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Cenov A, Linšak DT, Perić L, Žurga P, Lušić DV, Traven L, Linšak Ž, Pupavac SM, Hamer B, Pelikan J, Glad M. Acetylcholinesterase activity in muscle tissue of Norway lobster Nephrops norvegicus: Importance of body size, season, sex and naturally occurring metals. MARINE POLLUTION BULLETIN 2024; 200:116067. [PMID: 38320443 DOI: 10.1016/j.marpolbul.2024.116067] [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: 11/30/2023] [Revised: 01/18/2024] [Accepted: 01/19/2024] [Indexed: 02/08/2024]
Abstract
The aim of the present study was to determine the levels of acetylcholinesterase (AChE) activity in the tail muscle tissue of wild populations of Nephrops norvegicus from the Northern Adriatic, and correlate it to body size, seasons, sex and the content of mercury, arsenic, cadmium, lead and copper. The animals of both sexes were collected in spring and autumn from two relatively distant fishing grounds. A marked variability of muscle AChE activity was found (0.49 to 11.22 nmol/min/mg prot.), displaying the opposite seasonal trend between two sampling sites. Small, but significant negative correlation has been found between AChE activity and carapace length (rs = - 0.35, p < 0.05). Data reported here provide an essential baseline for future studies of neurotoxicity in crustaceans. The study highlights the necessity for continuous monitoring of potentially toxic metals in edible marine species to avoid possible repercussions of seafood consumption on human health.
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Affiliation(s)
- Arijana Cenov
- Teaching Institute of Public Health of Primorje-Gorski Kotar County, Krešimirova 52a, 51000 Rijeka, Croatia; Department of Environmental Health, University of Rijeka, Faculty of Medicine, Braće Branchetta 20, 51000 Rijeka, Croatia
| | - Dijana Tomić Linšak
- Teaching Institute of Public Health of Primorje-Gorski Kotar County, Krešimirova 52a, 51000 Rijeka, Croatia; Department of Environmental Health, University of Rijeka, Faculty of Medicine, Braće Branchetta 20, 51000 Rijeka, Croatia.
| | - Lorena Perić
- Division for Marine and Environmental Research, Ruđer Bošković, Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
| | - Paula Žurga
- Teaching Institute of Public Health of Primorje-Gorski Kotar County, Krešimirova 52a, 51000 Rijeka, Croatia; Department for Medical Chemistry, Biochemistry and Clinical Chemistry, University of Rijeka, Faculty of Medicine, Braće Branchetta 20, 51000 Rijeka, Croatia
| | - Darija Vukić Lušić
- Teaching Institute of Public Health of Primorje-Gorski Kotar County, Krešimirova 52a, 51000 Rijeka, Croatia; Department of Environmental Health, University of Rijeka, Faculty of Medicine, Braće Branchetta 20, 51000 Rijeka, Croatia
| | - Luka Traven
- Teaching Institute of Public Health of Primorje-Gorski Kotar County, Krešimirova 52a, 51000 Rijeka, Croatia; Department of Environmental Health, University of Rijeka, Faculty of Medicine, Braće Branchetta 20, 51000 Rijeka, Croatia
| | - Željko Linšak
- Teaching Institute of Public Health of Primorje-Gorski Kotar County, Krešimirova 52a, 51000 Rijeka, Croatia; Department of Environmental Health, University of Rijeka, Faculty of Medicine, Braće Branchetta 20, 51000 Rijeka, Croatia
| | - Sandra Marinac Pupavac
- Teaching Institute of Public Health of Primorje-Gorski Kotar County, Krešimirova 52a, 51000 Rijeka, Croatia
| | - Bojan Hamer
- Center for Marine Research, Ruđer Bošković Institute, G. Paliaga 5, 52210, Rovinj, Croatia
| | - Jadranka Pelikan
- Teaching Institute of Public Health of Primorje-Gorski Kotar County, Krešimirova 52a, 51000 Rijeka, Croatia; Center for Marine Research, Ruđer Bošković Institute, G. Paliaga 5, 52210, Rovinj, Croatia
| | - Marin Glad
- Teaching Institute of Public Health of Primorje-Gorski Kotar County, Krešimirova 52a, 51000 Rijeka, Croatia; Department of Environmental Health, University of Rijeka, Faculty of Medicine, Braće Branchetta 20, 51000 Rijeka, Croatia
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2
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Crowther C, Turner A, Moore MN, Jha AN. Assessing the effects of single and binary exposures of copper and lead on Mytilus galloprovincialis: Physiological and genotoxic approaches. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2023; 265:106741. [PMID: 37944325 DOI: 10.1016/j.aquatox.2023.106741] [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: 07/24/2023] [Revised: 10/02/2023] [Accepted: 10/28/2023] [Indexed: 11/12/2023]
Abstract
