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Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...

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在小鼠模型中,微塑料聚乙烯诱导内耳功能障碍.

Javeria Zaheer1, Ho Sun Lee2, Seungyoun Kim1

  • 1Division of Applied RI, Korea Institute Radiological and Medical Sciences, Seoul 01812, Republic of Korea; Radiological and Medico-Oncological Sciences, Korea National University of Science and Technology (UST), Seoul 01812, Republic of Korea.

Journal of hazardous materials
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概括
此摘要是机器生成的。

在小鼠中,微塑料 (MP) 聚乙烯暴露导致听力损失和平衡问题. 在内耳积累的MPs导致功能障碍和大脑活动的改变,突出显示潜在的健康风险.

关键词:
平衡障碍是指一个平衡障碍.听力损失 听力损失 听力损失内部耳朵功能障碍 内部耳朵功能障碍微塑料是一种微塑料.聚乙烯聚乙烯的使用方法定子发射断层扫描 (PET) 是一种定子发射断层扫描.

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科学领域:

  • 环境健康 环境健康
  • 毒理学 毒理学 毒理学
  • 神经科学是一个神经科学.

背景情况:

  • 微塑料 (MP) 污染越来越令人担忧,关于其危险影响的报道越来越多.
  • 国会议员对内耳功能的影响,对听力和平衡至关重要,仍然在很大程度上是未知的.
  • 内耳功能障碍在所有年龄段普遍存在,需要对潜在的环境触发因素进行调查.

研究的目的:

  • 在小鼠模型中研究聚乙烯 (PE) 微塑料暴露对内耳功能的影响.
  • 为了确定PE MP是否会导致听力损失和平衡障碍.
  • 探索PE暴露后内耳和大脑中潜在的分子和代谢变化.

主要方法:

  • 在C57BL/6J小鼠中,每天口服PE MPs,持续4个月.
  • 评估了听力值,大脑葡萄糖代谢和与平衡相关的行为.
  • 进行了转录组分析,qRT-PCR,西部涂抹和免疫光染色以评估分子变化.

主要成果:

  • 在内耳的耳和前庭区域检测到PE MPs.
  • 暴露于PE导致听力值增加和平衡受损.
  • 转录基因分析显示,PE暴露的内耳组织中PER1,NR4A3和CEPB的上调调节.
  • 在听力皮层区域和内耳皮层观察到葡萄糖代谢的降低.

结论:

  • 在小鼠中,口服接触聚乙烯微塑料会诱导内耳功能障碍.
  • PE MPs 可能会导致听力损失和平衡障碍.
  • 这些发现表明,微塑料暴露与神经感官缺陷之间存在直接联系.