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Schmandt B, Diduff M, Smart G, Williams LM. Environmentally Relevant Concentrations of Triphenyl Phosphate (TPhP) Impact Development in Zebrafish. TOXICS 2024; 12:368. [PMID: 38787147 PMCID: PMC11125690 DOI: 10.3390/toxics12050368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 05/10/2024] [Accepted: 05/13/2024] [Indexed: 05/25/2024]
Abstract
A common flame-retardant and plasticizer, triphenyl phosphate (TPhP) is an aryl phosphate ester found in many aquatic environments at nM concentrations. Yet, most studies interrogating its toxicity have used µM concentrations. In this study, we used the model organism zebrafish (Danio rerio) to uncover the developmental impact of nM exposures to TPhP at the phenotypic and molecular levels. At concentrations of 1.5-15 nM (0.5 µg/L-5 µg/L), chronically dosed 5dpf larvae were shorter in length and had pericardial edema phenotypes that had been previously reported for exposures in the µM range. Cardiotoxicity was observed but did not present as cardiac looping defects as previously reported for µM concentrations. The RXR pathway does not seem to be involved at nM concentrations, but the tbx5a transcription factor cascade including natriuretic peptides (nppa and nppb) and bone morphogenetic protein 4 (bmp4) were dysregulated and could be contributing to the cardiac phenotypes. We also demonstrate that TPhP is a weak pro-oxidant, as it increases the oxidative stress response within hours of exposure. Overall, our data indicate that TPhP can affect animal development at environmentally relevant concentrations and its mode of action involves multiple pathways.
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Kouakou F, Denizot AL, L'Hostis A, Colet J, Jacques S, Sallem A, Ziyyat A, Vaiman D, Wolf JP. Plastic used in in vitro fertilization procedures induces massive placental gene expression alterations. EBioMedicine 2023; 91:104572. [PMID: 37094466 PMCID: PMC10149224 DOI: 10.1016/j.ebiom.2023.104572] [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: 11/13/2022] [Revised: 03/29/2023] [Accepted: 03/31/2023] [Indexed: 04/26/2023] Open
Abstract
BACKGROUND The exposure to plastic derivatives during human life is deleterious. Infants conceived using ART (IVF or ICSI) have twice as many risks of major birth defects compared to naturally conceived infants. Could plastic ware used during ART trigger defects in the fetal development? METHODS Three groups of blastocysts were transferred to pseudopregnant mice. One was obtained after IVF and embryo development in plastic ware, the second in glass ware. The third, was obtained in vivo by natural mating. On day 16.5 of pregnancy, females were sacrificed and fetal organs collected for gene expression analysis. Fetal sex was determined by RT-PCR. RNA was extracted from a pool of five placental or brain samples coming from at least two litters from the same group and analyzed by hybridisation onto the mouse Affymetrix 430.2.0 GeneChips, confirmed by RT-qPCR for 22 genes. FINDINGS This study highlights a major impact of plastic ware on placental gene expression (1121 significantly deregulated genes), while glassware was much closer to in vivo offspring (only 200 significantly deregulated genes). Gene Ontology indicated that the modified placental genes were mostly involved in stress, inflammation and detoxification. A sex specific analysis revealed in addition a more drastic effect on female than male placentas. In the brains, whatever the comparison, less than 50 genes were found deregulated. INTERPRETATION Embryos incubated in plastic ware resulted in pregnancy with massive alterations of placental gene expression profile in concerted biological functions. There were no obvious effects on the brains. Besides other effects, this suggests that plastic ware in ART could be a cause of the increased level of pregnancy disorders observed recurrently in ART pregnancies. FUNDING This study was funded by two grants from the Agence de la Biomedecine in 2017 and 2019.
