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Louzon M, de Vaufleury A, Capelli N. Ecogenotoxicity assessment with land snails: A mini-review. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2023; 792:108472. [PMID: 37690511 DOI: 10.1016/j.mrrev.2023.108472] [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: 04/05/2023] [Revised: 09/06/2023] [Accepted: 09/07/2023] [Indexed: 09/12/2023]
Abstract
In the context of the increasing environmental and sanitary crisis, it is accepted that soil pollution can cause health alterations and disturb natural population dynamics. Consequently, the assessment of the genotoxic potential of compounds found in contaminated soils is important. Indeed, the alteration of genomic integrity may increase the risk of cancer development and may impair reproduction and long-term population dynamics. Among the methodologies to assess terrestrial genotoxic potential, there has been growing interest during the last decade in monitoring alterations of the genome in bioindicators of soil quality. As some land snail species are recognized bioindicators of soil quality, especially to assess the environmental and toxicological bioavailability of compounds, this review focuses on current knowledge regarding the genotoxicology of land snails. Classical biomarkers to assess genotoxic effects have been used (e.g., DNA breakage, micronuclei, random amplification polymorphic DNA) at various stages of the life cycle, including embryos. The studies were performed in vitro, in vivo, in situ and ex situ and covered a diverse set of contaminants (nanoparticles, metal(loid)s, pesticides, polycyclic aromatic hydrocarbons) and snail species (Cantareus aspersus, Eobania vermiculata, Theba pisana, Helix lucorum). Based on recent studies reviewed here, the use of land snails to map soil genotoxic potential is promising due to their ability to reveal pollution and subsequent environmental risks. Moreover, the position of snails in the trophic chain and the existing bridges between contaminant bioavailability to snails and bioaccessibility to humans reinforce the value of land snail-based ecotoxicological assessment.
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Affiliation(s)
- Maxime Louzon
- Ecosystem department, ENVISOL, 2 rue Hector Berlioz, 38110 La Tour du Pin, France
| | - Annette de Vaufleury
- UMR CNRS 6249 Chrono-Environnement, University of Franche-Comté, 16 route de Gray, 25030 Besançon Cedex, France
| | - Nicolas Capelli
- UMR CNRS 6249 Chrono-Environnement, University of Franche-Comté, 16 route de Gray, 25030 Besançon Cedex, France.
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Sargsyan A, Hovhannisyan G, Simonyan A, Arakelyan M, Arzumanyan M, Aroutiounian R. Application of land snail Helix lucorum for evaluation of genotoxicity of soil pollution. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2022; 878:503500. [PMID: 35649673 DOI: 10.1016/j.mrgentox.2022.503500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 04/15/2022] [Accepted: 05/04/2022] [Indexed: 06/15/2023]
Abstract
Application of native species as sentinels allows environmental scientists to determine real genotoxic impact of environmental pollutants. The present study aims at investigating the DNA damage in the land snail Helix lucorum as a biomarker of soil pollution. For this reason, the genotoxic impact of contaminated soil on H. lucorum, collected from different polluted areas, was investigated using the comet assay in haemocytes and digestive gland cells. An increase in DNA damage was found in the snails sampled from polluted sites compared with the reference one. Strong correlations between DNA damage in haemocytes and digestive gland cells with the level of contamination indicate pollution-induced genotoxic effects in both tissues. At the same time, the digestive gland was more sensitive towards pollutants compared with haemolymph. A direct relationship between concentrations of Cu, As and Mo in soil and the number of damaged cells for hаemolymph and digestive gland tissue was found. However, the data obtained reflect the total genotoxicity of all pollutants in the studied areas. Significant correlations between the DNA damage measured by the comet assay and metal contents in soil indicate that it is a suitable biomarker in ecotoxicological studies. Our results indicate the effectiveness of H. lucorum in biomonitoring of environmental pollution.
