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von Hellfeld R, Gade C, Leist M, Braunbeck T. Rearing conditions (isolated versus group rearing) affect rotenone-induced changes in the behavior of zebrafish (Danio rerio) embryos in the coiling assay. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:55624-55635. [PMID: 39240433 DOI: 10.1007/s11356-024-34870-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Accepted: 08/26/2024] [Indexed: 09/07/2024]
Abstract
Under regulations such as REACH, testing of novel and established compounds for their (neuro)toxic potential is a legal requirement in many countries. These are largely based on animal-, cost-, and time-intensive in vivo models, not in line with the 3 Rs' principle of animal experimentation. Thus, the development of alternative test methods has also received increasing attention in neurotoxicology. Such methods focus either on physiological alterations in brain development and neuronal pathways or on behavioral changes. An example of a behavioral developmental neurotoxicity (DNT) assay is the zebrafish (Danio rerio) embryo coiling assay, which quantifies effects of compounds on the development of spontaneous movement of zebrafish embryos. While the importance of embryo-to-embryo contact prior to hatching in response to environmental contaminants or natural threats has been documented for many other clutch-laying fish species, little is known about the relevance of intra-clutch contacts for zebrafish. Here, the model neurotoxin rotenone was used to assess the effect of grouped versus separate rearing of the embryos on the expression of the coiling behavior. Some group-reared embryos reacted with hyperactivity to the exposure, to an extent that could not be recorded effectively with the utilized software. Separately reared embryos showed reduced activity, compared with group-reared individuals when assessing. However, even the control group embryos of the separately reared cohort showed reduced activity, compared with group-reared controls. Rotenone could thus be confirmed to induce neurotoxic effects in zebrafish embryos, yet modifying one parameter in an otherwise well-established neurotoxicity assay such as the coiling assay may lead to changes in behavior influenced by the proximity between individual embryos. This indicates a complex dependence of the outcome of behavior assays on a multitude of environmental parameters.
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Affiliation(s)
- Rebecca von Hellfeld
- Centre for Organismal Studies, Aquatic Ecology and Toxicology, University of Heidelberg, 69120, Heidelberg, Germany.
- School of Biological Sciences, University of Aberdeen, Aberdeen, AB24 3UU, UK.
| | - Christoph Gade
- Centre for Organismal Studies, Aquatic Ecology and Toxicology, University of Heidelberg, 69120, Heidelberg, Germany
- School of Biological Sciences, University of Aberdeen, Aberdeen, AB24 3UU, UK
| | - Marcel Leist
- In Vitro Toxicology and Biomedicine, Department Inaugurated By the Doerenkamp-Zbinden Foundation, University of Konstanz, 78457, Constance, Germany
- CAAT Europe, University of Konstanz, 78457, Constance, Germany
| | - Thomas Braunbeck
- Centre for Organismal Studies, Aquatic Ecology and Toxicology, University of Heidelberg, 69120, Heidelberg, Germany
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Raghul Kannan S, Latha Laxmi IP, Ahmad SF, Tamizhselvi R. Embryonic ethanol exposure induces oxidative stress and inflammation in zebrafish model: A dose-dependent study. Toxicology 2024; 506:153876. [PMID: 38945197 DOI: 10.1016/j.tox.2024.153876] [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: 05/09/2024] [Revised: 06/22/2024] [Accepted: 06/27/2024] [Indexed: 07/02/2024]
Abstract
Alcohol, or ethanol, is a major contributor to detrimental diseases and comorbidities worldwide. Alcohol use during pregnancy intervenes the developing embryos leading to morphological changes, neurocognitive defects, and behavioral changes known as fetal alcohol spectrum disorder (FASD). Zebrafish have been used as a model to study FASD; however, the mechanism and the impact of ethanol on oxidative stress and inflammation in the zebrafish FASD model remain unexplored. Hence, we exposed zebrafish embryos to different concentrations of ethanol (0 %, 0.5 %, 1.0 %, 1.25 %, and 1.5 % ethanol (v/v)) at 4-96 hours post-fertilization (hpf) to study and characterize the ethanol concentration for the FASD model to induce oxidative stress and inflammation. Here, we studied the survival rate and developmental toxicity parameters at different time points and measured oxidative stress, reactive oxygen species (ROS) generation, apoptosis, and pro-inflammatory gene expression in zebrafish larvae. Our findings indicate that ethanol causes various developmental abnormalities, including decreased survival rate, spontaneous tail coiling, hatching rate, heart rate, and body length, associated with increased malformation. Further, ethanol exposure induced oxidative stress by increasing lipid peroxidation and nitric oxide production and decreasing glutathione levels. Subsequently, ethanol increased ROS generation, apoptosis, and pro-inflammatory gene (TNF-α and IL-1β) expression in ethanol exposed larvae. 1.25 % and 1.5 % ethanol had significant impacts on zebrafish larvae in all studied parameters. However, 1.5 % ethanol showed decreased survival rate and increased malformations. Overall, 1.25 % ethanol is the ideal concentration to study the oxidative stress and inflammation in the zebrafish FASD model.
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Affiliation(s)
- Sampath Raghul Kannan
- School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India.
| | | | - Sheikh F Ahmad
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Ramasamy Tamizhselvi
- School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India.
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Sayuri Cardoso Ohashi A, Reis de Souza Schacher H, Staub Pizzato C, Ryff Moreira Roca Vianna M, Macedo de Menezes L. Embryotoxicity and teratogenesis of orthodontic acrylic resin in zebrafish. Heliyon 2024; 10:e32067. [PMID: 38952375 PMCID: PMC11215258 DOI: 10.1016/j.heliyon.2024.e32067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 05/09/2024] [Accepted: 05/28/2024] [Indexed: 07/03/2024] Open
Abstract
Objectives This study investigated the in vivo embryotoxicity, teratogenic potential, and additional effects of orthodontic acrylic resin as well as its components, utilizing zebrafish as a model organism. The research focused on morphological, cardiac, behavioral, and cognitive evaluations that were performed on embryos and larval-stage animals subjected to chronic exposure. Materials and methods Embryo and larval-stage zebrafish were categorized into five experimental groups, which were further subdivided into five subgroups. These subgroups included three specific doses for each tested substance, a control with the vehicle (0.1 % dimethyl sulfoxide in water), and an absolute control (water). Assessments were performed on day 5 post-fertilization, which included morphological, cardiac, behavioral, and cognitive evaluations. All experiments had a sample size of ten animals and were performed in triplicate. Survival and hatching rates were analyzed using the Kaplan-Meier test, while other measurements were assessed using one-way analysis of variance (ANOVA), followed by the Tukey post hoc test. Results Statistically significant differences were observed between the control and treatment groups across all the tested substances for heart rate, cognitive responsiveness, and cellular apoptosis. However, survival, hatching rate, and other parameters exhibited no significant variation, except for the highest dose in the dibutyl phthalate group, which demonstrated a notable difference in survival. Conclusions Chronic exposure to acrylic resin and its components may be associated with decreased cognitive ability and cardiac rhythm, as well as an increase in the level of cellular apoptosis in zebrafish.
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Affiliation(s)
- Amanda Sayuri Cardoso Ohashi
- Dental Program, School of Health and Life Sciences Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Helena Reis de Souza Schacher
- Dental Program, School of Health and Life Sciences Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Christiane Staub Pizzato
- ZebLab & Laboratory of Biology and Development of the Nervous System, School of Biosciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Monica Ryff Moreira Roca Vianna
- ZebLab & Laboratory of Biology and Development of the Nervous System, School of Biosciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Luciane Macedo de Menezes
- Dental Program, School of Health and Life Sciences Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
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Małkowska A, Ługowska K, Grucza K, Małkowska W, Kwiatkowska D. Ethyl glucuronide and ethyl sulfate in the zebrafish after ethanol exposure. Alcohol 2024; 115:33-39. [PMID: 37633541 DOI: 10.1016/j.alcohol.2023.08.010] [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: 01/24/2022] [Revised: 08/21/2023] [Accepted: 08/21/2023] [Indexed: 08/28/2023]
Abstract
Ethanol exposure during pregnancy is an important problem and is the cause of fetal alcohol syndrome (FAS) and fetal alcohol spectrum disorder (FASD). The etiology of FAS and FASD can be elucidated using animal models. Recently, a novel model, the zebrafish (Danio rerio), has garnered the interest of researchers. This study confirmed the negative influence of ethyl alcohol (0.5 %, 1.5 %, and 2.5 % v/v) on the development of zebrafish embryos. The observed malformations included pericardial and yolk sac edema, increased body curvature, tail edema, and a decreased embryo hatching rate. The differences in body length, body width, and heart rate were statistically significant. Due to the similarities in the quantity and function of ethanol biotransformation enzymes between zebrafish and mammals, this study investigated the nonoxidative metabolites of ethanol - ethyl glucuronide (EtG) and ethyl sulfate (EtS) - in zebrafish following ethanol exposure. This research confirmed that EtG and EtS concentrations can be measured in zebrafish embryos, and the levels of these metabolites appear to be associated with the ethyl alcohol concentration in the medium.
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Affiliation(s)
- Anna Małkowska
- Department of Toxicology and Food Science, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1 Street, 02-097 Warsaw, Poland.
| | - Kinga Ługowska
- Department of Toxicology and Food Science, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1 Street, 02-097 Warsaw, Poland
| | - Krzysztof Grucza
- Polish Anti-Doping Laboratory, Księcia Ziemowita 53/4 Street, 03-885 Warsaw, Poland
| | - Weronika Małkowska
- Department of Life Sciences, University of Roehampton, SW15 5PJ, London, United Kingdom
| | - Dorota Kwiatkowska
- Polish Anti-Doping Laboratory, Księcia Ziemowita 53/4 Street, 03-885 Warsaw, Poland
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Saleh Hodin NA, Chong SG, Bakar NA, Fahmi MSAM, Ramlan NF, Hamid NNAZZ, Fadzar MSIM, Zulkifli AR, Norazhar AI, Mastuki SN, Faudzi SMM, Ibrahim WNW, Azmai MNA. Toxicity and teratogenicity effects of valproic acid on zebrafish (Danio rerio) embryos in relation to autism spectrum disorder. Birth Defects Res 2023; 115:1475-1485. [PMID: 37507847 DOI: 10.1002/bdr2.2227] [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: 04/06/2023] [Revised: 06/28/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023]
Abstract
Valproic acid (VPA) is a widely prescribed antiepileptic drug with various medicinal efficacies. Accumulated evidence implied that prenatal exposure to VPA is highly associated with autism spectrum disorder (ASD). In this study, the zebrafish were exposed to a set of VPA concentrations (0, 5, 10, 20, 40, 80, 160, 320, 640, 1280, and 2560 μM) at 5 h post fertilization (hpf) to 120 hpf. The adverse effects of VPA were extensively studied through the evaluations on the mortality, heartbeats, spontaneous tail coiling, and hatching rate. Morphological observations were conducted at 120 hpf, following the exposure termination. Basic locomotor responses and anxiety-like behavioral alterations evaluated for behavioral impairments are the hallmark feature of ASD. The exposure to VPA at teratogenic concentrations reduced the aforementioned parameters in a dose-dependent manner (p ≤ .05). At the selected non-teratogenic concentrations of VPA, the treated larvae demonstrated profound alterations of basic locomotor responses. No significant changes of anxiety and thigmotactic behaviors were observed on the VPA-treated fish compared to the control (p ≥ .005). This study depicted that embryonic zebrafish exposure to VPA produced significant toxicity and teratogenicity effects as well as the alterations of basic behavioral responses. Overall, this study provides a fundamental insight of the toxicity effects at morphological and behavioral levels to facilitate the understanding of ASD mechanisms at different molecular levels.
