基于黄素的多功能聚合物涂层:对抗细菌,炎症和凝血的有希望的平台
Julia Sánchez-Bodón1, Isabel Moreno-Benitez2, José Manuel Laza1
1Macromolecular Chemistry Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country, UPV/EHU, B/Sarriena s/n, Leioa, 48940, Spain.
Colloids and surfaces. B, Biointerfaces
|July 2, 2024
概括
研究人员开发了一种新的方法,将黄素固定在聚乙烯二甲 (PET) 表面上,从而创建了先进的医疗植入物. 这种功能化的材料有效地对抗细菌粘附,炎症和凝血,提高了植入物安全性和性能.
科学领域:
- 生物材料科学 生物材料科学
- 聚合物化学 聚合物化学
- 表面工程是什么?表面工程是什么?
背景情况:
- 医疗植入物经常面临细菌污染和炎症,导致植入物相关感染 (IAI).
- 聚合物如聚乙烯二甲 (PET) 的表面修饰对于防止细菌殖民和炎症反应至关重要.
- 黄素是一种天然化合物,具有有益的生物活性,但具有不良的溶解性和稳定性.
研究的目的:
- 使用点击化学 (铜 (I) 催化亚酸环添加 - CuAAC) 将黄素衍生物固定在PET表面上.
- 评估功能化PET表面对抗细菌粘附,炎症和凝血的有效性.
- 建立一个强大的表面功能化方法,并评估材料的生物相容性.
主要方法:
- 使用CuAAC,对PET进行表面化功能化,然后对丹西尔衍生物 (用于监测) 和黄素衍生物进行生物结合.
- 使用紫外可见 (UV-Vis) 光谱,X射线光电子光谱 (XPS),减弱总反射率里埃转换红外 (ATR-FTIR),扫描电子显微镜 (SEM) 和接触角度测量进行表面表征.
- 生物测试包括细胞毒性测试,炎症标记分析 (IL-6),细菌生长抑制测试 (格拉姆阳性和格拉姆阴性细菌),血解速率分析和全血凝结测试.
主要成果:
- 通过各种特征化技术证实了丹西尔和黄衍生物在PET表面上的成功固定.
- 用黄素修饰的PET表面 (PET-Cur) 没有表现出细胞毒性,并且显著降低了炎症标志物 (IL-6).
- PET-Cur表面表现出强大的抗菌特性,对抗阳性和阴性细菌,并显示出抗血栓性作用,没有血液溶解问题.
结论:
- 该研究成功开发了一种用于将黄素衍生物固定在PET表面的新方法,从而创建先进的生物材料.
- 功能化的PET表面有效抑制细菌的粘附,减少炎症,并具有抗血栓性质.
- 这种方法为开发更安全,更有效的医疗植入物提供了有希望的战略,具有增强的生物相容性和降低感染风险.
相关概念视频
Bioavailability Enhancement: Drug Stability Enhancement and GI Retention
336
Improving a drug's stability in the gastrointestinal (GI) tract is paramount for enhancing its bioavailability and therapeutic effectiveness. Various strategies are employed to protect the drug from the harsh gastric milieu and to ensure its release and absorption at the desired site within the GI tract.Polymer coatings are one such method used to shield drugs from the stomach's acidic environment. By preventing premature drug release, these coatings improve the bioavailability of unstable...
336
Site-Targeted Drug Delivery Systems: Polymeric Carriers
165
Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...
165
Biofilms
2.1K
Biofilms are complex communities of microorganisms encased in a self-produced extracellular polysaccharide matrix attached to surfaces. These microbial consortia can include single or multiple species, providing enhanced survival benefits by forming organized, multilayered structures.The formation of biofilms occurs through four key stages: attachment, colonization, development, and dispersal.During attachment, free-swimming planktonic cells adhere to a surface, often facilitated by...
2.1K
Microbial Corrosion
111
Microbiologically Influenced Corrosion (MIC) is a significant form of material degradation caused by the metabolic activities of microorganisms. This phenomenon poses substantial challenges across various industries, including oil and gas, maritime, and water treatment sectors.MIC occurs when microorganisms, such as bacteria, archaea, and fungi, colonize metal surfaces, forming biofilms that alter the local electrochemical environment. These biofilms can lead to the production of corrosive...
111