It is becoming increasingly recognised that contaminants are not isolated in their threats to the aquatic environment, with recent shifts towards studying the effects of chemical mixtures. In this study, adult marine mussels (Mytilus galloprovincialis) were exposed to two aqueous concentrations of the essential trace metal, Cu (5 and 32 μg L-1), and the non-essential metal, Pb (5 and 25 μg L-1), both individually and in binary mixtures. After a 14-day exposure, metal accumulation was determined in the digestive gland, gill and mantle tissues by inductively coupled plasma-mass spectrometry following acid digestion, and a number of biochemical, neurotoxic and physiological markers were assessed. These included measurements of DNA damage using comet assay, total glutathione concentration, acetylcholinesterase (AChE) activity and clearance rate. Metal accumulation was greater in the digestive gland and gill than in the mantle, and based on computed free ion concentrations, was greater for Pb than for Cu. Copper exhibited an inhibitory effect on Pb accumulation but Pb did not appear to affect Cu accumulation. Comet assay results revealed DNA damage (i.e., genotoxic effects) in all treatments but differences between the exposures were not significant (p > 0.05), and there were no significant differences in AChE activities between treatments. The most distinctive impacts were a reduction in clearance rate resulting from the higher concentration of Cu, with and without Pb, and an increase in glutathione in the gill resulting from the higher concentration of Cu without Pb. Multivariate analysis facilitated the development of a conceptual model based on the current findings and previously published data on the toxicity and intracellular behaviour of Cu and Pb that will assist in the advancement of regulations and guidelines regarding multiple metal contaminants in the environment.
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Affiliation(s)
- Charlotte Crowther
- School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK
| | - Andrew Turner
- School of Geography, Earth and Environmental Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK.
| | - Michael N Moore
- School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK; Plymouth Marine Laboratory, Prospect Place, Plymouth PL1 3DH, UK; European Centre for Environment and Human Health (ECEHH), Knowledge Spa, Royal Cornwall Hospital, University of Exeter Medical School, Truro, Cornwall TR1 3HD, UK
| | - Awadhesh N Jha
- School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK
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Xu Y, Gui Y, Zhi D, Pi J, Liu X, Xiang J, Li D, Li J. Protective effects of calcium against cadmium-induced toxicity in juvenile grass carp (Ctenopharyngodon idellus). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 258:114972. [PMID: 37141681 DOI: 10.1016/j.ecoenv.2023.114972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/22/2023] [Accepted: 04/29/2023] [Indexed: 05/06/2023]
Abstract
Cadmium (Cd) is one of the dominant metal pollutants present in the aquatic environment that affects ion homeostasis, oxidative stress (OS) and immune responses of aquatic organisms. Given the physicochemical similarities between Cd2+ and calcium (Ca2+) ions, their antagonism may facilitate the mitigation of Cd-induced toxicity. To better understand the role of Ca in protecting against Cd-induced toxicity in teleosts, juvenile grass carp were exposed to Cd (measured concentration 3 μg/L) and a gradient of Ca concentrations (measured concentration 1.5 mg/L, 2.5 mg/L, 3.0 mg/L, and 3.5 mg/L in the control (CTL) group, low calcium (LCA) group, medium calcium (MCA) group, and high calcium (HCA) group, respectively) for 30 days. Inductively coupled plasma mass spectrometry (ICP-MS) data analyses showed that simultaneous exposure to Ca impaired the accumulation of Cd in all tested tissues. Besides, Ca addition maintained the plasma ion (Na+, K+, Cl-) homeostasis, alleviated Cd-induced oxidative stress (OS), and regulated the activities and transcriptional levels of ATPase. Furthermore, transcriptional heatmap analysis demonstrated that several indicator genes for OS and calcium signaling pathway were found to be significantly modulated by Ca addition. This work delineates a protective effect of Ca against Cd-induced toxicity in grass carp, providing new insight into the possible solutions to Cd pollution issues in aquaculture industry.
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Affiliation(s)
- Yang Xu
- College of Fisheries, Hunan Agricultural University, Changsha 410128, China
| | - Yuting Gui
- College of Fisheries, Hunan Agricultural University, Changsha 410128, China; Hunan Applied Technology University, Changde 415100, China
| | - Dan Zhi
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Jie Pi
- College of Fisheries, Hunan Agricultural University, Changsha 410128, China; Hunan Applied Technology University, Changde 415100, China
| | - Xinhua Liu
- College of Fisheries, Hunan Agricultural University, Changsha 410128, China
| | - Jianguo Xiang
- College of Fisheries, Hunan Agricultural University, Changsha 410128, China
| | - Deliang Li
- College of Fisheries, Hunan Agricultural University, Changsha 410128, China.
| | - Junhua Li
- College of Fisheries, Hunan Agricultural University, Changsha 410128, China.
