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Karray S, Marchand J, Geffard A, Rebai T, Denis F, Chénais B, Hamza-Chaffai A. Metal Contamination and Biomarkers in Cerastoderma glaucum: A Multi-level Approach. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2023; 84:484-503. [PMID: 37119272 DOI: 10.1007/s00244-023-00999-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 04/17/2023] [Indexed: 06/01/2023]
Abstract
In this study, we focused on evaluating the responses of the cockle, Cerastoderma glaucum to in situ exposures to metals at three sites in the Gulf of Gabes in the coastal zone of Tunisia differing in levels of metal contamination. Firstly, we examined the general physiological state of the organisms. Secondly, we evaluated the bioaccumulation of several metals (Cd, Cu, Zn, Ni) in the cockles. Thirdly, we focused on evaluating histologically changes in gametogenesis and sexual maturity of the organisms. Finally, we determined the expression of seven key genes encoding enzymes or proteins involved in responses to different types of environmental stressors. Results showed a decrease in the general physiological status of the cockles, including a reduced condition index, sex ratios skewed to females (70% and 80% females in the intermediate and the contaminated site, respectively) and greater mortalities in tests under anoxic conditions (i.e., stress on stress test) in cockles collected from the most contaminated site (LT50 = 2.88 days) compared to the cockles from the intermediate site (LT50 = 5 days) and the less contaminated site (LT50 = 6 days). Results for metal bioaccumulation showed that the levels of Cd, Cu, Zn and Ni in cockles were consistent with the contaminant gradient, with the highest levels in cockles from the most contaminated site (1.04; 4.92; 52.76 and 13.81 µg/g dw, respectively), followed by those from the intermediate site (0.34; 2.94; 36.94; 17.40 µg/g dw, respectively) and then the less contaminated site (0.065; 1.27; 21.62 and 5.40 µg/g dw, respectively). Results from the gametogenesis and maturity index showed few differences in the reproductive cycle of cockles collected from the three study sites. There were different patterns of gene expression that were divided into three groups in terms of responses: (1) expression of genes involved in metal detoxification, ATP Binding Cassette Subfamily B Member 1 (ABCB1) and metallothionein MT) and genes for superoxide dismutases (i.e., Mn SOD and CuZn SOD), which did not show any difference in their levels of expression; (2) heat shock protein 70 (HSP70) gene expression, which decreased in cockles according to the pollution gradient, and (3) expression of catalase (CAT) and cytochrome oxidase subunit 1 (COI) genes was threefold and 1000-fold higher in cockles from intermediate and most contaminated sites compared to the less contaminated site. Therefore, changes in overall physiological condition, sex ratios and expression of HSP70, CAT and COI genes may be appropriate biomarkers for in situ studies of the impacts of metals in cockles. However, these biomarkers should be coupled to proteomics studies.
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Affiliation(s)
- Sahar Karray
- Université du Maine - Le Mans, EA 2460 Mer Molécules Santé, Institut Universitaire Mer et Littoral - FR3473 CNRS, 72085, Le Mans Cedex, France.
- Laboratoire d'Ecotoxicologie Marine et Environnementale, Université de Sfax, Sfax, Tunisia.
