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Ye C, Guo H, Wei Y, Zhou S, Zhang S, Li J, Cui J, Wu D. K 2Cr 2O 7-induced DNA damage in HT1080 cells: Electrochemical signal response mechanism. Int J Biol Macromol 2024; 261:129629. [PMID: 38266843 DOI: 10.1016/j.ijbiomac.2024.129629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 12/02/2023] [Accepted: 12/22/2023] [Indexed: 01/26/2024]
Abstract
The existing DNA damage detection technology cannot meet the current detection requirements. It is critical to build new methods and discover novel biomarkers. In this study, alkaline comet and 8-OHDG ELISA assays were used to identify DNA damage in HT-1080 cells exposed to K2Cr2O7, and electrochemical behaviors of HT-1080 cells with DNA damage was studied. With an increase in K2Cr2O7 exposure time, two electrochemical signals from HT-1080 cells at 0.69 and 1.01 V steadily grew before decreasing after reaching their highest values. The electrochemical signal's initial response time and peak time decreased as the concentration of K2Cr2O7 increased. The duration of the high dose group was 0.5 and 1 h, while the low dose group was 1.5 and 6 h. Western blotting analysis revealed that DNA damage increased the expression of proteins involved in catabolism and de novo purine synthesis, particularly de novo purine synthesis. Expressions of PRPP amidotransferase, IMPDH, and ADA were all higher than those of ADSS, XOD, and GDA, which resulted in larger concentrations of hypoxanthine, guanine, and xanthine, and in turn improved electrochemical signaling. These findings suggest that intracellular purine identified by linear scan voltammetry is predicted to evolve as a marker of early DNA damage.
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Affiliation(s)
- Cai Ye
- College of Pharmacy, Jiamusi University, Jiamusi, Heilongjiang 154007, PR China; Heilongjiang Provincial Key Laboratory of New Drug Development and Pharmacotoxicological Evaluation, Jiamusi University, Jiamusi, Heilongjiang 154007, PR China
| | - Haohuan Guo
- College of Pharmacy, Jiamusi University, Jiamusi, Heilongjiang 154007, PR China
| | - Ying Wei
- Heilongjiang Provincial Key Laboratory of New Drug Development and Pharmacotoxicological Evaluation, Jiamusi University, Jiamusi, Heilongjiang 154007, PR China
| | - Shi Zhou
- College of Pharmacy, Jiamusi University, Jiamusi, Heilongjiang 154007, PR China
| | - Simiao Zhang
- College of Pharmacy, Jiamusi University, Jiamusi, Heilongjiang 154007, PR China
| | - Jinlian Li
- College of Pharmacy, Jiamusi University, Jiamusi, Heilongjiang 154007, PR China; Heilongjiang Provincial Key Laboratory of New Drug Development and Pharmacotoxicological Evaluation, Jiamusi University, Jiamusi, Heilongjiang 154007, PR China.
| | - Jiwen Cui
- College of Pharmacy, Jiamusi University, Jiamusi, Heilongjiang 154007, PR China; Heilongjiang Provincial Key Laboratory of New Drug Development and Pharmacotoxicological Evaluation, Jiamusi University, Jiamusi, Heilongjiang 154007, PR China.
| | - Dongmei Wu
- College of Pharmacy, Jiamusi University, Jiamusi, Heilongjiang 154007, PR China; Heilongjiang Provincial Key Laboratory of New Drug Development and Pharmacotoxicological Evaluation, Jiamusi University, Jiamusi, Heilongjiang 154007, PR China.
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Silva JGD, Chagas CA, Souza TGDS, Araújo MCD, Araújo LCAD, Santos AMM, Sá RADQCD, Alves RBDO, Rodrigues RHA, Silva HPD, Malafaia G, Bezerra RDS, Oliveira MBMD. Using structural equation modeling to assess the genotoxic and mutagenic effects of heavy metal contamination in the freshwater ecosystems: A study involving Oreochromis niloticus in an urban river. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 913:169529. [PMID: 38160826 DOI: 10.1016/j.scitotenv.2023.169529] [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: 08/12/2023] [Revised: 12/06/2023] [Accepted: 12/18/2023] [Indexed: 01/03/2024]
Abstract
Chemical pollutants represent a leading problem for aquatic ecosystems, as they can induce genetic, biochemical, and physiological changes in the species of these ecosystems, thus compromising their adaptability and survival. The Capibaribe River runs through the state of Pernambuco, located in Northeastern Brazil, and passes through areas of agricultural cultivation, densely populated cities, and industrial centers, primarily textiles. Despite its importance, few ecotoxicological studies have been conducted on its environment, and knowledge about pollution patterns and their effects on its biota is still being determined. The objective of this study was to evaluate the water quality and the damage supposed to be caused by pollutants on the DNA specimens of Nile tilapia (Oreochromis niloticus) obtained from seven strategic points of Capibaribe. Tilapia specimens and water were collected during the rainy and dry seasons from 2015 to 2017. The following characteristics were analyzed: physicochemical (six), metal concentration (seven), local pluviosity, micronuclei, and comet assay. The physicochemical and heavy metal analyses were exploratory, whereas the ecotoxicological analyses were hypothetical. To verify this hypothesis, we compared the groups of fish collected to the results of the micronuclei test and comet assay. We created a Structural Equation Model (SEM) to determine how each metal's micronuclei variables, damage index, pluviosity, and concentration were related. Our results demonstrated that the highest values for markers of genetic damage were detected at points with the highest heavy metal concentrations, especially iron, zinc, manganese, chromium, and cadmium. The SEM demonstrated that metals could explain the findings of the genotoxicity markers. Moreover, other pollutants, such as pesticides, should be considered, mainly where the river passes through rural areas. The results presented here demonstrate that the Capibaribe River has different degrees of contamination and confirm our hypothesis.
