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Xiang Y, Zhang X, Tian Z, Cheng Y, Liu N, Meng X. Molecular mechanisms of 1,2-dichloroethane-induced neurotoxicity. Toxicol Res 2023; 39:565-574. [PMID: 37779589 PMCID: PMC10541367 DOI: 10.1007/s43188-023-00197-x] [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: 01/16/2023] [Revised: 06/03/2023] [Accepted: 06/07/2023] [Indexed: 10/03/2023] Open
Abstract
The production of industrial solvents and adhesives often utilizes 1,2-dichloroethane (1,2-DCE), a highly toxic halogenated hydrocarbon compound. Occupational 1,2-DCE poisoning occurs frequently and is a public health concern. Exposure to 1,2-DCE can damage the brain, liver, and kidneys. The main and most severe damage caused by exposure to 1,2-DCE is to the nervous system, especially the central nervous system. Current research on 1,2-DCE mainly focuses on the mechanism of brain edema. Several possible mechanisms of 1,2-DCE neurotoxicity have been proposed, including oxidative stress, calcium overload, blood-brain barrier damage, and neurotransmitter changes. This article reviews the research progress on 1,2-DCE neurotoxicity and the mechanism behind it to provide a scientific basis for the prevention and treatment of 1,2-DCE poisoning.
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Affiliation(s)
- Yang Xiang
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, 1838 Guangzhoudadaobei, Guangzhou, Guangdong China
| | - Xiaoshun Zhang
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, 1838 Guangzhoudadaobei, Guangzhou, Guangdong China
| | - Zhiling Tian
- Shanghai Key Laboratory of Forensic Medicine, Ministry of Justice, Shanghai Forensic Service Platform, Key Laboratory of Forensic Science, Academy of Forensic Science, Shanghai, China
| | - Yibin Cheng
- Shanghai Key Laboratory of Forensic Medicine, Ministry of Justice, Shanghai Forensic Service Platform, Key Laboratory of Forensic Science, Academy of Forensic Science, Shanghai, China
| | - Ningguo Liu
- Shanghai Key Laboratory of Forensic Medicine, Ministry of Justice, Shanghai Forensic Service Platform, Key Laboratory of Forensic Science, Academy of Forensic Science, Shanghai, China
| | - Xiaojing Meng
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, 1838 Guangzhoudadaobei, Guangzhou, Guangdong China
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2
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Marcial-Hernandez R, Giacalone S, Neal WG, Lee CS, Gilhooly-Finn PA, Mastroianni G, Meli D, Wu R, Rivnay J, Palma M, Nielsen CB. Aqueous processing of organic semiconductors enabled by stable nanoparticles with built-in surfactants. NANOSCALE 2023; 15:6793-6801. [PMID: 36946985 DOI: 10.1039/d2nr06024h] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The introduction of oligoether side chains onto a polymer backbone can help to stabilise polymeric dispersions in water without the necessity of surfactants or additives when conjugated polymer nanoparticles are prepared. A series of poly(3-hexylthiophene) (P3HT) derivatives with different content of a polar thiophene derivative 3-((2-methoxyethoxy)methyl)thiophene was interrogated to find the effect of the polar chains on the stability of the formed nanoparticles, as well as their structural, optical, electrochemical, and electrical properties. Findings indicated that incorporation of 10-20 percent of the polar side chain led to particles that are stable over a period of 42 days, with constant particle size and polydispersity, however the particles from the polymer with 30 percent polar side chain showed aggregation effects. The polymer dispersions showed a stronger solid-like behaviour in water with decreasing polar side chain content, while thin film deposition from water was found to afford globular morphologies and crystallites with more isotropic orientation compared to conventional solution-processed films. As a proof-of-principle, field-effect transistors were fabricated directly from the aqueous dispersions demonstrating that polymers with hydrophilic moieties can be processed in water without the requirement of surfactants.
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Affiliation(s)
| | - Sofia Giacalone
- Department of Chemistry, Queen Mary University of London, Mile End Road, London E1 4NS, UK.
| | - William G Neal
- Department of Chemistry, Queen Mary University of London, Mile End Road, London E1 4NS, UK.
| | - Chang-Seuk Lee
- Department of Chemistry, Queen Mary University of London, Mile End Road, London E1 4NS, UK.
| | - Peter A Gilhooly-Finn
- Department of Chemistry, Queen Mary University of London, Mile End Road, London E1 4NS, UK.
| | - Giulia Mastroianni
- School of Biological and Behavioural Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Dilara Meli
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA
| | - Ruiheng Wu
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA
| | - Jonathan Rivnay
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
- Simpson Querrey Institute, Northwestern University, Chicago, Illinois 60611, USA
| | - Matteo Palma
- Department of Chemistry, Queen Mary University of London, Mile End Road, London E1 4NS, UK.
| | - Christian B Nielsen
- Department of Chemistry, Queen Mary University of London, Mile End Road, London E1 4NS, UK.
