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Rebechi D, Palacio-Cortés AM, Richardi VS, Beltrão T, Vicentini M, Grassi MT, da Silva SB, Alessandre T, Hasenbein S, Connon R, Navarro-Silva MA. Molecular and biochemical evaluation of effects of malathion, phenanthrene and cadmium on Chironomus sancticaroli (Diptera: Chironomidae) larvae. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 211:111953. [PMID: 33482495 DOI: 10.1016/j.ecoenv.2021.111953] [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: 09/03/2020] [Revised: 12/27/2020] [Accepted: 01/14/2021] [Indexed: 06/12/2023]
Abstract
In-vitro effects of sub-lethal concentrations of malathion, phenanthrene (Phe) and cadmium (Cd) were tested on Chironomus sancticaroli larvae in acute bioassays by measuring biochemical and molecular parameters. Malathion was evaluated at 0.001, 0.0564 and 0.1006 mg L-1; Phe at 0.0025, 1.25 and 2.44 mg L-1; and Cd at 0.001, 3.2 and 7.4 mg L-1. The recovery test carried out at the highest concentration of each compound showed that survival of larvae exposed to Phe ranged from 4% to 5%, while the effects of malathion and Cd were irreversible, not allowing the emergence of adults. Results showed that malathion and Cd inhibited AChE, EST-α and ES-β activities at the two highest concentrations. Phe at 0.0025, 1.25 and 2.44 mg L-1; and Cd at 3.2 and 7.4 mg L-1 inhibited glutathione S-transferase activity. Oxidative stress was exclusively induced by the lowest concentration of malathion considering SOD activity once CAT was unaffected by the stressors. Lipid peroxidation was registered exclusively by malathion at the two highest concentrations, and total hemoglobin content was only reduced by Cd at the two highest concentrations. The relationship among biochemical results, examined using the PCA, evidenced that malathion and Cd concentrations were clustered into two groups, while Phe only formed one group. Four hemoglobin genes of C. sancticaroli were tested for the first time in this species, with Hemoglobin-C being upregulated by malathion. The toxicity ranking was malathion > Phe > Cd, while biochemical and molecular results showed the order malathion > Cd > Phe. Our results highlight the importance of combining different markers to understand the effects of the diverse compounds in aquatic organisms.
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Affiliation(s)
- Débora Rebechi
- Department of Zoology, Federal University of Paraná, Curitiba, Paraná, Brazil
| | | | | | - Tiago Beltrão
- Department of Zoology, Federal University of Paraná, Curitiba, Paraná, Brazil
| | - Maiara Vicentini
- Department of Zoology, Federal University of Paraná, Curitiba, Paraná, Brazil
| | - Marco Tadeu Grassi
- Department of Chemistry, Federal University of Paraná, Curitiba, Paraná, Brazil
| | | | - Thiago Alessandre
- Department of Chemistry, Federal University of Paraná, Curitiba, Paraná, Brazil
| | - Simone Hasenbein
- Department of Anatomy, Physiology & Cell Biology, University of California, Davis, CA, USA
| | - Richard Connon
- Department of Anatomy, Physiology & Cell Biology, University of California, Davis, CA, USA
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Park K, Kwak IS. Multi-Level Gene Expression in Response to Environmental Stress in Aquatic Invertebrate Chironomids: Potential Applications in Water Quality Monitoring. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2021; 259:77-122. [PMID: 34661753 DOI: 10.1007/398_2021_79] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In freshwater ecosystems, aquatic invertebrates are influenced continuously by both physical stress and xenobiotics. Chironomids (Diptera; Chironomidae), or non-biting midges, are the most diverse and abundant invertebrates in freshwater habitats. They are a fundamental link in food chains of aquatic ecosystems. Chironomid larvae tolerate stress factors in their environments via various physiological processes. At the molecular level, environmental pollutants induce multi-level gene responses in Chironomus that regulate cellular protection through the activation of defense processes. This paper reviews literature on the transcriptional responses of biomarker genes to environmental stress in chironomids at the molecular level, in studies conducted from 1991 to 2020 (120 selected literatures of 374 results with the keywords "Chironomus and gene expression" by PubMed search tool). According to these studies, transcriptional responses in chironomids vary depending on the type of stress factor and defensive responses associated with antioxidant activity, the endocrine system, detoxification, homeostasis and stress response, energy metabolism, ribosomal machinery, apoptosis, DNA repair, and epigenetics. These data could provide a comprehensive overview of how Chironomus species respond to pollutants in aquatic environments. Furthermore, the transcriptomic data could facilitate the development of genetic tools for water quality and environmental monitoring based on resident chironomid species.