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Varea R, Piovano S, Ferreira M. Knowledge gaps in ecotoxicology studies of marine environments in Pacific Island Countries and Territories - A systematic review. MARINE POLLUTION BULLETIN 2020; 156:111264. [PMID: 32510405 DOI: 10.1016/j.marpolbul.2020.111264] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 05/06/2020] [Accepted: 05/09/2020] [Indexed: 06/11/2023]
Abstract
The Pacific Island Countries and Territories (PICTs) are heavily dependent on the marine resources for food security, employment, government revenue and economic development, hence the concern about the potential exposure of these resources to pollutants. The main goal of this review was to identify ecotoxicology studies published that were done in PICTs. Four major gaps were identified: i) a quantitative gap, with low number of studies published on the PICTs; ii) a geographic gap, where ecotoxicology studies have unevenly covered the different PICTs; iii) a temporal gap, as no biological effect monitoring study has so far been published for the PICTs; and, iv) a pollutants gap, as all of the PICTs studies focused mainly on environmental monitoring studying on average two types of pollutants (heavy metals and pesticides) per PICT only. We suggest, therefore, the potential risk to the marine environment to be estimated by assessing the fate of pollutants via chemical and biological effect monitoring.
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Affiliation(s)
- Rufino Varea
- School of Marine Studies, Faculty of Science Technology and Environment, The University of the South Pacific, Laucala Bay Road, Suva, Fiji
| | - Susanna Piovano
- School of Marine Studies, Faculty of Science Technology and Environment, The University of the South Pacific, Laucala Bay Road, Suva, Fiji
| | - Marta Ferreira
- School of Marine Studies, Faculty of Science Technology and Environment, The University of the South Pacific, Laucala Bay Road, Suva, Fiji; CIIMAR/CIMAR-Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
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5
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Xu XY, Wong CY, Tam NFY, Liu HM, Cheung SG. Barnacles as potential bioindicator of microplastic pollution in Hong Kong. MARINE POLLUTION BULLETIN 2020; 154:111081. [PMID: 32319909 DOI: 10.1016/j.marpolbul.2020.111081] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 03/15/2020] [Accepted: 03/16/2020] [Indexed: 06/11/2023]
Abstract
Microplastic (MP) pollution is an emerging problem in the marine environment and the assessment of the presence and abundance of microplastics in wild organisms is essential for risk assessment. The occurrence of microplastics in four species of barnacles at 30 sites in Hong Kong waters was investigated. The median number of microplastics ranged between 0 and 8.63 particles g-1 wet weight, or 0 and 1.9 particles individual-1, with fibers being the most abundant type of microplastics. The chemical composition of 152 pieces out of 606 potential microplastics was analyzed using micro-Fourier Transform Infrared Spectroscopy (μ-FTIR). Fifty-two of them were synthetic polymers, 95 natural cotton fibers and five unknowns. Eight types of polymer were identified with cellophane being the most abundant (58%). Correlation analysis was conducted between the abundance of MPs in sediments obtained in our previous study and that in individual barnacle species in this study, and a positive correlation was established for the barnacle Amphibalanus amphitrite, highlighting the potential of using this species as a bioindicator of microplastics.
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Affiliation(s)
- X-Y Xu
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - C Y Wong
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - N F Y Tam
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - H M Liu
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - S G Cheung
- Department of Chemistry, City University of Hong Kong, Hong Kong, China; State Key Laboratory of Marine Pollution, City University of Hong Kong, Hong Kong, China.
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Tsui MMP, Chen L, He T, Wang Q, Hu C, Lam JCW, Lam PKS. Organic ultraviolet (UV) filters in the South China sea coastal region: Environmental occurrence, toxicological effects and risk assessment. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 181:26-33. [PMID: 31154117 DOI: 10.1016/j.ecoenv.2019.05.075] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 05/21/2019] [Accepted: 05/25/2019] [Indexed: 06/09/2023]
Abstract
Organic ultraviolet (UV) filters are common ingredients of personal care products and occur ubiquitously in the aquatic environment; however, little is known about their distribution in and potential effects to the marine environment. This study reports the occurrence, toxicological effects and risk assessment of eleven commonly consumed UV filters in marine surface water collected from the South China Sea (SCS) coastal region. The concentrations of UV filters ranged from <MDL to 145 ng/L in the SCS, in which benzophenone-3, octocrylene and butyl methoxydibenzoylmethane were the most dominant compounds with their detection frequencies over 97%. Relatively higher levels of total UV filters were found near the highly industrialized and urbanized Pearl River Estuary (PRE) and the concentrations gradually decreased towards the SCS. In general, the environmental levels of UV filters were higher at the western marine waters in Hong Kong than the eastern marine waters. Significant negative correlations were observed between benzophenone-4 and water temperature, as well as ethylhexyl methoxycinnamate and salinity (P < 0.001; r < -0.5). Immobilization test of barnacle nauplius larvae (Balanus amphitrite) was conducted to assess the acute toxicity of organic UV filters to marine organisms. Benzophenone-8 and 4-methylbenzylidene camphor showed relatively higher toxicity with the 50% effect concentrations (EC50) of 2.2 and 3.9 mg/L, respectively. A preliminary risk assessment was conducted by the results obtained from our field and laboratory studies. Results showed that the risk to cause immobilization in barnacle nauplius larvae in associated with exposure to current levels of organic UV filters in the SCS was minimal.
