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Oskoei P, Marçal R, Oliveira H, Guilherme S. Hitting two targets with one shot on pesticide genotoxicity assessment - Identifying risk while unveiling ex vivo approach as a throughput tool in gill-breathing animals. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:134948. [PMID: 38968824 DOI: 10.1016/j.jhazmat.2024.134948] [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: 02/27/2024] [Revised: 06/14/2024] [Accepted: 06/16/2024] [Indexed: 07/07/2024]
Abstract
Pesticides in the environment often compromise the ecosystem, thus requiring reliable approaches to assess their effects. Commonly used approaches, such as in vivo, come with several disadvantages, namely in the light of the 3 R's policy. Seeking for accurate and ethical approaches, this study intended to validate the ex vivo technique as an alternative, and to assess the genotoxicity of chemically-based pesticides and a biopesticide. The ex vivo approach was applied to gill cells of Procambarus clarkii for 2, 4 and 8 h. Cell viability and DNA integrity were evaluated to determine the applicability of this approach. Crayfish gill cells only showed to be suitable for exposures of 2 h. Accordingly, genotoxicity was evaluated in gill cells exposed, for 2 h, to environmentally relevant concentrations of the chemically-based pesticides dimethoate (20 µg L-1), imazalil (160 µg L-1) and penoxsulam (23 µg L-1), as well as to the bioinsecticide Turex® (25, 50, 100, 200 and 400 µg L-1). Every chemically-based pesticide demonstrated to be genotoxic, despite not inducing oxidative DNA damage. On the other hand, Turex® showed no genotoxic effects. Overall, the ex vivo approach demonstrated to be possible and practical to implement, improving the number of outcomes with a lower number of organisms. The findings from the screening test suggest that biological pesticides may pose a lower risk to non-target organisms compared to chemically-based pesticides.
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Affiliation(s)
- Párástu Oskoei
- Department of Biology & CESAM, University of Aveiro, Aveiro, Portugal.
| | - Raquel Marçal
- Department of Biology & CESAM, University of Aveiro, Aveiro, Portugal
| | - Helena Oliveira
- Department of Biology & CESAM, University of Aveiro, Aveiro, Portugal
| | - Sofia Guilherme
- Department of Biology & CESAM, University of Aveiro, Aveiro, Portugal
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2
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Malik NA, Nazir N, Manzoor M, Gull F. Fungicide-albumin interactions: unraveling the complex relationship-a comprehensive review. Biophys Rev 2024; 16:417-439. [PMID: 39309131 PMCID: PMC11415336 DOI: 10.1007/s12551-024-01190-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 04/03/2024] [Indexed: 09/25/2024] Open
Abstract
This review will give an insight into the interactions of serum albumins, which are proteins found in the blood, with fungicides. There are molecular interactions between several fungicides and two serum albumin proteins: human serum albumin (HSA) and bovine serum albumin (BSA). The main objective of this review is to through some light on the interactions of the fungicides with serum albumins and to highlight their toxicity level. The interactions of serum albumins with fungicides are complex and can be affected by the properties of the proteins themselves. This review provides valuable insight into the interactions between serum albumins and fungicides, which can help to know the efficacy and mechanism of fungicides and may help in designing new fungicides with low or no toxicity.
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Affiliation(s)
- Nisar Ahmad Malik
- Department of Chemistry, Islamic University of Science and Technology, Awantipora, Pulwama, Jammu and Kashmir India
| | - Nighat Nazir
- Department of Chemistry, Islamic University of Science and Technology, Awantipora, Pulwama, Jammu and Kashmir India
| | - Mehak Manzoor
- Department of Chemistry, Islamic University of Science and Technology, Awantipora, Pulwama, Jammu and Kashmir India
| | - Faizan Gull
- Department of Chemistry, Islamic University of Science and Technology, Awantipora, Pulwama, Jammu and Kashmir India
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3
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Morthorst JE, Holbech H, De Crozé N, Matthiessen P, LeBlanc GA. Thyroid-like hormone signaling in invertebrates and its potential role in initial screening of thyroid hormone system disrupting chemicals. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2023; 19:63-82. [PMID: 35581168 PMCID: PMC10083991 DOI: 10.1002/ieam.4632] [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: 02/02/2022] [Revised: 04/30/2022] [Accepted: 05/12/2022] [Indexed: 05/07/2023]
Abstract
This review examines the presence and evolution of thyroid-like systems in selected aquatic invertebrates to determine the potential use of these organisms in screens for vertebrate thyroid hormone axis disrupting chemicals (THADCs). Such a screen might support the phasing out of some vertebrate testing. Although arthropods including crustaceans do not contain a functional thyroid signaling system, elements of such a system exist in the aquatic phyla mollusks, echinoderms, tunicates, and cephalochordates. These phyla can synthesize thyroid hormone, which has been demonstrated in some groups to induce the nuclear thyroid hormone receptor (THR). Thyroid hormone may act in these phyla through interaction with a membrane integrin receptor. Thyroid hormone regulates inter alia metamorphosis but, unlike in vertebrates, this does not occur via receptor activation by the ligands triiodothyronine (T3) and thyroxine (T4). Instead, the unliganded nuclear receptor itself controls metamorphosis in mollusks, echinoderms, and tunicates, whereas the T3 derivative tri-iodothyroacetic acid (TRIAC) acts as a THR ligand in cephalochordates. In view of this, it may be possible to develop an invertebrate-based screen that is sensitive to vertebrate THADCs that interfere with thyroid hormone synthesis or metabolism along with interaction with membrane receptors. The review makes some recommendations for the need to develop an appropriate test method. Integr Environ Assess Manag 2023;19:63-82. © 2022 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).
