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Le TTY, García MR, Nachev M, Grabner D, Balsa-Canto E, Hendriks AJ, Sures B. Development of a PBPK Model for Silver Accumulation in Chub Infected with Acanthocephalan Parasites. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:12514-12525. [PMID: 30251844 DOI: 10.1021/acs.est.8b04022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Simultaneous presence of metals and parasites in fish might lead to potential risks to human health. Parasites might influence metal accumulation and disturb detoxification in fish, thereby affecting biomarkers of fish responses as well as metal biomagnification in humans. It is, therefore, of importance to take into account parasite infection when investigating metal accumulation in fish. However, mechanisms of metal accumulation and distribution in fish-parasite systems are not integrated into current approaches. The present study proposes a new physiologically based pharmacokinetic model for mechanistic simulation of metal partitioning between intestinal parasites and their hosts. As a particular case, Ag accumulation in the system of chub Squalius cephalus and the acanthocephalan Pomphorhynchus tereticollis was investigated. As a novelty, fish cardiac output and organ-specific blood flow distribution were incorporated in our model. This approach distinguishes the current model from the ones developed previously. It also facilitates model extrapolation and application to varying conditions. In general, the model explained Ag accumulation in the system well, especially in chub gill, storage (including skin, muscle, and carcass), and liver. The highest concentration of Ag was found in the liver. The accumulation of Ag in the storage, liver, and gill compartments followed a similar pattern, i.e., increasing during the exposure and decreasing during the depuration. The model also generated this observed trend. However, the model had a weaker performance for simulating Ag accumulation in the intestine and the kidney. Silver accumulation in these organs was less evident with considerable variations.
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Affiliation(s)
- T T Yen Le
- Department of Aquatic Ecology and Centre for Water and Environmental Research (ZWU) , University of Duisburg-Essen , D-45141 Essen , Germany
| | - Míriam R García
- Process Engineering Group , Spanish Council for Scientific Research, IIM-CSIC , 36208 Vigo , Spain
| | - Milen Nachev
- Department of Aquatic Ecology and Centre for Water and Environmental Research (ZWU) , University of Duisburg-Essen , D-45141 Essen , Germany
| | - Daniel Grabner
- Department of Aquatic Ecology and Centre for Water and Environmental Research (ZWU) , University of Duisburg-Essen , D-45141 Essen , Germany
| | - Eva Balsa-Canto
- Process Engineering Group , Spanish Council for Scientific Research, IIM-CSIC , 36208 Vigo , Spain
| | - A Jan Hendriks
- Department of Environmental Science, Faculty of Science , Radboud University Nijmegen , 6525 HP Nijmegen , The Netherlands
| | - Bernd Sures
- Department of Aquatic Ecology and Centre for Water and Environmental Research (ZWU) , University of Duisburg-Essen , D-45141 Essen , Germany
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Naïja A, Kestemont P, Chénais B, Haouas Z, Blust R, Helal AN, Marchand J. Cadmium exposure exerts neurotoxic effects in peacock blennies Salaria pavo. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 143:217-227. [PMID: 28551579 DOI: 10.1016/j.ecoenv.2017.05.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 05/16/2017] [Accepted: 05/20/2017] [Indexed: 06/07/2023]
Abstract
Cadmium (Cd) is considered as an important factor involved in several neurological disturbances. The aim of this study was to assess the effects of Cd in the brain of peacock blennies Salaria pavo, a species used as a bioindicator of water pollution. A sublethal contamination of 2mg CdCl2 L-1 was performed over periods of 1, 4, 10 and 15 days. Total Cd accumulation was measured in brains and displayed low concentrations throughout the experiment. Partial-length cDNA of different ATP-binding cassette transporters (abcb1, abcc1, abcc2, abcg2 proteins) and acetylcholinesterase (ache) were characterized. mRNA expressions profiles displayed an up-regulation of abcc2 mRNA after 4 days of Cd exposure only while abcg2 mRNA was down-regulated after 10 days only. For AChE, the mRNA transcription and the activity of the enzyme were followed and highlighted that Cd exerted an inhibitory effect on the nervous information transmission. At the histological level, fish exhibited pathological symptoms in the optic tectum and the cerebellum and results showed that the cerebellum was the most affected organ.
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Affiliation(s)
- Azza Naïja
- Bioressources: Integrative Biology and Valuation (BIOLIVAL), Higher Institute of Biotechnology of Monastir, Avenue Tahar Hadded, BP 74, 5000 Monastir, Tunisia
| | - Patrick Kestemont
- Research Unit in Environmental and Evolutionary Biology (URBE), University of Namur, Rue de Bruxelles 61, B-5000 Namur, Belgium
| | - Benoit Chénais
- EA2160 Mer Molécules Santé, LUNAM, IUML-FR 3473 CNRS, University of Le Mans, Le Mans, France
| | - Zohra Haouas
- Research unit of Genetic, Laboratory of Histology and Cytogenetic, Faculty of Medicine, Avenue Avicenne 5019, Monastir, Tunisia
| | - Ronny Blust
- Systemic Physiological and Ecotoxicological Research (SPHERE), Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium
| | - Ahmed Noureddine Helal
- Bioressources: Integrative Biology and Valuation (BIOLIVAL), Higher Institute of Biotechnology of Monastir, Avenue Tahar Hadded, BP 74, 5000 Monastir, Tunisia
| | - Justine Marchand
- EA2160 Mer Molécules Santé, LUNAM, IUML-FR 3473 CNRS, University of Le Mans, Le Mans, France.