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Affiliation(s)
- Kiyun Park
- Fisheries Science Institute, Chonnam National University, Yeosu, South Korea
| | - Ihn-Sil Kwak
- Department of Ocean Integrated Science and Fisheries Science Institute, Chonnam National University, Yeosu, South Korea.
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Ballesteros ML, Boyle RL, Kellar CR, Miglioranza KSB, Bistoni MA, Pettigrove V, Long SM. What types of enzyme activities are useful biomarkers of bifenthrin exposure on Chironomus sp. (Diptera, Chironomidae) larvae under laboratory and field-based microcosm conditions? AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2020; 228:105618. [PMID: 32937231 DOI: 10.1016/j.aquatox.2020.105618] [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: 05/27/2020] [Revised: 08/24/2020] [Accepted: 08/30/2020] [Indexed: 06/11/2023]
Abstract
Bifenthrin is a second generation synthetic pyrethroid insecticide that is widely used in Australia and worldwide. It is frequently found in urban freshwater sediments at concentrations likely to impact biota as it is highly toxic to fish and macroinvertebrates, such as chironomids. Our main goal was to evaluate if oxidative stress and hydrolase enzymes are useful biomarkers of effect of synthetic pyrethroids exposure under different scenarios. Chironomus tepperi larvae (5 days old) were exposed to sub-lethal sediment concentrations of bifenthrin for 5 days under controlled laboratory conditions. A field-based microcosm exposure with bifenthrin-spiked sediments (using the same concentrations as the laboratory exposure) was carried out at a clean field site for four weeks to allow for colonization and development of resident chironomid larvae. At the end of both experiments, Chironomus larvae (C. tepperi in the laboratory exposures and C. oppositus in the microcosm exposures) were collected and oxidative stress enzymes (Glutathione-s-Transferase, Glutathione Reductase and Glutathione Peroxidase) and hydrolase enzymes (Acetylcholinesterase and Carboxylesterase) were measured. Only the Glutathione Peroxidase activity was significantly impacted in larvae from the laboratory exposure. On the contrary, significant changes were observed in all the measured enzymes from the field-based microcosm exposure. This is likely because exposure was throughout the whole life cycle, from egg mass to fourth instar, showing a more realistic exposure scenario. Furthermore, this is the first time that changes in oxidative stress and hydrolase enzymes have been shown to occur in Australian non-biting midges exposed under field-based microcosm conditions. Thus, this study demonstrated the usefulness of these enzymes as biomarkers of effect following bifenthrin exposure in microcosms. It also highlights the importance of using a range of different biochemical endpoints to get a more holistic understanding of pesticide effects and the pathways involved.
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Affiliation(s)
- Maria L Ballesteros
- Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales, Cátedra de Diversidad Animal II, Córdoba, Argentina; CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Instituto de Diversidad y Ecología Animal (IDEA), Argentina; Centre for Aquatic Pollution Identification and Management (CAPIM), School of BioSciences, The University of Melbourne, Parkville, 3010 Vic, Australia
| | - Rhianna L Boyle
- Centre for Aquatic Pollution Identification and Management (CAPIM), School of BioSciences, The University of Melbourne, Parkville, 3010 Vic, Australia
| | - Claudette R Kellar
- Centre for Aquatic Pollution Identification and Management (CAPIM), School of BioSciences, The University of Melbourne, Parkville, 3010 Vic, Australia; Aquatic Environmental Stress Research Group (AQUEST), School of Science, RMIT University, PO Box 71, Bundoora, 3083 Vic, Australia
| | - Karina S B Miglioranza
- Universidad Nacional de Mar del Plata, Facultad de Ciencias Exactas y Naturales, Mar del Plata, Argentina; CONICET, Laboratorio de Ecotoxicología y Contaminación Ambiental, Instituto de Investigaciones Marinas y Costeras (IIMyC), Argentina
| | - Maria A Bistoni
- Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales, Cátedra de Diversidad Animal II, Córdoba, Argentina; CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Instituto de Diversidad y Ecología Animal (IDEA), Argentina
| | - Vincent Pettigrove
- Centre for Aquatic Pollution Identification and Management (CAPIM), School of BioSciences, The University of Melbourne, Parkville, 3010 Vic, Australia; Aquatic Environmental Stress Research Group (AQUEST), School of Science, RMIT University, PO Box 71, Bundoora, 3083 Vic, Australia
| | - Sara M Long
- Centre for Aquatic Pollution Identification and Management (CAPIM), School of BioSciences, The University of Melbourne, Parkville, 3010 Vic, Australia; Aquatic Environmental Stress Research Group (AQUEST), School of Science, RMIT University, PO Box 71, Bundoora, 3083 Vic, Australia.
