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La CGB, Huff Hartz KE, Arkles M, Grim ME, Acuña S, Sadro S, Lydy MJ. A baseline assessment of contamination in the Sacramento deep water ship channel. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 360:124606. [PMID: 39053801 DOI: 10.1016/j.envpol.2024.124606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 07/02/2024] [Accepted: 07/22/2024] [Indexed: 07/27/2024]
Abstract
The Sacramento Deep Water Ship Channel (SDWSC) in the San Francisco Estuary, which is an active commercial port, is critical habitat for pelagic fish species including delta smelt (Hypomesus transpacificus), longfin smelt (Spirinchus thaleichthys), and Sacramento perch (Archoplites interruptus). Pelagic organism decline has been attributed to covarying factors such as manipulation of habitat, introduction of invasive species, decrease in food production, and contaminant exposure. Quantification of bioavailable toxicant loads in the SDWSC is limited despite previous surveys that have detected elevated contaminant concentrations in the sediments. Therefore, the focus of the present study was to characterize the bioavailability of the contaminants in the SDWSC from six sites along the channel. At each site, organochlorine pesticides (OCPs), pyrethroid insecticides, polyaromatic hydrocarbons (PAHs), and polychlorinated biphenyls (PCBs) were quantified in sediment, zooplankton, and suspended solids. In addition, Tenax extraction was used to measure the bioaccessible fraction of sediment-associated contaminants freely dissolved in the water. Bioaccessible contaminants in the sediment provided an uptake route for these stressors into invertebrates and fish with bioaccessible OCPs being found at all sites, particularly 4,4'-dichlorodiphenyldichloroethylene (DDE). Bifenthrin was the only pyrethroid detected in the chosen matrices and it was found at concentrations below levels of concern. Bioaccessible PAHs were found at all sites, with highest detections for phenanthrene and pyrene. No PCBs were detected in sediments, but were detected in both suspended solids and zooplankton. Contaminant concentrations overall were significantly higher in suspended solids, followed by zooplankton and sediments. The highest sediment concentrations of DDE, fluoranthene, pyrene, and dibenzo[a,h]anthracene exceeded sediment quality benchmarks indicating potential risk to sediment-dwelling species. Finally, elevated contaminant levels were found in both suspended solids and zooplankton, suggesting additional risk to pelagic species in the SDWSC.
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Affiliation(s)
- Cristina G B La
- Center for Fisheries, Aquaculture and Aquatic Sciences, School of Biological Sciences, Southern Illinois University, Carbondale, IL, 62901, USA
| | - Kara E Huff Hartz
- Center for Fisheries, Aquaculture and Aquatic Sciences, School of Biological Sciences, Southern Illinois University, Carbondale, IL, 62901, USA
| | - Mia Arkles
- Center for Fisheries, Aquaculture and Aquatic Sciences, School of Biological Sciences, Southern Illinois University, Carbondale, IL, 62901, USA
| | - Melissa E Grim
- Department of Environmental Science and Policy, University of California Davis, Davis, CA, 95616, USA
| | - Shawn Acuña
- Metropolitan Water District of Southern California, Sacramento, CA, 95814, USA
| | - Steven Sadro
- Department of Environmental Science and Policy, University of California Davis, Davis, CA, 95616, USA
| | - Michael J Lydy
- Center for Fisheries, Aquaculture and Aquatic Sciences, School of Biological Sciences, Southern Illinois University, Carbondale, IL, 62901, USA.
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2
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Cossaboon JM, Teh SJ, Sant KE. Reproductive toxicity of DDT in the Japanese medaka fish model: Revisiting the impacts of DDT+ on female reproductive health. CHEMOSPHERE 2024; 357:141967. [PMID: 38615950 PMCID: PMC11160350 DOI: 10.1016/j.chemosphere.2024.141967] [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: 01/31/2024] [Revised: 03/21/2024] [Accepted: 04/08/2024] [Indexed: 04/16/2024]
Abstract
The organochlorine pesticide dichlorodiphenyltrichloroethane (DDT) is an endocrine-disrupting compound (EDC) that has been banned by most countries for decades. However, it continues to be detected in nearly all humans and wildlife due to its biological and environmental persistence. The ovarian dysgenesis syndrome hypothesis speculates that exposure to EDCs during sensitive developmental windows such as early gonadal differentiation lead to reproductive disorders later in life. Yet, mechanisms by which DDT affects developing gonads remain unclear due to the inherent challenge of getting developmental exposure data from adults presenting with reproductive disease. The Japanese medaka (Oryzias latipes) is a valuable fish model for sex-specific toxicological studies due to its chromosomal sex determination, external embryonic development, short generation time, and extensively mapped genome. It is well documented that medaka exposed to DDT and its metabolites and byproducts (herein referred to as DDT+) at different developmental time points experience permanent alterations in gonadal morphology, reproductive success, and molecular and hormonal signaling. However, the overwhelming majority of studies focus primarily on functional and morphological outcomes in males and females and have rarely investigated long-term transcriptional or molecular effects. This review summarizes previous experimental findings and the state of our knowledge concerning toxic effects DDT + on reproductive development, fertility, and health in the valuable medaka model. It also identifies gaps in knowledge, emphasizing a need for more focus on molecular mechanisms of ovarian endocrine disruption using enhanced molecular tools that have become increasingly available over the past few decades. Furthermore, DDT forms a myriad of over 45 metabolites and transformation products in biota and the environment, very few of which have been evaluated for environmental abundance or health effects. This reinforces the demand for high throughput and economical in vivo models for predictive toxicology screening, and the Japanese medaka is uniquely positioned to meet this need.
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Affiliation(s)
| | - Swee J Teh
- School of Veterinary Medicine, University of California, Davis, CA, 95616, USA
| | - Karilyn E Sant
- School of Public Health, San Diego State University, San Diego, CA, 92182, USA.
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3
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Huff Hartz KE, Knaub KJ, Habibullah-Al-Mamun M, Connon RE, Whitledge GW, Segarra A, Lydy MJ. Using an internal body residue approach to assess acute pesticide toxicity in juvenile Chinook salmon (Oncorhynchus tshawytscha). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 346:123364. [PMID: 38228259 DOI: 10.1016/j.envpol.2024.123364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 12/13/2023] [Accepted: 01/13/2024] [Indexed: 01/18/2024]
Abstract
The use of internal body residues has the potential to improve toxicological assessments of hydrophobic pesticides. The acute toxicity of three classes of pesticides were assessed in juvenile Chinook salmon using internal body residues. Chinook salmon were exposed to two current-use pesticides bifenthrin and fipronil, and 4,4'- dichlorodiphenyldichloroethylene (DDE), which is a degradation product of the legacy pesticide dichlorodiphenyltrichloroethane (DDT). After 96-h of aqueous exposure to each pesticide, the pesticide content in whole-body Chinook salmon homogenates was measured using gas chromatography/mass spectrometry with methane negative chemical ionization. The wet-weight (ww) normalized lethal residue at 50% mortality (LR50) was lowest for bifenthrin (0.654 nmol/g ww), followed by fipronil (7.17 nmol/g ww) and the sum of fipronil and its sulfone, sulfide, and desulfinyl degradation products (8.72 nmol/g ww). No lethality was observed for DDE, even at the highest body residue (>116 nmol/g ww). LR50 estimates were also normalized to dry weight and lipid content and compared to field-caught fish to assess risk. The use of a risk quotient approach indicated that bifenthrin imparts the highest risk of acute toxicity in juvenile Chinook salmon among the three pesticides tested. In comparison to external dose metrics, the use of internal body residues has the potential to improve risk assessment by providing a more direct link between pesticide concentration at the receptor site and toxicological effects.