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Abdel-Gaber R, Abdel-Ghaffar F, Abdallah Shazly M, Morsy K, Al Quraishy S, Mohamed S, Mehlhorn H. Morphological re-description of Electrotaenia malapteruri (Cestoda: Proteocephalidae) and Dujardinnascaris malapteruri (Nematoda: Heterocheilidae) infecting the Electric catfish Malapterurus electricus and heavy metal accumulation in host and parasites in relation to water and sediment analysis in Lake Manzala, North Delta, Egypt. Acta Parasitol 2017; 62:319-335. [PMID: 28426422 DOI: 10.1515/ap-2017-0040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 01/19/2017] [Indexed: 11/15/2022]
Abstract
Parasites are one of the most serious limiting factors in aquaculture. The Electric catfish Malapterurus electricus was subjected to study the prevalence and mean intensity of parasitic infections throughout the whole year of 2015. Heavy metals accumulation in host fish and parasites were determined in relation to water quality and sediments of two different sites of Lake Manzala (Manzala and Bahr El-Baqar), Egypt. A total of 100 specimens of Electric catfish were collected and examined for the presence of helminth parasites. Two parasite species were recovered and morphologically identified. These were cestoda Electrotaenia malapteruri and nematode Dujardinnascaris malapteruri. Heavy metal analysis in water and sediments showed that measured heavy metals in Bahr El-Baqar were found in risky levels higher than permissible limits and Manzala site. Sediments were found to contain a higher level of metals than water samples. Heavy metals accumulation in recovered parasites and their host were also determined and showed significantly higher concentrations in parasites compared to their host tissues. According to bioconcentration factors, E. malapteruri showed that highest accumulation rate for all recorded elements up to 302. Essential elements like Cu and Fe were found in significantly higher concentrations in D. malapteruri, whereas E. malapteruri accumulated elements Cd, Pb, Ni, Mn, Zn and Ca to a significantly higher degree. Accordingly, the ratios (C[D.malapteruri]/C[E. malapteruri]) for most essential elements were higher than 0.5. Therefore, fish cestodes can be regarded as useful bio-indicators more than nematodes when evaluating the environmental pollution of aquatic ecosystems by heavy metals.
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Affiliation(s)
| | | | | | - Kareem Morsy
- Zoology Department, Faculty of Science, Cairo University, Cairo
| | - Saleh Al Quraishy
- Zoology Department, College of Science, King Saud University, Riyadh
| | - Sanna Mohamed
- Zoology Department, Faculty of Science, Cairo University, Cairo
| | - Heinz Mehlhorn
- Parasitology Institute, Düsseldorf University, Düsseldorf
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Sures B, Nachev M, Selbach C, Marcogliese DJ. Parasite responses to pollution: what we know and where we go in 'Environmental Parasitology'. Parasit Vectors 2017; 10:65. [PMID: 28166838 PMCID: PMC5294906 DOI: 10.1186/s13071-017-2001-3] [Citation(s) in RCA: 154] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Accepted: 01/24/2017] [Indexed: 01/13/2023] Open
Abstract
Environmental parasitology deals with the interactions between parasites and pollutants in the environment. Their sensitivity to pollutants and environmental disturbances makes many parasite taxa useful indicators of environmental health and anthropogenic impact. Over the last 20 years, three main research directions have been shown to be highly promising and relevant, namely parasites as accumulation indicators for selected pollutants, parasites as effect indicators, and the role of parasites interacting with established bioindicators. The current paper focuses on the potential use of parasites as indicators of environmental pollution and the interactions with their hosts. By reviewing some of the most recent findings in the field of environmental parasitology, we summarize the current state of the art and try to identify promising ideas for future research directions. In detail, we address the suitability of parasites as accumulation indicators and their possible application to demonstrate biological availability of pollutants; the role of parasites as pollutant sinks; the interaction between parasites and biomarkers focusing on combined effects of parasitism and pollution on the health of their hosts; and the use of parasites as indicators of contaminants and ecosystem health. Therefore, this review highlights the application of parasites as indicators at different biological scales, from the organismal to the ecosystem.
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Affiliation(s)
- Bernd Sures
- Aquatic Ecology and Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstr. 5, D-45141, Essen, Germany.,Department of Zoology, University of Johannesburg, PO Box 524, Auckland Park 2006, Johannesburg, South Africa
| | - Milen Nachev
- Aquatic Ecology and Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstr. 5, D-45141, Essen, Germany.
| | - Christian Selbach
- Water Research Group, Unit for Environmental Sciences and Management, North-West University, Private Bag X6001, Potchefstroom, 2520, South Africa
| | - David J Marcogliese
- Aquatic Contaminants Research Division, Water Science and Technology Directorate, Science and Technology Branch, Environment and Climate Change Canada, St. Lawrence Centre, 105 McGill Street, 7th floor, Montreal, QC, H2Y 2E7, Canada.,St. Andrews Biological Station, Fisheries and Oceans Canada, 531 Brandy Cove Road, St, Andrews, NB, E5B 2 L9, Canada
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