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Affiliation(s)
- Anzhela Sargsyan
- Department of Genetics and Cytology, Yerevan State University, 8 Charents Str., P.O. Box 0025, Yerevan, Armenia.
| | - Galina Hovhannisyan
- Department of Genetics and Cytology, Yerevan State University, 8 Charents Str., P.O. Box 0025, Yerevan, Armenia; Laboratory of General and Molecular Genetics, RI "Biology", Faculty of Biology Yerevan State University, 8 Charents Str., P.O. Box 0025, Yerevan, Armenia.
| | - Anna Simonyan
- A.V. Dumansky Institute of Colloid Chemistry and Water Chemistry of the National Academy of Sciences of Ukraine, 42 Vernadsky Avenue, P.O. Box 03142, Kyiv, Ukraine.
| | - Marine Arakelyan
- Department of Zoology, Yerevan State University, 8 Charents Str., P.O. Box 0025, Yerevan, Armenia.
| | - Meri Arzumanyan
- Department of Zoology, Yerevan State University, 8 Charents Str., P.O. Box 0025, Yerevan, Armenia.
| | - Rouben Aroutiounian
- Department of Genetics and Cytology, Yerevan State University, 8 Charents Str., P.O. Box 0025, Yerevan, Armenia; Laboratory of General and Molecular Genetics, RI "Biology", Faculty of Biology Yerevan State University, 8 Charents Str., P.O. Box 0025, Yerevan, Armenia.
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Louzon M, Gimbert F, Belly T, Amiot C, Pauget B, de Vaufleury A, Capelli N. From environmental bioavailability of metal(loid)s to their ecogenotoxicological effects in land snails. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:43629-43642. [PMID: 33840022 DOI: 10.1007/s11356-021-13618-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
To date, no study has linked the environmental and the ecogenotoxicological bioavailability of contaminants to land snails. Yet, understanding the specific ecotoxicological mechanisms from bioaccumulation to genotoxicity is necessary e.g., to build an adverse outcome pathway relevant to risk assessment. Consequently, the aim of our study is to look for relationships between accumulated concentrations of As, Cd and Hg in sub-adult snails and ecotoxicological effects at the individual (survival and growth) and molecular (genomic stability) levels. This study combines random amplified polymorphic DNA (RAPD) coupled with high-resolution capillary electrophoresis system (HRS) and micronucleus (MN) assay on haemocytes to consider various types of cytogenomic damage, such as chromosomal aberrations, breakages, adducts and mutations. The results showed alteration of the individual endpoints at higher accumulation quotients (AQs) that reflect the excess of transfers to snails, especially with decreased survival for As. In addition, genotoxic effects were observed with an increased occurrence of MN in haemocytes for the three meta(loid)s considered (R2 from 0.57 to 0.61 as a function of the meta(loid)s). No concentration-dependent decrease in genome stability was highlighted by RAPD-HRS in snails exposed to As and Cd but not Hg. Our results demonstrate the complementarity of the RAPD-HRS and the MN assay for understanding the different genotoxic mechanisms of the three metal(loid)s studied in land snails. They show a way to better assess environmental risks of contaminated soils by associating ecotoxicity, genotoxicity and bioaccumulation assays (ISO 24032), i.e., ecogenotoxicological bioavailability. Convergences highlighted here between the bioaccumulation of metal(loid)s in viscera and genotoxic effects in haemocytes constitute a way to better assess the bioavailability of contaminants in soils to the land snail and the subsequent environmental risk.
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Affiliation(s)
- Maxime Louzon
- UMR CNRS 6249 Chrono-Environment, University of Franche-Comté, 16 route de Gray, 25030, Besançon Cedex, France
| | - Frédéric Gimbert
- UMR CNRS 6249 Chrono-Environment, University of Franche-Comté, 16 route de Gray, 25030, Besançon Cedex, France
| | - Thibault Belly
- UMR CNRS 6249 Chrono-Environment, University of Franche-Comté, 16 route de Gray, 25030, Besançon Cedex, France
| | - Caroline Amiot
- UMR CNRS 6249 Chrono-Environment, University of Franche-Comté, 16 route de Gray, 25030, Besançon Cedex, France
| | - Benjamin Pauget
- TESORA, Le Visium, 22 Avenue Aristide Briand, 94110, Arcueil, France
| | - Annette de Vaufleury
- UMR CNRS 6249 Chrono-Environment, University of Franche-Comté, 16 route de Gray, 25030, Besançon Cedex, France
| | - Nicolas Capelli
- UMR CNRS 6249 Chrono-Environment, University of Franche-Comté, 16 route de Gray, 25030, Besançon Cedex, France.
