type III secretion system

Ⅲ 型分泌系统
  • 文章类型: Journal Article
    尽管抗生素在现代医学的发展中不可或缺,它们的使用也有缺点。对广谱抗生素的耐药性不断增加,导致一线治疗无法治愈的感染流行。抗生素用作牲畜的生长因子加剧了耐药性,医生开出的处方过多,患者的治疗依从性差。这产生了抗性细菌群体,然后可以将抗性基因水平传播到其他细菌物种,包括共济会。此外,即使适当使用抗生素,它们伤害共生细菌,导致二次感染风险增加。有效的抗生素治疗可以诱导细菌生存策略,如毒素释放和增加抗性基因转移。这些问题凸显了对治疗细菌感染的新方法的需求。目前的解决方案包括联合疗法,窄谱疗法,和抗生素管理计划。这些调解了问题,但没有解决其根本原因。这些问题的一个新兴解决方案是抗毒力治疗:预防细菌发病而不是使用杀菌剂。在这次审查中,我们讨论了可以发展为细菌感染治疗的潜在抗毒力靶标和策略的选择示例:细菌III型分泌系统,仲裁感应,和脂质体。
    Although antibiotics have been indispensable in the advancement of modern medicine, there are downsides to their use. Growing resistance to broad-spectrum antibiotics is leading to an epidemic of infections untreatable by first-line therapies. Resistance is exacerbated by antibiotics used as growth factors in livestock, over-prescribing by doctors, and poor treatment adherence by patients. This generates populations of resistant bacteria that can then spread resistance genes horizontally to other bacterial species, including commensals. Furthermore, even when antibiotics are used appropriately, they harm commensal bacteria leading to increased secondary infection risk. Effective antibiotic treatment can induce bacterial survival tactics, such as toxin release and increasing resistance gene transfer. These problems highlight the need for new approaches to treating bacterial infection. Current solutions include combination therapies, narrow-spectrum therapeutics, and antibiotic stewardship programs. These mediate the issues but do not address their root cause. One emerging solution to these problems is anti-virulence treatment: preventing bacterial pathogenesis instead of using bactericidal agents. In this review, we discuss select examples of potential anti-virulence targets and strategies that could be developed into bacterial infection treatments: the bacterial type III secretion system, quorum sensing, and liposomes.
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