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Affiliation(s)
- Kara E Huff Hartz
- Center for Fisheries, Aquaculture and Aquatic Sciences and Department of Zoology, Southern Illinois University, Carbondale, IL, 62901, USA
| | - Katie J Knaub
- Center for Fisheries, Aquaculture and Aquatic Sciences and Department of Zoology, Southern Illinois University, Carbondale, IL, 62901, USA
| | - Md Habibullah-Al-Mamun
- Center for Fisheries, Aquaculture and Aquatic Sciences and Department of Zoology, Southern Illinois University, Carbondale, IL, 62901, USA; Department of Fisheries, University of Dhaka, Dhaka 1000, Bangladesh
| | - Richard E Connon
- School of Veterinary Medicine, University of California Davis, Davis, CA, 95616, USA
| | - Greg W Whitledge
- Center for Fisheries, Aquaculture and Aquatic Sciences and Department of Zoology, Southern Illinois University, Carbondale, IL, 62901, USA
| | - Amélie Segarra
- School of Veterinary Medicine, University of California Davis, Davis, CA, 95616, USA
| | - Michael J Lydy
- Center for Fisheries, Aquaculture and Aquatic Sciences and Department of Zoology, Southern Illinois University, Carbondale, IL, 62901, USA.
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4
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Mohanty B. Pesticides exposure and compromised fitness in wild birds: Focusing on the reproductive endocrine disruption. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2024; 199:105800. [PMID: 38458691 DOI: 10.1016/j.pestbp.2024.105800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 12/11/2023] [Accepted: 01/19/2024] [Indexed: 03/10/2024]
Abstract
Exposure of pesticides to wildlife species, especially on the aspect of endocrine disruption is of great concern. Wildlife species are more at risk to harmful exposures to the pesticides in their natural habitat through diet and several other means. Species at a higher tropic level in the food chain are more susceptible to the deleterious effects due to sequential biomagnifications of the pesticides/metabolites. Pesticides directly affect fitness of the species in the wild causing reproductive endocrine disruption impairing the hormones of the gonads and thyroid glands as reproduction is under the influence of cross regulations of these hormones. This review presents a comprehensive compilation of important literatures on the impact of the current use pesticides in disruption of both the hypothalamic-pituitary-gonadal and hypothalamic-pituitary-thyroid axes particularly in birds addressing impacts on the reproductive impairments and overall fitness. In addition to the epidemiological studies, laboratory investigations those provide supportive evidences of the probable mechanisms of disruption in the wild also have been incorporated in this review. To accurately predict the endocrine-disruption of the pesticides as well as to delineate the risk associated with potential cumulative effects, studies are to be more focused on the environmentally realistic exposure dose, mixture pesticide exposures and transgenerational effects. In addition, strategic screening/appropriate methodologies have to be developed to reveal the endocrine disruption potential of the contemporary use pesticides. Demand for adequate quantitative structure-activity relationships and insilico molecular docking studies for timely validation have been highlighted.
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5
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Consales G, Bottaro M, Mancusi C, Neri A, Sartor P, Voliani A, D'Agostino A, Marsili L. Persistent Organic Pollutants (POPs) in three bathyal chondrichthyes from the North-Western Mediterranean Sea. MARINE POLLUTION BULLETIN 2023; 196:115647. [PMID: 37832499 DOI: 10.1016/j.marpolbul.2023.115647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 10/04/2023] [Accepted: 10/06/2023] [Indexed: 10/15/2023]
Abstract
The deep-sea can act as a sink for legacy contaminants such as organochlorines (OCs), causing damages in its inhabitants for their persistence and their prolonged effects in the organisms. HCB, DDT and its isomers, and 28 PCBs congeners were detected in muscle and embryonic tissues of three deep-sea chondrichthyes Chimaera monstrosa (n = 16), Dalatias licha (n = 12) and Etmopterus spinax (n = 51) sampled in Ligurian and Tyrrhenian Sea (Mediterranean Sea). Contaminant distribution in E. spinax and C. monstrosa was PCBs > DDTs ≫ HCB while in D. licha was DDTs > PCBs ≫ HCB. Statistically significant differences were highlighted in OC levels among the species, but no such differences were found among sexes. Ratios between DDT isomers highlighted an historical input of the pesticide in the environment. For the first time was also demonstrated maternal transfer in deep water chondrichthyes, specifically in E. spinax where was highlighted that transfer of contaminants increases with increasing compound's Log Kow.
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Affiliation(s)
- Guia Consales
- Department of Physical Sciences, Earth and Environment, University of Siena, Via Mattioli 4, Siena 53100, Italy; Department of Integrative Marine Ecology, Genoa Marine Centre, Stazione Zoologica Anton Dohrn, Italian National Institute for Marine Biology, Ecology and Biotechnology, Villa del Principe, Piazza del Principe 4, 16126 Genoa, Italy
| | - Massimiliano Bottaro
- Department of Integrative Marine Ecology, Genoa Marine Centre, Stazione Zoologica Anton Dohrn, Italian National Institute for Marine Biology, Ecology and Biotechnology, Villa del Principe, Piazza del Principe 4, 16126 Genoa, Italy.
| | - Cecilia Mancusi
- Department of Physical Sciences, Earth and Environment, University of Siena, Via Mattioli 4, Siena 53100, Italy; ARPAT Regional Agency for Environmental Protection of Tuscany, Via Marradi 114, 57126 Livorno, Italy
| | - Alessandra Neri
- Department of Physical Sciences, Earth and Environment, University of Siena, Via Mattioli 4, Siena 53100, Italy; Consortium for the Inter-University Center of Marine Biology and Applied Ecology "G.Bacci", Viale Nazario Sauro 4, 57128, Livorno, Italy
| | - Paolo Sartor
- Consortium for the Inter-University Center of Marine Biology and Applied Ecology "G.Bacci", Viale Nazario Sauro 4, 57128, Livorno, Italy
| | - Alessandro Voliani
- ARPAT Regional Agency for Environmental Protection of Tuscany, Via Marradi 114, 57126 Livorno, Italy
| | | | - Letizia Marsili
- Department of Physical Sciences, Earth and Environment, University of Siena, Via Mattioli 4, Siena 53100, Italy; Inter-University Center of Cetacean Research (CIRCE), Via Mattioli 4, Siena 53100, Italy
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6
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Nagar N, Saxena H, Pathak A, Mishra A, Poluri KM. A review on structural mechanisms of protein-persistent organic pollutant (POP) interactions. CHEMOSPHERE 2023; 332:138877. [PMID: 37164191 DOI: 10.1016/j.chemosphere.2023.138877] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 04/20/2023] [Accepted: 05/06/2023] [Indexed: 05/12/2023]
Abstract
With the advent of the industrial revolution, the accumulation of persistent organic pollutants (POPs) in the environment has become ubiquitous. POPs are halogen-containing organic molecules that accumulate, and remain in the environment for a long time, thus causing toxic effects in living organisms. POPs exhibit a high affinity towards biological macromolecules such as nucleic acids, proteins and lipids, causing genotoxicity and impairment of homeostasis in living organisms. Proteins are essential members of the biological assembly, as they stipulate all necessary processes for the survival of an organism. Owing to their stereochemical features, POPs and their metabolites form energetically favourable complexes with proteins, as supported by biological and dose-dependent toxicological studies. Although individual studies have reported the biological aspects of protein-POP interactions, no comprehensive study summarizing the structural mechanisms, thermodynamics and kinetics of protein-POP complexes is available. The current review identifies and classifies protein-POP interaction according to the structural and functional basis of proteins into five major protein targets, including digestive and other enzymes, serum proteins, transcription factors, transporters, and G-protein coupled receptors. Further, analysis detailing the molecular interactions and structural mechanism evidenced that H-bonds, van der Waals, and hydrophobic interactions essentially mediate the formation of protein-POP complexes. Moreover, interaction of POPs alters the protein conformation through kinetic and thermodynamic processes like competitive inhibition and allostery to modulate the cellular signalling processes, resulting in various pathological conditions such as cancers and inflammations. In summary, the review provides a comprehensive insight into the critical structural/molecular aspects of protein-POP interactions.
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Affiliation(s)
- Nupur Nagar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Harshi Saxena
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Aakanksha Pathak
- Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Amit Mishra
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Jodhpur, 342011, Rajasthan, India
| | - Krishna Mohan Poluri
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India; Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India.