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Affiliation(s)
| | - Henrik Holbech
- Department of BiologyUniversity of Southern DenmarkOdense MDenmark
| | - Noémie De Crozé
- Laboratoire Recherche Environnementale, L'ORÉAL Recherche & InnovationAulnay‐sous‐BoisFrance
| | | | - Gerald A. LeBlanc
- Department of Biological SciencesNorth Carolina State UniversityRaleighNorth CarolinaUSA
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4
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Sharma T, Sirpu Natesh N, Pothuraju R, Batra SK, Rachagani S. Gut microbiota: a non-target victim of pesticide-induced toxicity. Gut Microbes 2023; 15:2187578. [PMID: 36919486 PMCID: PMC10026936 DOI: 10.1080/19490976.2023.2187578] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/16/2023] Open
Abstract
The human gut microbiota can be potentially disrupted due to exposure of various environmental contaminants, including pesticides. These contaminants enter into non-target species in multiple ways and cause potential health risks. The gut microbiota-derived metabolites have a significant role in maintaining the host's health by regulating metabolic homeostasis. An imbalance in this homeostasis can result in the development of various diseases and their pathogenesis. Pesticides have hazardous effects on the host's gut microbiota, which is evident in a few recent studies. Therefore, there is an urgent need to explore the effect of pesticide on gut microbiota-mediated metabolic changes in the host, which may provide a better understanding of pesticide-induced toxicity. The present review summarizes the pesticide-induced effects on gut microbiota, which in turn, induces changes in the release of their secondary metabolites that could lead to various host health effects.
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Affiliation(s)
- Tusha Sharma
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Nagabhishek Sirpu Natesh
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
- Department of Veterinary Medicine & Surgery, University of Missouri, Columbia, MO, USA
- Roy Blunt NextGen Precision Health Institute, University of Missouri, Columbia, MO, USA
| | - Ramesh Pothuraju
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
- Fred & Pamela Buffett Cancer Center, Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, USA
| | - Satyanarayana Rachagani
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
- Department of Veterinary Medicine & Surgery, University of Missouri, Columbia, MO, USA
- Roy Blunt NextGen Precision Health Institute, University of Missouri, Columbia, MO, USA
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5
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Phenotypic and Gene Expression Profiles of Embryo Development of the Ascidian Ciona robusta Exposed to Dispersants. WATER 2022. [DOI: 10.3390/w14101539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Within EU approval policies, most dispersant ecotoxicity testing considers lethal concentrations for marine adult species, overlooking the embryotoxicological effects. Here we studied the ecotoxicity of two commercial dispersant formulations (dispersant A and B) on the embryogenesis of the ascidian Ciona robusta. Embryotoxicity and phenotypic alterations stated that dispersant B resulted more toxic than A (EC50 value of 44.30 and 160 μg mL−1, respectively) and induced severe larvae malformations at lower concentrations. Furthermore, the analysis of genes involved in different cellular response pathways indicated that those belonging to biotransformation were upregulated by dispersant A treatment, likely related to the presence of hydrocarbons. Instead, dispersant B induced cas8 gene downregulation, probably as a result of the prolonged exposure to mixture components. Our preliminary findings support the use of the C. robusta embryotoxicity test as a valuable tool for dispersant approval procedures, by providing sub-lethal responses on marine invertebrates closely related to vertebrates.
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Pereira PCG, Soares LOS, Júnior SFS, Saggioro EM, Correia FV. Sub-lethal effects of the pesticide imazalil on the earthworm Eisenia andrei: reproduction, cytotoxicity, and oxidative stress. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:33474-33485. [PMID: 31119543 DOI: 10.1007/s11356-019-05440-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 05/09/2019] [Indexed: 06/09/2023]
Abstract
Although considered an emerging contaminant and detected in the environment, the systematic and penetration fungicide imazalil ((RS)-1-(β-allyloxy-2,4-dichlorophenylethyl) imidazole) has received relatively little scientific attention with regard to its possible negative effects in the environment. Only a few toxicological studies have assessed the potential environmental effect of imazalil and its impact on organisms. In this context, the aim of the present study is to evaluate the effects of different concentrations of the pesticide imazalil on the earthworm Eisenia andrei in acute contact and chronic tests in natural soil. Moreover, several endpoints, such as biomass loss or gain, reproduction, behavior, effects on immune system cells, and oxidative stress were also evaluated. Imazalil toxicity to E. andrei was determined by three approaches: a filter paper contact test (0, 0.16, 1.66, 16.6, 166 μg.cm-2), an avoidance (0, 0.1, 1, and 10 mg.kg-1), and a chronic test for 45 days (0, 0.01, 0.1, 1, and 10 mg.kg-1). All organisms exposed to the filter paper contact and chronic tests were submitted to two endpoint analyses: first, coelomic fluid collection by the extrusion method to determine density, viability, and cell type; second, oxidative stress assessments by determining GST and CAT enzymatic activities. This study allows for the conclusion that imazalil does not cause immediate earthworm death after exposure (LC50 > 166 μg.cm-1). However, due to several complementary factors, this compound may compromise earthworm health and lead to death, as E. andrei individuals did not avoid the contaminated soil, thus contributing to longer exposure periods and consequent cumulative damage to their systems. Decreased immunocompetent cellular viability (p < 0.05) and density (p < 0.05) in the chronic test are noteworthy, leading to susceptibility to exogenous factors, as well as irreversible cellular damage provoked by oxidative stress, such as cellular membrane rupture.
