Zhang Haihong, Chen Yizhuo, Wang Jing, Wang Yudi, Wang Lei, Duan Zhenghua
Tianjin Key Laboratory of Hazardous Waste Safety Disposal and Recycling Technology, School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin, 300384, China.
College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
Mar Environ Res. 2022 Nov;181:105757. doi: 10.1016/j.marenvres.2022.105757. Epub 2022 Sep 26.
Global climate change is predicted to increase the average temperature of aquatic environments. Temperature changes modulate the toxicity of emerging chemical contaminants, such as nanoparticles (NPs). However, current hazard assessments of waterborne NPs seldom consider the influence of temperature. In this review, we gathered and analyzed the effects of temperature on the toxicity of waterborne NPs in different organisms. There was a general decrease in bioavailability with increasing temperature in algae and plants due to NPs aggregation, thus, reducing their toxicities. However, the agglomerated large particles caused by the increase in temperature induce a shading effect and inhibit algal photosynthesis. The toxicity of NPs in microorganisms and aquatic animals increases with increasing temperature. This may be due to the significant influence of high temperature on the uptake and excretion of chemicals across membranes, which increase the production of reactive oxygen species and enhance oxidative damage to organisms. High temperature also affect the formation and composition of a protein corona on NPs, altering their toxicity. Our results provide new insights into the toxicity of NPs in the context of global warming, and highlight the deficiencies of current research on NPs.
预计全球气候变化将提高水生环境的平均温度。温度变化会调节新兴化学污染物（如纳米颗粒（NPs））的毒性。然而，目前对水中纳米颗粒的危害评估很少考虑温度的影响。在本综述中，我们收集并分析了温度对不同生物体中水中纳米颗粒毒性的影响。由于纳米颗粒聚集，藻类和植物中生物利用度通常会随着温度升高而降低，从而降低其毒性。然而，温度升高导致的团聚大颗粒会产生遮光效应并抑制藻类光合作用。纳米颗粒在微生物和水生动物中的毒性随温度升高而增加。这可能是由于高温对化学物质跨膜吸收和排泄有重大影响，增加了活性氧的产生并增强了对生物体的氧化损伤。高温还会影响纳米颗粒上蛋白质冠层的形成和组成，改变其毒性。我们的结果为全球变暖背景下纳米颗粒的毒性提供了新见解，并突出了当前纳米颗粒研究的不足。
