, and the stress-related gene expression levels were investigated for the mouse liver. The results demonstrated that CeCl3 had an obvious accumulation in the mouse liver, leading to a classical laddering cleavage of DNA and hepatocyte apoptosis. CeCl3 significantly promoted the accumulation of reactive oxygen species and inhibited the stress-related gene expression of superoxide dismutase, catalase, glutathione peroxidase, metallothionein, heat-shock protein 70, glutathione-S-transferase, P53, and transferring, and it effectively activated the cytochrome p450 1A. It implied that CeCl3 resulted in apoptosis and alteration of expression levels of the genes related with metal detoxification/metabolism regulation and radical scavenging action in mice.
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Affiliation(s)
- Haiquan Zhao
- Medical College of Soochow University, Suzhou, 215123, People's Republic of China
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16
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Ceyhun SB, Aksakal E, Ekinci D, Erdoğan O, Beydemir Ş. Influence of cobalt and zinc exposure on mRNA expression profiles of metallothionein and cytocrome P450 in rainbow trout. Biol Trace Elem Res 2011; 144:781-9. [PMID: 21547398 DOI: 10.1007/s12011-011-9068-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Accepted: 04/28/2011] [Indexed: 10/18/2022]
Abstract
The present research aims to evaluate the effects of cobalt and zinc exposure of rainbow trout (Oncorhynchus mykiss) on metallothioneins and cytocrome P450. Mature rainbow trouts were exposed to 10 mg/L CoCl(2).6H(2)O and 1 mg/L ZnSO(4).7H(2)O. After 6, 12, 24, and 48 h of treatment, expressions of muscle MT-A, MT-B, and CYP P4501A1 mRNAs were measured by means of quantitative real-time polymerase chain reaction. During the exposure experiments, no mortalities occurred. We observed that expression levels of all genes increased with exposure time. Since the organism has not learned how to completely dispose of heavy metals and tends to bioaccumulate them, our results indicate that cobalt and zinc exposure may result in accumulation of the non-eliminated metals which may lead to fish death.
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17
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Gui S, Zhang Z, Zheng L, Cui Y, Liu X, Li N, Sang X, Sun Q, Gao G, Cheng Z, Cheng J, Wang L, Tang M, Hong F. Molecular mechanism of kidney injury of mice caused by exposure to titanium dioxide nanoparticles. JOURNAL OF HAZARDOUS MATERIALS 2011; 195:365-370. [PMID: 21907489 DOI: 10.1016/j.jhazmat.2011.08.055] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Revised: 08/17/2011] [Accepted: 08/17/2011] [Indexed: 05/31/2023]
Abstract
Numerous studies have demonstrated that damage of kidney of mice can be caused by exposure to titanium dioxide nanoparticles (TiO(2) NPs). However, the molecular mechanism of TiO(2) NPs-induced nephric injury remains unclear. In this study, the mechanism of nephric injury in mice induced by an intragastric administration of TiO(2) NPs was investigated. The results showed that TiO(2) NPs were accumulated in the kidney, resulting in nephric inflammation, cell necrosis and dysfunction. Nucleic factor-κB was activated by TiO(2) NPs exposure, promoting the expression levels of tumor necrosis factor-α, macrophage migration inhibitory factor, interleukin-2, interleukin-4, interleukin-6, interleukin-8, interleukin-10, interleukin-18, interleukin-1β, cross-reaction protein, transforming growth factor-β, interferon-γ and CYP1A1, while heat shock protein 70 expression was inhibited. These findings implied that TiO(2) NPs-induced nephric injury of mice might be associated with alteration of inflammatory cytokine expression and reduction of detoxification of TiO(2) NPs.
