编程时间释放的多功能水凝的构建,具有抗菌和抗炎性质,用于损伤愈合
Yuan Peng1, Yicheng Guo2, Xin Ge3
1Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, 639 Zhi Zao Ju Road, Shanghai, 200011, China.
Journal of nanobiotechnology
|March 23, 2024
概括
这项研究引入了一种编程时间释放的多功能水凝 (PTMH),以改善伤口愈合. PTMH水凝有效地对抗细菌感染,减少炎症,促进糖尿病伤口中的组织修复.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 纳米技术 纳米技术
背景情况:
- 伤口愈合障碍是一个重大的临床挑战,通常由细菌感染和氧化应激加剧.
- 目前的治疗方法很难在不同愈合阶段动态地管理复杂的伤口微环境.
研究的目的:
- 开发一种双层水凝系统,能够对伤口微环境进行定时,相位特定的调制.
- 为了解决细菌感染,氧化应激和炎症在受损的伤口愈合.
主要方法:
- 制造双层水凝 (含酸盐的氧化纳米颗粒和含聚N-异烯胺的氧化铜纳米酶).
- 利用可见光激活的氧化用于早期抗菌作用.
- 采用氧化铜纳米酶用于后期反应性氧物种清除和抗炎作用.
主要成果:
- 水凝在早期阶段对感染表现出有效的抗菌活性.
- 释放的氧化铜纳米酶中和了活性氧物种和炎症因素,促进过渡到增殖阶段.
- 观察到增强的血管生成,改善了对伤口部位的营养和氧气输送.
结论:
- 编程时间释放的多功能水凝 (PTMH) 在小鼠模型中有效促进糖尿病伤口愈合.
- PTMH具有显著的抗菌和抗炎性质,对于成功的伤口再生至关重要.
相关概念视频
Inflammatory Response
12.6K
An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
12.6K
Waterproofing and Anti-Bacterial Admixtures in Concrete
336
Concrete's susceptibility to water absorption is due to the capillary action within the pores of its hydrated cement paste. This action draws water in, creating the need for waterproofing admixtures to prevent such penetration. The efficacy of these admixtures is contingent upon the water pressure, with variations arising from different conditions such as rain, capillary rise, or hydrostatic pressure in structures intended to hold water.
Waterproofing admixtures render concrete hydrophobic,...
Waterproofing admixtures render concrete hydrophobic,...
336
Modified-Release Drug Delivery Systems: Stimuli-Activated
186
Stimuli-activated drug delivery systems are designed to release drugs in response to specific physical, chemical, or biological stimuli. These systems often utilize hydrogels—three-dimensional, hydrophilic polymer networks capable of swelling in aqueous environments and retaining significant fluid volumes. Upon exposure to particular stimuli, these hydrogels undergo structural transitions that allow the embedded drug to be released. Due to this adaptive behavior, such systems are also...
186
Chemical Agents for Microbial Control
1.7K
Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...
1.7K
Inhibitors of Bacterial DNA Synthesis
163
Bacterial pathogens depend on precise and efficient DNA replication to sustain infection. Two type II topoisomerases—DNA gyrase and topoisomerase IV—are critical to this process, as they resolve DNA supercoiling and unlink chromosomes during replication. Fluoroquinolones, synthetic derivatives of quinolones, exploit this mechanism by stabilizing the transient DNA–enzyme cleavage complex, preventing strand religation, and causing lethal double-strand breaks. These...
163
Healing I: Introduction
15
Healing is the physiological process by which the body restores the integrity and function of damaged tissues following injury. It involves a coordinated interplay of cellular proliferation, extracellular matrix remodeling, and growth factor signaling. The extent and nature of the tissue damage determine whether healing occurs by resolution, regeneration, or replacement.ResolutionResolution represents the most complete form of healing, occurring when the injury is minimal and tissue...
15


