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61,005 resultsShowing papers similar to Altered gene expression in Chironomus riparius (insecta) in response to tire rubber and polystyrene microplastics
ClearChironomus riparius molecular response to polystyrene primary microplastics
Researchers examined the molecular response of the aquatic midge larva Chironomus riparius to polystyrene primary microplastics, investigating how these emerging contaminants affect gene expression in this standard toxicology test organism.
Suborganismal responses of the aquatic midge Chironomus riparius to polyethylene microplastics
Researchers exposed Chironomus riparius larvae to polyethylene microplastics and used transcriptomics and metabolomics to characterize suborganismal responses, finding disruption of oxidative stress pathways, energy metabolism, and cuticle synthesis — effects not captured by standard life-history endpoints alone.
Effects of Polyurethane Small-Sized Microplastics in the Chironomid, Chironomus riparius: Responses at Organismal and Sub-Organismal Levels
This study exposed the freshwater chironomid Chironomus riparius to polyurethane microplastics (7-9 micrometers) and found dose-dependent effects on survival, growth, and oxidative stress markers. The results indicate polyurethane microplastics are toxic to this widely used aquatic invertebrate indicator species.
Metabolomic responses in freshwater benthic invertebrate, Chironomus tepperi, exposed to polyethylene microplastics: A two-generational investigation
Researchers examined metabolomic changes in the freshwater midge Chironomus tepperi exposed to polyethylene microplastics across two generations, finding that environmentally relevant concentrations altered metabolite profiles and negatively affected survival and emergence.
Epigenetic and Gene Expression Responses in Daphnia magna to Polyethylene and Polystyrene Microplastics
Researchers exposed water fleas (Daphnia magna) to polyethylene and polystyrene microplastics and examined changes at the genetic and molecular level. They found that the microplastics altered DNA methylation patterns and disrupted the expression of genes involved in reproduction and stress response. The study provides evidence that microplastic exposure can cause changes beyond physical harm, affecting organisms at the epigenetic level.
Toxic effects of polyethylene microplastics on transcriptional changes, biochemical response, and oxidative stress in common carp (Cyprinus carpio)
Researchers exposed common carp to varying concentrations of polyethylene microplastics and assessed biochemical, oxidative, and gene expression changes. The study found that microplastic exposure caused significant oxidative stress, altered liver enzyme activity, and modified the expression of stress-related genes in a dose-dependent manner.
Immune response triggered by the ingestion of polyethylene microplastics in the dipteran larvae Chironomus riparius
Ingestion of polyethylene microplastics by Chironomus riparius dipteran larvae activated their innate immune system, as evidenced by upregulation of the phenoloxidase pathway, demonstrating that microplastic ingestion triggers measurable immune responses in aquatic insect larvae.
Molecular characterization of thioredoxin reductase in waterflea Daphnia magna and its expression regulation by polystyrene microplastics
Researchers characterized thioredoxin reductase in the water flea Daphnia magna and found that exposure to polystyrene microplastics significantly altered its expression, indicating oxidative stress. The findings suggest that even at low concentrations, microplastics can disrupt antioxidant defense systems in a key freshwater invertebrate.
Phenotypic and Gene Expression Alterations in Aquatic Organisms Exposed to Microplastics
This review summarizes research on how microplastics affect aquatic animals at the genetic level, covering changes in hatching, development, and growth. Microplastics, especially when combined with other pollutants, trigger abnormal gene activity in antioxidant and stress-response systems in fish and other water organisms. These genetic disruptions in aquatic life are relevant to human health because affected organisms can enter the food chain through seafood.
Toxicity of environmental and polystyrene plastic particles on the bivalve Corbicula fluminea: focus on the molecular responses
Researchers exposed freshwater bivalves to environmental microplastics and nanoplastics collected from a river, as well as to laboratory polystyrene nanoparticles, and measured molecular-level responses. Gene expression analysis revealed that plastic particle exposure activated stress response and immune defense pathways in gill and visceral tissues. The study indicates that even environmentally relevant concentrations of plastic particles can trigger measurable biological stress in filter-feeding organisms.
Exposure to polystyrene microplastics induced gene modulated biological responses in zebrafish (Danio rerio)
Researchers exposed zebrafish to polystyrene microplastics and analyzed changes in gene expression related to immune response, oxidative stress, and endocrine function. They found that microplastic exposure modulated genes involved in inflammation and detoxification pathways, indicating biological stress at the molecular level. The study provides evidence that microplastics can trigger gene-level disruptions in fish even before visible physical symptoms appear.
The impact of microplastics on tissue-specific gene expression in the tropical house cricket, Gryllodes sigillatus
Researchers fed microplastics to tropical house crickets and measured gene expression changes across four different tissue types. They found that microplastic consumption triggered unique responses in each tissue, with notable changes in genes related to stress, immunity, metabolism, and even cancer pathways. The study demonstrates that microplastic exposure affects different organs in distinct ways, highlighting the complexity of how plastic pollution impacts living organisms.
DNA damage and molecular level effects induced by polystyrene (PS) nanoplastics (NPs) after Chironomus riparius (Diptera) larvae
Researchers exposed aquatic midge larvae to polystyrene nanoplastics at concentrations similar to those found in the environment and examined molecular-level effects after just 24 hours. They found significant DNA damage along with changes in genes related to cellular stress, immune response, and hormonal regulation. The study provides early evidence that even short-term, environmentally realistic nanoplastic exposure can trigger harmful molecular changes in aquatic organisms.