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7
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Varshney S, Gora AH, Kiron V, Siriyappagouder P, Dahle D, Kögel T, Ørnsrud R, Olsvik PA. Polystyrene nanoplastics enhance the toxicological effects of DDE in zebrafish (Danio rerio) larvae. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 859:160457. [PMID: 36435242 DOI: 10.1016/j.scitotenv.2022.160457] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/15/2022] [Accepted: 11/20/2022] [Indexed: 06/16/2023]
Abstract
Anthropogenic releases of plastics, persistent organic pollutants (POPs), and heavy metals can impact the environment, including aquatic ecosystems. Nanoplastics (NPs) have recently emerged as pervasive environmental pollutants that have the ability to adsorb POPs and can cause stress in organisms. Among POPs, DDT and its metabolites are ubiquitous environmental pollutants due to their long persistence. Despite the discontinued use of DDT in Europe, DDT and its metabolites (primarily p,p'-DDE) are still found at detectable levels in fish feed used in salmon aquaculture. Our study aimed to look at the individual and combined toxicity of NPs (50 mg/L polystyrene) and DDE (100 μg/L) using zebrafish larvae as a model. We found no significant morphological, cardiac, respiratory, or behavioural changes in zebrafish larvae exposed to NPs alone. Conversely, morphological, cardiac and respiratory alterations were observed in zebrafish larvae exposed to DDE and NPs + DDE. Interestingly, behavioural changes were only observed in zebrafish larvae exposed to NPs + DDE. These findings were supported by RNA-seq results, which showed that some cardiac, vascular, and immunogenic pathways were downregulated only in zebrafish larvae exposed to NPs + DDE. In summary, we found an enhanced toxicological impact of DDE when combined with NPs.
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Affiliation(s)
- Shubham Varshney
- Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway
| | - Adnan H Gora
- Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway
| | - Viswanath Kiron
- Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway
| | | | - Dalia Dahle
- Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway
| | - Tanja Kögel
- Institute of Marine Research, Bergen, Norway; Faculty of Mathematics and Natural Sciences, University of Bergen, Norway
| | | | - Pål A Olsvik
- Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway; Institute of Marine Research, Bergen, Norway.
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8
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Jiang J, He B, Wei Y, Cui J, Zhang Q, Liu X, Liu D, Wang P, Zhou Z. The toxic effects of combined exposure of chlorpyrifos and p, p'-DDE to zebrafish (Danio rerio) and tissue bioaccumulation. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2022; 248:106194. [PMID: 35623197 DOI: 10.1016/j.aquatox.2022.106194] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/23/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
Pesticides are widely used and frequently detected in the environment. The evaluation on the toxic effects of the co-exposure of two or more pesticides or related metabolites could reflect the real situation of the exposing risks. In this study, zebrafish was used as a model to investigate the potential toxic interactions of chlorpyrifos and 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (p,p'-DDE) on the survival rate, oxidative stress response and neurotoxicity, as well as their bioaccumulation and distribution in tissues. Co-exposure of chlorpyrifos and p,p'-DDE resulted in significant additive acute toxic effects on adult zebrafish with model deviation ratio (MDR) = 1.64. Both 7-day short-term at 1% LC50 and 35-day long-term at 0.5% LC50 co-exposure of chlorpyrifos with p,p'-DDE (50 and 100 µg/L) significantly reduced the survival rate of zebrafish colony to 75 and 82.5%. Co-exposure of chlorpyrifos and p,p'-DDE contributed to increased activity of antioxidant enzyme CAT, SOD and GST and excessive MDA generation, and decreased activity of CarE, CYP450 and AChE, compared with either single exposure of them. In co-exposure, the bioaccumulation of chlorpyrifos and p,p'-DDE was significantly different from the single exposure group. Overall, this study unraveled the potential toxic interaction of chlorpyrifos and p,p'-DDE on zebrafish and provided reference for environmental risk assessment of pesticide mixture.
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Affiliation(s)
- Jiangong Jiang
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, PR China
| | - Bingying He
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, PR China
| | - Yimu Wei
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, PR China
| | - Jingna Cui
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, PR China
| | - Qiang Zhang
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, PR China
| | - Xueke Liu
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, PR China
| | - Donghui Liu
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, PR China
| | - Peng Wang
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, PR China.
| | - Zhiqiang Zhou
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, PR China
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9
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Anzalone SE, Fuller NW, Huff Hartz KE, Fulton CA, Whitledge GW, Magnuson JT, Schlenk D, Acuña S, Lydy MJ. Pesticide residues in juvenile Chinook salmon and prey items of the Sacramento River watershed, California - A comparison of riverine and floodplain habitats. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 303:119102. [PMID: 35257807 DOI: 10.1016/j.envpol.2022.119102] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 02/28/2022] [Accepted: 03/02/2022] [Indexed: 06/14/2023]
Abstract
Juvenile Chinook salmon (Oncorhynchus tshawytscha) of the Sacramento River system encounter many anthropogenically-induced stressors while rearing and migrating to the Pacific Ocean. Located in a prominent agricultural region, the watershed serves as a source of notable contaminants including pesticides. Salmon rearing in riverine and floodplain areas are potentially exposed to these compounds via dietary exposure, which can vary based on selected food webs. Previous studies have suggested that juvenile Chinook salmon rearing in riverine and floodplain environments of the Sacramento River watershed are characterized by different dietary preferences, with potential for contrasting pesticide exposure between habitats. To examine the potential for pesticide exposure, juvenile Chinook salmon and known dietary items were collected in the mainstem Sacramento River and an adjacent floodplain, the Yolo Bypass, in 2019 and 2020, and analyzed for 33 pesticides, including degradates and isomers. Organochlorine pesticides including the DDX group (p,p'-DDT, p,p'-DDD and p,p'-DDE) were prevalent in all examined biota. There was a significantly greater number of total pesticide detections across all classes in zooplankton compared to macroinvertebrates, coupled with higher bifenthrin concentrations in zooplankton across regions and years, which may indicate different exposure potential depending on fish dietary preferences. Detection frequencies and concentrations of organochlorines were higher in prey items during flooding than in drought conditions, suggesting resuspension of legacy compounds. Significantly higher concentrations of organochlorines were recorded in floodplain rearing fish compared to the Sacramento River. These findings suggest that within these habitats, juvenile Chinook salmon feeding primarily on zooplankton within the water column may be exposed to a greater range of pesticides than those feeding on benthic macroinvertebrates, and that the benefits of floodplain rearing may come at a cost of increased organochlorine exposure.
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Affiliation(s)
- Sara E Anzalone
- Center for Fisheries, Aquaculture, and Aquatic Sciences, Department of Zoology, Southern Illinois University, Carbondale, Illinois, 62901, USA.
| | - Neil W Fuller
- Center for Fisheries, Aquaculture, and Aquatic Sciences, Department of Zoology, Southern Illinois University, Carbondale, Illinois, 62901, USA.
| | - Kara E Huff Hartz
- Center for Fisheries, Aquaculture, and Aquatic Sciences, Department of Zoology, Southern Illinois University, Carbondale, Illinois, 62901, USA.
| | - Corie A Fulton
- Center for Fisheries, Aquaculture, and Aquatic Sciences, Department of Zoology, Southern Illinois University, Carbondale, Illinois, 62901, USA.
| | - Gregory W Whitledge
- Center for Fisheries, Aquaculture, and Aquatic Sciences, Department of Zoology, Southern Illinois University, Carbondale, Illinois, 62901, USA.
| | - Jason T Magnuson
- Department of Environmental Sciences, University of California Riverside, Riverside, CA, 92521, USA.
| | - Daniel Schlenk
- Department of Environmental Sciences, University of California Riverside, Riverside, CA, 92521, USA.
| | - Shawn Acuña
- Metropolitan Water District of Southern California, Sacramento, CA, 95814, USA.
| | - Michael J Lydy
- Center for Fisheries, Aquaculture, and Aquatic Sciences, Department of Zoology, Southern Illinois University, Carbondale, Illinois, 62901, USA.
