基于聚氨基酸的Zwitterionic涂层可以通过抗污染和恢复微环境来抑制凝血和炎症
Zehong Xiang1,2, Honghong Chen3, Feng Wu1,2
1Zhuhai Institute of Advanced Technology, Chinese Academy of Sciences, Zhuhai, Guangdong, 519000, China.
Macromolecular bioscience
|November 8, 2024
概括
这项研究开发了一种用于生物医学植入物的新型氨基酸zwitterionic涂层. 这种先进的涂层可以防止蛋白质粘附和血栓形成,在复杂的生理环境中提高植入物安全性和寿命.
科学领域:
- 生物材料科学 生物材料科学
- 表面化学 表面化学
- 聚合物科学 聚合物科学
背景情况:
- 生物医学植入物并发症是由于有限的表面特性而引起的蛋白质粘附和血栓形成.
- 现有的水友性或药物释放性涂层在复杂的生理条件下无法提供足够的保护.
- 开发先进的涂层对于改善植入物性能和患者的治疗结果至关重要.
研究的目的:
- 为了构建一个由聚氨基酸衍生的zwitterionic涂层.
- 评估涂层防止蛋白质粘附和消除活性氧物种 (ROS) 的能力.
- 为生物医学应用评估涂层的生物相容性和抑制血栓形成的有效性.
主要方法:
- 制造一种由聚氨基酸衍生出的zwitterionic涂层.
- 涂料性能的表征,包括水友性,稳定性和滑性.
- 在体外和体内对蛋白质粘附,ROS清除,生物相容性和血栓形成抑制的评估.
主要成果:
- 兹维特里昂涂层表现出极好的水友性,稳定性和滑性.
- 涂层有效地防止了蛋白质的粘附,并消除了过氧化,保持了微环境的稳定性.
- 在体内和体外研究证实了良好的生物相容性和显著抑制血栓形成.
结论:
- 开发的氨基酸zwithterionic涂层成功地解决了生物医学植入物中蛋白质粘附和血栓形成的挑战.
- 涂层能够清除ROS并保持微环境稳定性的能力有助于减少植入物并发症.
- 这项研究提供了一种有前途的新方法,用于开发先进的基于氨基酸的zwitterionic聚合物涂层,以提高植入物的使用寿命和安全性.
相关概念视频
01:06Coagulation
273
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
273
01:30Anticoagulant Drugs: Low-Molecular-Weight Heparins
623
Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
623
01:29Biofilms
1
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...
1
01:23Antimicrobial Proteins
934
Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
934
01:18Surface Membrane Barriers
1.1K
The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
1.1K