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61,005 resultsShowing papers similar to The Effects of Acute Exposure to Ammonia on Oxidative Stress, Hematological Parameters, Flesh Quality, and Gill Morphological Changes of the Large Yellow Croaker (Larimichthys crocea)
ClearToxicity of Ammonia Stress on the Physiological Homeostasis in the Gills of Litopenaeus vannamei under Seawater and Low-Salinity Conditions
This study examined how ammonia stress damages the gills of Pacific white shrimp raised in both seawater and low-salinity conditions. While not directly about microplastics, the findings are relevant because microplastics in aquaculture water can worsen ammonia toxicity, and the gill damage observed -- including disrupted ion balance and immune function -- highlights how environmental stressors compound threats to seafood safety.
Dietary polystyrene nanoplastics exposure alters liver lipid metabolism and muscle nutritional quality in carnivorous marine fish large yellow croaker (Larimichthys crocea)
Researchers fed polystyrene nanoplastics to large yellow croaker fish for 21 days and found that the particles accumulated in liver cells and disrupted lipid metabolism. The nanoplastics caused excessive fat buildup in the liver and altered the fatty acid composition and texture of fish muscle tissue. The study suggests that nanoplastic contamination in seafood could affect both fish health and the nutritional quality of fish consumed by humans.
Oxidative stress induced by nanoplastics in the liver of juvenile large yellow croaker Larimichthys crocea
Researchers exposed juvenile large yellow croaker fish to nanoplastics for 14 days followed by a 7-day recovery period and measured signs of oxidative stress in their livers. They found that antioxidant enzyme activity and lipid damage markers increased significantly at higher nanoplastic concentrations, and some effects persisted even after the recovery period. The study suggests that nanoplastic exposure may reduce fish survival rates and could have broader implications for fishery productivity.
Ultrastructural, Antioxidant, and Metabolic Responses of Male Genetically Improved Farmed Tilapia (GIFT, Oreochromis niloticus) to Acute Hypoxia Stress
This study examined how farmed tilapia respond to low-oxygen stress, finding significant changes in antioxidant defenses, metabolism, and organ damage in the gills and liver. While not about microplastics, the research is relevant because microplastic exposure in fish triggers similar oxidative stress responses. Understanding how fish handle environmental stress helps researchers assess the combined impacts when farmed fish face both low oxygen and microplastic contamination.
Reassessment of dietary protein and lipid requirements for large yellow croaker, Larimichthys crocea, reared in net pens
Not directly relevant to microplastics — this study optimises dietary protein and lipid levels for farming large yellow croaker fish in net pens.
Microplastics induce toxic effects in fish: Bioaccumulation, hematological parameters and antioxidant responses
Researchers exposed juvenile fish to polyamide microplastics and found the particles accumulated primarily in the intestine, gills, and liver, causing reduced blood oxygen-carrying capacity, liver stress, and disrupted antioxidant defenses. These findings matter because fish are an important food source for humans, and microplastic accumulation in fish tissues could transfer these contaminants to people through their diet.
Nanoplastics impair the intestinal health of the juvenile large yellow croaker Larimichthys crocea
Researchers exposed juvenile large yellow croaker fish to nano-sized polystyrene particles to assess impacts on intestinal health and growth. The study found that nanoplastics accumulated in the fish and caused disorders in digestion, antioxidant defenses, immune function, and intestinal microflora, indicating that nanoplastics can significantly impair gut health in commercially important marine fish species.
Effects of Microplastics on the Oxygen Consumption and Histological Changes of the Cultured Nile Tilapia Oreochromis niloticus
This study found that microplastic exposure caused tissue damage in the gills and intestines of tilapia fish, with higher concentrations leading to more severe changes. Since tilapia is widely consumed worldwide, these findings raise questions about whether microplastics in farmed fish could affect the quality and safety of the seafood on our plates.
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.
Investigating the Impact of Disrupting the Glutamine Metabolism Pathway on Ammonia Excretion in Crucian Carp (Carassius auratus) under Carbonate Alkaline Stress Using Metabolomics Techniques
This study examined how disrupting a key metabolic pathway affects ammonia processing in crucian carp under alkaline water stress. The research identified significant changes in lipid, amino acid, and energy metabolism when the glutamine pathway was blocked. While not directly about microplastics, the findings are relevant because microplastic pollution can alter water chemistry and compound metabolic stress in freshwater fish species.