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10
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Burgos-Aceves MA, Migliaccio V, Di Gregorio I, Paolella G, Lepretti M, Faggio C, Lionetti L. 1,1,1-trichloro-2,2-bis (p-chlorophenyl)-ethane (DDT) and 1,1-Dichloro-2,2-bis (p, p'-chlorophenyl) ethylene (DDE) as endocrine disruptors in human and wildlife: A possible implication of mitochondria. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2021; 87:103684. [PMID: 34052433 DOI: 10.1016/j.etap.2021.103684] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 04/14/2021] [Accepted: 05/25/2021] [Indexed: 06/12/2023]
Abstract
1,1,1-trichloro-2,2-bis (p-chlorophenyl)-ethane (DDT) and its main metabolite 1,1-Dichloro-2,2-bis (p, p'-chlorophenyl) ethylene (DDE) act as endocrine disruptors in humans and wildlife. Immunomodulatory functions have also been attributed to both xenobiotics. DDT was banned in the 1970s due to its toxicity, but it is still produced and used for indoor residual spraying with disease vector control purposes. Due to their persistence and lipophilic properties, DDT and DDE can bioaccumulate through the food chain, being stored in organisms' adipose depots. Their endocrine disruptor function is mediated by agonist or antagonist interaction with nuclear receptors. Present review aimed to provide an overview of how DDT and DDE exposure impacts reproductive and immune systems with estrogen-disrupting action in humans and wildlife. Studies showing DDT and DDE impact on mitochondrial function and apoptosis pathway will also be reviewed, suggesting the hypothesis of direct action on mitochondrial steroid receptors.
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Affiliation(s)
- Mario Alberto Burgos-Aceves
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy
| | - Vincenzo Migliaccio
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy
| | - Ilaria Di Gregorio
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy
| | - Gaetana Paolella
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy
| | - Marilena Lepretti
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, University of Messina, Viale F. Stagno d'Alcontres, 31, 98166 Messina, Italy
| | - Lillà Lionetti
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy.
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11
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Gao H, Li J, Zhao G, Li Y. 3,5,6-trichloro-2-pyridinol intensifies the effect of chlorpyrifos on the paracrine function of Sertoli cells by preventing binding of testosterone and the androgen receptor. Toxicology 2021; 460:152883. [PMID: 34352351 DOI: 10.1016/j.tox.2021.152883] [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: 04/24/2021] [Revised: 07/01/2021] [Accepted: 07/30/2021] [Indexed: 11/25/2022]
Abstract
3,5,6-Trichloro-2-pyridinol (TCP) is an important biomarker and one of the final metabolites of chlorpyrifos (CPF). TCP inhibits secretion of sex hormones. Similar to CPF, TCP can bind to sex steroid hormone receptors and decrease the secretion of sex hormones. However, little attention has been paid to the ability of TCP and CPF to interfere with androgen receptor (AR) in Sertoli cells. This study aimed to explain how TCP promotes the inhibitory effect of CPF on the paracrine function of Sertoli cells. Western blotting indicated that after 20 weeks of exposure, expression of AR in testes was significantly reduced by CPF. An in vitro assay measured the cytotoxicity of CPF, TCP and diethylphosphate (DEP) on viability of Sertoli cells by Cell Counting Kit-8. CPF cytotoxicity was greater than that of TCP, and TCP cytotoxicity was greater than that of DEP at concentrations of 1000 μmol/L. Western blotting indicated that TCP and CPF both decreased expression of AR and cAMP-response element binding protein phosphorylation, while DEP had no effect in Sertoli cells, which are important in regulating paracrine function of Sertoli cells. The fluorescence measurements and docking studies revealed that testosterone, CPF and TCP showed four types of intermolecular interactions with AR, highlighting alkyl bonds with some of the same amino acids. Compared with testosterone, CPF and TCP also showed significant synergistic interaction with AR. CPF interacted with more amino acids and interaction energy than TCP did. This research elucidates TCP in the antiandrogenic effect of CPF on the paracrine function and suggests that TCP or chemicals with a trichloropyridine structure must be considered during reproductive toxicity assessment of potential environmental pollutants.
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Affiliation(s)
- Haina Gao
- School of Food and Health, Beijing Technology and Business University, Beijing, 100048, China
| | - Jinwang Li
- School of Food and Health, Beijing Technology and Business University, Beijing, 100048, China.
| | - Guoping Zhao
- Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science and Nutritional Engineering, China Agricultural University, No. 17 Qinghua East Road, Haidian District, Beijing, 100083, China
| | - Yixuan Li
- Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science and Nutritional Engineering, China Agricultural University, No. 17 Qinghua East Road, Haidian District, Beijing, 100083, China
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12
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Guo D, Liu W, Yao T, Ma M, Wang Q, Qiu J, Qian Y. Combined endocrine disruptive toxicity of malathion and cypermethrin to gene transcription and hormones of the HPG axis of male zebrafish (Danio rerio). CHEMOSPHERE 2021; 267:128864. [PMID: 33340882 DOI: 10.1016/j.chemosphere.2020.128864] [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: 08/09/2020] [Revised: 10/29/2020] [Accepted: 10/31/2020] [Indexed: 06/12/2023]
Abstract
Cypermethrin (CYP) and malathion (MAT) have been widely used and are frequently detected in surface waters. The purpose of the present study was to investigate the endocrine disrupting toxicity of CYP, MAT, and CYP + MAT to 5-month-old male zebrafish (Danio rerio). After exposure, the hepatosomatic index (HSI) and gonadosomatic index (GSI) did not change significantly. Following exposure to the combination of 0.1 μg/L CYP +25 μg/L MAT, the E2 and VTG levels of male zebrafish were significantly increased compared to those after individual pesticide treatments. The molecular level of the hypothalamic-pituitary-gonadal (HPG) axis in zebrafish was studied; it was found that the expression of the estrogen-related genes, especially the vtg1 gene, was significantly altered in 0.1 μg/L CYP + 25 μg/L MAT. Overall, our observation indicated that CYP or MAT could disturb the hormonal balance, and their combination of 0.1 μg/L CYP +25 μg/L MAT could significantly enhance the estrogenic effect.
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Affiliation(s)
- Dongmei Guo
- Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, Zhejiang, China
| | - Wenping Liu
- Crop Germplasm Resources Institute, Jilin Academy of Agricultural Sciences, Changchun, 136100, China
| | - Tingshan Yao
- Citrus Research Institute, Southwest University, Chongqing, 400712, China
| | - Mengmeng Ma
- Key Laboratory of Agro-Product Quality and Safety of Ministry of Agriculture, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Qiang Wang
- Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, Zhejiang, China
| | - Jing Qiu
- Key Laboratory of Agro-Product Quality and Safety of Ministry of Agriculture, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Yongzhong Qian
- Key Laboratory of Agro-Product Quality and Safety of Ministry of Agriculture, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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13
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Requena-Mullor M, Navarro-Mena A, Wei R, López-Guarnido O, Lozano-Paniagua D, Alarcon-Rodriguez R. Evaluation of Gonadal Alterations in a Population Environmentally Exposed to a Mixture of Endocrine Active Pesticides. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:2355. [PMID: 33670911 PMCID: PMC7957776 DOI: 10.3390/ijerph18052355] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/19/2021] [Accepted: 02/22/2021] [Indexed: 12/14/2022]
Abstract
Although there are studies that show that some pesticides produce gonadal dysfunction and gonadal cancer in different animals, there are not many studiesregardinghumans. This study determined the prevalence and risk in humans of developing ovarian or testicular dysfunction or cancer in areas with distinct exposure to pesticides, which have endocrine disrupting properties. A population-based case-control study was carried out on humans living in ten health districts of Andalusia (Southern Spain) classified as areas of high or low environmental exposure to pesticides according to agronomic criteria. The study population included 5332 cases and 13,606 controls. Data were collected from computerized hospital records between 2000 and 2018.The risk of gonadal dysfunction or cancer was significantly higher in areas with higher use of pesticides in relation to those with lower use.
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Affiliation(s)
- Mar Requena-Mullor
- Department of Nursing, Physiotherapy and Medicine, University of Almería, 04120 Almería, Spain; (M.R.-M.); (D.L.-P.); (R.A.-R.)
| | | | - Ruqiong Wei
- Department of Rehabilitation Medicine, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China;
| | - Olga López-Guarnido
- Department of Legal Medicine and Toxicology, Medical School, University of Granada, 18016 Granada, Spain
| | - David Lozano-Paniagua
- Department of Nursing, Physiotherapy and Medicine, University of Almería, 04120 Almería, Spain; (M.R.-M.); (D.L.-P.); (R.A.-R.)
| | - Raquel Alarcon-Rodriguez
- Department of Nursing, Physiotherapy and Medicine, University of Almería, 04120 Almería, Spain; (M.R.-M.); (D.L.-P.); (R.A.-R.)
