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Genotoxicity of Fishes

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https://www.readbyqxmd.com/read/29156308/modulatory-effects-of-green-tea-extract-against-the-hepatotoxic-effects-of-4-nonylphenol-in-catfish-clarias-gariepinus
#1
A H Sayed, Hamdy A M Soliman
The antioxidant role of the green tea (Camellia sinensis) extract (GTE) was examined to remedy the toxic effects of (0.2mgl(-1)) 4-nonylphenol(4-NP). Biochemical parameters, antioxidant enzymes, liver lipid peroxidation (LPO), DNA fragmentation, and apoptosis as well as histopathology of liver of African catfish Clarias gariepinus were considered. Catfishes were divided into four groups: first group (control), second group (0.2mgl(-1) of 4-NP), third group (0.2mgl(-1)of 4-NP +100mg GTE l(-1)water), and fourth group (0...
November 17, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29134526/mucociliary-transport-differential-white-blood-cells-and-cyto-genotoxicity-in-peripheral-erythrocytes-in-fish-from-a-polluted-urban-pond
#2
Edison Bezerra da Silva, Sandra Aparecida da Silva Corrêa, Denis Moledo de Souza Abessa, Bruno Ferreira Xavier da Silva, Dolores Helena Rodriguez Ferreira Rivero, Robson Seriani
The present study evaluated the water quality of a polluted pond through the analysis of in vitro mucociliary transport, hematological parameters, and biomarkers of cyto-genotoxicity in the Nile tilapia (Oreochromis niloticus). Blood and mucus samples were collected from ten specimens from the polluted pond and from ten specimens from a control area. The fish were anesthetized with 3% benzocaine, mucus was collected directly from the gills, and blood was drawn from the caudal artery. Blood smears were stained using the May-Grünwald Giemsa process for the differential leukocyte counts and to determine the frequency of leukocytes, thrombocytes, erythroblasts, micronuclei, and nuclear abnormalities...
November 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29128605/erythrocytes-as-a-biological-model-for-screening-of-xenobiotics-toxicity
#3
REVIEW
Mayada Ragab Farag, Mahmoud Alagawany
Erythrocytes are the main cells in circulation. They are devoid of internal membrane structures and easy to be isolated and handled providing a good model for different assays. Red blood cells (RBCs) plasma membrane is a multi-component structure that keeps the cell morphology, elasticity, flexibility and deformability. Alteration of membrane structure upon exposure to xenobiotics could induce various cellular abnormalities and releasing of intracellular components. Therefore the morphological changes and extracellular release of haemoglobin [hemolysis] and increased content of extracellular adenosine triphosphate (ATP) [as signs of membrane stability] could be used to evaluate the cytotoxic effects of various molecules...
November 8, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29100180/ecological-risk-assessment-of-a-contaminated-stream-using-multi-level-integrated-biomarker-response-in-carassius-auratus
#4
Palas Samanta, Hyungjoon Im, Joorim Na, Jinho Jung
The goal of this study was to evaluate the adverse effects of wastewater effluents on freshwater crucian carp, Carassius auratus, inhabiting Sincheon stream using the integrated biomarker response (IBR) at the genotoxic (micronucleus [MN] test), oxidative stress (activity of catalase [CAT] and glutathione S-transferase [GST], and level of lipid peroxidation [LPO]), histopathological (degree of tissue changes [DTC]), and physiological (condition factor [CF] and liver somatic index [LSI]) levels. The CF and LSI were significantly (p < 0...
October 31, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29062187/acute-toxicity-of-commercial-atrazine-in-piaractus-mesopotamicus-histopathological-ultrastructural-molecular-and-genotoxic-evaluation
#5
Paula Pereira de Paiva, Mariana Cruz Delcorso, Valquíria Aparecida Matheus, Sonia Claudia do Nascimento de Queiroz, Carla Beatriz Collares-Buzato, Sarah Arana
AIM: The aim of this work was to evaluate the sensitivity of Pacu fingerlings (Piaractus mesopotamicus) by measuring the effects of median lethal concentration (LC50) of atrazine (ATZ - 28.58 mg/L) after acute exposure (up to 96 h). MATERIALS AND METHODS: The fish were exposed to the LC50 of ATZ for 96 h (28.58 mg/L) in a static system. During the experiment, the fingerlings were randomly distributed in four glass tanks (50 L) containing dechlorinated water. Four glass tanks were for the control group, and four were for the ATZ-exposed group (n=4 per glass tank), given a total number of 16 animals tested per group...
