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61,005 resultsShowing papers similar to Composition of the gut microbiota at the genus level following the administration of MP.
ClearComposition of the gut microbiota at the phylum level following the administration of MP.
Researchers characterized gut microbiota composition at the phylum level in wild-type and leptin-knockout obese mice following microplastic administration, finding statistically significant shifts in phylum-level bacterial distribution that differed between obese and normal mice.
Gut Check: Microbiota and Obesity in Mice Exposed to Polystyrene Microspheres
Researchers found that gut microbiota appeared to play a mediating role in the obesity outcomes observed in mice fed manufactured polystyrene microspheres, suggesting that microplastic-induced alterations to the gut microbiome may be a mechanism linking microplastic exposure to metabolic dysfunction and weight gain.
Dysbiosis of gut microbiota in C57BL/6-Lepem1hwl/Korl mice during microplastics-caused hepatic metabolism disruption
Researchers administered polypropylene microplastics orally to obese mice for 9 weeks and found disruption of hepatic lipid, glucose, and amino acid metabolism alongside structural changes in gut microbiota, with microplastic-treated mice showing decreased hepatic lipid accumulation and altered abundance of specific bacterial genera.
Comparison of (a) Chao index and (b) Shannon diversity index of the fecal microbiota in WT and Lep KO mice.
Researchers compared Chao richness and Shannon diversity indices of fecal microbiota in wild-type and leptin-knockout mice after microplastic treatment, finding that both obesity and microplastic exposure significantly altered gut microbial diversity metrics.
The impact of microplastics on the mice gut microbiome: a meta-analysis
This meta-analysis pools data from multiple mouse studies to assess how ingested microplastics affect gut bacteria. It found that microplastic exposure can alter the balance of the gut microbiome, which is important because gut health is closely tied to immune function, digestion, and overall well-being.
How do microplastics affect the composition and function of gut microbiota?
Researchers reviewed how microplastics may disrupt gut microbiota composition and metabolic function, noting that while dysbiosis is a likely outcome of exposure, the full extent of these effects in humans remains poorly characterized and understudied.
How do microplastics affect the composition and function of gut microbiota?
Researchers reviewed how microplastics may disrupt gut microbiota composition and metabolic function, noting that while dysbiosis is a likely outcome of exposure, the full scope of these effects in humans remains understudied.
Polystyrene microplastics induce gut microbiota dysbiosis and hepatic lipid metabolism disorder in mice
Researchers fed mice two sizes of polystyrene microplastics for five weeks and observed significant disruption of gut bacteria and changes in liver fat metabolism. The microplastics decreased mucus production in the gut and shifted the balance of key bacterial populations at multiple taxonomic levels. The study suggests that microplastic ingestion can trigger gut microbiota imbalance in mammals, which may in turn affect metabolic health.
Effects of frying on microplastics load in fish and implications on health
Researchers investigated the effects of polyethylene microplastics on gut microbiota composition in mice fed a high-fat diet, finding that microplastic exposure altered microbial diversity and increased gut permeability. Co-exposure with a high-fat diet amplified metabolic disruption.
Long-term exposure to polystyrene microplastics promotes HFD-induced obesity in mice through exacerbating microbiota dysbiosis
Researchers found that long-term polystyrene microplastic exposure worsened high-fat-diet-induced obesity in mice by exacerbating gut microbiota dysbiosis, suggesting microplastic ingestion may amplify metabolic disease risk through disruption of the gut microbiome.
Polystyrene microplastics trigger adiposity in mice by remodeling gut microbiota and boosting fatty acid synthesis
Researchers discovered that polystyrene microplastics at relatively low concentrations caused weight gain and excess fat accumulation in mice by reshaping their gut bacteria. The altered gut microbiome boosted fatty acid production, increased appetite, and lowered physical activity in the exposed mice. This finding is significant because it suggests everyday levels of microplastic exposure could contribute to obesity through changes in gut bacteria and metabolism.
Gut microbiome remodeling induced by microplastic exposure in humans
This review synthesizes evidence on how microplastic exposure affects the human gut microbiome, drawing on cross-sectional studies of people exposed through plastic food containers and other sources. Evidence indicates that microplastic exposure is associated with shifts in gut bacteria composition, including increases in certain bacterial groups linked to inflammation. The authors explore potential connections between microplastic-induced changes in gut bacteria and the development of various health conditions.
Polyethylene microplastics affect the distribution of gut microbiota and inflammation development in mice
Researchers fed mice different concentrations of polyethylene microplastics for five weeks and found significant changes in gut bacteria composition and signs of intestinal inflammation. Higher doses increased bacterial diversity and altered the balance of specific bacterial species, while triggering immune responses and inflammation in the colon and duodenum. The study provides evidence that microplastic ingestion can disrupt the gut microbiome and promote intestinal inflammation in mammals.