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Affiliation(s)
- Nur Atikah Saleh Hodin
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, Serdang, Malaysia
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia
- Centre of Foundation Studies for Agricultural Science, Universiti Putra Malaysia, Serdang, Malaysia
| | - Siok Geok Chong
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia
| | - Noraini Abu Bakar
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, Serdang, Malaysia
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia
| | | | - Nurul Farhana Ramlan
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, Serdang, Malaysia
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia
| | | | | | - Abdul Rahman Zulkifli
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia
| | - Anis Irfan Norazhar
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia
| | - Siti Nurulhuda Mastuki
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia
| | - Siti Munirah Mohd Faudzi
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang, Malaysia
| | - Wan Norhamidah Wan Ibrahim
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, Serdang, Malaysia
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia
| | - Mohammad Noor Amal Azmai
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, Serdang, Malaysia
- Aquatic Animal Health and Therapeutics Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia
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Yan Z, Li Y, Lin A, Yang X, Lu Z, Zhang H, Tang J, Zhao J, Niu D, Zhang T, Zhao X, Li K. Development of a trace quantitative method to investigate caffeine distribution in the Yellow and Bohai Seas, China, and assessment of its potential neurotoxic effect on fish larvae. MARINE POLLUTION BULLETIN 2023; 195:115492. [PMID: 37690407 DOI: 10.1016/j.marpolbul.2023.115492] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/30/2023] [Accepted: 09/02/2023] [Indexed: 09/12/2023]
Abstract
Caffeine is an emerging contaminant in aquatic environments. The study utilized a validated method to investigate the presence and distribution of caffeine in the surface water of the Yellow and Bohai Seas, urban rivers, and the Yantai estuary area. The analytical method conforms to EPA guidelines and exhibits a limit of quantification that is 200 times lower than that of prior investigations. The study revealed that the highest concentration of 1436.4 ng/L was found in convergence of ocean currents in the Yellow and Bohai Seas. The presence of larger populations and the process of urban industrialization have been observed to result in elevated levels of caffeine in offshore regions, confirming that caffeine can serve as a potential indicator of anthropogenic contamination. Fish larvae exhibited hypoactivity in response to caffeine exposure at environmentally relevant concentrations. The study revealed that caffeine pollution can have adverse effects on marine and offshore ecosystems. This emphasizes the importance of decreasing neurotoxic pollution in the aquatic environment.
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Affiliation(s)
- Zhi Yan
- School of Ocean, Yantai University, Yantai 264005, China; Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Yaxi Li
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ainuo Lin
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiao Yang
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhen Lu
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Huilin Zhang
- Center for Mitochondria and Healthy Aging, College of Life Science, Yantai University, Yantai 264005, China
| | - Jianhui Tang
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Jianmin Zhao
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Donglei Niu
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Tianyu Zhang
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaodong Zhao
- School of Ocean, Yantai University, Yantai 264005, China
| | - Ke Li
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China.
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7
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von Hellfeld R, Gade C, Baumann L, Leist M, Braunbeck T. The sensitivity of the zebrafish embryo coiling assay for the detection of neurotoxicity by compounds with diverse modes of action. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27662-2. [PMID: 37213015 DOI: 10.1007/s11356-023-27662-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 05/11/2023] [Indexed: 05/23/2023]
Abstract
In the aim to determine neurotoxicity, new methods are being validated, including tests and test batteries comprising in vitro and in vivo approaches. Alternative test models such as the zebrafish (Danio rerio) embryo have received increasing attention, with minor modifications of the fish embryo toxicity test (FET; OECD TG 236) as a tool to assess behavioral endpoints related to neurotoxicity during early developmental stages. The spontaneous tail movement assay, also known as coiling assay, assesses the development of random movement into complex behavioral patterns and has proven sensitive to acetylcholine esterase inhibitors at sublethal concentrations. The present study explored the sensitivity of the assay to neurotoxicants with other modes of action (MoAs). Here, five compounds with diverse MoAs were tested at sublethal concentrations: acrylamide, carbaryl, hexachlorophene, ibuprofen, and rotenone. While carbaryl, hexachlorophene, and rotenone consistently induced severe behavioral alterations by ~ 30 h post fertilization (hpf), acrylamide and ibuprofen expressed time- and/or concentration-dependent effects. At 37-38 hpf, additional observations revealed behavioral changes during dark phases with a strict concentration-dependency. The study documented the applicability of the coiling assay to MoA-dependent behavioral alterations at sublethal concentrations, underlining its potential as a component of a neurotoxicity test battery.
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Affiliation(s)
- Rebecca von Hellfeld
- School of Biological Sciences, University of Aberdeen, 23 St Machar Drive, Aberdeen, AB24 3UK, UK.
- National Decommissioning Centre, Main Street, Ellon, AB41 6AA, UK.
- Aquatic Ecology and Toxicology, Centre for Organismal Studies, University of Heidelberg, Im Neuenheimer Feld 504, 69120, Heidelberg, Germany.
| | - Christoph Gade
- School of Biological Sciences, University of Aberdeen, 23 St Machar Drive, Aberdeen, AB24 3UK, UK
- National Decommissioning Centre, Main Street, Ellon, AB41 6AA, UK
- Aquatic Ecology and Toxicology, Centre for Organismal Studies, University of Heidelberg, Im Neuenheimer Feld 504, 69120, Heidelberg, Germany
| | - Lisa Baumann
- Aquatic Ecology and Toxicology, Centre for Organismal Studies, University of Heidelberg, Im Neuenheimer Feld 504, 69120, Heidelberg, Germany
- Faculty of Science, Environmental Health & Toxicology, Vrije Universiteit Amsterdam, De Boelelaan 1105, 1081 HV, Amersterdam, Netherlands
| | - Marcel Leist
- In Vitro Toxicology and Biomedicine, Department Inaugurated By the Doerenkamp-Zbinden Foundation, University of Konstanz, Universitätsstraße 10, 78464, Constance, Germany
| | - Thomas Braunbeck
- Aquatic Ecology and Toxicology, Centre for Organismal Studies, University of Heidelberg, Im Neuenheimer Feld 504, 69120, Heidelberg, Germany
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8
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Agues-Barbosa T, de Souza AM, de Lima JNG, Luchiari AC. Long-term behavioral alterations following embryonic alcohol exposure in three zebrafish populations. Neurotoxicology 2023; 96:174-183. [PMID: 37120037 DOI: 10.1016/j.neuro.2023.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 04/24/2023] [Accepted: 04/26/2023] [Indexed: 05/01/2023]
Abstract
Fetal alcohol exposure may lead to a condition known as fetal alcohol spectrum disorder (FASD), which comprises a set of consequences, including cognitive and behavioral impairments. Although zebrafish has been applied as a reliable model for studying FASD, there is no approach to the disorder's ontogeny and population differences. Here, we evaluated the behavioral outcomes of AB, Outbred (OB), and Tübingen (TU) zebrafish populations embryonically exposed to alcohol throughout the development to the adult stage. We exposed 24hpf eggs to 0%, 0.5%, or 1.0% alcohol for 2h. Fish were let grow and locomotor and anxiety-like behaviors were tested in a novel tank at larval - 6dpf, juvenile - 45dpf, and adult- 90dpf stages. At 6dpf, both AB and OB treated with 1.0% alcohol showed hyperactivity, while 0.5% and 1.0% TU fish exhibited hypolocomotion. At 45dpf, AB and TU fish maintained the larval pattern of locomotion. At the adult stage - 90dpf, both AB and TU populations showed increased locomotor activity and anxiogenic responses, while the OB population did not show altered behavior. Our results show for the first time that zebrafish populations exhibit behavioral differences in response to embryonic alcohol exposure and that it varies along animals' ontogeny. AB fish showed the most consistent behavioral pattern through developmental stages, TU fish showed behavioral changes only in adulthood, and OB population showed high interindividual variability. These data reinforce that different populations of zebrafish are better adapted to translational studies, offering reliable results in contrast to domesticated OB populations obtained from farms, which exhibit more variable genomes.
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Affiliation(s)
- Thaís Agues-Barbosa
- Department of Physiology & Behavior, Universidade Federal do Rio Grande do Norte, Rio Grande do Norte, Brazil
| | - Augusto Monteiro de Souza
- Department of Cell Biology and Genetics, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | | | - Ana Carolina Luchiari
- Department of Physiology & Behavior, Universidade Federal do Rio Grande do Norte, Rio Grande do Norte, Brazil.
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9
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Zhuang J, Pan ZJ, Qin Y, Liang H, Zhang WF, Sun ZY, Shi HB. Evaluation of BDE-47-induced neurodevelopmental toxicity in zebrafish embryos. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:54022-54034. [PMID: 36869944 DOI: 10.1007/s11356-023-26170-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 02/23/2023] [Indexed: 06/18/2023]
Abstract
There are growing concerns about the neurodevelopmental toxicity of polybrominated diphenyl ethers (PBDEs), but the toxicological phenotypes and mechanisms are not well elucidated. Here, zebrafish (Danio rerio) were exposed to 2,2',4,4'-tetrabromodiphenyl ether (BDE-47) from 4 to 72 h post-fertilization (hpf). The results showed that BDE-47 stimulated the production of dopamine and 5-hydroxytryptamine, but inhibited expression of Nestin, GFAP, Gap43, and PSD95 in 24 hpf embryos. Importantly, we unraveled the inhibitory effects of BDE-47 on neural crest-derived melanocyte differentiation and melanin syntheses process, evidenced by disrupted expression of wnt1, wnt3, sox10, mitfa, tyrp1a, tyrp1b, tryp2, and oca2 gene in 72 hpf embryos and decreased tyrosinase activities in embryos at 48 and 72 hpf. The transcriptional activities of myosin VAa, kif5ba, rab27a, mlpha, and cdc42 genes, which are associated with intracellular transport process, were also disturbed during zebrafish development. Ultimately, these alterations led to fast spontaneous movement and melanin accumulation deficit in zebrafish embryos upon BDE-47 exposure. Our results provide an important extension for understanding the neurodevelopmental effects of PBDEs and facilitate the comprehensive evaluation of neurotoxicity in embryos.