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Radwan MA, El-Gendy KS, Gad AF. Biomarker responses in terrestrial gastropods exposed to pollutants: A comprehensive review. CHEMOSPHERE 2020; 257:127218. [PMID: 32497833 DOI: 10.1016/j.chemosphere.2020.127218] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 05/23/2020] [Accepted: 05/24/2020] [Indexed: 06/11/2023]
Abstract
The chemical contamination of terrestrial ecosystems is a great concern as these ecosystems are the target of most of the pollutants derived from anthropogenic activities such as pesticides, heavy metals, nanoparticles, and others. Terrestrial gastropods are considered to be excellent sentinel organisms for biological monitoring of environmental pollution, as they have the ability to accumulate chemicals in their tissues and exhibit a great potential to evaluate the ecological effects of pollutants in terrestrial ecosystems. The use of biomarkers as sensitive parameters to estimate the exposure or resulting effects of chemicals have received considerable attention. The successful biomarker must be applicable in the laboratory and field conditions. Many biomarkers have been examined to understand the adverse effects of pollutants. In this review, we shed light on different types of biomarkers, such as oxidative stress, genotoxicity and immunotoxicity as diagnostic tools for monitoring the impacts of pollution. These biomarkers can provide information about early detection and quantification of these impacts during their initial manifestations and can facilitate the implementation of a rapid preventive and/or restorative responses in the affected ecosystems, as well as single or multiple biomarkers can be integrated into routine monitoring programs.
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Affiliation(s)
- M A Radwan
- Department of Pesticide Chemistry and Technology, Faculty of Agriculture, University of Alexandria, El-Shatby, 21545, Alexandria, Egypt.
| | - 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
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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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Louzon M, Pauget B, Gimbert F, Morin-Crini N, de Vaufleury A. Ex situ environmental risk assessment of polluted soils using threshold guide values for the land snail Cantareus aspersus. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 721:137789. [PMID: 32197284 DOI: 10.1016/j.scitotenv.2020.137789] [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: 12/16/2019] [Revised: 03/05/2020] [Accepted: 03/06/2020] [Indexed: 06/10/2023]
Abstract
Environmental risk assessment of contaminated soils should ideally be carried out with complementary approaches (chemical and biological) conducted in situ and ex situ. While biological methods based on the assessment of effect and bioaccumulation in bioindicators exist for soil fauna organisms, such as land snails, the methodology is currently limited in the field to 14 metallic elements (MEs). To provide new relevant tools to the stakeholders of polluted fields, the aim of this work is to determine ex situ threshold guide values (ex situ TGVs), for 15 MEs, 16 polycyclic aromatic hydrocarbons (PAHs) and 7 polychlorinated biphenyls (PCBs). These ex situ TGVs are the usual concentration of contaminants found in the viscera of the bioindicator Cantareus aspersus after 28 days of exposure to uncontaminated soils. The second objective was to assess and validate the relevance of these ex situ TGVs for the interpretation of contamination levels in various European contaminated soils based on global index calculations: i) The sum of the excess of transfers (SETs) and ii) the weighted SETs based on the general toxicity points of each contaminant used to evaluate the risk of transferred MEs, PAHs and PCBs (ERITMEs, ERITPAHs and ERITPCBs, respectively). In addition, the influence of soil physico-chemical properties on accumulation was modelled to better understand their roles in bioavailability. The presented ex situ TGV and the associated indicators (the global sum of the excess of transfers and global ecotoxicological risk) provide a basis by which stakeholders can prioritize the management of polluted soils depending on the risk they may represent. The determination of ex situ TGVs for organic and inorganic compounds provides new tools to characterize excess contaminant transfers, and it will also allow the use of snails for ERAs, notably for common pollutants, such as PAHs and PCBs for which guide values are not available.
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Affiliation(s)
- M Louzon
- UMR CNRS 6249 Chrono-Environnement, University of Franche-Comté, 16 route de Gray, 25030 Besançon Cedex, France
| | - B Pauget
- TESORA, Le Visium, 22 avenue Aristide Briand, 94110 Arcueil, France
| | - F Gimbert
- UMR CNRS 6249 Chrono-Environnement, University of Franche-Comté, 16 route de Gray, 25030 Besançon Cedex, France
| | - N Morin-Crini
- UMR CNRS 6249 Chrono-Environnement, University of Franche-Comté, 16 route de Gray, 25030 Besançon Cedex, France
| | - A de Vaufleury
- UMR CNRS 6249 Chrono-Environnement, University of Franche-Comté, 16 route de Gray, 25030 Besançon Cedex, France.
