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Sedeño-Díaz JE, López-López E. Oxidative stress in Physella acuta: An integrative response of exposure to water from two rivers of Atlantic Mexican slope. Front Physiol 2022; 13:932537. [PMID: 36117701 PMCID: PMC9477652 DOI: 10.3389/fphys.2022.932537] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 08/08/2022] [Indexed: 11/13/2022] Open
Abstract
Freshwater pollution is a complex mixture of xenobiotics due to the wastewater and the various chemicals routinely applied to agricultural lands that are discharged into water bodies. Xenobiotics can exert damage to the aquatic biota threatening the biodiversity of aquatic ecosystems. The oxidative damage and antioxidant responses have been widely investigated in freshwater organisms, mainly in fish and some invertebrates but in freshwater snails are scarce. This study aimed to assess the oxidative stress exerted by potential toxicity of water from two rivers of the Mexican Atlantic Slope (Tecolutla and Tuxpan rivers) in a freshwater mollusk Physella acuta. Lipid peroxidation level and a battery of antioxidant enzymes (Superoxide dismutase, Catalase and Glutathione peroxidase) were measured in P. acuta. The results are contextualized from an ecological point of view, associating the bioassay results with water quality characteristics. Water samples were obtained from three study sites for each river (in two seasons: Northern wind and dry). Twelve water quality variables were analyzed, and an additional water sample was used to perform a static bioassay for 96 h with snails grown in laboratory. After the exposure, we assessed lipid peroxidation level and the antioxidant responses of P. acuta exposed to water of rivers, and the Integrated Biomarker Response was computed. The highest lipid peroxidation level occurred in organisms exposed to water during the Northern wind season in both rivers. During this season, in the Tecolutla river, the superoxide dismutase activity was able to counteract the lipid peroxidation process, representing an adaptive response. In contrast, in the Tuxpan river, the superoxide dismutase was unable to counteract that process, stimulating CAT and GPx activities. The Integrated Biomarker Response showed that the Tecolutla river had higher values in the upper reaches than the Tuxpan river, showing a decreasing downstream gradient in both seasons. In the Tuxpan river, during the Dry season, the IBR score showed an increasing downstream gradient. During the Northern wind season, the IBR was higher in the upper reaches of both rivers, possibly due to the increased materials transported by runoff from the catchment, which includes a complex mixture of xenobiotics that affects the health of the sentinel species and aquatic biota in general. Based on our results, Physella acuta is proposed as sentinel species.
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Affiliation(s)
- Jacinto Elías Sedeño-Díaz
- Coordinación Politécnica para la Sustentabilidad, Instituto Politécnico Nacional, Ciudad deMéxico, Mexico
- *Correspondence: Jacinto Elías Sedeño-Díaz,
| | - Eugenia López-López
- Laboratorio de Evaluación de la Salud de los Ecosistemas Acuáticos, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, Mexico
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Marçal R, Marques AM, Pacheco M, Guilherme S. Improving knowledge on genotoxicity dynamics in somatic and germ cells of crayfish (Procambarus clarkii). ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2022; 63:296-307. [PMID: 36054159 DOI: 10.1002/em.22501] [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: 03/04/2022] [Revised: 08/02/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
The harmful effects of pesticides can be extended beyond the exposure time scale. Appraisals combining exposure and long-term post-exposure periods appear as an unavoidable approach in pesticide risk assessment, thus allowing a better understanding of the real impact of agrochemicals in non-target organisms. This study aimed to evaluate the progression of genetic damage in somatic and germ tissues of the crayfish Procambarus clarkii, also seeking for gender-specificities, following exposure (7 days) to penoxsulam (23 μg L-1 ) and a post-exposure (70 days) period. The same approach was applied to the model genotoxicant ethyl methanesulfonate (EMS; 5 mg L-1 ) as a complementary mean to improve knowledge on genotoxicity dynamics (induction vs. recovery). Penoxsulam induced DNA damage in all tested tissues, disclosing tissue- and gender-specificities, where females showed to be more vulnerable than males in the gills, while males demonstrated higher susceptibility in what concerns internal organs, that is, hepatopancreas and gonad. Crayfish were unable to recover from the DNA damage induced by EMS in gills and hepatopancreas (both genders) as well as in spermatozoa. The genotoxicity in the hepatopancreas was only perceptible in the post-exposure period. Oxidative DNA lesions were identified in hepatopancreas and spermatozoa of EMS-exposed crayfish. The spermatozoa proved to be the most vulnerable cell type. It became clear that the characterization of the genotoxic hazard of a given agent must integrate a complete set of information, addressing different types of DNA damage, tissue- and gender-specificities, as well as a long-term appraisal of temporal progression of damage.
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Affiliation(s)
- Raquel Marçal
- Centre for Environmental and Marine Studies (CESAM), Department of Biology, University of Aveiro, Aveiro, Portugal
| | - Ana Margarida Marques
- Centre for Environmental and Marine Studies (CESAM), Department of Biology, University of Aveiro, Aveiro, Portugal
| | - Mário Pacheco
- Centre for Environmental and Marine Studies (CESAM), Department of Biology, University of Aveiro, Aveiro, Portugal
| | - Sofia Guilherme
- Centre for Environmental and Marine Studies (CESAM), Department of Biology, University of Aveiro, Aveiro, Portugal
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Ubrihien RP, Maher WA, Taylor AM, Stevens MM, Ezaz T. Fitness of Isidorella newcombi Following Multi-generational Cu Exposures: Mortality, Cellular Biomarkers and Life History Responses. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 82:520-538. [PMID: 35441861 PMCID: PMC9079030 DOI: 10.1007/s00244-022-00931-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 03/31/2022] [Indexed: 06/14/2023]
Abstract
The effects of multigenerational Cu exposure on the freshwater gastropod Isidorella newcombi were investigated. Snails were exposed to a range of treatment-specific Cu concentrations in the parental to F2 generations, and a common Cu concentration in the F3 generation. In the parental to F2 generations, some general responses to 3 days Cu exposures included reduced survival and feeding in snails exposed to higher Cu concentrations. This suggested that the snails exposed to the high Cu concentration were experiencing Cu-induced stress that may apply selection pressure. In the F3 generation, when all treatments were exposed to a common Cu concentration, increased survival was correlated with the pre-exposure Cu concentration history. Snails that had been pre-exposed to Cu also displayed reduced stress at a sub-lethal level, indicated by lower lysosomal destabilisation (LD). Mortality and LD responses in the F3 generation were not related to Cu tissue concentrations, indicating increased tolerance and reduced stress were not related to changes in Cu bioaccumulation. Total antioxidant capacity increased in the higher Cu concentration pre-exposure treatments which could be associated with lower Cu-induced stress, however, this is not supported by the oxidative damage marker lipid peroxidation, which also increased. While Cu tissue concentrations and oxidative stress markers were assessed to determine underlying reasons for increased tolerance in snails from a population with a multi-generational exposure history to Cu, the results were not conclusive. Despite this, it was demonstrated through increased survival and reduced LD that Cu tolerance can develop over a short evolutionary time scale.
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Affiliation(s)
- R P Ubrihien
- Centre for Applied Water Science, Institute for Applied Ecology, University of Canberra, Canberra, ACT, 2601, Australia.
| | - W A Maher
- Research School of Earth Sciences, Australian National University, Canberra, ACT, 2601, Australia
| | - A M Taylor
- Centre for Applied Water Science, Institute for Applied Ecology, University of Canberra, Canberra, ACT, 2601, Australia
| | - M M Stevens
- NSW Department of Primary Industries, Yanco Agricultural Institute, Private Mail Bag, Yanco, NSW, 2703, Australia
- Graham Centre for Agricultural Innovation NSW Department of Primary Industries, Charles Sturt University, Wagga Wagga, Australia
| | - T Ezaz
- Centre for Conservation Ecology and Genomics, Institute for Applied Ecology, University of Canberra, Canberra, ACT, 2601, Australia
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Fodor I, Koene JM, Pirger Z. Neuronal Transcriptome Analysis of a Widely Recognised Molluscan Model Organism Highlights the Absence of Key Proteins Involved in the De Novo Synthesis and Receptor-Mediation of Sex Steroids in Vertebrates. MALACOLOGIA 2021. [DOI: 10.4002/040.064.0103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- István Fodor
- NAP Adaptive Neuroethology, Balaton Limnological Research Institute, Eötvös Loránd Research Network (ELKH), Klebelsberg Kuno u. 3., H-8237 Tihany, Hungary
| | - Joris M. Koene
- Department of Ecological Science, Faculty of Science, Vrije Universiteit, Amsterdam, the Netherlands
| | - Zsolt Pirger
- NAP Adaptive Neuroethology, Balaton Limnological Research Institute, Eötvös Loránd Research Network (ELKH), Klebelsberg Kuno u. 3., H-8237 Tihany, Hungary
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5
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Magara G, Elia AC, Dörr AJM, Abete MC, Brizio P, Caldaroni B, Righetti M, Pastorino P, Scoparo M, Prearo M. Metal load and oxidative stress driven by organotin compounds on rainbow trout. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:35012-35022. [PMID: 33665696 PMCID: PMC8275540 DOI: 10.1007/s11356-021-12984-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 02/11/2021] [Indexed: 05/17/2023]
Abstract
Tributyltin-based (TBT) antifouling paints, widely used for the treatment of flooded surfaces, have been banned in 2008 for their high environmental persistence and bioaccumulation in aquatic organisms. Although it is still present in aquatic ecosystems, oxidative stress driven by TBT has been still poorly investigated in fish. The aim of the study was to examine the time-course stress responses in liver of rainbow trout that received a single intraperitoneal injection of tributyltin chloride (TBTC) or tributyltin ethoxide (TBTE), both at a dose of 0.05 and 0.5 mg/kg. Levels of metallothioneins, total glutathione, malondialdehyde, superoxide dismutase, catalase, glutathione peroxidase and glutathione S-transferase were evaluated at 3 and 6 days post-injection. Tin load was measured in the muscle of the same fish. Differences were observed in the time-course accumulation of tin with a clear dose-response relationship. Although individual oxidative stress biomarkers varied, the biomarker profile indicated different stress mechanisms caused by both TBTC and TBTE. The weak induction of metal-trapping metallothioneins and the changes of oxidative stress biomarkers suggested a stress-pressure in both TBT-treated trout, advising for an ecotoxicological risk for freshwater ecosystems.
