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61,005 resultsShowing papers similar to Microplastic exposure causes organ damage in Puntius sophore
ClearEco Toxicological Assessment of Micro Plastic Ingestion in Freshwater Fishes: A Case Study on Bioaccumulation and Histopathological Alterations
Researchers assessed microplastic accumulation in three freshwater fish species (tilapia, rohu, catla) from a major river system, finding microplastics in gastrointestinal tracts and associated histopathological damage in gills, liver, and kidneys.
Integrated biomarker responses and multivariate assessment of polyethylene microplastics toxicity in the endemic freshwater fish Tor putitora
Researchers exposed the endangered Himalayan mahseer fish (Tor putitora) to polyethylene microplastics at environmentally relevant concentrations and assessed multiple biomarkers of toxicity. PE-MP exposure caused oxidative stress, immune disruption, and histological damage in gills, liver, and intestine, with an integrated biomarker index revealing dose-dependent toxicity in this ecologically important endemic species.
Microplastics induced histopathological lesions in some tissues of tilapia (Oreochromis niloticus) early juveniles
Researchers exposed young tilapia fish to different concentrations of microplastics for 15 days to study effects on their organs. The study found damage across multiple tissues including the kidney, liver, pancreas, gills, and muscles, with effects ranging from inflammation and cell death to structural deformation. These findings suggest that microplastic exposure can cause widespread organ damage in fish even at relatively low concentrations.
Influence of Polystyrene Microplastics on Mitochondrial Oxidative Damage in Renal and Muscular Tissues of the Freshwater Fish
Researchers exposed freshwater fish to environmentally relevant concentrations of polystyrene microplastics for up to 15 days and examined mitochondrial damage in kidney and muscle tissues. The exposure disrupted antioxidant defenses, increased oxidative stress, and altered metabolic enzyme activities in both tissue types. Histological examination revealed significant tissue damage including necrosis and degeneration, suggesting that microplastics can cause organ-level toxicity in fish through mitochondrial oxidative stress.
Oxidative stress responses of microplastic-contaminated Gambusia affinis obtained from the Brantas River in East Java, Indonesia
Researchers examined oxidative stress biomarkers in wild Gambusia fish collected from the Brantas River in Indonesia and correlated them with microplastic contamination levels. They found elevated antioxidant enzyme activity in the gills and digestive tracts of fish from more polluted sites, indicating biological stress responses to microplastic exposure. The study provides field-based evidence linking microplastic pollution in tropical rivers to measurable physiological harm in native fish species.
Differential modulation of oxidative stress, antioxidant defense, histomorphology, ion-regulation and growth marker gene expression in goldfish (Carassius auratus) following exposure to different dose of virgin microplastics
Goldfish exposed to two doses of virgin PVC microplastics for four days showed dose-dependent gill, liver, and intestinal tissue damage, elevated oxidative stress markers, disrupted antioxidant enzyme activity, and altered expression of ion-regulation and growth marker genes.
Exposure to polypropylene microplastics via diet and water induces oxidative stress in Cyprinus carpio
Researchers fed carp fish polypropylene microplastics through both food and water and found that exposure caused oxidative stress in the liver, gills, and intestines. The damage was dose-dependent, with higher microplastic concentrations causing more harm to the fish's antioxidant defense systems. Since carp is a widely consumed fish, these findings raise questions about whether microplastics in aquaculture could affect the safety of fish as human food.
The 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.
Histological and Histochemical Effects of Microplastics Administration in Oreochromis niloticus Fingerlings
Researchers exposed Nile tilapia to two types of microplastics and examined histological and histochemical changes in gills, liver, and kidneys, finding tissue-level damage that demonstrates the harmful effects of microplastic ingestion on vital fish organs.
Biochemical, Genotoxic and Histological Implications of Polypropylene Microplastics on Freshwater Fish Oreochromis mossambicus: An Aquatic Eco-Toxicological Assessment
Researchers fed polypropylene microplastics to freshwater tilapia and found they caused oxidative stress, DNA damage, and liver tissue deterioration, with more severe effects after 14 days compared to acute 96-hour exposure. The microplastics disrupted antioxidant enzyme systems and neurotransmitter activity in the fish. The study demonstrates that prolonged microplastic ingestion poses a significant ecological threat to freshwater fish species.
Antioxidants and molecular damage in Nile Tilapia (Oreochromis niloticus) after exposure to microplastics
Researchers exposed juvenile Nile Tilapia to different concentrations of microplastics for 15 days followed by a recovery period. The study found dose-dependent increases in oxidative stress markers, DNA fragmentation, and altered protein patterns in fish exposed to microplastics. Evidence indicates that while fish exposed to the lowest concentration recovered after the treatment ended, higher doses caused more persistent damage.
Organ-specific Microplastic Accumulation and Associated Oxidative Stress and Immune Responses in Barbonymus gonionotus from Downstream Bengawan Solo River, Indonesia
Researchers examined microplastic accumulation and associated biological stress responses in wild fish from the Bengawan Solo River in Indonesia. They found that gills accumulated the most microplastics, with evidence of particles translocating to muscle tissue, and observed elevated markers of immune activation and oxidative stress. The study suggests that combining particle characterization with biological measurements provides a sensitive framework for monitoring microplastic impacts on freshwater fish.