September 2017: Veterinary World
https://www.readbyqxmd.com/read/29056382/evaluation-of-genotoxic-potential-in-the-velika-morava-river-basin-in-vitro-and-in-situ
#6
Jovana Jovanović, Stoimir Kolarević, Aleksandra Milošković, Nataša Radojković, Vladica Simić, Biljana Dojčinović, Margareta Kračun-Kolarević, Momir Paunović, Jovana Kostić, Karolina Sunjog, Jovana Timilijić, Jelena Djordjević, Zoran Gačić, Bojana Žegura, Branka Vuković-Gačić
The Velika Morava River is the greatest national Serbian river and the significant tributary of the Danube River. The major problems in the Velika Morava River Basin (VMRB) represent untreated industrial and municipal wastewaters. In this study, the level of genotoxic potential at the sites along the VMRB was evaluated by parallel in vitro and in situ approach. Within in vitro testing, genotoxicity of native water samples collected from the sites in VMRB was evaluated by SOS/umuC test on Salmonella typhimurium TA1535/pSK1002 and by the comet assay on HepG2 cells...
October 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29031220/effects-of-glyphosate-based-herbicide-on-pintado-da-amaz%C3%A3-nia-hematology-histological-aspects-metabolic-parameters-and-genotoxic-potential
#7
Fernando Rafael de Moura, Ritane Rose da Silva Lima, Ana Paula Simões da Cunha, Patrícia da Costa Marisco, Danilo Henrique Aguiar, Marina Mariko Sugui, Adilson Paulo Sinhorin, Valéria Dornelles Gindri Sinhorin
Roundup Original(®) is an herbicide widely used in Mato Grosso's agriculture and it may contamine water bodies, being an unforeseen xenobiotic to aquatic organisms, particularly fish. This study investigated the effects on the hybrid fish jundiara (Leiarius marmoratus×Pseudoplatystoma reticulatum) of an environmentally relevant exposure to this herbicide. Glucose levels in liver, muscle and plasma decreased after exposure to 1.357mgL(-1) of Roundup Original(®) (glyphosate nominal concentration), while glycogen levels reduced in liver and muscle for different times...
September 29, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29031051/17%C3%AE-estradiol-induces-cyto-genotoxicity-on-blood-cells-of-common-carp-cyprinus-carpio
#8
Luis Orozco-Hernández, Adriana Andrea Gutiérrez-Gómez, Nely SanJuan-Reyes, Hariz Islas-Flores, Sandra García-Medina, Marcela Galar-Martínez, Octavio Dublán-García, Reyna Natividad, Leobardo Manuel Gómez-Oliván
17β-Estradiol, a natural hormone present at high concentrations in aquatic ecosystems, affects and modifies endocrine function in animals. In recent years research workers have expressed concern over its potential effects on aquatic organisms; however, little is known about its capacity to induce genetic damage or the pro-apoptotic effects of such damage on fish. Therefore, this study aimed to evaluate 17β-estradiol-induced cyto-genotoxicity in blood cells of the common carp Cyprinus carpio exposed to different concentrations (1 ng, 1 μg and 1 mg L(-1))...
October 6, 2017: Chemosphere
https://www.readbyqxmd.com/read/28982072/relationship-between-genotoxicity-and-oxidative-stress-induced-by-mercury-on-common-carp-cyprinus-carpio-tissues
#9
Sandra García-Medina, Marcela Galar-Martínez, Leobardo Manuel Gómez-Oliván, Karina Ruiz-Lara, Hariz Islas-Flores, Eloy Gasca-Pérez
Mercury is one of the most toxic metals in aquatic systems since it is able to induce neurobehavioral disorders as well as renal and gastrointestinal tract damage. The common carp Cyprinus carpio is an important species from both an ecological and economic viewpoint as it is consumed in many countries, the top producers being Mexico, China, India and Japan. The present study aimed to evaluate the relation between Hg-induced oxidative stress and genotoxicity in diverse tissues of C. carpio. Specimens were exposed to 0...
September 21, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28963978/water-quality-parameters-biomarkers-and-metal-bioaccumulation-in-native-fish-captured-in-the-ilha-river-southern-brazil
#10
Thaís Dalzochio, Leonardo Airton Ressel Simões, Mateus Santos de Souza, Gabriela Zimmermann Prado Rodrigues, Ismael Evandro Petry, Natália Bordin Andriguetti, Gláucia Joselaine Herbert Silva, Günther Gehlen, Luciano Basso da Silva
The Ilha River is one of the main tributaries of the Sinos River, southern Brazil, and it is located in an area characterized by low population density and presence of agricultural activities. Thus, this study aimed to assess the water quality of two sites of the Ilha River (source and mouth, S1 and S2 respectively) in five sampling periods using water physicochemical and microbiological analyses, biomarkers, such as condition factor, micronucleus test, gill histopathological analysis, and metal bioaccumulation in the native fish Bryconamericus iheringii...