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Szczerkowska-Majchrzak E, Jarosiewicz M. A comparative study of the oxidative system in Chironomidae larvae with contrasting feeding strategies. THE EUROPEAN ZOOLOGICAL JOURNAL 2020. [DOI: 10.1080/24750263.2020.1810336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Affiliation(s)
- E. Szczerkowska-Majchrzak
- Faculty of Biology and Environmental Protection, Department of Ecology and Vertebrate Zoology, University of Lodz, Poland
| | - M. Jarosiewicz
- Faculty of Biology and Environmental Protection, Department of Biophysics of Environmental Pollution, University of Lodz, Poland
- Faculty of Biology and Environmental Protection, Department of Cytobiochemistry, University of Lodz, Poland
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Savić-Zdravković D, Milošević D, Uluer E, Duran H, Matić S, Stanić S, Vidmar J, Ščančar J, Dikic D, Jovanović B. A Multiparametric Approach to Cerium Oxide Nanoparticle Toxicity Assessment in Non-Biting Midges. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2020; 39:131-140. [PMID: 31581319 DOI: 10.1002/etc.4605] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 08/19/2019] [Accepted: 09/29/2019] [Indexed: 06/10/2023]
Abstract
Cerium oxide nanoparticles (CeO2 NPs) are included in the Organisation for Economic Co-operation and Development (OECD) priority list of engineered nanomaterials for assessment of their environmental impact. The present study was carried out to assess the CeO2 NP toxicity to the freshwater midge Chironomus riparius larvae at concentrations of 2.5, 25, 250, and 2500 mg of CeO2 NP/kg of sediment. Experiments were designed to assess the prolonged exposure of midges to CeO2 NPs while adhering to OECD test guideline 218. The following parameters were investigated: CeO2 NP uptake by larvae, oxidative stress parameters, in vivo genotoxic effects, and life trait parameters. Inductively coupled plasma-mass spectrometry analysis showed a significant positive correlation between the concentration of CeO2 NPs in the sediment and its uptake by the larvae. No significant mortality was observed in C. riparius, and oxidative stress was not detected. The only significantly induced sublethal effect was genotoxicity, which began to manifest at a lowest-observed-effect concentration of 25 mg kg-1 of sediment and progressively increased at higher concentrations. Our results indicate that exposure to CeO2 NP-contaminated freshwater sediments does not pose a risk to chironomids at environmentally realistic concentrations. However, the significant accumulation of CeO2 NPs by chironomid larvae may pose a risk through trophic transfer to organisms further up the food chain. Environ Toxicol Chem 2019;39:131-140. © 2019 SETAC.
