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Impact of microplastics and nanoplastics on liver health: Current understanding and future research directions
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This review summarizes what scientists know about how micro- and nanoplastics affect the liver, which is one of the first organs exposed because it processes everything absorbed from the gut. The particles trigger oxidative stress, disrupt energy metabolism, cause cell death, and promote inflammation, and may contribute to conditions like fatty liver disease and liver fibrosis. The paper also highlights how plastics can disturb the gut microbiome, which communicates with the liver through the gut-liver axis and may amplify liver damage.
With continuous population and economic growth in the 21st century, plastic pollution is a major global issue. However, the health concern of microplastics/ nanoplastics (MPs/NPs) decomposed from plastic wastes has drawn public attention only in the recent decade. This article summarizes recent works dedicated to understanding the impact of MPs/NPs on the liver-the largest digestive organ, which is one of the primary routes that MPs/NPs enter human bodies. The interrelated mechanisms including oxidative stress, hepatocyte energy re-distribution, cell death and autophagy, as well as immune responses and inflammation, were also featured. In addition, the disturbance of microbiome and gut-liver axis, and the association with clinical diseases such as metabolic dysfunction-associated fatty liver disease, steatohepatitis, liver fibrosis, and cirrhosis were briefly discussed. Finally, we discussed potential directions in regard to this trending topic, highlighted current challenges in research, and proposed possible solutions.
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This review describes how microplastics can damage the liver through the gut-liver axis: they first disrupt the gut's protective barrier and beneficial bacteria, allowing harmful substances to leak through the weakened intestinal wall into the bloodstream and travel to the liver. Once there, these substances cause inflammation, metabolic problems, and oxidative stress, offering a new explanation for how microplastic exposure could lead to liver disease.
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Researchers reviewed emerging evidence that microplastics and nanoplastics accumulate in human liver tissue at increasing concentrations over the past decade, trigger oxidative stress, fibrogenesis, and inflammation in cell and animal models, and may carry microbial pathogens and endocrine-disrupting chemicals, introducing the concept of plastic-induced liver injury as a new focus for environmental hepatology.
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This review examines emerging evidence linking micro- and nanoplastic exposure to liver disease, including metabolic dysfunction-associated liver disease, cirrhosis, and liver cancer. Researchers found that these particles may contribute to liver damage through oxidative stress, inflammation, and disruption of metabolic pathways. The study highlights the need for further research into how environmental plastic contamination may be influencing the rising rates of liver disease worldwide.
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This review summarizes existing research on how microplastics damage the liver, which is a key organ for filtering toxins from the body. Studies show that microplastics can cause liver tissue damage, trigger cell death, and disrupt fat metabolism, with smaller particles and longer exposure causing worse effects. The findings highlight the liver as a particularly vulnerable organ because it accumulates microplastics that enter the body through food and water.
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This review examines how nanoplastics, particles smaller than 100 nanometers, accumulate in and damage the liver. Researchers found that nanoplastics enter the body through the respiratory and digestive systems, reach the liver via the bloodstream, and can disrupt the gut-liver axis and gut microbiome. The evidence suggests that liver damage from nanoplastics may trigger cascading effects on other organs, highlighting the need for further research on these less visible pollutants.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.