Perturbation of gut microbiota plays an important role in micro/nanoplastics-induced gut barrier dysfunction
Researchers investigated how micro- and nanoplastics disrupt gut barrier function in mice, finding that different surface chemistries caused varying levels of damage. The study suggests that these plastic particles harm the gut by altering the gut microbiome, which then leads to inflammation and weakening of the intestinal barrier that normally keeps harmful substances out of the body.
Impact of microplastics on the intestinal microbiota: A systematic review of preclinical evidence
Across 28 preclinical studies, microplastics triggered intestinal dysbiosis characterized by increased Firmicutes and Proteobacteria and decreased Bacteroidetes, while increasing gut permeability and elevating pro-inflammatory cytokines including IL-1β, TNF-α, and IL-6.
In vivo exposure of mixed microplastic particles in mice and its impacts on the murine gut microbiome and metabolome
Researchers exposed mice to a mixture of common microplastic types to investigate effects on the gut microbiome and metabolome. The study found that ingested microplastic particles altered gut microbial composition and disrupted metabolic pathways, suggesting that realistic mixed-microplastic exposure may have broader biological effects than single-polymer studies indicate.
Exposure to High-molecular-weight Polyvinyl Chloride Alters Bacterial Diversity in the Gut Microbiota of the Wistar Rat
Researchers exposed Wistar rats to high-molecular-weight polyvinyl chloride microplastics through their diet and measured changes in gut microbiota diversity and composition. PVC microplastic ingestion significantly altered bacterial diversity in the gut microbiome, supporting the hypothesis that microplastic exposure can disrupt intestinal microbial ecology with potential consequences for host health.
Supporting information.
Researchers found that nine weeks of oral polystyrene microplastic administration disrupted hepatic lipid, glucose, and amino acid metabolism in leptin-knockout obese mice while also altering fecal microbiota composition, suggesting that microplastic exposure compounds metabolic dysfunction in obesity.
Long-Term Exposure to Polystyrene Microspheres and High-Fat Diet-Induced Obesity in Mice: Evaluating a Role for Microbiota Dysbiosis.
A long-term mouse study examined how chronic exposure to polystyrene microspheres interacts with a high-fat diet to affect obesity-related outcomes, finding that microplastics worsened metabolic disruption and fat accumulation compared to diet alone. The results raise concern that microplastic exposure may be an environmental factor contributing to the global obesity epidemic.
Oral exposure to polyethylene microplastics of adult male mice fed a normal or western-style diet: impact on gut and gut-liver axis homeostasis
Researchers orally exposed adult male mice to polyethylene microplastics under both normal and high-fat diets, assessing effects on the gastrointestinal tract. The study found that diet influences microplastic-induced gut changes, with greater effects observed in animals fed a western-style high-fat diet.
Intestinal flora variation reflects the short-term damage of microplastic to the intestinal tract in mice
Researchers used gut microbiome analysis to track short-term intestinal damage from compositional microplastics (PE, PET, PP, PS, and PVC) in mice over 7 days of exposure. While standard physiological indicators showed no significant changes, histopathological examination and gut flora analysis revealed intestinal tissue damage and microbial community shifts, suggesting that gut microbiota may serve as a sensitive early indicator of microplastic toxicity.
In vivo exposure of mixed microplastic particles in mice and its impacts on the murine gut microbiome and metabolome
Mice were orally exposed to a mixed polystyrene, polyethylene, and PLGA microplastic suspension for several weeks and gut microbiome composition and metabolomics were analyzed. Mixed microplastic exposure shifted the gut microbiome toward dysbiotic profiles in both male and female mice, with accompanying metabolome changes related to lipid and amino acid metabolism.
Effects induced by polyethylene microplastics oral exposure on colon mucin release, inflammation, gut microflora composition and metabolism in mice
Researchers fed mice polyethylene microplastics for 30 days and found that even low doses reduced protective mucus in the colon, altered inflammation markers, and shifted the composition of gut bacteria. The microplastics increased the ratio of Bacteroides to Firmicutes bacteria and affected metabolic pathways in the gut microbiome. The study suggests that oral microplastic exposure may disrupt intestinal health by modifying the gut microbial community and its metabolism.
Microbiome: A forgotten target of environmental micro(nano)plastics?
This review examines how micro- and nanoplastics affect the microbiome of various organisms, an area that has received less attention than other toxicological endpoints. Researchers found that most studies focused on polystyrene particles and that exposure consistently disrupted microbiome composition, triggered immune responses, and altered enzyme activity across organisms including crustaceans, fish, and mammals. The study highlights the microbiome as an important but often overlooked target of microplastic pollution.