| | - Justine Marchand
- Université du Maine - Le Mans, EA 2460 Mer Molécules Santé, Institut Universitaire Mer et Littoral - FR3473 CNRS, 72085, Le Mans Cedex, France
| | - Alain Geffard
- Université de Reims-Champagne Ardenne, EA 4689 Interactions Animal Environnement, BP 1039, 51687, Reims Cedex 2, France
| | - Tarek Rebai
- Laboratoire d'histologie à la faculté de médecine de Sfax, Université de Sfax, Sfax, Tunisia
| | - Françoise Denis
- Université du Maine - Le Mans, EA 2460 Mer Molécules Santé, Institut Universitaire Mer et Littoral - FR3473 CNRS, 72085, Le Mans Cedex, France
- UMR 7208 CNRS-MNHN-IRD-UPMC Biologie des Organismes et des Ecosystèmes Aquatiques (BOREA), Concarneau, France
| | - Benoît Chénais
- Université du Maine - Le Mans, EA 2460 Mer Molécules Santé, Institut Universitaire Mer et Littoral - FR3473 CNRS, 72085, Le Mans Cedex, France
| | - Amel Hamza-Chaffai
- Laboratoire d'Ecotoxicologie Marine et Environnementale, Université de Sfax, Sfax, Tunisia
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Zhang X, Li F, Ji C, Wu H. Toxicological mechanism of cadmium in the clam Ruditapes philippinarum using combined ionomic, metabolomic and transcriptomic analyses. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 323:121286. [PMID: 36791949 DOI: 10.1016/j.envpol.2023.121286] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 02/08/2023] [Accepted: 02/12/2023] [Indexed: 06/18/2023]
Abstract
Cadmium (Cd) contamination in marine environment poses great risks to the organisms due to its potential adverse effects. In the present study, the toxicological effects and mechanisms of Cd at environmentally relevant concentrations (5 and 50 μg/L) on clam Ruditapes philippinarum after 21 days were investigated by combined ionomic, metabolomic, and transcriptomic analyses. Results showed that the uptake of Cd significantly decreased the concentrations of Cu, Zn, Sr, Se, and Mo in the whole soft tissue from 50 μg/L Cd-treated clams. Significantly negative correlations were observed between Cd and essential elements (Zn, Sr, Se, and Mo). Altered essential elements homeostasis was associated with the gene regulation of transport and detoxification, including ATP-binding cassette protein subfamily B member 1 (ABCB1) and metallothioneins (MT). The crucial contribution of Se to Cd detoxification was also found in clams. Additionally, gene set enrichment analysis showed that Cd could interfere with proteolysis by peptidases and decrease the translation efficiency at 50 μg/L. Cd inhibited lipid metabolism in clams and increased energy demand by up-regulating glycolysis and TCA cycle. Osmotic pressure was regulated by free amino acids, including alanine, glutamate, taurine, and homarine. Meanwhile, significant alterations of some differentially expressed genes, such as dopamine-β-hydroxylase (DBH), neuroligin (NLGN), NOTCH 1, and chondroitin sulfate proteoglycan 1 (CSPG1) were observed in clams, which implied potential interference with synaptic transmission. Overall, through integrating multiple omics, this study provided new insights into the toxicological mechanisms of Cd, particularly in those mediated by dysregulation of essential element homeostasis.
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Affiliation(s)
- Xiaoyu Zhang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, 264003, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Fei Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, 264003, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Chenglong Ji
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, 264003, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, PR China; Center for Ocean Mega-Science, Chinese Academy of Sciences (CAS), Qingdao, 266071, PR China
| | - Huifeng Wu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, 264003, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, PR China; Center for Ocean Mega-Science, Chinese Academy of Sciences (CAS), Qingdao, 266071, PR China.
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Merad I, Bellenger S, Hichami A, Khan NA, Soltani N. Effect of cadmium exposure on essential omega-3 fatty acids in the edible bivalve Donax trunculus. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:18242-18250. [PMID: 28484978 DOI: 10.1007/s11356-017-9031-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 04/12/2017] [Indexed: 06/07/2023]
Abstract
Donax trunculus is the most consumed bivalve by the local population of the Northeast Algeria for its nutritional value. Therefore, the aim of the current study was to determine the effects of cadmium (Cd), a known toxic metal, on the alterations in main essential omega-3 fatty acids, i.e., eicosapentaenoic acid (EPA; C20:5n-3) and docosahexaenoic acid (DHA; C22:6n-3), in male and female gonads of D. trunculus during the reproduction period at spring (before spawning). Additionally, this work seeks to describe the relation between EPA and DHA with non-methylene-interrupted dienoic (NMID) fatty acids, and explores their possible contribution of to protect against Cd stress. The samples were collected at El Battah, a relatively clean sea shore, and reared in the laboratory. Physico-chemical parameters such as temperature, pH, salinity, and dissolved oxygen were measured. Cd was added to the rearing water at two sublethal concentrations (LC10 and LC25-96h, as determined previously). A two-way ANOVA analysis indicated significant effects of concentrations and genders for both fatty acids. Our results showed a significant reduction in EPA and DHA concentrations in the both genders, with a strong effect in females. There was also a negative correlation between NMID fatty acids and the two essential omega-3 fatty acids for each gender.
