Aquatic ToxicologyPub Date : 2025-01-27DOI: 10.1016/j.aquatox.2025.107259
Xiaotian Wang, Shangjie Zhou, Jianhao Dong, Zhengjia Wei, Yan Liu, Yutong Huang, Junhui Sui, Long Zhu
{"title":"The impact of bisphenol A on gill health: A focus on mitochondrial dysfunction induced disorders of energy metabolism and apoptosis in Meretrix petechialis.","authors":"Xiaotian Wang, Shangjie Zhou, Jianhao Dong, Zhengjia Wei, Yan Liu, Yutong Huang, Junhui Sui, Long Zhu","doi":"10.1016/j.aquatox.2025.107259","DOIUrl":"https://doi.org/10.1016/j.aquatox.2025.107259","url":null,"abstract":"<p><p>Bisphenol A (BPA), a well-known chemical compound used in various daily goods, has been associated with adverse effects on animal metabolic processes. However, the specific impacts of BPA exposure on clam gills remain largely unexplored. To investigate the effects of BPA on energy metabolism and apoptosis in Meretrix petechialis gills, clams were exposed to varying concentrations of BPA (1, 10, and 100 μg/L) for 21 days. Results showed that BPA exposure induced gill histopathological injuries and inhibited filtration rates. Transmission electron microscopy (TEM) analysis revealed mitochondrial injury and dysfunction as potential mechanisms of gill damage. Transcriptome analysis identified differentially expressed genes (DEGs) primarily enriched in energy metabolism and apoptosis pathways. BPA-induced changes in ATP content, ATPase, and lactate dehydrogenase (LDH) activities suggested dysregulation of energy metabolism. TUNEL staining demonstrated enhanced apoptotic signals with increasing BPA concentrations. Activation of the caspase-3/9 pathway indicated a concentration-dependent, mitochondria-dependent apoptotic process. Additionally, the expression of genes associated with mitochondria (NNT, TOMM40, and SLC25A11), energy metabolism (PCK1 and pdhC), inducing mitochondria-dependent apoptosis (NFKB1, RAC1, and TRAF2), and oxidative stress (GSTT1) was affected by BPA exposure. Integrated biomarker response version 2 (IBRv2) values further confirmed a concentration-dependent gill toxicity of BPA via the mitochondrial pathway. These findings provide a deeper understanding of the toxicological mechanisms underlying BPA-induced toxicity in bivalves and contribute to assessing the risks posed by BPA in benthic ecosystems.</p>","PeriodicalId":248,"journal":{"name":"Aquatic Toxicology","volume":"279 ","pages":"107259"},"PeriodicalIF":4.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Lithium enhanced plasmid-mediated conjugative transfer of antimicrobial resistance genes in Escherichia coli: Different concentrations and mechanisms.","authors":"Jiaxing Li, Dongzhe Sun, Jiayi Wu, Fen Liu, Yaqi Xu, Yuanhao Wang, Xiaoxi Shui, Qingyang Li, Baohua Zhao","doi":"10.1016/j.aquatox.2025.107263","DOIUrl":"https://doi.org/10.1016/j.aquatox.2025.107263","url":null,"abstract":"<p><p>Conjugative transfer, a pivotal mechanism in the transmission of antimicrobial resistance genes, is susceptible to various environmental pollutants. As an emerging contaminant, lithium (Li) has garnered much attention due to its extensive applications. This research investigated the effects of Li on conjugative transfer process, examining biochemical and omics perspectives. Results revealed that Li could increase the conjugative transfer frequency of both donor and recipient via different mechanisms at varying concentrations. At 0.1 mg/L LiCl, a notable increase in conjugative transfer frequency occurred without ROS elevation. However, the surge of ROS was identified as a crucial regulator at 100 mg/L LiCl, as eliminating ROS would significantly decrease the conjugative transfer frequency. Besides, comparative transcriptome analysis revealed consistent variations in \"SOS response\", \"quorum sensing\" and \"oxidative phosphorylation\" pathways at both 0.1 mg/L and 100 mg/L LiCl concentrations, suggesting their pivotal roles as targets for Li regulation and is independent of Li concentration. While genes related to \"conjugative transfer\", \"pili\", \"outer membrane protein\" and \"antioxidant enzyme\" were only significantly regulated by 100 mg/L LiCl, possible to be the specific reasons for High (100 mg/L) LiCl increased conjugative transfer frequency. This study reveals the distinct effects and mechanisms of different concentration of Li on conjugative transfer in E. coli, providing a theoretical basis for the understanding of the environmental effects of Li.