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3
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Podgórski R, Wojasiński M, Trepkowska-Mejer E, Ciach T. A simple and fast method for screening production of polymer-ceramic filaments for bone implant printing using commercial fused deposition modelling 3D printers. BIOMATERIALS ADVANCES 2023; 146:213317. [PMID: 36738523 DOI: 10.1016/j.bioadv.2023.213317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 01/08/2023] [Accepted: 01/25/2023] [Indexed: 01/30/2023]
Abstract
3D printing is a promising technique for obtaining bone implants. However, 3D printed bone implants, especially those printed using fused deposition modelling, are still in the experimental phase despite decades of work. Research on new materials faces numerous limitations, such as reagents' cost and machines' high prices to produce filaments for 3D printing polymer-ceramic composites for fused deposition modelling. This paper presents a simple, low-cost, and fast method of obtaining polymer-ceramic filaments using apparatus consisting of parts available in a hardware store. The method's versatility for producing the filaments was demonstrated on two different biodegradable polymers - polylactic acid and polycaprolactone - and different concentrations of calcium phosphate - β-tricalcium phosphate - in the composite, up to 50 % by weight. For screening purposes, numerous scaffolds were 3D printed from the obtained filaments on a commercial 3D printer. Structural, mechanical, and biological tests show that the 3D printed scaffolds are suitable for bone implants, as their structure, mechanical, and non-cytotoxic properties are evident. Moreover, the proposed method of composite forming is a simplification of the processes of manufacturing and researching 3D printed materials with potential applications in the regeneration of bone tissue.
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Affiliation(s)
- Rafał Podgórski
- Warsaw University of Technology, Faculty of Chemical and Process Engineering, Department of Biotechnology and Bioprocess Engineering, Laboratory of Biomedical Engineering, Waryńskiego 1, 00-645 Warsaw, Poland.
| | - Michał Wojasiński
- Warsaw University of Technology, Faculty of Chemical and Process Engineering, Department of Biotechnology and Bioprocess Engineering, Laboratory of Biomedical Engineering, Waryńskiego 1, 00-645 Warsaw, Poland
| | - Edyta Trepkowska-Mejer
- Warsaw University of Technology, Faculty of Chemical and Process Engineering, Department of Biotechnology and Bioprocess Engineering, Laboratory of Biomedical Engineering, Waryńskiego 1, 00-645 Warsaw, Poland
| | - Tomasz Ciach
- Warsaw University of Technology, Faculty of Chemical and Process Engineering, Department of Biotechnology and Bioprocess Engineering, Laboratory of Biomedical Engineering, Waryńskiego 1, 00-645 Warsaw, Poland; Centre for Advanced Materials and Technologies CEZAMAT, Poleczki 19, 02-822 Warsaw, Poland
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4
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Salama MM, El-Naggar DA, Abdel-Rahman RH, Elhak SAG. Toxic Effects of Trichloroethylene on Rat Neuroprogenitor Cells. Front Pharmacol 2018; 9:741. [PMID: 30042680 PMCID: PMC6048252 DOI: 10.3389/fphar.2018.00741] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 06/18/2018] [Indexed: 01/08/2023] Open
Abstract
Trichloroethylene (TCE) is a common volatile organic solvent which is considered as an ubiquitous environmental pollutant. It is claimed to be a developmental neurotoxicant. Our group evaluated previously its impact on three-dimensional neurospheres in vitro. The current work aims to investigate the neurotoxic effects of a lower concentration of TCE on the same system. To perform the experiment, neural progenitor cells were obtained from the brains of nine newborn rats. Afterward, these cells were cultured in both growth and differentiation media to get the neurospheres. Cell cultures were divided into two groups: group 1 (control), group 2 (exposed to 0.25 μM TCE). Neurospheres were photographed at different durations and assessment of the morphological changes such as proliferation and differentiation of neurospheres was done. In addition, cell viability, apoptosis, and necrosis were analyzed using flow cytometry to clarify the mechanism of involved cytotoxicity. The results revealed that TCE-treated neurospheres showed significantly decreased proliferation on days 7 and 14. These cells failed to show the neurogenic differentiation seen in the neurospheres of the control group. Furthermore, a highly significant decrease in viability and a significant increase in the number of apoptotic cells were observed in the treated cells in comparison to the control group. The present work confirmed that TCE, at very low doses relevant to daily life exposure in humans, caused neurotoxic effects in 3D neurosphere model through the affection of neural proliferation and differentiation as well as disturbance of cell viability and apoptosis.