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Affiliation(s)
- Isma Merad
- Laboratory of Applied Animal Biology, University Badji Mokhtar of Annaba, 23000, Annaba, Algeria.
| | - Sandrine Bellenger
- INSERM UMR 1231 Equipe - Lipoproteins and lipid transfers in sterile and septic inflammation (LIPNESS), Université Bourgogne Franche Comté (UBFC), UFR SVTE, 6 Boulevard Gabriel, 21000, Dijon, France
| | - Aziz Hichami
- INSERM UMR 1231 Equipe Physiologie de Nutrition & Toxicologie (NUTox), UFR SVTE, 6 Boulevard Gabriel, 21000, Dijon, France
| | - Naim Akhtar Khan
- INSERM UMR 1231 Equipe Physiologie de Nutrition & Toxicologie (NUTox), UFR SVTE, 6 Boulevard Gabriel, 21000, Dijon, France
| | - Noureddine Soltani
- Laboratory of Applied Animal Biology, University Badji Mokhtar of Annaba, 23000, Annaba, Algeria
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Manna A, Sundaram E, Amutha C, Vasantha VS. Efficient Removal of Cadmium Using Edible Fungus and Its Quantitative Fluorimetric Estimation Using ( Z)-2-(4 H-1,2,4-Triazol-4-yl)iminomethylphenol. ACS OMEGA 2018; 3:6243-6250. [PMID: 30023944 PMCID: PMC6044826 DOI: 10.1021/acsomega.8b00342] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 05/22/2018] [Indexed: 06/08/2023]
Abstract
Microbes accumulate heavy metals after adsorption or absorption. This study exhibited that Trametes versicolor can tolerate up to 5 mg/g concentration of cadmium. Change in fungus morphology due to cadmium along with its absorption were analyzed using SEM, XRD, and EDAX. Cadmium absorption usually increased with time, and it was determined quantitatively by a fluorimetry technique using a synthesized imine fluorophore as a specific probe and compared with results obtained from atomic absorption spectroscopy (AAS). The intensity of the cadmium-specific XRD peak gradually increased up to the seventh day, and the absorption by the organisms reduced the concentration of cadmium even from the effluent of the plating industry. After the seventh day, Trametes versicolor absorbed almost 0.300 mg/g concentration of cadmium as visualized under high content screening from the fluorescence appearance of hyphae. Hence it can be concluded that Trametes versicolor may play a key role in reducing cadmium from a contaminated environment.
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Affiliation(s)
- Abhijit Manna
- Department of Animal
Behaviour and Physiology, School of Biological Sciences, Madurai Kamaraj University, Madurai, 625 021 Tamilnadu, India
| | - Ellairaja Sundaram
- Department
of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, 625 021 Tamilnadu, India
| | - Chinnaiah Amutha
- Department of Animal
Behaviour and Physiology, School of Biological Sciences, Madurai Kamaraj University, Madurai, 625 021 Tamilnadu, India
| | - Vairathevar Sivasamy Vasantha
- Department
of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, 625 021 Tamilnadu, India
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Omrane F, Gargouri I, Khadhraoui M, Elleuch B, Zmirou-Navier D. Risk assessment of occupational exposure to heavy metal mixtures: a study protocol. BMC Public Health 2018; 18:314. [PMID: 29506513 PMCID: PMC5836390 DOI: 10.1186/s12889-018-5191-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Accepted: 02/20/2018] [Indexed: 01/19/2023] Open
Abstract
Background Sfax is a very industrialized city located in the southern region of Tunisia where heavy metals (HMs) pollution is now an established matter of fact. The health of its residents mainly those engaged in industrial metals-based activities is under threat. Indeed, such workers are being exposed to a variety of HMs mixtures, and this exposure has cumulative properties. Whereas current HMs exposure assessment is mainly carried out using direct air monitoring approaches, the present study aims to assess health risks associated with chronic occupational exposure to HMs in industry, using a modeling approach that will be validated later on. Methods To this end, two questionnaires were used. The first was an identification/descriptive questionnaire aimed at identifying, for each company: the specific activities, materials used, manufactured products and number of employees exposed. The second related to the job-task of the exposed persons, workplace characteristics (dimensions, ventilation, etc.), type of metals and emission configuration in space and time. Indoor air HMs concentrations were predicted, based on the mathematical models generally used to estimate occupational exposure to volatile substances (such as solvents). Later on, and in order to validate the adopted model, air monitoring will be carried out, as well as some biological monitoring aimed at assessing HMs excretion in the urine of workers volunteering to participate. Lastly, an interaction-based hazard index HIint and a decision support tool will be used to predict the cumulative risk assessment for HMs mixtures. Discussion One hundred sixty-one persons working in the 5 participating companies have been identified. Of these, 110 are directly engaged with HMs in the course of the manufacturing process. This model-based prediction of occupational exposure represents an alternative tool that is both time-saving and cost-effective in comparison with direct air monitoring approaches. Following validation of the different models according to job processes, via comparison with direct measurements and exploration of correlations with biological monitoring, these estimates will allow a cumulative risk characterization.
