We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Effects of Polystyrene Nanoplastics on Oxidative Stress, Blood Biochemistry, and Digestive Enzyme Activity in Goldfish (Carassius auratus)
AI summary Read the abstract
Goldfish exposed to polystyrene nanoplastics in their diet for 21 days showed significant oxidative stress, disrupted blood chemistry, and reduced digestive enzyme activity, with effects worsening at higher doses. The smallest nanoplastics caused the most damage to the fishes' antioxidant defense systems and overall health. These findings add to the evidence that nanoplastics in aquatic environments can harm fish health in ways that may affect the safety of fish consumed by humans.
Plastic pollution in aquatic ecosystems has become a global concern, and nanoplastics, due to their small size and high penetration potential, pose significant risks to aquatic organisms. This study aimed to evaluate the effects of polystyrene nanoplastics (PS-NPs) on oxidative stress biomarkers, blood biochemical parameters, and digestive enzyme activities in Goldfish (Carassius auratus). The experiment was conducted over 21 days, exposing fish to four different dietary concentrations of PS-NPs (0, 1, 10, and 100 mg/Kg). The results showed that chronic exposure to 50 nm PS-NPs significantly increased the activity of antioxidant enzymes (CAT, SOD, and GPx) and MDA activity in the gill, kidney, and liver tissues, indicating the induction of oxidative stress. Furthermore, notable alterations were observed in blood biochemical enzymes (alkaline phosphatase [ALP], alanine aminotransferase [ALT], aspartate aminotransferase [AST], and lactate dehydrogenase [LDH]), suggesting cellular damage and physiological disturbances. Additionally, PS-NP exposure affected the activity of digestive enzymes (amylase, lipase, and protease), which may impact nutrient digestion and absorption. These findings highlight that PS-NPs can adversely affect aquatic animal health and may influence the nutritional quality of fish. Therefore, further research is necessary to assess the long-term ecological and toxicological impacts of nanoplastics in freshwater ecosystems.
More Papers Like This
Size-dependent effects of microplastic on uptake, immune system, related gene expression and histopathology of goldfish (Carassius auratus)
AI summary Read the abstract
Researchers exposed goldfish to two sizes of polystyrene microplastics at environmentally relevant concentrations for 28 days. The study found that microplastics accumulated in gill, liver, and intestine tissues, causing damage that worsened with smaller particle size and higher doses. The results indicate that microplastics trigger oxidative stress and immune responses in fish, with smaller particles posing greater health risks.
Ecotoxicological effects of polystyrene nanoplastics on common carp: Insights into blood parameters, DNA damage, and gene expression
AI summary Read the abstract
Exposing common carp to polystyrene nanoplastics caused significant DNA damage in blood and brain cells, along with changes in genes related to immune function and stress response. Higher concentrations led to more severe effects, and the nanoplastics also disrupted liver antioxidant defenses. Since carp are widely consumed fish, these findings raise questions about the safety of fish from nanoplastic-contaminated waters for human consumption.
Toxicity comparison of nano-sized and micron-sized microplastics to Goldfish Carassius auratus Larvae
AI summary Read the abstract
Researchers compared the toxic effects of nano-sized and micron-sized polystyrene microplastics on goldfish larvae over seven days. Both sizes accumulated in the digestive tract and caused oxidative stress, tissue damage, and increased heart rate at high concentrations. Notably, the nano-sized particles were able to penetrate through the skin into muscle tissue and cause nerve fiber damage, suggesting they may be more hazardous than larger microplastics.
Sub-chronic nanoplastic toxicity in Etroplus suratensis (Pisces, Cichilidae): Insights into tissue accumulation, stress and metabolic disruption
AI summary Read the abstract
Researchers exposed pearl spot fish to polystyrene nanoplastics at different concentrations for 14 days and found that the particles accumulated in multiple organs with concentration-dependent distribution patterns. The nanoplastics caused elevated glucose and cholesterol levels, suppressed antioxidant defenses, and increased markers of oxidative damage and stress. Gene expression changes in stress response and growth-related genes suggest that nanoplastic exposure may impair both immune function and normal development in fish.
Polystyrene Nanoplastics Induce Multi-Organ Toxicity in the Rainbow Trout (Oncorhynchus Mykiss): An Integrated Assessment of Physiological, Immunological, and Molecular Responses
AI summary Read the abstract
Rainbow trout fed polystyrene nanoplastics for 28 days showed harmful effects across multiple organs, with higher doses causing worse outcomes. Fish had lower survival, altered blood and immune markers, changes in antioxidant and inflammation related genes, and tissue damage in the liver, spleen, and intestine.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.