We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Insights into the potential carcinogenicity of micro- and nano-plastics.
Summary
This review examined existing evidence on the carcinogenic potential of micro- and nano-plastics, finding studies demonstrating genotoxicity, oxidative DNA damage, disruption of cell signaling, and tumor-promoting effects, while noting that direct human carcinogenicity data remain limited and mechanistic pathways require further investigation.
There is a growing concern regarding the potential health effects that continuous exposure to environmental micro- and nano-plastics (MNPLs) may cause on humans. Due to their persistent nature, MNPLs may accumulate in different organs and tissues and may induce in the long term the development of cancer. The present study aimed to review the existing literature on the carcinogenic potential of MNPLs. As studies directly assessing carcinogenicity were expected to be scarce, studies dealing with indirect outcomes associated with the carcinogenic process were considered in the literature search. Of the 126 studies screened, 19 satisfied the inclusion criteria. Besides, 7 additional cross-referenced articles, identified through a careful reading of the previously selected papers, also met the inclusion criteria and, consequently, were included in the review. Most of the selected studies were performed using in vitro models whereas about 40% of the studies were done in rodents, although none of them included a 2-year carcinogenicity assay. Most of the reviewed studies pointed out the potential of MNPLs to induce inflammation and genotoxicity, the latter being recognized as a strong predictor of carcinogenicity. These, along with other important findings such as the MNPLs' ability to accumulate into cells and tissues, or their capacity to induce fibrosis, may suggest an association between MNPLs exposures and the carcinogenic potential. Nevertheless, the limited number of available studies precludes reaching clear conclusions. Therefore, this review also provides several recommendations to cover the current knowledge gaps and address the future evaluation of the MNPLs' carcinogenic risk.
Sign in to start a discussion.
More Papers Like This
Rising Concern About the Carcinogenetic Role of Micro‐Nanoplastics
This review raised concerns about the carcinogenic potential of micro- and nanoplastics, synthesizing evidence that these particles can induce DNA damage, oxidative stress, and cellular transformation. It called for accelerated research into whether microplastic exposure increases human cancer risk.
Do microplastics (MPs) and nanoplastics (NPs) directly contribute to human carcinogenesis?
This review examines whether microplastics and nanoplastics could directly contribute to cancer development in humans. Evidence from lab and animal studies shows these particles can cause DNA damage, chronic inflammation, oxidative stress, and disrupt important cancer-related signaling pathways. While a direct causal link to human cancer has not been proven yet, the review argues that microplastics should be considered potential cancer-promoting agents that warrant urgent further research.
The Relationship Between Microplastics and Nanoplastics with Cancer: An Emerging Health Concern
This review explores the emerging relationship between micro- and nanoplastic exposure and cancer risk in humans. Researchers summarized evidence suggesting that microplastics can carry carcinogenic substances and may trigger inflammatory and oxidative stress pathways linked to tumor development. The study highlights that while early evidence raises concern, more research is needed to establish clear causal connections between plastic particle exposure and specific cancer types.
Microplastics as emerging carcinogens: from environmental pollutants to oncogenic drivers
This review examines growing evidence that microplastics and nanoplastics may play a role in cancer development, with these particles found in human tumor tissues from the lungs, colon, stomach, breast, and other organs. The particles appear to promote cancer through chronic inflammation, oxidative stress, DNA damage, and disruption of key cancer-related signaling pathways. While direct proof of causation in humans is still lacking, the accumulating evidence from lab studies, animal experiments, and human tissue analysis suggests microplastics deserve serious attention as potential contributors to cancer risk.
Derivatives of Plastics as Potential Carcinogenic Factors: The Current State of Knowledge
Researchers reviewed the current evidence on micro- and nanoplastics as potential carcinogenic substances that may cause DNA damage. The review found correlations between exposure to micro- and nanoplastic particles and the onset of several cancers, though the study notes that more research is needed to establish clear causal relationships between plastic particle exposure and cancer development.