Deleterious Effects of Polypropylene Microplastic Ingestion in Nile Tilapia (Oreochromis niloticus)
Researchers fed Nile tilapia daily doses of polypropylene microplastics for 30 days and observed significant health effects including changes in blood cell counts, altered gut bacteria, and tissue damage to the intestines and liver. The higher dose group showed more pronounced effects, including elevated inflammatory markers and signs of oxidative stress. The study provides evidence that chronic ingestion of microplastics commonly found in aquatic environments can cause meaningful harm to a widely consumed fish species.
Effects of microplastics in freshwater fishes health and the implications for human health
This review examines how microplastics affect the health of freshwater fish, which are a major protein source for billions of people. Fish ingest microplastics that accumulate in their guts, gills, and tissues, leading to inflammation, oxidative stress, and disrupted growth. Since microplastics in fish tissue can transfer to humans through the food chain, this is relevant to both ecosystem and human health.
Enzymatic Stress Responses of Coreius guichenoti to Microplastics with Different Particle Sizes
A critically endangered Chinese river fish, Coreius guichenoti, showed significant biochemical stress responses — including elevated oxidative damage markers — after short-term exposure to polyethylene microplastic fragments. The two particle sizes tested (25 µm and 48 µm) caused stress in different tissues: smaller particles hit the liver and intestine harder, while larger ones affected skin, gills, and muscle. Importantly, stress levels did not return to normal within the observation window after exposure ended, suggesting microplastics could have lasting physiological impacts on this already-vulnerable species.
Toxicity and Functional Tissue Responses of Two Freshwater Fish after Exposure to Polystyrene Microplastics
Researchers exposed zebrafish and perch to polystyrene microplastics for 21 days and assessed tissue-level damage using a battery of biomarkers. They found that the microplastics caused oxidative stress, DNA damage, and activated cell death pathways in both gill and liver tissues. The study suggests that gills are more sensitive to microplastic exposure than liver tissue for most measured parameters, with DNA damage being the most responsive biomarker overall.
Subacute toxic effects of polyvinyl chloride microplastics (PVC-MPs) in juvenile common carp, Cyprinus carpio (Pisces: Cyprinidae)
Juvenile common carp exposed to polyvinyl chloride microplastics showed dose-dependent toxic effects including tissue damage, oxidative stress, and altered biochemical markers over a subacute exposure period. The results indicate that PVC microplastics are harmful to freshwater fish at ecologically relevant concentrations.
Effects of Polystyrene Microplastic Exposure on Liver Cell Damage, Oxidative Stress, and Gene Expression in Juvenile Crucian Carp (Carassius auratus)
Researchers exposed young crucian carp to polystyrene microplastics at different concentrations and found dose-dependent liver damage, with higher concentrations causing more severe tissue injury and weaker antioxidant defenses. The microplastics disrupted genes involved in detoxification and stress response in liver cells. Since crucian carp is a commonly consumed freshwater fish, these findings raise questions about whether microplastic-contaminated fish could affect the health of people who eat them.
Polystyrene microplastics exposure in freshwater fish, Labeo rohita: evaluation of physiology and histopathology
Researchers fed freshwater fish varying levels of polystyrene microplastics for 90 days and found dose-dependent damage to blood health, growth, and organ tissues. Higher microplastic concentrations caused more severe harm to the liver, kidneys, gills, and intestines. The study highlights that microplastics in freshwater systems can accumulate in fish and cause significant health problems, raising concerns about food safety for communities that rely on freshwater fish.
Microplastic-induced oxidative stress response in turbot and potential intake by humans
Researchers examined microplastic contamination in turbot tissues and assessed the oxidative stress response caused by ingested particles. They found that microplastics accumulated most heavily in the gills and caused significant oxidative damage, particularly in the liver. The study also estimated human microplastic intake through fish consumption, highlighting a potential pathway for dietary exposure.
Polystyrene Microplastics Exposure: An Insight into Multiple Organ Histological Alterations, Oxidative Stress and Neurotoxicity in Javanese Medaka Fish (Oryzias javanicus Bleeker, 1854)
Researchers exposed Javanese medaka fish to polystyrene microplastics for 21 days and observed tissue damage across multiple organs including the intestine, liver, and kidney. The study also found increased intestinal oxidative stress and permeability, along with neurotoxicity in the brain characterized by lipid damage and inhibition of the enzyme acetylcholinesterase.
Abundance, characteristics, and risk assessment of microplastics in indigenous freshwater fishes of India
Researchers examined microplastic contamination in five widely consumed freshwater fish species from India and found plastic particles in all specimens, with fibers being the most dominant type. Evidence of microplastics in edible fish tissue indicates translocation from the gut, suggesting a pathway for human exposure through consumption. Risk assessment showed that while microplastic abundance posed a low quantitative risk, the polymer types identified indicated a high hazard potential for the fish species studied.
Effects Of Microplastics On Fish Physiology
This review examines how microplastic exposure affects fish physiology, covering accumulation patterns in different tissues, effects on organ function including liver and gill damage, antioxidant responses, and potential reproductive health consequences from both solo and combined contaminant exposures.
Sub-chronic exposure of Oreochromis niloticus to environmentally relevant concentrations of smaller microplastics: Accumulation and toxico-physiological responses
Researchers exposed Nile tilapia to low, environmentally relevant concentrations of polystyrene microplastics for 14 days and found the particles accumulated in multiple organs including the brain, liver, and reproductive tissues. The fish showed changes in blood chemistry, increased stress hormones, and signs of liver and kidney dysfunction. These results suggest that even realistic levels of microplastic pollution can cause measurable physiological harm in fish.