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Affiliation(s)
- Suxing Gui
- Medical College, Soochow University, Suzhou 215123, People's Republic of China
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18
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Guinand B, Durieux EDH, Dupuy C, Cerqueira F, Bégout ML. Phenotypic and genetic differentiation in young-of-the-year common sole (Solea solea) at differentially contaminated nursery grounds. MARINE ENVIRONMENTAL RESEARCH 2011; 71:195-206. [PMID: 21315443 DOI: 10.1016/j.marenvres.2011.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2010] [Revised: 01/13/2011] [Accepted: 01/17/2011] [Indexed: 05/30/2023]
Abstract
Growth-related characters, condition factor, and genetic differentiation were investigated for a single cohort of young-of-the-year (YOY) sole within and among nurseries with differing levels of heavy metals (Cd, Cu and Zn) contamination in the two Charentais Straits, Bay of Biscay, France. Analyses were performed when individuals recruited (May), then after a full summer spent in each nursery (October). Levels of phenotypic and genetic diversity were compared, together with genetic differentiation at a candidate metallothionein (MT) locus and three putatively neutral microsatellite loci. No phenotypic or genetic differentiation was detected among nurseries in May, but significant variation at each phenotypic trait and at the multilocus level in October (P < 0.001). Single locus analysis demonstrated that only the MT locus was significantly differentiated among nurseries, whether corrected for null alleles or not (θ=0.0401 and θ(corr.FreeNA)=0.0326, respectively; P < 0.001). Results indicate that phenotypic differences among YOY sole nurseries present a molecular correlate acting at identical spatio-temporal scales among nurseries, potentially reflecting differential selective pressure among nurseries in response to contamination.
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Affiliation(s)
- Bruno Guinand
- Université Montpellier II, Institut des Sciences de l'Evolution de Montpellier, Evolution des Poissons, CNRS UMR 5554, place E. Bataillon, c.c. 63, 34095 Montpellier, Cedex 5, France.
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19
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Cui Y, Gong X, Duan Y, Li N, Hu R, Liu H, Hong M, Zhou M, Wang L, Wang H, Hong F. Hepatocyte apoptosis and its molecular mechanisms in mice caused by titanium dioxide nanoparticles. JOURNAL OF HAZARDOUS MATERIALS 2010; 183:874-80. [PMID: 20724067 DOI: 10.1016/j.jhazmat.2010.07.109] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2010] [Revised: 07/24/2010] [Accepted: 07/26/2010] [Indexed: 05/04/2023]
Abstract
While the hepatocyte apoptosis induced by TiO(2) nanoparticles (NPs) has been demonstrated, very little is known about the molecular mechanisms underlying this mouse liver apoptosis. In order to understand the hepatocyte apoptosis induced by intragastric administration of TiO(2) NPs for consecutive 60 days, the hepatocyte apoptosis, various oxidative stress parameters and the stress-related gene expression levels were assayed for the mouse liver. 60 days of TiO(2) NPs exposure, hepatocyte apoptosis in the liver could be observed, which was followed by increased reactive oxygen species accumulation, and decreased the stress-related gene expression levels of superoxide dismutase, catalase, glutathione peroxidase, metallothionein, heat shock protein 70, glutathione S transferase, P53, and transferrin; and the significant enhancement of the cytochrome p450 1A expression level. It implied that hepatocyte apoptosis, oxidative stresses, and alteration of expression levels of the genes related with TiO(2) NPs detoxification/metabolism regulation and radical scavenging action. Therefore, the application of TiO(2) NPs and exposure effects especially on human liver for long-term and low-dose treatment should be cautious.
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Affiliation(s)
- Yaling Cui
- Medical College of Soochow University, Renai Road No. 199, Suzhou 215123, People's Republic of China
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20
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Franco JL, Trevisan R, Posser T, Trivella DBB, Hoppe R, Martins Rosa J, Fernandes Dinslaken D, Decker H, Inês Tasca C, Bainy Leal R, Freire Marques MR, Dias Bainy AC, Luiz Dafre A. Biochemical alterations in caged Nile tilapia Oreochromis niloticus. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2010; 73:864-872. [PMID: 20346509 DOI: 10.1016/j.ecoenv.2010.03.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2009] [Revised: 02/27/2010] [Accepted: 03/03/2010] [Indexed: 05/29/2023]
Abstract
Joinville is an important industrial city in Santa Catarina, southern Brazil, and also a risk factor for the Babitonga drainage basin. Oxidative stress-related parameters were evaluated in caged tilapia (Oreochromis niloticus) exposed for 7 days (sites S1 and S2) in a Babitonga drainage basin tributary river. Site S1 showed enhanced levels of hepatic CYP1A, CYP2B-like and glutathione S-transferase activity, while site S2 showed decreased levels of glutathione and increased lipoperoxidation indexes, catalase, glutathione peroxidase and glutathione reductase activity. Correlation analyses revealed that oxidative stress-related parameters behaved like a group of interrelated variables, while CYPs and glutathione S-transferase seem to be independent. New putative biomarkers were evaluated in the tilapia brain. Caspase-3 activation (both sites), decreased in p38MAPK phosphorylation (site S2) and decreased expression in HSP70 (site S1) were observed. Data indicate that employed variables, when used as a group (oxidative stress-related parameters, CYP1A/2B-like, caspase-3, HSP70 and protein kinases) can be useful as predictors of pollution.