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Affiliation(s)
- Juan Zhuang
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Jiangsu Engineering Laboratory for Breeding of Special Aquatic Organisms, Huaiyin Normal University, 111 Changjiang West Road, Huaian, 223300, Jiangsu, China.
| | - Zheng-Jun Pan
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Jiangsu Engineering Laboratory for Breeding of Special Aquatic Organisms, Huaiyin Normal University, 111 Changjiang West Road, Huaian, 223300, Jiangsu, China
| | - Ying Qin
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Jiangsu Engineering Laboratory for Breeding of Special Aquatic Organisms, Huaiyin Normal University, 111 Changjiang West Road, Huaian, 223300, Jiangsu, China
| | - Hui Liang
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Jiangsu Engineering Laboratory for Breeding of Special Aquatic Organisms, Huaiyin Normal University, 111 Changjiang West Road, Huaian, 223300, Jiangsu, China
| | - Wen-Feng Zhang
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Jiangsu Engineering Laboratory for Breeding of Special Aquatic Organisms, Huaiyin Normal University, 111 Changjiang West Road, Huaian, 223300, Jiangsu, China
| | - Ze-Yu Sun
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Jiangsu Engineering Laboratory for Breeding of Special Aquatic Organisms, Huaiyin Normal University, 111 Changjiang West Road, Huaian, 223300, Jiangsu, China
| | - Han-Bo Shi
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Jiangsu Engineering Laboratory for Breeding of Special Aquatic Organisms, Huaiyin Normal University, 111 Changjiang West Road, Huaian, 223300, Jiangsu, China
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10
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Lu L, Zhang X, Kang Y, Xiong Z, Zhang K, Xu XT, Bai LP, Li HG. Novel coumarin derivatives as potential tyrosinase inhibitors: Synthesis, binding analysis and biological evaluation. ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023] Open
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11
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Wang Z, Li K, Xu Y, Song Z, Lan X, Pan C, Zhang S, Foulkes NS, Zhao H. Ferroptosis contributes to nickel-induced developmental neurotoxicity in zebrafish. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 858:160078. [PMID: 36372175 DOI: 10.1016/j.scitotenv.2022.160078] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/29/2022] [Accepted: 11/05/2022] [Indexed: 06/16/2023]
Abstract
Nickel (Ni) is a widely utilized heavy metal that can cause environmental pollution and health hazards. Its safety has attracted the attention of both the environmental ecology and public health fields. While the central nervous system (CNS) is one of the main targets of Ni, its neurotoxicity and the underlying mechanisms remain unclear. Here, by taking advantage of the zebrafish model for live imaging, genetic analysis and neurobehavioral studies, we reveal that the neurotoxic effects induced by exposure to environmentally relevant levels of Ni are closely related to ferroptosis, a newly-described form of iron-mediated cell death. In vivo two-photon imaging, neurobehavioral analysis and transcriptome sequencing consistently demonstrate that early neurodevelopment, neuroimmune function and vasculogenesis in zebrafish larvae are significantly affected by environmental Ni exposure. Importantly, exposure to various concentrations of Ni activates the ferroptosis pathway, as demonstrated by physiological/biochemical tests, as well as the expression of ferroptosis markers. Furthermore, pharmacological intervention of ferroptosis via deferoxamine (DFO), a classical iron chelating agent, strongly implicates iron dyshomeostasis and ferroptosis in these Ni-induced neurotoxic effects. Thus, this study elucidates the cellular and molecular mechanisms underlying Ni neurotoxicity, with implications for our understanding of the physiologically damaging effects of other environmental heavy metal pollutants.
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Affiliation(s)
- Zuo Wang
- School of Life Sciences, Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, Gansu Province, China
| | - Kemin Li
- School of Life Sciences, Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, Gansu Province, China
| | - Yanyi Xu
- School of Life Sciences, Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, Gansu Province, China
| | - Zan Song
- School of Life Sciences, Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, Gansu Province, China
| | - Xianyong Lan
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, No. 22 Xinong Road, Yangling 712100, Shaanxi Province, China
| | - Chuanying Pan
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, No. 22 Xinong Road, Yangling 712100, Shaanxi Province, China
| | - Shengxiang Zhang
- School of Life Sciences, Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, Gansu Province, China
| | - Nicholas S Foulkes
- Institute of Biological and Chemical Systems, Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Haiyu Zhao
- School of Life Sciences, Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, Gansu Province, China.
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12
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Zheng S, Zhang Q, Wu R, Shi X, Peng J, Tan W, Huang W, Wu K, Liu C. Behavioral changes and transcriptomic effects at embryonic and post-embryonic stages reveal the toxic effects of 2,2',4,4'-tetrabromodiphenyl ether on neurodevelopment in zebrafish (Danio rerio). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 248:114310. [PMID: 36423367 DOI: 10.1016/j.ecoenv.2022.114310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 11/13/2022] [Accepted: 11/16/2022] [Indexed: 11/22/2022]
Abstract
Polybrominated biphenyl ethers (PBDEs) are new persistent pollutants that are widely exist in the environment and have many toxic effects. However, their toxicity mechanisms on neurodevelopment are still unclear. In this study, zebrafish embryos were exposed to 2, 2', 4, 4'-tetrabromodiphenyl ether (BDE-47) (control, 10, 50 and 100 μg/L) at 2 h postfertilization (hpf) - 7 dpf. Locomotion analysis indicated that BDE-47 increased spontaneous coiling activity in zebrafish embryos under high-intensity light stimuli and decreased locomotor in zebrafish larvae. RNA-Seq analysis revealed that most of the up-regulated pathways were related to the metabolism of cells and tissues, while the down-regulated pathways were related to neurodevelopment. Consistent with the locomotion and KEGG results, BDE-47 affected the expression of genes for central nervous system (gfap, mbpa, bdnf & pomcb), early neurogenesis (neurog1 & elavl3), and axonal development (tuba1a, tuba1b, tuba1c, syn2a, gap43 & shha). Furthermore, BDE-47 interfered with gene expression of the Wnt signaling pathway, especially during embryonic stages, suggesting that the mechanisms of BDE-47 toxicity to zebrafish at various stages of neurodevelopment may be different. In summary, early neurodevelopment effects and metabolic disturbances may have contributed to the abnormal neurobehavioral changes induced by BDE-47 in zebrafish embryos/larvae, suggesting the neurodevelopmental toxicity of BDE-47.
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Affiliation(s)
- Shukai Zheng
- Department of Burns and Plastic Surgery, The Second Affiliated Hospital of Shantou University Medical College, Shantou 515041, Guangdong, China
| | - Qiong Zhang
- Department of Preventive Medicine, Shantou University Medical College, Shantou 515041, Guangdong, China
| | - Ruotong Wu
- School of Life Science, Xiamen University, Xiamen 361102, Fujian, China
| | - Xiaoling Shi
- Department of Preventive Medicine, Shantou University Medical College, Shantou 515041, Guangdong, China
| | - Jiajun Peng
- Department of Preventive Medicine, Shantou University Medical College, Shantou 515041, Guangdong, China
| | - Wei Tan
- Department of Preventive Medicine, Shantou University Medical College, Shantou 515041, Guangdong, China
| | - Wenlong Huang
- Department of Preventive Medicine, Shantou University Medical College, Shantou 515041, Guangdong, China
| | - Kusheng Wu
- Department of Preventive Medicine, Shantou University Medical College, Shantou 515041, Guangdong, China
| | - Caixia Liu
- Department of Preventive Medicine, Shantou University Medical College, Shantou 515041, Guangdong, China
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13
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Lanzarin GAB, Venâncio CAS, Félix LM, Monteiro SM. Evaluation of the developmental effects of a glyphosate-based herbicide complexed with copper, zinc, and manganese metals in zebrafish. CHEMOSPHERE 2022; 308:136430. [PMID: 36113654 DOI: 10.1016/j.chemosphere.2022.136430] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 08/07/2022] [Accepted: 09/09/2022] [Indexed: 06/15/2023]
Abstract
The use of glyphosate-based herbicides (GBH) has increased dramatically, being currently the most used herbicides worldwide. Glyphosate acts as a chelating agent, capable of chelate metals. The synergistic effects of metals and agrochemicals may pose an environmental problem as they have been shown to induce neurological abnormalities and behavioural changes in aquatic species. However, as their ecotoxicity effects are poorly understood, evaluating the impacts of GBH complexed with metals is an ecological priority. The main objective of the study was to evaluate the potentially toxic effects caused by exposure to a GBH (1 μg a.i. mL-1), alone or complexed with metals (Copper, Manganese, and Zinc (100 μg L-1)), at environmentally relevant concentrations, during the early period of zebrafish (Danio rerio) embryo development (96 h post-fertilization), a promising model for in vivo developmental studies. To clarify the mechanisms of toxicity involved, lethal and sublethal development endpoints were assessed. At the end of the exposure, biochemical and cell death parameters were evaluated and, 24 h later, different behavioural responses were assessed. The results showed that metals induced higher levels of toxicity. Copper caused high mortality, low hatching, malformations, and changes in biochemical parameters, such as decreased Catalase (CAT) activity, increased Glutathione Peroxidase (GPx), Glutathione S-Transferase (GST), reduced Glutathione (GSH) and decreased Acetylcholinesterase (AChE) activity, also inducing apoptosis and changes in larval behaviour. Manganese increased the activity of SODs enzymes. Zinc increased mortality, reactive oxygen species (ROS) levels, superoxide dismutase activity (SODs) and caused a decrease in AChE activity. Embryos/larvae exposed to the combination of GBH/Metal also showed teratogenic effects during their development but in smaller proportions than the metal alone. Although more studies are needed, the results suggest that GBH may interfere with the mechanisms of metal toxicity at the biochemical, physiological, and behavioural levels of zebrafish.
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Affiliation(s)
- Germano A B Lanzarin
- Centre for the Research and Technology of Agro-Environment and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.
| | - Carlos A S Venâncio
- Centre for the Research and Technology of Agro-Environment and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal; Department of Animal Science, School of Agrarian and Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal; Inov4Agro, Institute for Innovation, Capacity Building and Sustainability of Agri-food Production, University of Trás-os Montes and Alto Douro (UTAD), Vila Real, Portugal
| | - Luís M Félix
- Centre for the Research and Technology of Agro-Environment and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal; Inov4Agro, Institute for Innovation, Capacity Building and Sustainability of Agri-food Production, University of Trás-os Montes and Alto Douro (UTAD), Vila Real, Portugal
| | - Sandra M Monteiro
- Centre for the Research and Technology of Agro-Environment and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal; Department of Biology and Environment, School of Life and Environmental Sciences, University of Trás-os Montes and Alto Douro (UTAD), Vila Real, Portugal; Inov4Agro, Institute for Innovation, Capacity Building and Sustainability of Agri-food Production, University of Trás-os Montes and Alto Douro (UTAD), Vila Real, Portugal
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14
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von Hellfeld R, Pannetier P, Braunbeck T. Specificity of time- and dose-dependent morphological endpoints in the fish embryo acute toxicity (FET) test for substances with diverse modes of action: the search for a "fingerprint". ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:16176-16192. [PMID: 34643865 PMCID: PMC8827326 DOI: 10.1007/s11356-021-16354-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 09/01/2021] [Indexed: 06/13/2023]
Abstract
The fish embryo acute toxicity (FET) test with the zebrafish (Danio rerio) embryo according to OECD TG 236 was originally developed as an alternative test method for acute fish toxicity testing according to, e.g., OECD TG 203. Given the versatility of the protocol, however, the FET test has found application beyond acute toxicity testing as a common tool in environmental hazard and risk assessment. Whereas the standard OECD guideline is restricted to four core endpoints (coagulation as well as lack of somite formation, heartbeat, and tail detachment) for simple, rapid assessment of acute toxicity, further endpoints can easily be integrated into the FET test protocol. This has led to the hypothesis that an extended FET test might allow for the identification of different classes of toxicants via a "fingerprint" of morphological observations. To test this hypothesis, the present study investigated a set of 18 compounds with highly diverse modes of action with respect to acute and sublethal endpoints. Especially at higher concentrations, most observations proved toxicant-unspecific. With decreasing concentrations, however, observations declined in number, but gained in specificity. Specific observations may at best be made at test concentrations ≤ EC10. The existence of a "fingerprint" based on morphological observations in the FET is, therefore, highly unlikely in the range of acute toxicity, but cannot be excluded for experiments at sublethal concentrations.