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Molino C, Filippi S, Stoppiello GA, Meschini R, Angeletti D. In vitro evaluation of cytotoxic and genotoxic effects of Di(2-ethylhexyl)-phthalate (DEHP) on European sea bass (Dicentrarchus labrax) embryonic cell line. Toxicol In Vitro 2019; 56:118-125. [PMID: 30685479 DOI: 10.1016/j.tiv.2019.01.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 11/14/2018] [Accepted: 01/21/2019] [Indexed: 10/27/2022]
Abstract
Marine litter is extensively distributed in the marine environment, and plastic debris, of which litter is mostly composed, can be a major source of pollutants. Among them, Di(2-ethylhexyl)-phthalate (DEHP) is the most abundantly used plastic additive, and it has been reported to affect biochemical processes both in humans and wildlife; however, studies on its toxicological effects on marine organisms are still scarce. In this survey, we studied the cytotoxic, genotoxic, and mutagenic effects of DEHP in European sea bass embryonic cell line (DLEC) by applying specific in vitro tests. Results showed a significant decrease in cell viability starting at 0.01 mM of DEHP after 24 h together with a significant increase in apoptosis and necrosis, morphological changes and cell detachment. Consistently, we detected a moderate increase in DNA strand breaks from 0.02 mM, and a dose-dependent increase in of micronucleus frequency from 0.01 mM, accompanied by a significant inhibition of cell proliferation, which suggested a possible aneugenic effect of this phthalate. Our results demonstrate that in vitro exposure to DEHP had a dose-dependent cytotoxic and genotoxic effects in DLEC cell line, encouraging further investigation into its effects in in vivo and/or ex vivo cell systems of marine organisms.
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Affiliation(s)
- Chiara Molino
- Department of Ecological and Biological Sciences, Ichthyogenic Experimental Marine Center (CISMAR), University of Tuscia, Borgo Le Saline, 01016 Tarquinia, VT, Italy; Department of Ecological and Biological Sciences, Laboratory of Molecular Cytogenetic and Mutagenesis, University of Tuscia, Via San Camillo de Lellis s.n.c., 01100 Viterbo, Italy
| | - Silvia Filippi
- Department of Ecological and Biological Sciences, Laboratory of Molecular Cytogenetic and Mutagenesis, University of Tuscia, Via San Camillo de Lellis s.n.c., 01100 Viterbo, Italy
| | - Gerardo Antonio Stoppiello
- Department of Ecological and Biological Sciences, Laboratory of Molecular Cytogenetic and Mutagenesis, University of Tuscia, Via San Camillo de Lellis s.n.c., 01100 Viterbo, Italy
| | - Roberta Meschini
- Department of Ecological and Biological Sciences, Laboratory of Molecular Cytogenetic and Mutagenesis, University of Tuscia, Via San Camillo de Lellis s.n.c., 01100 Viterbo, Italy.
| | - Dario Angeletti
- Department of Ecological and Biological Sciences, Ichthyogenic Experimental Marine Center (CISMAR), University of Tuscia, Borgo Le Saline, 01016 Tarquinia, VT, Italy
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Gajski G, Žegura B, Ladeira C, Pourrut B, Del Bo’ C, Novak M, Sramkova M, Milić M, Gutzkow KB, Costa S, Dusinska M, Brunborg G, Collins A. The comet assay in animal models: From bugs to whales – (Part 1 Invertebrates). MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2019; 779:82-113. [DOI: 10.1016/j.mrrev.2019.02.003] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 02/07/2019] [Accepted: 02/09/2019] [Indexed: 01/09/2023]
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Filippi S, Meschini R, Spognardi S, Papetti P, Angeletti D. Genetic effects in Helix aspersa near a coal plant revealed by the micronucleus test. ECOTOXICOLOGY (LONDON, ENGLAND) 2018; 27:234-243. [PMID: 29404870 DOI: 10.1007/s10646-018-1906-8] [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] [Accepted: 01/19/2018] [Indexed: 06/07/2023]
Abstract
Coal plants can be a major source of mutagenic pollutants. In this study we used the common land snail Helix aspersa, to detect the mutagenic effect of pollution from a coal plant in central Italy applying the micronucleus test (MN) on snail's haemocytes and evaluating trace elements concentration (As Cd, Pb, Hg, and Zn) in soil and snails. Snails from a biological farm were exposed for 13 days in five locations at different distances from the plant. Wild snails collected in the same locations were also analysed. MN frequency in exposed snails was significantly higher in four locations within 10 km from to the plant, with respect to the control and the farthest location. Comparing the MN frequency between farmed and wild snails, a significantly higher frequency emerged for the exposed snails in all locations except the farthest, likely indicating adaptation or selection of the wild organisms due to chronic exposure to pollutants. In natural snails significantly higher MN frequencies with near the plant emerged as well. Trace elements analysis showed significant correlations between MN frequencies and both Zn and As concentrations in soil, for both exposed and wild snails, and Zn and Pb concentrations in exposed snails. Our results were consistent with those previously obtained when evaluating primary DNA damage in natural snails from the same area and show that the snails near the plant were affected by a permanent cytogenetic damage. Moreover, they confirm the suitability of snails for biomonitoring the presence of pollutants with mutagenic effect.