September 19, 2017: Chemosphere
https://www.readbyqxmd.com/read/28963607/mutagenic-and-genotoxic-effects-and-metal-contaminations-in-fish-of-the-amambai-river-upper-paran%C3%A3-river-brazil
#11
Lucilene Finoto Viana, Yzel Rondon Súarez, Claudia Andrea Lima Cardoso, Bruno do Amaral Crispim, Alexeia Barufatti Grisolia, Sidnei Eduardo Lima-Junior
The present study evaluated mutagenic and genotoxic effects and metal accumulation in the liver and musculature of Pterygoplichthys ambrosetti and Prochilodus lineatus in the Amambai River, a tributary of the Upper Paraná River in Brazil. We also evaluated the potential for these fish species as environmental bioindicators and performed risk assessment for conservation purposes. We found that P. ambrosetti had a higher frequency of micronuclei compared to P. lineatus (p < 0.0001). There were no significant differences between species in other erythrocyte nuclear abnormalities (ENA) (p > 0...
September 30, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28948416/genotoxic-effects-and-gene-expression-in-danio-rerio-hamilton-1822-cypriniformes-cyprinidae-exposed-to-mining-impacted-tributaries-in-manizales-colombia
#12
Paula A Ossa-López, Gabriel J Castaño-Villa, Fredy A Rivera-Páez
The zebrafish (Danio rerio) is one of the most studied aquatic organisms for water biomonitoring, due to its sensitivity to environmental degradation and resistance to toxic substances. This study determined the presence of micronuclei and nuclear abnormalities in peripheral blood erythrocytes, and assessed the gene expression of caspase-3 (CASP-3) and metallothionein 1 (MT-1) in the gills and liver of D. rerio. The study fish (n = 45) were exposed to water collected from two stations with mining impact (E2 and E3) and a reference station without evident mining contamination (E1), all located in La Elvira stream (Manizales-Colombia)...
September 25, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28941401/effect-based-assessment-of-toxicity-removal-during-wastewater-treatment
#13
Pia Välitalo, Riccardo Massei, Ilse Heiskanen, Peter Behnisch, Werner Brack, Andrew J Tindall, David Du Pasquier, Eberhard Küster, Anna Mikola, Tobias Schulze, Markus Sillanpää
Wastewaters contain complex mixtures of chemicals, which can cause adverse toxic effects in the receiving environment. In the present study, the toxicity removal during wastewater treatment at seven municipal wastewater treatment plants (WWTPs) was investigated using an effect-based approach. A battery of eight bioassays was applied comprising of cytotoxicity, genotoxicity, endocrine disruption and fish embryo toxicity assays. Human cell-based CALUX assays, transgenic larval models and the fish embryo toxicity test were particularly sensitive to WWTP effluents...
December 1, 2017: Water Research
https://www.readbyqxmd.com/read/28890382/in%C3%A2-vitro-genotoxicity-and-in%C3%A2-vivo-subchronic-evaluation-of-the-anti-inflammatory-pyrazole-compound-lqfm021
#14
Soraia Santana de Moura, Renato Ivan de Ávila, Lara Barroso Brito, Rhaul de Oliveira, Gisele Augusto Rodrigues de Oliveira, Francine Pazini, Ricardo Menegatti, Aline Carvalho Batista, Cesar Koppe Grisolia, Marize Campos Valadares
Scientific evidences have highlighted 5-(1-(3-fluorophenyl)-1H-pyrazol-4-yl)-2H-tetrazole (LQFM021) as a promising anti-inflammatory, analgesic and antinociceptive agent due to its effects on peripheral opioid receptors associated with activation of the nitric oxide/cGMP/KATP pathway. Despite these important pharmacological findings, toxicity data of LQFM021 are scarce. Thus, this study investigated the in vitro genotoxicity of LQFM021 through cytokinesis-block micronucleus assay (OECD Nº 487/2014). Moreover, zebrafish model was used to assess the embryotoxicity potential of LQFM021 using fish embryo toxicity test (OECD Nº 236/2013) with extended exposure to evaluate subchronic larval development...
November 1, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28868735/micronuclei-and-other-erythrocyte-nuclear-abnormalities-in-fishes-from-the-great-lakes-basin-usa
#15
Ryan P Braham, Vicki S Blazer, Cassidy H Shaw, Patricia M Mazik
Biological markers (biomarkers) sensitive to genotoxic and mutagenic contamination in fishes are widely used to identify exposure effects in aquatic environments. The micronucleus assay was incorporated into a suite of indicators to assess exposure to genotoxic and mutagenic contamination at five Great Lakes Areas of Concern (AOCs), as well as one non-AOC (reference) site. The assay allowed enumeration of micronuclei as well as other nuclear abnormalities for both site and species comparisons. Erythrocyte abnormality data was also compared to skin and liver tumor prevalence and hepatic transcript abundance...
