Nanoplastic Impact on the Gut-Brain Axis: Current Knowledge and Future Directions

Area of Science:

• Environmental Science
• Toxicology
• Neuroscience

Background:

• Plastic pollution poses a significant environmental burden, affecting various species and human health through ingestion and inhalation.
• Synthetic materials degrade into micro- and nanoparticles, which readily interact with biological systems.
• Nanoplastic accumulation in organism tissues, including the gut and brain, raises concerns about inter-organ communication.

Purpose of the Study:

• To review the existing data on the influence of nanoplastic exposure on the gut-brain axis.
• To explore the potential health impacts of nanoplastic interactions with digestive and neural pathways.

Main Methods:

• Literature review of studies investigating nanoplastic effects on biological systems.
• Analysis of reported outcomes related to the digestive and nervous systems following nanoplastic exposure.

Main Results:

• Evidence indicates nanoplastic exposure affects both the digestive and nervous systems.
• Reported effects include alterations in gut microbiota, increased intestinal permeability, oxidative stress, inflammation, neurotoxicity, and behavioral changes.

Conclusions:

• Nanoplastic exposure presents potential threats to the gut-brain axis functioning.
• Urgent research is needed to fully understand the risks associated with ubiquitous plastic presence and its impact on human health.