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Affiliation(s)
- Jordany Gomes da Silva
- Laboratório de Biologia Molecular, Departamento de Bioquímica, Universidade Federal de Pernambuco - UFPE, Recife, PE, Brazil.
| | - Cristiano Aparecido Chagas
- Laboratório de Ciências Morfológicas e Moleculares, Universidade Federal de Pernambuco (UFPE - CAV), Vitória de Santo Antão, Pernambuco, Brazil.
| | | | - Marlyete Chagas de Araújo
- Laboratório de Enzimologia, Departamento de Bioquímica, Universidade Federal de Pernambuco - UFPE, Recife, PE, Brazil
| | | | - André Maurício Melo Santos
- Laboratório de Biodiversidade, Universidade Federal de Pernambuco (UFPE - CAV), Vitória de Santo Antão, PE, Brazil.
| | | | | | - Rosner Henrique Alves Rodrigues
- Instituto para Redução de Riscos e Desastres de Pernambuco -IRRD, Universidade Federal Rural de Pernambuco - UFRPE, Núcleo de Geoprocessamento e Sensoriamento Remoto - GEOSERE, Recife, PE, Brazil
| | - Hernande Pereira da Silva
- Instituto para Redução de Riscos e Desastres - IRRD/UFRPE, Núcleo de Geoprocessamento e Sensoriamento Remoto - GEOSERE/UFRPE, Recife, PE, Brazil.
| | - Guilherme Malafaia
- Laboratory of Toxicology Applied to the Environment, Goiano Federal Institute, Urutaí Campus, Rodovia Geraldo Silva Nascimento, 2.5 km, Zona Rural, Urutaí, GO, Brazil.
| | - Ranilson de Souza Bezerra
- Universidade Federal de Pernambuco - UFPE, Centro de Biociências, Departamento de Bioquímica, Laboratório de Enzimologia, Cidade Universitária, Recife, PE, Brazil.
| | - Maria Betânia Melo de Oliveira
- Laboratório de Biologia Molecular, Departamento de Bioquímica, Universidade Federal de Pernambuco - UFPE, Recife, PE, Brazil.
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3
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Khanna K, Kohli SK, Ohri P, Bhardwaj R, Ahmad P. Agroecotoxicological Aspect of Cd in Soil–Plant System: Uptake, Translocation and Amelioration Strategies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:30908-30934. [PMID: 0 DOI: 10.1007/s11356-021-18232-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 12/16/2021] [Indexed: 05/27/2023]
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4
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Li Y, Wang WX. Integrated transcriptomics and proteomics revealed the distinct toxicological effects of multi-metal contamination on oysters. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 284:117533. [PMID: 34261227 DOI: 10.1016/j.envpol.2021.117533] [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: 04/22/2021] [Revised: 05/24/2021] [Accepted: 06/01/2021] [Indexed: 06/13/2023]
Abstract
The Pearl River Estuary (PRE) is the largest estuary in southern China and under high metal stress. In the present study, we employed an integrated method of transcriptomics and proteomics to investigate the ecotoxicological effects of trace metals on the Hong Kong oyster Crassostrea hongkongensis. Three oyster populations with distinct spatial distributions of metals were sampled, including the Control (Station QA, the lowest metal levels), the High Cd (Station JZ, the highest Cd), and the High Zn-Cu-Cr-Ni (Station LFS, with the highest levels of zinc, copper, chromium, and nickel). Dominant metals in oysters were differentiated by principal component analysis (PCA), and theirgene and protein profiles were studied using RNA-seq and iTRAQ techniques. Of the 2250 proteins identified at both protein and RNA levels, 70 proteins exhibited differential expressions in response to metal stress in oysters from the two contaminated stations. There were 8 proteins altered at both stations, with the potential effects on mitochondria and endoplasmic reticulum by Ag. The genotoxicity, including impaired DNA replication and transcription, was specifically observed in the High Cd oysters with the dominating influence of Cd. The structural components (cytoskeleton and chromosome-associated proteins) were impaired by the over-accumulated Cu, Zn, Cr, and Ni at Station LFS. However, enhanced tRNA biogenesis and exosome activity might help the oysters to alleviate the toxicities resulting from their exposure to these metals. Our study provided comprehensive information on the molecular changes in oysters at both protein and RNA levels in responding to multi-levels of trace metal stress.
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Affiliation(s)
- Yunlong Li
- Division of Life Science and Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), The Hong Kong University of Science and Technology, Kowloon, Hong Kong, China; School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Wen-Xiong Wang
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China; Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, China.
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5
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Kheirallah DAM, El-Samad LM, Mokhamer EHM, Abdul-Aziz KK, Toto NAH. DNA damage and oogenesis anomalies in Pimelia latreillei (Coleoptera: Tenebrionidae) induced by heavy metals soil pollution. Toxicol Ind Health 2020; 35:688-702. [PMID: 31818244 DOI: 10.1177/0748233719893200] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The present study used Pimelia latreillei as a biomonitoring insect for heavy metals soil pollution in a populated industrial area at Zawya Abd El-Qader, Alexandria, Egypt. Comet assay and histological analysis were applied to evaluate the potential risk of heavy metals. X-ray analysis of the soil samples collected from the polluted site revealed significantly increased metal percentages compared with the reference site. Moreover, a significant increase in metal percentages was detected by the X-ray analysis in insect ovaries collected from the polluted site. The Tail DNA length was significantly greater in the insects collected from the polluted site-47.6% compared with 11.4% at the reference site. Pronounced disruptions in oogenesis were observed through histological and ultrastructure investigations in insects collected from the polluted site. The study summarized the potential utility of insect biomonitors in predicting the effect of heavy metals soil pollution on occupational health.
