【Advanced Healthcare Materials】 Salt-Triggered Adaptive Dissociation Coating with Dual Effect of Antibacteria and Anti-Multiple Encrustations in Urological Devices（IF=11.09，中科院一區）
作者：Huan Yu, Hengchong Shi,* Ming Zhu, Xu Zhang, Lei Wang, Gongwei Tian, Lingjie Song
關鍵字：Antibacteria，Urologica
論文來源：期刊
具體來源：Advanced Healthcare Materials
發表時間：2023年
Abstract:
Bacterial infections and multiple encrustations are life-threatening complications in patients implanted with urological devices. Limited by time-consuming procedures and substrate dependence, it is difficult to simultaneously prevent the aforementioned complications. Herein, is reported the design of a salt-triggered chondroitin sulfate complex (CS/Si-N+) coating with adaptive dissociation, which realizes the dual functions of antibacterial and anti-multiple encrustations in urological devices with arbitrary shapes. The existence of covalent interactions between the complex and the interface ensures the formation of a robust coating, especially in harsh environments. Benefiting from the adaptive dissociation of the ion pairs in the CS/Si-N+ coating in urine electrolytes, the exposed ion groups and enhanced hydrophilicity are more conducive to the inhibition of bacterial infection and multiple encrustations simultaneously. The coating exhibits broad-spectrum bactericidal effects. As a proof of concept, in a simulated metabolic encrustation model, the coating exhibits significant advantages in resisting calcium oxalate encrustation, with a reduction in the calcium content by over 90%. In addition, this non-leachable all-in-one coating shows good biocompatibility in a pig in vivo model. Such a coating strategy is expected to be a practical approach for preventing urological medical device-related complications.