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14
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Endocrine disruptors in teleosts: Evaluating environmental risks and biomarkers. AQUACULTURE AND FISHERIES 2021. [DOI: 10.1016/j.aaf.2020.07.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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15
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Martyniuk CJ, Mehinto AC, Denslow ND. Organochlorine pesticides: Agrochemicals with potent endocrine-disrupting properties in fish. Mol Cell Endocrinol 2020; 507:110764. [PMID: 32112812 PMCID: PMC10603819 DOI: 10.1016/j.mce.2020.110764] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 02/01/2020] [Accepted: 02/18/2020] [Indexed: 12/24/2022]
Abstract
Organochlorine pesticides (OCPs) are persistent environmental contaminants that act as endocrine disruptors and organ system toxicants. These pesticides (e.g. dichlorodiphenyltrichloroethane (DDT), dieldrin, toxaphene, among others) are ranked as some of the most concerning chemicals for human health. These pesticides (1) act as teratogens, (2) are neuroendocrine disruptors, (3) suppress the immune and reproductive systems, and (4) dysregulate lipids and metabolism. Using a computational approach, we revealed enriched endocrine-related pathways in the Comparative Toxicogenomics Database sensitive to this chemical class, and these included reproduction (gonadotropins, estradiol, androgen, steroid biosynthesis, oxytocin), thyroid hormone, and insulin. Insight from the Tox21 and ToxCast programs confirm that these agrochemicals activate estrogen receptors, androgen receptors, and retinoic acid receptors with relatively high affinity, although differences exist in their potency. We propose an adverse outcome pathway for OCPs toxicity in the fish testis as a novel contribution to further understanding of OCP-induced toxicity. Organochlorine pesticides, due to their persistence and high toxicity to aquatic and terrestrial wildlife as well as humans, remain significant agrochemicals of concern.
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Affiliation(s)
- Christopher J Martyniuk
- Department of Physiological Sciences, Center for Environmental and Human Toxicology, UF, USA; Genetics Institute, College of Veterinary Medicine, University of Florida, Gainesville, FL, 32611, USA
| | - Alvine C Mehinto
- Southern California Coastal Water Research Project Authority, Costa Mesa, CA, 92626, CA, USA
| | - Nancy D Denslow
- Department of Physiological Sciences, Center for Environmental and Human Toxicology, UF, USA; Genetics Institute, College of Veterinary Medicine, University of Florida, Gainesville, FL, 32611, USA.
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16
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Otero-Ferrer F, Lättekivi F, Ord J, Reimann E, Kõks S, Izquierdo M, Holt WV, Fazeli A. Time-critical influences of gestational diet in a seahorse model of male pregnancy. ACTA ACUST UNITED AC 2020; 223:jeb.210302. [PMID: 31862853 PMCID: PMC7033721 DOI: 10.1242/jeb.210302] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 12/18/2019] [Indexed: 12/15/2022]
Abstract
Sex role reversal is not uncommon in the animal kingdom but is taken to the extreme by the Syngnathidae, in which male pregnancy is one of the most astonishing idiosyncrasies. However, critical and time-dependent environmental effects on developing embryos, such as those extensively studied in mammalian pregnancy, have not been investigated in the male pregnancy context. Here, we tested the hypothesis that seahorse pregnancy is subject to ‘critical windows’ of environmental sensitivity by feeding male long-snouted seahorses (Hippocampus reidi) a diet deficient in polyunsaturated fatty acids during specific periods before and during pregnancy. Despite embryos being nourished principally by maternally supplied yolk, we found that offspring morphology, fatty acid composition and gene expression profiles were influenced by paternal diet in a manner that depended critically on the timing of manipulation. Specifically, reception of a diet deficient in polyunsaturated fatty acids in the days preceding pregnancy resulted in smaller newborn offspring, while the same diet administered towards the end of pregnancy resulted in substantial alterations to newborn gene expression and elongation of the snout at 10 days old. Although paternal diet did not affect 10 day survival, the observed morphological alterations in some cases could have important fitness consequences in the face of natural selective pressures such as predation and food availability. Our results demonstrate that, under male pregnancy, fine-scale temporal variation in parental diet quality and subsequent critical window effects should not be overlooked as determinants of developing offspring fitness. Summary: Food quality has a time-dependent impact on the offspring of male seahorses, revealing new insights into male pregnancy and its potential adaptive importance for syngnathid offspring.
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Affiliation(s)
- Francisco Otero-Ferrer
- Grupo en Biodiversidad y Conservación, Instituto Universitario en Acuicultura Sostenible y Ecosistemas Marinos (IU-ECOAQUA), Universidad de Las Palmas de Gran Canaria, Marine Scientific and Technological Park, Carretera de Taliarte s/n, E-35214 Telde, Spain
| | - Freddy Lättekivi
- Institute of Biomedicine and Translational Medicine, Department of Pathophysiology, University of Tartu, Ravila 14b, 50411 Tartu, Estonia
| | - James Ord
- Institute of Biomedicine and Translational Medicine, Department of Pathophysiology, University of Tartu, Ravila 14b, 50411 Tartu, Estonia
| | - Ene Reimann
- Institute of Biomedicine and Translational Medicine, Department of Pathophysiology, University of Tartu, Ravila 14b, 50411 Tartu, Estonia
| | - Sulev Kõks
- Perron Institute for Neurological and Translational Science, RR Block, QE II Medical Centre, 8 Verdun Street, Nedlands, WA 6009, Australia
| | - Marisol Izquierdo
- Grupo de Investigación en Acuicultura, Instituto Universitario en Acuicultura Sostenible y Ecosistemas Marinos (IU-ECOAQUA), Universidad de Las Palmas de Gran Canaria, Marine Scientific and Technological Park, Carretera de Taliarte s/n, E-35214 Telde, Spain
| | - William Vincent Holt
- Academic Unit of Reproductive and Developmental Medicine, Department of Oncology and Metabolism, University of Sheffield, Level 4, Jessop Wing, Tree Root Walk, Sheffield S10 2SF, UK
| | - Alireza Fazeli
- Institute of Biomedicine and Translational Medicine, Department of Pathophysiology, University of Tartu, Ravila 14b, 50411 Tartu, Estonia .,Academic Unit of Reproductive and Developmental Medicine, Department of Oncology and Metabolism, University of Sheffield, Level 4, Jessop Wing, Tree Root Walk, Sheffield S10 2SF, UK
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17
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Morales-Prieto N, López de Lerma N, Pacheco IL, Huertas-Abril PV, Pérez J, Peinado R, Abril N. Protective effect of Pedro-Ximénez must against p,p'-DDE-induced liver damages in aged Mus spretus mice. Food Chem Toxicol 2020; 136:110984. [DOI: 10.1016/j.fct.2019.110984] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 11/14/2019] [Accepted: 11/17/2019] [Indexed: 02/07/2023]
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18
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Morales-Prieto N, Ruiz-Laguna J, Sheehan D, Abril N. Transcriptome signatures of p,p´-DDE-induced liver damage in Mus spretus mice. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 238:150-167. [PMID: 29554563 DOI: 10.1016/j.envpol.2018.03.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 02/19/2018] [Accepted: 03/04/2018] [Indexed: 06/08/2023]
Abstract
The use of DDT (1,1,1-trichloro-2,2-bis(p-chlorophenyl) ethane) in some countries, although regulated, is contributing to an increased worldwide risk of exposure to this organochlorine pesticide or its derivative p,p'-DDE [1,1-dichloro-2,2-bis(p-chlorophenyl) ethylene]. Many studies have associated p,p'-DDE exposure to type 2 diabetes, obesity and alterations of the reproductive system, but their molecular mechanisms of toxicity remain poorly understood. We have addressed this issue by using commercial microarrays based on probes for the entire Mus musculus genome to determine the hepatic transcriptional signatures of p,p'-DDE in the phylogenetically close mouse species Mus spretus. High-stringency hybridization conditions and analysis assured reliable results, which were also verified, in part, by qRT-PCR, immunoblotting and/or enzymatic activity. Our data linked 198 deregulated genes to mitochondrial dysfunction and perturbations of central signaling pathways (kinases, lipids, and retinoic acid) leading to enhanced lipogenesis and aerobic glycolysis, inflammation, cell proliferation and testosterone catabolism and excretion. Alterations of transcript levels of genes encoding enzymes involved in testosterone catabolism and excretion would explain the relationships established between p,p´-DDE exposure and reproductive disorders, obesity and diabetes. Further studies will help to fully understand the molecular basis of p,p´-DDE molecular toxicity in liver and reproductive organs, to identify effective exposure biomarkers and perhaps to design efficient p,p'-DDE exposure counteractive strategies.