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Affiliation(s)
- Silvia Filippi
- Department of Ecological and Biological Sciences, Tuscia University, Largo dell'Università snc, 01100, Viterbo, Italy
| | - Roberta Meschini
- Department of Ecological and Biological Sciences, Tuscia University, Largo dell'Università snc, 01100, Viterbo, Italy.
| | - Sara Spognardi
- Department of Business Studies, University of Roma Tre, Via Ostiense, 159, 00154, Rome, Italy
| | - Patrizia Papetti
- Department of Economics and Law, Territorial and Products Analysis Laboratory (LAMeT), University of Cassino and Southern Lazio, Via Sant'Angelo, Località Folcara, 03043, Cassino, Italy
| | - Dario Angeletti
- Department of Ecological and Biological Sciences, Tuscia University, Largo dell'Università snc, 01100, Viterbo, Italy
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Parmakelis A, Kotsakiozi P, Kontos CK, Adamopoulos PG, Scorilas A. The transcriptome of a "sleeping" invader: de novo assembly and annotation of the transcriptome of aestivating Cornu aspersum. BMC Genomics 2017; 18:491. [PMID: 28659170 PMCID: PMC5490208 DOI: 10.1186/s12864-017-3885-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Accepted: 06/20/2017] [Indexed: 11/25/2022] Open
Abstract
Background Cornu aspersum is a quite intriguing species from the point of view of ecology and evolution and its potential use in medical and environmental applications. It is a species of economic importance since it is farmed and used for culinary purposes. However, the genomic tools that would allow a thorough insight into the ecology, evolution, nutritional and medical properties of this highly adaptable organism, are missing. In this work, using next-generation sequencing (NGS) techniques we assessed a significant portion of the transcriptome of this non-model organism. Results Out of the 9445 de novo assembled contigs, 2886 (30.6%) returned significant hits and for 2261 (24%) of them Gene Ontology (GO) terms associated to the hits were retrieved. A high percentage of the contigs (69.4%) produced no BLASTx hits. The GO terms were grouped to reflect biological processes, molecular functions and cellular components. Certain GO terms were dominant in all groups. After scanning the assembled transcriptome for microsatellites (simple sequence repeats, SSRs), a total of 563 SSRs were recovered. Among the identified SSRs, trinucleotide repeats were the predominant followed by tetranucleotide and dinucleotide repeats. Conclusion The annotation success of the transcriptome of C. aspersum was relatively low. This is probably due to the very limited number of annotated reference genomes existing for mollusc species, especially terrestrial ones. Several biological processes being active in the aestivating species were revealed through the association of the transcripts to enzymes relating to the pathways. The genomic tools provided herein will eventually aid in the study of the global genomic diversity of the species and the investigation of aspects of the ecology, evolution, behavior, nutritional and medical properties of this highly adaptable organism.