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Affiliation(s)
- Gabriele Magara
- Department of Chemistry, Biology and Biotechnology, University of Perugia, via Elce di Sotto 8, 06123, Perugia, Italy
| | - Antonia Concetta Elia
- Department of Chemistry, Biology and Biotechnology, University of Perugia, via Elce di Sotto 8, 06123, Perugia, Italy.
| | - Ambrosius Josef Martin Dörr
- Department of Chemistry, Biology and Biotechnology, University of Perugia, via Elce di Sotto 8, 06123, Perugia, Italy
| | - Maria Cesarina Abete
- The Veterinary Medical Research Institute for Piemonte, Liguria and Valle d'Aosta, via Bologna 148, 10154, Torino, Italy
| | - Paola Brizio
- The Veterinary Medical Research Institute for Piemonte, Liguria and Valle d'Aosta, via Bologna 148, 10154, Torino, Italy
| | - Barbara Caldaroni
- Department of Chemistry, Biology and Biotechnology, University of Perugia, via Elce di Sotto 8, 06123, Perugia, Italy
| | - Marzia Righetti
- The Veterinary Medical Research Institute for Piemonte, Liguria and Valle d'Aosta, via Bologna 148, 10154, Torino, Italy
| | - Paolo Pastorino
- The Veterinary Medical Research Institute for Piemonte, Liguria and Valle d'Aosta, via Bologna 148, 10154, Torino, Italy
| | - Melissa Scoparo
- Department of Chemistry, Biology and Biotechnology, University of Perugia, via Elce di Sotto 8, 06123, Perugia, Italy
| | - Marino Prearo
- The Veterinary Medical Research Institute for Piemonte, Liguria and Valle d'Aosta, via Bologna 148, 10154, Torino, Italy
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Rodrigues S, Silva AM, Antunes SC. Assessment of 17α-ethinylestradiol effects in Daphnia magna: life-history traits, biochemical and genotoxic parameters. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:23160-23173. [PMID: 33442804 DOI: 10.1007/s11356-020-12323-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 12/30/2020] [Indexed: 06/12/2023]
Abstract
The occurrence of pharmaceuticals in aquatic ecosystems and the need to study them have increased over the years since they enter continuously the environment. Besides, these compounds are not intended for applications with environmental purposes, and therefore, little is known about their ecological effects, particularly in non-target organisms, as invertebrate species. Inside these substances, endocrine disrupting compounds (EDCs) have recently come into the limelight, due to environmental concentrations and consequently their detrimental effects on different organisms. 17α-ethinylestradiol (EE2) has been detected in the aquatic environment in various locations around the globe since it is the main synthetic hormone used as a female oral contraceptive and is also applied in veterinary medicine and animal production. The present study was intended to assess the chronic effects of EE2, in the non-target organism as Daphnia magna. Thus, to analyze the individual and subindividual impact, this aquatic organism was chronically exposed (21 days) to 0.00 (control group), 0.10, 1.00, 10.0, and 100 μg/L of EE2. Results here obtained demonstrated that D. magna exposed to the EE2 concentrations had significant effects in individual (life-history) and sub-individual (biochemical levels) parameters. Alterations as anticipation in the age at first reproduction, a decrease of the growth rate, oxidative stress, and lipid peroxidation were detected, as well as genotoxic damage. Therefore, it was possible to infer that EE2 can disrupt several metabolic pathways and physiological functions of D. magna, since EE2 demonstrated ecotoxicity, at environmentally relevant concentrations. This work reinforces the importance of examining the effects of more relevant exposures (more prolonged and with ecologically pertinent concentrations) of potential endocrine disruptors like EE2, to the freshwater organisms and ecosystem.
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Affiliation(s)
- Sara Rodrigues
- Departamento de Biologia da Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre s/n, 4169-007, Porto, Portugal.
- CIMAR/CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Matosinhos, Portugal.
| | - Ana Marta Silva
- Departamento de Biologia da Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre s/n, 4169-007, Porto, Portugal
| | - Sara Cristina Antunes
- Departamento de Biologia da Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre s/n, 4169-007, Porto, Portugal
- CIMAR/CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Matosinhos, Portugal
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7
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El-Gendy KS, Gad AF, Radwan MA. Physiological and behavioral responses of land molluscs as biomarkers for pollution impact assessment: A review. ENVIRONMENTAL RESEARCH 2021; 193:110558. [PMID: 33285153 DOI: 10.1016/j.envres.2020.110558] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 11/04/2020] [Accepted: 11/28/2020] [Indexed: 06/12/2023]
Abstract
Environmental pollution caused by human activities is a global public health concern. This review discusses the impact of different types of pollutants such as pesticides, metals, nanoparticles and others on land molluscs. These molluscs are of great interest as good model organisms for studying biomarker responses in ecotoxicological monitoring programs. Several biomarkers are utilized to characterize and quantify the exposure and harmful impacts of various pollutants. In this review, we have identified physiological and behavioral endpoints (feeding, growth, avoidance, mucus secretion, locomotion and reproductive behavior) for the diagnosis of environmental pollution. The present review displays that all types of pollutants can disturb physiological and behavioral endpoints of gastropods, and these impacts depend on the matrix, exposure time and route as well as the type and concentration of the pollutants in the environment. We have also confirmed that terrestrial gastropods particularly snails as sentinel species could be used as potential bioindicator organisms for environmental quality assessment and thus for predicting potential hazards to human health.
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Affiliation(s)
- K S El-Gendy
- Department of Pesticide Chemistry and Technology, Faculty of Agriculture, University of Alexandria, El-Shatby, 21545, Alexandria, Egypt
| | - A F Gad
- Department of Animal Pests, Plant Protection Research Institute, Agricultural Research Center, Alexandria, Egypt
| | - M A Radwan
- Department of Pesticide Chemistry and Technology, Faculty of Agriculture, University of Alexandria, El-Shatby, 21545, Alexandria, Egypt.
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Katsiadaki I, Schwarz TI, Cousins ARO, Scott AP. The Uptake of Ethinyl-Estradiol and Cortisol From Water by Mussels ( Mytilus spp.). Front Endocrinol (Lausanne) 2021; 12:794623. [PMID: 34975764 PMCID: PMC8714933 DOI: 10.3389/fendo.2021.794623] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 11/26/2021] [Indexed: 12/12/2022] Open
Abstract
Previous toxicokinetic studies have shown that mussels (Mytilus spp.) can readily absorb the three main mammalian sex steroids, estradiol (E2), testosterone (T) and progesterone (P) from water. They also have a strong ability to store E2 and the 5α-reduced metabolites of T and P in the form of fatty acid esters. These esters were shown to have half-lives that were measured in weeks (i.e. they were not subject to fast depuration). The present study looked at the toxicokinetic profile of two other common steroids that are found in water, the potent synthetic oestrogen, (ethinyl-estradiol) (EE2; one of the two components of 'the pill'), and cortisol, a natural stress steroid in vertebrates. In the first three hours of uptake, tritiated EE2 was found to be taken up at a similar rate to tritiated E2. However, the levels in the water plateaued sooner than E2. The ability of the animals to both esterify and sulphate EE2 was found to be much lower than E2, but nevertheless did still take place. After 24 h of exposure, the majority of radiolabelled EE2 in the animals was present in the form of free steroid, contrary to E2, which was esterified. This metabolism was reflected in a much lower half-life (of only 15 h for EE2 in the mussels as opposed to 8 days for E2 and >10 days for T and P). Intriguingly, hardly any cortisol (in fact none at all in one of the experiments) was absorbed by the mussels. The implications of this finding in both toxicokinetic profiling and evolutionary significance (why cortisol might have evolved as a stress steroid in bony fishes) are discussed.
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Affiliation(s)
- Ioanna Katsiadaki
- Centre for Environment, Fisheries and Aquaculture Science, Weymouth Laboratory, Weymouth, United Kingdom
- *Correspondence: Ioanna Katsiadaki,
| | - Tamar I. Schwarz
- Centre for Environment, Fisheries and Aquaculture Science, Weymouth Laboratory, Weymouth, United Kingdom
| | - Alex R. O. Cousins
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory, Lowestoft, United Kingdom
| | - Alexander P. Scott
- Centre for Environment, Fisheries and Aquaculture Science, Weymouth Laboratory, Weymouth, United Kingdom
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Ubrihien RP, Maher WA, Taylor AM, Stevens MM, Ezaz T. The Response of the Planorbid Snail Isidorella newcombi to Chronic Copper Exposure Over a 28-Day Period: Linking Mortality, Cellular Biomarkers, and Reproductive Responses. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2020; 79:391-405. [PMID: 33090264 DOI: 10.1007/s00244-020-00767-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 10/01/2020] [Indexed: 06/11/2023]
Abstract
The native freshwater gastropod Isidorella newcombi attacks the roots of developing rice plants in southern Australia and is controlled using copper sulphate. The apparent tolerance of this species to moderate levels of copper (Cu) exposure led us to investigate its potential usefulness as a biomonitor species. To assess its response to chronic Cu exposure, adult I. newcombi were exposed to 0-120 µg L-1 of Cu for 28 days. Lethal and sublethal responses were investigated. The relationships between subcellular biomarkers and life history traits also were explored. At exposure concentrations of 60 µg L-1 Cu and above, 100% mortality was observed during the 28-day exposure period. In these treatments, there was an exposure concentration dependent decrease in the time that the snails survived. In the surviving snails, there was an exposure concentration-dependent increase in tissue Cu concentration. In the snails exposed to Cu concentrations above 15 µg L-1, no eggs were produced during the final week of copper exposure, indicating that populations would not persist at Cu concentrations above 15 µg L-1. The general stress biomarker lysosomal membrane destabilisation (LD) indicated organisms exposed to 10 µg L-1 Cu and above were experiencing Cu induced stress. This suggests that LD could act as an early warning system for responses at higher levels of biological organisation in I. newcombi exposed to copper.
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Affiliation(s)
- R P Ubrihien
- Centre for Applied Water Science, University of Canberra, Canberra, ACT, 2601, Australia.
| | - W A Maher
- Research School of Earth Science, Australian National University, Canberra, ACT, 2601, Australia
| | - A M Taylor
- Centre for Applied Water Science, University of Canberra, Canberra, ACT, 2601, Australia
| | - M M Stevens
- NSW Department of Primary Industries, Yanco Agricultural Institute, Private Mail Bag, Yanco, NSW, 2703, Australia
- Graham Centre for Agricultural Innovation, NSW Department of Primary Industries and Charles Sturt University, North Wagga Wagga, NSW, Australia
| | - T Ezaz
- Centre for Conservation Ecology and Genetics, University of Canberra, Canberra, ACT, 2601, Australia
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Louzon M, Zahn S, Capelli N, Massemin S, Coeurdassier M, Pauget B, Gimbert F, de Vaufleury A. Impact of ageing and soil contaminants on telomere length in the land snail. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 201:110766. [PMID: 32531572 DOI: 10.1016/j.ecoenv.2020.110766] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 05/12/2020] [Accepted: 05/13/2020] [Indexed: 06/11/2023]
Abstract
Telomeres (TLs) are non-coding DNA sequences that are usually shortened with ageing and/or chemical exposure. Bioindicators such as the land snail can be used to assess the environmental risk of contaminated soils. As for most invertebrates, the evolution of TLs with ageing or exposure to contaminants is unknown in this mollusc. The aims of this study were to explore the relationships between ageing, contaminant exposure, sublethal effects and TL length in the terrestrial gastropod Cantareus aspersus. TL length was investigated in haemocytes from five age classes of C. aspersus. The impact of contaminants on sub-adult snails exposed to Cd, Hg or a mixture of polycyclic aromatic hydrocarbons (PAHs) in soils for one or two months was studied. Bioaccumulation, growth, sexual maturity and TLs were measured. TL attrition was significant for the juvenile and sub-adult stages, but not later. Exposure to Cd increased the mortality (around 30%). Exposure to polluted soils inhibited growth (19-40%) and sexual maturity (6-100%). Although the health of the snails exposed to Cd, Hg and PAHs was altered, TL length in haemocytes was not disturbed, suggesting a high capacity of this snail species to maintain its TLs in haemocytes under chemical stress. These results first address TL length in snails and reveal that the relationship commonly proposed for vertebrates between TL shortening and ageing or exposure to contaminants cannot be generalized.
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Affiliation(s)
- Maxime Louzon
- UMR CNRS 6249 Chrono-Environnement, University of Franche-Comté, 16 Route de Gray, 25030, Besançon Cedex, France
| | - Sandrine Zahn
- IPHC UMR 7178 DEPE CNRS, University of Strasbourg, 23 Rue du loess, 67087, Strasbourg, Cedex 3, France
| | - Nicolas Capelli
- UMR CNRS 6249 Chrono-Environnement, University of Franche-Comté, 16 Route de Gray, 25030, Besançon Cedex, France
| | - Sylvie Massemin
- IPHC UMR 7178 DEPE CNRS, University of Strasbourg, 23 Rue du loess, 67087, Strasbourg, Cedex 3, France
| | - Michaël Coeurdassier
- UMR CNRS 6249 Chrono-Environnement, University of Franche-Comté, 16 Route de Gray, 25030, Besançon Cedex, France
| | | | - Frédéric Gimbert
- UMR CNRS 6249 Chrono-Environnement, University of Franche-Comté, 16 Route de Gray, 25030, Besançon Cedex, France
| | - Annette de Vaufleury
- UMR CNRS 6249 Chrono-Environnement, University of Franche-Comté, 16 Route de Gray, 25030, Besançon Cedex, France.
