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61,005 resultsShowing papers similar to Impacts of conventional and biodegradable microplastics on juvenile Lates calcarifer: Bioaccumulation, antioxidant response, microbiome, and proteome alteration
ClearEffects of microplastic fibers on Lates calcarifer juveniles: Accumulation, oxidative stress, intestine microbiome dysbiosis and histological damage
Researchers fed juvenile barramundi fish polyethylene microplastic fibers for 56 days and found that while the fibers did not affect growth, they induced intestinal oxidative stress and disrupted the gut microbiome. Beneficial bacteria including Lactobacillus species were significantly reduced, while overall microbial diversity declined. The study suggests that microplastic fiber ingestion can compromise intestinal health in marine fish even without observable effects on growth.
A review on fate and ecotoxicity of biodegradable microplastics in aquatic system: Are biodegradable plastics truly safe for the environment?
This review examines whether biodegradable plastics are truly safe for aquatic environments, finding that they can break down into microplastics faster than conventional plastics and cause comparable or even greater harm to algae, invertebrates, and fish. The findings suggest that switching to biodegradable plastics alone will not solve the microplastic pollution problem, and these particles can still enter the human food chain through contaminated seafood.
Effects of biodegradable and conventional microplastics on the intestine, intestinal community composition, and metabolic levels in tilapia (Oreochromis mossambicus)
Researchers exposed tilapia fish to both biodegradable (PLA) and conventional (PVC) microplastics for 14 days and compared the effects on their intestines and gut bacteria. Both types of microplastics caused intestinal inflammation and disrupted the gut microbial community, though the specific effects differed between the two plastic types. The study suggests that biodegradable microplastics may not be substantially safer for aquatic life than conventional ones.
Differential biochemical responses of Cyprinus carpio after dietary and waterborne exposure to microplastics from polyethylene-based biodegradable and conventional bags
Researchers compared the toxic effects of microplastics from biodegradable and conventional polyethylene bags on common carp through both dietary and waterborne exposure. They found that the toxicity ranking differed depending on the exposure route, and that biodegradable plastic microplastics showed significant differences from conventional plastics, particularly in liver nitric oxide levels. The study emphasizes that both the chemical composition of microplastics and how organisms encounter them influence the resulting biological harm.
Effects of primary leachates of conventional and alternative plastics in Cyprinodon variegatus fish larvae: Endocrine disruption and toxicological responses
Researchers exposed marine fish larvae to chemical leachates from both conventional and so-called eco-friendly plastics and measured the biological effects. They found that leachates from two alternative bioplastics caused complete larval mortality, while bag leachates from all tested materials disrupted hormonal and metabolic defense pathways. The study suggests that biodegradable plastics are not necessarily safer for marine life than conventional ones.
Multigenerational exposure of microplastics on the microbiota of E. affinis (copepod): a comparative study between biodegradable and nonbiodegradable microplastics
Researchers compared multigenerational effects of biodegradable and conventional microplastics on copepod microbiota, finding that both types altered microbial communities and that microplastics served as substrates for pathogenic bacteria across generations.
Increased transfer of trace metals and Vibrio sp. from biodegradable microplastics to catfish Clarias gariepinus
Researchers compared the transfer of trace metals and Vibrio bacteria from conventional and biodegradable microplastics to catfish. They found that biodegradable microplastics actually transferred more metals and pathogens to the fish than conventional plastics. The study suggests that biodegradable alternatives may not be safer for aquatic organisms and could potentially increase contaminant exposure through ingestion.
Toxicity comparison of polylactic acid and polyethylene microplastics co-exposed with methylmercury on Daphnia magna
Researchers compared the toxicity of biodegradable polylactic acid microplastics with conventional polyethylene microplastics, both alone and in combination with methylmercury, on water fleas. The biodegradable microplastics caused greater harm, significantly reducing survival and reproduction while also increasing mercury accumulation in the organisms. The findings challenge the assumption that biodegradable plastics are always safer for the environment, suggesting they may actually enhance the toxicity of co-occurring pollutants.
Assessment on intestinal health from polylactic acid microplastics degradation on rare minnow (Gobiocypris rarus): Inflammation regulation by mitochondrial dysfunction
Researchers exposed rare minnow fish to photodegraded polylactic acid microplastics to assess intestinal health effects. The study found that these biodegradable plastic particles induced visible intestinal damage, triggered inflammation through mitochondrial dysfunction, and caused oxidative stress, suggesting that even biodegradable plastics may pose ecological risks after environmental degradation.
Effects of Biodegradable and Non-Biodegradable Microplastics on the Microbiota of Eurytemora affinis
Exposure of the estuarine copepod Eurytemora affinis to environmentally realistic concentrations of both compostable (PBAT) and conventional (LDPE) microplastics altered the composition of the copepod's microbiome across multiple generations, with the type of polymer making no significant difference to the microbial effect. This finding is notable because it suggests that labelling a plastic as compostable does not reduce its ecological impact on the gut microbiome of a key zooplankton species, which plays a central role in aquatic food webs.
Accumulation and release of organic pollutants by conventional and biodegradable microplastics in the marine environment
Researchers compared how biodegradable and conventional microplastics accumulate and release organic pollutants in natural seawater over 64 days. They found that biodegradable plastics like PHA and PBS accumulated similar types and levels of pollutants as conventional polyethylene. The study suggests that switching to biodegradable plastics may not reduce the risk of these materials acting as carriers for toxic chemicals in the marine environment.