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Affiliation(s)
| | - Djuradj Milošević
- Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Niš, Serbia
| | - Ezgi Uluer
- Department of Materials Science and Nanotechnology Engineering, TOBB University of Economics and Technology, Ankara, Turkey
| | - Hatice Duran
- Department of Materials Science and Nanotechnology Engineering, TOBB University of Economics and Technology, Ankara, Turkey
| | - Sanja Matić
- Department of Biology and Ecology, Faculty of Science, University of Kragujevac, Kragujevac, Serbia
- Department of Sciences, Institute for Information Technologies, University of Kragujevac, Kragujevac, Serbia
| | - Snežna Stanić
- Department of Biology and Ecology, Faculty of Science, University of Kragujevac, Kragujevac, Serbia
| | - Janja Vidmar
- Department of Environmental Sciences, Jozef Stefan Institute, Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Janez Ščančar
- Department of Environmental Sciences, Jozef Stefan Institute, Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Domagoj Dikic
- Faculty of Science, Department of Animal Physiology, Zagreb, Croatia
| | - Boris Jovanović
- Department of Natural Resource Ecology and Management, Iowa State University, Ames, Iowa, USA
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6
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Monteiro HR, Lemos MFL, Novais SC, Soares AMVM, Pestana JLT. Amitraz toxicity to the midge Chironomus riparius: Life-history and biochemical responses. CHEMOSPHERE 2019; 221:324-332. [PMID: 30641373 DOI: 10.1016/j.chemosphere.2019.01.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 12/28/2018] [Accepted: 01/02/2019] [Indexed: 05/21/2023]
Abstract
Acute and chronic toxicity of the formamidine pesticide amitraz to the midge Chironomus riparius was assessed using conventional ecotoxicological tests and biochemical approaches (biomarkers). Amitraz is mainly used as an ectoparasiticide in veterinary medicine, but also in agriculture and apiculture. However, information of amitraz toxicity to non-target invertebrates is limited. Besides the impairment of developmental and emergence rates (reduced larval growth, emergence, and delayed development time) caused by chronic exposure to amitraz, acute exposures induced alterations in the antioxidant enzymes glutathione peroxidase (GPx) and catalase (CAT), and in energetic metabolism biomarkers, lactate dehydrogenase (LDH) and electron transport system (ETS) activities. Moreover, lipid peroxidation (LPO) increased by amitraz exposure. Our results reveal potential secondary effects of amitraz to invertebrates and biomarkers that may aid in the interpretation of sub-lethal toxic responses to amitraz. These results add information concerning the potential outcomes of amitraz exposure to freshwater invertebrates underlining the importance of risk assessment studies of formamidine pesticides.
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Affiliation(s)
- Hugo R Monteiro
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal; MARE - Marine and Environmental Sciences Centre, ESTM, Instituto Politécnico de Leiria, 2520-641, Peniche, Portugal; Department of Biochemistry and Microbiology, Laboratory for Microbiology, Ghent University, B-9000, Gent, Belgium.
| | - Marco F L Lemos
- MARE - Marine and Environmental Sciences Centre, ESTM, Instituto Politécnico de Leiria, 2520-641, Peniche, Portugal
| | - Sara C Novais
- MARE - Marine and Environmental Sciences Centre, ESTM, Instituto Politécnico de Leiria, 2520-641, Peniche, Portugal
| | - Amadeu M V M Soares
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - João L T Pestana
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
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7
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Palacio-Cortés AM, Signorini-Souza IDL, Yoshio Hara EL, Disner RG, Rebechi D, Grassi MT, Cestari MM, Navarro-Silva MA. Polybrominated diphenyl ethers (PBDEs) effects on Chironomus sancticaroli larvae after short-term exposure. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 139:308-315. [PMID: 28167443 DOI: 10.1016/j.ecoenv.2017.01.052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/20/2016] [Accepted: 01/31/2017] [Indexed: 06/06/2023]
Abstract
In-vivo effects of polybrominated diphenyl ethers (PBDEs) containing 3, 4 and 5 bromine atoms were tested on fourth-instar larvae of Chironomus sancticaroli (Diptera: Chironomidae) after 48h of exposure, by measuring the activity of the acetyl cholinesterase, alpha and beta esterases and glutathione S-transferase. The PBDE congeners 2,2',4-triBDE (BDE-17), 2,2',4,4'-tetraBDE (BDE-47) and 2,2',4,4',5-pentaBDE (BDE-99) were evaluated at 0.5, 1.0, 2.0 and 3.0ngmL-1. Acetyl cholinesterase activity decreased significantly (p≤0.05) at all evaluated concentrations of the three PBDE congeners, except for larvae exposed to BDE-17 at 1.0 and 2.0ngmL-1. The significant inhibition of acetyl cholinesterase activity ranged from 18% (BDE-47 at 0.5ngmL-1) to 72% (BDE-47 at 2.0ngmL-1). The enzymes alpha and beta esterase were also affected by the three congeners, reducing their activity from 14% (BDE-99 at 1.0ngmL-1) to 52% (BDE-47 at 2.0ngmL-1) and from 7% (BDE-99 at 2.0ngmL-1) to 34% (BDE-47 at 3.0ngmL-1) respectively. Substantial increments in glutathione S-transferase activity were similarly observed, varying from 138% (BDE-99 2.0 at ng mL-1) to 346% (BDE-17 at 1.0ngmL-1). DNA strand breaks were detected exclusively in larvae exposed to BDE-99 at 2.0 and 3.0ngmL-1 (H=11.7, p=0.019). These results showed that C. sancticaroli larvae were sensitive to the PBDEs treatments under the experimental conditions.