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Affiliation(s)
- Franck Kouakou
- Team "From Gametes To Birth", Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, 22 rue Mechain, 75014, Paris, France
| | - Anne-Lyse Denizot
- Team "From Gametes To Birth", Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, 22 rue Mechain, 75014, Paris, France
| | - Audrey L'Hostis
- Team "From Gametes To Birth", Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, 22 rue Mechain, 75014, Paris, France
| | - Julie Colet
- Team "From Gametes To Birth", Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, 22 rue Mechain, 75014, Paris, France
| | - Sébastien Jacques
- Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, 22 rue Mechain, 75014, Paris, France
| | - Amira Sallem
- Team "From Gametes To Birth", Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, 22 rue Mechain, 75014, Paris, France; Laboratoire d'Histologie-Embryologie et Cytogénétique (LR 18 ES 40), Faculté de Médecine de Monastir, Université de Monastir, Tunisia
| | - Ahmed Ziyyat
- Team "From Gametes To Birth", Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, 22 rue Mechain, 75014, Paris, France
| | - Daniel Vaiman
- Team "From Gametes To Birth", Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, 22 rue Mechain, 75014, Paris, France
| | - Jean-Philippe Wolf
- Team "From Gametes To Birth", Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, 22 rue Mechain, 75014, Paris, France; Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, 22 rue Mechain, 75014, Paris, France; Laboratoire de Biologie de la Reproduction, Hôpital Cochin, Assistance Publique Hôpitaux de Paris, France.
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Baralić K, Pavić A, Javorac D, Živančević K, Božić D, Radaković N, Antonijević Miljaković E, Buha Djordjevic A, Ćurčić M, Bulat Z, Antonijević B, Đukić-Ćosić D. Comprehensive investigation of hepatotoxicity of the mixture containing phthalates and bisphenol A. JOURNAL OF HAZARDOUS MATERIALS 2023; 445:130404. [PMID: 36455319 DOI: 10.1016/j.jhazmat.2022.130404] [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: 07/22/2022] [Revised: 10/23/2022] [Accepted: 11/13/2022] [Indexed: 06/17/2023]
Abstract
Connections between the mixture containing bis(2- ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP) and bisphenol A (BPA) and liver injury were explored through in silico investigation and 2 in vivo models. Comparative Toxicogenomics Database (CTD), ShinyGO, ToppCluster and Cytoscape were used for bioinformatic analysis. In vivo subacute study was performed on rats - five groups (n = 6): (1) Control: corn oil, (2) DEHP: 50 mg/kg b.w./day, (3) DBP: 50 mg/kg b.w./day, (4) BPA: 25 mg/kg b.w./day, (5) MIX: DEHP + DBP + BPA. Zebrafish embryos were exposed to the investigated substances in different doses, singularly and combined (binary and ternary mixtures). Liver injury was linked to 75 DEHP, DBP, and BPA genes, mostly connected to inflammation/oxidative stress. In rats, significant alterations in redox status/bioelements and pathohistology were most notable or exclusively present in MIX (probable additive effects). BPA decreased liver area (LA) index in dose-dependent manner. DEHP (< 2 µg/mL) and DBP (≤ 5 µg/mL) reduced LA values, while their higher doses increased LA index. The effect of DBP in binary mixtures led to a lethal outcome at the two highest concentrations, while the hepatotoxicity of DEHP/DBP/BPA mixture was dictated by BPA (confirmed by the benchmark dose analysis).
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Affiliation(s)
- Katarina Baralić
- Department of Toxicology "Akademik Danilo Soldatović", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia.
| | - Aleksandar Pavić
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11000 Belgrade, Serbia
| | - Dragana Javorac
- Department of Toxicology "Akademik Danilo Soldatović", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia
| | - Katarina Živančević
- Department of Toxicology "Akademik Danilo Soldatović", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia; University of Belgrade - Faculty of Biology, Institute of Physiology and Biochemistry "Ivan Djaja", Studentski trg, 3, Belgrade, Serbia
| | - Dragica Božić
- Department of Toxicology "Akademik Danilo Soldatović", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia
| | - Nataša Radaković
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11000 Belgrade, Serbia
| | - Evica Antonijević Miljaković
- Department of Toxicology "Akademik Danilo Soldatović", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia
| | - Aleksandra Buha Djordjevic
- Department of Toxicology "Akademik Danilo Soldatović", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia
| | - Marijana Ćurčić
- Department of Toxicology "Akademik Danilo Soldatović", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia
| | - Zorica Bulat
- Department of Toxicology "Akademik Danilo Soldatović", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia
| | - Biljana Antonijević
- Department of Toxicology "Akademik Danilo Soldatović", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia
| | - Danijela Đukić-Ćosić
- Department of Toxicology "Akademik Danilo Soldatović", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia
