Nat Commun:尿道致病性大肠杆菌感染尿道上皮细胞研究

2020-06-23 AlexYang MedSci原创

宿主相关的储存是复发性感染和顽固性感染的主要原因。之前的研究表明,尿道致病性大肠杆菌(泌尿道感染(UTIs)的主要原因)在UTI之前能够粘附到阴道上皮细胞。

宿主相关的储存是复发性感染和顽固性感染的主要原因。之前的研究表明,尿道致病性大肠杆菌(泌尿道感染(UTIs)的主要原因)在UTI之前能够粘附到阴道上皮细胞。

最近,有研究人员阐释了不同的尿道大肠杆菌分离物不仅能够粘附在阴道细胞上,而且还可以侵入阴道细胞。研究人员在急性和慢性大鼠UTI模型中检测到了阴道上皮细胞中的细胞内定殖,表明了大肠杆菌在UTI之后具有寄生在阴道中的能力。另外,在一个阴道定殖模型中,大肠杆菌在阴道细胞内和尿道中检测到,表明了阴道定殖能够影响到膀胱。更加重要的是,研究人员从具有复发UTI历史的女性临床样本中发现了阴道细胞中存在细菌。

最后,研究人员指出,他们的发现表明了大肠杆菌能够在阴道细胞内生存,且在引起上行感染前可以安全的远离细胞外的压力。

原始出处:

John R. Brannon, Taryn L. Dunigan, Connor J. Beebout et al. Invasion of vaginal epithelial cells by uropathogenic Escherichia coli. Nat Commun. 04 June 2020

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    2021-02-08 lifestar
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    2021-04-08 cnxcy
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    2021-01-12 liye789132251
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    2020-12-17 liuli5079
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