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Affiliation(s)
- Rebecca von Hellfeld
- Center for Organismal Studies, Aquatic Ecology and Toxicology Section, University of Heidelberg, Im Neuenheimer Feld 504, 69120, Heidelberg, Germany.
- University of Aberdeen, Institute of Biological and Environmental Science, 23 St Machar Drive, AB24 3UU, Aberdeen, UK.
| | - Pauline Pannetier
- Center for Organismal Studies, Aquatic Ecology and Toxicology Section, University of Heidelberg, Im Neuenheimer Feld 504, 69120, Heidelberg, Germany
| | - Thomas Braunbeck
- Center for Organismal Studies, Aquatic Ecology and Toxicology Section, University of Heidelberg, Im Neuenheimer Feld 504, 69120, Heidelberg, Germany.
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15
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Chatterjee D, Mahabir S, Chatterjee D, Gerlai R. Lasting effects of mild embryonic ethanol exposure on voltage-gated ion channels in adult zebrafish brain. Prog Neuropsychopharmacol Biol Psychiatry 2021; 110:110327. [PMID: 33864849 DOI: 10.1016/j.pnpbp.2021.110327] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 02/28/2021] [Accepted: 04/09/2021] [Indexed: 02/06/2023]
Abstract
The zebrafish is increasingly well utilized in alcohol research, particularly in modeling human fetal alcohol spectrum disorders (FASD). FASD results from alcohol reaching the developing fetus intra utero, a completely preventable yet prevalent and devastating life-long disorder. The hope with animal models, including the zebrafish, is to discover the mechanisms underlying this disease, which may aid treatment and diagnosis. In the past, we developed an embryonic alcohol exposure regimen that is aimed at mimicking the milder, and most prevalent, forms of FASD in zebrafish. We have found numerous lasting alterations in behavior, neurochemistry, neuronal markers and glial cell phenotypes in this zebrafish FASD model. Using the same model (2 h long bath immersion of 24 h post-fertilization old zebrafish eggs into 1% vol/vol ethanol), here we conduct a proof of concept analysis of voltage-gated cation channels, investigating potential embryonic alcohol induced changes in L-, T- and N- type Ca++ and the SCN1A Na+ channels using Western blot followed by immunohistochemical analysis of the same channels in the pallium and cerebellum of the zebrafish brain. We report significant reduction of expression in all four channel proteins using both methods. We conclude that reduced voltage-gated cation channel expression induced by short and low dose exposure to alcohol during embryonic development of zebrafish may contribute to the previously demonstrated lasting behavioral and neurobiological changes.
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Affiliation(s)
| | - Samantha Mahabir
- Department of Psychology, University of Toronto, Mississauga, Ontario, Canada
| | | | - Robert Gerlai
- Department of Psychology, University of Toronto, Mississauga, Ontario, Canada.
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16
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Pinheiro-da-Silva J, Agues-Barbosa T, Luchiari AC. Embryonic Exposure to Ethanol Increases Anxiety-Like Behavior in Fry Zebrafish. Alcohol Alcohol 2021; 55:581-590. [PMID: 32886092 DOI: 10.1093/alcalc/agaa087] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/16/2020] [Accepted: 07/31/2020] [Indexed: 12/18/2022] Open
Abstract
AIMS Fetal alcohol spectrum disorder (FASD) is an umbrella term to describe the effects of ethanol (Eth) exposure during embryonic development, including several conditions from malformation to cognitive deficits. Zebrafish (Danio rerio) are a translational model popularly applied in brain disorders and drug screening studies due to its genetic and physiology homology to humans added to its transparent eggs and fast development. In this study, we investigated how early ethanol exposure affects zebrafish behavior during the initial growth phase. METHODS Fish eggs were exposed to 0.0 (control), 0.25 and 0.5% ethanol at 24 h post-fertilization. Later, fry zebrafish (10 days old) were tested in a novel tank task and an inhibitory avoidance protocol to inquire about morphology and behavioral alterations. RESULTS Analysis of variance showed that ethanol doses of 0.25 and 0.5% do not cause morphological malformations and did not impair associative learning but increased anxiety-like behavior responses and lower exploratory behavior when compared to the control. CONCLUSION Our results demonstrate that one can detect behavioral abnormalities in the zebrafish induced by embryonic ethanol as early as 10 days post-fertilization and that alcohol increases anxious behavior during young development in zebrafish.
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Affiliation(s)
| | - Thais Agues-Barbosa
- Department of Physiology and Behavior, Universidade Federal do Rio Grande do Norte, Rio Grande do Norte, Brazil
| | - Ana Carolina Luchiari
- Department of Physiology and Behavior, Universidade Federal do Rio Grande do Norte, Rio Grande do Norte, Brazil
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17
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Köktürk M, Çomaklı S, Özkaraca M, Alak G, Atamanalp M. Teratogenic and Neurotoxic Effects of n-Butanol on Zebrafish Development. JOURNAL OF AQUATIC ANIMAL HEALTH 2021; 33:94-106. [PMID: 33780052 DOI: 10.1002/aah.10123] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 12/21/2020] [Indexed: 06/12/2023]
Abstract
In recent years, n-butanol, a type of alcohol, has been widely used from the chemical industry to the food industry. In this study, toxic effects of n-butanol's different concentrations (10, 50, 250, 500, 750, 1,000, and 1,250 mg/L) in Zebrafish Danio rerio embryos and larvae were investigated. For this purpose, Zebrafish embryos were exposed to n-butanol in acute semistatic applications. Teratogenic effects such as cardiac edema, scoliosis, lordosis, head development abnormality, yolk sac edema, and tail abnormality were determined at different time intervals (24, 48, 72, 96, and 120 h). Additionally, histopathological abnormalities such as vacuole formation in brain tissue and necrosis in liver tissue were observed at high doses (500, 750, and 1,000 mg/L) in all treatment groups at 96 h. It was determined that heart rate decreased at 48, 72, and 96 h due to an increase in concentration. In addition, alcohol-induced eye size reduction (microphthalmia) and single eye formation (cyclopia) are also among the effects observed in our research findings. In conclusion, n-butanol has been observed to cause intense neurotoxic, teratogenic, and cardiotoxic effects in Zebrafish embryos and larvae.
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Affiliation(s)
- Mine Köktürk
- Department of Organic Farming, School of Applied Science, Igdır University, 76000, Igdır, Turkey
| | - Selim Çomaklı
- Department of Pathology, Faculty of Veterinary Medicine, Ataturk University, 25030, Erzurum, Turkey
| | - Mustafa Özkaraca
- Department of Pathology, Faculty of Veterinary Medicine, Cumhuriyet University, 58140, Sivas, Turkey
| | - Gonca Alak
- Department of Aquaculture, Faculty of Fisheries, Ataturk University, 25030, Erzurum, Turkey
| | - Muhammed Atamanalp
- Department of Aquaculture, Faculty of Fisheries, Ataturk University, 25030, Erzurum, Turkey
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18
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Schwartz AV, Sant KE, Navarrete J, George UZ. Mathematical modeling of the interaction between yolk utilization and fish growth in zebrafish, Danio rerio. Development 2021; 148:261800. [PMID: 33960383 DOI: 10.1242/dev.193508] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 03/29/2021] [Indexed: 12/12/2022]
Abstract
Optimal embryonic development plays a major role in the health of an individual beyond the developmental stage. Nutritional perturbation during development is associated with cardiovascular and metabolic disease later in life. With both nutritional uptake and overall growth being risk factors for eventual health, it is necessary to understand not only the behavior of the processes during development but also their interactions. In this study, we used differential equations, image analyses, curve fittings, parameter estimation and laboratory experiments to quantify the rate of yolk absorption and its effect on early development of a vertebrate model (Danio rerio). Findings from this study establish a nonlinear functional relationship between nutrient absorption and early fish growth. We found that the rate of change in fish length and yolk utilization is logistic, that is the yolk decays rapidly for a period of time before leveling out. An interesting finding from this study is that yolk utilization reaches its maximum at 84 h post-fertilization. We validated our mathematical models against experimental observations, making them powerful tools for replication and future simulations.
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Affiliation(s)
- Ashley V Schwartz
- Department of Mathematics and Statistics, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, USA
| | - Karilyn E Sant
- School of Public Health, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, USA
| | - Julian Navarrete
- School of Public Health, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, USA
| | - Uduak Z George
- Department of Mathematics and Statistics, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, USA
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19
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Schaidhauer FG, Caetano HA, da Silva GP, da Silva RS. Contributions of Zebrafish Studies on the Behavioural Consequences of Early Alcohol Exposure: A Systematic Review. Curr Neuropharmacol 2021; 20:579-593. [PMID: 33913405 DOI: 10.2174/1570159x19666210428114317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 04/17/2021] [Accepted: 04/22/2021] [Indexed: 12/09/2022] Open
Abstract
BACKGROUND The consequences of mild to severe exposure to alcohol during brain development is still a matter of debate and scientific investigation. The long-term behavioural effects of ethanol exposure have been related to impaired social skills and cognition. Zebrafish have become a suitable animal model to investigate the effects of early ethanol exposure because it is very feasible to promote drug delivery during early development. OBJECTIVE The goal of the current report is to review existing behavioural studies addressing the impact of early alcohol exposure using zebrafish to determine whether these models resemble the behavioural effects of early alcohol exposure in humans. METHODS A comprehensive search of biomedical databases was performed using the operation order: "ZEBRAFISH AND BEHAV* AND (ETHANOL OR ALCOHOL)". The eligibility of studies was determined using the PICOS strategy, contemplating the population as zebrafish, intervention as exposure to ethanol, comparison with a non-exposed control animal, and outcomes as behavioural parameters. RESULTS The systematic search returned 29 scientific articles as eligible. The zebrafish is presented as a versatile animal model that is useful to study FASD short and long-term behaviour impairments, such as anxiety, impaired sociability, aggressiveness, learning problems, memory impairment, seizure susceptibility, sleep disorders, motivational problems, and addiction. CONCLUSION This systematic review serves to further promote the use of zebrafish as a model system to study the pathophysiological and behavioural consequences of early alcohol exposure.