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Affiliation(s)
- Mohamed M Salama
- Forensic Medicine and Clinical Toxicology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt.,Medical Experimental Research Centre, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Doaa A El-Naggar
- Forensic Medicine and Clinical Toxicology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Rania H Abdel-Rahman
- Forensic Medicine and Clinical Toxicology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Seham A G Elhak
- Forensic Medicine and Clinical Toxicology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
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5
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Quan Y, Wu H, Guo C, Han Y, Yin C. Enhancement of TCE removal by a static magnetic field in a fungal biotrickling filter. BIORESOURCE TECHNOLOGY 2018; 259:365-372. [PMID: 29574317 DOI: 10.1016/j.biortech.2018.03.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 03/01/2018] [Accepted: 03/05/2018] [Indexed: 06/08/2023]
Abstract
A fungal biotrickling filter (BTF) was employed to treat trichloroethylene (TCE) gas under different magnetic field intensities (MFIs). When the TCE inlet concentrations were approximately 370, 500-900, and 1000 mg/m3, the removal performances followed the order: MFI 20.0 mT > MFI 60.0 mT > MFI 80.0 mT > MFI 0 mT. In particular, at a TCE inlet concentration of 1000 mg/m3, MFI 20.0 mT was significantly better than MFI 0 mT performance. The corresponding removal efficiencies and maximum elimination capacities were 52.9%, 4854.1 mg/m3 h and 39.4%, 3594.8 mg/m3 h, respectively. BTF was shut down completely for 7 days and rapidly recovered in 6-10 days. High-throughput sequencing indicated that MF significantly affected the fungal community and significantly improved the relative abundance of the phylum Ascomycota, achieving the highest abundance of Ascomycota at MFI 20.0. These results indicated that a lower MFI can efficiently improve TCE removal performance in a fungal BTF.
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Affiliation(s)
- Yue Quan
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Department of Chemistry, Yanbian University, Yanji 133002, China; Department of Environmental Science, Agricultural College, Yanbian University, Yanji 133002, China
| | - Hao Wu
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Department of Chemistry, Yanbian University, Yanji 133002, China
| | - Chunyu Guo
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Department of Chemistry, Yanbian University, Yanji 133002, China
| | - Yu Han
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Department of Chemistry, Yanbian University, Yanji 133002, China; Department of Environmental Science, Agricultural College, Yanbian University, Yanji 133002, China
| | - Chengri Yin
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Department of Chemistry, Yanbian University, Yanji 133002, China; Analytical and Testing Center, Yanbian University, Yanji 133002, China.
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6
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Abdraboh ME, Abdeen SH, Salama M, El-Husseiny M, El-Sherbini YM, Eldeen NM. Developmental neurotoxic effects of a low dose of TCE on a 3-D neurosphere system. Biochem Cell Biol 2017; 96:50-56. [PMID: 29040813 DOI: 10.1139/bcb-2017-0089] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Trichloroethylene (TCE) is one of the industrial toxic byproducts that now persist in the air, soil, and water. Several studies have already illustrated the toxic effect of high doses of TCE on the biological functions of several organs. This study aims to highlight the toxic impact of a low dose of TCE (1 μmol/L) on the development of rat neural stem cells (NSCs). The subventricular zones (SVZ) of rat pup's brains were collected and minced, and the harvested cells were cultured in the presence of neural growth factors B27/N2 to develop neurospheres. The cells were then exposed to a dose of 1 μmol/L TCE for 1 or 2 weeks. The outcomes indicated a remarkable inhibitory effect of TCE on the differentiation capacity of NSCs, which was confirmed by down-regulation of the astrocyte marker GFAP The inhibitory effect of TCE on the proliferation of NSCs was identified by the reductions in neurosphere diameter, Ki67 expression, and cell cycle arrest at the G1/S phase. Immunolabelling with annexin V indicated the proapoptotic effect of TCE exposure. PCR results revealed a TCE-mediated suppression of the expression of the antioxidant enzyme SOD1. This paper illustrates, for the first time, a detailed examination of the toxic effects of an environmentally low dose of TCE on NCSs at the transcriptional, translational, and functional levels.