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Affiliation(s)
- Aristeidis Parmakelis
- Department of Ecology and Taxonomy, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece.
| | - Panayiota Kotsakiozi
- Department of Ecology and Taxonomy, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Christos K Kontos
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Panagiotis G Adamopoulos
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Andreas Scorilas
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
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de Lapuente J, Lourenço J, Mendo SA, Borràs M, Martins MG, Costa PM, Pacheco M. The Comet Assay and its applications in the field of ecotoxicology: a mature tool that continues to expand its perspectives. Front Genet 2015; 6:180. [PMID: 26089833 PMCID: PMC4454841 DOI: 10.3389/fgene.2015.00180] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 04/28/2015] [Indexed: 01/20/2023] Open
Abstract
Since Singh and colleagues, in 1988, launched to the scientific community the alkaline Single Cell Gel Electrophoresis (SCGE) protocol, or Comet Assay, its uses and applications has been increasing. The thematic areas of its current employment in the evaluation of genetic toxicity are vast, either in vitro or in vivo, both in the laboratory and in the environment, terrestrial or aquatic. It has been applied to a wide range of experimental models: bacteria, fungi, cells culture, arthropods, fishes, amphibians, reptiles, mammals, and humans. This document is intended to be a comprehensive review of what has been published to date on the field of ecotoxicology, aiming at the following main aspects: (i) to show the most relevant experimental models used as bioindicators both in the laboratory and in the field. Fishes are clearly the most adopted group, reflecting their popularity as bioindicator models, as well as a primary concern over the aquatic environment health. Amphibians are among the most sensitive organisms to environmental changes, mainly due to an early aquatic-dependent development stage and a highly permeable skin. Moreover, in the terrestrial approach, earthworms, plants or mammalians are excellent organisms to be used as experimental models for genotoxic evaluation of pollutants, complex mix of pollutants and chemicals, in both laboratory and natural environment. (ii) To review the development and modifications of the protocols used and the cell types (or tissues) used. The most recent developments concern the adoption of the enzyme linked assay (digestion with lesion-specific repair endonucleases) and prediction of the ability to repair of oxidative DNA damage, which is becoming a widespread approach, albeit challenging. For practical/technical reasons, blood is the most common choice but tissues/cells like gills, sperm cells, early larval stages, coelomocytes, liver or kidney have been also used. (iii) To highlight correlations with other biomarkers. (iv) To build a constructive criticism and summarize the needs for protocol improvements for future test applications within the field of ecotoxicology. The Comet Assay is still developing and its potential is yet underexploited in experimental models, mesocosmos or natural ecosystems.
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Affiliation(s)
- Joaquín de Lapuente
- Unit of Experimental Toxicology and Ecotoxicology (UTOX-CERETOX), Barcelona Science ParkBarcelona, Spain
| | - Joana Lourenço
- Department of Biology & CESAM, University of Aveiro, Campus Universitário de Santiago. Aveiro, Portugal
| | - Sónia A. Mendo
- Department of Biology & CESAM, University of Aveiro, Campus Universitário de Santiago. Aveiro, Portugal
| | - Miquel Borràs
- Unit of Experimental Toxicology and Ecotoxicology (UTOX-CERETOX), Barcelona Science ParkBarcelona, Spain
| | - Marta G. Martins
- Departamento de Ciências e Engenharia do Ambiente, MARE – Marine and Environmental Sciences Centre, Faculdade de Ciências e Tecnologia da Universidade Nova de LisboaCaparica, Portugal
| | - Pedro M. Costa
- Departamento de Ciências e Engenharia do Ambiente, MARE – Marine and Environmental Sciences Centre, Faculdade de Ciências e Tecnologia da Universidade Nova de LisboaCaparica, Portugal
| | - Mário Pacheco
- Department of Biology & CESAM, University of Aveiro, Campus Universitário de Santiago. Aveiro, Portugal
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Ali D, Ali H, Alarifi S, Kumar S, Serajuddin M, Mashih AP, Ahmed M, Khan M, Adil SF, Shaik MR, Ansari AA. Impairment of DNA in a freshwater gastropod (Lymnea luteola L.) after exposure to titanium dioxide nanoparticles. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2015; 68:543-552. [PMID: 25661047 DOI: 10.1007/s00244-015-0132-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 01/19/2015] [Indexed: 06/04/2023]
Abstract
The apoptotic and genotoxic potential of titanium dioxide nanoparticles (TiO2NPs) were evaluated in hemocyte cells of freshwater snail Lymnea luteola L. Before evaluation of the toxic potential, mean size of the TiO2NPs was determined using a transmission electron microscopy and dynamic light scattering. In this study, L. luteola were exposed to different concentrations of TiO2NPs (28, 56, and 84 μg/ml) over 96 h. Induction of oxidative stress in hemolymph was observed by a decrease in reduced glutathione and glutathione-S-transferase levels at different concentration of TiO2NPs and, in contrast, an increase in malondialdehyde and reactive oxygen species levels. Catalase activity was decreased at lower concentrations but increased at greater concentration of TiO2NPs. The extent of DNA fragmentation occurring in L. luteola due to ecotoxic impact TiO2NPs was further substantiated by alkaline single-cell gel electrophoresis assay and expressed in terms of % tail DNA and olive tail moment. The alkaline single-cell gel electrophoresis assay for L. luteola clearly shown relatively greater DNA damage at the highest concentration of TiO2NPs.The results indicate that the interaction of TiO2NPs with snail influences toxicity, which is mediated by oxidative stress according dose and in a time-dependent manner. The results of this study showed the importance of a multibiomarker approach for assessing the injurious effects of TiO2NPs to freshwater snail L. luteola, which may be vulnerable due to the continuous discharge of TiO2NPs into the aquatic ecosystems. The measurement of DNA integrity in L. luteola thus provides an early warning signal of contamination of the aquatic ecosystem by TiO2NPs.
