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Further negative effect of fibrous microplastics to the bioaccumulation and toxicity of decabromodiphenyl ethane on zebrafish
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Researchers investigated how fibrous microplastics from PET plastic interact with a common flame retardant chemical called DBDPE in zebrafish over 28 days. They found that microplastics significantly increased the amount of the flame retardant that accumulated in fish tissue and slowed its elimination from the body. The study suggests that microplastics may act as carriers for other toxic chemicals, amplifying their harmful effects on aquatic organisms.
Co-pollution of microplastics (MPs) and novel brominated flame retardants (NBFRs) in aquatic environments is becoming increasingly common in aquatic environments, raising concerns about their comprehensive ecological impacts. This study investigated the effects of fibrous polyethylene terephthalate (PET) MPs on the bioaccumulation and toxicity of decabromodiphenyl ethane (DBDPE) in zebrafish (Danio rerio). In a 28-day water exposure experiment, co-exposure of fibrous MPs and DBDPE significantly increased the bioavailability of DBDPE in zebrafish and prolonged the half-life of DBDPE in vivo. The elimination rates of DBDPE concentration in muscles of single DBDPE exposure and co-exposure groups were 61.58 % and 56.63 %, respectively. Additionally, the co-exposure exacerbated intestinal damage, including structural deterioration and nutrients depletion, disrupted gut microbiota, promoted the enrichment of genes related to reproductive toxicity, and affected the gut-brain axis, indicating complex toxic interactions in zebrafish. Furthermore, genera of Aurantimicrobium, Cypionkella, and Gemmobacter were the gut microbes significantly associated with main differentially expressed genes(DEGs)in the brain. This study emphasized the exacerbating role of fibrous MPs in DBDPE toxicity, providing new insights into the ecological risks posed by the coexistence of MPs and NBFRs in aquatic ecosystems.
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Effects of fibrous microplastics on the accumulation of tris(2,3-dibromopropyl) isocyanurate and behavior of zebrafish via water- and foodborne exposure routes
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Researchers found that fibrous microplastics enhanced the accumulation of the flame retardant tris(2,3-dibromopropyl) isocyanurate in zebrafish and altered their swimming behavior, demonstrating how MP shape influences contaminant uptake and neurotoxicity.
Combined effects of microplastics and chemical contaminants on the organ toxicity of zebrafish ( Danio rerio )
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Researchers studied the combined effects of microplastics and chemical contaminants like PCBs and methylmercury on zebrafish organs over three weeks of exposure. They found that microplastics carrying adsorbed contaminants produced the most significant effects, particularly on the liver, compared to either microplastics or contaminants alone. The results indicate that microplastics may act as carriers that increase the delivery of harmful chemicals to organisms' tissues.
Influence of microplastics on bisphenol A and bisphenol AF toxicity in aquatic environments: Mechanistic insights for environmental risks
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Researchers investigated how polyethylene microplastics interact with the industrial chemicals bisphenol A and bisphenol AF in zebrafish, finding that microplastics can either reduce or worsen the toxicity depending on the specific chemical and biological pathway involved. For bisphenol A, the microplastics partially absorbed the chemical and reduced its harmful effects, but for bisphenol AF, they worsened toxicity to certain organ systems. The study reveals that microplastics play a complicated dual role in modifying how other pollutants affect aquatic life.
Determination of Bisphenol Compounds and the Bioaccumulation after Co-Exposure with Polyethylene Microplastics in Zebrafish
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Researchers developed a method to measure how bisphenol A and bisphenol S accumulate in zebrafish tissues when microplastics are also present. They found that microplastics increased the accumulation of these hormone-disrupting chemicals in fish tissues, with BPA building up more than BPS. The evidence indicates that microplastics can act as carriers that enhance the uptake of harmful chemicals by aquatic organisms.
Effects of micro/nanoplastics combined with three anthropogenic chemicals on larval zebrafish (Danio rerio): study of toxicity, behaviour and assessment of uptake
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Scientists found that tiny plastic particles alone didn't harm baby zebrafish, but when combined with common chemicals found in flame retardants and antidepressants, the plastics made those chemicals more toxic. This suggests that in the real world, where we're exposed to plastic particles and chemicals together, the combination could be more harmful than either one alone—even though this study was in fish, it raises questions about how plastic pollution might amplify chemical risks for humans too.
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