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Affiliation(s)
- M E Abdraboh
- a Department of Zoology, Faculty of Science, Mansoura University, Mansoura 35116, Egypt
| | - S H Abdeen
- a Department of Zoology, Faculty of Science, Mansoura University, Mansoura 35116, Egypt
| | - M Salama
- b Department of Toxicology, Faculty of Medicine, Mansoura University, Mansoura 35116, Egypt
| | - M El-Husseiny
- b Department of Toxicology, Faculty of Medicine, Mansoura University, Mansoura 35116, Egypt
| | - Y M El-Sherbini
- c Faculty of Health and Life Science, Oxford Brookes University, Headington Campus, Oxford, OX3 0BP, UK
| | - N M Eldeen
- a Department of Zoology, Faculty of Science, Mansoura University, Mansoura 35116, Egypt
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7
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Abolaji AO, Babalola OV, Adegoke AK, Farombi EO. Hesperidin, a citrus bioflavonoid, alleviates trichloroethylene-induced oxidative stress in Drosophila melanogaster. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2017; 55:202-207. [PMID: 28903082 DOI: 10.1016/j.etap.2017.08.038] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Revised: 08/18/2017] [Accepted: 08/24/2017] [Indexed: 06/07/2023]
Abstract
Trichloroethylene (TCE) is a chlorinated organic pollutant of groundwater with diverse toxic effects in animals and humans. Here, we investigated the ameliorative role of hesperidin, a citrus bioflavonoid on TCE-induced toxicity in Drosophila melanogaster. Four groups of D. melanogaster (50 flies/vial, with 5 vials/group) were exposed to ethanol (2.5%, control), HSP (400mg/10g diet), TCE (10μM/10g diet) and TCE (10μM/10g diet)+HSP (400mg/10g diet) respectively in the diet for 5days. Then, selected oxidative stress and antioxidant markers were evaluated. The results showed that TCE significantly increased the level of reactive oxygen species (ROS) and inhibited catalase, glutathione S-transferase and acetylcholinesterase (AChE) activities with concurrent depletion of total thiol level. However, co-administration of TCE and hesperidin mitigated TCE-induced depletion of antioxidants, and restored ROS level and AChE activity in the flies (p<0.05). Overall, hesperidin offered protective potency on TCE-induced oxidative stress in the flies via anti-oxidative mechanism.
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Affiliation(s)
- Amos Olalekan Abolaji
- Drug Metabolism and Molecular Toxicology Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria.
| | - Oluwatoyin Victoria Babalola
- Drug Metabolism and Molecular Toxicology Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Abimbola Kehinde Adegoke
- Drug Metabolism and Molecular Toxicology Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Ebenezer Olatunde Farombi
- Drug Metabolism and Molecular Toxicology Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria. /
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8
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Austel N, Schubert J, Gadau S, Jungnickel H, Budnik LT, Luch A. Influence of fumigants on sunflower seeds: Characteristics of fumigant desorption and changes in volatile profiles. JOURNAL OF HAZARDOUS MATERIALS 2017; 337:138-147. [PMID: 28514707 DOI: 10.1016/j.jhazmat.2017.04.070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 04/03/2017] [Accepted: 04/28/2017] [Indexed: 06/07/2023]
Abstract
Fumigation of transport containers is common practice to protect stored products from pests. Yet little is known about the desorption times and effects of the highly toxic gases used in this process. To shed light on the behavior of fumigants in real food, we treated sunflower seeds (Helianthus annuus L.) with 100ppm phosphine (PH3), methyl bromide (MeBr) or 1,2-dichloroethane (DCE) for 72h. The compound concentrations in the air were then analyzed by thermal desorption/2D gas chromatography coupled to mass spectrometry and flame photometric detection (TD-2D-GC-MS/FPD). A desorption time of several months was observed for DCE, whereas PH3 and MeBr were outgassed in a matter of days. To investigate possible interactions between gases and constituents of the seeds, non-fumigated, fumigated and outgassed samples were analyzed by headspace solid-phase microextraction GC-MS. We observed significantly different volatile profiles in fumigated and subsequently outgassed seeds compared to non-fumigated seeds. Whereas PH3-treated seeds released far more terpenoids, the volatile pattern of seeds exposed to DCE revealed significantly fewer terpenoids but more aldehydes. These changes are likely to affect food aroma characteristics.
