Effects of microplastics and nanoplastics on the kidney and cardiovascular system

Microplastics and nanoplastics are ubiquitous environmental pollutants that contaminate air, food and water supplies, resulting in widespread human exposure and potential health risks. Varying concentrations of particulate plastics have been identified in human tissues and body fluids, including the heart, kidney, liver, brain, blood and urine. Studies in animal models and human cells have reported that particulate plastics can induce oxidative stress, cell death and inflammation as well as disrupt metabolism and immune function. They have also been shown to have toxic effects on kidney and cardiovascular cells, which are exacerbated by the presence of other environmental contaminants such as heavy metals. Patients with kidney failure might be at risk of increased exposure to particulate plastics during dialysis. Furthermore, clinical evidence suggests that particulate plastic exposure is a risk factor for cardiovascular disease. Approaches to mitigating such exposure include degradation via abiotic and biotic processes, improved waste management and water filtration approaches and use of alternative materials. Further research into the fate, toxicity and health consequences of particulate plastics is imperative to inform strategies to address this escalating environmental and health concern.