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Meador JP, Ball SC, James CA, McIntyre JK. Using the fish plasma model to evaluate potential effects of pharmaceuticals in effluent from a large urban wastewater treatment plant. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 348:123842. [PMID: 38554836 DOI: 10.1016/j.envpol.2024.123842] [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: 01/17/2024] [Revised: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 04/02/2024]
Abstract
Several pharmaceuticals and personal care products (PPCPs) were evaluated using the fish plasma model (FPM) for juvenile Chinook salmon exposed to effluent from a large urban wastewater treatment plant. The FPM compares fish plasma concentrations to therapeutic values determined in human plasma as an indication of potential adverse effects. We used human Cmax values, which are the maximum plasma concentration for a minimum therapeutic dose. Observed and predicted plasma concentrations from juvenile Chinook salmon exposed to a dilution series of whole wastewater effluent were compared to 1%Cmax values to determine Response Ratios (RR) ([plasma]/1%Cmax) for assessment of possible adverse effects. Several PPCPs were found to approach or exceed an RR of 1, indicating potential effects in fish. We also predicted plasma concentrations from measured water concentrations and determined that several of the values were close to or below the analytical reporting limit (RL) indicating potential plasma concentrations for a large number of PPCPs that were below detection. Additionally, the 1%Cmax was less than the RL for several analytes, which could impede predictions of possible effect concentrations. A comparison of observed and predicted plasma concentrations found that observed values were frequently much higher than values predicted with water concentrations, especially for low log10Dow compounds. The observed versus predicted values using the human volume of distribution (Vd), were generally much closer in agreement. These data appear to support the selection of whole-body concentrations to predict plasma values, which relies more on estimating simple partitioning within the fish instead of uptake via water. Overall, these observations highlight the frequently underestimated predicted plasma concentrations and potential to cause adverse effects in fish. Using measured plasma concentrations or predicted values from whole-body concentrations along with improved prediction models and reductions in analytical detection limits will foster more accurate risk assessments of pharmaceutical exposure for fish.
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Affiliation(s)
- James P Meador
- University of Washington, Dept. of Environmental and Occupational Health Sciences, School of Public Health, 4225 Roosevelt Way NE, Suite 100, Seattle, WA, 98105-6099, USA.
| | - Suzanne C Ball
- Washington State University, School of the Environment, Puyallup Research and Extension Center, 2606 W Pioneer Ave, Puyallup, WA, 98371, USA.
| | - C Andrew James
- University of Washington Tacoma, Center for Urban Waters, 326 East D Street, Tacoma, WA, 98421-1801, USA.
| | - Jenifer K McIntyre
- Washington State University, School of the Environment, Puyallup Research and Extension Center, 2606 W Pioneer Ave, Puyallup, WA, 98371, USA.
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Dey S. Exploring the Impact of Naphthalene (Polycyclic Aromatic Hydrocarbons) on Anabas testudineus (Bloch) through Dose-Specific Bioenzymological Analysis. ACS OMEGA 2024; 9:14923-14931. [PMID: 38585137 PMCID: PMC10993261 DOI: 10.1021/acsomega.3c08535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 02/22/2024] [Accepted: 03/11/2024] [Indexed: 04/09/2024]
Abstract
This study addresses the increasing concern about naphthalene, a polycyclic aromatic hydrocarbon (PAH), highlighting its growing threats to the environment and aquatic life. The research examines its impact on Anabas testudineus (Bloch) through a detailed dose-specific bioenzymological analysis. Experimental fish groups were exposed to T1 (0.71 mg/L) and T2 (1.42 mg/L) naphthalene concentrations, representing 25 and 50% of the LC50 value, respectively, over a 1-21 day period. Following the experiment, water samples underwent physicochemical analysis, while fish tissues were examined for diverse bioenzymological parameters. Among these parameters, aspirate aminotransferase (AST) and alanine aminotransferase (ALT) serve as crucial indicators for monitoring the physiological status of fish and addressing pollution induced by PAHs, especially naphthalene. Statistical significance was observed in morpho-pathological changes and erythrocyte alterations, particularly the presence of tear-drop appearance (Tr) positively interacting with swelled cells (Sc), vacuolated cells (Va), and sickle cells (Sk) (P < 0.05). These findings highlight tear-drop appearance (Tr) as a significant biomarker in response to naphthalene exposure. The observed changes in A. testudineus tissue bioenzymology, apoptosis, and erythrocytic alterations were exposure and dose-dependent. The research highlights the significance of overseeing and controlling PAH concentrations in aquatic ecosystems to ensure the well-being of A. testudineus (Bloch).
