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Lagoon Resident Fish Species of Conservation Interest According to the Habitat Directive (92/43/CEE): A Review on Their Potential Use as Ecological Indicator Species. WATER 2020. [DOI: 10.3390/w12072059] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Transitional waters are fragile ecosystems with high ecological, social and economic values, that undergo numerous threats. According to the information provided by European Member States in the framework of the European Directive 92/43/EEC (Habitat Directive), the main threat to these ecosystems is represented by morphological and hydrological changes. The present work focuses on six lagoon fish species included in the Habitat Directive annex II (species requiring conservation measures: Aphanius fasciatus, A. iberus, Knipowitschia panizzae, Ninnigobius canestrinii, Valencia hispanica and V. letourneuxi) that spend their entire life cycle in the Mediterranean priority habitat 1150* “Coastal lagoons”. The overview of the current scientific literature allowed us to highlight how the presence and abundance of these species may provide important indications on the conservation status of coastal lagoon habitats. In fact, their occurrence, distribution and biology depend on the presence of peculiar structures, such as salt marshes, small channels, isolated pools and oligohaline areas. Coastal lagoon fragmentation and habitat loss have led to a significant reduction in genetic diversity or local population extinction. Although Aphanius and gobies have been shown to survive in eutrophic environments, it is clear that they cannot complete their life cycle without salt marshes (mainly Aphanius) and wetland areas (mainly gobies).
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Gajski G, Žegura B, Ladeira C, Novak M, Sramkova M, Pourrut B, Del Bo' C, Milić M, Gutzkow KB, Costa S, Dusinska M, Brunborg G, Collins A. The comet assay in animal models: From bugs to whales - (Part 2 Vertebrates). MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2019; 781:130-164. [PMID: 31416573 DOI: 10.1016/j.mrrev.2019.04.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 03/26/2019] [Accepted: 04/10/2019] [Indexed: 12/20/2022]
Abstract
The comet assay has become one of the methods of choice for the evaluation and measurement of DNA damage. It is sensitive, quick to perform and relatively affordable for the evaluation of DNA damage and repair at the level of individual cells. The comet assay can be applied to virtually any cell type derived from different organs and tissues. Even though the comet assay is predominantly used on human cells, the application of the assay for the evaluation of DNA damage in yeast, plant and animal cells is also quite high, especially in terms of biomonitoring. The present extensive overview on the usage of the comet assay in animal models will cover both terrestrial and water environments. The first part of the review was focused on studies describing the comet assay applied in invertebrates. The second part of the review, (Part 2) will discuss the application of the comet assay in vertebrates covering cyclostomata, fishes, amphibians, reptiles, birds and mammals, in addition to chordates that are regarded as a transitional form towards vertebrates. Besides numerous vertebrate species, the assay is also performed on a range of cells, which includes blood, liver, kidney, brain, gill, bone marrow and sperm cells. These cells are readily used for the evaluation of a wide spectrum of genotoxic agents both in vitro and in vivo. Moreover, the use of vertebrate models and their role in environmental biomonitoring will also be discussed as well as the comparison of the use of the comet assay in vertebrate and human models in line with ethical principles. Although the comet assay in vertebrates is most commonly used in laboratory animals such as mice, rats and lately zebrafish, this paper will only briefly review its use regarding laboratory animal models and rather give special emphasis to the increasing usage of the assay in domestic and wildlife animals as well as in various ecotoxicological studies.
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Affiliation(s)
- Goran Gajski
- Mutagenesis Unit, Institute for Medical Research and Occupational Health, Zagreb, Croatia.