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Affiliation(s)
- Noelia Morales-Prieto
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Campus de Rabanales, Edificio Severo Ochoa, E-14071, Córdoba, Spain
| | - Julia Ruiz-Laguna
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Campus de Rabanales, Edificio Severo Ochoa, E-14071, Córdoba, Spain
| | - David Sheehan
- College of Arts and Science, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates
| | - Nieves Abril
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Campus de Rabanales, Edificio Severo Ochoa, E-14071, Córdoba, Spain.
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19
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Cuco AP, Santos JI, Abrantes N, Gonçalves F, Wolinska J, Castro BB. Concentration and timing of application reveal strong fungistatic effect of tebuconazole in a Daphnia-microparasitic yeast model. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2017; 191:141-163. [PMID: 29096087 DOI: 10.1016/j.aquatox.2017.08.005] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 07/26/2017] [Accepted: 08/07/2017] [Indexed: 05/13/2023]
Abstract
Given the importance of pollutant effects on host-parasite relationships and disease spread, the main goal of this study was to assess the influence of different exposure scenarios for the fungicide tebuconazole (concentration×timing of application) on a Daphnia-microparasitic yeast experimental system. Previous results had demonstrated that tebuconazole is able to suppress Metschnikowia bicuspidata infection at ecologically-relevant concentrations; here, we aimed to obtain an understanding of the mechanism underlying the anti-parasitic (fungicidal or fungistatic) action of tebuconazole. We exposed the Daphnia-yeast system to four nominal tebuconazole concentrations at four timings of application (according to the predicted stage of parasite development), replicated on two Daphnia genotypes, in a fully crossed experiment. An "all-or-nothing" effect was observed, with tebuconazole completely suppressing infection from 13.5μgl-1 upwards, independent of the timing of tebuconazole application. A follow-up experiment confirmed that the suppression of infection occurred within a narrow range of tebuconazole concentrations (3.65-13.5μgl-1), although a later application of the fungicide had to be compensated for by a slight increase in concentration to elicit the same anti-parasitic effect. The mechanism behind this anti-parasitic effect seems to be the inhibition of M. bicuspidata sporulation, since tebuconazole was effective in preventing ascospore production even when applied at a later time. However, this fungicide also seemed to affect the vegetative growth of the yeast, as demonstrated by the enhanced negative effect of the parasite (increasing mortality in one of the host genotypes) at a later time of application of tebuconazole, when no signs of infection were observed. Fungicide contamination can thus affect the severity and spread of disease in natural populations, as well as the inherent co-evolutionary dynamics in host-parasite systems.
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Affiliation(s)
- Ana P Cuco
- Department of Biology, University of Aveiro, Aveiro, Portugal; CESAM, University of Aveiro, Aveiro, Portugal.
| | - Joana I Santos
- Department of Biology, University of Aveiro, Aveiro, Portugal; CESAM, University of Aveiro, Aveiro, Portugal
| | - Nelson Abrantes
- CESAM, University of Aveiro, Aveiro, Portugal; Department of Environment and Planning, University of Aveiro, Aveiro, Portugal
| | - Fernando Gonçalves
- Department of Biology, University of Aveiro, Aveiro, Portugal; CESAM, University of Aveiro, Aveiro, Portugal
| | - Justyna Wolinska
- Department of Ecosystem Research, Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany; Department of Biology, Chemistry, Pharmacy, Institute of Biology, Freie Universität Berlin, Berlin, Germany
| | - Bruno B Castro
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Braga, Portugal
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20
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Olsvik PA, Søfteland L. Metabolic effects of p,p′-DDE on Atlantic salmon hepatocytes. J Appl Toxicol 2017; 38:489-503. [DOI: 10.1002/jat.3556] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 09/28/2017] [Accepted: 09/29/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Pål A. Olsvik
- National Institute of Nutrition and Seafood Research (NIFES), Bergen; Norway
- Faculty of Biosciences and Aquaculture; Nord University; Bodø Norway
| | - Liv Søfteland
- National Institute of Nutrition and Seafood Research (NIFES), Bergen; Norway
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21
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Ríos JM, Lana NB, Ciocco NF, Covaci A, Barrera-Oro E, Moreira E, Altamirano JC. Implications of biological factors on accumulation of persistent organic pollutants in Antarctic notothenioid fish. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 145:630-639. [PMID: 28806565 DOI: 10.1016/j.ecoenv.2017.08.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 07/31/2017] [Accepted: 08/02/2017] [Indexed: 06/07/2023]
Abstract
In the present study, the possible associations between selected persistent organic pollutants (POPs) and biological factors were assessed in different tissues of two Antarctic notothenioid fish: Notothenia rossii (NOR) and Trematomus newnesi (TRN) collected at Potter Cove, King George Island/Isla 25 de Mayo, South Shetland Islands. Specifically, association patterns between biological factors (body size, lipid content, body condition) and POP concentrations (polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane (DDT) and metabolites, polybrominated diphenyl ethers (PBDEs), and hexachlorocyclohexane (HCH), hexachlorobenzene (HCB), chlordanes (CHLs) and methoxylated polybrominated diphenyl ethers (MeO-PBDEs)), were explored by using two approaches: multivariate analyses (principal component analysis: PCA) and intraspecific correlations. Integrating results suggest that biological factors such as size, KI and tissue type seemed to be associated to selective accumulation of POPs for immature specimens of N. rossii, and KI and tissue type for mature specimens of T. newnesi. Each particular factor should be considered when choosing N. rossii or T. newnesi as sentinels for POPs pollution in Antarctic marine environments. Further, both nototheniids showed a selective accumulation pattern in their gonads of penta-chlorinated biphenyls (penta-CBs; 55.5 and 29ngg-1 lw for N. rossii and T. newnesi, respectively) and organochlorine pesticides such as DDTs (199 and 13.3ngg-1 lw, for N. rossii and T. newnesi respectively), and of polybrominated diphenyl ethers (PBDEs) in gills (97.2 and 22.1 for ngg-1 lw, for N. rossii and T. newnesi, respectively), highlighting the importance of these tissues in monitoring studies of pollution in fish. The current study expands the knowledge concerning the biological factors to be investigated when specific pollutants are monitored and supports the importance of tissue type for the selective accumulation of POPs in Antarctic fish. Additionally, a contribution to the scarce data on concentration of MeO-PBDEs in Antarctic marine organisms, particularly in the highly diverse perciform suborder Notothenioidei is provided.
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Affiliation(s)
- J M Ríos
- Laboratorio de Química Ambiental, Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA, CCT-CONICET), Mendoza 5500, Argentina.
| | - N B Lana
- Laboratorio de Química Ambiental, Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA, CCT-CONICET), Mendoza 5500, Argentina; Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Mendoza, Argentina.
| | - N F Ciocco
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Mendoza, Argentina; Instituto Argentino de Investigaciones de las Zonas Áridas (IADIZA,CCT- CONICET), Mendoza 5500, Argentina.
| | - A Covaci
- Toxicological Center, Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium.
| | - E Barrera-Oro
- Museo Argentino de Ciencias Naturales Bernardino Rivadavia and CONICET, Buenos Aires, Argentina; Instituto Antártico Argentino (IAA), Buenos Aires, Argentina.
| | - E Moreira
- Instituto Antártico Argentino (IAA), Buenos Aires, Argentina.
| | - J C Altamirano
- Laboratorio de Química Ambiental, Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA, CCT-CONICET), Mendoza 5500, Argentina; Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Mendoza, Argentina.