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Affiliation(s)
- Nadine Austel
- German Federal Institute for Risk Assessment (BfR), Department of Chemical & Product Safety, Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany; Freie Universität Berlin, Institute of Biology, Applied Zoology/Animal Ecology, Haderslebener Str. 9, 12163 Berlin, Germany.
| | - Jens Schubert
- German Federal Institute for Risk Assessment (BfR), Department of Chemical & Product Safety, Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany
| | - Sabrina Gadau
- Institute for Occupational and Maritime Medicine (ZfAM), University Medical Center Hamburg-Eppendorf, Division of Occupational Toxicology and Immunology, Marckmannstraße 129b, 20539 Hamburg, Germany
| | - Harald Jungnickel
- German Federal Institute for Risk Assessment (BfR), Department of Chemical & Product Safety, Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany
| | - Lygia T Budnik
- Institute for Occupational and Maritime Medicine (ZfAM), University Medical Center Hamburg-Eppendorf, Division of Occupational Toxicology and Immunology, Marckmannstraße 129b, 20539 Hamburg, Germany
| | - Andreas Luch
- German Federal Institute for Risk Assessment (BfR), Department of Chemical & Product Safety, Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany
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Quan Y, Wu H, Yin Z, Fang Y, Yin C. Effect of static magnetic field on trichloroethylene removal in a biotrickling filter. BIORESOURCE TECHNOLOGY 2017; 239:7-16. [PMID: 28500890 DOI: 10.1016/j.biortech.2017.04.121] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 04/25/2017] [Accepted: 04/28/2017] [Indexed: 06/07/2023]
Abstract
A laboratory-scale biotrickling filter combined with a magnetic field (MF-BTF) and a single BTF (S-BTF) were set up to treat trichloroethylene (TCE) gas. The influences of phenol alone and NaAc-phenol as co-substrates and different MF intensities were investigated. At low MF intensity, MF-BTF displayed better performance with 0.20g/L of phenol, 53.6-337.1mg/m3 of TCE, and empty bed residence times of 202.5s. The performances followed the order MF-BTF (60.0mT)>MF-BTF (30.0mT)>S-BTF (0mT)>MF-BTF (130.0mT), and the removal efficiencies (REs) and maximum elimination capacities (ECs) corresponded to: 92.2%-45.5%, 2656.8mg/m3h; 89.8%-37.2%, 2169.1mg/m3h; 89.8%-29.8%, 1967.7mg/m3h; 76.0%-20.8%, 1697.1mg/m3h, respectively. High-throughput sequencing indicated that the bacterial diversity was lower, whereas the relative abundances of Acinetobacter, Chryseobacterium, and Acidovorax were higher in MF-BTF. Results confirmed that a proper MF could improve TCE removal performance in BTF.
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Affiliation(s)
- Yue Quan
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Yanbian University, Yanji 133002, China; Department of Environmental Science, Agricultural College, Yanbian University, Yanji 133002, China
| | - Hao Wu
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Yanbian University, Yanji 133002, China
| | - Zhenhao Yin
- Analytical and Testing Center, Yanbian University, Yanji 133002, China
| | - Yingyu Fang
- Analytical and Testing Center, Yanbian University, Yanji 133002, China
| | - Chengri Yin
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Yanbian University, Yanji 133002, China.
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Zhang Y, Tay J. Toxic and inhibitory effects of trichloroethylene aerobic co-metabolism on phenol-grown aerobic granules. JOURNAL OF HAZARDOUS MATERIALS 2015; 286:204-210. [PMID: 25577321 DOI: 10.1016/j.jhazmat.2015.01.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Revised: 12/10/2014] [Accepted: 01/01/2015] [Indexed: 06/04/2023]
Abstract
Aerobic granule, a form of microbial aggregate, exhibits good potential in degrading toxic and recalcitrant substances. In this study, the inhibitory and toxic effects of trichloroethylene (TCE), a model compound for aerobic co-metabolism, on phenol-grown aerobic granules were systematically studied, using respiratory activities after exposure to TCE as indicators. High TCE concentration did not exert positive or negative effects on the subsequent endogenous respiration rate or phenol dependent specific oxygen utilization rate (SOUR), indicating the absence of solvent stress and induction effect on phenol-hydroxylase. Phenol-grown aerobic granules exhibited a unique response to TCE transformation product toxicity, that small amount of TCE transformation enhanced the subsequent phenol SOUR. Granules that had transformed between 1.3 and 3.7 mg TCE gSS(-1) showed at most 53% increase in the subsequent phenol SOUR, and only when the transformation exceeded 6.6 mg TCE gSS(-1) did the SOUR dropped below that of the control. This enhancing effect was found to sustain throughout several phenol dosages, and TCE transformation below the toxicity threshold also lessened the granules' sensitivity to higher phenol concentration. The unique toxic effect was possibly caused by the granule's compact structure as a protection barrier against the diffusive transformation product(s) of TCE co-metabolism.