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Vernon EL, Bean TP, Jha AN. Assessing relative biomarker responses in marine and freshwater bivalve molluscs following exposure to phosphorus 32 ( 32P): Application of genotoxicological and molecular biomarkers. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2020; 213:106120. [PMID: 31783294 DOI: 10.1016/j.jenvrad.2019.106120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 11/12/2019] [Accepted: 11/19/2019] [Indexed: 06/10/2023]
Abstract
Anthropogenic radionuclides can enter water bodies through accidental or controlled discharges. In order to assess their potential impact, understanding the link between exposure, tissue specific bioaccumulation and radiation dose rate, to biological or biomarker responses in aquatic biota is required. Adopting an integrated, multi-biomarker, multi-species approach, we have investigated potential biological responses induced by short-lived radionuclide, phosphorus-32 (32P, radiophosphorus) in two ecologically important mussel species, the freshwater Dreissena polymorpha (DP) and marine Mytilus galloprovincialis (MG). Adult individuals were exposed to 32P for 10 days, to acquire nominal whole-body average dose rates of 0.10, 1 and 10 mGy d-1, which encompass a screening value of 10 μGy h-1 (0.24 mGy d-1), in accordance with the ERICA tool. Following exposure, a suite of genotoxic biomarkers (DNA damage, γ-H2AX induction and micronucleus [MN] formation) were measured in gill and digestive gland tissues, along with transcriptional expression of selected stress-related genes in both the species (i.e. hsp70/90, sod, cat and gst). Our results demonstrate the relationship between tissue specific dosimetry, where 32P induced a dose-dependent increase, and biological responses independent of species. Gene expression analysis revealed little significant variation across species or tissues. Overall, MG appeared to be more sensitive to short-term damage (i.e. high DNA damage and γ-H2AX induction), particularly in digestive gland. This study contributes to limited knowledge on the transfer and biological impact of radionuclides within differing aquatic systems on a tissue specific level, aiding the development of adequate management and protective strategies.
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Affiliation(s)
- Emily L Vernon
- School of Biological and Marine Sciences, University of Plymouth, Plymouth, PL4 8AA, UK
| | - Tim P Bean
- Cefas Weymouth Laboratory, Barrack Road, The Nothe, Weymouth, Dorset, DT4 8UB, UK
| | - Awadhesh N Jha
- School of Biological and Marine Sciences, University of Plymouth, Plymouth, PL4 8AA, UK.
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Wilczek G, Surmiak K, Wawszczak B, Sajewicz M, Kowalska T, Sindera P, Wiśniewska K, Szulinska E. Effect of long-term cadmium and copper intoxication on the efficiency of ampullate silk glands in false black widow Steatoda grossa (Theridiidae) spiders. Comp Biochem Physiol C Toxicol Pharmacol 2019; 224:108564. [PMID: 31276814 DOI: 10.1016/j.cbpc.2019.108564] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 06/25/2019] [Accepted: 06/29/2019] [Indexed: 11/19/2022]
Abstract
The aim of the study was to compare cellular effects of xenobiotic cadmium and biogenic copper in ampullate silk glands of false black widow Steatoda grossa spider after long-term exposure via ingestion under laboratory conditions. Both the level of selected detoxification parameters (glutathione S-transferase, catalase, and the level of total antioxidant capacity) and degree of genotoxic changes (comet assay) were determined in the silk glands. Additionally the contents of selected amino acids (L-Ala, L-Pro, L-His, L-Phe, DL-Ile, and DL-Asn) in the hunting webs produced by spiders of this species were assessed. The ability of S. grossa females to accumulate cadmium was higher than that for copper. Long-term exposure of spiders to copper did not change the level of detoxification parameters, and the level of DNA damage in the cells of ampullate silk glands was also low. Cadmium had a stronger prooxidative and genotoxic effect than copper in the cells of the analyzed silk glands. However, regardless of the type of metal used, no significant changes in the level of amino acids in silk were found. The obtained results confirmed the effectiveness of metal neutralization mechanisms in the body of the studied spider species, which results in the protection of the function of ampullate silk glands.
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Affiliation(s)
- Grażyna Wilczek
- Department of Animal Physiology and Ecotoxicology, Faculty of Biology and Environmental Protection, University of Silesia, Bankowa 9, Katowice 40-007, Poland.
| | - Kinga Surmiak
- Department of Animal Physiology and Ecotoxicology, Faculty of Biology and Environmental Protection, University of Silesia, Bankowa 9, Katowice 40-007, Poland
| | - Beata Wawszczak
- Department of General Chemistry and Chromatography, Institute of Chemistry, University of Silesia, Szkolna 9, Katowice 40-006, Poland
| | - Mieczysław Sajewicz
- Department of General Chemistry and Chromatography, Institute of Chemistry, University of Silesia, Szkolna 9, Katowice 40-006, Poland
| | - Teresa Kowalska
- Department of General Chemistry and Chromatography, Institute of Chemistry, University of Silesia, Szkolna 9, Katowice 40-006, Poland
| | - Piotr Sindera
- Department of Animal Physiology and Ecotoxicology, Faculty of Biology and Environmental Protection, University of Silesia, Bankowa 9, Katowice 40-007, Poland
| | - Kamila Wiśniewska
- Department of Animal Physiology and Ecotoxicology, Faculty of Biology and Environmental Protection, University of Silesia, Bankowa 9, Katowice 40-007, Poland
| | - Elżbieta Szulinska
- Department of Animal Physiology and Ecotoxicology, Faculty of Biology and Environmental Protection, University of Silesia, Bankowa 9, Katowice 40-007, Poland
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Ren X, Wang X, Liu P, Li J. Bioaccumulation and physiological responses in juvenile Marsupenaeus japonicus exposed to cadmium. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 214:105255. [PMID: 31325645 DOI: 10.1016/j.aquatox.2019.105255] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 07/12/2019] [Accepted: 07/13/2019] [Indexed: 06/10/2023]
Abstract
The heavy metal cadmium readily accumulates in organisms, causing damage. In this study, juvenile marine shrimp Marsupenaeus japonicus were exposed to cadmium (Cd2+; 5, 50 and 500 μg L-1). Cd accumulation and antioxidant-related indices were determined, and damage to biomolecules was assessed, after 24, 48 and 96 h. Cd bioaccumulation in M. japonicus increased with exposure time and concentration, which reached the highest value at 96 h. The data showed that 5, 50 and 500 μg L-1 Cd increased glutathione (GSH) content and the activities of superoxide dismutase (SOD) and glutathione S-transferase (GST) in a Cd-dose-dependent manner, but 5 and 50 μg L-1 Cd had no effect on caspase-3 activity. The expression levels of SOD, GST, heat shock protein 70 (HSP70), metallothionein (MT), p53 and caspase-3 genes were rapidly increased after 50 and 500 μg L-1 Cd exposure, and remained at a significantly higher level than in the control after 96 h of exposure. After exposure to 5, 50 and 500 μg L-1 Cd, F-value (the ratio between double-stranded DNA and total DNA) remained high at 24 h, however, as the exposure time increased, the F-value decreased in a dose-dependent manner. An increase in malondialdehyde content was also observed following exposure to 50 and 500 μg L-1 Cd. Our data suggest that Cd induces oxidative stress, molecular damage and apoptosis in juvenile M. japonicus in a concentration- and time-dependent manner.