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Affiliation(s)
- Sukhendu Dey
- The University of Burdwan, Burdwan, West Bengal 713104, India
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Ferreira CSS, Venâncio C, Almeida M, Lopes I, Kille P, Oliveira M. Sub-chronic exposure to paroxetine disrupts ecologically relevant behaviours in fish. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 917:170405. [PMID: 38280602 DOI: 10.1016/j.scitotenv.2024.170405] [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: 09/27/2023] [Revised: 01/08/2024] [Accepted: 01/22/2024] [Indexed: 01/29/2024]
Abstract
The functional conservation of important selective serotonin reuptake inhibitor (SSRI) targets in non-target organisms raises concerns about their potential adverse effects on the ecosystems. Although the environmental levels of SSRIs like paroxetine (PAR) have risen, the knowledge regarding the effects of long-term exposure to PAR is limited. This study investigated the impact of sub-chronic exposure (21 days) to two sub-lethal concentrations of PAR (40 and 400 μg/L) on the behaviour of adult zebrafish in different scenarios: basal activity (under dark and light conditions), stress response (evoked by sudden light transitions) and stress response recovery. A new framework was employed for the integrative study of fish's swimming performance based on their innate ability to respond to light shifts. Several swimming-associated parameters (e.g., total swimming distance, time of inactivity, swimming angles) and thigmotaxis were monitored for an integrated analysis in each scenario. Data revealed reduced swimming activity, impaired behavioural response to stress and alterations in stress recovery of PAR-exposed fish. An anxiolytic effect was particularly noticeable in fish basal swimming activity in the dark at 400 μg/L and in the behavioural response to stress (from dark to light) and stress recovery (from light to dark) for organisms exposed to 40 μg/L. The detected PAR-induced behavioural modifications suggest a disruption of brain glucocorticoid signalling that may have implications at the individual level (e.g., changing behavioural responses to predators), with potential repercussions on the population and community levels. Therefore, the applied protocol proved sensitive in detecting behavioural changes induced by PAR.
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Affiliation(s)
- Carla S S Ferreira
- Centre for Marine and Environmental Studies (CESAM), Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Cátia Venâncio
- Centre for Marine and Environmental Studies (CESAM), Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Mónica Almeida
- Centre for Marine and Environmental Studies (CESAM), Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Isabel Lopes
- Centre for Marine and Environmental Studies (CESAM), Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Peter Kille
- School of Biosciences, Cardiff University, Cardiff CF10 3AX, UK
| | - Miguel Oliveira
- Centre for Marine and Environmental Studies (CESAM), Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
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Tea M, Pan YK, Lister JGR, Perry SF, Gilmour KM. Effects of serta and sertb knockout on aggression in zebrafish (Danio rerio). J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2024:10.1007/s00359-024-01693-7. [PMID: 38416162 DOI: 10.1007/s00359-024-01693-7] [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: 12/02/2023] [Revised: 01/12/2024] [Accepted: 02/01/2024] [Indexed: 02/29/2024]
Abstract
Zebrafish (Danio rerio) are unusual in having two paralogues of the serotonin re-uptake transporter (Sert), slc6a4a (serta) and slc6a4b (sertb), the transporter that serves in serotonin re-uptake from a synapse into the pre-synaptic cell or in serotonin uptake from the extracellular milieu into cells in the peripheral tissues. To address a knowledge gap concerning the specific roles of these paralogues, we used CRISPR/Cas9 technology to generate zebrafish knockout lines predicted to lack functional expression of Serta or Sertb. The consequences of loss-of-function of Serta or Sertb were assessed at the gene expression level, focusing on the serotonergic signalling pathway, and at the behaviour level, focusing on aggression. Whereas serta mRNA was expressed in all tissues examined, with high expression in the heart, gill and brain, only the brain displayed substantial sertb mRNA expression. In both serta-/- and sertb-/- fish, changes in transcript abundances of multiple components of the serotonin signalling pathway were detected, including proteins involved in serotonin synthesis (tph1a, tph1b, tph2, ddc), packaging (vmat2) and degradation (mao), and serotonin receptors (htr1aa, htr1ab). Using a mirror aggression test, serta-/- male but not female fish exhibited greater aggression than wildtype fish. However, both male and female sertb-/- fish displayed less aggression than their wildtype counterparts. These differences in behaviour between serta-/- and sertb-/- individuals hold promise for increasing our understanding of the neurophysiological basis of aggression in zebrafish.
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Affiliation(s)
- Michael Tea
- Department of Biology, University of Ottawa, 30 Marie Curie Pvt, Ottawa, ON, K1N 6N5, Canada
| | - Yihang Kevin Pan
- Department of Biology, University of Ottawa, 30 Marie Curie Pvt, Ottawa, ON, K1N 6N5, Canada
| | - Joshua G R Lister
- Department of Biology, University of Ottawa, 30 Marie Curie Pvt, Ottawa, ON, K1N 6N5, Canada
| | - Steve F Perry
- Department of Biology, University of Ottawa, 30 Marie Curie Pvt, Ottawa, ON, K1N 6N5, Canada
| | - Kathleen M Gilmour
- Department of Biology, University of Ottawa, 30 Marie Curie Pvt, Ottawa, ON, K1N 6N5, Canada.