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11
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Fodor I, Hussein AAA, Benjamin PR, Koene JM, Pirger Z. The unlimited potential of the great pond snail, Lymnaea stagnalis. eLife 2020; 9:e56962. [PMID: 32539932 PMCID: PMC7297532 DOI: 10.7554/elife.56962] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 05/27/2020] [Indexed: 12/14/2022] Open
Abstract
Only a limited number of animal species lend themselves to becoming model organisms in multiple biological disciplines: one of these is the great pond snail, Lymnaea stagnalis. Extensively used since the 1970s to study fundamental mechanisms in neurobiology, the value of this freshwater snail has been also recognised in fields as diverse as host-parasite interactions, ecotoxicology, evolution, genome editing and 'omics', and human disease modelling. While there is knowledge about the natural history of this species, what is currently lacking is an integration of findings from the laboratory and the field. With this in mind, this article aims to summarise the applicability of L. stagnalis and points out that this multipurpose model organism is an excellent, contemporary choice for addressing a large range of different biological questions, problems and phenomena.
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Affiliation(s)
- István Fodor
- NAP Adaptive Neuroethology, Department of Experimental Zoology, Balaton Limnological Institute, Centre for Ecological ResearchTihanyHungary
| | - Ahmed AA Hussein
- Department of Ecological Sciences, Faculty of Sciences, Vrije UniversiteitAmsterdamNetherlands
| | - Paul R Benjamin
- Sussex Neuroscience, School of Life Sciences, University of SussexBrightonUnited Kingdom
| | - Joris M Koene
- Section of Animal Ecology, Department of Ecological Science, Faculty of Earth and Life Sciences, Vrije Universiteit AmsterdamAmsterdamNetherlands
| | - Zsolt Pirger
- NAP Adaptive Neuroethology, Department of Experimental Zoology, Balaton Limnological Institute, Centre for Ecological ResearchTihanyHungary
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12
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Cuvillier-Hot V, Lenoir A. Invertebrates facing environmental contamination by endocrine disruptors: Novel evidences and recent insights. Mol Cell Endocrinol 2020; 504:110712. [PMID: 31962147 DOI: 10.1016/j.mce.2020.110712] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 01/08/2020] [Accepted: 01/10/2020] [Indexed: 02/08/2023]
Abstract
The crisis of biodiversity we currently experience raises the question of the impact of anthropogenic chemicals on wild life health. Endocrine disruptors are notably incriminated because of their possible effects on development and reproduction, including at very low doses. As commonly recorded in the field, the burden they impose on wild species also concerns invertebrates, with possible specificities linked with the specific physiology of these animals. A better understanding of chemically-mediated endocrine disruption in these species has clearly gained from knowledge accumulated on vertebrate models. But the molecular pathways specific to invertebrates also need to be reckoned, which implies dedicated research efforts to decipher their basic functioning in order to be able to assess its possible disruption. The recent rising of omics technologies opens the way to an intensification of these efforts on both aspects, even in species almost uninvestigated so far.
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Affiliation(s)
| | - Alain Lenoir
- IRBI, Institut de Recherche sur la Biologie de l'Insecte, UMR CNRS, Faculté des Sciences, Parc de Grandmont, Université de Tours, Tours, France
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Sainath SB, André A, Castro LFC, Santos MM. The evolutionary road to invertebrate thyroid hormone signaling: Perspectives for endocrine disruption processes. Comp Biochem Physiol C Toxicol Pharmacol 2019; 223:124-138. [PMID: 31136851 DOI: 10.1016/j.cbpc.2019.05.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 05/23/2019] [Accepted: 05/23/2019] [Indexed: 12/14/2022]
Abstract
Thyroid hormones (THs) are the only iodine-containing hormones that play fundamental roles in chordates and non-chordates. The chemical nature, mode of action and the synthesis of THs are well established in mammals and other vertebrates. Although thyroid-like hormones have been detected in protostomes and non-chordate deuterostomes, TH signaling is poorly understood as compared to vertebrates, particularly in protostomes. Therefore, the central objective of this article is to review TH system components and TH-induced effects in non-vertebrate chordates, non-chordate deuterostomes and protostomes based on available genomes and functional information. To accomplish this task, we integrate here the available knowledge on the THs signaling across non-vertebrate chordates, non-chordate deuterostomes and protostomes by considering studies encompassing TH system components and physiological actions of THs. We also address the possible interactions of thyroid disrupting chemicals and their effects in protostomes and non-chordate deuterostomes. Finally, the perspectives on current and future challenges are discussed.
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Affiliation(s)
- S B Sainath
- CIMAR/CIIMAR-Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal; Department of Biotechnology, Vikrama Simhapuri University, Nellore 524 003, AP, India.
| | - A André
- CIMAR/CIIMAR-Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal
| | - L Filipe C Castro
- CIMAR/CIIMAR-Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal; FCUP - Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal.
| | - M M Santos
- CIMAR/CIIMAR-Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal; FCUP - Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal.
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López-Doval JC, Freixa A, Santos LHMLM, Sanchís J, Rodríguez-Mozaz S, Farré M, Barceló D, Sabater S. Exposure to single and binary mixtures of fullerenes and triclosan: Reproductive and behavioral effects in the freshwater snail Radix balthica. ENVIRONMENTAL RESEARCH 2019; 176:108565. [PMID: 31280028 DOI: 10.1016/j.envres.2019.108565] [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: 02/18/2019] [Revised: 05/28/2019] [Accepted: 06/28/2019] [Indexed: 05/22/2023]
Abstract
Emerging pollutants occur in complex mixtures in rivers and have the potential to interact with freshwater organisms. The chronic effects of nominal exposure to 3 μg/L of fullerenes (C60) and 1 μg/L of triclosan (TCS) alone and in a binary mixture, were evaluated using the freshwater snail Radix balthica. Pollutants accumulation, reproductive output and feeding behavior were selected as sublethal endpoints. After 21 days of exposure, we did not observe interactive effects between TCS and C60 on the studied endpoints, except for the accumulation of C60 in R. balthica in TCS + C60 treatment, which was lower than when the fullerenes were alone. Neither TCS nor C60 caused significant effects on reproduction, expressed as number of eggs per individual, but an increase in the clutch size was observed in treatments with TCS at the third week of exposure, independently of the presence of C60 (16.15 ± 1.67 and 18.9 ± 4.01 eggs/egg mass in TCS and TCS + C60 treatments, respectively, vs. 13.17 ± 4.01 in control). The presence of C60 significantly enhanced the grazing activity of R. balthica during the first seven days (4.95 ± 1.35 and 3.91 ± 0.59% of the area grazed per individual in C60 and TCS + C60 treatments, respectively, vs 2.6 ± 0.39% in control). The accumulation of TCS was quite similar in treatments where this pollutant was present (BAF ≈ 1007 L/kg d.w.); however, the accumulation of C60 was higher when the nanoparticles were alone (BAF = 254.88 L/kg d.w.) than when it was in the binary mixture (BAF = 7.79 L/kg d.w). Overall, although TCS has been listed as an endocrine disrupter compound, no significant effects on reproduction were observed in the assayed conditions. Regarding C60, the limited effects on feeding activity and the low BAF obtained in this experiment indicate that fullerenes do not have ecological consequences of relevance at the studied environmental concentrations in freshwater snails.
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Affiliation(s)
- J C López-Doval
- Catalan Institute for Water Research (ICRA), Scientific and Technological Park of the University of Girona, H2O Building, C/Emili Grahit, 101, E17003, Girona, Catalonia, Spain; University of Girona, 17071, Girona, Catalonia, Spain.
| | - A Freixa
- Catalan Institute for Water Research (ICRA), Scientific and Technological Park of the University of Girona, H2O Building, C/Emili Grahit, 101, E17003, Girona, Catalonia, Spain; University of Girona, 17071, Girona, Catalonia, Spain
| | - L H M L M Santos
- Catalan Institute for Water Research (ICRA), Scientific and Technological Park of the University of Girona, H2O Building, C/Emili Grahit, 101, E17003, Girona, Catalonia, Spain; University of Girona, 17071, Girona, Catalonia, Spain
| | - J Sanchís
- Catalan Institute for Water Research (ICRA), Scientific and Technological Park of the University of Girona, H2O Building, C/Emili Grahit, 101, E17003, Girona, Catalonia, Spain; University of Girona, 17071, Girona, Catalonia, Spain; Water and Soil Quality Research Group, Institute of Environmental Assessment and Water Research (IDAEA- CSIC), C/Jordi Girona, 18-26, 08034, Barcelona, Catalonia, Spain
| | - S Rodríguez-Mozaz
- Catalan Institute for Water Research (ICRA), Scientific and Technological Park of the University of Girona, H2O Building, C/Emili Grahit, 101, E17003, Girona, Catalonia, Spain; University of Girona, 17071, Girona, Catalonia, Spain
| | - M Farré
- Water and Soil Quality Research Group, Institute of Environmental Assessment and Water Research (IDAEA- CSIC), C/Jordi Girona, 18-26, 08034, Barcelona, Catalonia, Spain
| | - D Barceló
- Catalan Institute for Water Research (ICRA), Scientific and Technological Park of the University of Girona, H2O Building, C/Emili Grahit, 101, E17003, Girona, Catalonia, Spain; Water and Soil Quality Research Group, Institute of Environmental Assessment and Water Research (IDAEA- CSIC), C/Jordi Girona, 18-26, 08034, Barcelona, Catalonia, Spain
| | - S Sabater
- Catalan Institute for Water Research (ICRA), Scientific and Technological Park of the University of Girona, H2O Building, C/Emili Grahit, 101, E17003, Girona, Catalonia, Spain; Institute of Aquatic Ecology, University of Girona, Campus de Montivili, 17071, Girona, Catalonia, Spain
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De Guglielmo V, Puoti R, Notariale R, Maresca V, Ausió J, Troisi J, Verrillo M, Basile A, Febbraio F, Piscopo M. Alterations in the properties of sperm protamine-like II protein after exposure of Mytilus galloprovincialis (Lamarck 1819) to sub-toxic doses of cadmium. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 169:600-606. [PMID: 30496991 DOI: 10.1016/j.ecoenv.2018.11.069] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 10/17/2018] [Accepted: 11/16/2018] [Indexed: 05/25/2023]
Abstract
Protamine-like proteins (PL-II, PL-III and PL-IV) represent the major basic nuclear component of Mytilus galloprovincialis L sperm chromatin. The present study investigates the effects induced on the properties of PL-II protein after exposure of Mytilus galloprovincialis L for 24 h to 1.5 and 5 µM CdCl2. We found cadmium accumulation in protamine-like proteins with a linear grow up with the exposition dose. In particular, after 5 µM CdCl2 mussels exposure, the mobility of PL-II band changed in SDS-PAGE, suggesting structural rearrangement in presence of cadmium. Structural analysis using fluorescent probes, indicated that at 5 µM CdCl2 the complete conformational change of PL-II protein was reached. In the same condition of mussels exposure of 5 µM CdCl2, PL-II protein changed its DNA binding mode, which determined a closer DNA binding, because higher amount of NaCl were required for PL-II protein release by sperm nuclei. These results supported the hypothesis that mussel exposure to this CdCl2 dose, although lower to toxic ones, affects the properties of this protein and as a consequence chromatin organization of spermatozoa that is essential for the success of fertilization.