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Affiliation(s)
- Xianyun Ren
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, PR China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, PR China
| | - Xiang Wang
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, PR China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, PR China; The College of Fisheries, Ocean University of China, Qingdao, PR China
| | - Ping Liu
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, PR China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, PR China
| | - Jian Li
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, PR China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, PR China.
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Vernon EL, Jha AN. Assessing relative sensitivity of marine and freshwater bivalves following exposure to copper: Application of classical and novel genotoxicological biomarkers. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2019; 842:60-71. [DOI: 10.1016/j.mrgentox.2019.01.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 01/15/2019] [Accepted: 01/17/2019] [Indexed: 12/20/2022]
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10
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Queiroz EC, da Silva BF, Salla RV, Ramos JPL, Gnocchi KG, Chippari-Gomes AR. Genotoxic Damages and Bioaccumulation of Cadmium in Geophagus Brasiliensis (Quoy & Gaimard, 1824). BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2019; 102:181-185. [PMID: 30631894 DOI: 10.1007/s00128-018-2524-0] [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: 03/26/2018] [Accepted: 12/13/2018] [Indexed: 06/09/2023]
Abstract
The toxic effects of cadmium (Cd) in Geophagus brasiliensis was investigated in the present study. For this, 32 specimens of G. brasiliensis were exposed in individual aquaria to Cd concentrations (0.00, 0.01, 0.07, and 0.67 mg/L) for 14 days. The micronuclei test did not detect the genotoxic damage at the studied concentrations and time of exposure. However, the comet assay proved to be more efficient, as DNA damage was found in the animals exposed to the higher Cd concentrations. Finally, exposure of G. brasiliensis to Cd was associated with Cd accumulation in the gills, while only the animals exposed to 0.67 mg/L of Cd exhibited muscle accumulation. These results demonstrate that Cd concentrations over 0.07 mg/L caused genotoxic damage, as well as Cd accumulation in G. brasiliensis individuals after a 14 days exposure.
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Affiliation(s)
- Emanuelle Carneiro Queiroz
- Laboratório de Ictiologia Aplicada (LAB PEIXE), Universidade Vila Velha -UVV, Rua Comissário José Dantas de Melo, n o 21, Boa Vista, Vila Velha, ES, 29102-770, Brazil
| | - Bruno Ferreira da Silva
- InstitutoAplysia, Rua Júlia Lacourt Penha, n o 335, Jardim Camburi, Vitoria, ES, 29090-210, Brazil
| | - Rômulo Victor Salla
- Laboratório de Ictiologia Aplicada (LAB PEIXE), Universidade Vila Velha -UVV, Rua Comissário José Dantas de Melo, n o 21, Boa Vista, Vila Velha, ES, 29102-770, Brazil
| | - Jean Pierre Louzada Ramos
- Laboratório de Ictiologia Aplicada (LAB PEIXE), Universidade Vila Velha -UVV, Rua Comissário José Dantas de Melo, n o 21, Boa Vista, Vila Velha, ES, 29102-770, Brazil
| | - Karla Giavarini Gnocchi
- Laboratório de Ictiologia Aplicada (LAB PEIXE), Universidade Vila Velha -UVV, Rua Comissário José Dantas de Melo, n o 21, Boa Vista, Vila Velha, ES, 29102-770, Brazil
| | - Adriana Regina Chippari-Gomes
- Laboratório de Ictiologia Aplicada (LAB PEIXE), Universidade Vila Velha -UVV, Rua Comissário José Dantas de Melo, n o 21, Boa Vista, Vila Velha, ES, 29102-770, Brazil.
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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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12
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Biochemical mechanisms of free-radical damage to the nuclear genome by cadmium. UKRAINIAN BIOCHEMICAL JOURNAL 2018. [DOI: 10.15407/ubj90.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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13
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Sarker S, Vashistha D, Saha Sarker M, Sarkar A. DNA damage in marine rock oyster (Saccostrea Cucullata) exposed to environmentally available PAHs and heavy metals along the Arabian Sea coast. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 151:132-143. [PMID: 29331918 DOI: 10.1016/j.ecoenv.2018.01.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 12/24/2017] [Accepted: 01/03/2018] [Indexed: 06/07/2023]
Abstract
Molecular biomarkers are used world wide for quick assessment of the immediate effect of environmental pollution on marine ecosystems. Recently, we evaluated oxidative stress responses of marine rock oyster, Saccostrea cucullata impacted due to polycyclic aromatic hydrocarbons (PAHs) accumulated in their tissues at a few sampling sites along the coast of Goa around the region of the Arabian sea coast, India (Sarkar et al., 2017). Using a combination of partial alkaline unwinding and comet assays, we now report a comprehensive study on the impairment of DNA integrity (DI) in S. cucullata due to exposure to environmentally available PAHs and also heavy metals (Pb, Cd, Cu, Fe and Mn) along the Arabian Sea coast, Goa, India exclusively around the entire coast of Goa. First, we determined significant correlation between DI in S. cucullata and the extent of exposure to and bioaccumulation of different PAH compounds including 2-3 aromatic ring PAHs (R2, 0.95), 4-6 aromatic ring PAHs (R2, 0.85), oxygenated-PAHs (oxy-PAHs, R2, 0.84) and total PAHs (t-PAHs, R2, 0.98). Second, we observed dose-dependent decrease in DI in S. cucullata with increasing concentrations of different PAH components in oyster tissues. We substantiated our field observations with appropriate laboratory controls using benzo[a]pyrene (BaP). Third, we performed stepwise multiple regression analyses of different water quality parameters including pH, salinity, temperature, dissolved oxygen (DO), biochemical oxygen demand (BOD), nitrite (NO2), nitrate (NO3), phosphate (PO4), turbidity and also t-PAH-biota, t-PAH-water with DI as the dependent variable. Among all these parameters, only four parameters such as t-PAH-biota in combination with DO, BOD and NO2 showed significant correlation (R¯2 = 0.95) with loss in DI in S. cucullata. Based on these results, we created a map indicating the percentage of DNA damage in S. cucullata exposed to PAHs and heavy metals at each sampling location along the west coast of India around Goa, India.