</p>","PeriodicalId":248,"journal":{"name":"Aquatic Toxicology","volume":"279 ","pages":"107263"},"PeriodicalIF":4.1,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aquatic ToxicologyPub Date : 2025-01-25DOI: 10.1016/j.aquatox.2025.107262
Niveen Ismail, Paul Seguin, Lola Pricam, Elisabeth M.L. Janssen, Tamar Kohn, Bas W. Ibelings, Anna Carratalà
{"title":"Seasonality of cyanobacteria and eukaryotes in Lake Geneva and the impacts of cyanotoxins on growth of the model ciliate Tetrahymena pyriformis","authors":"Niveen Ismail, Paul Seguin, Lola Pricam, Elisabeth M.L. Janssen, Tamar Kohn, Bas W. Ibelings, Anna Carratalà","doi":"10.1016/j.aquatox.2025.107262","DOIUrl":"https://doi.org/10.1016/j.aquatox.2025.107262","url":null,"abstract":"Toxic cyanobacteria are likely to be favored by global warming and other human impacts, posing significant threats to aquatic ecosystems. While cyanobacterial blooms in eutrophic lakes are widely investigated, the dynamics of cyanobacteria and the effects of their toxins and bioactive metabolites on the plankton communities in mesotrophic and oligotrophic lakes are less well understood. Here we investigated seasonal dynamics of cyanobacteria, eukaryotic algae and cyanotoxins in oligo-mesotrophic Lake Geneva—the largest and deepest lake in western Europe. High-throughput sequencing of the 16S rRNA genes in 143 samples along a water column revealed that Lake Geneva hosts diverse, co-dominant cyanobacterial genera, including <ce:italic>Planktothrix, Cyanobium, Pseudanabaena</ce:italic>, and <ce:italic>Aphanizomenon.</ce:italic> The abundance of the <ce:italic>mcyA</ce:italic> gene marker for microcystin production was highly correlated with total cyanobacteria abundance, obtained from qPCR of the 16S rRNA genes. Targeted LC-HRMS/MS analysis demonstrated peak concentrations of cyanotoxins in September and December 2021 at the deep chlorophyll-a maximum layer, reaching up to 1474 ng/l for anabaenopeptins and 144 ng/l for microcystins. The toxin peaks did not correlate with the abundance or variations in the cyanobacteria or eukaryote community, but they were correlated in time with seasonal lows in the abundances of ciliates (18S rRNA analysis). Laboratory exposure tests demonstrated that growth of the model ciliate <ce:italic>Tetrahymena pyriformis</ce:italic> was inhibited by Microcystin-RR and Anabaenopeptin A at environmentally relevant concentrations in the ng/l-range, in natural lake water, synthetic freshwater, and growth media spiked with the cyanotoxins. Our findings suggest that even low concentrations (in the ng/l-range) of microcystins and anabaenopeptins, reduce growth of ciliates such as <ce:italic>T. pyriformis</ce:italic> and can be expected to have wider impacts on the eukaryote communities.","PeriodicalId":248,"journal":{"name":"Aquatic Toxicology","volume":"60 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143072596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aquatic ToxicologyPub Date : 2025-01-25DOI: 10.1016/j.aquatox.2025.107260
Alice Tâmara de Carvalho Lopes, Marcelino Benvindo-Souza, Daiany Folador Sotero, Thays Millena Alves Pedroso, Acácio Arlem Tomaz, Andreya Gonçalves Costa, Antônia Regina dos Santos Gois, Thiago Bernardi Vieira, Rogério Pereira Bastos, Daniela de Melo e Silva