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Affiliation(s)
- Virgilia De Guglielmo
- University of Naples Federico II, Dept. of Biology, via Cinthia, 80126 Naples, Italy
| | - Raffaela Puoti
- University of Naples Federico II, Dept. of Biology, via Cinthia, 80126 Naples, Italy
| | - Rosaria Notariale
- University of Naples Federico II, Dept. of Biology, via Cinthia, 80126 Naples, Italy
| | - Viviana Maresca
- University of Naples Federico II, Dept. of Biology, via Cinthia, 80126 Naples, Italy
| | - Juan Ausió
- University of Victoria, Dept. of Biochemistry & Microbiology, Victoria, British Columbia, Canada
| | - Jacopo Troisi
- Theoreo srl-spin-off dell'Universita` degli Studi di Salerno, 84090 Salerno, Italy
| | - Mariavittoria Verrillo
- University of Naples Federico II, Dept. of Agricultural Sciences, Via Università 100, 84055 Portici, Italy
| | - Adriana Basile
- University of Naples Federico II, Dept. of Biology, via Cinthia, 80126 Naples, Italy
| | - Ferdinando Febbraio
- CNR, Institute of Protein Biochemistry, via Pietro Castellino 111, 80131 Naples, Italy.
| | - Marina Piscopo
- University of Naples Federico II, Dept. of Biology, via Cinthia, 80126 Naples, Italy.
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Druart C, Gimbert F, Scheifler R, de Vaufleury A. A full life-cycle bioassay with Cantareus aspersus shows reproductive effects of a glyphosate-based herbicide suggesting potential endocrine disruption. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 226:240-249. [PMID: 28395863 DOI: 10.1016/j.envpol.2017.03.061] [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: 11/14/2016] [Revised: 03/14/2017] [Accepted: 03/25/2017] [Indexed: 06/07/2023]
Abstract
A full life-cycle (240 days) bioassay using the terrestrial snail, Cantareus aspersus, allowing exposure during embryogenesis and/or the growth and reproduction phases, was used to assess the effects of Bypass®, a glyphosate-based herbicide (GlyBH), on a range of endpoints, including parameters under endocrine control. As a positive control, a mixture (R-A) made of diquat (Reglone®) and nonylphenols (NP, Agral®), known for its endocrine disrupting effects in other organisms, was tested. At environmental concentrations, both pesticides (R-A mixture and GlyBH) enhanced growth but reduced reproduction. The R-A mixture acted mainly on the fecundity through a delay in egg-laying of approximately 20 days and a strongly reduced number of clutches. This latter dysfunction may be caused by a permanent eversion of the penis, suggesting a disrupting effect at the neuro-endocrine level, which prevented normal mating. GlyBH acted on fertility, possibly due to a decrease in the fertilization of eggs laid by adults exposed during their embryonic development. These results, associated with the absence of observed effects on gonad histology of GlyBH exposed snails, suggested that the underlying mechanisms are neuro-endocrine.
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Affiliation(s)
- Coline Druart
- Department of Chrono-Environment, University of Bourgogne Franche-Comté, UMR CNRS 6249 usc INRA, 16 route de Gray, F-25030 Besançon Cedex, France.
| | - Frédéric Gimbert
- Department of Chrono-Environment, University of Bourgogne Franche-Comté, UMR CNRS 6249 usc INRA, 16 route de Gray, F-25030 Besançon Cedex, France
| | - Renaud Scheifler
- Department of Chrono-Environment, University of Bourgogne Franche-Comté, UMR CNRS 6249 usc INRA, 16 route de Gray, F-25030 Besançon Cedex, France
| | - Annette de Vaufleury
- Department of Chrono-Environment, University of Bourgogne Franche-Comté, UMR CNRS 6249 usc INRA, 16 route de Gray, F-25030 Besançon Cedex, 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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Hultin CL, Hallgren P, Hansson MC. Estrogen receptor genes in gastropods: phylogenetic divergence and gene expression responses to a synthetic estrogen. Comp Biochem Physiol C Toxicol Pharmacol 2016; 189:17-21. [PMID: 27426037 DOI: 10.1016/j.cbpc.2016.07.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 06/02/2016] [Accepted: 07/12/2016] [Indexed: 11/21/2022]
Abstract
Endocrine disrupting chemicals (EDCs) have the potential to affect development and reproduction in gastropods. However, one is today lacking basic understanding of the Molluscan endocrine system and one can therefore not fully explain these EDC-induced affects. Furthermore, only a few genes that potentially may be connected to the endocrine system have been sequenced in gastropods. An example is the estrogen receptor gene (er) that have been identified in a restricted number of freshwater and marine gastropods. Here, we have identified a new partial coding sequence of an estrogen receptor gene (er) in the European common heterobranch Radix balthica. The following phylogenetic analysis divided the ers of heterobranchs and ceanogastropods in two branches. Furthermore, exposure to the synthetic estrogen 17α-ethinylestradiol (EE2) showed that exposure could significantly affect er expression level in the heterobranch R. balthica. This paper is the first that phylogenetically compares gastropods' er, basal er expression profiles, and transcriptional estrogenic responses in gastropods from two different evolutionary groups.
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Affiliation(s)
- Cecilia L Hultin
- Centre for Environmental and Climate Research (CEC), Lund University, Sölvegatan 37, SE-22362 Lund, Sweden.
| | - Per Hallgren
- Department of Biology, Lund University, Sölvegatan 37, SE-22362 Lund, Sweden
| | - Maria C Hansson
- Centre for Environmental and Climate Research (CEC), Lund University, Sölvegatan 37, SE-22362 Lund, Sweden
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Kanimozhi V, Palanivel K, Akbarsha MA, Kadalmani B. Tributyltin-mediated hepatic, renal and testicular tissue damage in male Syrian hamster (Mesocricetus auratus): a study on impact of oxidative stress. SPRINGERPLUS 2016; 5:1523. [PMID: 27652096 PMCID: PMC5017992 DOI: 10.1186/s40064-016-3186-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 08/31/2016] [Indexed: 12/11/2022]
Abstract
Organotin compounds are a versatile group of organometallic chemicals that are used in a variety of industrial and agricultural applications. Tributyltin (TBT), a common organotin, brings about severe spermatotoxic and organotoxic effects. However, information about the adverse effects of TBT on liver, kidney and testis is scanty. Hence, the present study was undertaken to elucidate the TBT-mediated oxidative stress-induced impairments in these organs. Administration of TBT through oral route at increasing doses of 50, 100 and 150 ppm for 65 days to male Syrian hamsters resulted in drastically decreased activities of antioxidant enzymes superoxide dismutase, catalase and glutathione peroxidase and decreased mean levels of non-enzymatic antioxidants (reduced glutathione, vitamin C, and vitamin E) followed by a dramatic increase in the levels of lipid peroxidation in the liver, kidney and testis as compared to the control animals. Significantly high levels of serum urea, creatinine, uric acid and bilirubin were observed in TBT-treated hamsters. Also, TBT treatment induced drastic histopathological changes in the liver, kidney and testis combined with remarkable changes in serum levels of tissue injury marker enzymes Aspartate transaminases, Alkaline phosphatase and Alanine transaminase. These data affirm that exposure to TBT can lead to oxidative stress-induced damage to liver, kidney and testis.
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Affiliation(s)
- V Kanimozhi
- Department of Animal Science, Bharathidasan University, Tiruchirappalli, 620 024 India
| | - K Palanivel
- Department of Animal Science, Bharathidasan University, Tiruchirappalli, 620 024 India
| | - M A Akbarsha
- Department of Animal Science, Bharathidasan University, Tiruchirappalli, 620 024 India ; Department of Food Science and Nutrition, College of Food and Agriculture, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - B Kadalmani
- Department of Animal Science, Bharathidasan University, Tiruchirappalli, 620 024 India
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Zhang Q, Wang F, Xue C, Wang C, Chi S, Zhang J. Comparative toxicity of nonylphenol, nonylphenol-4-ethoxylate and nonylphenol-10-ethoxylate to wheat seedlings (Triticum aestivum L.). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2016; 131:7-13. [PMID: 27162129 DOI: 10.1016/j.ecoenv.2016.04.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 04/26/2016] [Accepted: 04/26/2016] [Indexed: 06/05/2023]
Abstract
Nonylphenol polyethoxylates (NPEOs) are a group of surfactants that are widely used in industrial and household products and often detected in the environment. The metabolite of NPEOs, named nonylphenol (NP), has proven to be an endocrine disruptor, and its environmental behavior and eco-toxicity have been widely investigated in previous studies. However, to the best of our knowledge, insight into the toxicity differences of NP and NPEOs on important crops remains limited. Therefore, this study investigated the comparative toxicity of NP, nonylphenol-4-ethoxylate (NP4EO), and nonylphenol-10-ethoxylate (NP10EO) on wheat seedlings using hydroponic experiments. The results indicated that NP is most toxic to wheat followed by NP4EO, and NP10EO is the least toxic to wheat. The adverse effects of NP on wheat were observed for all the tested parameters including germination, shoot length, root length, chlorophyll, lipid peroxidation, and enzymatic activities. To gain insight into the molecular response, we analyzed the transcript abundance of SOD-Cu/Zn and CAT with NP, NP4EO, and NP10EO exposure using quantitative real-time PCR. The data revealed that both genes exhibited up- or down-regulated expression patterns that were consistent with the activities of the two enzymes. This result further conformed that NP is most toxic to wheat plants.
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Affiliation(s)
- Qingming Zhang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China.
| | - Feifei Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Changhui Xue
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Caixia Wang
- College of Agronomy and Plant Protection, Key Lab of Integrated Crop Pest Management of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China
| | - Shengqi Chi
- College of Agronomy and Plant Protection, Key Lab of Integrated Crop Pest Management of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China
| | - Jianfeng Zhang
- College of Agronomy and Plant Protection, Key Lab of Integrated Crop Pest Management of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China.
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Aquilino M, Sánchez-Argüello P, Martínez-Guitarte JL. Vinclozolin alters the expression of hormonal and stress genes in the midge Chironomus riparius. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2016; 174:179-187. [PMID: 26966872 DOI: 10.1016/j.aquatox.2016.03.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 03/01/2016] [Accepted: 03/02/2016] [Indexed: 06/05/2023]
Abstract
Vinclozolin is a fungicide used in agriculture that can reach aquatic ecosystems and affect the organisms living there. Its effects have been intensively studied in vertebrates, where it acts as an antiandrogen, but there is a lack of information about its mechanistic effects on invertebrates. In this work, we analyzed the response of genes related to the endocrine system, the stress response, and the detoxification mechanisms of Chironomus riparius fourth instar larvae after 24h and 48h exposures to 20 (69.9nM), 200 (699nM), and 2000μg/L (6.99μM) of Vinclozolin. Survival analysis showed that this compound has low toxicity, as it was not lethal for this organism at the concentrations used. However, this fungicide was shown to modify the transcriptional activity of the ecdysone response pathway genes EcR, E74, and Kr-h1 by increasing their mRNA levels. While no changes were observed in disembodied, a gene related with the ecdysone synthesis metabolic pathway, Cyp18A1, which is involved in the inactivation of the active form of ecdysone, was upregulated. Additionally, the expression of two genes related to other hormones, FOXO and MAPR, did not show any changes when Vinclozolin was present. The analysis of stress response genes showed significant changes in the mRNA levels of Hsp70, Hsp24, and Gp93, indicating that Vinclozolin activates the cellular stress mechanisms. Finally, the expressions of the genes Cyp4G and GstD3, which encode enzymes involved in phase I and phase II detoxification, respectively, were analyzed. It was found that their mRNA levels were altered by Vinclozolin, suggesting their involvement in the degradation of this compound. For the first time, these results show evidence that Vinclozolin can modulate gene expression, leading to possible significant endocrine alterations of the insect endocrine system. These results also offer new clues about the mode of action of this compound in invertebrates.