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Affiliation(s)
- Mirabelle M P Tsui
- State Key Laboratory of Marine Pollution (SKLMP), Research Centre for the Oceans and Human Health, Shenzhen Key Laboratory for the Sustainable Use of Marine Biodiversity, City University of Hong Kong, Hong Kong SAR, China
| | - Lianguo Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Tangtian He
- State Key Laboratory of Marine Pollution (SKLMP), Research Centre for the Oceans and Human Health, Shenzhen Key Laboratory for the Sustainable Use of Marine Biodiversity, City University of Hong Kong, Hong Kong SAR, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Qi Wang
- State Key Laboratory of Marine Pollution (SKLMP), Research Centre for the Oceans and Human Health, Shenzhen Key Laboratory for the Sustainable Use of Marine Biodiversity, City University of Hong Kong, Hong Kong SAR, China
| | - Chenyan Hu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430072, China
| | - James C W Lam
- State Key Laboratory of Marine Pollution (SKLMP), Research Centre for the Oceans and Human Health, Shenzhen Key Laboratory for the Sustainable Use of Marine Biodiversity, City University of Hong Kong, Hong Kong SAR, China; Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong, China
| | - Paul K S Lam
- State Key Laboratory of Marine Pollution (SKLMP), Research Centre for the Oceans and Human Health, Shenzhen Key Laboratory for the Sustainable Use of Marine Biodiversity, City University of Hong Kong, Hong Kong SAR, China; Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China.
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7
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Chen L, Hu C, Lok-Shun Lai N, Zhang W, Hua J, Lam PKS, Lam JCW, Zhou B. Acute exposure to PBDEs at an environmentally realistic concentration causes abrupt changes in the gut microbiota and host health of zebrafish. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 240:17-26. [PMID: 29729565 DOI: 10.1016/j.envpol.2018.04.062] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 04/03/2018] [Accepted: 04/14/2018] [Indexed: 06/08/2023]
Abstract
Contamination from lower brominated PBDEs is ubiquitous in the environments. However, their effects on gut microbiota and intestinal health have not yet been investigated. This study exposed adult zebrafish to an environmentally realistic concentration of pentaBDE mixture (DE-71) at 5.0 ng/L for 7 days, after which metagenomic sequencing of the intestinal microbiome was conducted and host physiological activities in the intestine and liver were also examined. The results showed that acute exposure to DE-71 significantly shifted the gut microbial community in a sex-specific manner. Certain genera (e.g., Mycoplasma, Ruminiclostridium, unclassified Firmicutes sensu stricto, and Fusobacterium) disappeared from the DE-71-exposed intestines, resulting in decreased bacterial diversity. Bacterial metabolic functions in guts were also affected by DE-71, namely those covering energy metabolism, virulence, respiration, cell division, cell signaling, and stress response. In addition, measurement of diverse sensitive biomarkers showed that the health of male intestines was remarkably compromised by the DE-71 exposure, as indicated by the disruption to its neural signaling (serotonin), epithelial barrier integrity (tight junction protein 2), inflammatory response (interleukin 1β), oxidative stress and antioxidant capacity, as well as detoxifying potential (ethoxyresorufin-O-deethylase activity). However, female intestines maintained intact physiological activities. Compared to the direct impact on intestines, a latent effect of DE-71 was observed in livers. Co-occurrence network analysis demonstrated that the gut bacteria vigorously interacted to establish the fittest community under DE-71 stress by promoting the reproduction of favorable genera, while diminishing the survival of unfavorable ones. Significant correlations between the zebrafish gut microbiota and physiological activities (e.g., oxidative stress, detoxification, neurotransmission, and epithelial integrity) were also observed. Overall, this study has demonstrated, for the first time, the high susceptibility of gut microbiota and intestinal health of zebrafish to DE-71, thus warranting more work to reveal its mode of toxicity.