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Affiliation(s)
- Fatma Omrane
- Laboratory of Environmental Engineering and EcoTechnology, National Engineering School of Sfax (LR16ES19) (ENIS), Sfax University, Sfax, Tunisia. .,Lorraine University, Medical School, INGRES (EA 7298), Vandœuvre-les-Nancy, Nancy, France. .,EHESP School of Public Health, Rennes, France.
| | - Imed Gargouri
- Laboratory of Environmental Engineering and EcoTechnology, National Engineering School of Sfax (LR16ES19) (ENIS), Sfax University, Sfax, Tunisia.,Sfax University, Faculty of Medicine, Sfax, Tunisia
| | - Moncef Khadhraoui
- Laboratory of Environmental Engineering and EcoTechnology, National Engineering School of Sfax (LR16ES19) (ENIS), Sfax University, Sfax, Tunisia
| | - Boubaker Elleuch
- Laboratory of Environmental Engineering and EcoTechnology, National Engineering School of Sfax (LR16ES19) (ENIS), Sfax University, Sfax, Tunisia
| | - Denis Zmirou-Navier
- Lorraine University, Medical School, INGRES (EA 7298), Vandœuvre-les-Nancy, Nancy, France. .,EHESP School of Public Health, Rennes, France. .,INSERM U1085 (IRSET), Rennes, France.
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Mezghani-Chaari S, Machreki-Ajimi M, Hamza-Chaffai A, Minier C. High estradiol exposure disrupts the reproductive cycle of the clam Ruditapes decussatus in a sex-specific way. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:26670-26680. [PMID: 28956239 DOI: 10.1007/s11356-017-0146-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 09/07/2017] [Indexed: 06/07/2023]
Abstract
Bivalve species may be susceptible to environmental estrogenic compounds including estradiol (E2). However, they are able to biotransform the hormone quite readily and inactivate its estrogenic action. To study the long-term effects of elevated free E2 tissue levels, we transiently exceeded the biotransformation capacity of the clam Ruditapes decussatus by exposing them with high E2 concentrations (400 ng/L) and subsequently study the consequences on gametogenesis during the following reproductive cycle. Exposure to 400 ngE2/L led to a significant increase in tissue free E2 levels, which reached 10-50 ng E2Eq/gww. No deleterious effect on gonado-somatic index (GSI), condition index (CI), or ability to respond to the stress on stress test could be detected after a month of exposure, suggesting the absence of negative effects on the clam's health. However, a marked increase in gametogenesis could be observed in both sexes during the exposure. Subsequent transplantation of the clams in the field allowed the normal development of the male clams and maturation of the gonads without any detrimental effect observed after 4 months. In contrast, in early July, all female clams formerly exposed to E2 showed lower health status, and only ovaries with atretic oocytes while all control and indigenous females were normal and mature. These results show a sex-specific effect of high E2 exposure and suggest either a direct or indirect role for E2 in R. decussatus' reproduction.
