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Oral Exposure to Polystyrene Microplastics of Mice on a Normal or High-Fat Diet and Intestinal and Metabolic Outcomes.

Takuro OkamuraYoshitaka HashimotoYuka HasegawaYoshitaka HashimotoSaori MajimaTakafumi SenmaruEmi UshigomeNaoko NakanishiMai AsanoMasahiro YamazakiRyoichi SasanoYuki NakanishiHiroshi SenoHirohisa TakanoMichiaki Fukui
Published in: Environmental health perspectives (2023)
Our findings suggest that in this study, MP induced metabolic disturbances, such as diabetes and NAFLD, only in mice fed a high-fat diet. These findings suggest that LGS might have been triggered by HFD, causing MPs to be deposited in the intestinal mucosa, resulting in inflammation of the intestinal mucosal intrinsic layer and thereby altering nutrient absorption. These results highlight the need for reducing oral exposure to MPs through remedial environmental measures to improve metabolic disturbance under high-fat diet conditions. https://doi.org/10.1289/EHP11072.
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