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Affiliation(s)
- Subhodeep Sarker
- Discipline of Pharmacology, School of Medical Sciences, Sydney Medical School, The University of Sydney, Sydney, New South Wales 2006, Australia; Global Enviro-Care, Kevnem, Caranzalem, Goa 403002, India.
| | - Deepti Vashistha
- CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India; Global Enviro-Care, Kevnem, Caranzalem, Goa 403002, India
| | - Munmun Saha Sarker
- Global Enviro-Care, Kevnem, Caranzalem, Goa 403002, India; Rabindra Bharati University, Emerald Bower Campus, Kolkata 700050, India.
| | - A Sarkar
- CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India; Global Enviro-Care, Kevnem, Caranzalem, Goa 403002, India.
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Akpiri RU, Konya RS, Hodges NJ. Development of cultures of the marine sponge Hymeniacidon perleve for genotoxicity assessment using the alkaline comet assay. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2017; 36:3314-3323. [PMID: 28691780 DOI: 10.1002/etc.3907] [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: 11/21/2016] [Revised: 01/17/2017] [Accepted: 07/05/2017] [Indexed: 06/07/2023]
Abstract
Sponges are a potential alternative model species to bivalves in pollution biomonitoring and environmental risk assessment in the aquatic ecosystem. In the present study, a novel in vivo exposure sponge culture model was developed from field-collected and cryopreserved sponge (Hymeniacidon perleve) cells to investigate the genotoxic effects of environmentally relevant metals in the laboratory. Sponge cell aggregates were cultured and exposed to noncytotoxic concentrations (0-0.4 mg/L) of cadmium chloride, nickel chloride, and sodium dichromate as quantified by the reduction of 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and DNA-strand breaks assessed by the comet assay. Reactive oxygen species (ROS) formation was quantified by oxidation of 2',7'-dichlorofluorescin diacetate in sponge cell aggregates exposed to the same concentrations of Cd, Cr, and Ni. There was a statistically significant (p < 0.05) concentration-dependent increase in the level of DNA-strand breaks and ROS formation in all of the metals investigated. To the best of our knowledge, we have utilized for the first time the alkaline comet assay to detect DNA-strand breaks in marine sponge cells and demonstrated that exposure to noncytotoxic concentrations of Cd, Cr, and Ni for 12 h results in a concentration-dependent increase in DNA damage and levels of ROS production. In conclusion, we have developed a novel in vivo model based on culture of cryopreserved sponge cells that is compatible with the alkaline comet assay. Genotoxicity in marine sponges measured by the comet assay technique may be a useful tool for biomonitoring research and risk assessment in aquatic ecosystems. Environ Toxicol Chem 2017;36:3314-3323. © 2017 SETAC.
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Affiliation(s)
- Rachael U Akpiri
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Roseline S Konya
- Department of Animal and Environmental Biology, Faculty of Biological and Chemical Sciences, College of Natural and Applied Sciences, University of Port Harcourt, Rivers State, Nigeria
| | - Nikolas J Hodges
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom
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Zhang LJ, Li Y, Chen P, Li XM, Chen YG, Hang YY, Gong WJ. A study of genotoxicity and oxidative stress induced by mercuric chloride in the marine polychaete Perinereis aibuhitensis. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2017; 56:361-365. [PMID: 29126054 DOI: 10.1016/j.etap.2017.10.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 10/11/2017] [Accepted: 10/17/2017] [Indexed: 06/07/2023]
Abstract
The marine polychaete worm Perinereis aibuhitensis was used to study the genotoxic effects of mercuric chloride by means of the comet assay and micronucleus (MN) test. P. aibuhitensis was subjected in vivo to two different concentrations of mercuric chloride (0.05mgL-1 and 0.5mgL-1) for 96h. The comet assay of coelomocytes demonstrated that TailDNA% values increased with extended exposure to or increased concentrations of HgCl2 (p<0.01). The frequency of MNs was the highest in the treatment with 96h of exposure at all concentrations (p<0.01). The genotoxic effect of HgCl2 was both dose- and time-dependent in exposed P. aibuhitensis. The activities of the antioxidant enzymes, superoxide dismutase (SOD) and glutathione peroxidases (GPx) were also estimated. Significant variations in antioxidant enzyme activities depended on the sampling time and the concentrations of mercuric chloride. Compared with the control, the activities of the antioxidant enzymes (SOD and GPx) were elevated at the lower concentration of mercuric chloride (0.05mg L-1) (p<0.05) for shorter exposure periods (24h and 72h). At the higher concentration of mercury (0.5mgL-1), the activities of GPx and SOD were inhibited; no variation was observed. These results proved that the use of the comet assay and MN test in coelomocytes of P. aibuhitensis is appropriate for determining the levels of DNA damage and that P. aibuhitensis is a species that is sensitive to mercury pollutants. This species may be considered a suitable candidate for monitoring marine heavy metal pollution.