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Affiliation(s)
- Mónica Aquilino
- Grupo de Biología y Toxicología Ambiental, 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
| | - José-Luis Martínez-Guitarte
- Grupo de Biología y Toxicología Ambiental, Facultad de Ciencias, Universidad Nacional de Educación a Distancia, UNED, Senda del Rey 9, 28040 Madrid, Spain.
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Afifi R, Elnwishy N, Hannora A, Hedström M, Mattiasson B, Omran H, Alharbi OML, Ali I. SPE and HPLC monitoring of 17-β-estradiol in Egyptian aquatic ecosysetms. J LIQ CHROMATOGR R T 2016. [DOI: 10.1080/10826076.2016.1174712] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Raafat Afifi
- Department of Biology, Faculty of Science, Taibah University, Medina, Saudi Arabia
- Department of Marine Biology, Suez Canal University, Ismailia, Egypt
| | - Nagwa Elnwishy
- Zewail City for Science and Technology, Biomedical Science Program, 6th of October City, Egypt
- Biotechnology Researach Center (BRC), Suez Canal University, Ismailia, Egypt
| | - Amro Hannora
- Department of Microbiology, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt
| | - Martin Hedström
- Department of Biotechnology, Center of Chemistry & Chemical Engineering, Lund University, Lund, Sweden
| | - Bo Mattiasson
- Department of Biotechnology, Center of Chemistry & Chemical Engineering, Lund University, Lund, Sweden
| | - Helmy Omran
- Department of Food Technology, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt
| | - O. M. L. Alharbi
- Department of Biology, Faculty of Science, Taibah University, Medina, Saudi Arabia
| | - Imran Ali
- Department of Chemistry, Jamia Millia Islamia (Central University), New Delhi, India
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23
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Ahmady-Asbchin S. Response surface methodology for cadmium biosorption on Pseudomonas aeruginosa. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 73:2608-2615. [PMID: 27232396 DOI: 10.2166/wst.2016.061] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this research the effects of various physicochemical factors on Cd(2+) biosorption such as initial metal concentration, pH and contact exposure time were studied. This study has shown a Cd(2+) biosorption, equilibrium time of about 5 min for Pseudomonas aeruginosa and the adsorption equilibrium data were well described by Langmuir equation. The maximum capacity for biosorption has been extrapolated to 0.56 mmol.g(-1) for P. aeruginosa. The thermodynamic properties ΔG(0), ΔH(0), and ΔS(0) of Cd(2+) for biosorption were analyzed by the equilibrium constant value obtained from experimented data at different temperatures. The results show that biosorption of Cd(2+) by P. aeruginosa are endothermic and spontaneous with ΔH value of 36.35 J.mol(-1). By response surface methodology, the quadratic model has adequately described the experimental data based on the adjusted determination coefficient (R(2) = 0.98). The optimum conditions for maximum uptake onto the biosorbent were established at 0.5 g.l(-1) biosorbent concentration, pH 6 for the aqueous solution, and a temperature of 30 °C.
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Affiliation(s)
- Salman Ahmady-Asbchin
- Department of Molecular and Cell Biology, Faculty of Basic Science, University of Mazandaran, P.O. Box 47416-95447, Babolsar, Iran E-mail: ;
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Lepretti M, Paolella G, Giordano D, Marabotti A, Gay F, Capaldo A, Esposito C, Caputo I. 4-Nonylphenol reduces cell viability and induces apoptosis and ER-stress in a human epithelial intestinal cell line. Toxicol In Vitro 2015; 29:1436-44. [DOI: 10.1016/j.tiv.2015.04.022] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 04/24/2015] [Accepted: 04/27/2015] [Indexed: 11/25/2022]
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25
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Metabolic changes in marine medaka fish (Oryzias javanicus) in response to acute 4-nonlyphenol toxicity. BIOCHIP JOURNAL 2015. [DOI: 10.1007/s13206-015-9408-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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An LH, Zheng BH, Liu RZ, Fan Q, Wang QK, Luo YF. Transcriptomic response to estrogen exposure in the male Zhikong scallop, Chlamys farreri. MARINE POLLUTION BULLETIN 2014; 89:59-66. [PMID: 25455372 DOI: 10.1016/j.marpolbul.2014.10.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 10/10/2014] [Accepted: 10/16/2014] [Indexed: 06/04/2023]
Abstract
The transcriptomes of Zhikong scallop exposed to 17β-estradiol were determined using the Roche/454. A total of 51,997 unigenes, representing 45,030 contigs and 6967 singlets were obtained. And 14,028, 19,798 and 14,981 of these unigenes were annotated from the non-redundant nucleic acid database, non-redundant protein database and Swiss protein database, respectively. A total of 10,699 unigenes were further annotated to biological processes (9080), molecular functions (8692) and cellular components (7829) using the GO, and 8945 unigenes were mapped to biological pathways including the metabolism (2862) and genetic information processing (2263). Most importantly, 16,692 unigenes and 18,686 unigenes in testis, and 10,492 unigenes and 13,186 unigenes in digestive gland were up-regulated significantly after exposure to 50 and 500 ng E2/L; while 10,212 unigenes and 9409 unigenes in testis and 10,629 unigenes and 9463 unigenes in digestive gland were down-regulated. These valuable information provides insights into the mechanisms in invertebrate exposure to EDCs.
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Affiliation(s)
- Li-Hui An
- State Environmental Protection Key Laboratory of Estuarine and Coastal Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Bing-Hui Zheng
- State Environmental Protection Key Laboratory of Estuarine and Coastal Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| | - Rui-Zhi Liu
- State Environmental Protection Key Laboratory of Estuarine and Coastal Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Qiang Fan
- State Environmental Protection Key Laboratory of Estuarine and Coastal Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Tianjin Agricultural College, Tianjin 300384, China
| | | | - Ying-Feng Luo
- Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing 100029, China
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27
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Development and validation of an OECD reproductive toxicity test guideline with the pond snail Lymnaea stagnalis (Mollusca, Gastropoda). Regul Toxicol Pharmacol 2014; 70:605-14. [DOI: 10.1016/j.yrtph.2014.09.004] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 09/05/2014] [Accepted: 09/07/2014] [Indexed: 11/22/2022]
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28
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Giusti A, Lagadic L, Barsi A, Thomé JP, Joaquim-Justo C, Ducrot V. Investigating apical adverse effects of four endocrine active substances in the freshwater gastropod Lymnaea stagnalis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 493:147-55. [PMID: 24950493 DOI: 10.1016/j.scitotenv.2014.05.130] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 05/09/2014] [Accepted: 05/28/2014] [Indexed: 05/14/2023]
Abstract
The hermaphroditic gastropod Lymnaea stagnalis is proposed as a candidate species for the development of OECD guidelines for testing of the reprotoxicity of chemicals, including endocrine active substances (EASs). Up to now, only a few putative EASs have been tested for their reproductive toxicity in this species. In this study, we investigate the effects of four EASs with different affinities to the vertebrate estrogen and androgen receptors (chlordecone as an estrogen; cyproterone acetate, fenitrothion and vinclozolin as anti-androgens) on the reproduction of L. stagnalis in a 21-day semi-static test. Testosterone and 17α-ethinylestradiol (EE2) were used as the reference compounds. The tested EASs had no significant effect on growth and survival at the tested concentration ranges (ng to μg/L). Classical reproduction endpoints (i.e., oviposition and fecundity) were not responsive to the tested chemicals, except for chlordecone and 17α-ethinylestradiol, which hampered reproduction from 19.6 μg/L and 17.6 μg/L, respectively. The frequency of polyembryonic eggs, used as an additional endpoint, demonstrated the effects of all compounds except EE2. The molecular pathways, which are involved in such reproduction impairments, remain unknown. Our results suggest that egg quality is a more sensitive endpoint as compared to other reproductive endpoints commonly assessed in mollusk toxicity tests.
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Affiliation(s)
- Arnaud Giusti
- Laboratory of Animal Ecology and Ecotoxicology, Centre of Analytical Research and Technology (CART), Liege University, 15 Allée du 6 août, 4000 Liège, Belgium; INRA, UMR0985 Ecologie et Santé des Ecosystèmes, Equipe Ecotoxicologie et Qualité des Milieux Aquatiques, 65 rue de Saint-Brieuc, CS 84215, F-35042 Rennes Cedex, France.
| | - Laurent Lagadic
- INRA, UMR0985 Ecologie et Santé des Ecosystèmes, Equipe Ecotoxicologie et Qualité des Milieux Aquatiques, 65 rue de Saint-Brieuc, CS 84215, F-35042 Rennes Cedex, France.
| | - Alpar Barsi
- INRA, UMR0985 Ecologie et Santé des Ecosystèmes, Equipe Ecotoxicologie et Qualité des Milieux Aquatiques, 65 rue de Saint-Brieuc, CS 84215, F-35042 Rennes Cedex, France.
| | - Jean-Pierre Thomé
- Laboratory of Animal Ecology and Ecotoxicology, Centre of Analytical Research and Technology (CART), Liege University, 15 Allée du 6 août, 4000 Liège, Belgium.
| | - Célia Joaquim-Justo
- Laboratory of Animal Ecology and Ecotoxicology, Centre of Analytical Research and Technology (CART), Liege University, 15 Allée du 6 août, 4000 Liège, Belgium.
| | - Virginie Ducrot
- INRA, UMR0985 Ecologie et Santé des Ecosystèmes, Equipe Ecotoxicologie et Qualité des Milieux Aquatiques, 65 rue de Saint-Brieuc, CS 84215, F-35042 Rennes Cedex, France.
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29
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De Castro-Català N, López-Doval J, Gorga M, Petrovic M, Muñoz I. Is reproduction of the snail Physella acuta affected by endocrine disrupting compounds? An in situ bioassay in three Iberian basins. JOURNAL OF HAZARDOUS MATERIALS 2013; 263 Pt 1:248-255. [PMID: 23972665 DOI: 10.1016/j.jhazmat.2013.07.053] [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: 05/09/2013] [Revised: 07/24/2013] [Accepted: 07/25/2013] [Indexed: 06/02/2023]
Abstract
An in situ bioassay was conducted in three Iberian basins (Ebro, Llobregat and Júcar Rivers) to study the reproductive effects on the freshwater snail Physella acuta. Adult individuals were transplanted in specially designed cylindrical cages. Endpoints included mortality, number of eggs and clutches, number of eggs per clutch and embryo development after 8 days. The results were contrasted with laboratory controls. Significant changes in P. acuta reproduction parameters were detected in all of the rivers: the number of clutches or eggs per snail decreased in the Ebro and Llobregat basins downstream but the number of eggs per clutch increased. The complete development of snails was delayed at some sites downstream in the Júcar and the Ebro basins. The results were contrasted with concentrations of Endocrine Disrupting Compounds (EDCs) and their Estrogenic Equivalent Quotients (EEQs). Positive relationships (Pearson correlations) were identified between the number of eggs per clutch and the total EDC concentration, bisphenol A (BPA) and their EEQs, lipid regulators and diuretics. These endocrine-disrupting chemicals may constitute a toxicological risk for the reproductive performance of snails in the studied basins.
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Affiliation(s)
- N De Castro-Català
- Department of Ecology, University of Barcelona, Av. Diagonal, 643, 08028 Barcelona, Spain.