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Le Mentec H, Monniez E, Legrand A, Monvoisin C, Lagadic-Gossmann D, Podechard N. A New In Vivo Zebrafish Bioassay Evaluating Liver Steatosis Identifies DDE as a Steatogenic Endocrine Disruptor, Partly through SCD1 Regulation. Int J Mol Sci 2023; 24:ijms24043942. [PMID: 36835354 PMCID: PMC9959061 DOI: 10.3390/ijms24043942] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 02/03/2023] [Accepted: 02/06/2023] [Indexed: 02/18/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD), which starts with liver steatosis, is a growing worldwide epidemic responsible for chronic liver diseases. Among its risk factors, exposure to environmental contaminants, such as endocrine disrupting compounds (EDC), has been recently emphasized. Given this important public health concern, regulation agencies need novel simple and fast biological tests to evaluate chemical risks. In this context, we developed a new in vivo bioassay called StAZ (Steatogenic Assay on Zebrafish) using an alternative model to animal experimentation, the zebrafish larva, to screen EDCs for their steatogenic properties. Taking advantage of the transparency of zebrafish larvae, we established a method based on fluorescent staining with Nile red to estimate liver lipid content. Following testing of known steatogenic molecules, 10 EDCs suspected to induce metabolic disorders were screened and DDE, the main metabolite of the insecticide DDT, was identified as a potent inducer of steatosis. To confirm this and optimize the assay, we used it in a transgenic zebrafish line expressing a blue fluorescent liver protein reporter. To obtain insight into DDE's effect, the expression of several genes related to steatosis was analyzed; an up-regulation of scd1 expression, probably relying on PXR activation, was found, partly responsible for both membrane remodeling and steatosis.
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Affiliation(s)
- Hélène Le Mentec
- INSERM, EHESP, IRSET (Institut de Recherche en Santé Environnement et Travail)-UMR_S 1085, University of Rennes, 35000 Rennes, France
| | - Emmanuelle Monniez
- INSERM, EHESP, IRSET (Institut de Recherche en Santé Environnement et Travail)-UMR_S 1085, University of Rennes, 35000 Rennes, France
| | - Antoine Legrand
- INSERM, EHESP, IRSET (Institut de Recherche en Santé Environnement et Travail)-UMR_S 1085, University of Rennes, 35000 Rennes, France
| | - Céline Monvoisin
- UMR 1236-MOBIDIC, INSERM, Université Rennes, Etablissement Français du Sang Bretagne, 35043 Rennes, France
| | - Dominique Lagadic-Gossmann
- INSERM, EHESP, IRSET (Institut de Recherche en Santé Environnement et Travail)-UMR_S 1085, University of Rennes, 35000 Rennes, France
| | - Normand Podechard
- INSERM, EHESP, IRSET (Institut de Recherche en Santé Environnement et Travail)-UMR_S 1085, University of Rennes, 35000 Rennes, France
- Correspondence:
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Roy MA, Gridley CK, Li S, Park Y, Timme-Laragy AR. Nrf2a dependent and independent effects of early life exposure to 3,3'-dichlorobiphenyl (PCB-11) in zebrafish (Danio rerio). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2022; 249:106219. [PMID: 35700651 PMCID: PMC9701526 DOI: 10.1016/j.aquatox.2022.106219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 04/28/2022] [Accepted: 06/08/2022] [Indexed: 06/03/2023]
Abstract
The environmental pollutant 3,3'-dichlorobiphenyl (PCB-11) is a lower-chlorinated polychlorinated biphenyl (PCB) congener present in air and water samples. Both PCB-11 and its metabolite, 4-PCB-11-Sulfate, are detected in humans, including in pregnant women. Previous research in zebrafish (Danio rerio) has shown that 0.2 μM exposures to 4-PCB-11-Sulfate starting at 1 day post fertilization (dpf) increase hepatic neutral lipid accumulation in larvae at 15 dpf. Here, we explored whether nuclear factor erythroid 2-related factor 2 (Nrf2), known as the master-regulator of the adaptive response to oxidative stress, contributes to metabolic impacts of 4-PCB-11-Sulfate. For this work, embryos were collected from homozygous wildtype or Nrf2a mutant adult zebrafish that also express GFP in pancreatic β-cells, rendering Tg(ins:GFP;nrf2afh318+/+) and Tg(ins:GFP;nrf2afh318-/-) lines. Exposures were conducted from 1-15 dpf to either 0.05% DMSO or DMSO-matched 0.2 µM 4-PCB-11-Sulfate, and at 15 dpf subsets of larvae were imaged for overall morphology, primary pancreatic islet area, and collected for fatty acid profiling and RNAseq. At 15 dpf, independent of genotype, fish exposed to 4-PCB-11-Sulfate survived significantly more at 80-85% compared to 65-73% survival for unexposed fish, and had primary pancreatic islets 8% larger compared to unexposed fish. Fish growth at 15 dpf was dependent on genotype, with Nrf2a mutant fish a significant 3-5% shorter than wildtype fish, and an interaction effect was observed where Nrf2a mutant fish exposed to 4-PCB-11-Sulfate experienced a significant 29% decrease in the omega-3 fatty acid DHA compared to unexposed mutant fish. RNAseq revealed 308 differentially expressed genes, most of which were dependent on genotype. These findings suggest that Nrf2a plays an important role in growth as well as for DHA production in the presence of 4-PCB-11-Sulfate. Further research would be beneficial to understand the importance of Nrf2a throughout the lifecourse, especially in the context of toxicant exposures.
