Short-term exposure to traffic-related micro- and nanoplastics associated with immature granulocyte mobilization and tissue repair markers

Short-term exposure to traffic-related micro- and nanoplastics associated with immature granulocyte mobilization and tissue repair markers.

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Researchers had 23 healthy adults spend four hours at three outdoor sites with differing traffic levels and found that short-term exposure to traffic-related micro- and nanoplastics (primarily tire wear) was associated with subtle immune changes the next morning, including markers suggesting mobilization of immature white blood cells, pointing to delayed resolution-phase rather than acute inflammatory responses.

Assessment of airborne micro- and nanoplastics exposure and health hazards of oxidative DNA damage in populations living in traffic-congested areas

Tread lightly: immuno-toxicological health effects of traffic-related polymers in healthy adults.

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Researchers studied the immunotoxicological effects of traffic-related micro- and nanoplastics in commuters exposed to tire wear particle emissions. Elevated exposure to airborne tire wear polymers was associated with measurable changes in immune cell profiles.

Traffic-related micro- and nanoplastics in air increase total and differential white blood cell counts in healthy young adults

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Researchers exposed healthy young adults to traffic-related air at three different locations and measured changes in their white blood cell counts. They found that exposure to airborne micro- and nanoplastics from tire wear was significantly associated with increases in total and differential white blood cell counts, indicating an immune response. The study provides some of the first evidence in humans that short-term exposure to traffic-related plastic particles in the air can trigger measurable changes in the immune system.

Tread lightly: immuno-toxicological health effects of traffic-related polymers in healthy adults.

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Researchers studied health effects in commuters exposed to traffic-related micro- and nanoplastics, primarily from tire wear, comparing outcomes between high-exposure and low-exposure groups. The study found evidence of immunotoxicological effects linked to airborne polymer particle exposure from road traffic.