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61,005 resultsShowing papers similar to Seasonal assessment of selected trace elements in grass carp (Ctenopharyngodon idella) blood and their effects on the biochemistry and oxidative stress markers
ClearThe effects of exposure to microplastics on grass carp (Ctenopharyngodon idella) at the physiological, biochemical, and transcriptomic levels
Researchers exposed grass carp to microplastics at two concentrations for 21 days and observed liver damage, inhibited growth, and increased oxidative stress. Transcriptome analysis revealed over 1,500 differentially expressed genes related to immune response, metabolism, and cellular stress pathways. The study suggests that microplastic exposure can trigger broad physiological and molecular disruptions in freshwater fish.
Ferrous Ion Alleviates Lipid Deposition and Inflammatory Responses Caused by a High Cottonseed Meal Diet by Modulating Hepatic Iron Transport Homeostasis and Controlling Ferroptosis in Juvenile Ctenopharyngodon idellus
Researchers investigated whether ferrous ion supplementation could mitigate the lipid deposition and inflammatory responses caused by high cottonseed meal diets in juvenile grass carp, finding that Fe2+ addition at 0.2% and 0.4% levels modulated hepatic iron transport homeostasis and controlled ferroptosis over an eight-week feeding trial.
Integrated assessment with biomarker responses and metal concentrations on some fish species from İzmir Bay: A preliminary investigation
Researchers conducted a preliminary investigation of antioxidant biomarkers (superoxide dismutase, catalase, malondialdehyde) and heavy metal bioaccumulation (Hg, Cd, Pb, Cr, Cu, Zn, Mn) in three fish species (Sparus aurata, Chelon labrosus, Diplodus vulgaris) from inner and outer sections of Izmir Bay, Turkey, sampled in November 2019. Using atomic absorption spectrometry and microplate readers, they found higher metal concentrations in liver tissues and elevated Hg and Zn in S. aurata, providing baseline data on pollution-related oxidative stress in coastal fish.
Antioxidative Defense and Gut Microbial Changes under Pollution Stress in Carassius gibelio from Bucharest Lakes
Researchers compared antioxidative responses and gut microbiome changes in Prussian carp collected from polluted and less-polluted lakes in Bucharest, finding that fish from more contaminated sites showed elevated oxidative stress markers and altered microbial communities consistent with exposure to heavy metals and other aquatic pollutants.
Evaluation of Some Biomarkers in Carp (Cyprinus carpio Linnaeus, 1758) Depending on Water and Sediment Pollution of Atatürk Dam Lake
This study assessed water and sediment pollution in Turkey's largest artificial lake and examined biomarkers in resident carp. Elevated pollutant levels in the water were linked to measurable biochemical changes in the fish, signaling environmental stress.
Single and combined effects of microplastics and cadmium on juvenile grass carp (Ctenopharyngodon idellus)
Researchers found that combined exposure to polystyrene microplastics and cadmium in juvenile grass carp caused greater physiological stress than either pollutant alone, with microplastics enhancing cadmium accumulation and intensifying oxidative stress and immune responses.
Detection on Electroplating Effluent-Induced Cytopathological Alterations and DNA Damage in the Blood Samples of Cirrhinus mrigala (Hamilton, 1822)
This study exposed freshwater carp to industrial electroplating effluent for up to 30 days and measured oxidative stress and DNA damage in fish blood. The effluent caused significant blood cell abnormalities and genetic damage in the fish. This paper highlights the broader problem of industrial wastewater contamination in aquatic environments, though it is focused on heavy metal effluent rather than microplastics.
Physiological response and oxidative stress of grass carp (Ctenopharyngodon idellus) under single and combined toxicity of polystyrene microplastics and cadmium
Researchers examined the individual and combined toxicity of polystyrene microplastics and cadmium on grass carp. The study found that fish mortality increased with higher concentrations and that the presence of microplastics elevated cadmium concentration effects, with combined exposure inducing greater oxidative stress than either contaminant alone.
Influence of water chemistry and contaminant occurrence on the oxidative stress ecology of Cottus gobio in a high-mountain lake (Carnic Alps)
Researchers examined oxidative stress in a freshwater fish species living in a high-mountain lake in the Italian Alps, analyzing how water chemistry and contaminant levels affected the fish's health. They found seasonal variations in stress biomarkers that correlated with changes in water conditions and the presence of persistent pollutants including microplastics. The study provides insights into how even remote mountain ecosystems are experiencing measurable biological effects from environmental contamination.
Fish Health Assessment in Relation to Sex and Season: Haematological Variations and Serum Biochemical Constituents of Labeo rohita (Hamilton, 1822) from Kotri Barrage near Jamshoro, Sindh, Pakistan
Researchers monitored blood and serum health markers in rohu fish from a Pakistani river across seasons and between male and female fish, finding variations linked to environmental conditions. Fish health monitoring programs are increasingly incorporating microplastic exposure as a variable alongside traditional water quality measures.
Toxicological and Hematological Assessment of Azoxystrobin in Freshwater Fish: A Study on Grass Carp (Ctenopharyngodon idella)
Researchers assessed the acute toxicity and blood-related effects of the fungicide azoxystrobin on grass carp, a freshwater fish species. They found that exposure to the pesticide caused significant changes in hematological parameters and increased fish susceptibility to harm at measured concentrations. The study highlights the risks that agricultural chemical runoff poses to freshwater aquatic organisms.