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Affiliation(s)
| | | | | | | | - Debora Rebechi
- Zoology Department, Federal University of Paraná, Brazil
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8
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Herrero Ó, Morcillo G, Planelló R. Transcriptional deregulation of genetic biomarkers in Chironomus riparius larvae exposed to ecologically relevant concentrations of di(2-ethylhexyl) phthalate (DEHP). PLoS One 2017; 12:e0171719. [PMID: 28166271 PMCID: PMC5293269 DOI: 10.1371/journal.pone.0171719] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 01/24/2017] [Indexed: 11/19/2022] Open
Abstract
Di(2-ethylhexyl) phthalate (DEHP) is a ubiquitous environmental pollutant used worldwide as a plasticizer and solvent in many formulations. Based on available toxicological data, it has been classified as toxic for reproduction and as an endocrine disruptor. Despite this, ecotoxicological studies in aquatic wildlife organisms are still scarce. In the present work, the toxic molecular alterations caused by DEHP in aquatic larvae of the midge Chironomus riparius have been studied, by analyzing the transcriptional activity of genes related to some vital cellular pathways, such as the ribosomal machinery (rpL4, rpL13), the cell stress response (hsc70, hsp70, hsp40, hsp27), the ecdysone hormone pathway (EcR), the energy metabolism (GAPDH), and detoxication processes (CYP4G). Environmentally relevant concentrations (10-3 to 105 μg/L) and exposure conditions (24 to 96 h) have been tested, as well as the toxic effects after DEHP withdrawal. Although the compound caused no mortality, significant changes were detected in almost all the studied biomarkers: e.g. strong repression of hsp70; general inhibition of EcR; GAPDH activity loss in long exposures; among others. Our data show a general transcriptional downregulation that could be associated with an adaptive response to cell damage. Besides, the activity of the compound as an ecdysone antagonist and its delayed effects over almost all the biomarkers analyzed are described as novel toxic targets in insects.
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Affiliation(s)
- Óscar Herrero
- Grupo de Biología y Toxicología Ambiental, Facultad de Ciencias, Universidad Nacional de Educación a Distancia, UNED, Paseo de la Senda del Rey 9, Madrid, Spain
| | - Gloria Morcillo
- Grupo de Biología y Toxicología Ambiental, Facultad de Ciencias, Universidad Nacional de Educación a Distancia, UNED, Paseo de la Senda del Rey 9, Madrid, Spain
| | - Rosario Planelló
- Grupo de Biología y Toxicología Ambiental, Facultad de Ciencias, Universidad Nacional de Educación a Distancia, UNED, Paseo de la Senda del Rey 9, Madrid, Spain
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Nguyen Van M, Li W, Sheng P, Pham Van H, Cai Q. Photoelectrochemical label-free immunoassay of octachlorostyrene based on heterogeneous CdSe/CdS/Pt/TiO2 nanotube array. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2014.10.033] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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10
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Fluorescence immunoassay of octachlorostyrene based on Fo¨rster resonance energy transfer between CdTe quantum dots and rhodamine B. Biosens Bioelectron 2014; 60:52-6. [DOI: 10.1016/j.bios.2014.03.056] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 03/07/2014] [Accepted: 03/26/2014] [Indexed: 11/24/2022]
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11
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Jeppe KJ, Carew ME, Long SM, Lee SF, Pettigrove V, Hoffmann AA. Genes involved in cysteine metabolism of Chironomus tepperi are regulated differently by copper and by cadmium. Comp Biochem Physiol C Toxicol Pharmacol 2014; 162:1-6. [PMID: 24603357 DOI: 10.1016/j.cbpc.2014.02.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 02/19/2014] [Accepted: 02/20/2014] [Indexed: 10/25/2022]
Abstract
Freshwater invertebrates are often exposed to metal contamination, and changes in gene expression patterns can help understand mechanisms underlying toxicity and act as pollutant-specific biomarkers. In this study the expressions of genes involved in cysteine metabolism are characterized in the midge Chironomus tepperi during exposures to sublethal concentrations of cadmium and copper. These metals altered gene expression of the cysteine metabolism differently. Both metals decreased S-adenosylhomocysteine hydrolase expression and did not change the expression of S-adenosylmethionine synthetase. Cadmium exposure likely increased cystathionine production by up-regulating cystathionine-β-synthase (CβS) expression, while maintaining control level cysteine production via cystathionine-γ-lyase (CγL) expression. Conversely, copper down-regulated CβS expression and up-regulated CγL expression, which in turn could diminish cystathionine to favor cysteine production. Both metals up-regulated glutathione related expression (γ-glutamylcysteine synthase and glutathione synthetase). Only cadmium up-regulated metallothionein expression and glutathione S-transferase d1 expression was up-regulated only by copper exposure. These different transcription responses of genes involved in cysteine metabolism in C. tepperi point to metal-specific detoxification pathways and suggest that the transsulfuration pathway could provide biomarkers for identifying specific metals.
