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Ecotoxicological impacts of microplastics to gut microbiota: Response mechanism, challenges and environmental sustainability-A review

Ecotoxicology and Environmental Safety 2025 5 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 63 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Huijuan Liu Yang Liu, Yang Liu, Yang Liu, Yang Liu, Xianfei Huang, Yang Liu, Yang Liu, Yang Liu, Yang Liu, Yang Liu, Yang Liu, Xianliang Wu, Xianliang Wu, Xianliang Wu, Yang Liu, Xianliang Wu, Bin Lu, Huijuan Liu Yang Liu, Yang Liu, Yang Liu, Yang Liu, Yang Liu, Yang Liu, Yang Liu, Yang Liu, Yang Liu, Xianliang Wu, Xianliang Wu, Yang Liu, Xianliang Wu, Huijuan Liu, Yang Liu, Yang Liu, Yang Liu, Yang Liu, Yang Liu, Huijuan Liu Xianliang Wu, Xianfei Huang, Xianliang Wu, Yang Liu, Yang Liu, Xianfei Huang, Yang Liu, Yang Liu, Yang Liu, Xianfei Huang, Yang Liu, Yang Liu, Xianfei Huang, Xianfei Huang, Yang Liu, Xianfei Huang, Yang Liu, Yang Liu, Xianfei Huang, Yang Liu, Xianfei Huang, Huijuan Liu

Summary

This review summarizes how microplastics affect gut bacteria in fish, mice, and earthworms after being swallowed. Microplastics can change the balance of gut microbes and reduce their helpful functions, leading to digestive problems, slower growth, and weakened immunity. Since humans are exposed to microplastics through food and water, these findings raise concerns that our own gut health could be similarly affected.

Body Systems

Digestive Reproductive

Models

Invertebrate other Mouse

Microplastics (MPs) entering the gastrointestinal tract of hosts through various pathways alter the community structure and metabolic activity of the gut microbiota, thereby affecting the normal physiological functions of the host. However, there is still huge knowledge gap in the effects of MPs on gut microbiota of organisms. This review mainly summarized comprehensively the response mechanism of gut microbiota of three typical organisms, including aquatic animal (fish), rodent (mouse), and soil animal (earthworm) after MPs entering their gastrointestinal tract. MPs pose substantial health risks to organisms, supported by increasing evidence from animal and human studies. MPs can impair the digestive systems of fish, mice, and earthworms, leading to reduce appetite, slow growth, and diminish reproductive capacity. Additionally, MPs can damage the intestinal mucosal barrier, further compromising health. MPs can increase the absorption of fat, and the lipase on the surface of lipid coated MPs can digest triglyceride, which maybe a potential mechanism leading to changes in fat metabolism. Meanwhile, this review also briefly elaborated a key step and important model for evaluating MPs using gut microbiota as the target organ. Ultimately, this review summarized the limitations in gut microbiota studies of MPs and their future development directions to better comprehend the effects of MPs on the animals and human gut microbiota.

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