Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 756, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2020.144010
Keywords
Microplastics; Nanoplastics; Environmental exposures; Biomarkers; Health effects
Categories
Funding
- Intramural CDC HHS [CC999999] Funding Source: Medline
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Research has shown that plastic debris can degrade into small particles that are able to be transported through air, water, and food, entering and exiting the human body and translocating between internal organs. Health effects on various systems have been reported in response to elevated particle or fiber exposures. However, there are data gaps in relating exposure to health effects.
Plastic debris have been shown to degenerate to particle sizes that can be transported in air, water, and food. Small particles are documented to enter and exit our bodies and translocate to and from some internal organs. Health effects on respiratory, hepatic, immune, and gastrointestinal systems have been reported in humans and other mammals in response to elevated particle or fiber exposures. These health effects differed by plastic type and size, and there was evidence of dose response for a few health endpoints. We conducted a systematic word search and reviewed published literature to identify microplastic and nanoplastic studies that quantified exposure via the ingestion, inhalation, and subcutaneous absorption (not dermal) exposure pathways; identified translocation, internal dose, and associations with health effects and markers related to exposures to specific sizes and types of plastics. We identified the data gaps in relating exposure data to health effects and biomarkers, most notably the lack of characterization of plastic particles and fibers smaller than 10 mu m in most media. Published by Elsevier B.V.
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