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Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Environmental Sources Human Health Effects Marine & Wildlife Nanoplastics Sign in to save

Exposure to Polystyrene Nanoplastics Led to Learning and Memory Deficits in Zebrafish by Inducing Oxidative Damage and Aggravating Brain Aging

Advanced Healthcare Materials 2023 46 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 60 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Weishang Zhou, Weishang Zhou, Weixia Zhang, Difei Tong, Lingzheng Lu, Weishang Zhou, Yihan Yu, Yihan Yu, Difei Tong, Weixia Zhang, Difei Tong, Yihan Yu, Weishang Zhou, Lingzheng Lu, Difei Tong, Weishang Zhou, Yihan Yu, Weishang Zhou, Weixia Zhang, Weishang Zhou, Difei Tong, Xunyi Zhang, Weishang Zhou, Difei Tong, Dandan Tian, Dandan Tian, Dandan Tian, Dandan Tian, Difei Tong, Difei Tong, Dandan Tian, Dandan Tian, Dandan Tian, Dandan Tian, Yihan Yu, Weixia Zhang, Dandan Tian, Weishang Zhou, Lingzheng Lu, Yihan Yu, Dandan Tian, Dandan Tian, Dandan Tian, Lingzheng Lu, Lingzheng Lu, Lingzheng Lu, Lingzheng Lu, Lingzheng Lu, Dandan Tian, Dandan Tian, Lin Huang, Guangxu Liu Lingzheng Lu, Difei Tong, Difei Tong, Guangxu Liu Weishang Zhou, Difei Tong, Weishang Zhou, Weishang Zhou, Weishang Zhou, Yihan Yu, Yingying Yu, Yingying Yu, Lingzheng Lu, Difei Tong, Difei Tong, Difei Tong, Lin Huang, Weishang Zhou, Yihan Yu, Guangxu Liu Weishang Zhou, Weishang Zhou, Weishang Zhou, Guangxu Liu Lingzheng Lu, Yihan Yu, Lingzheng Lu, Guangxu Liu Weixia Zhang, Lin Huang, Guangxu Liu Weishang Zhou, Weixia Zhang, Weixia Zhang, Weixia Zhang, Xunyi Zhang, Weixia Zhang, Yihan Yu, Weishang Zhou, Guangxu Liu Xunyi Zhang, Weishang Zhou, Weishang Zhou, Yingying Yu, Dandan Tian, Dandan Tian, Dandan Tian, Yihan Yu, Yihan Yu, Guangxu Liu Lingzheng Lu, Dandan Tian, Guangxu Liu Weishang Zhou, Guangxu Liu Guangxu Liu Weixia Zhang, Weixia Zhang, Weishang Zhou, Lingzheng Lu, Lingzheng Lu, Dandan Tian, Guangxu Liu Lingzheng Lu, Guangxu Liu Guangxu Liu Dandan Tian, Guangxu Liu Guangxu Liu Wei Shi, Lingzheng Lu, Lingzheng Lu, Xunyi Zhang, Xunyi Zhang, Guangxu Liu Guangxu Liu Guangxu Liu Guangxu Liu Yingying Yu, Guangxu Liu Weishang Zhou, Guangxu Liu Weishang Zhou, Wangqi Pan, Guangxu Liu Guangxu Liu Guangxu Liu Wangqi Pan, Wangqi Pan, Guangxu Liu Guangxu Liu Guangxu Liu Weixia Zhang, Wangqi Pan, Jiawei Shen, Guangxu Liu Guangxu Liu Yihan Yu, Jiawei Shen, Wei Shi, Dandan Tian, Dandan Tian, Wei Shi, Guangxu Liu Guangxu Liu Guangxu Liu Guangxu Liu

Summary

Zebrafish exposed to polystyrene nanoplastics developed significant learning and memory problems, taking longer to navigate mazes and showing signs of accelerated brain aging. The nanoplastics caused oxidative damage, energy shortages, and disrupted the cell cycle in brain tissue. This study adds to growing evidence that nanoplastics small enough to cross the blood-brain barrier could impair cognitive function, raising concerns about long-term brain health effects from environmental nanoplastic exposure.

Polymers
Body Systems

Nanoplastics (NPs) may pass through the blood-brain barrier, giving rise to serious concerns about their potential toxicity to the brain. In this study, the effects of NPs exposure on learning and memory, the primary cognitive functions of the brain, are assessed in zebrafish with classic T-maze exploration tasks. Additionally, to reveal potential affecting mechanisms, the impacts of NPs exposure on brain aging, oxidative damage, energy provision, and the cell cycle are evaluated. The results demonstrate that NP-exposed zebrafish takes significantly longer for their first entry and spends markedly less time in the reward zone in the T-maze task, indicating the occurrence of learning and memory deficits. Moreover, higher levels of aging markers (β-galactosidase and lipofuscin) are detected in the brains of NP-exposed fish. Along with the accumulation of reactive free radicals, NP-exposed zebrafish suffer significant levels of brain oxidative damage. Furthermore, lower levels of Adenosine triphosphate (ATP) and cyclin-dependent kinase 2 and higher levels of p53 are observed in the brains of NP-exposed zebrafish, suggesting that NPs exposure also results in a shortage of energy supply and an arrestment of the cell cycle. These findings suggest that NPs exposure may pose a severe threat to brain health, which deserves closer attention.

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