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30
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Luna TO, Plautz SC, Salice CJ. Effects of 17α-ethynylestradiol, fluoxetine, and the mixture on life history traits and population growth rates in a freshwater gastropod. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2013; 32:2771-2778. [PMID: 23983099 DOI: 10.1002/etc.2372] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 05/17/2013] [Accepted: 08/15/2013] [Indexed: 06/02/2023]
Abstract
Pharmaceutical and personal care products (PPCPs), some of which have endocrine-disrupting effects at environmentally relevant concentrations, have been detected in many surface waters. The authors evaluated the effects of 2 common endocrine disrupting PPCPs on the life history traits of the snail, Physa pomilia, using a life table response experiment with snails raised in environmentally relevant concentrations of 17α-ethynylestradiol (EE2), fluoxetine, or their mixture. Exposure to fluoxetine or the mixture reduced snail reproduction, but EE2 did not. Generally, individual life history traits were affected minimally by the PPCPs, but when integrated using a demographic model, all 3 chemical exposure scenarios decreased population growth rates, with the EE2 and fluoxetine mixture causing the most adverse effects. Overall, the results provide additional insight into the effects of PPCPs on freshwater invertebrates and point to the importance of testing simultaneous exposures to multiple PPCPs. In addition, using a demographic model to integrate individual endpoints provided insights into effects that were not apparent from individual life history traits alone and suggest at least a potential for adverse ecological effects under realistic environmental exposures concentrations.
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Affiliation(s)
- Tamara O Luna
- Department of Environmental Toxicology, The Institute of Environmental and Human Health, Texas Tech University, Lubbock, Texas, USA
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31
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Vilela J, Hartmann A, Silva EF, Cardoso T, Corcini CD, Varela-Junior AS, Martinez PE, Colares EP. Sperm impairments in adult vesper mice (Calomys laucha) caused byin uteroexposure to bisphenol A. Andrologia 2013; 46:971-8. [DOI: 10.1111/and.12182] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/09/2013] [Indexed: 11/27/2022] Open
Affiliation(s)
- J. Vilela
- Instituto de Ciências Biológicas; Universidade Federal do Rio Grande (FURG); Rio Grande RS Brazil
| | - A. Hartmann
- Instituto de Ciências Biológicas; Universidade Federal do Rio Grande (FURG); Rio Grande RS Brazil
| | - E. F. Silva
- ReproPel; Faculdade de Veterinária; Campus Capão do Leão; Universidade Federal de Pelotas (UFPel); Pelotas RS Brazil
| | - T. Cardoso
- Instituto de Ciências Biológicas; Universidade Federal do Rio Grande (FURG); Rio Grande RS Brazil
| | - C. D. Corcini
- Instituto de Ciências Biológicas; Universidade Federal do Rio Grande (FURG); Rio Grande RS Brazil
- ReproPel; Faculdade de Veterinária; Campus Capão do Leão; Universidade Federal de Pelotas (UFPel); Pelotas RS Brazil
| | - A. S. Varela-Junior
- Instituto de Ciências Biológicas; Universidade Federal do Rio Grande (FURG); Rio Grande RS Brazil
| | - P. E. Martinez
- Instituto de Ciências Biológicas; Universidade Federal do Rio Grande (FURG); Rio Grande RS Brazil
| | - E. P. Colares
- Instituto de Ciências Biológicas; Universidade Federal do Rio Grande (FURG); Rio Grande RS Brazil
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32
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Lecomte V, Noury P, Tutundjian R, Buronfosse T, Garric J, Gust M. Organic solvents impair life-traits and biomarkers in the New Zealand mudsnail Potamopyrgus antipodarum (Gray) at concentrations below OECD recommendations. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2013; 140-141:196-203. [PMID: 23811024 DOI: 10.1016/j.aquatox.2013.06.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 06/01/2013] [Accepted: 06/07/2013] [Indexed: 06/02/2023]
Abstract
Potamopyrgus antipodarum is a gastropod mollusk proposed for use in the development of reproduction tests within the Organization for Economic Cooperation and Development (OECD). Numerous chemicals, including endocrine disrupters, are relatively water-insoluble, and water-miscible solvents are currently used for testing them. OECD recommends a maximum concentration of 100 μll(-1). As several studies highlighted effects of lower concentrations of solvents, this study assessed the effects of 20 μll(-1) acetone, ethanol, methanol and dimethylsulfoxide (DMSO) on juvenile and adult snails during 42 days. Ethanol decreased juvenile growth, while acetone increased the rate of embryonic development. All solvents increased estradiol-like levels in adult snails. DMSO only increased mRNA expression of vitellogenin-like gene, while acetone, ethanol and methanol decreased mRNA expression of three nuclear receptor (estrogen receptor-like, ecdysone-induced protein and chicken ovalbumin upstream promoter transcription factor) genes as well as of genes encoding proteins involved in genomic (prohibitin-2) and non-genomic (striatin) pathways of estrogens activity in vertebrates. This study highlights the confounding effects of low concentrations of solvents and recommends avoiding their use. Where solvent use is inevitable, their concentrations and type should be investigated for suitability for the measured endpoints prior to use in chemical testing strategies.
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Affiliation(s)
- V Lecomte
- Irstea, UR MAEP, Laboratoire d'écotoxicologie, 5 rue de la Doua, CS70077, 69626 Villeurbanne Cedex, France
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33
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Giusti A, Barsi A, Dugué M, Collinet M, Thomé JP, Joaquim-Justo C, Roig B, Lagadic L, Ducrot V. Reproductive impacts of tributyltin (TBT) and triphenyltin (TPT) in the hermaphroditic freshwater gastropod Lymnaea stagnalis. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2013; 32:1552-1560. [PMID: 23450754 DOI: 10.1002/etc.2200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 12/18/2012] [Accepted: 02/11/2013] [Indexed: 06/01/2023]
Abstract
Tributyltin (TBT) and triphenyltin (TPT) are emblematic endocrine disruptors, which have been mostly studied in gonochoric prosobranchs. Although both compounds can simultaneously occur in the environment, they have mainly been tested separately for their effects on snail reproduction. Because large discrepancies in experimental conditions occurred in these tests, the present study aimed to compare the relative toxicity of TBT and TPT under similar laboratory conditions in the range of 0 ng Sn/L to 600 ng Sn/L. Tests were performed on the simultaneous hermaphrodite Lymnaea stagnalis, a freshwater snail in which effects of TPT were unknown. Survival, shell length, and reproduction were monitored in a 21-d semistatic test. Frequency of abnormal eggs was assessed as an additional endpoint. Triphenyltin hampered survival while TBT did not. Major effects on shell solidity and reproduction were observed for both compounds, reproductive outputs being more severely hampered by TBT than by TPT. Considering the frequency of abnormal eggs allowed increasing test sensitivity, because snail responses to TBT could be detected at concentrations as low as 19 ng Sn/L. However, the putative mode of action of the 2 compounds could not be deduced from the structure of the molecules or from the response of apical endpoints. Sensitivity of L. stagnalis to TBT and TPT was compared with the sensitivity of prosobranch mollusks with different habitats and different reproductive strategies.
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Affiliation(s)
- Arnaud Giusti
- Laboratory of Animal Ecology and Ecotoxicology, Center of Analytical Research and Technology, Liège University, Liège, Belgium
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34
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Scott AP. Do mollusks use vertebrate sex steroids as reproductive hormones? II. Critical review of the evidence that steroids have biological effects. Steroids 2013; 78:268-81. [PMID: 23219696 DOI: 10.1016/j.steroids.2012.11.006] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Revised: 10/22/2012] [Accepted: 11/02/2012] [Indexed: 01/02/2023]
Abstract
In assessing the evidence as to whether vertebrate sex steroids (e.g. testosterone, estradiol, progesterone) have hormonal actions in mollusks, ca. 85% of research papers report at least one biological effect; and 18 out of 21 review papers (published between 1970 and 2012) express a positive view. However, just under half of the research studies can be rejected on the grounds that they did not actually test steroids, but compounds or mixtures that were only presumed to behave as steroids (or modulators of steroids) on the basis of their effects in vertebrates (e.g. Bisphenol-A, nonylphenol and sewage treatment effluents). Of the remaining 55 papers, some can be criticized for having no statistical analysis; some for using only a single dose of steroid; others for having irregular dose-response curves; 40 out of the 55 for not replicating the treatments; and 50 out of 55 for having no within-study repetition. Furthermore, most studies had very low effect sizes in comparison to fish-based bioassays for steroids (i.e. they had a very weak 'signal-to-noise' ratio). When these facts are combined with the fact that none of the studies were conducted with rigorous randomization or 'blinding' procedures (implying the possibility of 'operator bias') one must conclude that there is no indisputable bioassay evidence that vertebrate sex steroids have endocrinological or reproductive roles in mollusks. The only observation that has been independently validated is the ability of estradiol to trigger rapid (1-5 min) lysosomal membrane breakdown in hemocytes of Mytilus spp. This is a typical 'inflammatory' response, however, and is not proof that estradiol is a hormone - especially when taken in conjunction with the evidence (discussed in a previous review) that mollusks have neither the enzymes necessary to synthesize vertebrate steroids nor nuclear receptors with which to respond to them.
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Affiliation(s)
- Alexander P Scott
- Centre for Environment, Fisheries and Aquaculture Science, Weymouth, Dorset, UK.
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35
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Sánchez-Argüello P, Aparicio N, Fernández C. Linking embryo toxicity with genotoxic responses in the freshwater snail Physa acuta: single exposure to benzo(a)pyrene, fluoxetine, bisphenol A, vinclozolin and exposure to binary mixtures with benzo(a)pyrene. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2012; 80:152-160. [PMID: 22417675 DOI: 10.1016/j.ecoenv.2012.02.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2011] [Revised: 02/20/2012] [Accepted: 02/23/2012] [Indexed: 05/31/2023]
Abstract
Genotoxic effects on fauna after waterborne pollutant exposure have been demonstrated by numerous research programmes. Less effort has been focused on establishing relationship between genotoxicity and long-term responses at higher levels of biological organization. Taking into account that embryos may be more sensitive indicators of reproductive impairment than alterations in fertility, we have developed two assays in multiwell plates to address correlations between embryo toxicity and genotoxicity. The potential teratogenicity was assessed by analyzing abnormal development and mortality of Physa acuta at embryonic stage. Genotoxicity was measured by the micronucleus (MN) test using embryonic cells. Our results showed that linkage between genotoxicity and embryo toxicity depends on mechanisms of action of compounds under study. Embryo toxic responses showed a clear dose-related tendency whereas no clear dose-dependent effect was observed in micronucleus induction. The higher embryo toxicity was produced by benzo(a)pyrene exposure followed by fluoxetine and bisphenol A. Vinclozolin was the lower embryo toxic compound. Binary mixtures with BaP always resulted in higher embryo toxicity than single exposures but antagonistic effects were observed for MN induction. Benzo(a)pyrene produced the higher MN induction at 0.04 mg/L, which also produced clear embryo toxic effects. Fluoxetine did not induce cytogenetic effects but 0.25mg/L altered embryonic development. Bisphenol A significantly reduced hatchability at 0.5mg/L while MN induction appeared with higher treatments than those that start causing teratogenicity. Much higher concentration of vinclozolin (5mg/L) reduced hatchability and induced maximum MN formation. In conclusion, while validating one biomarker of genotoxicity and employing one ecologically relevant effect, we have evaluated the relative sensitivity of a freshwater mollusc for a range of chemicals. The embryo toxicity test is a starting point for the development of a life cycle test with freshwater snails even for undertaking multigeneration studies focused on transgenerational effects.
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Affiliation(s)
- Paloma Sánchez-Argüello
- Laboratory for Ecotoxicology, Department of the Environment, INIA, Crta, A Coruña km 7, 28040 Madrid, Spain.
