相关实验视频
Updated: Jul 2, 2025

11:19
Oral Biofilm Formation on Different Materials for Dental Implants
Published on: June 24, 2018
11.5K
生物膜微环境激活抗生素辅助剂用于植入物相关的感染通过系统铁代谢干扰系统的铁代谢
Jianing Ding1, Xin Wang1, Wei Liu1
1Department of Orthopaedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|February 26, 2024
概括
一种新型的纳米药物 - - 瑞 (DFP) 载荷层双氧化物 (DFP@Ga-LDH),在植入物相关感染 (IAI) 中针对富含铁的环境. 这种纳米药物破坏了细菌的铁代谢,为抗感染和抗生素耐药性提供了新的策略.
科学领域:
- 生物材料科学 生物材料科学
- 传染性疾病 传染性疾病
- 纳米医学是一种纳米医学.
背景情况:
- 血瘤形成创造了富含铁的环境,促进了致病性细菌的生长和植入物相关感染 (IAI).
- 细菌的铁代谢是一个关键的漏洞,对于病原体的生存和毒性至关重要.
- 现有的治疗方法在有效打击IAI方面面临挑战.
研究的目的:
- 开发一种新的纳米医药,针对IAI中的富含铁的环境.
- 研究纳米药物在破坏细菌铁代谢中的作用机制.
- 评估抗菌疗效和作为抗生素耐药性的纳米辅助剂的潜力.
主要方法:
- 合成的deferiprone (DFP) 装载的分层双氧化物 (LDH) 纳米医药 (DFP@Ga-LDH).
- 研究DFP@Ga-LDH对酸性感染环境的反应及其对细菌铁代谢的影响.
- 评估DFP@Ga-LDH的抗菌特性及其延迟抗生素耐药性的能力.
- 将DFP@Ga-LDH与Cefiderocol (Cefi) 结合起来,形成DFP@Ga-LDH-Cefi.
- 使用ex vivo人体皮肤和小鼠IAI模型对抗微生物和生物安全的验证.
主要成果:
- DFP@Ga-LDH通过吸收铁并改变Pseudomonas aeruginosa中的Fe/Ga比率,有效地干扰细菌的铁代谢.
- 该纳米药物表现出显著的抗菌活性,并延迟了抗生素耐药性的出现.
- 联合纳米药物DFP@Ga-LDH-Cefi在相关模型中显示了经过验证的抗微生物和生物安全有效性.
- 这项研究强调了血液瘤诱导的IIA中富含铁的环境的关键作用.
结论:
- DFP@Ga-LDH是一个有前途的纳米平台,用于针对IAI中的细菌铁代谢.
- 这种纳米药物通过直接打击细菌和作为纳米辅助剂来打击耐药性,提供了一种双重方法.
- 这些发现为开发用于抗菌疗法的新纳米辅助剂提供了基础.
相关概念视频
Antimicrobial Proteins
990
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...
990
Bacterial Signaling
32.1K
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...
32.1K
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