{"title":"Sublethal effects of atrazine concentrations exposure on tadpoles of Dendropsophus minutus: Evaluation of redox status, micronuclei frequencies and comet assay as biomarkers","authors":"Alice Tâmara de Carvalho Lopes, Marcelino Benvindo-Souza, Daiany Folador Sotero, Thays Millena Alves Pedroso, Acácio Arlem Tomaz, Andreya Gonçalves Costa, Antônia Regina dos Santos Gois, Thiago Bernardi Vieira, Rogério Pereira Bastos, Daniela de Melo e Silva","doi":"10.1016/j.aquatox.2025.107260","DOIUrl":"https://doi.org/10.1016/j.aquatox.2025.107260","url":null,"abstract":"Atrazine (ATZ) is an herbicide that can persist in terrestrial and aquatic environments and potentially cause significant harm to amphibian health. Therefore, the Brazilian National Environment Council (CONAMA) sets the limit concentration of ATZ in waters at 2μg/L. Our study evaluated the genotoxic, mutagenic, and biochemical alterations in <ce:italic>Dendropsophus minutus</ce:italic> tadpoles in the 25 Gosner stage, to acute exposure (96h) of ATZ (T1 - 0.02µg/L, T2 - 0.04µg/L, T3 - 0.08µg/L, T4 - 2µg/L). The comet assay showed all concentrations caused DNA damage with an increase to T2, T3, and T4. In the micronucleus test (MN) and Erythrocyte Nuclear Abnormality test (ENA), T3 and T4 accumulated more anucleated (AN), binucleated cells (BC) and ENAs. Redox imbalance was not detected. Therefore, we conclude that the concentrations tested are not safe for the health and development of <ce:italic>D. minutus</ce:italic> tadpoles, and the CONAMA limit needs to be reviewed since all tadpoles presented DNA damage. More studies are necessary to identify other alterations that ATZ can cause in the tadpole health of tropical species. Therefore, implementing public policies aimed at safeguarding the lives of both adult and juvenile amphibians is imperative for the conservation of biodiversity and ecosystem stability.","PeriodicalId":248,"journal":{"name":"Aquatic Toxicology","volume":"77 6 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143072597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aquatic ToxicologyPub Date : 2025-01-23DOI: 10.1016/j.aquatox.2025.107258
Dora Bjedov, Nataša Turić, Alma Mikuška, Goran Vignjević, Lucija Sara Kovačić, Ana Marija Pavičić, Leontina Toth Jakeljić, Mirna Velki
{"title":"The diving beetle, Cybister lateralimarginalis (De Geer, 1774), as a bioindicator for subcellular changes affected by heavy metal(loid) pollution in freshwater ecosystems","authors":"Dora Bjedov, Nataša Turić, Alma Mikuška, Goran Vignjević, Lucija Sara Kovačić, Ana Marija Pavičić, Leontina Toth Jakeljić, Mirna Velki","doi":"10.1016/j.aquatox.2025.107258","DOIUrl":"https://doi.org/10.1016/j.aquatox.2025.107258","url":null,"abstract":"The present study assessed <ce:italic>Cybister lateralimarginalis</ce:italic> as a model species for ecotoxicological studies of metal(loid) bioaccumulation in freshwater ecosystems, by optimising protocols and analysing biomarker activities and metal(loid) concentrations from different sites and investigating their association. To accomplish this, levels of arsenic (As), selenium (Se), cadmium (Cd), mercury (Hg), and lead (Pb) were analysed, as well as a set of biomarkers were evaluated, esterase activity and oxidative stress biomarkers: fluorescence- and glutathione-based. <ce:italic>C. lateralimarginalis</ce:italic> were sampled in the spring/summer of 2023 along the Sava, Drava and Danube floodplains in Croatia. <ce:italic>C. lateralimarginalis</ce:italic> samples from Sava floodplain (Mužilovčica) showed altered carboxylesterase (CES) activity, lower glutathione (GSH) levels, and elevated Hg and As concentrations. The Weighted Pollution Index (WPI) indicated moderate pollution at the Sava floodplain, possibly due to agricultural or petrochemical impacts. At the Drava floodplain (Podravlje), higher glutathione S-transferase (GST) activity and elevated Cd, Hg, and As concentrations were observed, likely from soil accumulation, while Stara Drava beetles had lower GSH levels, suggesting agricultural impacts. Despite this, the Drava floodplain showed the lowest WPI. Higher GST activity was noted at the Danube floodplain (Kopački rit and Topoljski Dunavac), with reactive oxygen species (ROS) concentrations (Kopački rit and Podunavlje) possibly reflecting agricultural practices or illegal hunting. The present research successfully applied <ce:italic>C. lateralimarginalis</ce:italic> as a bioindicator species for assessing metal(loid)s in different environments, highlighting its reliability as an abundant apex predator, emphasizing the significance of integrating biomarker response evaluation into pollutant monitoring for efficient environmental risk assessment in freshwater ecosystems.","PeriodicalId":248,"journal":{"name":"Aquatic Toxicology","volume":"37 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143072598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aquatic ToxicologyPub Date : 2025-01-22DOI: 10.1016/j.aquatox.2025.107257
