纳米粒子部分恢复细菌对抗生素的敏感性
Nina Bogdanchikova1, Roberto Luna Vazquez-Gomez2, Ekaterina Nefedova3
1Center for Nanoscience and Nanotechnology, National Autonomous University, Ensenada 22800, Mexico.
Materials (Basel, Switzerland)
|April 13, 2024
概括
银纳米粒子 (AgNP) 预处理乳头炎的奶牛增强了抗生素对抗耐药细菌的有效性,如Staphylococcus epidermidis. 这种方法部分恢复了抗生素的活性,并缩短了恢复时间.
科学领域:
- 兽医医学 兽医医学 兽医医学
- 微生物学 微生物学
- 纳米技术 纳米技术
背景情况:
- 细菌的抗生素耐药性构成了全球重大公共卫生挑战.
- 牛乳炎是一种常见的细菌感染,影响动物的健康和生产力.
- 对抗抗生素耐药性的新策略的探索对于人类和动物的健康至关重要.
研究的目的:
- 调查银纳米粒子 (AgNP) 预处理对乳腺炎受影响的奶牛中Staphylococcus epidermidis对31种抗生素的敏感性的影响.
- 为了将这些效应与以往对大肠杆菌 (Escherichia coli),杆菌 (Streptococcus dysgalactiae) 和金黄色杆菌 (Staphylococcus aureus) 的发现进行比较.
- 评估AgNPs在恢复抗生素疗效和改善恢复时间方面的潜力.
主要方法:
- 用银纳米粒子 (AgNPs) 预处理220头受乳腺炎影响的奶牛.
- 测试Staphylococcus epidermidis分离物对AgNP治疗后31种抗生素的敏感性.
- 与E. coli,S. dysgalactiae和S. aureus之前的数据进行比较分析.
- 调查细菌流量,粘附和抗溶酶活性的变化.
主要成果:
- 在所有四种测试物种中,AgNP预处理对31种抗生素的细菌敏感性增加了9.5-21.2%.
- 相反,一线抗生素治疗使敏感性降低了11.3-27.3%.
- 与传统的抗生素治疗相比,AgNP治疗减少了26.8-48.4%的恢复时间.
- 这种影响对大肠杆菌最为明显,对S. epidermidis的影响最少.
结论:
- 银纳米粒子预处理可以部分恢复抗生素对耐药细菌的活性.
- AgNP治疗为乳腺炎提供了一个有前途的辅助疗法,改善治疗结果并缩短恢复期.
- 了解涉及流出和粘附的机制是优化AgNP-抗生素组合的关键.
相关概念视频
Combined Effects of Drugs: Synergism
3.9K
Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...
Such synergistic combinations...
3.9K
Antibiotic Selection
53.3K
Overview
53.3K
Antimicrobial Proteins
984
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...
984


