We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Exploring the Coexposure Effects of Pyrogallol and Microplastic on the Red Swamp Crayfish Procambarus clarkii
AI summary Read the abstract
Researchers exposed freshwater crayfish to microplastics and pyrogallol (a plant-derived chemical) both alone and together, and found that the combination caused worse damage than either pollutant alone. The crayfish showed liver damage, reduced antioxidant defenses, and immune system changes. Since crayfish are a common food source, this study highlights how microplastics interacting with other environmental chemicals could affect food safety.
Investigating the impact of two or more toxic chemicals on aquatic organisms is one of the main objectives of toxicological research. Microplastics (MPs) are identified as a carrier or vector for other pollutants. Therefore, the current study investigated the effects of both pyrogallol (PG) and MPs, individually and in combination, on freshwater crayfish ( Procambarus clarkii ). Following a 15‐day exposure to 10 mg/L of PG and100 mg/L MPs and their combination (10 mg/L PG + 100 mg/L MPs), the hemocyte count, hepatopancreatic parameters, antioxidant variables, and histopathological markers were all assessed in the crayfish. The results revealed that PG and MPs potentially individually or combined altered the hemocyte count (including granular and semigranular) compared to control group (0.001 ≥ p < 0.0001). The levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), and protein showed significant elevation ( p < 0.05) in PG–MP‐exposed fish compared to control ones. In comparison to control P. clarkii , the measured oxidation indicators, superoxide dismutase (SOD), glutathione (GSH), and total antioxidant capacity (TAC), showed a significant reduction after single exposure to PG and MPs (0.001 > p < 0.0001), while catalase (CAT) and malondialdehyde (MDA) elevated drastically (0.05 > p < 0.0001). The histology of the hepatopancreas has shown many deformities and abnormalities after individual or combined toxicity, such as vacuolations, degraded hepatopancreatic tubules, eosinophilic deposits, hemocytic infiltrations, and aberrant tubules. Accordingly, there is a synergistic relationship between PG and MP toxicity to crayfish. Therefore, it is crucial to routinely check and assess the discharge of waste into waterways.
More Papers Like This
Immunological, neurological, and intestinal changes in red swamp crayfish (Procambarus clarkii) exposed to the combined toxicity of Pyrogallol and microplastics
AI summary Read the abstract
Crayfish exposed to both the chemical pyrogallol and microplastics together suffered worse immune suppression, nerve damage, and intestinal injury than those exposed to either pollutant alone. This synergistic effect is concerning because aquatic organisms face mixtures of pollutants in real waterways, and the combined damage can move up the food chain to affect the safety of seafood consumed by humans.
Single and combined effects of CuSO4 and polyethylene microplastics on biochemical endpoints and physiological impacts on the narrow-clawed crayfish Pontastacus leptodactylus
AI summary Read the abstract
Researchers exposed freshwater crayfish to polyethylene microplastics and copper sulfate, both alone and together, for 28 days. The combination caused worse effects than either pollutant alone, including liver damage, immune suppression, and increased oxidative stress. This suggests microplastics can amplify the harmful effects of other environmental pollutants in aquatic food sources.
Toxicity effects of microplastics individually and in combination with Aeromonas hydrophila on freshwater crayfish (Astacus leptodactylous)
AI summary Read the abstract
Researchers investigated the combined effects of microplastics and the pathogenic bacterium Aeromonas hydrophila on freshwater crayfish over 30 days. The study found that co-exposure to microplastics and the pathogen caused more severe disruptions to blood biochemistry, liver oxidative balance, and immune function than either stressor alone, suggesting microplastics can amplify pathogen-related damage.
Potential synergistic effects of microplastics and zinc oxide nanoparticles: biochemical and physiological analysis on Astacus leptodactylus
AI summary Read the abstract
Researchers exposed crayfish to microplastics and zinc oxide nanoparticles, both alone and combined, and found that the combination caused greater harm than either pollutant on its own, including increased liver stress markers and reduced antioxidant defenses. These findings suggest that microplastics may make other common environmental pollutants more toxic when they occur together in waterways that supply food and drinking water.
Combined exposure to microplastics and copper elicited size-dependent uptake and toxicity responses in red swamp crayfish (Procambarus clarkia)
AI summary Read the abstract
Scientists exposed red swamp crayfish to microplastics of two sizes combined with copper, finding that smaller microplastics increased copper accumulation in tissues and caused more organ damage. The combined exposure reduced antioxidant defenses and disrupted genes that help regulate copper in the body. Since crayfish is widely consumed, this study raises concerns that microplastics in waterways could increase the amount of toxic metals that accumulate in popular seafood.
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.