Polystyrene Microplastics Exacerbates Experimental Colitis in Mice Tightly Associated with the Occurrence of Hepatic Inflammation

Polydisperse polystyrene microplastics exacerbate colitis through gut microbiota-butyrate-PPARγ axis disruption in mice

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This study demonstrates that exposure to polydisperse polystyrene microplastics worsens colitis symptoms in experimental animal models. The microplastics appear to aggravate intestinal inflammation by disrupting gut barrier function and amplifying immune responses. These results raise concern about microplastic exposure as a potential risk factor for inflammatory bowel conditions.

Impact of Microplastics on the Severity of Intestinal Inflammation in Mice

Polystyrene microplastics exacerbate experimental colitis in mice tightly associated with the occurrence of hepatic inflammation

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Researchers found that polystyrene microplastics worsened experimentally induced colitis in mice, causing greater intestinal inflammation, reduced mucus secretion, and increased gut permeability. The study also revealed that microplastic exposure in mice with colitis increased the risk of secondary liver inflammation, suggesting that individuals with pre-existing gut conditions may be more vulnerable to microplastic exposure.

Influence of Microplastics on Morphological Manifestations of Experimental Acute Colitis

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Researchers fed polystyrene microplastics to mice for six weeks and found that healthy mice developed changes in their colon lining, including altered mucus composition and immune cell populations. When mice with experimentally induced colitis also consumed microplastics, their intestinal inflammation was significantly more severe. The study suggests that microplastic exposure may worsen inflammatory bowel conditions.

Proinflammatory properties and lipid disturbance of polystyrene microplastics in the livers of mice with acute colitis

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Researchers studied the effects of polystyrene microplastics on the livers of mice fed a high-fat diet and found that the particles triggered significant inflammatory responses and disrupted lipid metabolism. The microplastics worsened fat accumulation in the liver and activated inflammatory signaling pathways. The findings suggest that microplastic exposure combined with a high-fat diet may amplify liver damage and metabolic disturbances.