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Affiliation(s)
- Lianguo Chen
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong SAR, China; State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Chenyan Hu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430072, China
| | - Nelson Lok-Shun Lai
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Weipeng Zhang
- Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong SAR, China
| | - Jianghuan Hua
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Paul K S Lam
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - James C W Lam
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong SAR, China; Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong SAR, China.
| | - Bingsheng Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
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Po BHK, Chiu JMY. Transgenerational impairments of reproduction and development of the marine invertebrate Crepidula onyx resulted from long-term dietary exposure of 2,2',4,4'-tetrabromodiphenyl ether (BDE-47). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 235:730-738. [PMID: 29339342 DOI: 10.1016/j.envpol.2017.12.087] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 12/20/2017] [Accepted: 12/22/2017] [Indexed: 06/07/2023]
Abstract
Polybrominated diphenyl ethers have become ubiquitous in the environment and elevated concentrations have often been found in marine organisms. Using the gastropod Crepidula onyx as a study model, this multigenerational study sets out to test the hypotheses that 1) parental dietary exposure to environmentally realistic levels of 2,2',4,4'-tetrabrominated diphenyl ether (BDE-47) would lead to transgenerational impairments on fitness traits of marine invertebrates, and 2) the organisms might develop adaptation/acclimation after exposure for one or more generations. F0 generation of C. onyx was fed with the dinoflagellate Isochrysis galbana encapsulated with two concentrations of BDE-47 (1.78 and 16.0 ng million cells-1, respectively), and half of the F1 offspring from the higher concentration treatment was returned to control condition (transgenerational group), while the other half received BDE-47 treatment continuously (continuous treatment group). Bioaccumulation and maternal transfer of BDE-47 were evident in all life stages of the F0 generation and in F1 eggs, respectively. Exposure to BDE-47 reduced fecundity, delayed sexual maturity, and impeded embryonic development in F0 to F2. In particular, developmental toxicity of F2 embryos was apparent in the transgenerational group, but not in the continuous treatment group, even when BDE-47 was not detected in the F2 embryos nor in their mothers and they have never been exposed to the chemical. This study also suggested that the offspring might have developed adaptation/acclimation to the exposure of BDE-47 within two generations of exposure, and that the physiological alterations associated with acclimation/adaptation might have hindered the normal larval development under a stress free condition. These findings highlighted the need for long-term multigenerational studies in the ecological risk assessment of chemicals alike.
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Affiliation(s)
- Beverly H K Po
- Department of Biology, Hong Kong Baptist University, Hong Kong SAR, China; School of Biological Sciences, University of Hong Kong, Hong Kong SAR, China
| | - Jill M Y Chiu
- Department of Biology, Hong Kong Baptist University, Hong Kong SAR, China.
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Chen L, Guo Y, Hu C, Lam PKS, Lam JCW, Zhou B. Dysbiosis of gut microbiota by chronic coexposure to titanium dioxide nanoparticles and bisphenol A: Implications for host health in zebrafish. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 234:307-317. [PMID: 29190539 DOI: 10.1016/j.envpol.2017.11.074] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 11/23/2017] [Accepted: 11/23/2017] [Indexed: 05/26/2023]
Abstract
Gut microbiota is of critical relevance to host health. However, toxicological understanding of environmental pollutants on gut microbiota is limited, not to mention their combined effects. In the present study, adult zebrafish (Danio rerio) were exposed to titanium dioxide nanoparticles (nano-TiO2; 100 μg/L), bisphenol A (BPA; 0, 2, and 20 μg/L) or their binary mixtures for three months. Sequencing of 16S rRNA amplicons found that nano-TiO2 and BPA coexposure shifted the intestinal microbial community, interacting in an antagonistic manner when the BPA concentration was low but in a synergistic manner at a higher BPA concentration. Sex- and concentration-dependent responses to the coexposure regime were also observed for zebrafish growth and intestinal health (e.g. neurotransmission, epithelial barrier permeability, inflammation, and oxidative stress). Correlation analysis showed that oxidative stress after nano-TiO2 and BPA coexposure was tightly associated with the imbalanced ratio of pathogenic Lawsonia and normal metabolic Hyphomicrobium, where higher abundance of Lawsonia but lower abundance of Hyphomicrobium were induced concurrently. A positive relationship was observed between zebrafish body weight and the abundance of Bacteroides in the gut, which was also closely associated with the genera of Anaerococcus, Finegoldia, and Peptoniphilus. This study revealed, for the first time, the combined effects of nano-TiO2 and BPA coexposure on the dynamics of the gut microbiome, which proved to have toxicological implications for zebrafish host health.