| | - Bojana Žegura
- Department of Genetic Toxicology and Cancer Biology, National Institute of Biology, Ljubljana, Slovenia
| | - Carina Ladeira
- H&TRC - Health & Technology Research Center, Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Lisbon, Portugal; Centro de Investigação e Estudos em Saúde de Publica, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Matjaž Novak
- Department of Genetic Toxicology and Cancer Biology, National Institute of Biology, Ljubljana, Slovenia
| | - Monika Sramkova
- Biomedical Research Center, Cancer Research Institute, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Bertrand Pourrut
- EcoLab, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Cristian Del Bo'
- DeFENS-Division of Human Nutrition, University of Milan, Milan, Italy
| | - Mirta Milić
- Mutagenesis Unit, Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | | | - Solange Costa
- Environmental Health Department, National Health Institute Dr. Ricardo Jorge, Porto, Portugal; EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
| | - Maria Dusinska
- Health Effects Laboratory, Department of Environmental Chemistry-MILK, NILU - Norwegian Institute for Air Research, Kjeller, Norway
| | - Gunnar Brunborg
- Department of Molecular Biology, Norwegian Institute of Public Health, Oslo, Norway
| | - Andrew Collins
- Department of Nutrition, University of Oslo, Oslo, Norway
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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: 23] [Impact Index Per Article: 4.6] [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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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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Poorbagher H, Moghaddam MN, Eagderi S, Farahmand H. Estimating the DNA strand breakage using a fuzzy inference system and agarose gel electrophoresis, a case study with toothed carp Aphanius sophiae exposed to cypermethrin. ECOTOXICOLOGY (LONDON, ENGLAND) 2016; 25:1040-1046. [PMID: 27000282 DOI: 10.1007/s10646-016-1647-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/11/2016] [Indexed: 06/05/2023]
Abstract
The DNA breakage has been widely used in ecotoxicological studies to investigate effects of pesticides in fishes. The present study used a fuzzy inference system to quantify the breakage of DNA double strand in Aphanius sophiae exposed to the cypermethrin. The specimens were adapted to different temperatures and salinity for 14 days and then exposed to cypermethrin. DNA of each specimens were extracted, electrophoresed and photographed. A fuzzy system with three input variables and 27 rules were defined. The pixel value curve of DNA on each gel lane was obtained using ImageJ. The DNA breakage was quantified using the pixel value curve and fuzzy system. The defuzzified values were analyzed using a three-way analysis of variance. Cypermethrin had significant effects on DNA breakage. Fuzzy inference systems can be used as a tool to quantify the breakage of double strand DNA. DNA double strand of the gill of A. sophiae is sensitive enough to be used to detect cypermethrin in surface waters in concentrations much lower than those reported in previous studies.
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Affiliation(s)
- Hadi Poorbagher
- Department of Fisheries, Faculty of Natural Resources, University of Tehran, Karaj, PO Box 4314, Iran.
| | | | - Soheil Eagderi
- Department of Fisheries, Faculty of Natural Resources, University of Tehran, Karaj, PO Box 4314, Iran
| | - Hamid Farahmand
- Department of Fisheries, Faculty of Natural Resources, University of Tehran, Karaj, PO Box 4314, Iran
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Corredor-Santamaría W, Serrano Gómez M, Velasco-Santamaría YM. Using genotoxic and haematological biomarkers as an evidence of environmental contamination in the Ocoa River native fish, Villavicencio-Meta, Colombia. SPRINGERPLUS 2016; 5:351. [PMID: 27066365 PMCID: PMC4801821 DOI: 10.1186/s40064-016-1753-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 02/12/2016] [Indexed: 11/10/2022]
Abstract
The studies evaluating the impact of environmental pollution on aquatic organisms have had a growing concern in recent decades. The Ocoa River runs through Villavicencio city, receiving the wastewater produced in the city. To date studies reporting the effect and the consequences of Ocoa River pollution on aquatic organisms inhabiting this water body are unknown. Haematological and genotoxicity biomarkers were evaluated in peripheral blood of two native fish species Astyanax gr. bimaculatus and Aequidens metae during rainy and dry season at three different sites of Ocoa River called Nacimiento (site 1, before entering the city), Centauros (site 2, inside the city), Caño Seco (site 3, after the city). Also, fish from a reference site with little likelihood of contamination were sampled. Alterations such as decrease in erythrocyte count, lymphocytes, haemoglobin concentration and haematocrit percentage, and increased thrombocytes and neutrophils counts, together with nuclear abnormalities in erythrocytes such as increased frequency of micronuclei, lobed, blebbed and notched nuclei and binucleate cells were observed in fish from the site 3, followed by the site 2 in rainy season. These results shown that during rainy season, sites 2 and 3 receive domestic and industrial wastewater leading to genotoxic and haematological changes in the monitored organisms.
