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61,005 resultsShowing papers similar to Nanoplastic-induced vascular endothelial injury and coagulation dysfunction in mice
ClearPolystyrene microplastic particles induce endothelial activation
Researchers found that polystyrene microplastic particles triggered inflammatory activation in endothelial cells lining blood vessels, increasing adhesion molecule expression and promoting leukocyte attachment. In mice, microplastic exposure led to elevated inflammatory cytokine and adhesion molecule expression in the aorta. The study identifies microplastics as a potential new environmental risk factor for vascular inflammation.
Interaction of polystyrene nanoplastics with human fibrinogen
Researchers found that polystyrene nanoplastics with different surface modifications disrupted the structure of human fibrinogen, a key blood clotting protein, in a dose-dependent manner. The study suggests that nanoplastics entering the bloodstream could interfere with protein function, raising concerns about the potential biological consequences of nanoplastic exposure in humans.
Polystyrene micro-/nanoplastics induced hematopoietic damages via the crosstalk of gut microbiota, metabolites, and cytokines
Researchers exposed mice to polystyrene micro- and nanoplastics and found that the particles caused damage to the blood-forming system through disruption of gut bacteria, metabolic changes, and inflammatory signaling. Smaller nanoplastics caused more severe effects than larger microplastics, altering gut microbial communities and triggering systemic inflammation. The study reveals a previously unknown pathway by which ingested plastic particles may harm the body's ability to produce healthy blood cells.
Amino-modified polystyrene nanoplastics induce endothelial pyroptosis and pro-atherogenic cellular responses
Researchers found that amino-modified polystyrene nanoplastics, particularly 20-nanometer particles, triggered pyroptosis, a form of inflammatory cell death, in human blood vessel endothelial cells. This cell damage promoted the recruitment, adhesion, and lipid accumulation of immune cells, mimicking early stages of atherosclerosis development. The study suggests that surface chemical modifications of nanoplastics can significantly influence their toxicity to the cardiovascular system.
Amine-modified nanoplastics promote the procoagulant activation of isolated human red blood cells and thrombus formation in rats
Researchers investigated whether polystyrene nanoplastics promote blood coagulation activity in human red blood cells. The study found that amine-modified 100 nm nanoplastics were taken up by red blood cells, caused morphological changes, induced phosphatidylserine externalization, and generated microvesicles, suggesting that certain nanoplastics may promote procoagulant activity and potentially contribute to thrombus formation.
Environmental microplastic and nanoplastic: Exposure routes and effects on coagulation and the cardiovascular system
This review explores how environmental microplastic and nanoplastic particles may affect blood coagulation and the cardiovascular system in humans. Researchers summarized evidence suggesting that plastic particles can enter the body through ingestion, inhalation, and skin contact, potentially triggering inflammatory responses in blood vessels. The study highlights the need for more research on how chronic exposure to these tiny plastic particles may contribute to cardiovascular health risks.
Anionic nanoplastic exposure induces endothelial leakiness
Researchers discovered that nanoplastics made of anionic polystyrene and poly(methyl methacrylate) can disrupt the junctions between blood vessel cells, causing increased vascular leakiness. This effect was dose-dependent and driven by biophysical interactions rather than typical cell toxicity like oxidative stress or cell death. The findings reveal a previously unknown way that nanoplastics could affect the body's circulatory system by making blood vessels more permeable.
Effects of polystyrene nanoplastics on endothelium senescence and its underlying mechanism
Researchers found that polystyrene nanoplastics can promote premature aging of endothelial cells that line blood vessel walls, using porcine coronary artery cells as a model. The study suggests that nanoplastic exposure may affect cardiovascular health by accelerating cellular senescence in the endothelium, a process linked to vascular dysfunction.
Amino-Functionalized Polystyrene Nano-Plastics Induce Mitochondria Damage in Human Umbilical Vein Endothelial Cells
Researchers found that amino-functionalized polystyrene nanoplastics can damage mitochondria in human umbilical vein endothelial cells, which line blood vessels. The study suggests that nanoplastics small enough to enter the body through the food chain may pose risks to the cardiovascular system by disrupting cellular energy production and triggering oxidative stress in vascular cells.
Hazard assessment of nanoplastics is driven by their surface-functionalization. Effects in human-derived primary endothelial cells
Researchers tested three types of polystyrene nanoplastics with different surface coatings on human blood vessel cells and found that the surface chemistry dramatically affected their toxicity. Positively charged nanoplastics were the most harmful, killing cells, while all types caused DNA damage and oxidative stress. This study shows that as plastics break down in the environment and their surface properties change, their potential to harm the cardiovascular system may change in unpredictable ways.
PB1065 Microvesicles Display Opposite Coagulolytic Balances According to Their Cellular Origin and Activation Status
Polystyrene microplastics activated human vascular endothelial cells, upregulating inflammation markers ICAM-1 and VCAM-1, and promoted larger and denser blood clot formation when added to whole blood perfused over collagen at concentrations found in human plasma. These results raise concern that microplastics circulating in human blood could increase the risk of thrombosis and cardiovascular events.
Polystyrene nanoplastics enhance thrombosis through adsorption of plasma proteins
Researchers found that polystyrene nanoplastics can enter the bloodstream and increase the risk of blood clots by adsorbing key clotting proteins, particularly coagulation factor XII and plasminogen activator inhibitor-1. This protein-adsorption mechanism was confirmed through multiple analytical approaches. The discovery of this thrombosis-promoting pathway is concerning because it suggests that nanoplastic exposure could increase cardiovascular risks like stroke and heart attack.