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36
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Hallgren P, Sorita Z, Berglund O, Persson A. Effects of 17α-ethinylestradiol on individual life-history parameters and estimated population growth rates of the freshwater gastropods Radix balthica and Bithynia tentaculata. ECOTOXICOLOGY (LONDON, ENGLAND) 2012; 21:803-810. [PMID: 22197991 DOI: 10.1007/s10646-011-0841-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/07/2011] [Indexed: 05/31/2023]
Abstract
Studies of aquatic environments exposed to 17α-ethinylestradiol (EE2) have demonstrated detrimental effects on fish communities. However, much less is known about effects on macro-invertebrates and especially how long-term exposure may affect critical life stages and ultimately population dynamics. We studied the effects of EE2 on relevant endpoints for population growth in two common freshwater gastropods, Radix balthica and Bithynia tentaculata, that differ in reproductive, foraging and anti-predator strategies and endocrine systems. We quantified critical life-history parameters (mortality, somatic growth rate, days to and size at first reproduction, egg production and hatching success) in a concentration-response, life cycle experiment. The two species responded to EE2 exposure in different ways, B. tentaculata showing a significantly lower somatic growth rate and R. balthica a higher somatic growth rate. However, the magnitudes of the effects were small and EE2 exposure did not have any significant effect on estimated population growth rates for the two snail species. The significant effects of EE2 on individual endpoints, but not on population growth rate for both species, emphasise the importance of evaluating higher level effects from long-term exposure studies.
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Affiliation(s)
- Per Hallgren
- Department of Biology, Aquatic Ecology, Ecology Building, University of Lund, 223 62 Lund, Sweden.
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37
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López-Doval JC, Kukkonen JVK, Rodrigo P, Muñoz I. Effects of indomethacin and propranolol on Chironomus riparius and Physella (Costatella) acuta. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2012; 78:110-115. [PMID: 22153307 DOI: 10.1016/j.ecoenv.2011.11.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Revised: 11/06/2011] [Accepted: 11/15/2011] [Indexed: 05/31/2023]
Abstract
New analytical methods are available for detecting novel xenobiotic compounds in freshwater systems. Pharmaceuticals are suspected of having effects on freshwater biota at very low concentrations, although the nature of these effects remains unclear. Previous data from the Llobregat River revealed a positive statistical relationship between the biomass of benthic macroinvertebrates and the presence of certain non-steroidal anti-inflammatory drugs (NSAIDs) and beta-blockers. Here, experiments were conducted with the midge Chironomus riparius and the freshwater snail Physella (Costatella) acuta in sediments and water, respectively. The sediments and water were treated with the pharmaceuticals propranolol and indomethacin, with the aims of assaying the effects of these compounds on the organisms and testing the statistical relationships observed in field. The variables measured were survival; C. riparius biomass; and the carbon/nitrogen ratio, lipid content and fertility of freshwater snails. Indomethacin in treated sediments induced an increase in C. riparius biomass, whereas propranolol inhibited growth, albeit at marginal statistical significance. By contrast, indomethacin in water had no effect on any of the parameters measured in P. acuta.
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Affiliation(s)
- J C López-Doval
- Department of Ecology, University of Barcelona, Av. Diagonal, 645, 08028 Barcelona, Spain.
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Brix KV, Esbaugh AJ, Munley KM, Grosell M. Investigations into the mechanism of lead toxicity to the freshwater pulmonate snail, Lymnaea stagnalis. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2012; 106-107:147-156. [PMID: 22172541 DOI: 10.1016/j.aquatox.2011.11.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Revised: 11/11/2011] [Accepted: 11/15/2011] [Indexed: 05/31/2023]
Abstract
The freshwater pulmonate snail, Lymnaea stagnalis, is the most sensitive aquatic organism tested to date for Pb with an estimated EC20 for juvenile snail growth of 3 μg l⁻¹. A previous study supported the hypothesis that this hypersensitivity to Pb was due to an extremely high Ca²⁺ uptake rate needed to support shell formation. The current study sought to build upon this working hypothesis and develop a mechanistic predictive model for inhibition of snail growth as a function of Pb exposure. Initial experiments confirmed previous predictions that juvenile snails have net Ca²⁺ uptake rates of 7000-8000 nmol g⁻¹ h⁻¹, approximately 100-fold higher than observed in a typical freshwater fish. However, an initial time course study revealed that the onset of growth inhibition occurs at least 4d prior to inhibition of net Ca²⁺ flux in Pb-exposed snails indicating the latter is not the primary mechanism of action. Qualitative observations during this experiment indicated snail feeding was inhibited in a dose-dependent manner. A subsequent experiment demonstrated that when food is withheld from snails for even 24 h, net Ca²⁺ uptake is significantly (∼50%) reduced. A second time course study demonstrated quantitatively that snail feeding is inhibited by Pb exposure by up to 98% at relatively high Pb concentrations (57 μg l⁻¹) but no inhibition was observed at ≤ 10 μg l⁻¹ Pb indicating feeding inhibition is not causing observed growth effects at concentrations approximating the EC20 of 3 μg l⁻¹ Pb. A final experiment testing whether Pb-induced growth effects are related to inhibition of carbonic anhydrase activity in the snail mantle also failed to demonstrate an effect. We conclude that while both feeding and net Ca²⁺ uptake in snails are affected by Pb exposure, they appear to be secondary effects. The primary mechanism of action explaining L. stagnalis hypersensitivity to Pb remains to be identified.
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Affiliation(s)
- Kevin V Brix
- RSMAS, Marine Biology and Fisheries, University of Miami, Miami, FL 33149, USA.
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Guasch H, Bonet B, Bonnineau C, Corcoll N, López-Doval JC, Muñoz I, Ricart M, Serra A, Clements W. How to Link Field Observations with Causality? Field and Experimental Approaches Linking Chemical Pollution with Ecological Alterations. THE HANDBOOK OF ENVIRONMENTAL CHEMISTRY 2012. [DOI: 10.1007/978-3-642-25722-3_7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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40
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Chen HG, Jia XP, Cai WG, Lin Q, Ma SW. Antioxidant responses and bioaccumulation in green-lipped mussels (Perna viridis) under acute tributyltin chloride exposure. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2011; 87:506-511. [PMID: 21874403 DOI: 10.1007/s00128-011-0390-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2011] [Accepted: 08/17/2011] [Indexed: 05/31/2023]
Abstract
Green-lipped mussels (Perna viridis) were exposed to waterborne tributyltin chloride (TBTCl) at different concentrations (0.2, 0.4 and 0.8 μg L(-1)) for up to 72 h. Accumulated TBTCl in Perna viridis correlated linearly with the exposure concentrations of 0.2 μg L(-1)(R(2) = 0.772), 0.4 μg L(-1)(R(2) = 0.952), and 0.8 μg L(-1)(R(2) = 0.909). The results of superoxide dismutase (SOD), glutathione peroxidase (GPx) and malondialdehyde (MDA) all decreased in gill tissues after 24 h of exposure, but the hepatic SOD and the hepatic GPx showed either little or no effect on exposure of TBTCl solutions. Analysis using the Spearman rank correlation coefficient showed the hepatic GPx activity appeared to have a significant negative correlativity (R(s) = -0.42) with the exposed TBTCl concentrations, and the hepatic MDA was significantly negatively correlated (R(s) = -0.33) with the tissue TBTCl concentrations. Conversely, a significant positive correlation (R(s) = 0.60) was shown between the gill MDA contents and exposure time. This study illustrates oxyradical scavenger GPx best correlated with stress level of pollutants among the various antioxidant parameters.
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Affiliation(s)
- Hai-Gang Chen
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, No. 231 Xingangxi Road, 510300 Guangzhou, Guangdong, People's Republic of China
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Antizar-Ladislao B, Sarkar SK, Anderson P, Peshkur T, Bhattacharya BD, Chatterjee M, Satpathy KK. Baseline of butyltin contamination in sediments of Sundarban mangrove wetland and adjacent coastal regions, India. ECOTOXICOLOGY (LONDON, ENGLAND) 2011; 20:1975-1983. [PMID: 21769589 DOI: 10.1007/s10646-011-0739-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/02/2011] [Indexed: 05/31/2023]
Abstract
The study reports the first assessment for the quantification and speciation of butyltins (BTs) in surface marine sediment samples (0-5 cm) from intertidal mudflats of Sundarban mangrove wetland along with the Hugli (Ganges) river basin, eastern coastal part of India. Concentrations of tributyltin (TBT), dibutyltin (DBT) and monobutyltin (MBT) were monitored at 16 stations and present at all study areas, in concentrations in sediments up to 84.2, 26.4 and 48.0 ng g(-1) of TBT, DBT and MBT, respectively. Significant correlations were obtained between MBT and DBT (r = 0.62, p = 0.01) and DBT and TBT (r = 0.54, p = 0.03). Calculated BT degradation index (BDI) values indicated recent contamination of BTs at 8 stations, and suggested either no degradation of TBT or very recent degradation at a 4 further stations. Additionally, BDI values also indicated no recent inputs of BTs in 4 stations (only MBT present in one of these stations). High concentrations of BTs, particularly TBT, have the potential to induce ecotoxicological impacts based on levels specified in Australian Sediment Quality Guidelines (SQGs). This study indicated that the majority of the analyzed stations were in the highest range of priority, due to high TBT concentrations.
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Affiliation(s)
- Blanca Antizar-Ladislao
- Institute for Infrastructure and Environment, School of Engineering, University of Edinburgh, William Rankine Building, Edinburgh, EH9 3JL, UK.
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Waye A, Trudeau VL. Neuroendocrine disruption: more than hormones are upset. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2011; 14:270-91. [PMID: 21790312 PMCID: PMC3173749 DOI: 10.1080/10937404.2011.578273] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Only a small proportion of the published research on endocrine-disrupting chemicals (EDC) directly examined effects on neuroendocrine processes. There is an expanding body of evidence that anthropogenic chemicals exert effects on neuroendocrine systems and that these changes might impact peripheral organ systems and physiological processes. Neuroendocrine disruption extends the concept of endocrine disruption to include the full breadth of integrative physiology (i.e., more than hormones are upset). Pollutants may also disrupt numerous other neurochemical pathways to affect an animal's capacity to reproduce, develop and grow, or deal with stress and other challenges. Several examples are presented in this review, from both vertebrates and invertebrates, illustrating that diverse environmental pollutants including pharmaceuticals, organochlorine pesticides, and industrial contaminants have the potential to disrupt neuroendocrine control mechanisms. While most investigations on EDC are carried out with vertebrate models, an attempt is also made to highlight the importance of research on invertebrate neuroendocrine disruption. The neurophysiology of many invertebrates is well described and many of their neurotransmitters are similar or identical to those in vertebrates; therefore, lessons learned from one group of organisms may help us understand potential adverse effects in others. This review argues for the adoption of systems biology and integrative physiology to address the effects of EDC. Effects of pulp and paper mill effluents on fish reproduction are a good example of where relatively narrow hypothesis testing strategies (e.g., whether or not pollutants are sex steroid mimics) have only partially solved a major problem in environmental biology. It is clear that a global, integrative physiological approach, including improved understanding of neuroendocrine control mechanisms, is warranted to fully understand the impacts of pulp and paper mill effluents. Neuroendocrine disruptors are defined as pollutants in the environment that are capable of acting as agonists/antagonists or modulators of the synthesis and/or metabolism of neuropeptides, neurotransmitters, or neurohormones, which subsequently alter diverse physiological, behavioral, or hormonal processes to affect an animal's capacity to reproduce, develop and grow, or deal with stress and other challenges. By adopting a definition of neuroendocrine disruption that encompasses both direct physiological targets and their indirect downstream effects, from the level of the individual to the ecosystem, a more comprehensive picture of the consequences of environmentally relevant EDC exposure may emerge.