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Affiliation(s)
- Sawssan Mezghani-Chaari
- Unit of Marine and Environmental Toxicology, Sfax University, IPEIS, BP 1172, 3018, Sfax, Tunisia.
- Laboratory of Ecotoxicology, UMR-I 02 SEBIO, Normandie University, BP 540, 76058, Le Havre, France.
| | - Monia Machreki-Ajimi
- Unit of Marine and Environmental Toxicology, Sfax University, IPEIS, BP 1172, 3018, Sfax, Tunisia
| | - Amel Hamza-Chaffai
- Unit of Marine and Environmental Toxicology, Sfax University, IPEIS, BP 1172, 3018, Sfax, Tunisia
| | - Christophe Minier
- Laboratory of Ecotoxicology, UMR-I 02 SEBIO, Normandie University, BP 540, 76058, Le Havre, France
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Martínez-Paz P, Morales M, Sánchez-Argüello P, Morcillo G, Martínez-Guitarte JL. Cadmium in vivo exposure alters stress response and endocrine-related genes in the freshwater snail Physa acuta. New biomarker genes in a new model organism. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 220:1488-1497. [PMID: 27890585 DOI: 10.1016/j.envpol.2016.10.012] [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: 06/01/2016] [Revised: 08/18/2016] [Accepted: 10/05/2016] [Indexed: 06/06/2023]
Abstract
The freshwater snail Physa acuta is a sensitive organism to xenobiotics that is appropriate for toxicity testing. Cadmium (Cd) is a heavy metal with known toxic effects on several organisms, which include endocrine disruption and activation of the cellular stress responses. There is scarce genomic information on P. acuta; hence, in this work, we identify several genes related to the hormonal system, the stress response and the detoxification system to evaluate the effects of Cd. The transcriptional activity of the endocrine-related genes oestrogen receptor (ER), oestrogen-related receptor (ERR), and retinoid X receptor (RXR), the heat shock proteins genes hsp70 and hsp90 and a metallothionein (MT) gene was analysed in P. acuta exposed to Cd. In addition, the hsp70 and hsp90 genes were also evaluated after heat shock treatment. Real-time reverse transcriptase-polymerase chain reaction (qRT-PCR) analysis showed that Cd presence induced a significant increase in the mRNA levels of ER, ERR and RXR, suggesting a putative mode of action that could explain the endocrine disruptor activity of this heavy metal at the molecular level on Gastropoda. Moreover, the hsp70 gene was upregulated after 24-h Cd treatment, but the hsp90 gene expression was not affected. In contrast, the hsp70 and hsp90 genes were strongly upregulated during heat shock response. Finally, the MT gene expression showed a non-significant variability after Cd exposure. In conclusion, this study provides, for the first time, information about the effects of Cd on the endocrine system of Gastropoda at the molecular level and offers new putative biomarker genes that could be useful in ecotoxicological studies, risk assessment and bioremediation.
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Affiliation(s)
- Pedro Martínez-Paz
- Grupo de Biología y Toxicología Ambiental, Departamento de Física Matemática y de Fluidos, Facultad de Ciencias, Universidad Nacional de Educación a Distancia (UNED), Senda del Rey 9, 28040 Madrid, Spain.