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Affiliation(s)
| | - Lorena Oliveira Souza Soares
- Department of Natural Sciences, Federal University of the State of Rio de Janeiro, Av. Pasteur, 458, Rio de Janeiro, 22290-20, Brazil
| | - Sidney Fernandes Sales Júnior
- Studies Center Occupational Health and Human Ecology, National School of Public Health, Leopoldo Bulhões Street, 1480, Rio de Janeiro, 21041-210, Brazil
| | - Enrico Mendes Saggioro
- Department of Sanitation and Environmental Health, National School of Public Health, Leopoldo Bulhões Street, 1480, Rio de Janeiro, 21041-210, Brazil
| | - Fábio Veríssimo Correia
- Department of Natural Sciences, Federal University of the State of Rio de Janeiro, Av. Pasteur, 458, Rio de Janeiro, 22290-20, Brazil.
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7
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Çıldır DS, Liman R. Cytogenetic and genotoxic assessment in Allium cepa exposed to imazalil fungicide. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:20335-20343. [PMID: 32242316 DOI: 10.1007/s11356-020-08553-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 03/23/2020] [Indexed: 06/11/2023]
Abstract
Imazalil (IMZ), a fungicide containing imidazole group, is extensively used for the prevention and treatment of fungal diseases in plants. Current study was performed to examine cyto-genotoxic potential of IMZ on Allium cepa roots by following Allium ana-telophase and single cell gel electrophoresis (comet) assays. The concentration which reduced the growth of the root tips of IMZ by 50% compared to the negative control group (EC50) was found to be 1 μg/mL by Allium root growth inhibition test. 0.5, 1, and 2 μg/mL concentrations of IMZ were exposed to Allium roots for intervals of 24, 48, 72, and 96 h. 10 μg/mL of methyl methane sulfonate (MMS) and distilled water were used as control groups, both positive and negative. Statistical analysis was performed by using one-way ANOVA with Duncan's multiple comparison tests at p ≤ 0.05 and Pearson correlation test at p = 0.01. IMZ showed cytotoxic effect by statistically decreasing root growth and mitotic index (MI) and also genotoxic effect by statistically increasing chromosomal aberrations (CAs) and DNA damage compared to the negative control group. With these cyto-genotoxic effects, it should be used carefully and further cyto-genotoxic mechanisms should be investigated along with other toxicity tests.
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Affiliation(s)
- Damla Selin Çıldır
- Molecular Biology and Genetics Department, Faculty of Arts and Sciences, Uşak University, 1 Eylül Campus, 64300, Uşak, Turkey
| | - Recep Liman
- Molecular Biology and Genetics Department, Faculty of Arts and Sciences, Uşak University, 1 Eylül Campus, 64300, Uşak, Turkey.
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8
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Battistoni M, Di Renzo F, Menegola E, Bois FY. Quantitative AOP based teratogenicity prediction for mixtures of azole fungicides. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.comtox.2019.03.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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9
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Yuan X, Pan Z, Jin C, Ni Y, Fu Z, Jin Y. Gut microbiota: An underestimated and unintended recipient for pesticide-induced toxicity. CHEMOSPHERE 2019; 227:425-434. [PMID: 31003127 DOI: 10.1016/j.chemosphere.2019.04.088] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/11/2019] [Accepted: 04/12/2019] [Indexed: 06/09/2023]
Abstract
Pesticide pollution residues have become increasingly common health hazards over the last several decades because of the wide use of pesticides. The gastrointestinal tract is the first physical and biological barrier to contaminated food and is therefore the first exposure site. Interestingly, a number of studies have shown that the gut microbiota plays a key role in the toxicity of pesticides and has a profound relationship with environmental animal and human health. For instance, intake of the pesticide of chlorpyrifos can promote obesity and insulin resistance through influencing gut and gut microbiota of mice. In this review, we discussed the possible effects of different kinds of widely used pesticides on the gut microbiota in different experimental models and analyzed their possible subsequent effects on the health of the host. More and more studies indicated that the gut microbiota of animals played a very important role in pesticides-induced toxicity, suggesting that gut micriobita was also the unintended recipient of pesticides. We hope that more attention can focus on the relationship between pesticides, gut microbiota and environmental health risk assessment in near future.
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Affiliation(s)
- Xianling Yuan
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Zihong Pan
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Cuiyuan Jin
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Yinhua Ni
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Zhengwei Fu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Yuanxiang Jin
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, PR China.
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10
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Hosoya N, Motomura K, Tagawa E, Nagano M, Ogiwara C, Hosoya H. Effects of the fungicide ortho-phenylphenol (OPP) on the early development of sea urchin eggs. MARINE ENVIRONMENTAL RESEARCH 2019; 143:24-29. [PMID: 30442331 DOI: 10.1016/j.marenvres.2018.10.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 10/31/2018] [Accepted: 10/31/2018] [Indexed: 06/09/2023]
Abstract
In this study, we assessed the impact of imidazole fungicide ortho-phenylphenol (OPP) on the early development of a marine invertebrate, the sea urchin, a marine bioindicator. Fungicides are widely used and have been reported to accumulate not only in farm soil but also in freshwater and seawater sediments. Therefore, it is essential to clarify the effects of OPP on marine environments. Toxicity was estimated as the inhibition ratio of the 120 min-embryo and/or the 24 h-embryo development. The addition of OPP to embryos of the two sea urchin species, Scaphechinus mirabilis (S. mirabilis) and Strongylocentrotus nudus (S. nudus), at 0.1 mM or higher, resulted in acute toxicity (cell death). The IC50 value of the 120 min-embryos or the 24 h-embryos for S. mirabilis and S. nudus with OPP was around 0.06 mM, indicating that fertilized eggs and embryos of the sea urchin are more sensitive to OPP than higher vertebrates. In addition, in the presence of OPP (0.005-0.05 mM), the proportion (%) of the gastrula keeping the fertilization membrane increased, suggesting that OPP (0.005-0.05 mM) inhibited the hatching process, possibly by affecting the hatching enzyme activity.