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Affiliation(s)
- Monika A Roy
- Department of Environmental Health Sciences, University of Massachusetts Amherst, 171B Goessmann Building, 686 N Pleasant St, Amherst, MA 01003, USA; Biotechnology Training Program, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Charlotte K Gridley
- Department of Environmental Health Sciences, University of Massachusetts Amherst, 171B Goessmann Building, 686 N Pleasant St, Amherst, MA 01003, USA
| | - Sida Li
- Department of Food Science, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Yeonhwa Park
- Department of Food Science, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Alicia R Timme-Laragy
- Department of Environmental Health Sciences, University of Massachusetts Amherst, 171B Goessmann Building, 686 N Pleasant St, Amherst, MA 01003, USA.
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Huang W, Xiao J, Shi X, Zheng S, Li H, Liu C, Wu K. Effects of di-(2-ethylhexyl) phthalate (DEHP) on behavior and dopamine signaling in zebrafish (Danio rerio). ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2022; 93:103885. [PMID: 35595013 DOI: 10.1016/j.etap.2022.103885] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 05/05/2022] [Accepted: 05/12/2022] [Indexed: 02/05/2023]
Abstract
Di (2-ethylhexyl) phthalate (DEHP) is a widely used plasticizer, also known as a developmental toxicant, but its neurobehavioral toxicity remains elusive. This study evaluated the neurobehavioral toxicity and its possible mechanism in larval zebrafish. Embryos at gastrula period (~6 h post fertilization, hpf) were exposure to DEHP (0, 1, 2.5, 5 and 10 mg/L) for 7 days. Spontaneous tail movement in embryos and swimming activity in larvae were monitored. Alterations in the mRNA expression of genes involved in dopamine signaling and apoptosis pathway were assessed. In situ apoptotic cells were assessed by Acridine orange staining, and oxidative damage were measured using enzymatic assay. The behavior results showed that DEHP inhibited spontaneous tail movement and decreased locomotor activities in the light/dark behavioral test. Meanwhile, behavioral changes were accompanied by increased apoptosis and malondialdehyde (MDA) content, decreased superoxide dismutase (SOD) activity and dopamine (DA) content, and perturbed the expression of genes associated with the synthesis (th), reuptake (dat) and metabolism (mao) of DA, with dopamine receptors (DRs), and with the apoptosis pathway (p53, bax, bcl2, caspase-3, caspase-8, caspase-9). The findings will help to illuminate the possible neurobehavioral toxicity mechanisms of organism exposure to DEHP.
