数字农科院2.0

Effects of polystyrene nanoplastics on the binding of ciprofloxacin to bovine serum albumin

文献类型： 外文期刊

作者： Du K.;Du X.;Sun Z.;Wang Y.;Bao Y.;Lan J.;Shi R.;Zhao Z.

作者机构：

关键词： Bovine serum albumin;Ciprofloxacin;Fluorescence quenching;Nanoplastics;Spectral analysis

期刊名称： Colloids and Surfaces A: Physicochemical and Engineering Aspects

ISSN： 0927-7757

年卷期： 2024 年 685 卷

页码：

收录情况： SCIE（2024版） ; ; EI（2024版）

摘要： Nanoplastics (NPs) and antibiotics have attracted more attention due to the potential toxicity to humans. Studies on their interactions as well as their subsequent combinations can provide useful information for understanding their health risks. In this study, bovine serum albumin (BSA) was used as the model protein to study the effects of polystyrene nanoplastics (PSNPs) on the binding of ciprofloxacin (CPFX) to BSA. The results showed that both the esterase-like activity of BSA in the presence and absence of PSNPs presented an increasing trend when increasing CPFX, and the enhancement when adding PSNPs could be attributed to the alteration of BSA conformation caused by PSNPs. The spectral analysis results indicated that the intrinsic fluorescence quenching of BSA in presence of CPFX is less affected by PSNPs, and PSNPs cannot directly affect the interactions between BSA and CPFX. Additionally, the binding experiments indicated that the presence of PSNPs is likely to promote the binding of CPFX to BSA molecules. This work will provide useful information on the influences of NPs to the health risks of antibiotics, and new insights into the toxic effects in the scene of co-existence. © 2024 Elsevier B.V.

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