Contribution of the enterococcal surface protein Esp to pathogenesis of Enterococcus faecium endocarditis.

Contribution of the enterococcal surface protein Esp to pathogenesis of Enterococcus faecium endocarditis.
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DOI:
10.1016/j.micinf.2011.08.006
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发表时间:
2011-12
影响因子:
5.8
通讯作者:
Willems RJ
Willems RJ
中科院分区:
医学3区
文献类型:
--
作者:
Heikens E;Singh KV;Jacques-Palaz KD;van Luit-Asbroek M;Oostdijk EA;Bonten MJ;Murray BE;Willems RJ

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肠球菌表面蛋白Esp,与医院内的屎肠球菌特异性相关,参与生物膜的形成。为了评估Esp在心内膜炎中的作用,一种生物膜相关感染,表达Esp的粪肠杆菌菌株(E1162)或其缺乏Esp的突变体(E1162Δesp)通过导管接种到大鼠的左心室。24小时后,从心脏瓣膜植被中恢复的E1162Δesp比E1162少。此外,在esp阳性的粪肠杆菌血症和心内膜炎患者血清中检测到抗esp抗体。综上所述,Esp有助于大肠杆菌在心脏瓣膜的定植。此外,全身感染在人体内引起特异性抗体反应。
The enterococcal surface protein Esp, specifically linked to nosocomial Enterococcus faecium, is involved in biofilm formation. To assess the role of Esp in endocarditis, a biofilm-associated infection, an Esp-expressing E. faecium strain (E1162) or its Esp-deficient mutant (E1162Δesp) were inoculated through a catheter into the left ventricle of rats. After 24 hours, less E1162Δesp than E1162 were recovered from heart valve vegetations. In addition, anti-Esp antibodies were detected in Esp-positive E. faecium bacteremia and endocarditis patient sera. In conclusion, Esp contributes to colonization of E. faecium at the heart valves. Furthermore, systemic infection elicits an Esp-specific antibody response in humans.
DOI: 10.4161/viru.1.4.11966
发表时间: 2010-07
期刊: Virulence
影响因子: 5.2
作者:
Sillanpää J;Nallapareddy SR;Singh KV;Prakash VP;Fothergill T;Ton-That H;Murray BE
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