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61,005 resultsShowing papers similar to Temporal stability and assembly mechanisms of gut microbiota in sea cucumbers response to nanoplastics treatment
ClearNanoplastics exposure simplifies the network structure of sea cucumber (Apostichopus japonicus) gut microbiota and improves cluster randomness
Researchers exposed sea cucumbers to nanoplastics and found that the particles significantly reduced the diversity and stability of their gut bacteria, shifting the microbial community toward potentially harmful species. The good news is that after 35 days in clean water, the gut microbiome largely recovered to its pre-exposure state. The study reveals that while nanoplastic exposure disrupts the gut health of marine animals, some recovery is possible once the exposure stops.
Adverse effects of polystyrene nanoplastics on sea cucumber Apostichopus japonicus and their association with gut microbiota dysbiosis
Researchers used multiple advanced techniques to study how polystyrene nanoplastics affect sea cucumbers, an important aquaculture species. They found that nanoplastic exposure disrupted the animals' gut microbiome, triggered inflammation, and impaired immune function. The study suggests that nanoplastic pollution in aquaculture environments could harm the health of commercially farmed marine species.
Potential harmful impacts of micro- and nanoplastics on the health of a tropical sea cucumber, Holothuria leucospilota, evidenced by changes of gut microflora, histology, immune and oxidative indexes
Scientists exposed tropical sea cucumbers to both nano-sized and micro-sized plastic particles and found that both caused gut damage, altered the gut microbiome, triggered oxidative stress, and disrupted immune function. Notably, the smaller nanoplastics had stronger effects than the larger microplastics, and plastic particles were observed accumulating in the gut tissue.
Effect of PET microplastics on the growth, digestive enzymes, and intestinal flora of the sea cucumber Apostichopus japonicus
Researchers studied how PET microplastics of different sizes and concentrations affect sea cucumbers over a 28-day period. They found that microplastic exposure disrupted digestive enzyme activity and altered the composition of gut bacteria in the animals. The study suggests that microplastic pollution in marine environments could impair the health and digestion of important seafloor organisms even at environmentally relevant levels.
Nanoplastics affect the growth of sea urchins (Strongylocentrotus intermedius) and damage gut health
Researchers exposed sea urchins to nanoplastics at two concentrations for 28 days and found significant reductions in growth rates and digestive enzyme activity. The nanoplastics caused visible damage to intestinal tissue and altered gut bacterial community composition, with several bacterial groups appearing exclusively in exposed animals. The study suggests that nanoplastic exposure can harm marine invertebrates by disrupting both digestive function and gut microbial balance.
Existence of microplastics in the edible part of the sea cucumber Apostichopus japonicus
Researchers demonstrated that microplastics can transfer into the edible body wall of sea cucumbers (Apostichopus japonicus), entering through the outer surface and potentially posing a threat to human health through seafood consumption.
Adverse effects of dietary virgin (nano)microplastics on growth performance, immune response, and resistance to ammonia stress and pathogen challenge in juvenile sea cucumber Apostichopus japonicus (Selenka)
Dietary polystyrene nano- and microplastics significantly reduced growth in juvenile sea cucumbers, caused oxidative stress, and suppressed immune and ammonia detoxification responses, with 100 nm nanoplastics proving more toxic than 20 µm microplastics in a size-dependent manner.
Impacts of microplastics exposure on mussel (Mytilus edulis) gut microbiota
Researchers exposed marine mussels (Mytilus edulis) to microplastics and analyzed changes to their gut microbiota, finding significant shifts in microbial community composition that could affect digestion, immunity, and overall health.
Effect of chronic exposure to microplastic fibre ingestion in the sea cucumber Apostichopus japonicus
Sea cucumbers (Apostichopus japonicus) were chronically exposed to microplastic fibers to evaluate effects on growth and physiology over time. The study found that microfiber ingestion affected the sea cucumbers' health, with implications for echinoderm populations in habitats where microfibres are the dominant microplastic shape.
Exposure to nanoplastics disturbs the gut microbiome in the soil oligochaete Enchytraeus crypticus
Researchers fed the soil oligochaete Enchytraeus crypticus diets containing different concentrations of nano-polystyrene particles and found that exposure significantly altered the gut microbiome composition. The study suggests that nanoplastic ingestion can disturb the microbial communities in soil invertebrate digestive systems, which may have cascading effects on nutrient processing and organism health.
Effects of nanoplastics on clam Ruditapes philippinarum at environmentally realistic concentrations: Toxicokinetics, toxicity, and gut microbiota
Researchers exposed clams to nanoplastics at concentrations found in real marine environments and tracked how the particles accumulated in their tissues over 14 days. The nanoplastics caused physical damage and significantly altered the clams' gut bacteria. This is concerning because clams are widely consumed seafood, meaning nanoplastic contamination could affect both marine ecosystems and human food sources.
Bioaccumulation of functionalized polystyrene nanoplastics in sea cucumber Apostichopus japonicus (Selenka, 1867) and their toxic effects on oxidative stress, energy metabolism and mitochondrial pathway
This study investigated how different types of polystyrene nanoplastics accumulate in sea cucumbers and affect their health. Researchers found that nanoplastics built up in the animals' tissues and caused oxidative stress, disrupted energy metabolism, and damaged mitochondrial function. The findings suggest that the surface chemistry and size of nanoplastics influence how toxic they are to marine organisms.