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Affiliation(s)
- Natsumi Hosoya
- School of Social Information Studies, Otsuma Women's University, 12 Sanbancho, Chiyoda-ku, Tokyo, 102-8357, Japan.
| | - Kyoko Motomura
- School of Social Information Studies, Otsuma Women's University, 12 Sanbancho, Chiyoda-ku, Tokyo, 102-8357, Japan
| | - Emiko Tagawa
- School of Social Information Studies, Otsuma Women's University, 12 Sanbancho, Chiyoda-ku, Tokyo, 102-8357, Japan
| | - Misuzu Nagano
- School of Social Information Studies, Otsuma Women's University, 12 Sanbancho, Chiyoda-ku, Tokyo, 102-8357, Japan
| | - Chiharu Ogiwara
- School of Social Information Studies, Otsuma Women's University, 12 Sanbancho, Chiyoda-ku, Tokyo, 102-8357, Japan
| | - Hiroshi Hosoya
- Department of Biological Science, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka-shi, Kanagawa, 259-1293, Japan
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11
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Battistoni M, Mercurio S, Ficetola GF, Metruccio FC, Menegola E, Pennati R. The Ascidian Embryo Teratogenicity assay in Ciona intestinalis as a new teratological screening to test the mixture effect of the co-exposure to ethanol and fluconazole. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 57:76-85. [PMID: 29223040 DOI: 10.1016/j.etap.2017.11.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 11/27/2017] [Accepted: 11/28/2017] [Indexed: 06/07/2023]
Abstract
The aim of this work was to evaluate the Ascidian Embryo Teratogenicity assay (AET) as new alternative invertebrate model to test the developmental effects of the co-exposure to ethanol and fluconazole. Ciona intestinalis embryos were exposed to the azolic fungicide fluconazole, (FLUCO, 7.8-250μM), to ethanol (Eth, 0.01-0.5%) and to their mixture (0.01% Eth+FLUCO 7.8-250μM) from neurula to larval stage. At the end of the exposure period, larvae were morphologically evaluated and benchmark analysis performed by using the PROAST modelling software. Both compounds were teratogenic in a concentration-related manner, particularly affecting the pigmented organs. The co-exposure to Eth enhanced the effects of FLUCO, the additive hypothesis was not rejected by the modelling. The results demonstrated that AET could be considered a good vertebrate-free alternative model for toxicological investigation in embryos.
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Affiliation(s)
- Maria Battistoni
- Department of Environmental Sciences and Policy, Università degli Studi di Milano, via Celoria 26, 20133 Milan, Italy
| | - Silvia Mercurio
- Department of Environmental Sciences and Policy, Università degli Studi di Milano, via Celoria 26, 20133 Milan, Italy
| | - Gentile Francesco Ficetola
- Department of Environmental Sciences and Policy, Università degli Studi di Milano, via Celoria 26, 20133 Milan, Italy
| | - Francesca Cristiana Metruccio
- International Centre for Pesticides and Health Risk Prevention (ICPS), University Hospital Luigi Sacco, via G.B. Grassi 74, 20157 Milan, Italy
| | - Elena Menegola
- Department of Environmental Sciences and Policy, Università degli Studi di Milano, via Celoria 26, 20133 Milan, Italy.
| | - Roberta Pennati
- Department of Environmental Sciences and Policy, Università degli Studi di Milano, via Celoria 26, 20133 Milan, Italy
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12
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Toxicity of marine pollutants on the ascidian oocyte physiology: an electrophysiological approach. ZYGOTE 2017; 26:14-23. [DOI: 10.1017/s0967199417000612] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
SummaryIn marine animals with external fertilization, gametes are released into seawater where fertilization and embryo development occur. Consequently, pollutants introduced into the marine environment by human activities may affect gametes and embryos. These xenobiotics can alter cell physiology with consequent reduction of fertilization success. Here the adverse effects on the reproductive processes of the marine invertebrate Ciona intestinalis (ascidian) of different xenobiotics: lead, zinc, an organic tin compound and a phenylurea herbicide were evaluated. By using the electrophysiological technique of whole-cell voltage clamping, the effects of these compounds on the mature oocyte plasma membrane electrical properties and the electrical events of fertilization were tested by calculating the concentration that induced 50% normal larval formation (EC50). The results demonstrated that sodium currents in mature oocytes were reduced in a concentration-dependent manner by all tested xenobiotics, with the lowest EC50 value for lead. In contrast, fertilization current frequencies were differently affected by zinc and organic tin compound. Toxicity tests on gametes demonstrated that sperm fertilizing capability and fertilization oocyte competence were not altered by xenobiotics, whereas fertilization was inhibited in zinc solution and underwent a reduction in organic tin compound solution (EC50 value of 1.7 µM). Furthermore, fertilized oocytes resulted in a low percentage of normal larvae with an EC50 value of 0.90 µM. This study shows that reproductive processes of ascidians are highly sensitive to xenobiotics suggesting that they may be considered a reliable biomarker and that ascidians are suitable model organisms to assess marine environmental quality.