Xinlei Wang, Min Lv, Jin Liu, Mingtao Ba, Mingsan Man, Kun Yin, Jing Ding, Xianbo Chang, Lingxin Chen
{"title":"Size-specific mediation of the physiological responses and degradation ability of microalgae to sulfamerazine by microplastics","authors":"Xinlei Wang, Min Lv, Jin Liu, Mingtao Ba, Mingsan Man, Kun Yin, Jing Ding, Xianbo Chang, Lingxin Chen","doi":"10.1016/j.aquatox.2025.107257","DOIUrl":"https://doi.org/10.1016/j.aquatox.2025.107257","url":null,"abstract":"Antibiotics and microplastics (MPs) are two classes of emerging contaminants that are commonly found in various water environments. However, how different sized MPs affect the toxicity and biodegradation of antibiotics remains poorly understood. We investigated the effects of polystyrene (PS) MPs with different particle sizes (100 nm and 30 μm) on the physiological responses and degradation behavior of <ce:italic>Phaeodactylum tricornutum</ce:italic> to sulfamerazine (SMR). Results showed that microalgae growth was inhibited by SMR, and MPs especially those of smaller size exacerbated the inhibitory effects of SMR on microalgae, including decreasing the content of chlorophyll a, carotenoids, malondiadehyde and superoxide dismutase activity. MPs exhibited low adsorption towards SMR, and MPs especially 30 μm MPs strengthened SMR photodegradation through leaching more organic chemicals. In comparison, 100 nm MPs obstructed the light, resulting in insignificant effects on photodegradation. Apart from photodegradation, SMR could be bioaccumulated and biodegraded by microalgae, and biodegradation was the main removal mechanism. The overall influence of MPs on SMR degradation by microalgae was a balance of the promotion on photodegradation and negative effects on microalgae growth, with the degradation efficiency and rate of SMR significantly lower in treatment of 100 nm MPs (0.0128 ± 0.0012 day<ce:sup loc=\"post\">−1</ce:sup>, 30.13 ± 0.36 %) than treatments without MPs (0.0155 ± 0.0011 day<ce:sup loc=\"post\">−1</ce:sup>, 32.90 ± 3.11 %) or with 30 μm MPs (0.0165 ± 0.0013 day<ce:sup loc=\"post\">−1</ce:sup>, 34.46 ± 2.52 %). Overall, this study reveals the size-specific effects of MPs on the toxicity and degradation behavior of SMR, providing novel insights into the combined effects of SMR and MPs.","PeriodicalId":248,"journal":{"name":"Aquatic Toxicology","volume":"23 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143035193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aquatic ToxicologyPub Date : 2025-01-21DOI: 10.1016/j.aquatox.2025.107256
Dongmei Xie, Chen Zhang, De-Sheng Pei
{"title":"Adverse multigeneration combined effects of nano-sized plastics and mercury on growth and reproduction in a planktonic copepod Pseudodiaptomus annandalei","authors":"Dongmei Xie, Chen Zhang, De-Sheng Pei","doi":"10.1016/j.aquatox.2025.107256","DOIUrl":"https://doi.org/10.1016/j.aquatox.2025.107256","url":null,"abstract":"Nano-plastics (NPs) and heavy metals have attracted growing scientific attention because of both pollutants’ wide distribution and ecotoxicity. However, the long-term combined toxicity of NPs and mercury (Hg) on planktonic copepods, a crucial presence in marine environments, is unknown. Here, our study aimed to investigate the multigenerational phenotypic responses of the planktonic copepod <ce:italic>Pseudodiaptomus annandalei</ce:italic> to polystyrene NPs (about 50 nm) and Hg (alone or combined) at environmentally realistic concentrations (23 μg/L for NPs and 1 μg/L for Hg), and the underlying molecular mechanisms were explored. Despite the insignificant effect on survival, NPs could threaten the development and reproduction of <ce:italic>P. annandalei</ce:italic>, being ascribed to down-regulated genes in ingestive and reproductive functions. Hg exposure revealed inhibition of reproduction probably as an energy trade-off strategy. Importantly, in combined NPs and Hg, development and reproduction were further negatively impacted, even relative to NPs or Hg alone. Correspondingly, combined NPs and Hg presented the most pronounced transcriptomic response with a series of changes in cell functions and down-regulation of key genes in the DNA replication pathway and reproductive function as compared to NPs or Hg alone. The findings indicated adverse combined effects of NPs and Hg on <ce:italic>P. annandalei</ce:italic> under multigenerational scenarios, being a greater ecological risk for planktonic copepod than NPs or Hg alone. This study provides molecular insights into the long-term toxicity of combined NPs and Hg to planktonic copepods, underlining the increased risk in the population sustainability of marine zooplankton facing co-existing plastics and Hg pollution.","PeriodicalId":248,"journal":{"name":"Aquatic Toxicology","volume":"20 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143035187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aquatic ToxicologyPub Date : 2025-01-16DOI: 10.1016/j.aquatox.2025.107248
Miguel Eduardo L. Felismino, Ségolène Chevallier Rufigny, Samuel Evan Gonzalez-Fleurant, Grant E. Brown
{"title":"Ingestion of polyethylene microplastics impacts cichlid behaviour despite having low retention time","authors":"Miguel Eduardo L. Felismino, Ségolène Chevallier Rufigny, Samuel Evan Gonzalez-Fleurant, Grant E. Brown","doi":"10.1016/j.aquatox.2025.107248","DOIUrl":"https://doi.org/10.1016/j.aquatox.2025.107248","url":null,"abstract":"Microplastics, particles between 0.001 and 5 mm in diameter, are ubiquitous in the environment and their consumption by aquatic organisms is known to lead to a variety of adverse effects. However, studies on the effects of microplastics on prey fish have not shown consistent trends, with results varying across species and plastic type used. Here, we manipulated the levels of microplastic (MP) exposure among juvenile convict cichlids (<ce:italic>Archocentrus nigrofasciatus</ce:italic>) by feeding them brine shrimp (<ce:italic>Artemia spp</ce:italic>.) exposed to 0, 10, or 100 MP ml<ce:sup loc=\"post\">-1</ce:sup> of virgin polyethylene microspheres (10–20 μm) for a 10-day period. We then tested groups of 3 cichlids in a 2-day maze trial, in which we measured the latency to explore and time to complete a novel maze. We found no impacts of microplastic exposure on foraging rate, growth, or competitive aggression. However, our results demonstrate that microplastics exposure shaped exploratory behaviour and maze performance. Despite these effects, we found very little microplastics remaining in the fish's bodies after the experiment. A companion experiment demonstrates that most plastic particles were egested within 24 h. Our current results show that pristine microplastics at non-lethal levels have consequences on cichlid behaviour and decision-making but not growth.","PeriodicalId":248,"journal":{"name":"Aquatic Toxicology","volume":"18 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143035189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aquatic ToxicologyPub Date : 2025-01-16DOI: 10.1016/j.aquatox.2025.107252
Pengfei Xie, Mohammad Mehdi Ommati, Deshan Chen, Weijun Chen, Lei Han, Xinquan Zhao, Hongwei Wang, Shixiao Xu, Ping Sun