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Ferreira CSS, Venâncio C, Kille P, Oliveira M. Are early and young life stages of fish affected by paroxetine? A case study with Danio rerio. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 900:165706. [PMID: 37499832 DOI: 10.1016/j.scitotenv.2023.165706] [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: 05/20/2023] [Revised: 07/08/2023] [Accepted: 07/20/2023] [Indexed: 07/29/2023]
Abstract
Paroxetine (PAR) is a selective serotonin reuptake inhibitor (SSRI) antidepressant increasingly detected in surface waters worldwide. Its environmental presence raises concerns about the potential detrimental effects on non-target organisms. Thus, this study aimed to increase knowledge on PAR's potential environmental impacts, assessing the effects of commercial formulation (PAR-c) and active ingredient (PAR-a) on fish. Therefore, the short-term exposure effects of PAR-c and PAR-a were assessed on zebrafish (Danio rerio) embryos/larvae to determine the most toxic formulation [through median lethal (LC50) and effective concentrations (EC50)]. PAR-c and PAR-a induced morphological abnormalities (scoliosis) in a dose-dependent manner from 96 hours post-fertilization onwards, suggesting the involvement of a fully functional biotransformation system. As PAR-c exhibited higher toxicity, it was selected to be tested in the subsequent stage (juvenile stage), which was more sensitive (lower LC50). PAR-c significantly decreased fish swimming activity and disrupted fish stress response. Overall, the results highlight the ability of PAR-c to adversely affect fish swimming performance, an effect that persisted even after exposure ceases (21-day depuration), suggesting that PAR-c may impair individual fitness.
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Affiliation(s)
- Carla S S Ferreira
- Centre for Marine and Environmental Studies (CESAM), Department of Biology, University of Aveiro, 3810-193, Aveiro, Portugal.
| | - Cátia Venâncio
- Centre for Marine and Environmental Studies (CESAM), Department of Biology, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Peter Kille
- School of Biosciences, Cardiff University, Cardiff, CF10 3AX, UK
| | - Miguel Oliveira
- Centre for Marine and Environmental Studies (CESAM), Department of Biology, University of Aveiro, 3810-193, Aveiro, Portugal
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Polverino G, Aich U, Brand JA, Bertram MG, Martin JM, Tan H, Soman VR, Mason RT, Wong BBM. Sex-specific effects of psychoactive pollution on behavioral individuality and plasticity in fish. Behav Ecol 2023; 34:969-978. [PMID: 37969553 PMCID: PMC10636733 DOI: 10.1093/beheco/arad065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 07/17/2023] [Accepted: 07/31/2023] [Indexed: 11/17/2023] Open
Abstract
The global rise of pharmaceutical contaminants in the aquatic environment poses a serious threat to ecological and evolutionary processes. Studies have traditionally focused on the collateral (average) effects of psychoactive pollutants on ecologically relevant behaviors of wildlife, often neglecting effects among and within individuals, and whether they differ between males and females. We tested whether psychoactive pollutants have sex-specific effects on behavioral individuality and plasticity in guppies (Poecilia reticulata), a freshwater species that inhabits contaminated waterways in the wild. Fish were exposed to fluoxetine (Prozac) for 2 years across multiple generations before their activity and stress-related behavior were repeatedly assayed. Using a Bayesian statistical approach that partitions the effects among and within individuals, we found that males-but not females-in fluoxetine-exposed populations differed less from each other in their behavior (lower behavioral individuality) than unexposed males. In sharp contrast, effects on behavioral plasticity were observed in females-but not in males-whereby exposure to even low levels of fluoxetine resulted in a substantial decrease (activity) and increase (freezing behavior) in the behavioral plasticity of females. Our evidence reveals that psychoactive pollution has sex-specific effects on the individual behavior of fish, suggesting that males and females might not be equally vulnerable to global pollutants.
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Affiliation(s)
- Giovanni Polverino
- School of Biological Sciences, Monash University, 25 Rainforest Walk, Clayton, 3800, Victoria, Australia
- Department of Ecological and Biological Sciences, University of Tuscia, L.go dell'Università snc, Viterbo, 01100, Italy
| | - Upama Aich
- School of Biological Sciences, Monash University, 25 Rainforest Walk, Clayton, 3800, Victoria, Australia
| | - Jack A Brand
- School of Biological Sciences, Monash University, 25 Rainforest Walk, Clayton, 3800, Victoria, Australia
| | - Michael G Bertram
- Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, SE-907 36, Umeå,Sweden
| | - Jake M Martin
- Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, SE-907 36, Umeå,Sweden
- Department of Zoology, Stockholm University, Svante Arrhenius väg 18b114 18, Stockholm, Sweden
| | - Hung Tan
- School of Biological Sciences, Monash University, 25 Rainforest Walk, Clayton, 3800, Victoria, Australia
| | - Vrishin R Soman
- Department of Mechanical and Aerospace Engineering, New York University, 370 Jay Street, Brooklyn, 11201, NY, USA
| | - Rachel T Mason
- School of Biological Sciences, Monash University, 25 Rainforest Walk, Clayton, 3800, Victoria, Australia
- School of Life and Environmental Sciences, Deakin University, 221 Burwood Highway, Burwood, 3125, Victoria, Australia
| | - Bob B M Wong
- School of Biological Sciences, Monash University, 25 Rainforest Walk, Clayton, 3800, Victoria, Australia
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