We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Three-dimensional tracking of microplastics in zebrafish using micro-computed tomography
AI summary Read the abstract
Scientists used a special 3D scanning technique (like a CT scan for fish) to watch, in real time, how tiny plastic particles move through a zebrafish's gut after being eaten—without having to cut the fish open. They found the microplastics travel toward the back of the intestine before being eliminated, and this new tracking method could help researchers better understand where plastics linger in the body and what harm they might cause. While this study was done in fish, it offers a promising tool for future research into how ingested microplastics behave inside living creatures, including potentially humans.
Understanding the fate of microplastics after ingestion is essential for assessing their biological effects, yet tracking these particles within organisms remains a major analytical challenge. The conventional detection methods often lack the information about spatial distribution due to destructive sample preparation methods. This study presents a novel, non-destructive micro-computed tomography (microCT) methodology for realistic three-dimensional tracking of microplastics in zebrafish. Using a feeding-based exposure design, ingestion, distribution, and elimination of aged polyethylene microplastics within the gastrointestinal tract were visualized over time. Two complementary exposure approaches, continuous and short-term, were applied to simulate environmentally relevant conditions and to assess microplastic movement through the gut. The results confirmed voluntary ingestion of microplastics and revealed their progressive passage toward the posterior intestine, allowing visualization of elimination kinetics and estimation of particle retention within different gut regions. Continuous exposure reflected cumulative ingestion patterns typical of persistent environmental conditions, whereas short-term exposure provided clearer resolution of microplastic transit dynamics. The developed methodology provides a realistic, reproducible, and non-destructive framework for tracking microplastics within intact aquatic organisms. It enables direct visualization of post-ingestion processes and supports future research on microplastic post-ingestion behaviour, revealing where microplastics accumulate, consequently allowing to better understand the potential biological effects in ecotoxicological contexts.
More Papers Like This
Advancing microplastic detection in zebrafish with micro computed tomography: A novel approach to revealing microplastic distribution in organisms
AI summary Read the abstract
Researchers tested a new approach using X-ray micro-computed tomography (microCT) to detect and map microplastics inside zebrafish in three dimensions. The non-destructive imaging technique successfully identified polyethylene particles throughout the gut and revealed how their distribution changed over time. This method offers a promising alternative to traditional destructive techniques for studying how microplastics move through living organisms.
Near-Infrared-II In Vivo Visualization and Quantitative Tracking of Micro/Nanoplastics in Fish
AI summary Read the abstract
Scientists developed a new near-infrared imaging technique to track micro- and nanoplastics inside living zebrafish in real time, overcoming limitations of previous detection methods. They found that both sizes of plastic particles accumulated mainly in the gut, with microplastics concentrating more in the front sections and nanoplastics distributing more evenly. This tracking tool helps researchers better understand how plastic particles move through and accumulate in living organisms, which is essential for assessing the risks of microplastic exposure.
Label-free 4D confocal Raman imaging enabling in vivo multiplex identification of microplastics in zebrafish
AI summary Read the abstract
Scientists created a new imaging technique that can track five different types of microplastics inside living zebrafish at the same time, without needing to add dyes or chemical tags that could alter the results. They found that different plastic types build up in the gut at different rates, with noticeable accumulation after just 8 hours of exposure, a tool like this could help researchers better understand how the mix of plastics we're exposed to in real life actually moves through and affects living bodies, which matters since humans regularly ingest microplastics from food and water.
Visible Combined Near-Infrared in Situ Imaging Revealed Dynamic Effects of Microplastic Fibers and Beads in Zebrafish
AI summary Read the abstract
Researchers used a combined visible and near-infrared imaging technique to track microplastic fibers and beads in live zebrafish in real time. They observed that microplastics were quickly ingested and could be retained briefly in the digestive tract before being eliminated. The study provides new insights into the dynamic behavior of microplastics inside living organisms and whether any tissue damage that occurs during transit can be reversed.
Quantitative assessment and monitoring of microplastics and nanoplastics distributions and lipid metabolism in live zebrafish using hyperspectral stimulated Raman scattering microscopy
AI summary Read the abstract
Researchers developed a new imaging technique to watch microplastics and nanoplastics accumulate in live zebrafish in real time, without needing dyes or labels. They found that these tiny plastic particles built up in the fish's digestive system and disrupted fat metabolism, providing direct visual evidence of how micro- and nanoplastics can interfere with basic biological processes.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.