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Affiliation(s)
- Andrew Waye
- Centre for Advanced Research in Environmental Genomics, Department of Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Vance L. Trudeau
- Centre for Advanced Research in Environmental Genomics, Department of Biology, University of Ottawa, Ottawa, Ontario, Canada
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Zhou J, Zhu XS, Cai ZH. Tributyltin toxicity in abalone (Haliotis diversicolor supertexta) assessed by antioxidant enzyme activity, metabolic response, and histopathology. JOURNAL OF HAZARDOUS MATERIALS 2010; 183:428-433. [PMID: 20709453 DOI: 10.1016/j.jhazmat.2010.07.042] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2009] [Revised: 07/09/2010] [Accepted: 07/09/2010] [Indexed: 05/29/2023]
Abstract
A toxicity test was performed to investigate the possible harmful effects of tributyltin (TBT) on abalone (Haliotis diversicolor supertexta). Animals were exposed to TBT in a range of environmentally relevant concentrations (2, 10 and 50 ng/L) for 30 days under laboratory conditions. TBT-free conditions were used as control treatments. The activity of antioxidant enzymes superoxide dismutase (SOD) and peroxidase (POD), and malondialdehyde (MDA), along with levels of haemolymph metabolites, and hepatopancreas histopathology were analyzed. The results showed that TBT decreased SOD activity, and increased POD level and MDA production in a dose-dependent way, indicating that oxidative injury was induced by TBT. Haemolymph metabolite measurements showed that TBT increased alanine and glutamate levels, and decreased glucose content, which suggested perturbation of energy metabolism. Elevated levels of acetate and pyruvate in the haemolymph indicated partial alteration of lipid metabolism. A decrease in lactate and an increase in succinate, an intermediate of the tricarboxylic acid (TCA) cycle, indicated disturbance of amino acid metabolism. Hepatopancreas tissues also exhibited inflammatory responses characterized by histopathological changes such as cell swelling, granular degeneration, and inflammation. Taken together, these results demonstrated that TBT was a potential toxin with a variety of deleterious effects on abalone.
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Affiliation(s)
- Jin Zhou
- Department of Biological Science and Biotechnology, Tsinghua University, Beijing, PR China
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Koene JM. Neuro-endocrine control of reproduction in hermaphroditic freshwater snails: mechanisms and evolution. Front Behav Neurosci 2010; 4:167. [PMID: 21088700 PMCID: PMC2981420 DOI: 10.3389/fnbeh.2010.00167] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2010] [Accepted: 09/19/2010] [Indexed: 11/13/2022] Open
Abstract
Invertebrates are used extensively as model species to investigate neuro-endocrine processes regulating behaviors, and many of these processes may be extrapolated to vertebrates. However, when it comes to reproductive processes, many of these model species differ notably in their mode of reproduction. A point in case are simultaneously hermaphroditic molluscs. In this review I aim to achieve two things. On the one hand, I provide a comprehensive overview of the neuro-endocrine control of male and female reproductive processes in freshwater snails. Even though the focus will necessarily be on Lymnaea stagnalis, since this is the best-studied species in this respect, extensions to other species are made wherever possible. On the other hand, I will place these findings in the actual context of the whole animal, after all these are simultaneous hermaphrodites. By considering the hermaphroditic situation, I uncover a numbers of possible links between the regulation of the two reproductive systems that are present within this animal, and suggest a few possible mechanisms via which this animal can effectively switch between the two sexual roles in the flexible way that it does. Evidently, this opens up a number of new research questions and areas that explicitly integrate knowledge about behavioral decisions (e.g., mating, insemination, egg laying) and sexual selection processes (e.g., mate choice, sperm allocation) with the actual underlying neuronal and endocrine mechanisms required for these processes to act and function effectively.
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Affiliation(s)
- Joris M Koene
- Animal Ecology, Faculty of Earth and Life Sciences, VU University Amsterdam, Netherlands
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Ducrot V, Teixeira-Alves M, Lopes C, Delignette-Muller ML, Charles S, Lagadic L. Development of partial life-cycle experiments to assess the effects of endocrine disruptors on the freshwater gastropod Lymnaea stagnalis: a case-study with vinclozolin. ECOTOXICOLOGY (LONDON, ENGLAND) 2010; 19:1312-21. [PMID: 20623335 DOI: 10.1007/s10646-010-0518-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/29/2010] [Indexed: 05/14/2023]
Abstract
Long-term effects of endocrine disruptors (EDs) on aquatic invertebrates remain difficult to assess, mainly due to the lack of appropriate sensitive toxicity test methods and relevant data analysis procedures. This study aimed at identifying windows of sensitivity to EDs along the life-cycle of the freshwater snail Lymnaea stagnalis, a candidate species for the development of forthcoming test guidelines. Juveniles, sub-adults, young adults and adults were exposed for 21 days to the fungicide vinclozolin (VZ). Survival, growth, onset of reproduction, fertility and fecundity were monitored weekly. Data were analyzed using standard statistical analysis procedures and mixed-effect models. No deleterious effect on survival and growth occurred in snails exposed to VZ at environmentally relevant concentrations. A significant impairment of the male function occurred in young adults, leading to infertility at concentrations exceeding 0.025 μg/L. Furthermore, fecundity was impaired in adults exposed to concentrations exceeding 25 μg/L. Biological responses depended on VZ concentration, exposure duration and on their interaction, leading to complex response patterns. The use of a standard statistical approach to analyze those data led to underestimation of VZ effects on reproduction, whereas effects could reliably be analyzed by mixed-effect models. L. stagnalis may be among the most sensitive invertebrate species to VZ, a 21-day reproduction test allowing the detection of deleterious effects at environmentally relevant concentrations of the fungicide. These results thus reinforce the relevance of L. stagnalis as a good candidate species for the development of guidelines devoted to the risk assessment of EDs.
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Affiliation(s)
- Virginie Ducrot
- INRA, Équipe Écotoxicologie et Qualité des Milieux Aquatiques, UMR985 Ecologie et Santé des Ecosystèmes, Agrocampus Ouest, 65 rue de Saint Brieuc, 35000, Rennes, France.
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Zhou J, Cai ZH. Molecular cloning and characterization of prohormone convertase 1 gene in abalone (Haliotis diversicolor supertexta). Comp Biochem Physiol B Biochem Mol Biol 2010; 155:331-9. [DOI: 10.1016/j.cbpb.2009.12.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2009] [Revised: 12/20/2009] [Accepted: 12/22/2009] [Indexed: 11/26/2022]
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Sternberg RM, Gooding MP, Hotchkiss AK, LeBlanc GA. Environmental-endocrine control of reproductive maturation in gastropods: implications for the mechanism of tributyltin-induced imposex in prosobranchs. ECOTOXICOLOGY (LONDON, ENGLAND) 2010; 19:4-23. [PMID: 19653098 DOI: 10.1007/s10646-009-0397-z] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2008] [Accepted: 07/20/2009] [Indexed: 05/28/2023]
Abstract
Prosobranch snails have been afflicted globally by a condition whereby females develop male sex characteristics, most notably a penis. This condition, known as imposex, has been causally associated with the ubiquitous environmental contaminant tributyltin (TBT). Deduction of the mechanism by which TBT causes imposex has been hampered by the lack of understanding of the normal endocrine regulation of reproductive tract recrudescence in these organisms. We have reviewed the relevant literature on the environmental and endocrine factors that regulate reproductive tract recrudescence, sexual differentiation, and reproduction in gastropods. We provide a cohesive model for the environmental-endocrine regulation of reproduction in these organisms, and use this information to deduce a most likely mechanism by which TBT causes imposex. Photoperiod appears to be the predominant environmental cue that regulates reproductive tract recrudescence. Secondary cues include temperature and nutrition which control the timing of breeding and egg laying. Several hormone products of the central and peripheral nervous systems have been identified that contribute to recrudescence, reproductive behaviors, oocyte maturation and egg laying. Retinoic acid signaling via the retinoid X-receptor (RXR) has shown promise to be a major regulator of reproductive tract recrudescence. Furthermore, TBT has been shown to be a high affinity ligand for the RXR and the RXR ligand 9-cis retinoic acid causes imposex. We propose that TBT causes imposex through the inappropriate activation of this signaling pathway. However, uncertainties remain in our understanding of the environmental-endocrine regulation of reproduction in gastropods. Definitive elucidation of the mechanism of action of TBT awaits resolution of these uncertainties.
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Affiliation(s)
- Robin M Sternberg
- Department of Environmental and Molecular Toxicology, North Carolina State University, Raleigh, NC 27695, USA
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Clarke N, Routledge EJ, Garner A, Casey D, Benstead R, Walker D, Watermann B, Gnass K, Thomsen A, Jobling S. Exposure to treated sewage effluent disrupts reproduction and development in the seasonally breeding Ramshorn snail (subclass: Pulmonata, Planorbarius corneus). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2009; 43:2092-2098. [PMID: 19368219 DOI: 10.1021/es8020167] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Experiments were conducted to assess the impacts of exposure to sewage treatment works (STW) effluent upon the growth, reproductive function, and sexual development of the European mollusc, Planorbarius corneus under seasonally varying temperatures and photoperiodic conditions. In river water, a clear seasonal change in the number and weight of egg masses (during both 2003 and 2004), and in the number of eggs produced, was found, providing evidence for profound effects of both changing temperature and photoperiod on reproduction. Exposure to STW effluent caused disturbances in this seasonal reproductive cycle at all concentrations tested. The effects included significant dose-dependent increases in fecundity and in the overall length of the reproductive cycle in adult snails exposed to both 50% and 100% effluent relative to river water for a period of up to 14 weeks. Disturbances in the development of both the male and female gametes of the both the adult snails and their developmentally exposed offspring were also seen. These effects were more evident in the offspring than in the adults.
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Affiliation(s)
- Neil Clarke
- Brunel University, Uxbridge, Middlesex, UB8 3PH
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Sánchez-Argüello P, Fernández C, Tarazona JV. Assessing the effects of fluoxetine on Physa acuta (Gastropoda, Pulmonata) and Chironomus riparius (Insecta, Diptera) using a two-species water-sediment test. THE SCIENCE OF THE TOTAL ENVIRONMENT 2009; 407:1937-1946. [PMID: 19157519 DOI: 10.1016/j.scitotenv.2008.12.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2008] [Revised: 12/03/2008] [Accepted: 12/04/2008] [Indexed: 05/27/2023]
Abstract
Fluoxetine has been tested in a two-species water-sediment system, which allowed a two-generation study with Chironomus riparius and a partial life-cycle with the freshwater snail Physa acuta to be performed at the same time. The design considered the continuous application of fluoxetine to overlaying water for nominal concentrations of 31.25, 62.5, 125 and 250 microg/L. A fifth treatment (87.5 microg/L) level consisted of pulse applications once a week. Measures of water and sediment concentrations were determined once a week and at the end of experiment (day 44), respectively. The fate study demonstrated that water dissipation can be explained by partitioning of fluoxetine to sediment. At the end of experiment, the percentage of detected fluoxetine was up to 10-fold higher in sediment than in overlaying water. The employed two-species test allowed distinguishing, in the same exposure conditions, effects due to waterborne exposure together ingestion at the sediment surface (freshwater grazing snail P. acuta) and exposure by burrowing activities (sediment-dwelling insect larvae C. riparius). The effect assessment showed a stimulation of P. acuta reproduction at lower concentrations (31.25 and 62.5 microg/L), while the opposite effect was observed at the highest treatment (250 microg/L). Additional studies should be conducted to establish if the statistically significant differences observed in F0 sex ratio at the 62.5 microg/L and F1 adult emergence at 31.25 microg/L of C. riparius have a toxicological significance. This study showed that fluoxetine can affect reproduction of freshwater molluscs. The results of the present study may contribute to knowledge on ecotoxicology of pharmaceuticals, about which little data is available. The possible consequences and implications for targeting the environmental risk assessment of fluoxetine are discussed.
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Affiliation(s)
- Paloma Sánchez-Argüello
- Laboratory for Ecotoxicology, Department of the Environment, INIA, Crta, A Coruña km 7, 28040 Madrid, Spain.
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Antizar-Ladislao B. Polycyclic aromatic hydrocarbons, polychlorinated biphenyls, phthalates and organotins in northern Atlantic Spain's coastal marine sediments. ACTA ACUST UNITED AC 2009; 11:85-91. [DOI: 10.1039/b808668k] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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