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13
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Jin C, Luo T, Zhu Z, Pan Z, Yang J, Wang W, Fu Z, Jin Y. Imazalil exposure induces gut microbiota dysbiosis and hepatic metabolism disorder in zebrafish. Comp Biochem Physiol C Toxicol Pharmacol 2017; 202:85-93. [PMID: 28888875 DOI: 10.1016/j.cbpc.2017.08.007] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 08/20/2017] [Accepted: 08/29/2017] [Indexed: 01/03/2023]
Abstract
The fungicide imazalil (IMZ) is used extensively to preserve freshness, prevent decay and control fungal infections in fruits, vegetables or other plants. Recently, some studies have reported that the real in aquatic systems have reached very high levels. Here, male adult zebrafish were exposed to 100 and 1000μg/L IMZ for 1, 7, 21days, and the gut microbiota and hepatic metabolism were evaluated. Exposure to a high concentration of IMZ for 21days decreased mucin secretion in the gut. Sequencing of the V3-V4 region of the bacterial 16S rRNA gene revealed a significant increase in the diversity of gut microbiota in male zebrafish. At the phylum level, the composition of Proteobacteria and Bacteroidetes was decreased, while those Fusobacteria and Firmicutes increased in the gut after exposure to 1000μg/L IMZ for 21days. At the genus level, 29 species of microorganisms were significantly changed after IMZ exposure. Based on GC/MS metabolomics analysis, 101 metabolites were observably significantly altered in the 1000μg/L IMZ-treatment group. These changed metabolites were mainly associated with the pathway of glycolysis, amino acid metabolism, and lipid metabolism. In addition, the transcription of some genes related to glycolysis and lipid metabolism, including Aco, Cpt1, Acc1, Srebp1a and Fas, was decreased significantly in the liver of zebrafish when exposed to 100 and 1000μg/L IMZ for 7 or 21days. These results indicated that exposure to IMZ could cause gut microbiota dysbiosis and metabolic disorders in adult zebrafish.
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Affiliation(s)
- Cuiyuan Jin
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Ting Luo
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Zhihong Zhu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Zihong Pan
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jiajing Yang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Wenchao Wang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Zhengwei Fu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Yuanxiang Jin
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China.
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14
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Li R, Dong F, Xu J, Liu X, Wu X, Pan X, Tao Y, Chen Z, Zheng Y. Enantioseparation of Imazalil and Monitoring of Its Enantioselective Degradation in Apples and Soils Using Ultrahigh-Performance Liquid Chromatography-Tandem Mass Spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:3259-3267. [PMID: 28383892 DOI: 10.1021/acs.jafc.7b00258] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Imazalil is a widely used systemic chiral fungicide that is still being employed as a racemic mixture without distinguishing the difference between enantiomers, which often leads to its inaccurate risk assessment. In this study, a robust and highly sensitive chiral separation method was developed for imazalil enantiomers by ultrahigh-performance liquid chromatography-tandem mass spectrometry and was further applied to study the degradation dynamics of imazalil enantiomers in apples and field soils at three sites in China. The baseline enantioseparation for imazalil was achieved within 3.5 min on a Lux Cellulose-2 (CCMPC) column with acetonitrile (ACN)/water (65:35, v/v) with a mobile phase at 0.5 mL/min flow rate and a column temperature of 20 °C. The limit of quantitation (LOQ) for each enantiomer was <0.60 μg/kg, with a baseline resolution of approximately 1.75. The research showed that (S)-(+)-imazalil degraded more rapidly than (R)-(-)-imazalil in Gala apples, whereas (R)-(-)-imazalil preferentially degraded in Golden Delicious apples. No significant enantioselectivity was observed in OBIR-2T-47 apples and field soils from the three sites. Results of this study provide useful references for risk assessment and the rational use of imazalil in further agricultural produce practice.
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Affiliation(s)
- Runan Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, People's Republic of China
| | - Fengshou Dong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, People's Republic of China
| | - Jun Xu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, People's Republic of China
| | - Xingang Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, People's Republic of China
| | - Xiaohu Wu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, People's Republic of China
| | - Xinglu Pan
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, People's Republic of China
| | - Yan Tao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, People's Republic of China
| | - Zenglong Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, People's Republic of China
| | - Yongquan Zheng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, People's Republic of China
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15
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Jin Y, Zhu Z, Wang Y, Yang E, Feng X, Fu Z. The fungicide imazalil induces developmental abnormalities and alters locomotor activity during early developmental stages in zebrafish. CHEMOSPHERE 2016; 153:455-461. [PMID: 27035382 DOI: 10.1016/j.chemosphere.2016.03.085] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 03/14/2016] [Accepted: 03/18/2016] [Indexed: 06/05/2023]
Abstract
The fungicide imazalil (IMZ) is used extensively to protect vegetable fields, fruit plantations and post-harvest crops from rot. Likely due to its wide-spread use, IMZ is frequently detected in vegetable, fruit, soil and even surface water samples. Even though several previous studies have reported on the neurotoxicity of IMZ, its effects on the neurobehavior of zebrafish have received little attention to date. In this study, we show that the heartbeat and hatchability of zebrafish were significantly influenced by IMZ concentrations of 300 μg L(-1) or higher. Moreover, in zebrafish larvae, locomotor behaviors such as average swimming speed and swimming distance were significantly decreased after exposure to 300 μg L(-1) IMZ for 96 h, and acetylcholinesterase (AChE) expression and activity were consistently inhibited in IMZ-treated fish. Our results further suggest that IMZ could act as a neuroendocrine disruptor by decreasing the expression of neurotoxicity-related genes such as Glial fibrillary acidic protein (Gfap), Myelin basic protein (Mbp) and Sonic hedgehog a (Shha) during early developmental stages of zebrafish. In conclusion, we show that exposure to IMZ has the potential to induce developmental toxicity and locomotor behavior abnormalities during zebrafish development.
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Affiliation(s)
- Yuanxiang Jin
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Zhihong Zhu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Yueyi Wang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Enlu Yang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Xiayan Feng
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Zhengwei Fu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China.