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Affiliation(s)
- Flávia Gheller Schaidhauer
- Laboratório de Neuroquímica e Psicofarmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Higor Arruda Caetano
- Laboratório de Neuroquímica e Psicofarmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Guilherme Pietro da Silva
- Laboratório de Neuroquímica e Psicofarmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Rosane Souza da Silva
- Laboratório de Neuroquímica e Psicofarmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
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20
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Pullaguri N, Grover P, Abhishek S, Rajakumara E, Bhargava Y, Bhargava A. Triclosan affects motor function in zebrafish larva by inhibiting ache and syn2a genes. CHEMOSPHERE 2021; 266:128930. [PMID: 33223207 DOI: 10.1016/j.chemosphere.2020.128930] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/31/2020] [Accepted: 11/08/2020] [Indexed: 06/11/2023]
Abstract
The widespread use of triclosan in personal care products as an antimicrobial agent is leading to its alarming tissue-bioaccumulation including human brain. However, knowledge of its potential effects on the vertebrate nervous system is still limited. Here, we hypothesized that sublethal triclosan concentrations are potent enough to alter motor neuron structure and function in zebrafish embryos exposed for prolonged duration. In this study, zebrafish embryos were used as vertebrate-animal model. Prolonged exposure (up to 4 days) of 0.6 mg/L (LC50, 96 h) and 0.3 mg/L (<LC50, Sublethal) triclosan produced aberrations in motor neuron innervations in skeletal muscles and reduced touch-evoked escape response in zebrafish larvae. This suggests motor dysfunction in treated embryos. To further explore the mechanisms of triclosan induced neurotoxicity, we determined the enzyme activity of acetylcholinesterase (AChE) and the expression of acetylcholinesterase (ache), myelin basic protein (mbp) and synapsin IIa (syn2a) genes which play an important role in the neural development and synaptic transmission. The ache and syn2a genes were down-regulated in triclosan treated larvae without any significant changes in mbp gene expression. At functional level, we observed a decrease in the AChE activity. Furthermore, docking results showed that triclosan can form a stable interaction with binding pocket of AChE and perhaps it can compete with natural acetylcholine for direct binding to AChE thereby inhibiting it and affecting cholinergic transmission. Therefore, triclosan can be regarded as a neurotoxic agent even at sublethal concentrations. Overall, the growing toxicological evidence against triclosan including ours suggest caution in its widespread use.
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Affiliation(s)
- Narasimha Pullaguri
- Department of Biotechnology, Indian Institute of Technology Hyderabad (IITH), Kandi, Sangareddy, Telangana, 502285, India
| | - Poonam Grover
- Department of Biotechnology, Indian Institute of Technology Hyderabad (IITH), Kandi, Sangareddy, Telangana, 502285, India
| | - Suman Abhishek
- Macromolecular Structural Biology Lab, Department of Biotechnology, Indian Institute of Technology Hyderabad (IITH), Kandi, Sangareddy, Telangana, 502285, India
| | - Eerappa Rajakumara
- Macromolecular Structural Biology Lab, Department of Biotechnology, Indian Institute of Technology Hyderabad (IITH), Kandi, Sangareddy, Telangana, 502285, India
| | - Yogesh Bhargava
- Molecular Engineering and Imaging Lab, School of Biological Sciences, Dr Harisingh Gour Central University, Sagar, MP, 470003, India
| | - Anamika Bhargava
- Department of Biotechnology, Indian Institute of Technology Hyderabad (IITH), Kandi, Sangareddy, Telangana, 502285, India.
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21
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Chatterjee D, Mahabir S, Chatterjee D, Gerlai R. Lasting alterations induced in glial cell phenotypes by short exposure to alcohol during embryonic development in zebrafish. Addict Biol 2021; 26:e12867. [PMID: 31919968 DOI: 10.1111/adb.12867] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 12/04/2019] [Accepted: 12/05/2019] [Indexed: 12/13/2022]
Abstract
Despite the known teratogenic effects of alcohol (ethanol) on the developing human fetus, the prevalence of fetal alcohol spectrum disorder (FASD) is not decreasing. Appropriate treatment for this life-long disease has not been developed, and even diagnostic biomarkers are unavailable. FASD remains a large unmet medical need. Numerous animal models have been developed to mimic FASD and study potential underlying biological mechanisms. However, most of these models focused on neuronal phenotypes. Given that glial cells represent the majority of cells in the vertebrate brain, and given the increasingly appreciated roles they play in a myriad of neuronal functions as well as CNS disorders, we decided to investigate potential embryonic alcohol exposure induced changes in them. Building upon a previously introduced zebrafish model of milder and most prevalent forms of FASD, we investigated the effect of a 2-hour-long exposure to alcohol (1% vol/vol bath concentration) employed at the 24th hour postfertilization stage of development of zebrafish on a number of glial cell-related phenotypes. We studied oligodendrocyte, astrocyte as well as microglia-related phenotypes using immunohistochemistry, lipid, and enzyme activity analyses. We report significant changes in wide-spread glial cell phenotypes induced by embryonic alcohol exposure in the zebrafish brain and conclude that the zebrafish will advance our understanding of the mechanisms of this devastating disorder.
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Affiliation(s)
| | - Samantha Mahabir
- Department of Cell and Systems Biology University of Toronto Toronto Canada
| | - Diptendu Chatterjee
- Department of Psychology University of Toronto Mississauga Mississauga Canada
| | - Robert Gerlai
- Department of Cell and Systems Biology University of Toronto Toronto Canada
- Department of Psychology University of Toronto Mississauga Mississauga Canada
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22
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Du W, Chen X, Shi M, Bian F, Zhao Z. Ethanol affects behavior and HPA axis activity during development in zebrafish larvae. Sci Rep 2020; 10:21402. [PMID: 33293624 PMCID: PMC7722840 DOI: 10.1038/s41598-020-78573-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 11/23/2020] [Indexed: 12/28/2022] Open
Abstract
Recent studies have shown that long-term alcohol intake from food can lead to numerous mental disorders in humans, and the social and health effects of excessive intake of alcohol currently represent serious problems for governments and families worldwide. However, to date, it has not been determined how alcohol affects the hypothalamic-pituitary-adrenal (HPA) axis. The zebrafish offers a good model for studying the toxicology of food-grade ethanol. In the present study, using zebrafish larvae exposed to 1% ethanol, we performed zebrafish behavioral analysis. Samples were collected for enzyme-linked immunosorbent assay (ELISA) and quantitative real time-polymerase chain reaction (qRT-PCR) experiments, and statistical analysis was performed. We found that ethanol decreased the locomotor activity of zebrafish larvae, which showed a more intense reaction to external stimuli. Ethanol also increased the level of HPA axis hormones in zebrafish larvae, influenced the level of neurotransmitters, and altered the expression of key genes in neurotransmitter metabolism. Ethanol exposure affects zebrafish behavior, increases the level of HPA axis hormones in zebrafish larvae, affects the level of neurotransmitters, and affects the expression of key genes in dopamine and serotonin metabolism. These findings may help to elucidate the effects of ethanol on HPA axis activity.
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Affiliation(s)
- Wenxiao Du
- College of Life Science, Yantai University, Laishan District Spring Road No. 30, Yantai, 264005, Shandong, People's Republic of China.
| | - Xiaoli Chen
- The Fruit Trees Work Station of Penglai, Penglai Dengzhou Road, No. 67, Yantai, 265600, Shandong, People's Republic of China
| | - Min Shi
- College of Life Science, Yantai University, Laishan District Spring Road No. 30, Yantai, 264005, Shandong, People's Republic of China
| | - Fuhua Bian
- College of Life Science, Yantai University, Laishan District Spring Road No. 30, Yantai, 264005, Shandong, People's Republic of China
| | - Zhenjun Zhao
- College of Life Science, Yantai University, Laishan District Spring Road No. 30, Yantai, 264005, Shandong, People's Republic of China.
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23
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Collier AD, Khalizova N, Chang GQ, Min S, Campbell S, Gulati G, Leibowitz SF. Involvement of Cxcl12a/Cxcr4b Chemokine System in Mediating the Stimulatory Effect of Embryonic Ethanol Exposure on Neuronal Density in Zebrafish Hypothalamus. Alcohol Clin Exp Res 2020; 44:2519-2535. [PMID: 33067812 DOI: 10.1111/acer.14482] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 10/08/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Embryonic exposure to ethanol (EtOH) produces marked disturbances in neuronal development and alcohol-related behaviors, with low-moderate EtOH doses stimulating neurogenesis without producing apoptosis and high doses having major cytotoxic effects while causing gross morphological abnormalities. With the pro-inflammatory chemokine system, Cxcl12, and its main receptor Cxcr4, known to promote processes of neurogenesis, we examined here this neuroimmune system in the embryonic hypothalamus to test directly if it mediates the stimulatory effects low-moderate EtOH doses have on neuronal development. METHODS We used the zebrafish (Danio rerio) model, which develops externally and allows one to investigate the developing brain in vivo with precise control of dose and timing of EtOH delivery in the absence of maternal influence. Zebrafish were exposed to low-moderate EtOH doses (0.1, 0.25, 0.5% v/v), specifically during a period of peak hypothalamic development from 22 to 24 hours postfertilization, and in some tests were pretreated from 2 to 22 hpf with the Cxcr4 receptor antagonist, AMD3100. Measurements in the hypothalamus at 26 hpf were taken of cxcl12a and cxcr4b transcription, signaling, and neuronal density using qRT-PCR, RNAscope, and live imaging of transgenic zebrafish. RESULTS Embryonic EtOH exposure, particularly at the 0.5% dose, significantly increased levels of cxcl12a and cxcr4b mRNA in whole embryos, number of cxcl12a and cxcr4b transcripts in developing hypothalamus, and internalization of Cxcr4b receptors in hypothalamic cells. Embryonic EtOH also caused an increase in the number of hypothalamic neurons and coexpression of cxcl12a and cxcr4b transcripts within these neurons. Each of these stimulatory effects of EtOH in the embryo was blocked by pretreatment with the Cxcr4 antagonist AMD3100. CONCLUSIONS These results provide clear evidence that EtOH's stimulatory effects at low-moderate doses on the number of hypothalamic neurons early in development are mediated, in part, by increased transcription and intracellular activation of this chemokine system, likely due to autocrine signaling of Cxcl12a at its Cxcr4b receptor within the neurons.
