在慢性细菌性前列腺炎中,细菌增强了对大肠杆菌的多西环素活性
Novella Cesta1, Alessandro Fusco2, Caterina Ferretti2
1Infectious Diseases Unit, Department of Clinical & Experimental Medicine, Azienda Ospedaliero Universitaria Pisana, University of Pisa, Pisa, Italy.
International journal of antimicrobial agents
|July 5, 2025
概括
这项研究报告了成功治疗抗生素耐药性大肠杆菌引起的前列腺炎的案例,使用菌体疗法与多西环素相结合. 组合疗法在体外显示出协同效应,为慢性前列腺炎提供了有希望的方法.
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:
- 抗生素耐药的大肠杆菌 (大肠杆菌) 感染,特别是前列腺炎,存在重大治疗挑战.
- 菌体治疗是一种新兴的替代策略,用于对抗耐药细菌感染.
- 产生扩展谱β-乳糖酶 (ESBL) 的大肠杆菌菌株使前列腺炎的治疗选择复杂化.
研究的目的:
- 报告一个成功治疗前列腺炎的病例,使用菌体疗法与多西环素结合.
- 评估菌体-抗生素组合对大肠杆菌的体外协同效应.
- 探索菌体疗法作为抗生素耐药性前列腺炎的可行选择.
主要方法:
- 一名患有由ESBL产生大肠杆菌引起的前列腺炎的患者接受了30天的口服多西环林和两个特定的菌体尾酒治疗.
- 在体外检查板测试中,评估了单独和组合对大肠杆菌分离物的多西环素和菌体的最小抑制度 (MIC).
- 通过分数抑制度指数,协同图分析和细菌生长曲线监测来评估协同效应.
主要成果:
- 患者的前列腺炎症状缓解,微生物培养在治疗后变得阴性.
- 实验室研究表明,多西环素与菌体之间对五种大肠杆菌分离物中的三种具有协同作用或添加作用.
- 与单一治疗相比,联合治疗显示出增强的细菌生长抑制,特别是在前12小时内.
结论:
- 多西环素和菌体尾酒的组合在治疗抗生素耐药大肠杆菌引起的前列腺炎方面被证明是有效的.
- 观察到的体外协同作用表明这种菌体-抗生素组合是消除慢性前列腺炎的有希望的策略.
- 在向Mycoplasma spp.的同时,多西环林的使用,与菌体治疗一起,有助于整体疗效.
相关概念视频
Lytic Cycle of Bacteriophages
72.2K
Bacteriophages, also known as phages, are specialized viruses that infect bacteria. A key characteristic of phages is their distinctive “head-tail” morphology. A phage begins the infection process (i.e., lytic cycle) by attaching to the outside of a bacterial cell. Attachment is accomplished via proteins in the phage tail that bind to specific receptor proteins on the outer surface of the bacterium. The tail injects the phage’s DNA genome into the bacterial cytoplasm. In the...
72.2K
Lysogenic Cycle of Bacteriophages
63.3K
In contrast to the lytic cycle, phages infecting bacteria via the lysogenic cycle do not immediately kill their host cell. Instead, they combine their genome with the host genome, allowing the bacteria to replicate the phage DNA along with the bacterial genome. The incorporated copy of the phage genome is called the prophage. Some prophages can re-activate and enter the lytic cycle. This often occurs in response to a perturbation, such as DNA damage, but can also transpire in the absence of...
63.3K
Viral Replication: Lysogenic Cycle
267
The lysogenic cycle is a crucial viral replication strategy that allows bacteriophages to persist within host cells without immediately destroying them. This process is primarily observed in temperate phages, such as bacteriophage lambda (λ), which infects Escherichia coli. The cycle allows the viral genome to persist across bacterial generations while keeping host cells viable.Integration of the Viral GenomeUpon infection, bacteriophage lambda attaches to the bacterial surface and injects...
267
Viral Replication: Lytic Cycle
286
Bacteriophages, or phages, are viruses that specifically infect bacteria. Among them, T-even bacteriophages, such as T4, exhibit a well-characterized lytic replication cycle in Escherichia coli (E. coli). This process ensures the rapid proliferation of the virus while ultimately leading to the destruction of the bacterial host.Attachment and DNA InjectionThe infection process begins with the recognition and binding of the T4 phage to the E. coli cell surface. Tail fibers of the phage...
286
DNA Bacteriophages
160
Bacteriophages, or phages, are viruses that specifically infect bacteria, utilizing their genetic material to hijack host cellular machinery for replication. DNA bacteriophages employ single-stranded DNA (ssDNA) or double-stranded DNA (dsDNA) genomes. These phages exhibit diverse replication strategies and host interactions, influencing their ecological roles and applications in biotechnology and medicine.ssDNA BacteriophagesssDNA phages, with their small genomes, utilize unique strategies to...
160