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Affiliation(s)
- Lianguo Chen
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China; State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Yongyong Guo
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Chenyan Hu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430072, China
| | - Paul K S Lam
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China
| | - James C W Lam
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China; Department of Science and Environmental Studies, The Education University of Hong Kong, 10 Lo Ping Road, Tai Po, New Territories, Hong Kong, China.
| | - Bingsheng Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
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Chen L, Zhang W, Hua J, Hu C, Lok-Shun Lai N, Qian PY, Lam PKS, Lam JCW, Zhou B. Dysregulation of Intestinal Health by Environmental Pollutants: Involvement of the Estrogen Receptor and Aryl Hydrocarbon Receptor. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:2323-2330. [PMID: 29356515 DOI: 10.1021/acs.est.7b06322] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
To determine how environmental pollutants induce dysbiosis of the gut microbiota, we exposed adult zebrafish to model pollutants with varied modes of action (atrazine, estradiol, polychlorinated biphenyl [PCB]126, and PCB153) for 7 days. Subsequently, metagenomic sequencing of the intestines was performed to compare the gut microbiomes among the groups. We observed clear compound- and sex-specific responses to xenobiotic stress. Principal component analysis revealed involvement of the aryl hydrocarbon receptor (AhR) and, to a lesser extent, the estrogen receptor (ER) in the dysregulation of the intestinal microbiota. The model pollutants differentially impaired intestinal and hepatic physiological activities, as indicated by assessments of gut motility, epithelial permeability, inflammation, and oxidative stress. Correlation analysis showed that abnormal Aeromonas reproduction, especially in the PCB126 groups, was significantly positively associated with oxidative damage. Aeromonas closely interacted with Mannheimia and Blastococcus to regulate intestinal permeability. In summary, we demonstrated that ER and AhR signaling regulated the dynamics of the gut microbiota. Our findings provide new mechanistic insight into the complex interactions between the host metabolism and gut microbiota, which may contribute to the grouped assessment of environmental pollutants in future.
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Affiliation(s)
- Lianguo Chen
- State Key Laboratory in Marine Pollution, City University of Hong Kong , Kowloon, Hong Kong SAR, China
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences , Wuhan 430072, China
| | - Weipeng Zhang
- Division of Life Science, Hong Kong University of Science and Technology , Clear Water Bay, Hong Kong SAR, China
| | - Jianghuan Hua
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences , Wuhan 430072, China
| | - Chenyan Hu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology , Wuhan 430072, China
| | - Nelson Lok-Shun Lai
- State Key Laboratory in Marine Pollution, City University of Hong Kong , Kowloon, Hong Kong SAR, China
| | - Pei-Yuan Qian
- Division of Life Science, Hong Kong University of Science and Technology , Clear Water Bay, Hong Kong SAR, China
| | - Paul K S Lam
- State Key Laboratory in Marine Pollution, City University of Hong Kong , Kowloon, Hong Kong SAR, China
| | - James C W Lam
- State Key Laboratory in Marine Pollution, City University of Hong Kong , Kowloon, Hong Kong SAR, China
- Department of Science and Environmental Studies, The Education University of Hong Kong , Hong Kong SAR, China
| | - Bingsheng Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences , Wuhan 430072, China
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11
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Wang L, Zheng M, Gao Y, Cui J. In vitro study on the joint hepatoxicity upon combined exposure of cadmium and BDE-209. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 57:62-69. [PMID: 29216509 DOI: 10.1016/j.etap.2017.11.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 11/27/2017] [Accepted: 11/28/2017] [Indexed: 06/07/2023]
Abstract
Joint toxicity is an important issue during the risk assessment of environmental pollutants. Contamination of heavy metals and persistent organic pollutants (POPs) under the environmental and biological settings poses substantial health risk to humans. Although previous studies demonstrated the co-occurrence of cadmium and decabrominated diphenyl ether (BDE-209) in environmental mediums, food chains and even human body, their potentially joint toxicities remain elusive thus far. Our investigation here with respect to the hepatotoxicity in vitro clearly demonstrated that combined exposure of cadmium and BDE-209 aggravated the injuries in hepatocytes, which was evidenced by the additive effects on the induction of remarkable morphological alternations, LDH release, cell apoptosis and necrosis, impairment of mitochondrial activity and transmembrane potential. Enhanced ROS production was one of the mechanisms for cell apoptosis and death upon joint treatment. Additionally, more cadmium-treated cells underwent apoptosis than BDE-209-treated cells while more ROS was generated with BDE-209 treatment, indicating that other mechanisms might be involved in cadmium-induced apoptosis. Our results would be helpful for evaluating the joint-hepatotoxicity upon combined exposure of cadmium and BDE-209 as well as investigating the underlying mechanisms.