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Affiliation(s)
- Adam D Collier
- From the, Laboratory of Behavioral Neurobiology, The Rockefeller University, New York, New York
| | - Nailya Khalizova
- From the, Laboratory of Behavioral Neurobiology, The Rockefeller University, New York, New York
| | - Guo-Qing Chang
- From the, Laboratory of Behavioral Neurobiology, The Rockefeller University, New York, New York
| | - Soe Min
- From the, Laboratory of Behavioral Neurobiology, The Rockefeller University, New York, New York
| | - Samantha Campbell
- From the, Laboratory of Behavioral Neurobiology, The Rockefeller University, New York, New York
| | - Gazal Gulati
- From the, Laboratory of Behavioral Neurobiology, The Rockefeller University, New York, New York
| | - Sarah F Leibowitz
- From the, Laboratory of Behavioral Neurobiology, The Rockefeller University, New York, New York
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24
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Cassar S, Dunn C, Ramos MF. Zebrafish as an Animal Model for Ocular Toxicity Testing: A Review of Ocular Anatomy and Functional Assays. Toxicol Pathol 2020; 49:438-454. [PMID: 33063651 DOI: 10.1177/0192623320964748] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Xenobiotics make their way into organisms from diverse sources including diet, medication, and pollution. Our understanding of ocular toxicities from xenobiotics in humans, livestock, and wildlife is growing thanks to laboratory animal models. Anatomy and physiology are conserved among vertebrate eyes, and studies with common mammalian preclinical species (rodent, dog) can predict human ocular toxicity. However, since the eye is susceptible to toxicities that may not involve a histological correlate, and these species rely heavily on smell and hearing to navigate their world, discovering visual deficits can be challenging with traditional animal models. Alternative models capable of identifying functional impacts on vision and requiring minimal amounts of chemical are valuable assets to toxicology. Human and zebrafish eyes are anatomically and functionally similar, and it has been reported that several common human ocular toxicants cause comparable toxicity in zebrafish. Vision develops rapidly in zebrafish; the tiny larvae rely on visual cues as early as 4 days, and behavioral responses to those cues can be monitored in high-throughput fashion. This article describes the comparative anatomy of the zebrafish eye, the notable differences from the mammalian eye, and presents practical applications of this underutilized model for assessment of ocular toxicity.
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Affiliation(s)
- Steven Cassar
- Preclinical Safety, 419726AbbVie, Inc, North Chicago, IL, USA
| | - Christina Dunn
- Preclinical Safety, 419726AbbVie, Inc, North Chicago, IL, USA
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25
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Melanogenic Inhibition and Toxicity Assessment of Flavokawain A and B on B16/F10 Melanoma Cells and Zebrafish ( Danio rerio). Molecules 2020; 25:molecules25153403. [PMID: 32731323 PMCID: PMC7436045 DOI: 10.3390/molecules25153403] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/30/2020] [Accepted: 07/02/2020] [Indexed: 12/14/2022] Open
Abstract
Excessive production of melanin implicates hyperpigmentation disorders. Flavokawain A (FLA) and flavokawain B (FLB) have been reported with anti-melanogenic activity, but their melanogenic inhibition and toxicity effects on the vertebrate model of zebrafish are still unknown. In the present study, cytotoxic as well as melanogenic effects of FLA and FLB on cellular melanin content and tyrosinase activity were evaluated in α-MSH-induced B16/F10 cells. Master regulator of microphthalmia-associated transcription factor (Mitf) and the other downstream melanogenic-related genes were verified via quantitative real time PCR (qPCR). Toxicity assessment and melanogenesis inhibition on zebrafish model was further observed. FLA and FLB significantly reduced the specific cellular melanin content by 4.3-fold and 9.6-fold decrement, respectively in α-MSH-induced B16/F10 cells. Concomitantly, FLA significantly reduced the specific cellular tyrosinase activity by 7-fold whilst FLB by 9-fold. The decrement of melanin production and tyrosinase activity were correlated with the mRNA suppression of Mitf which in turn down-regulate Tyr, Trp-1 and Trp-2. FLA and FLB exhibited non-toxic effects on the zebrafish model at 25 and 6.25 µM, respectively. Further experiments on the zebrafish model demonstrated successful phenotype-based depigmenting activity of FLA and FLB under induced melanogenesis. To sum up, our findings provide an important first key step for both of the chalcone derivatives to be further studied and developed as potent depigmenting agents.
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26
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Zhang D, Liu X, Dong X, Zhu R, Jiang J, Ye Y, Jiang Y. Cannabinoid 1 Receptor Antagonists Play a Neuroprotective Role in Chronic Alcoholic Hippocampal Injury Related to Pyroptosis Pathway. Alcohol Clin Exp Res 2020; 44:1585-1597. [PMID: 32524615 DOI: 10.1111/acer.14391] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 05/02/2020] [Accepted: 05/28/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND Alcohol use disorders affect millions of people worldwide, and there is growing evidence that excessive alcohol intake causes severe damage to the brain of both humans and animals. Numerous studies on chronic alcohol exposure in animal models have identified that many functional impairments are associated with the hippocampus, which is a structure exhibiting substantial vulnerability to alcohol exposure. However, the precise mechanisms that lead to structural and functional impairments of the hippocampus are poorly understood. Herein, we report a novel cell death type, namely pyroptosis, which accounts for alcohol neurotoxicity in mice. METHODS For this study, we used an in vivo model to induce alcohol-related neurotoxicity in the hippocampus. Adult male C57BL/6 mice were treated with 95% alcohol vapor either alone or in combination with selective cannabinoid receptor antagonists or agonists, and VX765 (Belnacasan), which is a selective caspase-1 inhibitor. RESULTS Alcohol-induced in vivo pyroptosis occurs because of an increase in the levels of pyroptotic proteins such as nucleotide-binding domain (NOD)-like receptor protein 3 (NLRP3), caspase-1, gasdermin D (GSDMD), and amplified inflammatory response. Our results indicated that VX765 suppressed the expression of caspase-1 and inhibited the maturation of the proinflammatory cytokines interleukin-1β (IL-1β) and IL-18. Additionally, chronic alcohol intake created an imbalance in the endocannabinoid system and regulated 2 cannabinoid receptors (CB1R and CB2R) in the hippocampus. Specific antagonists of CB1R (AM251 and AM281) significantly ameliorated alcohol-induced pyroptosis signaling and inactivated the inflammatory response. CONCLUSIONS Alcohol induces hippocampal pyroptosis, which leads to neurotoxicity, thereby indicating that pyroptosis may be an essential pathway involved in chronic alcohol-induced hippocampal neurotoxicity. Furthermore, cannabinoid receptors are regulated during this process, which suggests promising therapeutic strategies against alcohol-induced neurotoxicity through pharmacologic inhibition of CB1R.
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Affiliation(s)
- Dingang Zhang
- From the, Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Xiaochen Liu
- From the, Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Xiaoru Dong
- From the, Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Rongzhe Zhu
- From the, Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Jieqing Jiang
- From the, Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Yonghong Ye
- From the, Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Yan Jiang
- From the, Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
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27
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Müller TE, Fontana BD, Bertoncello KT, Franscescon F, Mezzomo NJ, Canzian J, Stefanello FV, Parker MO, Gerlai R, Rosemberg DB. Understanding the neurobiological effects of drug abuse: Lessons from zebrafish models. Prog Neuropsychopharmacol Biol Psychiatry 2020; 100:109873. [PMID: 31981718 DOI: 10.1016/j.pnpbp.2020.109873] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 01/20/2020] [Accepted: 01/21/2020] [Indexed: 01/01/2023]
Abstract
Drug abuse and brain disorders related to drug comsumption are public health problems with harmful individual and social consequences. The identification of therapeutic targets and precise pharmacological treatments to these neuropsychiatric conditions associated with drug abuse are urgently needed. Understanding the link between neurobiological mechanisms and behavior is a key aspect of elucidating drug abuse-related targets. Due to various molecular, biochemical, pharmacological, and physiological features, the zebrafish (Danio rerio) has been considered a suitable vertebrate for modeling complex processes involved in drug abuse responses. In this review, we discuss how the zebrafish has been successfully used for modeling neurobehavioral phenotypes related to drug abuse and review the effects of opioids, cannabinoids, alcohol, nicotine, and psychedelic drugs on the central nervous system (CNS). Moreover, we summarize recent advances in zebrafish-based studies and outline potential advantages and limitations of the existing zebrafish models to explore the neurochemical bases of drug abuse and addiction. Finally, we discuss how the use of zebrafish models may present fruitful approaches to provide valuable clinically translatable data.
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Affiliation(s)
- Talise E Müller
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Center of Natural and Exact Sciences, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil.
| | - Barbara D Fontana
- Brain and Behaviour Laboratory, School of Pharmacy and Biomedical Sciences, University of Portsmouth, Old St Michael's Building, Portsmouth PO1 2DT, UK
| | - Kanandra T Bertoncello
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Center of Natural and Exact Sciences, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Francini Franscescon
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Center of Natural and Exact Sciences, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Nathana J Mezzomo
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Center of Natural and Exact Sciences, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Pharmacology, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Julia Canzian
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Center of Natural and Exact Sciences, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Flavia V Stefanello
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Center of Natural and Exact Sciences, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Matthew O Parker
- Brain and Behaviour Laboratory, School of Pharmacy and Biomedical Sciences, University of Portsmouth, Old St Michael's Building, Portsmouth PO1 2DT, UK
| | - Robert Gerlai
- Department of Psychology, University of Toronto, Mississauga, Canada; Department of Cell and Systems Biology, University of Toronto, Canada
| | - Denis B Rosemberg
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Center of Natural and Exact Sciences, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; The International Zebrafish Neuroscience Research Consortium (ZNRC), 309 Palmer Court, Slidell, LA 70458, USA.
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28
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Paul I, Tsang B, Gerlai R. Short Exposure to Moderate Concentration of Alcohol During Embryonic Development Does Not Alter Gross Morphology in Zebrafish. Zebrafish 2020; 17:253-260. [PMID: 32493176 DOI: 10.1089/zeb.2020.1872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Several studies have demonstrated translational potential of the zebrafish in modeling fetal alcohol spectrum disorders (FASDs), including the less severe forms of this disease. Short exposure to even low doses of alcohol during embryonic development has been shown to disrupt behavior, alter neurochemistry, and expression of neuronal markers and glial cell phenotypes in zebrafish. However, no study to date has systematically analyzed the potential morphological effects of the short- and low-dose embryonic alcohol exposure regimen used before with zebrafish to model milder forms of human FASD. In this study, we use this previously used embryonic alcohol exposure regimen. We immerse intact zebrafish eggs of AB strain and of a genetically variable wild-type population for 2 h into 1% or 0% (vol/vol) ethanol bath at one of five developmental stages (8, 16, 24, 32, or 40 h postfertilization). At 8 days postfertilization, we quantify body length and width and eye diameter of the larvae. We report nonsignificant effects of embryonic alcohol exposure used at all developmental stages in both populations of zebrafish. Our results confirm that visual perception or motor function is unlikely to have contributed to previously reported behavioral abnormalities resulting from embryonic alcohol exposure in zebrafish.