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Affiliation(s)
- Yi Zhang
- Department of Environmental Science and Engineering, Fudan University, 220 Handan Road, Yangpu District, Shanghai,200433, China.
| | - JooHwa Tay
- Department of Civil Engineering, University of Calgary, AB T2 N 1N4, Calgary, Canada
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11
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Li W, Chen L, Su Y, Yin H, Pang Y, Zhuang Z. 1,2-Dichloroethane induced nephrotoxicity through ROS mediated apoptosis in vitro and in vivo. Toxicol Res (Camb) 2015. [DOI: 10.1039/c5tx00056d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
1,2-Dichloroethane (DCE) decreased kidney cell proliferation, even induced cell apoptosisviaincreasing the generation of ROS in the presence of an extra-metabolic system.
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Affiliation(s)
- Wenxue Li
- Faculty of Toxicology
- Guangzhou key laboratory of Environmental Pollution and Health Risk Assessment
- School of Public Health
- Sun Yet-sen University
- Guangzhou
| | - Liping Chen
- Faculty of Toxicology
- Guangzhou key laboratory of Environmental Pollution and Health Risk Assessment
- School of Public Health
- Sun Yet-sen University
- Guangzhou
| | - Yiwei Su
- Faculty of Toxicology
- Guangzhou key laboratory of Environmental Pollution and Health Risk Assessment
- School of Public Health
- Sun Yet-sen University
- Guangzhou
| | - Hua Yin
- Faculty of Toxicology
- Guangzhou key laboratory of Environmental Pollution and Health Risk Assessment
- School of Public Health
- Sun Yet-sen University
- Guangzhou
| | - Yaqin Pang
- Faculty of Toxicology
- School of Public Health
- Youjiang Medical University for Nationalities
- Guangxi
- China
| | - Zhixiong Zhuang
- Faculty of Toxicology
- Guangzhou key laboratory of Environmental Pollution and Health Risk Assessment
- School of Public Health
- Sun Yet-sen University
- Guangzhou
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12
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Zhang X, Zhang X, Niu Z, Qi Y, Huang D, Zhang Y. 2,4,6-Trichlorophenol Cytotoxicity Involves Oxidative Stress, Endoplasmic Reticulum Stress, and Apoptosis. Int J Toxicol 2014; 33:532-41. [DOI: 10.1177/1091581814557701] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This study aims to evaluate the cytotoxicity and potential mechanisms of 2,4,6-trichlorophenol (2,4,6-TCP) in mouse embryonic fibroblasts. Our results show that 2,4,6-TCP causes morphological changes and reduces cell viability. The overproduction of reactive oxygen species, the upregulation of nuclear factor-E2-related factor 2 (Nrf2) and heme oxygenase 1 (HMOX1) messenger RNA (mRNA) expressions, and the nuclear translocation of Nrf2 protein demonstrate that 2,4,6-TCP induces oxidative stress, and the Nrf2/HMOX1 pathway might be involved in 2,4,6-TCP-induced antioxidative response. Simultaneously, our data also demonstrate that 2,4,6-TCP upregulates the expressions of binding immunoglobulin protein, inositol-requiring enzyme/endonuclease 1α, and C/EBP homologous protein; stimulates α subunit of eukaryotic translation initiation factor 2 phosphorylation; and induces the splicing of Xbp1 mRNA, suggesting that endoplasmic reticulum (ER) stress is triggered. Moreover, 2,4,6-TCP alters the mitochondrial membrane potential and increases the apoptosis rate, the caspase 3 activity, and the Bax/Bcl-2 ratio, demonstrating that the mitochondrial pathway is involved in the 2,4,6-TCP-induced apoptosis. Thus, these results show that 2,4,6-TCP induces oxidative stress, ER stress, and apoptosis, which together contribute to its cytotoxicity in vitro.
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Affiliation(s)
- Xiaoning Zhang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Xiaona Zhang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Zhidan Niu
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Yongmei Qi
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Dejun Huang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Yingmei Zhang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, China
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