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Affiliation(s)
- Katherine J Jeppe
- Centre for Aquatic Pollution Identification and Management (CAPIM), Department of Zoology, The University of Melbourne, Royal Pde, Parkville 3010, Australia.
| | - Melissa E Carew
- Department of Zoology, The University of Melbourne, Bio21 Molecular Science and Biotechnology Institute, 30 Flemington Rd, Parkville 3010, Australia
| | - Sara M Long
- Centre for Aquatic Pollution Identification and Management (CAPIM), Department of Zoology, The University of Melbourne, Royal Pde, Parkville 3010, Australia
| | - Siu F Lee
- Department of Genetics, The University of Melbourne, Bio21 Molecular Science and Biotechnology Institute, 30 Flemington Rd, Parkville 3010, Australia
| | - Vincent Pettigrove
- Centre for Aquatic Pollution Identification and Management (CAPIM), Department of Zoology, The University of Melbourne, Royal Pde, Parkville 3010, Australia
| | - Ary A Hoffmann
- Centre for Aquatic Pollution Identification and Management (CAPIM), Department of Zoology, The University of Melbourne, Royal Pde, Parkville 3010, Australia; Department of Zoology, The University of Melbourne, Bio21 Molecular Science and Biotechnology Institute, 30 Flemington Rd, Parkville 3010, Australia; Department of Genetics, The University of Melbourne, Bio21 Molecular Science and Biotechnology Institute, 30 Flemington Rd, Parkville 3010, Australia
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Cai J, Sheng P, Zhou L, Shi L, Wang N, Cai Q. Label-free photoelectrochemical immunosensor based on CdTe/CdS co-sensitized TiO2 nanotube array structure for octachlorostyrene detection. Biosens Bioelectron 2013; 50:66-71. [DOI: 10.1016/j.bios.2013.05.040] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2013] [Revised: 05/14/2013] [Accepted: 05/24/2013] [Indexed: 10/26/2022]
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13
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Chen L, Li J, ThanhThuy TT, Zhou L, Huang C, Yuan L, Cai Q. A wireless and sensitive detection of octachlorostyrene using modified AuNPs as signal-amplifying tags. Biosens Bioelectron 2013; 52:427-32. [PMID: 24135481 DOI: 10.1016/j.bios.2013.08.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Revised: 08/15/2013] [Accepted: 08/16/2013] [Indexed: 11/15/2022]
Abstract
A wireless, remote query octachlorostyrene (OCS) biosensor was fabricated by coating a mass-sensitive magnetoelastic ribbon with anti-OCS antibody. In response to a time-varying magnetic field, the magnetoelastic sensor mechanically vibrates at a characteristic resonance frequency which inversely depends on the sensor mass loading. As the magnetoelastic film is magnetostrictive itself, the vibrations launch magnetic flux that can be remotely detected using a pickup coil. Au nanoparticles (NPs) were used to amplify the mass loading. In a sample solution containing OCS target and OCS-modified AuNPs (OCS-AuNPs), both OCS and OCS-AuNPs react with the anti-OCS antibody immobilized on the sensor surface in a competition mode. The bound OCS-AuNPs amount is inversely proportional to the OCS target concentration. The reduction of bound OCS-AuNPs induced by free OCS results in significant change in mass loading, which amplifies the responses. The biosensor demonstrates a linear shift in resonance frequency with OCS concentration between 7.4 μM and 9 nM, with a detection limit of 2.8 nM.
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Affiliation(s)
- Lan Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Department of Chemistry, Hunan University, Changsha 410082, People's Republic of China; Changsha Municipal Drainage Co.,Ltd., Changsha 410003, People's Republic of China
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