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Abstract Tu0030: Carotid Plaque Microplastics are Associated with Clinical Symptoms and Mesenchymal Stem Cell-Macrophage Immunomodulatory Effects
Summary
Tiny plastic particles (called microplastics) can build up in the fatty plaque that clogs neck arteries, and this study found that higher levels of these plastics were linked to patients actually having stroke-like symptoms, not just silent artery blockages. The researchers also looked at how the body's stem cells and immune cells respond to these plastic deposits, suggesting a possible reason why plastic buildup might make plaque more dangerous. This adds to growing concerns that the microplastics we're exposed to daily may play a real role in heart and blood vessel disease, though more research is needed to confirm exactly how.
Micronanoplastics (MNPs) in human tissues are a recently recognized fact and the clinical effects have not yet been studied. Recent reports in asymptomatic carotid stenosis indicate an association between atherosclerotic plaque MNPs, immune cell deposition and poor long-term clinical outcomes. Mesenchymal stem cells (MSCs) modulate immune signaling and plaque stability. A mechanism for how MNPs affect atherosclerotic lesions has yet to be proposed and the association of MNPs with carotid symptom status as well as gene expression has not been investigated.