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Affiliation(s)
- Wenlong Huang
- Department of Preventive Medicine, Shantou University Medical College, Shantou 515041, Guangdong, PR China
| | - Jiefeng Xiao
- Department of Preventive Medicine, Shantou University Medical College, Shantou 515041, Guangdong, PR China
| | - Xiaoling Shi
- Department of Preventive Medicine, Shantou University Medical College, Shantou 515041, Guangdong, PR China
| | - Shukai Zheng
- Department of Preventive Medicine, Shantou University Medical College, Shantou 515041, Guangdong, PR China
| | - Haiyi Li
- Department of Preventive Medicine, Shantou University Medical College, Shantou 515041, Guangdong, PR China
| | - Caixia Liu
- Department of Preventive Medicine, Shantou University Medical College, Shantou 515041, Guangdong, PR China
| | - Kusheng Wu
- Department of Preventive Medicine, Shantou University Medical College, Shantou 515041, Guangdong, PR China
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Review on Toxic Effects of Di(2-ethylhexyl) Phthalate on Zebrafish Embryos. TOXICS 2021; 9:toxics9080193. [PMID: 34437511 PMCID: PMC8402419 DOI: 10.3390/toxics9080193] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 08/02/2021] [Accepted: 08/14/2021] [Indexed: 12/28/2022]
Abstract
Di(2-ethylhexyl) phthalate (DEHP) is widely used as a plasticizer in consumer products. People are continuously exposed to DEHP through ingestion, inhalation and dermal absorption. From epidemiological studies, DEHP has been shown to associate with various adverse health effects, such as reproductive abnormalities and metabolic diseases. Health concerns have been raised regarding DEHP exposures; therefore, relevant risk assessment has become necessary through toxicological testing of DEHP. In the past 10 years, an increasing number of DEHP toxicity studies have been using zebrafish embryos as an in vivo model due to their high fecundity, rapid embryonic development as well as optical transparency, which have now been established as an alternative of the more conventional rodent model. The aim of the present paper is to review the effects of acute (from embryo stage to ≤1 week) and chronic (from embryo stage to >1 week) DEHP exposures on zebrafish, which start from the embryonic stage, and to analyze acute and potential long-term effects induced by acute exposure and effects induced by chronic exposure of DEHP upon subjecting to exposures, starting from the embryonic stage to different developmental stages, with a view to facilitate risk assessments on DEHP exposures.
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Venezia O, Islam S, Cho C, Timme-Laragy AR, Sant KE. Modulation of PPAR signaling disrupts pancreas development in the zebrafish, Danio rerio. Toxicol Appl Pharmacol 2021; 426:115653. [PMID: 34302850 DOI: 10.1016/j.taap.2021.115653] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/16/2021] [Accepted: 07/17/2021] [Indexed: 11/15/2022]
Abstract
Peroxisome Proliferator Activated Receptors (PPARs) are transcription factors that regulate processes such as lipid and glucose metabolism. Synthetic PPAR ligands, designed as therapeutics for metabolic disease, provide a tool to assess the relationship between PPAR activity and pancreas development in vivo, an area that remains poorly characterized. Here, we aim to assess the effects of PPAR agonists and antagonists on gene expression, embryonic morphology and pancreas development in transgenic zebrafish embryos. To evaluate developmental perturbations, we assessed gross body and pancreas morphology at 4 days post fertilization (dpf) in response to developmental exposures with PPARα, PPARγ, and PPARβ/δ agonists and antagonists at 0, 0.01, 0.1, 1, and 10 μM concentrations. All ligand exposures, with the exception of the PPARα agonist, resulted in significantly altered fish length and yolk sac area. PPARγ agonist and antagonist had higher incidence of darkened yolk sac and craniofacial deformities, whereas PPARα antagonist had higher incidence of pericardial edema and death. Significantly reduced endocrine pancreas area was observed in both PPARγ ligands and PPARα agonist exposed embryos, some of which also exhibited aberrant endocrine pancreas morphology. Both PPARβ/δ ligands caused reduced exocrine pancreas length and novel aberrant phenotype, and disrupted gene expression of pancreatic targets pdx1, gcga, and try. Lipid staining was performed at 8 dpf and revealed altered lipid accumulation consistent with isoform function. These data indicate chronic exposure to synthetic ligands may induce morphological and pancreatic defects in zebrafish embryos.
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Affiliation(s)
- Olivia Venezia
- Department of Environmental Health Sciences, University of Massachusetts-Amherst, Amherst, MA, United States of America
| | - Sadia Islam
- Department of Environmental Health Sciences, University of Massachusetts-Amherst, Amherst, MA, United States of America
| | - Christine Cho
- School of Public Health, San Diego State University, San Diego, CA, United States of America
| | - Alicia R Timme-Laragy
- Department of Environmental Health Sciences, University of Massachusetts-Amherst, Amherst, MA, United States of America
| | - Karilyn E Sant
- Department of Environmental Health Sciences, University of Massachusetts-Amherst, Amherst, MA, United States of America; School of Public Health, San Diego State University, San Diego, CA, United States of America.
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