| | - Mónica Morales
- Grupo de Biología y Toxicología Ambiental, Departamento de Física Matemática y de Fluidos, Facultad de Ciencias, Universidad Nacional de Educación a Distancia (UNED), Senda del Rey 9, 28040 Madrid, Spain
| | - Paloma Sánchez-Argüello
- Laboratorio de Ecotoxicología, Departamento de Medioambiente, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Ctra. La Coruña km 7, 28040 Madrid, Spain
| | - Gloria Morcillo
- Grupo de Biología y Toxicología Ambiental, Departamento de Física Matemática y de Fluidos, Facultad de Ciencias, Universidad Nacional de Educación a Distancia (UNED), Senda del Rey 9, 28040 Madrid, Spain
| | - José Luis Martínez-Guitarte
- Grupo de Biología y Toxicología Ambiental, Departamento de Física Matemática y de Fluidos, Facultad de Ciencias, Universidad Nacional de Educación a Distancia (UNED), Senda del Rey 9, 28040 Madrid, Spain
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8
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Karray S, Tastard E, Moreau B, Delahaut L, Geffard A, Guillon E, Denis F, Hamza-Chaffai A, Chénais B, Marchand J. Transcriptional response of stress-regulated genes to industrial effluent exposure in the cockle Cerastoderma glaucum. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:17303-17316. [PMID: 25613800 DOI: 10.1007/s11356-015-4108-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Accepted: 01/11/2015] [Indexed: 06/04/2023]
Abstract
This study assessed the responses of molecular biomarkers and heavy metal levels in Cerastoderma glaucum exposed for 1 week to two industrial effluents (1%) discharged into the Tunisian coastal area, F1 and F2, produced by different units of production of a phosphate treatment plant. A significant uptake of metals (Cd, Cu, Zn, and Ni) was observed in exposed cockles compared to controls, with an uptake higher for F1 than for F2. A decrease in LT50 (stress on stress test) was also observed after an exposure to the effluent F1. Treatments resulted in different patterns of messenger RNA (mRNA) expression of the different genes tested in this report. Gene transcription monitoring performed on seven genes potentially involved in the tolerance to metal exposure showed that for both exposures, mechanisms are rapidly and synchronically settled down to prevent damage to cellular components, by (1) handling and exporting out metal ions through the up-regulation of ATP-binding cassette xenobiotic transporter (ABCB1) and metallothionein (MT), (2) increasing the mRNA expression of antioxidant enzymes (catalase (CAT), superoxide dismutases, CuZnSOD and MnSOD), (3) protecting and/or repairing proteins through the expression of heat shock protein 70 (HSP70) mRNAs, and (4) increasing ATP production (through the up-regulation of cytochrome c oxidase 1 (CO1)) to provide energy for cells to tolerate stress exposure. The tools developed may be useful both for future control strategies and for the use of the cockle C. glaucum as a sentinel species.
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Affiliation(s)
- Sahar Karray
- EA 2460 Mer Molécules Santé, Institut Universitaire Mer et Littoral - FR3473 CNRS, Université du Maine - Le Mans, 72085, Le Mans Cedex, France
- Laboratoire d'Ecotoxicologie Marine et Environnementale, Université de Sfax, Sfax, Tunisia
| | - Emmanuelle Tastard
- EA 2460 Mer Molécules Santé, Institut Universitaire Mer et Littoral - FR3473 CNRS, Université du Maine - Le Mans, 72085, Le Mans Cedex, France
| | - Brigitte Moreau
- EA 2460 Mer Molécules Santé, Institut Universitaire Mer et Littoral - FR3473 CNRS, Université du Maine - Le Mans, 72085, Le Mans Cedex, France
| | - Laurence Delahaut
- UMR-I 02 Stress Environnementaux et Biosurveillance des Milieux aquatiques (SEBIO), Université de Reims Champagne-Ardenne, Moulin de la Housse, BP 1039, 51687, Reims Cedex 2, France
| | - Alain Geffard
- UMR-I 02 Stress Environnementaux et Biosurveillance des Milieux aquatiques (SEBIO), Université de Reims Champagne-Ardenne, Moulin de la Housse, BP 1039, 51687, Reims Cedex 2, France
| | - Emmanuel Guillon
- UMR 7312 CNRS-URCA Institut de Chimie Moléculaire de Reims (ICMR) Groupe Chimie de Coordination, Université de Reims Champagne-Ardenne, Moulin de la Housse, BP 1039, 51687, Reims Cedex 2, France
| | - Françoise Denis
- EA 2460 Mer Molécules Santé, Institut Universitaire Mer et Littoral - FR3473 CNRS, Université du Maine - Le Mans, 72085, Le Mans Cedex, France
- UMR 7208 CNRS-MNHN-IRD-UPMC, Biologie des Organismes et des Ecosystèmes Aquatiques (BOREA), Concarneau, France
| | - Amel Hamza-Chaffai
- Laboratoire d'Ecotoxicologie Marine et Environnementale, Université de Sfax, Sfax, Tunisia
| | - Benoît Chénais
- EA 2460 Mer Molécules Santé, Institut Universitaire Mer et Littoral - FR3473 CNRS, Université du Maine - Le Mans, 72085, Le Mans Cedex, France
| | - Justine Marchand
- EA 2460 Mer Molécules Santé, Institut Universitaire Mer et Littoral - FR3473 CNRS, Université du Maine - Le Mans, 72085, Le Mans Cedex, France.