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16
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Asensi-Bernardi L, Martín-Biosca Y, Escuder-Gilabert L, Sagrado S, Medina-Hernández MJ. Evaluation of the enantioselective binding of imazalil to human serum albumin by capillary electrophoresis. Biomed Chromatogr 2015; 29:1637-42. [DOI: 10.1002/bmc.3472] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 02/04/2015] [Accepted: 03/04/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Lucía Asensi-Bernardi
- Departamento de Química Analítica, Facultad de Farmacia; Universitat de València; Burjassot Spain
| | - Yolanda Martín-Biosca
- Departamento de Química Analítica, Facultad de Farmacia; Universitat de València; Burjassot Spain
| | - Laura Escuder-Gilabert
- Departamento de Química Analítica, Facultad de Farmacia; Universitat de València; Burjassot Spain
| | - Salvador Sagrado
- Departamento de Química Analítica, Facultad de Farmacia; Universitat de València; Burjassot Spain
- Centro Interuniversitario de Reconocimiento Molecular y Desarrollo Tecnológico; Unidad Mixta Universidad Politécnica de Valencia-Universitat de València; Valencia Spain
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17
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Türkez H, Aydin E, Aslan A. An antidote for imazalil-induced genotoxicity in vitro: the lichen, Dermatocarpon intestiniforme (Körber) Hasse. ACTA BIOLOGICA HUNGARICA 2012; 63:354-61. [PMID: 22963916 DOI: 10.1556/abiol.63.2012.3.5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Imazalil (IMA), a commonly used fungicide in both agricultural and clinical domains, is suspected to produce serious toxic effects in vertebrates. In recent years, a number of studies have suggested that lichens might be easily accessible sources of natural drugs that could be used as a possible food supplement. Extensive research is being performed to explore the importance of lichen species, which are known to contain a variety of pharmacological active compounds. In this context, the antigenotoxic effect of aqueous Dermatocarpon intestiniforme (Körber) Hasse. extract (DIE) was studied against the genotoxic damage induced by IMA on cultured human lymphocytes (n = 6) using chromosomal aberration (CA) and micronucleus (MN) as cytogenetic endpoints. Human peripheral lymphocytes were treated in vitro with varying concentrations of DIE (0, 25, 50 and 100 μg/ml), tested in combination with IMA (336 μg/ml). DIE alone were not genotoxic and when combined with IMA treatment, it reduced the frequency of CAs and the rate of MNs. A clear dose-dependent decrease in the genotoxic damage of IMA was observed, suggesting a genoprotective role of DIE. The results of the present study suggest that this plant extract per se does not have a genotoxic potential, but can alleviate the genotoxicity of IMA on cultured human lymphocytes. In conclusion our findings may have an important application for the protection of cultured human lymphocyte from the genetic damage and side effects induced by medical and agricultural chemicals hazardous for people.
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Affiliation(s)
- H Türkez
- Department of Molecular Biology and Genetics, Faculty of Science, Erzurum Technical University, 25240 Erzurum, Turkey
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18
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Turkez H, Aydin E, Aslan A. Role of aqueous Bryoria capillaris (Ach.) extract as a genoprotective agent on imazalil-induced genotoxicity in vitro. Toxicol Ind Health 2012; 30:33-9. [DOI: 10.1177/0748233712448119] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In recent years, a number of studies have suggested that lichens might be the easily accessible sources of natural drugs that could be used as a possible food supplement. Extensive research is being carried out to explore the importance of lichen species, which are known to contain a variety of pharmacological active compounds. On the other hand, imazalil (IMA), a commonly used fungicide in both agricultural and clinical domains, is suspected to produce very serious toxic effects in vertebrates. In this context, the antigenotoxic effect of aqueous Bryoria capillaris (Ach.) extract (BCE) was studied against the genotoxic damage induced by IMA on cultured human lymphocytes using chromosomal aberrations (CA) and micronucleus (MN) as cytogenetic parameters. Human peripheral lymphocytes were treated in vitro with varying concentrations of BCE (5, 10, 25, 50 and 100 µg/mL), tested in combination with IMA (336 µg/mL). BCE alone was not genotoxic, and when combined with IMA treatment, it reduced the frequency of CAs and the rates of MN. A clear dose-dependent decrease in the genotoxic damage of IMA was observed, suggesting a genoprotective role of BCE. The results of the present study suggest that this plant extract per se do not have genotoxic potential, but can modulate the genotoxicity of IMA on peripheral human lymphocytes in vitro. In conclusion, our findings may have an important application in the protection of cultured human lymphocyte from the genetic damage and side effects induced by agricultural and medical chemicals that are hazardous to people.
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Affiliation(s)
- Hasan Turkez
- Department of Molecular Biology and Genetics, Faculty of Science, Erzurum Technical University, Erzurum, Turkey
| | - Elanur Aydin
- Department of Biology, Faculty of Science, Atatürk University, Erzurum, Turkey
| | - Ali Aslan
- Department of Biology, Kazim Karabekir Education Faculty, Atatürk University, Erzurum, Turkey
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19
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Gesto M, Castro LFC, Reis-Henriques MA, Santos MM. Retinol metabolism in the mollusk Osilinus lineatus indicates an ancient origin for retinyl ester storage capacity. PLoS One 2012; 7:e35138. [PMID: 22493737 PMCID: PMC3320870 DOI: 10.1371/journal.pone.0035138] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2012] [Accepted: 03/13/2012] [Indexed: 12/20/2022] Open
Abstract
Although retinoids have been reported to be present and active in vertebrates and invertebrates, the presence of mechanisms for retinoid storage in the form of retinyl esters, a key feature to maintain whole-organism retinoid homeostasis, have been considered to date a vertebrate innovation. Here we demonstrate for the first time the presence of retinol and retinyl esters in an invertebrate lophotrochozoan species, the gastropod mollusk Osilinus lineatus. Furthermore, through a pharmacological approach consisting of intramuscular injections of different retinoid precursors, we also demonstrate that the retinol esterification pathway is active in vivo in this species. Interestingly, retinol and retinyl esters were only detected in males, suggesting a gender-specific role for these compounds in the testis. Females, although lacking detectable levels of retinol or retinyl esters, also have the biochemical capacity to esterify retinol, but at a lower rate than males. The occurrence of retinyl ester storage capacity, together with the presence in males and females of active retinoids, i.e., retinoic acid isomers, indicates that O. lineatus has a well developed retinoid system. Hence, the present data strongly suggest that the capacity to maintain retinoid homeostasis has arisen earlier in Bilateria evolution than previously thought.
