Biodegradable microplastics found to affect fish blood cells

Researchers studying the environmental impact of biodegradable plastics have discovered that these materials can pose significant risks to aquatic life. A study published in the journal Environmental Chemistry and Ecotoxicology examined how polylactic acid (PLA) microplastics affect the blood of rainbow trout.

Using single-cell RNA sequencing and fluorescent labeling, researchers Difei Tong and Wen-Xiong Wang observed that PLA microplastics are associated with changes in the balance and activity of various blood cell types, specifically those involved in immune defense. The study also suggests that exposure may interfere with how blood cells communicate with one another.

Findings indicate that the risks may increase when plastic particles are aged under simulated sunlight, potentially altering their interaction with biological systems.