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Affiliation(s)
- Lixin Wang
- College of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China.
| | - Miaomiao Zheng
- College of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Yu Gao
- College of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China; Xiqing District Environmental Protection Monitoring Station, Tianjin 300380, China
| | - Jiansheng Cui
- College of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China.
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12
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Chen L, Wang X, Zhang X, Lam PKS, Guo Y, Lam JCW, Zhou B. Transgenerational endocrine disruption and neurotoxicity in zebrafish larvae after parental exposure to binary mixtures of decabromodiphenyl ether (BDE-209) and lead. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017. [PMID: 28649046 DOI: 10.1016/j.envpol.2017.06.053] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Polybrominated diphenyl ethers (PBDEs) and heavy metals are two key groups of electric and electronic equipment contaminants. Despite their co-occurrence in aquatic environments, their combined effects remain largely unknown, particularly under a chronic exposure regime. In the present study, adult zebrafish (Danio rerio) were exposed to environmentally relevant concentrations of BDE-209 and lead (Pb), or their binary mixtures, for 3 months. After chronic parental exposure, increased transfer of BDE-209 and Pb to the offspring eggs was activated in the coexposure groups, with BDE-197 being the predominant PBDE congener, indicating the dynamic metabolism of BDE-209 in parental zebrafish. In the presence of Pb, culturing the eggs in clean water until 5 days post-fertilization (dpf) further accelerated the debromination of BDE-209 towards BDE-197 in the offspring, caused by the preferential removal of bromine atoms at meta positions. BDE-209 and Pb combinations induced reproductive and thyroid endocrine disruption in adults, which resulted in an imbalanced deposition of hormones in the eggs. However, compared with single chemical exposure, the larval offspring at 5 dpf from the coexposure groups had reversed the adverse influences from maternal origin. In addition, the interaction between BDE-209 and Pb led to transgenerational developmental neurotoxicity in the larval offspring, where inhibited neuronal growth and neurotransmitter signaling, disorganized muscular assembly, and impaired visual function contributed to the observed neurobehavioral deficits. Overall, depending on specific biological events, the complex interaction between BDE-209 and Pb under chronic exposure resulted in significant alterations in their environmental fate and toxicological actions, thus complicating the accurate evaluation of ecological risks and constituting an unquantified threat to environmental safety.
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Affiliation(s)
- Lianguo Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; State Key Laboratory in Marine Pollution, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Xianfeng Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Xiaohua Zhang
- Department of Science and Environmental Studies, The Education University of Hong Kong, 10 Lo Ping Road, Tai Po, New Territories, Hong Kong, China
| | - Paul K S Lam
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Yongyong Guo
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - James C W Lam
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China; Department of Science and Environmental Studies, The Education University of Hong Kong, 10 Lo Ping Road, Tai Po, New Territories, Hong Kong, China.
| | - Bingsheng Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
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13
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Okay OS, Karacık B, Güngördü A, Yılmaz A, Koyunbaba NC, Yakan SD, Henkelmann B, Schramm KW, Ozmen M. Monitoring of organic pollutants in marine environment by semipermeable membrane devices and mussels: accumulation and biochemical responses. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:19114-19125. [PMID: 28660514 DOI: 10.1007/s11356-017-9594-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 06/20/2017] [Indexed: 06/07/2023]
Abstract
This study involves the monitoring of organic pollutants using transplanted mussels (Mytilus galloprovincialis) as bioindicator organisms and semipermeable membrane devices (SPMDs) as passive samplers. Mussels and SPMDs were deployed to marinas, shipyards and shipbreaking yards on the coastal area of Turkey and retrieved after 60 days. Polycyclic aromatic hydrocarbons (PAH), polychlorinated biphenyls (PCB) and organochlorine pesticide (OCP) compounds were analysed with high-resolution GC-MS. Total PAH concentrations in SPMDs and mussels ranged from 200 to 4740 ng g sampler-1 and from 7.0 to 1130 ng g-1 in wet weight (ww). PCB and OCP concentrations in SPMDs changed between 0.04-200 and 4.0-26 ng g sampler-1, respectively. The highest PCB (190 ng g-1 ww) and OCP (200 ng g-1 ww) concentrations in mussels were measured at shipyard stations. A strong correlation was observed between the PAH and PCB concentrations in SPMDs and mussels. Enzyme assays (acetylcholinesterase, ethoxyresorufin-O-deethylase, glutathione S-transferase, glutathion reductase and carboxylesterase activities) were performed as biomarkers to reveal the effects of pollution on the mussels. There was no clear relationship found between the enzyme levels and the pollutant concentrations in mussels. Integrated biomarker responses were calculated to interpret the overall effect of pollutants.