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Affiliation(s)
- Manuel Gesto
- CIMAR/CIIMAR (Interdisciplinary Centre of Marine and Environmental Research), University of Porto, Porto, Portugal
| | - L. Filipe C. Castro
- CIMAR/CIIMAR (Interdisciplinary Centre of Marine and Environmental Research), University of Porto, Porto, Portugal
| | - Maria Armanda Reis-Henriques
- CIMAR/CIIMAR (Interdisciplinary Centre of Marine and Environmental Research), University of Porto, Porto, Portugal
| | - Miguel Machado Santos
- CIMAR/CIIMAR (Interdisciplinary Centre of Marine and Environmental Research), University of Porto, Porto, Portugal
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
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20
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Turkez H, Aydin E. Anti-genotoxic role of eicosapentaenoic acid against imazalil-induced DNA damage in vitro. Toxicol Ind Health 2012; 29:584-90. [PMID: 22317822 DOI: 10.1177/0748233711433943] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Eicosapentaenoic acid (EPA) is a polyunsaturated n-3 fatty acid and is essential to the health of mammals. Recent data show that EPA can act as anti-mutagenic agent. On the other hand, pesticides comprise a new and important class of environmental pollutants nowadays. Imazalil (IMA), a commonly used fungicide in both agricultural and clinical domains is suspected to produce very serious toxic effects in vertebrates. The present study investigated the anti-genotoxic effect of EPA against the genotoxic damage induced by IMA on cultured human lymphocytes using chromosomal aberration (CA) and micronucleus (MN) tests as cytogenetic endpoints. Peripheral blood cells were treated in vitro with varying concentrations of EPA (2.5, 5, 10, 20 and 40 μg/ml), tested in combination with IMA (336 μg/ml). Our results revealed that the rates of CAs and MNs in lymphocytes were significantly (p < 0.05) increased by IMA as compared to the controls. The results also showed that EPA alone was not genotoxic. Moreover, when combined with IMA treatment, EPA reduced the frequencies of CAs and MNs. A clear dose-dependent decrease in the genotoxic damage of IMA was observed, suggesting a genoprotective role of EPA. In conclusion, our data may have an important application for the protection of cultured human lymphocyte from the genetic damage and repercussions induced by agricultural and industrial chemicals hazardous in people.
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Affiliation(s)
- Hasan Turkez
- Department of Molecular Biology and Genetics, Faculty of Sciences, Erzurum Technical University, Turkey
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21
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Kleinstreuer NC, Judson RS, Reif DM, Sipes NS, Singh AV, Chandler KJ, Dewoskin R, Dix DJ, Kavlock RJ, Knudsen TB. Environmental impact on vascular development predicted by high-throughput screening. ENVIRONMENTAL HEALTH PERSPECTIVES 2011; 119:1596-603. [PMID: 21788198 PMCID: PMC3226499 DOI: 10.1289/ehp.1103412] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Accepted: 07/25/2011] [Indexed: 05/07/2023]
Abstract
BACKGROUND Understanding health risks to embryonic development from exposure to environmental chemicals is a significant challenge given the diverse chemical landscape and paucity of data for most of these compounds. High-throughput screening (HTS) in the U.S. Environmental Protection Agency (EPA) ToxCast™ project provides vast data on an expanding chemical library currently consisting of > 1,000 unique compounds across > 500 in vitro assays in phase I (complete) and Phase II (under way). This public data set can be used to evaluate concentration-dependent effects on many diverse biological targets and build predictive models of prototypical toxicity pathways that can aid decision making for assessments of human developmental health and disease. OBJECTIVE We mined the ToxCast phase I data set to identify signatures for potential chemical disruption of blood vessel formation and remodeling. METHODS ToxCast phase I screened 309 chemicals using 467 HTS assays across nine assay technology platforms. The assays measured direct interactions between chemicals and molecular targets (receptors, enzymes), as well as downstream effects on reporter gene activity or cellular consequences. We ranked the chemicals according to individual vascular bioactivity score and visualized the ranking using ToxPi (Toxicological Priority Index) profiles. RESULTS Targets in inflammatory chemokine signaling, the vascular endothelial growth factor pathway, and the plasminogen-activating system were strongly perturbed by some chemicals, and we found positive correlations with developmental effects from the U.S. EPA ToxRefDB (Toxicological Reference Database) in vivo database containing prenatal rat and rabbit guideline studies. We observed distinctly different correlative patterns for chemicals with effects in rabbits versus rats, despite derivation of in vitro signatures based on human cells and cell-free biochemical targets, implying conservation but potentially differential contributions of developmental pathways among species. Follow-up analysis with antiangiogenic thalidomide analogs and additional in vitro vascular targets showed in vitro activity consistent with the most active environmental chemicals tested here. CONCLUSIONS We predicted that blood vessel development is a target for environmental chemicals acting as putative vascular disruptor compounds (pVDCs) and identified potential species differences in sensitive vascular developmental pathways.
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Affiliation(s)
- Nicole C Kleinstreuer
- National Center for Computational Toxiciology, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, USA.