October 2017: Environmental and Molecular Mutagenesis
https://www.readbyqxmd.com/read/28844240/developmental-toxicity-and-dna-damaging-properties-of-silver-nanoparticles-in-the-catfish-clarias-gariepinus
#16
Alaa El-Din H Sayed, Hamdy A M Soliman
Although, silver nanoparticles (AgNPs) are used in many different products, little information is known about their toxicity in tropical fish embryos. Therefore, this study evaluated the developmental toxicity of waterborne silver nanoparticles in embryos of Clarias gariepinus. Embryos were treated with (0, 25, 50, 75ng/L silver nanoparticles) in water up to 144h postfertilization stage (PFS). Results revealed various morphological malformations including notochord curvature and edema. The mortality rate, malformations, and DNA fragmentation in embryos exposed to silver nanoparticles increased in a dose- and embryonic stage-dependent manner...
October 2017: Mutation Research
https://www.readbyqxmd.com/read/28835124/in-vitro-and-in-vivo-characteristics-of-biogenic-high-surface-silica-nanoparticles-in-a549-lung-cancer-cell-lines-and-danio-rerio-model-systems-for-inorganic-biomaterials-development
#17
Suriyaprabha Rangaraj, Rajendran Venkatachalam
Silica based organic-inorganic hybrids are turned over the most necessitate biomaterial due to their exotic biomedical properties. Colloidal silica nanoparticles (SNPs) of high surface area are synthesized from the bamboo wastes (leave biomass) as a viable and promising alternative to synthetic silica sol through alkaline extraction process. Physico-chemical properties of the prepared silica powders are examined employing extensive characterization tools. The characteristic results of the silica sol demonstrate amorphous particles (average size: 25 nm) with relatively high surface area (428 m(2) g(-1)) and spherical morphology...
August 24, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28819745/bioassessment-of-the-effluents-discharged-from-two-export-oriented-industrial-zones-located-in-kelani-river-basin-sri-lanka-using-erythrocytic-responses-of-the-fish-nile-tilapia-oreochromis-niloticus
#18
C K Hemachandra, A Pathiratne
Complex effluents originating from diverse industrial processes in industrial zones could pose cytotoxic/genotoxic hazards to biota in the receiving ecosystems which cannot be revealed by conventional monitoring methods. This study assessed potential cytotoxicity/genotoxicity of treated effluents of two industrial zones which are discharged into Kelani river, Sri Lanka combining erythrocytic abnormality tests and comet assay of the tropical model fish, Nile tilapia. Exposure of fish to the effluents induced erythrocytic DNA damage and deformed erythrocytes with serrated membranes, vacuolations, nuclear buds and micronuclei showing cytotoxic/genotoxic hazards in all cases...
August 17, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28792275/subacute-toxicity-effects-of-deltamethrin-on-oxidative-stress-markers-in-rainbow-trout
#19
Antonia Concetta Elia, Federica Giorda, Nicole Pacini, Ambrosius Josef Martin Dörr, Tommaso Scanzio, Marino Prearo
Deltamethrin is a pyrethroid insecticide that is considered extremely toxic to aquatic organisms. We evaluated the effect of subacute doses (0.033, 0.1, or 0.3 mg/kg) of deltamethrin on micronucleus frequency and oxidative stress markers in Rainbow Trout Oncorhynchus mykiss at 1, 2, 3, 4, and 8 d after intracoelomic injection. No genotoxic damage was recorded, as no specimen showed a micronucleus number above the physiological range. Deltamethrin exposure elicited a transient reduction in the levels of superoxide dismutase, catalase, glutathione peroxidase, and glutathione S-transferase and a persistent decrease in glutathione reductase activity...
September 2017: Journal of Aquatic Animal Health
https://www.readbyqxmd.com/read/28756254/evaluation-of-chlorpyrifos-effects-alone-and-combined-with-lipopolysaccharide-stress-on-dna-integrity-and-immune-responses-of-the-three-spined-stickleback-gasterosteus-aculeatus
#20
Adrien Marchand, Jean-Marc Porcher, Cyril Turies, Edith Chadili, Olivier Palluel, Patrick Baudoin, Stéphane Betoulle, Anne Bado-Nilles
Organism immune defences might be weakened by pollutants, largely detected in aquatic ecosystems, leading to the facilitation for opportunistic pathogens to infect organisms. In this context, destabilization of fish non-specific immune parameters and erythrocyte DNA integrity was tested, on a model fish species, the three-spined stickleback (Gasterosteus aculeatus), after exposure to chlorpyrifos (CPF). Alone, pesticide exposure induced a genotoxic potential (chlorpyrifos at 1.75 and 0.88µg/L) in addition to a decrease in phagocytosis capacity and a stimulation of respiratory burst...
July 27, 2017: Ecotoxicology and Environmental Safety
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