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Affiliation(s)
- Wilson Corredor-Santamaría
- Research Group in Aquatic and Environmental Biotechnology and Toxicology - BioTox, Faculty of Agricultural Sciences and Natural Resources, University of the Llanos, Km 12 Vía Puerto López, Villavicencio, Meta Colombia
| | - Marlon Serrano Gómez
- Research Group in Aquatic and Environmental Biotechnology and Toxicology - BioTox, Faculty of Agricultural Sciences and Natural Resources, University of the Llanos, Km 12 Vía Puerto López, Villavicencio, Meta Colombia ; Colombian Petroleum Institute- ICP, Piedecuesta, Santander Colombia
| | - Yohana María Velasco-Santamaría
- Research Group in Aquatic and Environmental Biotechnology and Toxicology - BioTox, Faculty of Agricultural Sciences and Natural Resources, University of the Llanos, Km 12 Vía Puerto López, Villavicencio, Meta Colombia
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7
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Probert PM, Palmer JM, Alhusainy W, Amer AO, Rietjens IMCM, White SA, Jones DE, Wright MC. Progenitor-derived hepatocyte-like (B-13/H) cells metabolise 1'-hydroxyestragole to a genotoxic species via a SULT2B1-dependent mechanism. Toxicol Lett 2015; 243:98-110. [PMID: 26739637 PMCID: PMC4729325 DOI: 10.1016/j.toxlet.2015.12.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 12/23/2015] [Accepted: 12/23/2015] [Indexed: 01/24/2023]
Abstract
Rat B-13 progenitor cells are readily converted into functional hepatocyte-like B-13/H cells capable of phase I cytochrome P450-dependent activation of pro-carcinogens and induction of DNA damage. The aim of the present study was to investigate whether the cells are also capable of Phase II sulphotransferase (SULT)-dependent activation of a pro-carcinogen to an ultimate carcinogen. To this end we therefore examined the bioactivation of the model hepatic (hepato- and cholangio-) carcinogen estragole and its proximate SULT1A1-activated genotoxic metabolite 1'-hydroxyestragole. Exposing B-13 or B-13/H cells to estragole (at concentrations up to 1mM) resulted in the production of low levels of 1'-hydroxyestragole, but did not result in detectable DNA damage. Exposing B-13/H cells - but not B-13 cells - to 1'-hydroxyestragole resulted in a dose-dependent increase in DNA damage in comet assays, confirmed by detection of N(2)-(trans-isoestragol-3'-yl)-2'-deoxyguanosine adducts. Genotoxicity was inhibited by general SULT inhibitors, supporting a role for SULTS in the activation of 1-hydroxyestragole in B-13/H cells. However, B-13 and B-13/H cells did not express biologically significant levels of SULT1A1 as determined by qRT-PCR, Western blotting and its associated 7-hydroxycoumarin sulphation activity. B-13 and B-13/H cells expressed - relative to intact rat liver - high levels of SULT2B1 (primarily the b isoform) and SULT4A1 mRNAs and proteins. B-13 and B-13/H cells also expressed the 3'-phosphoadenosine 5'-phosphosulphate synthase 1 required for the generation of activated sulphate cofactor 3'-phosphoadenosine 5'-phosphosulphate. However, only B-13/H cells expressed functional SULT activities towards SULT2B1 substrates DHEA, pregnenolone and 4 methylumbelliferone. Since liver progenitor cells are bi-potential and also form cholangiocytes, we therefore hypothesised that B-13 cells express a cholangiocyte-like SULT profile. To test this hypothesis, the expression of SULTs was examined in liver by RT-PCR and immunohistochemistry. SULT2B1 - but not SULT1A1 - was determined to be expressed in both rat and human cholangiocytes. Since 1'-hydroxyestragole exposure readily produced DNA injury in B-13/H cells, these data suggest that cholangiocarcinomas generated in rats fed estragole may be dependent, in part, on SULT2B1 activation of the 1'-hydroxyestragole metabolite.
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Affiliation(s)
- Philip M Probert
- Institute Cellular Medicine, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - Jeremy M Palmer
- Institute Cellular Medicine, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - Wasma Alhusainy
- Division of Toxicology, Wageningen University, Tuinlaan 5, 6703HE Wageningen, The Netherlands
| | - Aimen O Amer
- Institute Cellular Medicine, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - Ivonne M C M Rietjens
- Division of Toxicology, Wageningen University, Tuinlaan 5, 6703HE Wageningen, The Netherlands
| | - Steven A White
- Institute Cellular Medicine, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - David E Jones
- Institute Cellular Medicine, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - Matthew C Wright
- Institute Cellular Medicine, Newcastle University, Newcastle Upon Tyne, United Kingdom.
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Udroiu I, Sgura A, Vignoli L, Bologna MA, D'Amen M, Salvi D, Ruzza A, Antoccia A, Tanzarella C. Micronucleus test on Triturus carnifex as a tool for environmental biomonitoring. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2015; 56:412-417. [PMID: 25263003 DOI: 10.1002/em.21914] [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: 05/02/2014] [Revised: 09/10/2014] [Accepted: 09/11/2014] [Indexed: 06/03/2023]
Abstract
The amphibian micronucleus test has been widely used during the last 30 years to test the genotoxic properties of several chemicals and as a tool for ecogenotoxic monitoring. The vast majority of these studies were performed on peripheral blood of urodelan larvae and anuran tadpoles and to a lesser extent adults were also used. In this study, we developed protocols for measuring micronuclei in adult shed skin cells and larval gill cells of the Italian crested newt (Triturus carnifex). Amphibians were collected from ponds in two protected areas in Italy that differed in their radon content. Twenty-three adult newts and 31 larvae were captured from the radon-rich pond, while 20 adults and 27 larvae were taken from the radon-free site. The animals were brought to the laboratory and the micronucleus test was performed on peripheral blood and shed skins taken from the adults and on larval gills. Samples from the radon-rich site showed micronucleus frequencies higher than those from the radon-free site and the difference was statistically significant in gill cells (P < 0.00001). Moreover, the larval gills seem to be more sensitive than the adult tissues. This method represents an easy (and noninvasive in the case of the shed skin) application of the micronucleus assay that can be useful for environmental studies in situ.