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Affiliation(s)
- Ishti Paul
- Department of Psychology and University of Toronto Mississauga, Mississauga, Canada.,Department of Biology, University of Toronto Mississauga, Mississauga, Canada
| | - Benjamin Tsang
- Department of Psychology and University of Toronto Mississauga, Mississauga, Canada.,Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom.,Research Operations, Hospital for Sick Children, Peter Gilgan Center for Research & Learning, Toronto, Canada
| | - Robert Gerlai
- Department of Psychology and University of Toronto Mississauga, Mississauga, Canada.,Department of Cell & Systems Biology, University of Toronto, Toronto, Canada
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29
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Köktürk M, Alak G, Atamanalp M. The effects of n-butanol on oxidative stress and apoptosis in zebra fish (Danio rerio) larvae. Comp Biochem Physiol C Toxicol Pharmacol 2020; 227:108636. [PMID: 31669665 DOI: 10.1016/j.cbpc.2019.108636] [Citation(s) in RCA: 4] [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: 08/23/2019] [Revised: 09/23/2019] [Accepted: 09/26/2019] [Indexed: 02/06/2023]
Abstract
In recent years, n-butanol has growing use in many areas, including the food industry. In this study, acute toxic effects of n-butanol to zebrafish (Danio rerio) larvae by applying different concentrations (10, 50, 250, 500, 750, 1000 and 1250 mg/L) to embryos were evaluated. For this purpose the data of oxidative stress, antioxidant - acetyl cholinesterase enzyme activities, malondialdehyde level and apoptosis were taken into consideration. At the end of the 96 h, antioxidant (Superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx)) and acetylcholinesterase (AChE) enzyme activities were decreased, however lipid peroxidation level, apoptotic cells, and reactive oxygen species increased (p < .05). As a result, it has been observed that high concentrations of n-butanol with its amphiphilic structure causes quite intense toxic effects in zebrafish embryos.
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Affiliation(s)
- Mine Köktürk
- Department of Organic Farming, School of Applied Science, Igdır University, TR-76000 Igdır, Turkey
| | - Gonca Alak
- Department of Aquaculture, Faculty of Fisheries, Ataturk University, TR-25030 Erzurum, Turkey
| | - Muhammed Atamanalp
- Department of Aquaculture, Faculty of Fisheries, Ataturk University, TR-25030 Erzurum, Turkey.
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30
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Wang H, Meng Z, Liu F, Zhou L, Su M, Meng Y, Zhang S, Liao X, Cao Z, Lu H. Characterization of boscalid-induced oxidative stress and neurodevelopmental toxicity in zebrafish embryos. CHEMOSPHERE 2020; 238:124753. [PMID: 31545217 DOI: 10.1016/j.chemosphere.2019.124753] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/31/2019] [Accepted: 09/03/2019] [Indexed: 06/10/2023]
Abstract
Boscalid is a widely used fungicide in agriculture and has been frequently detected in both environments and agricultural products. However, evidence on the neurotoxic effect of boscalid is scarce. In this study, zebrafish served as an animal model to investigate the toxic effects and mechanisms of boscalid on aquatic vertebrates or higher animals. And we unravelled that boscalid induced developmental defects associated with oxidative stress. Developmental defects, including head deformity, hypopigmentation, decreased number of newborn neurons, structural defects around the ventricle, enlarged intercellular space in the brain, and nuclear concentration, were observed in zebrafish embryos after boscalid exposure at 48 hpf. Interestingly, we found that boscalid might directly induce oxidative stress and alter the activity of ATPase, which in turn disrupted the expression of genes involved in neurodevelopment and transmitter-transmitting signalings and melanocyte differentiation and melanin synthesis signalings. Ultimately, the differentiation of nerve cells and melanocytes were both impacted and the synthesis of melanin was inhibited, leading to morphological abnormalities. Additionally, exposure to boscalid led to less and imbalance motion and altered tendency of locomotor in larval fish. Collectively, our results provide new evidences for a comprehensive assessment of its toxicity and a warning for its residues in environment and agricultural products.
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Affiliation(s)
- Honglei Wang
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, Jiangxi, China
| | - Zhen Meng
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, Jiangxi, China
| | - Fasheng Liu
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, Jiangxi, China
| | - Liqun Zhou
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, Jiangxi, China
| | - Meile Su
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, Jiangxi, China
| | - Yunlong Meng
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, Jiangxi, China
| | - Shouhua Zhang
- Department of General Surgery, Jiangxi Provincial Children's Hospital, Nanchang, 330006, PR China
| | - Xinjun Liao
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, Jiangxi, China
| | - Zigang Cao
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, Jiangxi, China
| | - Huiqiang Lu
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, Jiangxi, China.
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31
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Wang H, Zhou L, Meng Z, Su M, Zhang S, Huang P, Jiang F, Liao X, Cao Z, Lu H. Clethodim exposure induced development toxicity and behaviour alteration in early stages of zebrafish life. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 255:113218. [PMID: 31541821 DOI: 10.1016/j.envpol.2019.113218] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 08/27/2019] [Accepted: 09/07/2019] [Indexed: 06/10/2023]
Abstract
Clethodim is one of the most widely used herbicides in agriculture, however, its potential toxic effects on organisms and the underlying toxicity mechanism are still poorly understood. In this study, zebrafish embryos at 6 h post-fertilization (hpf) were exposed to 10 mg/L, 20 mg/L, and 30 mg/L clethodim for up to 24 hpf, and zebrafish larvae at 6 days post-fertilization (dpf) were exposed to the same density gradient for 24 h. Our results showed that clethodim could cause head and cardiovascular malformations in embryos: blurred brain ventricles, unapparent brain regions, condensation of nucleus and cytoplasm in brain cells, increased intercellular space, developmental malformations of eyes and ears, reduced neonatal neurons, disorder migration of neural ridge cells; morphological aberrations of the vascular ICM, slowing of heart beat and blood flow, reduction of circulating red blood cells, and delayed development of head and tail blood vessels. These defects could be a result of clethodim-induced oxidative stress and decreased acetylcholinesterase (AChE) activity, which in turn affected the expression of neurodevelopmental genes, decreased ATPase activity, and ultimately led to developmental malformations. The swimming behaviour of zebrafish larvae was observed to decrease with increasing concentration of clethodim exposure, but the angular velocity and mobility increased. These could be due to reduced AChE activity and disturbed gene expression of GABA, dopamine and glutamatergic neurotransmitter systems, which thus altered the locomotor behaviour. In summary, we found that clethodim induces developmental toxicity and neurotoxicity in zebrafish embryos and larvae.
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Affiliation(s)
- Honglei Wang
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, 343009, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Liqun Zhou
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, 343009, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Zhen Meng
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, 343009, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Meile Su
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, 343009, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Shouhua Zhang
- Department of General Surgery, Jiangxi Provincial Children's Hospital, Nanchang, 330006, China
| | - Pinzhen Huang
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, 343009, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Fen Jiang
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, 343009, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Xinjun Liao
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, 343009, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Zigang Cao
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, 343009, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Huiqiang Lu
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, 343009, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, 343009, Jiangxi, China.
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Zindler F, Beedgen F, Braunbeck T. Time-course of coiling activity in zebrafish (Danio rerio) embryos exposed to ethanol as an endpoint for developmental neurotoxicity (DNT) - Hidden potential and underestimated challenges. CHEMOSPHERE 2019; 235:12-20. [PMID: 31254777 DOI: 10.1016/j.chemosphere.2019.06.154] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 06/19/2019] [Accepted: 06/20/2019] [Indexed: 06/09/2023]
Abstract
Detection of developmental neurotoxicity (DNT) has been recognized as a major challenge by regulatory bodies and science. In search of sensitive and specific test methods, spontaneous tail coiling of embryonic zebrafish has been recommended as a promising tool for identification of DNT-inducing chemicals. The present study was designed to develop a protocol for a prolonged test to study neurotoxicity during the entire development of coiling movement in zebrafish embryos. Ambient illumination was found to modulate coiling activity from the very onset of tail movements representing the earliest behavioral response to light possible in zebrafish. In the dark, embryos displayed increased coiling activity in a way known from photokinesis, a stereotypical element of the visual motor response. Elevated coiling activity during dark phases allows for the development of test strategies that integrate later coiling movements under the control of a further developed nervous system. Furthermore, zebrafish embryos were exposed to ethanol, and coiling activity was analyzed according to the new test protocol. Exposure of embryos to non-teratogenic concentrations of ethanol (0.4-1%) resulted in a delay of the onset of coiling activity and heartbeat. Moreover, ethanol produced a dose-dependent increase in coiling frequency at 26 h post-fertilization, indicating the involvement of neurotoxic mechanisms. Analysis of coiling activity during prolonged exposure allowed for (1) attributing effects on coiling activity to different mechanisms and (2) preventing false interpretation of results. Further research is needed to verify the potential of this test protocol to distinguish between different mechanisms of neurotoxicity.
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Affiliation(s)
- Florian Zindler
- Aquatic Ecology and Toxicology Section, Centre for Organismal Studies, University of Heidelberg, Im Neuenheimer Feld 504, Heidelberg, D-69120, Germany.
| | - Franziska Beedgen
- Aquatic Ecology and Toxicology Section, Centre for Organismal Studies, University of Heidelberg, Im Neuenheimer Feld 504, Heidelberg, D-69120, Germany
| | - Thomas Braunbeck
- Aquatic Ecology and Toxicology Section, Centre for Organismal Studies, University of Heidelberg, Im Neuenheimer Feld 504, Heidelberg, D-69120, Germany
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Protection role of resveratrol against alcohol-induced heart defect in zebrafish embryos. Chin Med J (Engl) 2019; 132:990-993. [PMID: 30958444 PMCID: PMC6595755 DOI: 10.1097/cm9.0000000000000194] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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The citrus flavonoids hesperidin and naringin alleviate alcohol-induced behavioural alterations and developmental defects in zebrafish larvae. Neurotoxicol Teratol 2019; 73:22-30. [DOI: 10.1016/j.ntt.2019.03.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 03/13/2019] [Accepted: 03/14/2019] [Indexed: 02/05/2023]
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Wang H, Zhou L, Liao X, Meng Z, Xiao J, Li F, Zhang S, Cao Z, Lu H. Toxic effects of oxine-copper on development and behavior in the embryo-larval stages of zebrafish. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 210:242-250. [PMID: 30878792 DOI: 10.1016/j.aquatox.2019.02.020] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 02/19/2019] [Accepted: 02/26/2019] [Indexed: 06/09/2023]
Abstract
Oxine-copper (OxCu) is generally used as an agricultural pesticide and induces harmful effects on ecosystems. In this study, zebrafish was used to assess the aquatic toxicity of OxCu. To detect the effects on development, embryos of 6 h post-fertilization (hpf) were exposed to 10 μg/L, 20 μg/L, 40 μg/L OxCu for 18 h; meanwhile, to evaluate the effects on the behavior, larval fish at 6 days post-fertilization (dpf) were exposed to the same concentrations for 24 h. Here, we show that there are embryonic developmental defects, including abnormalities of head and trunk, brain ventricle atrophy, reduced newborn neurons, disordered neurons, increased intercellular space, concentrated cytoplasm, decreased heart beat and blood flow velocity, and developmental delay of the vascular system; in addition, some embryos exposed to the high concentration of OxCu degraded from the tail. We also found that the spontaneous tail coiling frequency and AChE enzyme activity were reduced, while oxidative stress (free radical damage) and cell apoptosis were significantly increased. Moreover, the expression of genes involved in neurodevelopment, vascular development and apoptosis were dysregulated in the OxCu exposed embryos in a concentration-dependent manner. Finally, we found that after exposure to OxCu, larval locomotor activity was decreased and accompanied by Parkinson-like (increased absolute turn angle and sinuosity) and anxiety-like (preferred to the central area) behavior. These results indicate that OxCu induces developmental toxicity and behavioral alterations by affecting AChE enzyme activity and oxidative stress. Our data present new proofs of OxCu toxicity and a warning for its application.