Comparative toxicity of virgin and biodegraded LLDPE microplastics on growth, behavior, antioxidant, and hematological health of Catla catla fish
Researchers compared the toxicity of virgin versus bacterially degraded polyethylene microplastics on freshwater fish, finding that both types caused abnormal behaviors and disrupted blood parameters in a dose-dependent manner. However, biodegraded microplastics produced less severe effects on growth, survival, and antioxidant enzyme activity, suggesting that microbial degradation may reduce the ecological risk posed by microplastic pollution.
Biodegradable microplastics amplify antibiotic resistance in aquaculture: A potential One Health crisis from environment to seafood
Researchers tracked antibiotic resistance genes in tilapia aquaculture systems exposed to conventional polypropylene and biodegradable PBAT microplastics over 90 days. They found that both types of microplastics promoted the spread of antibiotic resistance genes, with biodegradable plastics showing comparable or even greater effects. The findings challenge the assumption that biodegradable plastics are safer, suggesting they may similarly amplify antibiotic resistance risks in food production systems.
The effect of biodegradable plastics on microplastic accumulation and exposure
Researchers developed a comprehensive method to quantify microplastic accumulation from biodegradable polymers in natural environments, examining whether biodegradable alternatives actually reduce plastic loads compared to conventional polymers under real-world outdoor conditions.
Comparative evaluation of biodegradable microplastic presence in edible and non-edible tissues of cage-cultured and wild fishes of Periyar River
Researchers compared biodegradable microplastic presence in edible and non-edible tissues of wild and cage-cultured fish from the Periyar River in India. Biodegradable plastic particles were detected across species and tissue types including muscle, indicating that these supposedly environmentally friendly alternatives persist long enough to contaminate food fish.
Ingestion and retention of biodegradable vs. non-biodegradable microplastics in a tropical coral reef fish: The role of chemical and physical characteristics
Researchers compared how juvenile reef fish ingested and retained biodegradable versus non-biodegradable microplastics of varying shapes, sizes, and colors. The study found that fish preferred larger, transparent fragments regardless of polymer type, and surprisingly, biodegradable polycaprolactone microplastics persisted longer in the gut than conventional polystyrene, suggesting that biodegradability alone does not reduce retention risks in marine organisms.
Evaluation of the degradation from micro to nanoplastics from biodegradable bags in marine conditions
Researchers evaluated how biodegradable plastic bags degrade into micro- and nanoplastics under environmental conditions, comparing them to conventional plastics. The study found that even biodegradable materials generate persistent micro- and nanoplastic particles under real-world conditions.
Ecological implications of biodegradable and conventional microplastics: Dissolved organic matter bioavailability and microbial response in marine systems
Researchers compared the dissolved organic matter released by biodegradable and conventional microplastics and assessed its bioavailability to marine microbial communities. They found that biodegradable plastics like PLA released organic matter that was more readily used by microorganisms, which altered microbial community composition. The study suggests that while biodegradable plastics break down faster, their leached compounds may have distinct and potentially significant ecological effects in marine environments.
Comparison of the Potential Chronic Toxicity of Polypropylene and Polylactic Acid to the Amphipod Gammarus Aequicauda
Researchers compared the chronic toxicity of conventional polypropylene (PP) and biodegradable polylactic acid (PLA) microplastics on the marine amphipod Gammarus aequicauda to assess whether bioplastics are a safer alternative. The study found that both polymer types caused harm to this crustacean, indicating biodegradable plastics are not necessarily benign once released into marine environments.
Effects of conventional versus biodegradable microplastic exposure on oxidative stress and gut microorganisms in earthworms: A comparison with two different soils
Researchers compared the toxic effects of conventional polyethylene and biodegradable polylactic acid microplastics on earthworms in two different soil types. Both types of microplastic caused oxidative stress and altered gut microbiota in earthworms, with toxicity increasing at higher concentrations. The study found that microplastic concentration was more important than the type of plastic or soil in determining the level of harm, and that biodegradable plastics were not necessarily safer for soil organisms.
Different effects of nano- and microplastics on oxidative status and gut microbiota in the marine medaka Oryzias melastigma
Researchers compared the effects of nanoplastics and microplastics on oxidative stress and gut microbiota in marine medaka fish. They found that nanoplastics caused more severe oxidative damage and greater disruption to the gut microbial community than larger microplastic particles. The study suggests that particle size plays a critical role in determining the biological impact of plastic pollution on aquatic organisms.
Microplastics contamination suppressed immune and health status in cage cultured Barramundi: An investigation on pollution sources, ecotoxicological impacts, and transcription of genes involved in detoxification
Researchers studied microplastic contamination in cage-cultured Barramundi from the Persian Gulf, finding that gills accumulated the most plastic and fish with higher microplastic loads showed suppressed immune function, reduced enzyme activity, and upregulated liver detoxification genes — though biomagnification risk to consumers was low.
Diverse PerspectivesIlluminate the Intestinal Toxicityof Traditional and Biodegradable Agricultural Film Microplastics to Eisenia fetida under Varying Exposure Sequences
Researchers compared intestinal toxicity of traditional plastic agricultural films and biodegradable alternatives across multiple biological perspectives, finding that both types caused gut damage through oxidative stress and inflammation, with biodegradable MPs showing distinct but not necessarily safer toxicity profiles.
Insights into mouse metabolic health and gut microbiota responses to conventional and biodegradable microplastics released from plastic food containers
Researchers compared how conventional polyethylene and biodegradable polylactic acid microplastics from food containers affect mice over four weeks. They found that both types disrupted lipid metabolism and increased harmful gut bacteria, but the biodegradable PLA microplastics actually caused more severe metabolic disruption than conventional polyethylene. The study suggests that biodegradable plastics may not be safer than traditional plastics when it comes to microplastic exposure from food packaging.