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Affiliation(s)
- Lai Jun Zhang
- College of Life Sciences and Ecology, Tropical Ocean College of Hainan, Sanya, 572022, Hainan Province, China.
| | - Yao Li
- Navigation College, Guangdong Ocean University, Zhanjiang 524025, Guangdong Province, China
| | - Pan Chen
- College of Life Sciences and Ecology, Tropical Ocean College of Hainan, Sanya, 572022, Hainan Province, China
| | - Xiao Mei Li
- College of Life Sciences and Ecology, Tropical Ocean College of Hainan, Sanya, 572022, Hainan Province, China
| | - Yong Gan Chen
- College of Life Sciences and Ecology, Tropical Ocean College of Hainan, Sanya, 572022, Hainan Province, China
| | - Yu Yu Hang
- College of Life Sciences and Ecology, Tropical Ocean College of Hainan, Sanya, 572022, Hainan Province, China
| | - Wei Jie Gong
- College of Life Sciences and Ecology, Tropical Ocean College of Hainan, Sanya, 572022, Hainan Province, China
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Sarkar A, Bhagat J, Saha Sarker M, Gaitonde DCS, Sarker S. Evaluation of the impact of bioaccumulation of PAH from the marine environment on DNA integrity and oxidative stress in marine rock oyster (Saccostrea cucullata) along the Arabian sea coast. ECOTOXICOLOGY (LONDON, ENGLAND) 2017; 26:1105-1116. [PMID: 28755287 DOI: 10.1007/s10646-017-1837-9] [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] [Accepted: 07/08/2017] [Indexed: 06/07/2023]
Abstract
Marine pollution due to oil spills is of great concern globally for their impact on the health of marine ecosystems. We assessed the genotoxic effects and oxidative stress due to genotoxic pollutants accumulated from the ambient marine environment in the tissues of marine rock oyster, Saccostrea cucullata along the Arabian Sea coast around Goa, India. The extent of DNA damage in S. cucullata was determined by comet assay as variation of comet parameter: mean % tail DNA along the coast with respect to that at the reference site (Tiracol, Goa, India). In addition, the oxidative stress responses of rock oysters exposed to marine pollutants such as polycyclic aromatic hydrocarbons (PAHs) were assessed as a function of variation in antioxidant enzyme activities such as glutathione-s-transferase (GST), catalase (CAT) and superoxide dismutase (SOD) along the coast. Spearman correlation analysis showed significant correlation between different components of PAHs (viz., 2-3-PAH, 4-6-PAH and oxy-PAH) in the tissues of the rock oysters and the antioxidant enzyme activities. The antioxidant enzyme activities in S. cucullata increased with increasing concentrations of PAHs in tissues in the following order of sampling sites: Tiracol < Arambol < Betul < Velsao. Among the PAHs, oxy-PAH was found to be most predominant in causing DNA damage in S. cucullata. These results provide an insight into environmental genotoxicity and oxidative stress induced by PAHs along the Arabian Sea coast, India.
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Affiliation(s)
- A Sarkar
- Chemical Oceanographic Division, CSIR-National Institute of Oceanography, Dona Paula, Goa, 403004, India.
- Global Enviro-Care, Caranzalem, Kevnem, Goa, 403002, India.
| | - Jacky Bhagat
- Chemical Oceanographic Division, CSIR-National Institute of Oceanography, Dona Paula, Goa, 403004, India
| | - Munmun Saha Sarker
- Global Enviro-Care, Caranzalem, Kevnem, Goa, 403002, India
- Rabindra Bharati University, Emerald Bower Campus, Kolkata, West Bengal, 700 050, India
| | - Dipak C S Gaitonde
- Global Enviro-Care, Caranzalem, Kevnem, Goa, 403002, India
- Department of Environmental Science, Government Polytechnic College, Panaji, Goa, 403001, India
| | - Subhodeep Sarker
- Clinical Division of Fish Medicine, University of Veterinary Medicine, Veterinaerplatz 1, 1210, Vienna, Austria.
- Discipline of Pharmacology, School of Medical Sciences, Sydney Medical School, The University of Sydney, Sydney, New South Wales, 2006, Australia.
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17
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Cardoso DN, Silva ARR, Cruz A, Lourenço J, Neves J, Malheiro C, Mendo S, Soares AMVM, Loureiro S. The comet assay in Folsomia candida: A suitable approach to assess genotoxicity in collembolans. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2017; 36:2514-2520. [PMID: 28411389 DOI: 10.1002/etc.3795] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 12/29/2016] [Accepted: 03/13/2017] [Indexed: 06/07/2023]
Abstract
The present study shows the comet assay technique being successfully applied for the first time to one of the most widely used soil organisms in standardized ecotoxicological tests, Folsomia candida, providing a step forward in assessing the genotoxicity induced by xenobiotics. Because collembolans have a high content of chitin, a new methodology was developed in which the heads of the collembolans were separated from the rest of the body, allowing the hemolymph to leak out. This procedure allows the cells to be released, and after lysis the genetic material is available for the comet assay. Among other key procedures, the use of 30 organisms (20- to 22-d-old adults) per replicate and the correct amount of cells with genetic material (translated as 10 μL of suspension) applied on the agarose gel were determinants for the success of the results obtained. The methodology was validated by exposing F. candida to a representative metallic element (cadmium) and a representative of organophosphates, the insecticide dimethoate, for a shorter time period of 10 d, compared with the 28 d for the International Organization for Standardization 11267 method. Within this method, the relatively low percentage of DNA damage (30%) observed in controls and the significant increase in terms of percentage of DNA damage for almost all the concentrations of dimethoate and Cd (reaching 52% and 56% of damage in the highest concentrations, respectively) confirmed the genotoxic effect of both compounds and validated this technique. The comet assay proved to be a sensitive technique to detect DNA strand breaks in collembolans' cells. Environ Toxicol Chem 2017;36:2514-2520. © 2017 SETAC.