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Affiliation(s)
- I Udroiu
- Dipartimento di Scienze, Università "Roma Tre,", Rome, Italy
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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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Probert PME, Chung GW, Cockell SJ, Agius L, Mosesso P, White SA, Oakley F, Brown CDA, Wright MC. Utility of B-13 progenitor-derived hepatocytes in hepatotoxicity and genotoxicity studies. Toxicol Sci 2013; 137:350-70. [PMID: 24235770 PMCID: PMC3908725 DOI: 10.1093/toxsci/kft258] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
AR42J-B-13 (B-13) cells form hepatocyte-like (B-13/H) cells in response to glucocorticoid treatment. To establish its utility in toxicity and genotoxicity screening, cytochrome P450 (CYP) induction, susceptibility to toxins, and transporter gene expression were examined. Conversion to B-13/H cells resulted in expression of male-specific CYP2C11 and sensitivity to methapyrilene. B-13/H cells constitutively expressed CYP1A, induced expression in response to an aryl hydrocarbon receptor agonist, and activated benzo[α]pyrene to a DNA-damaging species. Functional CYP1A2 was not expressed due to deletions in the Cyp1a2 gene. A B-13 cell line stably expressing the human CYP1A2 was therefore engineered (B-13−TR/h1A2) and the derived B-13/H cells expressed metabolically functional CYP1A2. Treatment with the cooked food mutagen 2-amino-1-methyl-6-phenylimidazo(4,5-b)pyridine resulted in a dose-dependent increase in DNA damage. B-13/H cells expressed constitutive androstane receptor (CAR) and induced CYP2B1 mRNA levels in response to classical CAR activators. However, translation to functional CYP2B1 protein was low and increased minimally by CAR activator treatment. B-13/H cells expressed high levels of pregnane X-receptor (PXR) and induced CYP3A1 in response to classical PXR activators. CYP3A genes were inducible, functional, and activated aflatoxin B1 to a DNA-damaging species. All 23 major hepatic transporters were induced when B-13 cells were converted to B-13/H cells, although in many cases, levels remained below those present in adult rat liver. However, bile salt export pump, Abcb1b, multidrug resistance-associated protein, and breast cancer resistance protein transporters were functional in B-13/H cells. These data demonstrate that the B-13 cell generates hepatocyte-like cells with functional drug metabolism and transporter activities, which can alone—or in a humanized form—be used to screen for hepatotoxic and genotoxic endpoints in vitro.
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Angeletti D, Sebbio C, Carere C, Cimmaruta R, Nascetti G, Pepe G, Mosesso P. Terrestrial gastropods (Helix spp) as sentinels of primary DNA damage for biomonitoring purposes: a validation study. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2013; 54:204-212. [PMID: 23444166 DOI: 10.1002/em.21766] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Revised: 01/18/2013] [Accepted: 01/18/2013] [Indexed: 06/01/2023]
Abstract
We validated the alkaline comet assay in two species of land snail (Helix aspersa and Helix vermiculata) to test their suitability as sentinels for primary DNA damage in polluted environments. The study was conducted under the framework of a biomonitoring program for a power station in Central Italy that had recently been converted from oil to coal-fired plant. After optimizing test conditions, the comet assay was used to measure the % Tail DNA induced by in vitro exposure of hemocytes to different concentrations of a reactive oxygen species (H2 O2 ). The treatment induced significant increases in this parameter with a concentration effect, indicating the effectiveness of the assay in snail hemocytes. After evaluating possible differences between the two species, we sampled them in three field sites at different distances from the power station, and in two reference sites assumed to have low or no levels of pollution. No species differences emerged. Percent Tail DNA values in snails from the sites near the power station were higher than those from control sites. An inverse correlation emerged between % Tail DNA and distance from the power station, suggesting that the primary DNA damage decreased as distance increased away from the pollution source. Detection of a gradient of heavy metal concentration in snail tissues suggests that these pollutants are a potential cause of the observed pattern. The comet assay appears to be a suitable assay and Helix spp. populations suitable sentinels to detect the genotoxic impact of pollutants.
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Affiliation(s)
- Dario Angeletti
- Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, Italy.
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