单一功能障碍介导的附带敏感性推动了有效的抗生素联合疗法,以对抗tigecycline耐药的病原体
Feiyu Yu1, Shuyao Zhu1, Qingyang Lv1
1Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China.
Cell reports
|July 12, 2025
概括
结合tigecycline和尼托福兰,可以克服细菌耐药性. 该策略利用附带敏感性来有效治疗多药耐药性感染,并防止进一步的耐药性发展.
科学领域:
- 微生物学 微生物学
- 传染性疾病 传染性疾病
- 药理学 药理学是指药理学的学科.
背景情况:
- 提格环素是治疗多药耐药 (MDR) 细菌感染的关键最后手段抗生素.
- 对tigecycline的新兴耐药性显著限制了其临床实用性.
- 抗生素组合疗法是对抗MDR病原体的有希望的策略.
研究的目的:
- 为了研究进化型tigecycline耐药细菌的附带敏感性.
- 探索将tigecycline与其他抗生素结合以提高疗效的潜力.
- 了解底层的机制tigecycline耐药性和附带敏感性.
主要方法:
- 在大肠杆菌和沙门氏菌中对tigecycline耐药性的演变.
- 对氨基糖化物和酸黄的附带敏感性的评估.
- 抵抗机制的分析,包括质子动力变化和Lon蛋白酶功能障碍.
- 在体外和预防耐药性发展方面评估组合治疗的疗效.
主要成果:
- 进化后的对tigecycline耐药菌株对氨基糖化物和酸素表现出附带敏感性.
- 质子驱动力的改变赋予了tigecycline耐药性和aminoglycoside敏感性.
- 耐药菌株中的Lon功能障碍导致了sulA过度表达和膜破坏,使它们对酸黄敏感.
- 提格环素-尼托福兰组合消除了耐药菌株,并抑制了耐药性的发展.
结论:
- 可以利用附带敏感性来设计有效的抗生素组合来对抗MDR细菌.
- 提格环素和尼托福兰的组合提供了一种可行的策略,以对抗抗性抗病原体.
- 这种方法有望克服当前的治疗局限性,并防止未来的耐药性.
相关概念视频
Combined Effects of Drugs: Synergism
4.8K
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...
4.8K
Antibiotic Selection
55.3K
Overview
55.3K
Development of Antibiotic Resistance
217
Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
217
Defense Against Bacterial Pathogens
1.5K
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
1.5K
Urine Studies II: Urine Culture and Sensitivity Test
126
A urine culture and sensitivity test is a diagnostic procedure used to identify urinary tract bacterial infections and determine the most effective antibiotics for treatment. This test is generally preferred when a patient shows manifestations of a urinary tract infection, such as frequent or painful urination, cloudy or foul-smelling urine, or lower abdominal pain.Purpose of the TestThe primary goals of a urine culture and sensitivity test are to:Determine the specific bacteria causing the...
126
Mismatch Repair
40.6K
Overview
40.6K