Seasonal variations of water physico-chemistry, heavy metal concentrations and ecological abundance and biodiversity of fish from two Lagoon streams
Researchers monitored water chemistry, heavy metal concentrations, and fish biodiversity across seasons in two Nigerian lagoon streams. Heavy metals often adsorb to microplastics in aquatic environments, and documenting baseline contamination levels is important for understanding cumulative pollution impacts on freshwater fish communities.
Mechanisms of Gills Response to Cadmium Exposure in Greenfin Horse-Faced Filefish (Thamnaconus septentrionalis): Oxidative Stress, Immune Response, and Energy Metabolism
This study examined how cadmium, a toxic heavy metal from industrial pollution, damages the gills of a marine fish species by triggering oxidative stress, immune responses, and energy imbalances. While not directly about microplastics, the findings are relevant because microplastics can absorb and transport heavy metals like cadmium into aquatic food chains. Understanding how fish respond to cadmium exposure helps assess the combined risks when heavy metals hitchhike on microplastic particles.
Transcriptome analysis provides insights into copper toxicology in piebald naked carp (Gymnocypris eckloni)
Researchers exposed piebald naked carp to copper — a common water pollutant — and found it significantly disrupted gene activity in the gills and liver, particularly genes involved in building proteins, suggesting that fish respond to metal-induced stress by broadly slowing down protein production as a protective mechanism.
Copper and Microplastic Exposure Affects the Gill Gene Expression of Common Carp During Saltwater Challenge
This study examined how combined copper and microplastic exposure affects gill gene expression in common carp, finding synergistic stress responses including upregulation of genes involved in oxidative stress defense and immune function.
Combined effects of microplastics and copper on antioxidant capacity, gut microbiome, and metabolomics of Pseudorasbora parva
Researchers studied the combined effects of microplastics and copper on the freshwater fish Pseudorasbora parva, examining antioxidant capacity, gut microbiota, and metabolic responses. They found that the presence of microplastics alongside copper actually reduced copper accumulation in tissues and lessened oxidative damage compared to copper exposure alone. The study suggests that while microplastics can alter the toxicity profile of metals in fish, the interactions are complex and involve metabolic adjustments that balance cellular repair and energy expenditure.
The influence of ecological factors in the modulation of pollution biomarkers of two small pelagic marine fish
Researchers examined how ecological factors such as body condition, sex, and season modulate pollution biomarker responses in two small pelagic fish species, finding that biological variability must be accounted for when using hepatic biomarkers to assess marine contamination levels.
Heavy metal baselines in cyprinidae of the Han River: a decade-long study on bioaccumulation trends and species-specific sensitivities
Researchers conducted a decade-long study assessing baseline heavy metal concentrations (copper, total mercury, cadmium, lead, and chromium) in the muscle tissue of three Cyprinidae species — common carp, crucian carp, and barbel steed — from the Han River, identifying species-specific bioaccumulation patterns and sensitivities. Common carp showed the highest overall heavy metal accumulation, providing reference baselines for monitoring aquatic pollution in an urbanized river system.
Histopathological alterations in gills of common carp (Cyprinus carpio Linnaeus, 1758) as a biomarker of heavy metal pollution in Narmada River
This study assessed heavy metal contamination in six sites along India's Narmada River and examined associated histopathological damage to common carp gill tissue, finding site-dependent metal accumulation patterns that correlated with measurable tissue injury in fish.
Bioaccumulation and potential sources of heavy metal contamination in fish species in River Ganga basin: Possible human health risks evaluation
Researchers assessed heavy metal contamination in seven commonly consumed fish species from the Ganga River basin in India, measuring zinc, lead, copper, cadmium, and chromium levels. They found that chromium, cadmium, and lead concentrations in river water exceeded safe limits at all sampling sites, with the highest metal accumulation occurring in fish liver tissue. The health risk assessment indicated potential long-term hazards for human populations consuming fish from these contaminated river segments.
Effects of polystyrene nanoplastics on Ctenopharyngodon idella (grass carp) after individual and combined exposure with zinc oxide nanoparticles
Researchers studied the individual and combined toxic effects of polystyrene nanoplastics and zinc oxide nanoparticles on grass carp. They found that co-exposure caused more severe oxidative stress, immune suppression, and gill tissue damage than either pollutant alone. The study suggests that interactions between nanoplastics and metal nanoparticles in aquatic environments can produce synergistic toxic effects on freshwater fish.
A Comprehensive Review on Cadmium Toxicity in Freshwater Fish: Physiological, Ecological and Health Implications
This comprehensive review examines cadmium toxicity in freshwater fish, covering physiological damage to gills, kidneys, liver, and gonads, ecological impacts on fish populations, and implications for human health through consumption of cadmium-contaminated aquatic food.
Copper-Induced Ionoregulatory Disturbance, Histopathology, and Transcriptome Responses in Freshwater Mussel (Anodonta woodiana) Gills
Researchers investigated copper toxicity in the freshwater mussel Anodonta woodiana, finding that sublethal exposure caused ionoregulatory disturbance, gill histopathology, and significant transcriptomic changes related to stress response and immune function.
Metal load and oxidative stress driven by organotin compounds on rainbow trout
Researchers injected rainbow trout with two forms of tributyltin — a toxic antifouling chemical once widely used in marine paints and now banned — and found that both compounds caused oxidative stress and altered antioxidant defenses in the liver within days. The findings confirm that tributyltin residues still present in aquatic environments pose ongoing ecotoxicological risks to freshwater fish.