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Affiliation(s)
- Diogo N Cardoso
- Department of Biology & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal
| | - Ana Rita R Silva
- Department of Biology & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal
| | - Andreia Cruz
- Department of Biology & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal
| | - Joana Lourenço
- Department of Biology & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal
| | - Joana Neves
- Department of Biology & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal
| | - Catarina Malheiro
- Department of Biology & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal
| | - Sónia Mendo
- Department of Biology & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal
| | - Amadeu M V M Soares
- Department of Biology & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal
| | - Susana Loureiro
- Department of Biology & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal
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Pavlaki MD, Araújo MJ, Cardoso DN, Silva ARR, Cruz A, Mendo S, Soares AMVM, Calado R, Loureiro S. Ecotoxicity and genotoxicity of cadmium in different marine trophic levels. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 215:203-212. [PMID: 27203468 DOI: 10.1016/j.envpol.2016.05.010] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 05/02/2016] [Accepted: 05/04/2016] [Indexed: 06/05/2023]
Abstract
Cadmium ecotoxicity and genotoxicity was assessed in three representative species of different trophic levels of marine ecosystems - the calanoid copepod Acartia tonsa, the decapod shrimp, Palaemon varians and the pleuronectiform fish Solea senegalensis. Ecotoxicity endpoints assessed in this study were adult survival, hatching success and larval development ratio (LDR) for A. tonsa, survival of the first larval stage (zoea I) and post-larvae of P. varians, egg and larvae survival, as well as the presence of malformations in the larval stage of S. senegalensis. In vivo genotoxicity was assessed on adult A. tonsa, the larval and postlarval stage of P. varians and newly hatched larvae of S. senegalensis using the comet assay. Results showed that the highest sensitivity to cadmium is displayed by A. tonsa, with the most sensitive endpoint being the LDR of nauplii to copepodites. Sole eggs displayed the highest tolerance to cadmium compared to the other endpoints evaluated for all tested species. Recorded cadmium toxicity was (by increasing order): S. senegalensis eggs < P. varians post-larvae < P. varians zoea I < S. senegalensis larvae < A. tonsa eggs < A. tonsa LDR. DNA damage to all species exposed to cadmium increased with increasing concentrations. Overall, understanding cadmium chemical speciation is paramount to reliably evaluate the effects of this metal in marine ecosystems. Cadmium is genotoxic to all three species tested and therefore may differentially impact individuals and populations of marine taxa. As A. tonsa was the most sensitive species and occupies a lower trophic level, it is likely that cadmium contamination may trigger bottom-up cascading effects in marine trophic interactions.
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Affiliation(s)
- Maria D Pavlaki
- Department of Biology & CESAM - Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Mário J Araújo
- Department of Biology & CESAM - Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Diogo N Cardoso
- Department of Biology & CESAM - Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Ana Rita R Silva
- Department of Biology & CESAM - Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Andreia Cruz
- Department of Biology & CESAM - Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Sónia Mendo
- Department of Biology & CESAM - Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Amadeu M V M Soares
- Department of Biology & CESAM - Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Ricardo Calado
- Department of Biology & CESAM - Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Susana Loureiro
- Department of Biology & CESAM - Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
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19
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Ototoxicity of Divalent Metals. Neurotox Res 2016; 30:268-82. [DOI: 10.1007/s12640-016-9627-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 04/21/2016] [Accepted: 04/22/2016] [Indexed: 12/16/2022]
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20
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Sarker S, Desai SR, Verlecar XN, Sarker MS, Sarkar A. Mercury-induced genotoxicity in marine diatom (Chaetoceros tenuissimus). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:2770-2777. [PMID: 26446733 DOI: 10.1007/s11356-015-5505-4] [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: 03/17/2015] [Accepted: 09/24/2015] [Indexed: 06/05/2023]
Abstract
In this paper, we present an evaluation of genotoxic responses in marine diatom, Chaetoceros tenuissimus, isolated from Kandla Creek (lat 23.03° N, long 70.22° E), Gujarat, India, in terms of impairment of DNA integrity as a function of their exposure to elevated levels of mercury (Hg) under laboratory conditions. DNA integrity in C. tenuissimus was determined by partial alkaline unwinding assay. To our knowledge, this is the first such genotoxicity study to be conducted on marine diatom cultures towards understanding the relationship between Hg toxicity and DNA damage. Furthermore, we studied the impact of Hg on the growth of C. tenuissimus as a function of their exposure to enhanced levels of Hg in terms of decreasing chlorophyll a (chl a) concentrations. The data show the genotoxic effect of Hg on the growth of C. tenuissimus as well as DNA integrity to a great extent. Based on the results of our investigations, it is suggested that C. tenuissimus can be used as sentinel species for bio-monitoring of pollution due to genotoxic contaminants.
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Affiliation(s)
- Subhodeep Sarker
- Clinical Division of Fish Medicine, University of Veterinary Medicine, Veterinaerplatz 1, 1210, Vienna, Austria.
| | | | | | | | - A Sarkar
- National Institute of Oceanography, CSIR, Dona Paula, Goa, 403004, India.
- Global Enviro-Care, Kevnem, Caranzalem, Goa, 403002, India.
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21
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Augustyniak M, Gladysz M, Dziewięcka M. The Comet assay in insects--Status, prospects and benefits for science. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2015; 767:67-76. [PMID: 27036067 DOI: 10.1016/j.mrrev.2015.09.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 07/27/2015] [Accepted: 09/16/2015] [Indexed: 12/24/2022]
Abstract
The Comet assay has been recently adapted to investigate DNA damage in insects. The first reports of its use in Drosophila melanogaster appeared in 2002. Since then, the interest in the application of the Comet assay to studies of insects has been rapidly increasing. Many authors see substantial potential in the use of the Comet assay in D. melanogaster for medical toxicology studies. This application could allow the testing of drugs and result in an understanding of the mechanisms of action of toxins, which could significantly influence the limited research that has been performed on vertebrates. The possible perspectives and benefits for science are considered in this review. In the last decade, the use of the Comet assay has been described in insects other than D. melanogaster. Specifically, methods to prepare a cell suspension from insect tissues, which is a difficult task, were analyzed and compared in detail. Furthermore, attention was paid to any differences and modifications in the research protocols, such as the buffer composition and electrophoresis conditions. Various scientific fields in addition to toxicological and ecotoxicological research were considered. We expect the Comet assay to be used in environmental risk assessments and to improve our understanding of many important phenomena of insect life, such as metamorphosis, molting, diapause and quiescence. The use of this method to study species that are of key importance to humans, such as pests and beneficial insects, appears to be highly probable and very promising. The use of the Comet assay for DNA stability testing in insects will most likely rapidly increase in the future.
