多种可生物降解和常规微塑料对的毒性比较:摄入,组织损伤,氧化应激和转录反应
Chengbo Lu1, Haiyang Dong1, Hong Li1
1College of Resources and Environment, Shandong Agricultural University, Key Laboratory of Agricultural Environment in Universities of Shandong, Taian 271018, China.
Ecotoxicology and environmental safety
|November 15, 2025
概括
可生物降解的微塑料 (BMP) 在中表现出与常规微塑料 (CMP) 相同或更高的毒性. BMPs更加分裂,导致显著的组织损伤和改变基因表达,突出显示了土壤中的生态风险.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 土壤生态学 土壤生态学
背景情况:
- 人们越来越关注可生物降解微塑料 (BMP) 的环境风险.
- 与传统微塑料 (CMP) 相比,对BMP在土壤生物中的毒性和机制的理解有限.
- 缺乏全面的数据来评估各种BMP的安全性.
研究的目的:
- 系统地比较四种BMP (PLA,PCL,PBS,PBAT) 和一种CMP (PE) 对的毒性作用和机制.
- 为了研究摄入,碎片化,组织损伤,氧化应激和转录基因反应.
- 为陆地生态系统中BMPs的生态风险评估提供多维数据.
主要方法:
- 土 (Eisenia fetida) 暴露于五种微塑料类型 (四种BMP,一种CMP) 的0.25%,0.5%和1% (重量).
- 多方面的分析包括摄入,碎片化,组织损伤评估 (表皮,肠道),氧化应激标志物和转录基因分析.
- 在BMP和PE微塑料之间对毒理学反应的比较分析.
主要成果:
- 虫比PE微塑料更容易摄入和碎片化BMP.
- 微塑料暴露导致不同程度的表皮和肠道组织损伤.
- 氧化应激是由所有微塑料引起的,取决于类型,度和持续时间.
- 转录组分析揭示了对合成,新陈代谢,免疫反应和稳态的影响;BMPs独特地影响了亡途径.
结论:
- BMP对虫的毒性与传统聚乙烯微塑料的毒性相当或超过.
- 由于摄入,碎片化和独特的分子反应,BMPs在陆地生态系统中构成重大生态风险.
- 进一步的研究和全面的数据对于准确评估新出现的BMPs的生态风险至关重要.
更多相关视频
07:08Long-term Behavioral and Reproductive Consequences of Embryonic Exposure to Low-dose Toxicants
Published on: March 6, 2018
6.5K
08:22Author Spotlight: A New and Efficient Method for Comprehensive Metabolite Cytotoxicity Assessment of Triazole Pesticides in Plants
Published on: December 22, 2023
1.1K
相关概念视频
01:26Toxic Reactions: Overview
1.8K
When toxic substances penetrate the human body, they disseminate to various tissues, undergoing metabolic changes. This process yields reactive metabolites that may covalently bind with specific target molecules, resulting in toxicity.
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
1.8K
01:36Types of Toxins
3.1K
Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
3.1K