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Affiliation(s)
- Oya S Okay
- Faculty of Naval Architecture and Ocean Engineering, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey.
| | - Burak Karacık
- Faculty of Naval Architecture and Ocean Engineering, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey
| | - Abbas Güngördü
- Arts and Sciences Faculty, Department of Biology, Laboratory of Environmental Toxicology, Inönü University, 44069, Malatya, Turkey
| | - Atilla Yılmaz
- Faculty of Naval Architecture and Ocean Engineering, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey
| | - Nazmi C Koyunbaba
- Faculty of Naval Architecture and Ocean Engineering, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey
| | - Sevil D Yakan
- Faculty of Naval Architecture and Ocean Engineering, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey
| | - Bernhard Henkelmann
- Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Ecological Chemistry, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - Karl-Werner Schramm
- Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Ecological Chemistry, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
- Department für Biowissenschaften, TUM, Wissenschaftszentrum Weihenstephan für Ernährung und Landnutzung, Weihenstephaner Steig 23, 85350, Freising, Germany
| | - Murat Ozmen
- Arts and Sciences Faculty, Department of Biology, Laboratory of Environmental Toxicology, Inönü University, 44069, Malatya, Turkey
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14
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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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15
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Liu X, Shen X, Lai Y, Ji K, Sun H, Wang Y, Hou C, Zou N, Wan J, Yu J. Toxicological proteomic responses of halophyte Suaeda salsa to lead and zinc. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2016; 134P1:163-171. [PMID: 27616546 DOI: 10.1016/j.ecoenv.2016.07.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 07/12/2016] [Accepted: 07/13/2016] [Indexed: 06/06/2023]
Abstract
The long term (30 days) toxicological effects of environmentally relevant concentrations of Pb2+ (20μg/L) and Zn2+ (100μg/L) were characterized in Suaeda salsa using proteomics techniques. The responsive proteins were related to metabolism (Krebs cycle and Calvin cycle), protein biosynthesis, stress and defense, energy, signaling pathway and photosynthesis in Pb2+, Zn2+ and Pb2++ Zn2+ exposed groups in S. salsa after exposures for 30 days. The proteomic profiles also showed differential responses in S. salsa to metal exposures. In Pb2+-treated group, the proteins were categorized into cystein metabolism and pentose phosphate pathway. The responsive proteins were basically involved in glutathione metabolism, glycolysis, cystein and methane metabolism, and voltage-dependent anion channel in Zn2+-treated group. In Pb2++ Zn2+-treated group, the proecular mechanism at protein level remtein responses were devided into tyrosine metabolism and glycolysis. Our results showed that the two typical heavy metals, lead and zinc, could induce toxicological effects in halophyte S. salsa at protein level.
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Affiliation(s)
- Xiaoli Liu
- School of Life Sciences, Ludong University, Yantai 264025, PR China.
| | - Xuejiao Shen
- School of Life Sciences, Ludong University, Yantai 264025, PR China
| | - Yongkai Lai
- School of Life Sciences, Ludong University, Yantai 264025, PR China
| | - Kang Ji
- School of Life Sciences, Ludong University, Yantai 264025, PR China
| | - Hushan Sun
- School of Life Sciences, Ludong University, Yantai 264025, PR China
| | - Yiyan Wang
- School of Life Sciences, Ludong University, Yantai 264025, PR China
| | - Chengzong Hou
- School of Life Sciences, Ludong University, Yantai 264025, PR China
| | - Ning Zou
- School of Life Sciences, Ludong University, Yantai 264025, PR China
| | - Junli Wan
- School of Life Sciences, Ludong University, Yantai 264025, PR China
| | - Junbao Yu
- The Coastal Resources and Environment Team for Blue-Yellow Area, Ludong University, Yantai 264025, PR China
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16
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Chen L, Ye R, Zhang W, Hu C, Zhou B, Peterson DR, Au DWT, Lam PKS, Qian PY. Endocrine Disruption throughout the Hypothalamus–Pituitary–Gonadal–Liver (HPGL) Axis in Marine Medaka (Oryzias melastigma) Chronically Exposed to the Antifouling and Chemopreventive Agent, 3,3′-Diindolylmethane (DIM). Chem Res Toxicol 2016; 29:1020-8. [DOI: 10.1021/acs.chemrestox.6b00074] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lianguo Chen
- HKUST
Shenzhen Research Institute and Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong SAR, China
| | | | - Weipeng Zhang
- HKUST
Shenzhen Research Institute and Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong SAR, China
| | | | - Bingsheng Zhou
- State
Key Laboratory of Freshwater Ecology and Biotechnology, Institute
of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | | | | | | | - Pei-Yuan Qian
- HKUST
Shenzhen Research Institute and Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong SAR, China
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