Staphylococcus epidermidis-Skin friend or foe?

Staphylococcus epidermidis-Skin friend or foe?
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DOI:
10.1371/journal.ppat.1009026
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发表时间:
2020-11
期刊:
影响因子:
6.7
通讯作者:
Horswill AR
Horswill AR
中科院分区:
医学1区
文献类型:
--
作者:
Brown MM;Horswill AR

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我们的皮肤是我们抵御环境和病原体挑战的第一道防线。它由细菌、真菌和病毒组成,它们通常相互作用,并与我们的免疫系统相互作用,以促进皮肤健康和动态平衡。表皮葡萄球菌是人体健康皮肤中含量最丰富的细菌定植菌之一。虽然该领域在历史上一直认为所有表皮葡萄球菌菌株的行为相似,但新出现的证据表明,特定菌株的定植可以帮助或损害皮肤屏障,具体取决于环境。在这篇简短的综述中,我们讨论了目前对表皮葡萄球菌菌株水平多样性的了解,并评估了表皮葡萄球菌皮肤定植的成本和收益。我们挑战了当前的教条,即“所有表皮葡萄球菌菌株的行为都是平等的”,并假设行为实际上高度依赖于背景和菌株。最后,根据目前关于使用皮肤共生物作为急慢性皮肤病的非抗生素治疗的建议,我们得出结论,在我们将共生物用于治疗之前,迫切需要更多的工作来充分了解共生物的致病和保护作用。
Our skin is our first line of defense against environmental and pathogenic challenges. It is densely populated by a flora of bacteria, fungi, and viruses that normally interact with each other and with our immune system to promote skin health and homeostasis. Staphylococcus epidermidis is one of the most abundant bacterial colonizers of healthy human skin. While the field has historically assumed that all S. epidermidis isolates behave similarly, emerging evidence suggests that colonization by specific strains of S. epidermidis can either help or hurt the skin barrier depending on the context. In this short review, we discuss what is currently understood about S. epidermidis strain-level diversity and evaluate costs and benefits of S. epidermidis skin colonization. We challenge the current dogma that “all S. epidermidis strains behave equally” and posit that behavior is in fact highly context and strain dependent. Finally, in light of current proposals to use skin commensals as nonantibiotic treatments for acute or chronic skin diseases, we conclude that more work is urgently needed to fully understand the pathogenic and protective roles of commensals before we use them therapeutically.
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