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Affiliation(s)
- Honglei Wang
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, Jiangxi, China
| | - Liqun Zhou
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, Jiangxi, China
| | - Xinjun Liao
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, Jiangxi, China
| | - Zhen Meng
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, Jiangxi, China
| | - Juhua Xiao
- Department of Ultrasound, Jiangxi Provincial Maternal and Child Health Hospital, Nanchang, 330006, China
| | - Fuyan Li
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, Jiangxi, China
| | - Shouhua Zhang
- Department of General Surgery, Jiangxi Provincial Children's Hospital, Nanchang 330006, China
| | - Zigang Cao
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, Jiangxi, China
| | - Huiqiang Lu
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Jiangxi Key Laboratory of Developmental Biology of Organs, Ji'an, Jiangxi, China; Center for Developmental Biology of Jinggangshan University, College of Life Sciences, Jinggangshan University, Ji'an, Jiangxi, China.
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Buckley DM, Sidik A, Kar RD, Eberhart JK. Differentially sensitive neuronal subpopulations in the central nervous system and the formation of hindbrain heterotopias in ethanol-exposed zebrafish. Birth Defects Res 2019; 111:700-713. [PMID: 30793540 DOI: 10.1002/bdr2.1477] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 01/22/2019] [Accepted: 01/24/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND A cardinal feature of prenatal ethanol exposure is CNS damage, resulting in a continuum of neurological and behavioral impairments that are described by the term fetal alcohol spectrum disorders (FASD). FASDs are variable and depend on several factors, including the amount, timing, and duration of prenatal ethanol exposure. To enhance interventions for CNS dysfunction, it is necessary to identify ethanol-sensitive neuronal populations and expand the understanding of factors that modify ethanol teratogenesis. METHODS To investigate the susceptibility of different neuronal subtypes, we exposed transgenic zebrafish (Danio rerio) to several ethanol concentrations (0.25, 0.5, 1.0, 1.5, or 2.0%), at different hours post fertilization (hpf; 0, 6, or 24 hpf), for various durations (0-24, 0-48, 4-24, 6-24, 6-48,or 24-48 hpf). Following exposure, embryo survival rates were determined, and CNS neurogenesis, differentiation, and patterning were assessed. RESULTS Embryo survival rates decrease as ethanol concentrations increase and drastically decline when exposed from 0-24 hpf compared to 4-24 hpf. Abnormal tangential migration of facial motor neurons is observed in isl1:gfp embryos exposed to ethanol concentrations as low as 0.25%, and the formation of IVth ventricle heterotopias are revealed by embryos exposed to ≥1.0% ethanol. Whereas, expression of olig2:dsred and ptf1a:gfp in the cerebellum and spinal cord are largely unaffected. While levels of etv4 mRNA are overtly resistant to ethanol, we observe significant reductions in ptch2 mRNA levels. CONCLUSIONS These data show differentially sensitive CNS neuron subpopulations with susceptibility to low levels of ethanol. In addition, these data reveal the formation of ethanol-induced hindbrain heterotopias.
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Affiliation(s)
- Desire M Buckley
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas
| | - Alfire Sidik
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas
| | - Ranjeet D Kar
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas
| | - Johann K Eberhart
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas
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Fan X, Wu L, Hou T, He J, Wang C, Liu Y, Wang Z. Maternal Bisphenol A exposure impaired endochondral ossification in craniofacial cartilage of rare minnow (Gobiocypris rarus) offspring. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 163:514-520. [PMID: 30075455 DOI: 10.1016/j.ecoenv.2018.07.100] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 06/27/2018] [Accepted: 07/24/2018] [Indexed: 06/08/2023]
Abstract
Bisphenol A (BPA), an endocrine disrupting compound, is present in the aquatic environment. BPA can mimic estrogen and cause adverse effects on development and reproduction in different organisms. As epigenetic modifications due to BPA exposure have been reported, the interest on the effects of this chemical has increased. To assess the potential effects of maternal BPA exposure on offspring bone development, adult Gobiocypris rarus (G. rarus) females were exposed to 15 μg L-1 and 225 μg L-1 BPA for 21 days. Eggs were collected after artificial spawning and fertilized with the fresh milt of non-exposed male fish. The offspring were raised in clean water and randomly selected for examination at different development stages. Our results showed that specific effects including poor quality of the embryos, increased malformation (bent spine and tail), and delayed craniofacial cartilage ossification of the larvae. Additionally, the transcripts of ossification related genes were significantly downregulated in offspring, and the lysyloxidase activity decreased. The present study demonstrated the maternal-mediated skeleton toxicity of BPA and its adverse effects on G. rarus.
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Affiliation(s)
- Xiaoteng Fan
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Lang Wu
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Tingting Hou
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jiafa He
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Cheng Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yan Liu
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Zaizhao Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China.
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Lutte AH, Nazario LR, Majolo JH, Pereira TCB, Altenhofen S, Dadda ADS, Bogo MR, Da Silva RS. Persistent increase in ecto‑5'‑nucleotidase activity from encephala of adult zebrafish exposed to ethanol during early development. Neurotoxicol Teratol 2018; 70:60-66. [PMID: 30366104 DOI: 10.1016/j.ntt.2018.10.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 10/22/2018] [Accepted: 10/23/2018] [Indexed: 12/13/2022]
Abstract
Prenatal alcohol exposure causes alterations to the brain and can lead to numerous cognitive and behavioral outcomes. Long-lasting effects of early ethanol exposure have been registered in glutamatergic and dopaminergic systems. The purinergic system has been registered as an additional target of ethanol exposure. The objective of this research was to evaluate if the ecto‑5'‑nucleotidase and adenosine deaminase activities and gene expression of adult zebrafish exposed to 1% ethanol during early development could be part of the long-lasting targets of ethanol. Zebrafish embryos were exposed to 1% ethanol in two distinct developmental phases: gastrula/segmentation (5-24 h post-fertilization) or pharyngula (24-48 h post-fertilization). At the end of three months, after checking for morphological outcomes, the evaluation of enzymatic activity and gene expression was performed. Exposure to ethanol did not promote gross morphological defects; however, a significant decrease in the body length was observed (17% in the gastrula and 22% in the pharyngula stage, p < 0.0001). Ethanol exposure during the gastrula/segmentation stage promoted an increase in ecto‑5'‑nucleotidase activity (39.5%) when compared to the control/saline group (p < 0.0001). The ecto‑5'‑nucleotidase gene expression and the deamination of adenosine exerted by ecto and cytosolic adenosine deaminase were not affected by exposure to ethanol in both developmental stages. HPLC experiments did not identify differences in adenosine concentration on the whole encephala of adult animals exposed to ethanol during the gastrula stage or on control animals (p > 0.05). Although the mechanism underlying these findings requires further investigation, these results indicate that ethanol exposure during restricted periods of brain development can have long-term consequences on ecto‑5'‑nucleotidase activity, which could have an impact on subtle sequels of ethanol early exposure.
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Affiliation(s)
- Aline Haab Lutte
- Laboratório de Neuroquímica e Psicofarmacologia, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Luiza Reali Nazario
- Laboratório de Neuroquímica e Psicofarmacologia, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Júlia Huppes Majolo
- Laboratório de Neuroquímica e Psicofarmacologia, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Talita Carneiro Brandão Pereira
- Laboratório de Biologia Genômica e Molecular, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Stefani Altenhofen
- Laboratório de Neuroquímica e Psicofarmacologia, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Adilio da Silva Dadda
- Instituto Nacional de Ciência e Tecnologia em Tuberculose, Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Maurício Reis Bogo
- Laboratório de Biologia Genômica e Molecular, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Rosane Souza Da Silva
- Laboratório de Neuroquímica e Psicofarmacologia, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.
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Wang F, Fang M, Hinton DE, Chernick M, Jia S, Zhang Y, Xie L, Dong W, Dong W. Increased coiling frequency linked to apoptosis in the brain and altered thyroid signaling in zebrafish embryos (Danio rerio) exposed to the PBDE metabolite 6-OH-BDE-47. CHEMOSPHERE 2018; 198:342-350. [PMID: 29421749 PMCID: PMC7006228 DOI: 10.1016/j.chemosphere.2018.01.081] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 01/13/2018] [Accepted: 01/16/2018] [Indexed: 05/04/2023]
Abstract
Polybrominated diphenyl ethers (PBDEs) are a group of brominated flame retardants that are ubiquitously detected in the environment and associated with adverse health outcomes. 6-OH-BDE-47 is a metabolite of the flame retardant, 2,2',4,4'-Tetrabromodiphenyl ether (BDE-47), and there is increasing concern regarding its developmental neurotoxicity and endocrine disrupting properties. In this study, we report that early life exposure in zebrafish (Danio rerio) embryos to 6-OH-BDE-47 (50 and 100 nM) resulted in higher coiling frequency and significantly increased apoptotic cells in the brain. These effects were partially rescued by overexpression of thyroid hormone receptor β (THRβ) mRNA. Moreover, exposure to 100 nM 6-OH-BDE-47 significantly reduced the number of hypothalamic 5-hydroxytryptamine (5-HT, serotonin)-immunoreactive (5-HT-ir) neurons and the mRNA expression of tryptophan hydroxylase 2 (TPH2). These results indicate that 6-OH-BDE-47 affected thyroid hormone regulation through THRβ and negatively impacted the nervous system, in turn, affecting coiling behavior. Correlations of these endpoints suggest that coiling frequency could be used as an indicator of neurotoxicity in embryos.
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Affiliation(s)
- Feng Wang
- Inner Mongolia Key Laboratory of Toxicant Monitoring and Toxicology, Collage of Animal Science and Technology, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, 028000, China
| | - Mingliang Fang
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - David E Hinton
- Nicholas School of the Environment, Duke University, Durham, NC, 27708, United States
| | - Melissa Chernick
- Nicholas School of the Environment, Duke University, Durham, NC, 27708, United States
| | - Shenglan Jia
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Yingdan Zhang
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Lingtian Xie
- The Environmental Research Institute, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, Guangdong, 510006, China
| | - Wenjing Dong
- Inner Mongolia Key Laboratory of Toxicant Monitoring and Toxicology, Collage of Animal Science and Technology, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, 028000, China
| | - Wu Dong
- Inner Mongolia Key Laboratory of Toxicant Monitoring and Toxicology, Collage of Animal Science and Technology, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, 028000, China; Nicholas School of the Environment, Duke University, Durham, NC, 27708, United States.
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