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Affiliation(s)
- Daoud Ali
- Department of Zoology, College of Science, King Saud University, BOX 2455, Riyadh, 11451, Saudi Arabia,
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Sarkar A, Bhagat J, Sarker S. Evaluation of impairment of DNA in marine gastropod, Morula granulata as a biomarker of marine pollution. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014; 106:253-261. [PMID: 24865330 DOI: 10.1016/j.ecoenv.2014.04.023] [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: 11/08/2013] [Revised: 04/12/2014] [Accepted: 04/20/2014] [Indexed: 06/03/2023]
Abstract
The impairment of DNA in marine gastropod Morula granulata was evaluated in terms of the loss of DNA integrity in the species as a measure of the impact of genotoxic contaminants prevalent in the marine environment along the coast of Goa, India. The extent of DNA damage occurred in the marine gastropods collected from different sampling sites such as Arambol, Anjuna, Sinquerim, Dona Paula, Bogmalo, Hollant, Velsao, Betul and Palolem along the coast of Goa was measured following the technique of partial alkaline unwinding as well as comet assays. The highest DNA integrity was observed at Arambol (F, 0.75), identified as the reference site, whereas the lowest DNA integrity at Hollant (F, 0.33) situated between the two most contaminated sites at Bogmalo and Velsao. The impact of genotoxic contaminants on marine gastropods was pronounced by their low DNA integrity at Sinquerim (F, 0.40) followed by Betul (F, 0.47), Velsao (F, 0.51), Anjuna (F, 0.54), Bogmalo (F, 0.55), Dona Paula (F, 0.67) and Palolem (F, 0.70). The extent of DNA damage occurred in M. granulata due to ecotoxicological impact of the prevailing marine pollutants along the coast of Goa was further substantiated by comet assay and expressed in terms of %head-DNA, %tail DNA, tail length and Olive tail moment. The single cell gel electrophoresis of M. granulata clearly showed relatively higher olive tail moment in the marine gastropod from the contaminated sites, Anjuna, Hollant, Velsao and Betul. The variation in the mean %head DNA at different sampling sites clearly indicated that the extent of DNA damage in marine gastropod increases with the increase in the levels of contamination at different sampling sites along the coast. The stepwise multiple regression analysis of the water quality parameters showed significant correlation between the variation in DNA integrity and PAH in combination with NO3, salinity and PO4 (R¯(2), 0.90). The measurement of DNA integrity in M. granulata thus provides an early warning signal of contamination of the coastal ecosystem of Goa by genotoxic contaminants.
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Affiliation(s)
- A Sarkar
- Chemical Oceanography Oceanography Division, CSIR - National Institute of Oceanography Dona Paula, Goa 403004, India; Global Enviro-Care, Kevnem, Caranzalem, Goa 403002, India.
| | - Jacky Bhagat
- Chemical Oceanography Oceanography Division, CSIR - National Institute of Oceanography Dona Paula, Goa 403004, India
| | - Subhodeep Sarker
- Clinical Division of Fish Medicine, University of Veterinary Medicine, Veterinarplatz 1, 1210 Vienna, Austria
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