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Current Insights into Potential Effects of Micro-Nanoplastics on Human Health by in-vitro Tests
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This review summarizes current evidence on how micro- and nanoplastics may affect human health, based on in-vitro laboratory studies. The research indicates that these tiny plastic particles can cause oxidative stress and inflammatory responses in human cells, and that their effects vary depending on size, shape, polymer type, and chemical additives present.
Humans are exposed to micro and nanoplastics (MNPLs) through inhalation, ingestion and, to a lesser extent, dermal contact. In recent years, new insights indicate the potential of MNPLs to cause damages to human health. Particle toxicity can include oxidative stress, inflammatory lesions, and then increased internalization or translocation through tissues. On the other hand, plastic additives are used in plastic particles, once internalized, can release toxic substances. It is noteworthy that the potential effects of MNPLs encompass a wide range of polymers and chemical additives, showing various physicochemical and toxicological properties, and the size, shape and surface properties are other variables influencing their effects. In spite of the research carried out recently, MNPLs research is in its early stages, and further investigation is required. In this review article, the knowledge of human exposure routes and the recent results on the toxicological effects of MNPLs in human health are presented and discussed. Finally, the current limitations and the main gaps in the body of knowledge are summarised.
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This review summarizes laboratory cell-culture studies examining the potential health impacts of microplastics and nanoplastics on human cells. Researchers found evidence that these particles can cause oxidative stress, inflammation, and disruption to normal cell functions across multiple cell types. The study suggests that while more research is needed, the in vitro evidence indicates microplastics and nanoplastics have the potential to affect human health through several biological pathways.
Cellular responses to micro- and nanoplastics exposure: mechanisms and pathophysiological implications
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This review summarizes existing research on how tiny plastic particles interact with cells in lab and animal studies, finding repeated signs of cell stress, including damage to cell structures and inflammation. Studies also detected plastic material in human blood and tissue samples, but the review states this does not prove the particles cause specific diseases.
Micro/nanoplastics and human health: A review of the evidence, consequences, and toxicity assessment
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This review summarizes evidence that micro and nanoplastics have been found in multiple human organs and body fluids, where they can alter cell shape, damage mitochondria, reduce cell survival, and cause oxidative stress. The health effects depend heavily on the size, shape, and chemical makeup of the particles, with smaller nanoplastics generally posing the greatest risk because they penetrate deeper into tissues. The review provides a framework for assessing how dangerous different types of plastic particles are to human health.
Adverse Outcome Phenomena and Toxicity Mechanisms of Micro and Nanoplastics in Human Health
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This review examines the growing evidence that micro- and nanoplastics can enter the human body through food, water, and air, and may contribute to harmful biological effects. Researchers found that these tiny particles can trigger oxidative stress, inflammation, and disruption of hormonal and immune systems in laboratory studies. The study highlights the need for a unified research approach to better understand how microplastic exposure may affect long-term human health.
Cytotoxic Effects of Microplastics on Human Cells
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This study reviewed and tested the cytotoxic effects of microplastics on human cells, finding that microplastic particles can cause cell damage, inflammation, and oxidative stress at relevant concentrations. The results support growing concern that microplastics ingested or inhaled by humans may pose direct health risks at the cellular level.
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