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Affiliation(s)
- Maria Augustyniak
- Department of Animal Physiology and Ecotoxicology, University of Silesia, Bankowa 9, PL 40-007 Katowice, Poland.
| | - Marcin Gladysz
- Department of Animal Physiology and Ecotoxicology, University of Silesia, Bankowa 9, PL 40-007 Katowice, Poland
| | - Marta Dziewięcka
- Department of Animal Physiology and Ecotoxicology, University of Silesia, Bankowa 9, PL 40-007 Katowice, Poland
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Jindal R, Verma S. In vivo genotoxicity and cytotoxicity assessment of cadmium chloride in peripheral erythrocytes of Labeo rohita (Hamilton). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 118:1-10. [PMID: 25890049 DOI: 10.1016/j.ecoenv.2015.04.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 03/12/2015] [Accepted: 04/07/2015] [Indexed: 06/04/2023]
Abstract
Cadmium chloride (CdCl2) induced genotoxicity and cytotoxicity has been assessed in the peripheral blood erythrocytes of freshwater fish Labeo rohita exposed to 0.37 and 0.62mg/L of CdCl2 in water for 100 days. The blood samples of the fish were collected at different intervals (days 1, 3, 5, 10, 15, 30, 60 and 100) of exposure period to analyze DNA damage using comet assay and the occurrence of micronuclei and other cellular anomalies. The results of comet assay showed a significant increase in the mean percentage of tail DNA at both the concentrations. Exposure to CdCl2 also induced micronuclei in addition to many nuclear abnormalities such as nuclear bud, binucleates, lobed, notched and vacuolated nuclei. Cytoplasmic abnormalities like echinocytes, acanthocytes, notched, microcytes and cells with vacuolated cytoplasm were also observed. The metal exposed groups showed significant variation in the frequency of cellular abnormalities as well as the extent of DNA damage in comparison to controls. These frequencies increased significantly (p<0.05) in concentration dependent manner, peaking on 10th day while a decreasing trend was observed after 15 days of the exposure period.
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Affiliation(s)
- Rajinder Jindal
- Aquatic Biology Laboratory, Panjab University, Chandigarh 160014, India.
| | - Sakshi Verma
- Aquatic Biology Laboratory, Panjab University, Chandigarh 160014, India.
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Bhagat J, Ingole BS. Genotoxic potency of mercuric chloride in gill cells of marine gastropod Planaxis sulcatus using comet assay. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:10758-10768. [PMID: 25758417 DOI: 10.1007/s11356-015-4263-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Accepted: 02/19/2015] [Indexed: 06/04/2023]
Abstract
In vivo and in vitro exposures were used to investigate the genotoxicity of mercuric chloride (HgCl2) to the marine snail, Planaxis sulcatus. The comet assay protocol was validated on gill cells exposed in vitro to hydrogen peroxide (H2O2, 0-50 μM). Snails were exposed in vivo for 96 h to HgCl2 (10, 20, 50, and 100 μg/l). Our results showed significant concentration-dependent increase in the tail DNA (TDNA) and olive tail moment (OTM) in exposed snails for all doses compared with controls. In vitro exposure to HgCl2 (10-100 μg/l) resulted in significantly higher values for TDNA at all concentrations. Our results showed that DNA damage increased in the gill cell with increasing exposure time. This study demonstrates the usefulness of comet assay for detection of DNA damage after exposure to HgCl2 and the sensitivity of marine snail P. sulcatus as a good candidate species for metal pollution.
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Affiliation(s)
- J Bhagat
- Biological Oceanographic Division, CSIR-National Institute of Oceanography, Dona Paula, Goa, 403004, India,
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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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Chen YY, Zhu JY, Chan KM. Effects of cadmium on cell proliferation, apoptosis, and proto-oncogene expression in zebrafish liver cells. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2014; 157:196-206. [PMID: 25456234 DOI: 10.1016/j.aquatox.2014.10.018] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 10/20/2014] [Accepted: 10/21/2014] [Indexed: 06/04/2023]
Abstract
Cadmium (Cd) is one of the major transitional metal that has toxic effects in aquatic organisms and their associated ecosystem; however, its hepatic toxicity and carcinogenicity are not very well characterized. We used a zebrafish liver (ZFL) cell line as a model to investigate the mechanism of Cd-induced toxicity on hepatocytes. Our results showed that Cd can be effectively accumulated in ZFL cells in our exposure experiments. Cell cytotoxicity assays and flow cytometer measurements revealed that Cd(2+) stimulated ZFL cell proliferation with decreasing apoptotic cell numbers indicating potentially tumorigenic effects of Cd in ZFL cells. Gene expression profiles also indicated that Cd downregulated oncogenes p53 and rad51 and upregulated immediate response oncogenes, growth arrest and DNA damage-inducible (gadd45) genes, and growth factors. We also found dramatic changes in the gene expression of c-jun and igf1rb at different exposure time points, supporting the notion that potentially tumorigenic of Cd-is involved in the activation of immediate early genes or genes related to apoptosis in cancer promotion.
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Affiliation(s)
- Ying Ying Chen
- School of Life Sciences, Chinese University, Sha Tin, N.T., Hong Kong SAR, China
| | - Jin Yong Zhu
- School of Life Sciences, Chinese University, Sha Tin, N.T., Hong Kong SAR, China
| | - King Ming Chan
- School of Life Sciences, Chinese University, Sha Tin, N.T., Hong Kong SAR, China.
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