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22
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Grech A, Brochot C, Dorne JL, Quignot N, Bois FY, Beaudouin R. Toxicokinetic models and related tools in environmental risk assessment of chemicals. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 578:1-15. [PMID: 27842969 DOI: 10.1016/j.scitotenv.2016.10.146] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 10/18/2016] [Accepted: 10/19/2016] [Indexed: 05/21/2023]
Abstract
Environmental risk assessment of chemicals for the protection of ecosystems integrity is a key regulatory and scientific research field which is undergoing constant development in modelling approaches and harmonisation with human risk assessment. This review focuses on state-of-the-art toxicokinetic tools and models that have been applied to terrestrial and aquatic species relevant to environmental risk assessment of chemicals. Both empirical and mechanistic toxicokinetic models are discussed using the results of extensive literature searches together with tools and software for their calibration and an overview of applications in environmental risk assessment. These include simple tools such as one-compartment models, multi-compartment models to physiologically-based toxicokinetic (PBTK) models, mostly available for aquatic species such as fish species and a number of chemical classes including plant protection products, metals, persistent organic pollutants, nanoparticles. Data gaps and further research needs are highlighted.
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Affiliation(s)
- Audrey Grech
- Institut National de l'Environnement Industriel et des Risques (INERIS), Unité Modèles pour l'Ecotoxicologie et la Toxicologie (METO), Parc ALATA BP2, 60550 Verneuil en Halatte, France; LASER, Strategy and Decision Analytics, 10 place de Catalogne, 75014 Paris, France
| | - Céline Brochot
- Institut National de l'Environnement Industriel et des Risques (INERIS), Unité Modèles pour l'Ecotoxicologie et la Toxicologie (METO), Parc ALATA BP2, 60550 Verneuil en Halatte, France
| | - Jean-Lou Dorne
- European Food Safety Authority, Scientific Committee and Emerging Risks Unit, Via Carlo Magno 1A, 43126 Parma, Italy
| | - Nadia Quignot
- LASER, Strategy and Decision Analytics, 10 place de Catalogne, 75014 Paris, France
| | - Frédéric Y Bois
- Institut National de l'Environnement Industriel et des Risques (INERIS), Unité Modèles pour l'Ecotoxicologie et la Toxicologie (METO), Parc ALATA BP2, 60550 Verneuil en Halatte, France
| | - Rémy Beaudouin
- Institut National de l'Environnement Industriel et des Risques (INERIS), Unité Modèles pour l'Ecotoxicologie et la Toxicologie (METO), Parc ALATA BP2, 60550 Verneuil en Halatte, France.
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Noyes PD, Garcia GR, Tanguay RL. ZEBRAFISH AS AN IN VIVO MODEL FOR SUSTAINABLE CHEMICAL DESIGN. GREEN CHEMISTRY : AN INTERNATIONAL JOURNAL AND GREEN CHEMISTRY RESOURCE : GC 2016; 18:6410-6430. [PMID: 28461781 PMCID: PMC5408959 DOI: 10.1039/c6gc02061e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Heightened public awareness about the many thousands of chemicals in use and present as persistent contaminants in the environment has increased the demand for safer chemicals and more rigorous toxicity testing. There is a growing recognition that the use of traditional test models and empirical approaches is impractical for screening for toxicity the many thousands of chemicals in the environment and the hundreds of new chemistries introduced each year. These realities coupled with the green chemistry movement have prompted efforts to implement more predictive-based approaches to evaluate chemical toxicity early in product development. While used for many years in environmental toxicology and biomedicine, zebrafish use has accelerated more recently in genetic toxicology, high throughput screening (HTS), and behavioral testing. This review describes major advances in these testing methods that have positioned the zebrafish as a highly applicable model in chemical safety evaluations and sustainable chemistry efforts. Many toxic responses have been shown to be shared among fish and mammals owing to their generally well-conserved development, cellular networks, and organ systems. These shared responses have been observed for chemicals that impair endocrine functioning, development, and reproduction, as well as those that elicit cardiotoxicity and carcinogenicity, among other diseases. HTS technologies with zebrafish enable screening large chemical libraries for bioactivity that provide opportunities for testing early in product development. A compelling attribute of the zebrafish centers on being able to characterize toxicity mechanisms across multiple levels of biological organization from the genome to receptor interactions and cellular processes leading to phenotypic changes such as developmental malformations. Finally, there is a growing recognition of the links between human and wildlife health and the need for approaches that allow for assessment of real world multi-chemical exposures. The zebrafish is poised to be an important model in bridging these two conventionally separate areas of toxicology and characterizing the biological effects of chemical mixtures that could augment its role in sustainable chemistry.
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Affiliation(s)
- Pamela D. Noyes
- Department of Environmental & Molecular Toxicology, Oregon State University, Corvallis, OR 97331
| | - Gloria R. Garcia
- Department of Environmental & Molecular Toxicology, Oregon State University, Corvallis, OR 97331
| | - Robert L. Tanguay
- Department of Environmental & Molecular Toxicology, Oregon State University, Corvallis, OR 97331
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24
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Krieg SA, Shahine LK, Lathi RB. Environmental exposure to endocrine-disrupting chemicals and miscarriage. Fertil Steril 2016; 106:941-7. [DOI: 10.1016/j.fertnstert.2016.06.043] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 06/29/2016] [Accepted: 06/29/2016] [Indexed: 11/24/2022]
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25
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Dang Z. Interpretation of fish biomarker data for identification, classification, risk assessment and testing of endocrine disrupting chemicals. ENVIRONMENT INTERNATIONAL 2016; 92-93:422-441. [PMID: 27155823 DOI: 10.1016/j.envint.2016.04.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 04/03/2016] [Accepted: 04/03/2016] [Indexed: 06/05/2023]
Abstract
Chemical induced changes in fish biomarkers vitellogenin (VTG), secondary sex characteristics (SSC), and sex ratio indicate modes/mechanisms of action (MOAs) of EAS (estrogen, androgen and steroidogenesis) pathways. These biomarkers could be used for defining MOAs and the causal link between MOAs and adverse effects in fish for the identification of endocrine disrupting chemicals (EDCs). This paper compiled data sets of 150 chemicals for VTG, 57 chemicals for SSC and 38 chemicals for sex ratio in fathead minnow, medaka and zebrafish. It showed 1) changes in fish biomarkers can indicate the MOAs as anticipated; 2) in addition to EAS pathways, chemicals with non-EAS pathways induced changes in fish biomarkers; 3) responses of fish biomarkers did not always follow the anticipated patterns of EAS pathways. These responses may result from the interaction of chemical-induced multiple MOAs and confounding factors like fish diet, infection, culture conditions, general toxicity and stress response. The complex response of fish biomarkers to a chemical of interest requires EDC testing at multiple biological levels. Interpretation of fish biomarker data should be combined with relevant information at different biological levels, which is critical for defining chemical specific MOAs. The utility of fish biomarker data for identification, classification, PBT assessment, risk assessment, and testing of EDCs in the regulatory context was discussed. This paper emphasizes the importance of fish biomarker data in the regulatory context, a weight of evidence approach for the interpretation of fish biomarker data and the need for defining levels of evidence for the identification of EDCs.
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Affiliation(s)
- ZhiChao Dang
- National Institute for Public Health and the Environment (RIVM), A. van Leeuwenhoeklaan 9, Bilthoven, The Netherlands.
