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Therapeutic Repair of Sperm Quality Decline Caused by Polytetrafluoroethylene
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Researchers found that PTFE (Teflon), a type of microplastic commonly used in non-stick cookware, was detected in nearly half of human male reproductive tissue samples and accumulated in the urogenital system. In mice, PTFE exposure damaged sperm development, disrupted DNA repair, and reduced fertility. The study also identified a potential treatment target, offering hope that some of this reproductive damage could be reversed.
The alarming prevalence of environmental microplastics has raised global concerns about fertility. However, the detriment of polytetrafluoroethylene (PTFE, Teflon), a widely used microplastic in non-stick cookware, to sperm quality remains unclear. Here, a high detection rate (46.62%) and bioaccumulation of PTFE in the male urogenital system are reported and the mechanisms of PTFE exposure on male fertility are investigated in both humans and mice and potential therapeutic strategies are explored. These findings reveal that PTFE exposure delays the development of spermatogonia and spermatocytes, disrupts chromosomal synapsis and the DNA damage response, and promotes the apoptosis of spermatocytes. Interestingly, PTFE exposure specifically targets SKAP2 in the haploid spermatid, leading to disruption of the sperm cytoskeleton, abnormal sperm morphology, and decreased sperm motility. Strikingly, therapy targeting SKAP2 remodels sperm cytoskeleton and morphology and restores sperm motility and male fertility in humans and mice. Collectively, these works illustrate the mechanisms of PTFE exposure impairing spermatogenesis and highlight SKAP2 targeting as a promising therapeutic strategy for treating asthenoteratozoospermia in humans.
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AIE-pharmacology-enabled organelle therapeutics for microplastic-induced asthenozoospermia
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Scientists have discovered that tiny plastic particles from PTFE (a common non-stick and waterproof coating material) can damage sperm by harming cell "batteries" (mitochondria) and triggering a harmful process called ferroptosis, contributing to male infertility. In mice, researchers created a new treatment combining healthy mitochondria with a natural plant compound that both repairs cellular energy production and blocks this damaging process, successfully restoring sperm count and movement. While this is early-stage animal research, it points to a promising new strategy for combating fertility problems linked to everyday plastic pollution exposure.
Association of mixed exposure to microplastics with sperm dysfunction: a multi-site study in China
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In a study of 113 men across three regions in China, microplastics were detected in all semen and urine samples tested, with eight different plastic types identified. The presence of certain microplastics, particularly PTFE (Teflon), was associated with reduced sperm quality, suggesting that microplastic exposure may pose risks to male fertility.
The Impact of Microplastics on Male Fertility
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Microplastics and nanoplastics accumulate in testicular tissue and disrupt spermatogenesis through oxidative stress, inflammation, endocrine disruption, and structural damage to reproductive cells, consistently impairing sperm quality in experimental models. With global plastic production accelerating alongside documented declines in semen quality, this review highlights microplastic exposure as a plausible environmental contributor to male infertility warranting urgent human study.
Microplastics and Nanoplastics: Emerging Threats to Male Reproductive Health, Spermatogenesis, and Fertility
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Researchers review growing evidence that microplastics and nanoplastics, now detected in human semen and testicular tissue, disrupt spermatogenesis and testosterone production through oxidative stress, endocrine-disrupting additives, and blood-testis barrier damage, while also linking these mechanisms to elevated prostate cancer risk.
Determination of Biological and Molecular Attributes Related to Polystyrene Microplastic-Induced Reproductive Toxicity and Its Reversibility in Male Mice
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Researchers exposed male mice to polystyrene microplastics through drinking water and found that the particles caused mitochondrial damage in testicular tissue, including reduced membrane potential and disrupted energy production. This mitochondrial dysfunction led to decreased sperm quality, likely driven by oxidative stress. Importantly, the study found that sperm quality recovered after one to two spermatogenic cycles without further exposure, suggesting that reproductive toxicity from microplastics may be reversible.
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