Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1215922 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Tire-wear particles (TWPs) are considered among the largest contributors of microplastics to the environment. They are subject to break-down due to environmental weathering, which allows for potentially toxic chemicals to be leached from and sorbed onto the particles. In this study, leachate generated from “weathered” and “un-weathered” TWPs were used for sublethal toxicity tests with Americamysis bahia.
2025-01-01 | GSE223584 | GEO
Project description:Tire wear particles (TWP) are small micro- or nano-particles resulting from the friction of tire tread against roads. These microplastics have been found in waterways, usually through rain and wind, posing a potential risk to exposed aquatic life. The goal of this project was to assess the toxicity of chemical leachates from TWP and characterize how they may impact the health and development of aquatic life, like Danio rerio, zebrafish. Furthermore, we also determined if solar-simulated or dark conditions intensified the effects of TWP, considering processes like photodegradation and photochemical oxidation occur in sunlight. Zebrafish were exposed from 0-4 days post fertilization (dpf) to a filtered TWP solution at varying concentrations, and each concentration was leached in either solar-simulated or dark conditions. Mortality and hatching rates were quantified throughout the exposures, and physical anomalies were recorded at 4 dpf using microscopy. Ethyoxyresorufin-O-deethylase (EROD) activity, an indicator of Phase I biotransformation, was performed using fluorescent microscopt. RNA sequencing was performed for 4 dpf larvae. TWP exposures, regardless of leaching light status, increased mortality, yolk sac edema, pericardial edema, spinal curvature, and craniofacial malformations, while decreasing hatching and swim bladder inflation. Regardless of lighting during leaching, EROD activity increased in the liver and brain and decreased in the gut CYP1A. RNA sequencing revealed some conserved processes in response to TWP, regardless of light status during leaching, including those involved in neurobiological function. However, divergent responses were also observed for processes such as amino acid metabolism, steroid biosynthesis, and fatty acid metabolism. Overall, these results suggest a disruption of embryonic development in zebrafish when exposed to TWP, and that sunlight during chemical leaching can alter the molecular responses to TWP.
2025-08-25 | GSE233518 | GEO
Project description:Transcriptomic Analysis of Zebrafish Larvae Exposed to Tire Wear Particle Leachates
| PRJNA1273850 | ENA
Project description:<p>As global vehicular electrification accelerates, the exponential accumulation of tire wear particles (TWPs) poses a pervasive threat to edaphic ecosystems. To elucidate the systemic bioenergetic impact of TWP toxicity, we performed a non-targeted metabolomic profiling of the soil sentinel earthworm, Eisenia fetida. Earthworms were exposed to environmentally relevant ingestible sizes of TWPs at a high-concentration gradient (5% w/w) in a soil microcosm for 21 days. Post-exposure, gut tissues were aseptically dissected, and metabolites were extracted using a methanol:water (4:1 v/v) solvent system prior to analysis via UHPLC-Q Exactive HF-X MS/MS. The metabolomic landscape reveals a profound systemic metabolic reprogramming. Key findings include a severe carbohydrate assimilation blockade—evidenced by the abnormal intracellular accumulation of complex carbohydrates and energy intermediates—and a lipid-mediated inflammatory hyperactivation, specifically targeting arachidonic acid and sphingolipid pathways. This dataset provides the critical biochemical evidence for an unsustainable 'bioenergetic triage,' demonstrating how TWP exposure forces earthworms into a fatal metabolic-immune deadlock.</p>
2026-07-07 | MTBLS14967 | MetaboLights