Epigenetic and Gene Expression Responses of Daphnia magna to Polyethylene and Polystyrene Microplastics
This study exposed water fleas to polyethylene and polystyrene microplastics and found that both types caused changes in gene activity and epigenetic modifications, which are chemical changes that affect how genes work without altering the DNA itself. Polystyrene caused more severe effects, altering genes involved in stress response, immune function, and reproduction. These epigenetic changes are concerning because they can potentially be passed to future generations, suggesting microplastics could have long-lasting biological effects beyond direct exposure.
Polyamide microplastic exposure elicits rapid, strong and genome-wide evolutionary response in the freshwater non-biting midge Chironomus riparius
Researchers discovered that polyamide microplastic exposure triggered rapid and genome-wide evolutionary responses in the midge Chironomus riparius within just seven generations, demonstrating that microplastics can drive significant microevolutionary changes in aquatic organisms.
The effects of environmental Microplastic on wharf roach (Ligia exotica): A Multi-Omics approach
Wild wharf roaches collected from a microplastic-contaminated South Korean shoreline had 50 times more plastic particles in their guts than roaches from a cleaner site, and the contaminated animals also carried elevated levels of brominated flame retardants leached from the polystyrene foam they had ingested. Gene expression analysis revealed that the contaminated roaches showed altered immune, metabolic, and stress-response pathways. Because wharf roaches are a key detritus-consuming species in coastal ecosystems, this study demonstrates that microplastic pollution can have cascading biological effects from the base of the food web.
Uptake and transcriptional effects of polystyrene microplastics in larval stages of the Mediterranean mussel Mytilus galloprovincialis
Researchers exposed larval stages of a marine organism to polystyrene microplastics and measured gene expression changes, finding tissue-dependent transcriptional responses that suggest microplastics can affect development even at early life stages.
Evaluation of Detoxification‐Related Gene Expression, Oxidative Stress Biomarkers, and Blood Biochemical Parameters in Common Carp ( Cyprinus carpio ) Co‐Exposed to Polyethylene Microplastics and Deltamethrin
Researchers investigated whether polyethylene microplastics worsen the toxic effects of the insecticide deltamethrin in juvenile common carp over a 30-day exposure. The study found that co-exposure to microplastics and deltamethrin affected detoxification-related gene expression, oxidative stress biomarkers, and blood biochemistry, suggesting that microplastics can modify the bioavailability and toxicity of co-occurring pesticides in fish.
Effects of polyvinyl chloride microplastics on reproduction, oxidative stress and reproduction and detoxification-related genes in Daphnia magna
Researchers exposed water fleas (Daphnia magna) to PVC microplastics of two different sizes and measured effects on reproduction, oxidative stress, and gene expression. They found that smaller microplastics caused greater reproductive impairment and stronger oxidative stress responses, along with changes in genes related to reproduction and detoxification. The study demonstrates that microplastic size is an important factor in determining toxicity to freshwater invertebrates.
Polystyrene nanoplastic induces oxidative stress, immune defense, and glycometabolism change in Daphnia pulex: Application of transcriptome profiling in risk assessment of nanoplastics
Researchers used transcriptome sequencing to examine how polystyrene nanoplastics affect gene expression in the water flea Daphnia pulex. After 96 hours of exposure, they identified 208 genes with altered expression levels, linked to oxidative stress, immune defense, and sugar metabolism pathways. The study provides molecular-level evidence that nanoplastic pollution can trigger multiple stress responses in freshwater organisms.
Combined effect of microplastics and tire particles on Daphnia magna: Insights from physiological and transcriptomic responses
Researchers investigated the combined effects of microplastics and tire particles on the water flea Daphnia magna, finding that the mixture triggered significant oxidative stress at environmentally relevant concentrations. Transcriptomic analysis revealed upregulation of antioxidant and metabolic stress genes, while energy reserves like glycogen were affected. The study suggests that co-exposure to these common freshwater pollutants may pose greater ecological risks than either particle type alone.
Do microplastic particles affect Daphnia magna at the morphological, life history and molecular level?
Researchers examined the effects of two polymer mixtures on the water flea Daphnia magna at morphological, life history, and molecular levels. At low but environmentally realistic microplastic concentrations, they found no significant changes in mortality, body size, or reproduction in adult organisms. However, differential gene expression analysis revealed molecular-level responses, suggesting that even when visible effects are absent, microplastics may trigger subtle biological changes.
Molecular characterisation of cytochrome P450 enzymes in waterflea (Daphnia pulex) and their expression regulation by polystyrene nanoplastics
Researchers cloned and characterized two cytochrome P450 enzyme genes in the water flea Daphnia pulex and found that polystyrene nanoplastic exposure at 0.5 mg/L upregulated three of five CYP genes, with expression returning toward baseline at higher doses — suggesting these detoxification enzymes respond to nanoplastic stress and may serve as molecular biomarkers of nanoplastic exposure in aquatic invertebrates.
The Impact of Microplastics on Tissue-specific Gene Expression in the Tropical House Cricket, G. sigillatus
Researchers examined tissue-specific gene expression responses in tropical house crickets (Gryllodes sigillatus) fed microplastics, using RNA sequencing across midgut, hindgut, fat body, and ovary tissues to reveal impacts on immune function and mitochondrial activity.