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Big-eaters choking? Macrophages can't stomach microplastics.
Summary
This research summary found that tiny plastic particles (microplastics) can interfere with immune cells called macrophages, which are like the body's cleanup crew that removes dead cells and debris. When microplastics get in the way, these cleanup cells can't do their job properly, which could harm how our organs work. Since microplastics have been found throughout the human body, this suggests they might be disrupting our natural immune defenses in ways we're just beginning to understand.
Microplastics are detectable in diverse human tissues, yet their biological impact remains unclear. In this issue of Immunity, Codo et al. dissect the mechanisms involved and find that polystyrene microplastics inhibit tissue-resident phagocyte clearance of dead cells, resulting in concerning consequences for organ function.