Effects of micro- and nanoplastics on blood cells in vitro and cardiovascular parameters in vivo, considering their presence in the human bloodstream and potential impact on blood pressure
This review examines evidence that micro- and nanoplastics can enter the human bloodstream and interact with blood cells, with plastic particles already detected in human blood, blood clots, and artery plaques. While direct evidence linking microplastics to blood pressure changes in humans is still lacking, animal studies and the mechanisms identified -- including blood vessel damage and inflammation -- suggest cardiovascular effects are plausible.
Micro- and nanoplastics: A new cardiovascular risk factor?
This review examines the growing evidence that micro- and nanoplastics may pose risks to the heart and blood vessels. Studies in animals and cell cultures show that these tiny plastic particles can enter the bloodstream, trigger inflammation, promote blood clotting, and damage blood vessel walls. While human data is still limited, the review suggests that micro- and nanoplastic exposure should be considered a potential new risk factor for cardiovascular disease.
Effect of Polystyrene Microplastics on Tube Formation and Viability of Endothelial Cells
Lab experiments found that polystyrene microplastics impaired the ability of human endothelial cells (which line blood vessels) to form tube-like structures and reduced cell viability at higher concentrations. This is early evidence that microplastics entering the bloodstream may damage vascular cells, with potential implications for cardiovascular health.
Circulating Microplastics as Acute Triggers of Platelet Activation and Coagulation: Implications for Cardiovascular Risk
Researchers exposed human platelets to nanoplastics and found direct activation of platelet aggregation and coagulation pathways at environmentally relevant concentrations. The results suggest that circulating microplastics and nanoplastics could act as acute triggers of thrombosis, with implications for cardiovascular disease risk.
Systematic toxicity evaluation of polystyrene nanoplastics on mice and molecular mechanism investigation about their internalization into Caco-2 cells
Researchers fed mice polystyrene nanoplastics (about 100 nm) for 28 days and found the particles accumulated in multiple organs including the spleen, lungs, kidneys, intestines, testes, and brain. The nanoplastics caused cell death, inflammation, and tissue damage in these organs, as well as disrupted fat metabolism and blood cell counts. This study demonstrates that ingested nanoplastics can spread throughout the body and cause widespread harm, raising concerns about long-term human exposure.
Noxic effects of polystyrene microparticles on murine macrophages and epithelial cells
Polystyrene microparticles induced cytotoxic effects in murine macrophages and intestinal epithelial cells at higher concentrations, triggering cell membrane damage, inflammatory cytokine release, and reduced phagocytic function, with smaller particles generally causing greater harm than larger ones at equivalent mass doses.
Size-dependent effects of polystyrene nanoplastics on autophagy response in human umbilical vein endothelial cells
Researchers studied how polystyrene nanoplastics of two different sizes affect human umbilical vein endothelial cells, focusing on a cellular cleanup process called autophagy. They found that smaller nanoplastics were taken up by cells more readily and caused greater disruption to autophagy function than larger particles. The study suggests that nanoplastic size is a critical factor in determining cardiovascular health risks, as these particles can impair the cells lining blood vessels.
Evaluation of toxicity of polystyrene microplastics under realistic exposure levels in human vascular endothelial EA.hy926 cells
Researchers exposed human vascular endothelial cells to polystyrene microplastics at concentrations comparable to levels detected in human blood. They found that the microplastics caused oxidative stress, reduced antioxidant defenses, and triggered apoptosis in the vascular cells. The study suggests that microplastics circulating in the bloodstream at realistic concentrations may contribute to vascular damage by impairing cellular protective mechanisms.
In vivo and In vitro assessment of the retinal toxicity of polystyrene nanoplastics
Researchers found that orally ingested polystyrene nanoplastics can reach the mouse retina within just two hours and, after prolonged exposure, damage the blood-retina barrier, cause oxidative stress, and trigger cell death in retinal tissue. Tests on human retinal cells confirmed similar toxic effects, suggesting that nanoplastic exposure through food and water could pose previously unrecognized risks to eye health.
Kinetics and toxicity of nanoplastics in ex vivo exposed human whole blood as a model to understand their impact on human health
Researchers exposed human whole blood to five types of nanoplastics and found that immune cells, especially monocytes, readily absorbed the particles, triggering oxidative stress and inflammatory responses. Different plastic types caused different effects: some triggered blood clotting, others caused red blood cell damage, and PLA (a "biodegradable" plastic) was among the most reactive. This study provides direct evidence that nanoplastics reaching the human bloodstream can disrupt immune cells, blood clotting, and inflammation.
Analysis of Biodistribution and in vivo Toxicity of Varying Sized Polystyrene Micro and Nanoplastics in Mice
This study found that smaller plastic particles spread more widely through the bodies of mice and caused more organ damage than larger ones, particularly in the liver, kidneys, and heart. Nanoplastics (under 1 micrometer) were especially concerning because they crossed biological barriers more easily than microplastics. The results suggest that the tiniest plastic particles in our environment may pose the greatest health risks.
The toxic effects of polystyrene microplastic/nanoplastic particles on retinal pigment epithelial cells and retinal tissue
This study found that polystyrene micro and nanoparticles damaged retinal cells in both lab dishes and live mice, causing oxidative stress, mitochondrial dysfunction, and inflammation in the eye. Nanoparticles were able to penetrate into cells and trigger more severe damage than microparticles. With growing use of contact lenses and eye treatments that may introduce plastic particles, these findings raise concerns about microplastic effects on eye health.