同步的细菌屏障和排泄物吸收:一种新的双重功能敷料策略,用于预防针部位感染
Bing Liang1, Sha Zhou1,2, Linyuan Xue1,3
1Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, Shandong, 266071, China.
Materials today. Bio
|June 9, 2025
概括
PINSHIELD是一种新型的双功能带,可以防止细菌入侵,并管理伤口排泄物,显著减少针部位感染 (PSI). 这种创新解决方案通过控制细菌和改善伤口环境来增强愈合.
科学领域:
- 生物材料科学 生物材料科学
- 传染病研究 传染病研究
- 伤口愈合技术 伤口愈合技术
背景情况:
- 开放的针部位伤口存在高感染风险 (11-100%) 和并发症.
- 现有的伤口包裹不足以防止细菌入侵和控制感染.
- 针部位感染 (PSI) 需要先进的解决方案来进行有效的治疗.
研究的目的:
- 介绍PINSHIELD,这是一款用于PSI管理的双功能.
- 评估PINSHIELD在阻断细菌和管理排泄物的有效性.
- 评估PINSHIELD对伤口愈合和微生物环境的影响.
主要方法:
- 开发PINSHIELD,具有外部屏障和藻酸盐聚氨 (ZAPU) 层.
- 在体外测试细菌抑制 (S. aureus,大肠杆菌) 和细菌阻断效率.
- 在体内研究评估炎症,细菌负载和微生物多样性.
- 转录组和代谢组分析以阐明分子机制.
主要成果:
- 在PINSHIELD的研究中,S. aureus和E. coli在体外被90%抑制.
- 细菌阻断效率超过95%,超过了传统的带.
- 在体内研究表明,减少了炎症,减少了细菌负载,增强了微生物多样性.
- PINSHIELD降低了关键细菌毒性基因的调节,并破坏了代谢途径.
结论:
- 通过结合细菌屏障和排泄物管理,PINSHIELD有效地解决了PSI.
- 包裹增强治疗效果,促进伤口愈合.
- PINSHIELD为侵入性设备场景中的感染控制提供了一个多功能平台.
相关概念视频
Surface 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
Hand hygiene
3.1K
Asepsis is the practice of preventing or breaking the chain of infection. The nurse employs aseptic techniques to prevent the spread of microorganisms and reduce the risk of diseases. Hand hygiene is the cornerstone of aseptic techniques and is classified into medical and surgical asepsis. Medical asepsis includes hand hygiene and the use of gloves. Surgical asepsis, or the sterile technique, refers to practices that render and keep objects and areas free of microorganisms.
Hand washing...
Hand washing...
3.1K
Bacterial Signaling
31.6K
Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...
31.6K
Inflammatory Response II: Inflammatory Exudate and Tissue Repair
4.8K
The immune system's inflammatory response destroys the invading pathogen, permitting the tissue to heal. The changes during the cellular and vascular stages allow exudate formation at the site of inflammation. The inflammatory exudate released from the wound has high protein content and a specific gravity above 1.020.
The typical wound exudate is odorless, transparent, straw-colored, thin, and watery. Exudate, however, can differ depending on the state of wound healing. Likewise, the...
The typical wound exudate is odorless, transparent, straw-colored, thin, and watery. Exudate, however, can differ depending on the state of wound healing. Likewise, the...
4.8K
Defense Mechanism Against Infection
6.5K
Natural flora, body system defenses, and inflammation are natural barriers of the body against infectious agents regardless of previous exposure. Normal floras of the human body refer to the microbial population that colonizes the skin and mucous membranes.
In addition, many body organ systems have unique defenses against infection. The skin is an intact, multilayered surface preventing invasion by microorganisms unless impaired. Mucous membranes lining the mouth, nose, and eyelids are barriers...
In addition, many body organ systems have unique defenses against infection. The skin is an intact, multilayered surface preventing invasion by microorganisms unless impaired. Mucous membranes lining the mouth, nose, and eyelids are barriers...
6.5K