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Affiliation(s)
- Jeferson Luis Franco
- Departamento de Ciências Fisiológicas, Universidade Federal de Santa Catarina, 88040-900 Florianópolis, SC, Brazil
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21
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Christen V, Caminada D, Arand M, Fent K. Identification of a CYP3A form (CYP3A126) in fathead minnow (Pimephales promelas) and characterisation of putative CYP3A enzyme activity. Anal Bioanal Chem 2009; 396:585-95. [PMID: 19898817 DOI: 10.1007/s00216-009-3251-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2009] [Revised: 10/16/2009] [Accepted: 10/18/2009] [Indexed: 12/01/2022]
Abstract
Cytochrome P450-dependent monooxygenases (CYPs) are involved in the metabolic defence against xenobiotics. Human CYP3A enzymes metabolise about 50% of all pharmaceuticals in use today. Induction of CYPs and associated xenobiotic metabolism occurs also in fish and may serve as a useful tool for biomonitoring of environmental contamination. In this study we report on the cloning of a CYP3A family gene from fathead minnows (Pimephales promelas), which has been designated as CYP3A126 by the P450 nomenclature committee (GenBank no. EU332792). The cDNA was isolated, identified and characterised by extended inverse polymerase chain reaction (PCR), an alternative to the commonly used method of rapid amplification of cDNA ends. In a fathead minnow cell line we identified a full-length cDNA sequence (1,863 base pairs (bp)) consisting of a 1,536 bp open reading frame encoding a 512 amino acid protein. Genomic analysis of the identified CYP3A isoenzyme revealed a DNA sequence consisting of 13 exons and 12 introns. CYP3A126 is also expressed in fathead minnow liver as demonstrated by reverse transcription PCR. Exposure of fathead minnow (FHM) cells with the CYP3A inducer rifampicin leads to dose-dependent increase in putative CYP3A enzyme activity. In contrast, inhibitory effects of diazepam treatment were observed on putative CYP3A enzyme activity and additionally on CYP3A126 mRNA expression. This indicates that CYP3A is active in FHM cells and that CYP3A126 is at least in part responsible for this CYP3A activity. Further investigations will show whether CYP3A126 is involved in the metabolism of environmental chemicals.
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Affiliation(s)
- Verena Christen
- School of Life Sciences, University of Applied Sciences Northwestern Switzerland, Gründenstrasse 40, 4132 Muttenz, Switzerland
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22
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Chae YJ, Pham CH, Lee J, Bae E, Yi J, Gu MB. Evaluation of the toxic impact of silver nanoparticles on Japanese medaka (Oryzias latipes). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2009; 94:320-327. [PMID: 19699002 DOI: 10.1016/j.aquatox.2009.07.019] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2009] [Revised: 07/21/2009] [Accepted: 07/25/2009] [Indexed: 05/28/2023]
Abstract
The increased use of nano-sized metallic materials is likely to result in the release of these particles into the environment. It is, however, unclear if these materials are harmful to aquatic animals. Furthermore, because the dissolution of such nanomaterials will occur, it is probable that some of the adverse effects resulting will result from the dissolved metal species. In this study, therefore, we investigated the health and environmental impact of silver nanoparticles (Ag-NPs) on Japanese Medaka by studying changes in the expression of stress-related genes using real time RT-PCR analysis and compared these results with those of Medaka exposed to soluble silver ions. The stress-related genes selected here were metallothionein, HSP 70, GST, p53, CYP 1A and the transferrin gene. The expression levels of each gene were determined using two different Ag-NPs dosages and were quantified by measuring the mRNA concentrations in liver extracts with the Taqman-based Real-Time PCR method. The results suggest that these two silver forms have distinguishable toxic fingerprints between them. While the Ag-NPs led to cellular and DNA damage, as well as carcinogenic and oxidative stresses, genes related with metal detoxification/metabolism regulation and radical scavenging action were also induced. In contrast, the ionic silver led to an induction of inflammatory response and metallic detoxification processes in the liver of the exposed fish, but resulted in a lower overall stress response when compared with the Ag-NPs.