Evidence of size-dependent toxicity of polystyrene nano- and microplastics in sea cucumber Apostichopus japonicus (Selenka, 1867) during the intestinal regeneration
Sea cucumbers exposed to polystyrene particles of different sizes for 30 days showed that nanoplastics (80 nm) accumulated more in intestinal tissue and caused greater harm than larger microplastics. The nanoplastics disrupted cell growth, immune function, and triggered oxidative damage through different biological pathways than the larger particles. Since sea cucumbers are a harvested seafood, this raises concerns about nanoplastic contamination in marine food sources.
Incomplete recovery of gut microbiota in marine medaka (Oryzias melastigma) during the depuration phase, after exposure to sulfamethazine/nanoplastics
Researchers found that gut microbiota in marine medaka did not fully recover after 21 days of depuration following exposure to sulfamethazine and polystyrene nanoplastics, indicating that antibiotic and nanoplastic co-exposure can cause lasting disruption to fish gut microbial communities.
Impact of nanoplastics on hemolymph immune parameters and microbiota composition in Mytilus galloprovincialis
Mytilus galloprovincialis mussels exposed to amino-modified polystyrene nanoplastics for 96 hours showed disrupted hemolymph immune parameters and significant shifts in microbiota composition, suggesting nanoplastics alter both immune function and the microbial communities mussels rely on.
Microplastic and nanoplastic exposure induced transcriptional and physiological alterations and triggered immune responses in the sea cucumber, Holothuria leucospilota
Researchers exposed sea cucumbers to polyethylene microplastics and nanoplastics for 14 days and measured changes in gene expression, oxidative stress, and immune function. They found that nanoplastics caused more severe effects than microplastics, including widespread changes in gene activity and signs of immune system activation. The study raises concerns about the vulnerability of bottom-feeding marine animals that inadvertently consume plastic particles from sediment.
Mechanism underlying the toxicity of the microplastic fibre transfer in the sea cucumber Apostichopus japonicus
Researchers investigated how microplastic fibers enter and move through sea cucumbers (Apostichopus japonicus), finding that fibers ingested via the respiratory tree entered the coelomic fluid and triggered immune cell responses, and that fiber characteristics — particularly length — determined the severity of tissue damage.
Size-dependent effects of microplastics on intestinal microbiome for Perna viridis
Researchers found that the size of microplastic particles determines how they change the gut bacteria of green mussels, with the smallest particles causing the most disruption to beneficial bacteria and promoting potentially harmful species. Since mussels are widely consumed as seafood, changes to their gut health and the bacteria they carry could affect human food safety.
Microplastic ingestion by the farmed sea cucumber Apostichopus japonicus in China
Sea cucumbers farmed along China's Bohai and Yellow Seas were found to ingest microplastics, with particles also detected in their coelomic fluid — suggesting internal translocation beyond the gut. The findings indicate farmed sea cucumbers may serve as useful sentinels for monitoring sediment microplastic pollution at aquaculture sites.
Microplastic contamination alters microbial community in commercially important bivalves, Geloina expansa, Anadara cornea, and Meretrix meretrix from tropical waters
Researchers exposed three commercially important tropical bivalve species to polyethylene terephthalate microplastics for 10 days and found significant changes in their gut microbial communities. The effects varied between species and collection locations, with some bivalves showing increased harmful bacteria and reduced beneficial microbes. The study suggests that microplastic pollution can disrupt the gut health of seafood species that are important food sources in tropical regions.
Impact of a chronic waterborne exposure to polystyrene nanoplastics on the gilthead seabream (Sparus aurata): Combining traditional and multi-omics approaches
Researchers exposed gilthead seabream to environmentally relevant and elevated polystyrene nanoplastic concentrations for 28 days, finding no visible tissue damage or blood abnormalities but significant shifts in gut microbiome diversity and dose-dependent changes in plasma metabolites linked to energy metabolism, suggesting subtle long-term risks for aquaculture production.
Impacts of polystyrene nanoplastics on zebrafish gut microbiota and mechanistic insights
Zebrafish exposed to polystyrene nanoplastics showed significant changes in their gut bacteria, with beneficial species like Bifidobacterium declining and potentially harmful bacteria increasing. The nanoplastics physically entered intestinal tissues, causing visible damage to gut cells. This study is relevant to human health because our gut microbiome plays a key role in immunity and digestion, and similar disruption from nanoplastic exposure could contribute to digestive and immune problems.
The Structure and Function of Gut Microbiomes of Two Species of Sea Urchins, Mesocentrotus nudus and Strongylocentrotus intermedius, in Japan
This study characterized the gut microbiomes of two sea urchin species important to Japanese marine aquaculture using metagenomic methods, revealing distinct microbial communities linked to habitat and growth conditions. Understanding the microbiome of aquaculture organisms is relevant to their health and food safety, particularly given that environmental contaminants including microplastics can alter gut microbiota.
Unveiling the gut’s plastic predicament: How micro- and nano-plastics drive distinct toxicological pathways in Enchytraeus crypticus
Researchers exposed the soil invertebrate Enchytraeus crypticus to environmentally relevant concentrations of polystyrene microplastics (50 µm) and nanoplastics (100 nm), finding that nanoplastics caused greater gut microenvironment disruption and more severe biotoxicity than microplastics, acting through distinct mechanistic pathways.