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Microplastics in metabolic dysfunction-associated steatotic liver disease: An emerging threat to liver health
Summary
This review examined emerging evidence linking microplastic exposure to the development and progression of metabolic dysfunction-associated steatotic liver disease (MASLD, formerly NAFLD). The authors found that microplastics detected in liver tissue can exacerbate hepatic inflammation, lipid accumulation, and oxidative stress through multiple mechanisms, adding a novel environmental risk factor to MASLD pathogenesis.
Metabolic dysfunction-associated steatotic liver disease (MASLD), formerly referred to as non-alcoholic fatty liver disease, is a major cause of end-stage liver disease worldwide. Numerous studies have demonstrated that the liver is predominantly influenced by environmental and lifestyle risk factors that lead to obesity and diabetes, excessive alcohol consumption, and exposure to environmental pollutants. Microplastics (MPs) are a significant global concern, having been detected in human blood, lungs, kidneys, and liver, and may have deleterious effects on these tissues. Although the effects of MP exposure on the liver have only been partially elucidated, further research is necessary to integrate the direct and extrahepatic effects of MPs on the pathogenesis of MASLD. This review offers a comprehensive analysis of the impact of MPs on hepatic metabolism, including their effects on mitochondrial homeostasis and the endocrine system, with potential implications for the progression of MASLD.