Effects of Polyvinyl Chloride Microplastics on the Reproductive System, Intestinal Structure, and Microflora in Male...

Area of Science:

• Environmental Science
• Toxicology
• Microbiology

Background:

• Microplastics, particularly polyvinyl chloride (PVC), are widespread environmental contaminants.
• Concerns are growing about their adverse effects on ecosystems and food chains.

Purpose of the Study:

• To investigate the impact of PVC microplastic exposure on the reproductive system, intestinal tissue, and gut microbiota in male and female mice.
• To identify potential sex-dependent effects of PVC exposure.

Main Methods:

• Kunming mice (n=6 per group) were divided into male/female control and PVC-exposed groups.
• Evaluated reproductive organ structure, intestinal villi height, crypt depth, and gut microbial diversity and composition.

Main Results:

• PVC exposure impaired testicular structure and reduced germ cells in males (p < 0.01).
• Females showed decreased ovarian follicles, uterus, and fallopian tube volumes (p < 0.01).
• Intestinal villi height decreased, crypt depth increased, altering the villus height/crypt depth ratio (p < 0.01), and microbial diversity was reduced in both sexes.

Conclusions:

• PVC microplastics induce reproductive and digestive system damage in mice.
• PVC exposure causes sex-dependent alterations in intestinal microflora, correlating with reproductive organ impacts.