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22
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Türkez H, Aydın E. The protective role of ascorbic acid on imazalil-induced genetic damage assessed by the cytogenetic tests. Toxicol Ind Health 2011; 28:648-54. [DOI: 10.1177/0748233711420471] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Ascorbic acid (AA), known as vitamin C, has important antioxidant and metabolic functions, making its incorporation into the human diet essential. On the other hand, imazalil (IMA), a commonly used fungicide in both agricultural and clinical domains is suspected to produce very serious toxic effects in vertebrates. In this study, the antigenotoxic effects of AA were studied against the genotoxic damage induced by IMA on cultured human lymphocytes using chromosomal aberration (CA) and sister chromatid exchange (SCE) as genetic end points. Human peripheral lymphocytes were treated in vitro with varying concentrations of AA (25, 50, 100, 200, and 400 μg/ml), tested in combination with IMA (336 mg/L). AA alone was not genotoxic and when combined with IMA treatment, reduced the frequencies of CAs and SCEs. A clear dose-dependent decrease in the genotoxic damage of IMA was observed, suggesting a genoprotective role of AA. In conclusion, the preventive role of AA in alleviating IMA-induced DNA damage was indicated for the first time in the present study.
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Affiliation(s)
- Hasan Türkez
- Department of Biology, Atatürk University, Erzurum, Turkey
| | - Elanur Aydın
- Department of Biology, Atatürk University, Erzurum, Turkey
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23
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Türkez H, Aydın E, Şişman T, Aslan A. Role of Peltigera rufescens (Weis) Humb. (a lichen) on imazalil-induced genotoxicity: analysis of micronucleus and chromosome aberrations in vitro. Toxicol Ind Health 2011; 28:492-8. [DOI: 10.1177/0748233711414615] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Imazalil (IMA), a commonly used fungicide in both agricultural and clinical domains, is suspected to produce very serious toxic effects on vertebrates. On the other hand, in recent years, a number of studies have suggested that lichens might be easily accessible sources of natural drugs that could be used as a possible food supplement. Extensive research is being carried out to explore the importance of lichen species, which are known to contain a variety of pharmacological active compounds. In this context, the anti-genotoxic effects of aqueous Peltigera rufescens (Weis) Humb. extracts (PREs) were studied against the genotoxic damage induced by IMA on cultured human lymphocytes using chromosomal aberrations (CAs) and micronucleus (MN) as cytogenetic parameters. Human peripheral lymphocytes were treated in vitro with varying concentrations of PREs (0, 5, 10, 25, 50 and 100 mg/L), tested in combination with IMA (336 mg/L). PREs alone were not genotoxic and when combined with IMA treatment, reduced the frequency of CAs and the rates of MNs. A clear dose-dependent decrease in the genotoxic damage of IMA was observed, suggesting a genoprotective role of P. rufescens extract. The results of the present study indicate that this plant extract per se do not have genotoxic potential but can minimize the genotoxicity of IMA on human lymphocytes in vitro. In conclusion our findings may have an important application for the protection of human lymphocyte from the genetic damage and side effects induced by agricultural and medical chemicals hazardous in people.
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Affiliation(s)
- Hasan Türkez
- Department of Biology, Atatürk University, Erzurum, Turkey
| | - Elanur Aydın
- Department of Biology, Atatürk University, Erzurum, Turkey
| | - Turgay Şişman
- Department of Biology, Atatürk University, Erzurum, Turkey
| | - Ali Aslan
- Department of Biology, Atatürk University, Erzurum, Turkey
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24
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Are azole fungicides a teratogenic risk for human conceptus? Toxicol Lett 2010; 198:106-11. [DOI: 10.1016/j.toxlet.2010.07.005] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2010] [Revised: 07/02/2010] [Accepted: 07/06/2010] [Indexed: 11/23/2022]
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25
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Şişman T, Türkez H. Toxicologic evaluation of imazalil with particular reference to genotoxic and teratogenic potentials. Toxicol Ind Health 2010; 26:641-8. [DOI: 10.1177/0748233710375951] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Imazalil (IMA) is a fungicide that is used extensively in fruit plantations and post-harvest treatments. IMA is suspected to produce craniofacial malformations in vertebrates and scarce data are available about its genotoxicity. Therefore, toxicity tests on embryogenesis of zebrafish (Danio rerio) and genotoxicity biomonitoring assays on human lymphocytes were performed to assess the effects of IMA. For this aim, zebrafish embryos were continually exposed, from 0.5 to 144 h post-fertilization, to a range of concentrations (5, 10, 20, 50 and 100 µM). IMA (0 to 672 µM) were also applied to the whole-blood cultures from two persons. We used chromosomal aberrations (CA) and micronucleus (MN) tests to examine DNA damage by IMA in human peripheral lymphocytes. The fungicide significantly altered zebrafish development even at low concentrations and its effects were dose-dependent. Results of the experiment indicated that IMA concentrations of 10 µM and above negatively affected embryo survival and hatching success. Morphological analysis uncovered a large suite of abnormalities such as less melanin pigmentation, wavy notochord, crooked trunk, tail defect and cardiac edema. The cytogenetic results clearly showed that IMA caused increases of the frequencies of the structural chromosomal aberrations and the rates of MN as compared to controls in a dose-dependent manner. In conclusion, the present findings are of importance in the assessment of the potential risk of fungicides as IMA on aquatic ecosystems and humans.
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Affiliation(s)
- Turgay Şişman
- Biology Department, Science Faculty, Atatürk University, Erzurum, Turkey,
| | - Hasan Türkez
- Biology Department, Science Faculty, Atatürk University, Erzurum, Turkey
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26
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Marotta F, Tiboni GM. Molecular aspects of azoles-induced teratogenesis. Expert Opin Drug Metab Toxicol 2010; 6:461-82. [DOI: 10.1517/17425251003592111] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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