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.
Toxic Effects on Bioaccumulation, Hematological Parameters, Oxidative Stress, Immune Responses and Tissue Structure in Fish Exposed to Ammonia Nitrogen: A Review
This review summarizes how ammonia nitrogen pollution in aquatic environments affects fish health, including damage to blood, organs, immune function, and tissue structure. Researchers found that ammonia exposure triggers oxidative stress and bioaccumulation in fish, with toxic effects varying by species and developmental stage. The study highlights the importance of monitoring ammonia levels in waterways to protect aquatic ecosystems and the food chain.
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.
Exploration of polyacrylamide microplastics and evaluation of their toxicity on multiple parameters of Oreochromis niloticus
Researchers evaluated the toxicity of polyacrylamide microplastics on Nile tilapia fish at different concentrations and found significant harmful effects across multiple biological systems. The microplastics disrupted antioxidant enzymes, reduced blood cell counts, and caused histological damage to gills, liver, and intestine. The study indicates that polyacrylamide microplastics, increasingly present in aquatic environments, are toxic agents with broad physiological impacts on freshwater fish.
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.
Growth performance, hematological and oxidative stress responses in Nile tilapia (Oreochromis niloticus) exposed to polypropylene microplastics
Nile tilapia fish fed polypropylene microplastics for 7 weeks showed significantly reduced growth, blood abnormalities indicating anemia, and oxidative stress damage in both liver and brain tissue. The effects were dose-dependent, with higher microplastic concentrations causing more severe harm. Since tilapia is one of the most widely farmed and consumed fish globally, these findings raise concerns about the health of both farmed fish and the people who eat them.
Toxic effects of microplastics on freshwater fish (Channa argus): mechanisms of inflammation, apoptosis, and autophagy
Freshwater snakehead fish exposed to polystyrene microplastics for four weeks developed inflammation, cell death, and tissue damage in their liver, intestines, kidneys, and gills. The damage worsened with higher microplastic concentrations and involved disruption of the fish's antioxidant defenses and immune system. Since snakehead is a commonly consumed fish in Asia, these findings raise questions about whether microplastics in aquaculture environments could affect the safety of fish as human food.
Oxidative stress, inflammation, and steatosis elucidate the complex dynamics of HgCl2 induced liver damage in Channa punctata
This study showed that mercury chloride exposure caused progressive liver damage in fish through oxidative stress, inflammation, and fatty liver disease over 45 days. While focused on mercury rather than microplastics, the research is relevant because microplastics can absorb and transport mercury and other heavy metals in aquatic environments. The combined exposure of fish to mercury-carrying microplastics could worsen liver damage and affect the safety of fish consumed by humans.
Disturbing ion regulation and excretion in medaka (Oryzias melastigma) gills by microplastics: Insights from the gut-gill axis
Researchers investigated the effects of three sizes of polystyrene microplastics on ion regulation and ammonia excretion in medaka fish gills. The study found that microplastics transiently disrupted sodium and potassium flux rates and affected gill function through a gut-gill axis, suggesting that microplastic accumulation in the digestive system can indirectly impact gill physiology.
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.
Ecological Toxicity, Oxidative Stress and Impacts of Microplastics on Fish Gills
This review summarizes research on how microplastic exposure damages fish gills, a critical organ for breathing, waste removal, and maintaining body chemistry. Researchers found that microplastics cause oxidative stress, DNA damage, and structural changes to gill tissue, which can impair blood parameters and overall fish health. The findings highlight that gill damage from microplastics may be a widespread concern for freshwater and marine fish populations.
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.
High microplastics concentration in liver is negatively associated with condition factor in the Benguela hake Merluccius polli
Researchers quantified microplastics in gills, liver, and muscle of 94 Benguela hake caught commercially off northwest Africa, finding that high liver microplastic concentrations were negatively correlated with fish body condition, suggesting physiological costs of microplastic accumulation.
Photoaged Microplastics Disrupt the Response of Marine Medaka ( Oryzias melastigma ) to Ocean Acidification: Perspectives from Energy Metabolism and Ammonia Production
Researchers examined how photoaged microplastics interact with ocean acidification to affect marine medaka fish. The study found that UV-weathered microplastics disrupted the fish's ability to compensate for acidified conditions by altering energy metabolism and ammonia production, suggesting that combined exposure to aged microplastics and ocean acidification may be more harmful than either stressor alone.