聚多巴胺辅助的Cd/Cu双离子固定在表面上,用于应用抗菌手术仪器
Wenyi Yu1, Chengming Zhang1, Hui Xia1
1School of Materials Science and Engineering, Jiamusi University, No.258 Xuefu Street Jiamusi, Heilongjiang, China, Jiamusi, Heilongjiang, 154007, CHINA.
Biomedical materials (Bristol, England)
|January 30, 2026
概括
的手术仪器被增强了带有和铜离子的多多巴胺涂层,创造了有效的抗菌特性. 这种双离子修饰显著改善了对常见细菌的抗微生物活性,同时减少了离子释放.
科学领域:
- 生物材料科学 生物材料科学
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
背景情况:
- 由于其机械强度和生物相容性,合金对于手术仪器至关重要.
- 的一个关键限制是它对细菌感染的易感性,危及外科手术的结果.
- 开发抗菌表面对于提高手术安全性和疗效至关重要.
研究的目的:
- 开发新的抗菌手术仪器.
- 用于用聚多巴胺 (PDA) 涂层修改医疗用基板,这些涂层包含 (Cd) 和铜 (Cu) 离子.
- 为了评估改性的抗菌功效和离子释放特性.
主要方法:
- 基板被涂上聚多巴胺 (PDA).
- (Cd) 和铜 (Cu) 离子被加载到PDA涂层上.
- 分析了表面地形,化学状态和离子释放.
- 进行了最小抑制度 (MIC) 和最小杀菌度 (MBC) 测定,针对金黄色葡萄球菌 (S. aureus) 和大肠杆菌 (E. coli).
主要成果:
- 双离子 (Cd/Cu) 修改涂层显示,与单离子涂层相比,离子释放显著减少 (Cd离子减少95.13%).
- 与单独使用PDA相比,Cd/Cu联合修饰的涂层对S. aureus (99.89%抑制) 和大肠杆菌 (92.04%抑制) 具有更高的抗菌活性.
- 鉴定证实了成功的修改和离子结合.
结论:
- 这种Cd/Cu联合修改的PDA涂层有效地赋予了手术仪器的抗菌特性.
- 这种方法在最小化的离子释放和强大的抗微生物活性之间实现了平衡.
- 开发的抗微生物表面具有在手术仪器中临床应用的巨大潜力.
相关概念视频
Uncertainty in Measurement: Reading Instruments
51.8K
Counting is the type of measurement that is free from uncertainty, provided the number of objects being counted does not change during the process. Such measurements result in exact numbers. By counting the eggs in a carton, for instance, one can determine exactly how many eggs are there in the carton. Similarly, the numbers of defined quantities are also exact. For example, 1 foot is exactly 12 inches, 1 inch is exactly 2.54 centimeters, and 1 gram is exactly 0.001 kilograms. Quantities...
51.8K
Common Ion Effect
46.6K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Châtelier’s principle. Consider the dissolution of silver iodide:
46.6K
Precipitation of Ions
30.3K
Predicting Precipitation
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:
30.3K
Ion Channels
91.4K
The movement of ions like sodium, potassium, and calcium into and out of the cell is essential to maintain the electrochemical gradient in living cells. The ion channels—a class of membrane transport proteins—help maintain this ionic gradient for the smooth functioning of physiological activities such as maintaining cell size and volume, conducting nerve impulses, and gas and nutrient exchange.
Ion channels are specialized integral membrane proteins on the plasma membrane that allow...
Ion channels are specialized integral membrane proteins on the plasma membrane that allow...
91.4K
Instrument Calibration
750
Instrument calibration is essential for ensuring that instruments produce accurate and consistent results. It is vital in manufacturing, healthcare, testing laboratories, and scientific research. Calibration processes are specific to each instrument and help enhance data accuracy. Each instrument has a unique calibration process tailored to its design and function to improve data accuracy.
Analytical Balance Calibration
An analytical balance measures mass and requires regular calibration to...
Analytical Balance Calibration
An analytical balance measures mass and requires regular calibration to...
750
Instrumentation Amplifier
1.1K
An electrocardiography (ECG) machine is an essential piece of medical equipment used to monitor the electrical activity of the heart. It operates by detecting small electrical changes on the skin that result from the depolarization of the heart muscle during each heartbeat. However, these signals are in the microvolt range and can be easily overwhelmed by noise or interference.
To overcome this challenge, an ECG machine utilizes an instrumentation amplifier. This specialized amplifier is...
To overcome this challenge, an ECG machine utilizes an instrumentation amplifier. This specialized amplifier is...
1.1K