{"title":"Hepatotoxic effects of environmentally relevant concentrations of polystyrene microplastics on senescent Zebrafish (Danio rerio): Patterns of stress response and metabolomic alterations.","authors":"Pengfei Xie, Mohammad Mehdi Ommati, Deshan Chen, Weijun Chen, Lei Han, Xinquan Zhao, Hongwei Wang, Shixiao Xu, Ping Sun","doi":"10.1016/j.aquatox.2025.107252","DOIUrl":"https://doi.org/10.1016/j.aquatox.2025.107252","url":null,"abstract":"<p><p>The hepatotoxicity of microplastics (MPs) has garnered increasing attention, but their effects on elderly organisms remain inadequately characterized, particularly concerning hepatic stress response patterns in environmental conditions. In this study, a 10-day exposure period of elderly zebrafish to polystyrene microplastics (PS-MPs, 1 µm) was conducted, with exposure concentrations set at 5.6 × 10<sup>-7</sup> µg/L, 5.6 × 10<sup>-4</sup> µg/L, and 5.6 × 10<sup>-1</sup> µg/L. PS-MPs-induced toxicity varied with concentration: superoxide dismutase (SOD), complement 3 (C3), and complement 4 (C4) initially decreased before rising; 8‑hydroxy-2-deoxyguanosine (8-OhdG), interleukin-6 (IL-6), and interleukin-8 (IL-8) increased at high concentrations. Additionally, catalase (CAT) activity and thiobarbituric acid reactive substances (TBARS) contents rose with concentration. The aged zebrafish liver exhibited differentiation driven by responsiveness; low levels cause homeostatic disruption, and high levels induce genotoxicity and immune activation. LC-MS identified twelve crucial metabolites involved in 18 metabolic pathways, including amino acids (L-tyrosine, l-arginine), lipids (phospholipids, 12(S)-leukotriene B4 and triglycerides), and N-acetylneuraminic acid, related to energy, immunity, and neurological health. Overall, elderly zebrafish exhibited clear dose-dependent thresholds and distinct physiological stress responses under varying concentrations of PS-MPs. These findings reveal how PS-MP exposure can affect physiological health and metabolism, offering critical insights into the ecological risks faced by aging organisms.</p>","PeriodicalId":248,"journal":{"name":"Aquatic Toxicology","volume":"279 ","pages":"107252"},"PeriodicalIF":4.1,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143027449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aquatic ToxicologyPub Date : 2025-01-16DOI: 10.1016/j.aquatox.2025.107254
Sadeq Abdullah Abdo Alkhadher, Lariyah Mohd Sidek, Mohamad Pauzi Zakaria, Maged Al-gradi, Suhaimi Suratman, Mohammad Sherjeel Javed Khan, Hidayah Basri, Mohd Hafiz Zawawi, Najat Masood, Tonni Agustiono Kurniawan, Sami Magam
{"title":"Impacts of Linear Alkylbenzene (LABs) on ecosystems: Detection, fate and remediation","authors":"Sadeq Abdullah Abdo Alkhadher, Lariyah Mohd Sidek, Mohamad Pauzi Zakaria, Maged Al-gradi, Suhaimi Suratman, Mohammad Sherjeel Javed Khan, Hidayah Basri, Mohd Hafiz Zawawi, Najat Masood, Tonni Agustiono Kurniawan, Sami Magam","doi":"10.1016/j.aquatox.2025.107254","DOIUrl":"https://doi.org/10.1016/j.aquatox.2025.107254","url":null,"abstract":"This review article provides a thorough examination of an interaction between linear alkylbenzenes (LABs) and ecosystems. The review covers various aspects of LABs' impact on ecosystems, focusing on detection and treatment strategies to mitigate ecological consequences. It delves into LABs' role as molecular markers for sewage pollution, their physicochemical properties contributing to persistence, and their effects on aquatic and terrestrial organisms, including disruptions to endocrine systems. The diverse sources of LABs, including domestic wastewater and industrial effluents, are explored, along with their ratios in different matrices for assessing contamination origins. Biodegradation pathways of LABs, both aerobic and anaerobic, are scrutinized, considering their interaction with microbes. Distribution patterns in aquatic environments are discussed, encompassing sediment, water, sewage, and soils. An investigation is conducted on the relationship between LABs and total organic carbon (TOC) as a means of evaluating sewage pollution. It is assessed how sewage treatment facilities (STPs) contribute to biodegradation.","PeriodicalId":248,"journal":{"name":"Aquatic Toxicology","volume":"35 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143035185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}