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9
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Pope ND, Childs K, Dang C, Davey MS, O'Hara SCM, Langston K, Minier C, Pascoe PL, Shortridge E, Langston WJ. Intersex in the clam Scrobicularia plana (Da Costa): Widespread occurrence in English Channel estuaries and surrounding areas. MARINE POLLUTION BULLETIN 2015; 95:598-609. [PMID: 25837773 DOI: 10.1016/j.marpolbul.2015.02.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 02/26/2015] [Accepted: 02/26/2015] [Indexed: 06/04/2023]
Abstract
Estuarine clams Scrobicularia plana were sampled from 108 intertidal locations around the English Channel and adjacent areas. Although S. plana is believed to be a strict gonochorist, 58% of the populations sampled included intersexed individuals (described as male clams exhibiting ovotestis). Over the entire region, on average, 8.6% of male clams exhibited intersex, although proportions of affected males ranged from 0% to 53% depending on location. The severity of intersex was assessed using a simple classification scale, with the majority of individuals showing low levels of impact. Sex ratios were significantly skewed at some sites. There were no significant relationships between incidence or severity of intersex; or with size or parasitism of individual clams. Intersex in S. plana is a useful tool to assess endocrine disruptive effects in estuaries, although mechanisms of impact and causative agents remain uncertain.
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Affiliation(s)
- N D Pope
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK.
| | - K Childs
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
| | - C Dang
- Laboratory of Ecotoxicology, Universite du Havre, BP540, 76058 Le Havre, France
| | - M S Davey
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
| | - S C M O'Hara
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
| | - K Langston
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
| | - C Minier
- Laboratory of Ecotoxicology, Universite du Havre, BP540, 76058 Le Havre, France
| | - P L Pascoe
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
| | - E Shortridge
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
| | - W J Langston
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
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10
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Annabi A, Said K, Messaoudi I. Heavy metal levels in gonad and liver tissues-effects on the reproductive parameters of natural populations of Aphanius facsiatus. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:7309-7319. [PMID: 23645000 DOI: 10.1007/s11356-013-1745-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Accepted: 04/15/2013] [Indexed: 06/02/2023]
Abstract
The impact of heavy metal levels (Cd, Cu, and Zn) on the reproductive parameters in natural populations of the Mediterranean killifish Aphanius fasciatus was monitored in four sites of the Tunisian coast. Our study covered a period of the reproductive cycle, from April to November 2009. The significantly higher levels of Cd, Cu, and Zn in the liver and gonads for both sexes (p<0.05) were observed in the most polluted site (Sfax coast). During the reproductive cycle of A. fasciatus, an unbalanced sex ratio in favor to females was observed for all the studied populations. The progression of the hepato- (HSI), gonadosomatic (GSI), and K-factor revealed a spatio-temporal variation between populations during the sampling period. Estradiol-17β amounts in the gonad tissues of females captured from the studied sites showed a significant difference, and the highest concentrations were noticed in the control site (Luza). Taking together, our data provide the first evidence of a physiologically stress and a disturbance of the reproductive status in natural populations of A. fasciatus.