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26
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Zhang W, Sheng N, Wang M, Zhang H, Dai J. Zebrafish reproductive toxicity induced by chronic perfluorononanoate exposure. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2016; 175:269-76. [PMID: 27082981 DOI: 10.1016/j.aquatox.2016.04.005] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 04/04/2016] [Accepted: 04/04/2016] [Indexed: 05/27/2023]
Abstract
Perfluoroalkyl acids (PFAAs) are a group of anthropogenic compounds that have been widely used in consumer products for over 50 years. One of the most dominant PFAAs is perfluorononanoate (PFNA), a compound detected ubiquitously in aquatic ecosystems. While PFNA is suspected of being an endocrine disruptor, the mechanisms behind PFNA-induced reproductive disorders are poorly understood. The aim of this study was to investigate the reproduction-related effects and possible mechanisms of PFNA on adult zebrafish (Danio rerio) following 180 days of exposure at different concentrations (0.01, 0.1, 1mg/L). PFNA concentration in the gonads of zebrafish was tested by HPLC-MS/MS after chronic exposure to study possible inconsistent accumulation between the genders. The results showed that the accumulation of PFNA in the male gonads was almost one-fold higher than that in the female gonads, indicating a possible higher PFAA gonad burden for male zebrafish. Significant reductions in the male gonadosomatic index (GSI) and female egg production were observed. In addition, the decreased 72h hatching rate displayed an evident dosage effect, indicating that maternal exposure to PFNA might impair offspring developmental success. To investigate how PFNA exposure affects the hypothalamic-pituitary-gonadal-liver axis (HPGL axis), the transcriptional levels of genes were measured by real-time PCR. The disrupted expression of genes, such as ERα, ERβ, FSHR, LHR, StAR, and 17βHSD, indicated the possible interference of PFNA on the HPGL axis function and sex hormone synthesis. Furthermore, testosterone (T) and estradiol (E2) levels in serum and VTG content in the liver were detected to clarify the influences of PFNA on sex hormone levels. Except for the increase in serum estrogen levels, as an estrogen analogue, PFNA also induced the synthesis of biomarker protein vitellogenin (VTG) in the adult male liver. The results of this study indicate that chronic exposure to PFNA can lead to dysfunction in the HPGL axis and sex hormone synthesis and cause adverse effects on fish reproduction.
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Affiliation(s)
- Wei Zhang
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Nan Sheng
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Minhui Wang
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Hongxia Zhang
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Jiayin Dai
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China.
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27
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Pimentel MF, Damasceno ÉP, Jimenez PC, Araújo PFR, Bezerra MF, de Morais PCV, Cavalcante RM, Loureiro S, Lotufo LVC. Endocrine disruption in Sphoeroides testudineus tissues and sediments highlights contamination in a northeastern Brazilian estuary. ENVIRONMENTAL MONITORING AND ASSESSMENT 2016; 188:298. [PMID: 27094055 DOI: 10.1007/s10661-016-5300-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 04/12/2016] [Indexed: 06/05/2023]
Abstract
In recent decades, considerable attention has been devoted to endocrine disruptor chemicals (EDC) and studies on fish feminization have increased throughout the years as a key signal for aquatic environmental contamination. The input of domestic sewage into water reservoirs is common in South American countries, especially in cities that experienced rapid population growths and unplanned urbanization. This study aimed at characterizing morphofunctional parameters of the tropical fish Sphoeroides testudineus and investigating the potential occurrence and effects of endocrine disruptors in the Pacoti River (Ceará, Brazil), often considered a reference site. After collection from the field, fish were measure/weighted and desiccated for gender identification (males, females, and undifferentiated), gonadal histology, and vitellogenin expression. From the biometric analysis, undifferentiated fish showed lower weight and length than female and male fish, although no differences in the condition index were observed. The gonadal weight of undifferentiated fish was significantly lower than those of females and males. Although this pattern was observed, gonadosomatic index (GSI) showed a different pattern, with differences being observed just between males and the other two groups (females and undifferentiated). Vitellogenin (VTG) expression was detected in many mature male and undifferentiated fish, indicating endocrine disruption. In addition, several EDCs (estrone, 17α-estradiol, 17β-estradiol, 17α-ethinylestradiol, diethylstilbestrol, and estriol) were identified and quantified in sediments from the sampling site. These results were unexpected and indicative that the Pacoti River is impaired by estrogenic contamination.
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Affiliation(s)
- Marcionília Fernandes Pimentel
- Laboratório de Ecotoxicologia Marinha, Instituto de Ciências do Mar (Labomar), Universidade Federal do Ceará, Av. Abolição 3207, Fortaleza, Ceará, 60125-120, Brazil.
| | - Évila Pinheiro Damasceno
- Laboratório de Ecotoxicologia Marinha, Instituto de Ciências do Mar (Labomar), Universidade Federal do Ceará, Av. Abolição 3207, Fortaleza, Ceará, 60125-120, Brazil
| | - Paula Christine Jimenez
- Departamento de Ciências do Mar, Universidade Federal de São Paulo, Av. Almirante Saldanha da Gama, 89, Santos, São Paulo, 11030-180, Brazil
| | - Pedro Filipe Ribeiro Araújo
- Centro de diagnóstico de enfermidades de organismos aquáticos - CEDECAM, Instituto de Ciências do Mar (Labomar), Universidade Federal do Ceará, Av. Abolição 3207, Fortaleza, Ceará, 60125-120, Brazil
| | - Marcielly Freitas Bezerra
- Laboratório de Avaliação de Contaminantes Orgânicos - LACOr, Instituto de Ciências do Mar (Labomar), Universidade Federal do Ceará, Av. Abolição 3207, Fortaleza, Ceará, 60125-120, Brazil
| | - Pollyana Cristina Vasconcelos de Morais
- Laboratório de Avaliação de Contaminantes Orgânicos - LACOr, Instituto de Ciências do Mar (Labomar), Universidade Federal do Ceará, Av. Abolição 3207, Fortaleza, Ceará, 60125-120, Brazil
| | - Rivelino Martins Cavalcante
- Laboratório de Avaliação de Contaminantes Orgânicos - LACOr, Instituto de Ciências do Mar (Labomar), Universidade Federal do Ceará, Av. Abolição 3207, Fortaleza, Ceará, 60125-120, Brazil
| | - Susana Loureiro
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193, Aveiro, Portugal
| | - Letícia Veras Costa Lotufo
- Laboratório de Ecotoxicologia Marinha, Instituto de Ciências do Mar (Labomar), Universidade Federal do Ceará, Av. Abolição 3207, Fortaleza, Ceará, 60125-120, Brazil
- Instituto de Ciências Biomédicas, Universidade de São Paulo, Av. Lineu Prestes 1524, Predio Biomedicas I, sala 213, Cidade Universitaria, São Paulo, São Paulo, 05508-900, Brazil
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28
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Sun J, Wang C, Peng H, Zheng G, Zhang S, Hu J. p,p'-DDE Induces Gonadal Intersex in Japanese Medaka (Oryzias latipes) at Environmentally Relevant Concentrations: Comparison with o,p'-DDT. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:462-469. [PMID: 26606134 DOI: 10.1021/acs.est.5b05042] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Previous studies have reported high body burdens of dichlorodiphenyltrichloroethane (DDT) and its metabolites in wild fishes worldwide. This study evaluated the adverse effects of 1,1-dichloro-2,2-bis (p-chlorophenyl)-ethylene (p,p'-DDE) and o,p'-DDT on gonadal development and reproduction by exposing transgenic Japanese medaka (Oryzias latipes) from hatch for 100 days. While both p,p'-DDE and o,p'-DDT induced intersex in male medaka, the lowest observable effective concentration (LOEC) of o,p'-DDT was 57.7 ng/g ww, about 5-fold lower than that (272 ng/g ww) of p,p'-DDE. Since LOECs of both chemicals were comparable to the body concentrations in wild fish, DDT contamination would likely contribute to the occurrence of intersex observed in wild fish. Exposure to o,p'-DDT resulted in much higher expression of vitellogenin in liver of males than p,p'-DDE, accordant with the higher potency of o,p'-DDT than p,p'-DDE to induce intersex. This phenomenon could be partly explained by the significantly elevated levels of 17β-estradiol in plasma of males exposed to o,p'-DDT, in addition to its estrogenic activity via the estrogen receptor. Significantly lower fertilization (p = 0.006) and hatchability (p = 0.019) were observed in the 13 intersex males. This study for the first time demonstrated the induction of intersex and reproductive effects of p,p'-DDE and o,p'-DDT at environmentally relevant concentrations.
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Affiliation(s)
- Jianxian Sun
- MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University , Beijing 100871, People's Republic of China
| | - Chen Wang
- MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University , Beijing 100871, People's Republic of China
| | - Hui Peng
- MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University , Beijing 100871, People's Republic of China
| | - Guomao Zheng
- MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University , Beijing 100871, People's Republic of China
| | - Shiyi Zhang
- MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University , Beijing 100871, People's Republic of China
| | - Jianying Hu
- MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University , Beijing 100871, People's Republic of China
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