微塑料的取决于尺寸的毒理影响:一篇综述
Guoliang Zhou1, Jia Li1, Ying Chen2
1School of Basic Medical Sciences, Institute of Biomedical Innovation, Jiangxi Medical College, Nanchang University, Nanchang 330031, China.
Ecotoxicology and environmental safety
|February 7, 2026
概括
较小的微塑料和纳米塑料 (MNP) 对健康构成更大的风险,特别是对器官. 本综述综合了证据,表明较小的颗粒会造成更大的伤害,强调需要更好的基于大小的风险评估.
科学领域:
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
- 材料科学 材料科学 材料科学
背景情况:
- 工业化推动了塑料生产,导致了广泛的环境污染.
- 在生态系统和人体组织中检测到的塑料碎片碎片成微塑料和纳米塑料 (MNP).
- 人们越来越担心MNP的健康风险,颗粒大小是毒性的关键因素.
研究的目的:
- 综合有关MNP在主要器官系统的大小依赖性毒理学结果的证据.
- 评估MNP大小对人类健康风险评估的影响.
- 确定改善大小解决的MNP风险评估的研究需求.
主要方法:
- 对MNP毒性的现有文献进行系统审查.
- 对整个消化,生殖,泌尿,心血管,呼吸和神经系统的与大小相关的毒理学影响的分析.
- 整合数据以识别大小依赖的MNP不良反应的模式.
主要成果:
- 较小的MNP (<10微米和纳米级) 通常会引起比较大的粒子更强烈的不良反应.
- 这种依赖大小的毒性与增强的屏障穿越,细胞相互作用以及随后的氧化应激和免疫激活有关.
- 器官水平的损伤和功能障碍在较小的MNP暴露时更加明显.
结论:
- 颗粒大小是MNP毒性的关键决定因素,较小的颗粒带来更大的风险.
- 目前的风险评估框架需要改进,以充分解决与规模相关的MNP影响.
- 未来的研究应该集中在协调的大小分类,相关的暴露指标和较小的MNP的生物监测上.
相关概念视频
Review and Preview
8.4K
In statistics, several tools are used to interpret the data. Measures of central tendency represent the characteristics of the data, such as mean, median, and mode. Additionally, measures of variance like standard deviation and range are used to find the spread of data from the mean. Relative standing measures the distance between data locations. Commonly used measures of relative standings are percentile, z score, and quartiles.
Percentiles are a type of fractile that partition data into...
Percentiles are a type of fractile that partition data into...
8.4K
Review and Preview
11.5K
Data are individual items of information obtained from a population or sample. Data may be classified as qualitative (categorical), quantitative continuous, or quantitative discrete. Because it is not practical to measure the entire population in a study, researchers use samples to represent the population. A random sample is a representative group from the population chosen by using a method that gives each individual in the population an equal chance of being included in the sample. Random...
11.5K
Factors Affecting Dissolution: Particle Size and Effective Surface Area
1.7K
Dissolution kinetics, an essential aspect of oral drug delivery, is significantly influenced by the drug's particle size. According to the Noyes-Whitney dissolution model, the dissolution rate correlates directly with the drug's surface area. The larger the surface area, the higher the drug's solubility in water, leading to a faster drug dissolution rate. Reducing particle size increases the effective surface area, enhancing the dissolution process. Micronization and nanosizing are...
1.7K
Cell Size
129.2K
Cell sizes vary widely among and within organisms. Bacterial cells range between 1-10 micrometers (μm)and are considerably smaller than most eukaryotic cells. The smallest bacteria are 0.1 μm in diameter—about a thousand times smaller than eukaryotic cells, which typically range from 10-100 μm.
Surface Area
Cells can take in nutrients and water via diffusion through the plasma membrane itself or through specific channels in the membrane. The area of the membrane surrounding...
Surface Area
Cells can take in nutrients and water via diffusion through the plasma membrane itself or through specific channels in the membrane. The area of the membrane surrounding...
129.2K
Frequency-dependent Selection
24.2K
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
24.2K
Buffer Effectiveness
55.5K
Buffer solutions do not have an unlimited capacity to keep the pH relatively constant . Instead, the ability of a buffer solution to resist changes in pH relies on the presence of appreciable amounts of its conjugate weak acid-base pair. When enough strong acid or base is added to substantially lower the concentration of either member of the buffer pair, the buffering action within the solution is compromised.
The buffer capacity is the amount of acid or base that can be added to a given volume...
The buffer capacity is the amount of acid or base that can be added to a given volume...
55.5K