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Affiliation(s)
- Ali Annabi
- Laboratoire de Recherche (LR11-ES41): Génétique, Biodiversité et Valorisation des Bio-ressources, Institut Supérieur de Biotechnologie de Monastir, Université de Monastir, Monastir, Tunisia,
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11
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Smaoui-Damak W, Guebsi F, Karray S, Rebai T, Costil K, Hamza-Chaffai A. Storage and reproductive strategy of the carpet-shell clam, Ruditapes decussatusin the Gulf of Gabès (Tunisia). INVERTEBR REPROD DEV 2012. [DOI: 10.1080/07924259.2011.607518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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12
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Chora S, Starita-Geribaldi M, Guigonis JM, Samson M, Roméo M, Bebianno MJ. Effect of cadmium in the clam Ruditapes decussatus assessed by proteomic analysis. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2009; 94:300-308. [PMID: 19716188 DOI: 10.1016/j.aquatox.2009.07.014] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2009] [Revised: 07/15/2009] [Accepted: 07/22/2009] [Indexed: 05/28/2023]
Abstract
Cadmium, an environmental stressor due to its toxicity, persistence and accumulation in biota, is widespread in the aquatic environment. Cadmium accumulation kinetics have revealed that Ruditapes decussatus has a high affinity to this metal. Proteomics is an effective tool to evaluate the toxic effects of contaminants. The aim of this study was to investigate the Cd effects in the gill and digestive gland of the sentinel species R. decussatus. Protein expression profiles (PEPs) in the clam tissues exposed to Cd (40 microg l(-1), 21 days) were compared to unexposed ones. Cd induces major changes in tissue-specific protein expression profiles in gill and digestive gland. This tissue dependent response results mainly from differences in Cd accumulation, protein inhibition and/or autophagy. An overall decrease of protein spots was detected in both treated tissues, being higher in gill. Some of the spots more drastically altered after pollutants exposure were excised and nine were identified by micro liquid chromatography tandem mass spectrometry (LC-MS/MS). Proteins identified by homology search in databases included: three proteins (8-fold) up-regulated, one down-regulated, four suppressed and one induced. Cd induces major changes in proteins involved in cytoskeletal structure maintenance (muscle-type actin, adductor muscle actin and beta-tubulin), cell maintenance (Rab GDP) and metabolism (ALDH and MCAD, both identified by de novo sequencing) suggesting potential energetic change. They provide a valuable knowledge of Cd effects at biochemical and molecular levels in the gill and digestive gland of R. decussatus.
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Affiliation(s)
- Suze Chora
- University of Algarve, CIMA, Faculty of Marine and Environmental Sciences, Campus de Gambelas, 8000-139 Faro, Portugal
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13
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Ronco AM, Urrutia M, Montenegro M, Llanos MN. Cadmium exposure during pregnancy reduces birth weight and increases maternal and foetal glucocorticoids. Toxicol Lett 2009; 188:186-91. [PMID: 19379801 DOI: 10.1016/j.toxlet.2009.04.008] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2009] [Revised: 04/08/2009] [Accepted: 04/09/2009] [Indexed: 10/20/2022]
Abstract
Cadmium exposure induces low birth weight through unknown mechanisms. Since low birth weight is associated to foetal exposure to high glucocorticoids (GC) concentrations, we hypothesized that low birth weight induced by prenatal exposure to Cd(2+) is, at least in part, mediated by higher foetal exposure to GC, specifically corticosterone, the main active GC in rodents. Pregnant rats were exposed to different dose of CdCl(2) administered in drinking water during the whole pregnancy period. At term, corticosterone was measured by enzyme immunoassay in maternal and foetal blood and in placental tissues. Cadmium was determined in placentas, maternal tissues (liver and kidney) and foetuses by inductively coupled plasma-mass spectrometry (ICP-MS). Placental 11beta-hydroxysteroid dehydrogenase type 2 (11beta-HSD2) activity and expression were determined by a radiometric conversion assay and quantitative RT-PCR respectively. Results demonstrated that 50 ppm of Cd(2+), which was accumulated in different maternal tissues but not in the foetus, reduced pup birth weights and increased plasma corticosterone concentrations, both in mother and foetus. Placental 11beta-HSD2 activity and expression did not change by the treatment. We conclude that 50 ppm of Cd(2+) administered during pregnancy, increase foetal corticosterone concentrations due, probably, to alterations of the regulatory mechanisms of placental barrier to GC causing a mild but significant reduced birth weight.
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Affiliation(s)
- A M Ronco
- Laboratory of Nutrition and Metabolic Regulation, Institute of Nutrition and Food Technology, INTA, University of Chile, Casilla 138-11, Santiago, Chile.
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