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Affiliation(s)
- Yun Ju Chae
- College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea
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23
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Anwar-Mohamed A, Elbekai RH, El-Kadi AOS. Regulation of CYP1A1 by heavy metals and consequences for drug metabolism. Expert Opin Drug Metab Toxicol 2009; 5:501-21. [DOI: 10.1517/17425250902918302] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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24
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Binelli A, Riva C, Provini A. Biomarkers in Zebra mussel for monitoring and quality assessment of Lake Maggiore (Italy). Biomarkers 2008; 12:349-68. [PMID: 17564842 DOI: 10.1080/13547500701197412] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Three different biomarkers (acetylcholinesterase (AChE), ethoxy resorufin-O-deethylase (EROD) and DNA strand breaks) were measured in Zebra mussel (Dreissena polymorpha) specimens collected in April 2005 at six different sampling sites on Lake Maggiore, the second largest Italian lake in terms of depth and volume, in order to assess the spatial variation of exposure to man-made contaminants. Mussels maintained at fixed laboratory conditions were used as controls to eliminate potential interference due to environmental factors. Biomarker data were also supported by the analysis of several chemicals (six dichlorodiphenyltrichloroethane (DDTs), 23 polychlorinated biphenyls (PCBs), 14 polybrominated diphenyl ethers (PBDEs), 11 polycyclic aromatic hydrocarbons (PAHs) and hexachlorobenzene (HCB)) measured in the mussel soft tissues by gas chromatographic analyses. We found a negative correlation between temperature and AChE activity, while any measured environmental or physiological factor seemed to influence EROD activity and DNA strand breaks. A positive relationship was found between EROD activity and all of the measured chemicals, except for PAHs, which correlated with the amount of DNA strand breaks. Significant differences were noted for all biomarkers, both among sampling stations and between control and experimental data, even if the general level of variability was low. The biomarkers showed a distinct pattern of spatial variation, but the evaluation of DNA strand breaks was the strongest discriminating power between sites. In addition, the comparison between AChE and EROD activity measured in 2005 was compared with results obtained in a previous study carried out over the same sampling period in 2003. Results indicated a strong influence of temperature on AChE activity and probable interference of substrate inhibition of EROD activity, pointing out the need to take care in the interpretation of data comparisons. The results obtained with two different metrics used for the measure of DNA strand breaks is also discussed, as well as the relationship between EROD activity data and potential genotoxicity.
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Affiliation(s)
- A Binelli
- Department of Biology, University of Milan, Milan, Italy.
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25
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Genotoxic damage in Solea senegalensis exposed to sediments from the Sado Estuary (Portugal): Effects of metallic and organic contaminants. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2008; 654:29-37. [DOI: 10.1016/j.mrgentox.2008.04.007] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2007] [Revised: 03/14/2008] [Accepted: 04/20/2008] [Indexed: 11/21/2022]
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26
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Williams TD, Diab AM, George SG, Godfrey RE, Sabine V, Conesa A, Minchin SD, Watts PC, Chipman JK. Development of the GENIPOL European flounder (Platichthys flesus) microarray and determination of temporal transcriptional responses to cadmium at low dose. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2006; 40:6479-88. [PMID: 17120584 DOI: 10.1021/es061142h] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We have constructed a high density, 13 270-clone cDNA array for the sentinel fish species European flounder (Platichthys flesus), combining clones from suppressive subtractive hybridization and a liver cDNA library; DNA sequences of 5211 clones were determined. Fish were treated by single intraperitoneal injection with 50 micrograms cadmium chloride per kilogram body weight, a dose relevant to environmental exposures, and hepatic gene expression changes were determined at 1, 2, 4, 8, and 16 days postinjection in comparison to saline-treated controls. Gene expression responses were confirmed by real-time reverse transcription polymerase chain reaction (RT-PCR). Blast2GO gene ontology analysis highlighted a general induction of the unfolded protein response, response to oxidative stress, protein synthesis, transport, and degradation pathways, while apoptosis, cell cycle, cytoskeleton, and cytokine genes were also affected. Transcript levels of cytochrome P450 1A (CYP1A) were repressed and vitellogenin altered, real-time PCR showed induction of metallothionein. We thus describe the establishment of a useful resource for ecotoxicogenomics and the determination of the temporal molecular responses to cadmium, a prototypical heavy metal pollutant.
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Affiliation(s)
- Tim D Williams
- School of Biosciences, The University of Birmingham, Edgbaston, Birmingham, B15 2TT UK.
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