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The Alleviative Effects of Weizmannia coagulans CGMCC 9951 on the Reproductive Toxicity of Caenorhabditis elegans Induced by Polystyrene Microplastics
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Researchers tested whether a probiotic strain called Weizmannia coagulans could reduce the reproductive harm caused by polystyrene microplastics in a laboratory worm model. They found that the probiotic improved reproductive outcomes by boosting antioxidant defenses and reducing DNA damage in the worms' reproductive cells. The study suggests that certain probiotics may help counteract some of the reproductive toxicity associated with microplastic exposure.
The increased emission and accumulation of microplastics pose a severe threat to humans and the environment. As effective biological agents for alleviating the effects of microplastics, the mechanism of action of probiotics remains unclear. In this study, based on the successful establishment of a reproductive virulence model of Caenorhabditis elegans (C. elegans), we explored the effect and mechanism of Weizmannia coagulans CGMCC 9951 (W. coagulans CGMCC 9951) on the reproductive toxicity of C. elegans. Our results showed that the gonad area and the number of offspring increased but the number of germ cells undergoing apoptosis decreased by 14% and 24% in C. elegans, after CGMCC 9951 treatments. Antioxidant test results showed that CGMCC 9951 increased the activity of Superoxide Dismutase (SOD), Catalase (CAT), and the content of Glutathione (GSH) in C. elegans. In addition, it was found by qPCR and mutagenesis experiments verified that CGMCC 9951 alleviated reproductive toxicity through the DNA checkpoint signaling pathway. Our findings suggested that CGMCC 9951 could alleviate the reproductive toxicity of polystyrene microplastics in C. elegans by enhancing antioxidant capacity and inhibiting DNA damage checkpoint signaling pathway. The above results suggest that probiotics can be used as a potential approach to alleviate the reproductive toxicity induced by polystyrene microplastics in humans.
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Lactobacillus brevis GKJOY Supplementation Ameliorates Oxidative Stress and Reproductive Dysfunction in Male Rats with Polystyrene Microplastics-Induced Reproductive Toxicity
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Researchers investigated whether the probiotic Lactobacillus brevis GKJOY could protect against reproductive damage caused by polystyrene microplastics in male rats. The study found that probiotic supplementation helped reduce oxidative stress and improved reproductive function in microplastic-exposed animals, suggesting that certain probiotics may offer protective benefits against microplastic-related reproductive toxicity.
Probiotics improve polystyrene microplastics-induced male reproductive toxicity in mice by alleviating inflammatory response
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Researchers found that giving mice probiotics (beneficial bacteria including Lactobacillus and Bifidobacterium) helped protect against reproductive damage caused by polystyrene microplastics. The microplastics disrupted gut bacteria and triggered inflammation that traveled to the testes via the gut-testis connection, reducing sperm quality and testosterone levels. Probiotic treatment restored healthy gut bacteria and reduced the inflammatory response, suggesting that maintaining gut health could help counteract some reproductive harm from microplastic exposure.
Probiotics as a therapeutic approach to alleviate reproductive harm from polystyrene microplastics in male rats
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Researchers tested whether probiotic supplementation could protect against reproductive toxicity caused by polystyrene microplastic exposure in male rats, finding that PS-MP caused dose-dependent testicular damage and disrupted kisspeptin signaling in the hypothalamus. Probiotics partially reversed these effects, suggesting a gut-testis axis through which microbiome modulation may mitigate reproductive harm.
Polystyrene-degrading bacteria modulate host stress and toxicity responses to microplastic exposure in Caenorhabditis elegans
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Scientists studied how gut bacteria affect the health impacts of microplastics (tiny plastic particles) using lab worms as a model. They found that different types of plastic-eating bacteria in the gut can either make microplastic exposure more harmful or help protect against it. This research suggests that the specific mix of bacteria in our intestines might influence how dangerous microplastics are to our health.
Could probiotics protect against human toxicity caused by polystyrene nanoplastics and microplastics?
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This review asks whether probiotics could counter the toxicity of polystyrene micro- and nanoplastics. It describes reported effects on gut bacteria, inflammation markers and intestinal leakage. The authors say more studies are required before any clinical recommendation can be made.
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