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金黄色葡萄球菌与内皮细胞的相互作用:细菌“可分泌扩展黏附分子库”(SERAM)在扰乱宿主防御系统中的作用。

Staphylococcus aureus interactions with the endothelium: the role of bacterial "secretable expanded repertoire adhesive molecules" (SERAM) in disturbing host defense systems.

作者信息

Chavakis Triantafyllos, Wiechmann Klaus, Preissner Klaus T, Herrmann Mathias

机构信息

Experimental Immunology Branch, NCI, NIH, Bethesda, Maryland, USA.

出版信息

Thromb Haemost. 2005 Aug;94(2):278-85. doi: 10.1160/TH05-05-0306.

Abstract

The intravascular manifestation of Staphylococcus aureus infection is often associated with a severe, and sometimes catastrophic disease. Many host factors contribute to endothelial tropism of S.aureus including subendothelial matrix proteins, endothelial cell receptors, and platelets that are engaged together with S. aureus cell wall adhesins such as the fibronectin binding proteins. Recently, the role of secreted staphylococcal factors that were initially identified by virtue of their binding function with host proteins and ligands, has been reappraised in this regard. Among these, bacterial proteins without significant homology among each other, coagulase (Coa), the extracellular fibrinogen binding protein (Efb), the extracellular matrix binding protein (Emp), or the extracellular adhesive protein (Eap), are the most prominent ones to be associated with endovascular disease. Newly discovered interactions with host components may account for profound effects on immunmodulation and wound healing which are summarized in this short review and which ascribe an important role of these molecules in acute and chronic endo- and extravascular staphylococcal disease. Further research in the complex functional role of these "secretable expanded repertoire adhesive molecules" (SERAM) may not only help to increase our understanding in the pathogenesis of S. aureus infection but can specify novel targets for preventive or therapeutic strategies.

摘要

金黄色葡萄球菌感染的血管内表现通常与严重的、有时甚至是灾难性的疾病相关。许多宿主因素促成了金黄色葡萄球菌对内皮细胞的嗜性,包括内皮下基质蛋白、内皮细胞受体以及与金黄色葡萄球菌细胞壁黏附素(如纤连蛋白结合蛋白)共同作用的血小板。最近,最初因其与宿主蛋白和配体的结合功能而被鉴定出的分泌型葡萄球菌因子在这方面的作用已被重新评估。其中,彼此之间无显著同源性的细菌蛋白,如凝固酶(Coa)、细胞外纤维蛋白原结合蛋白(Efb)、细胞外基质结合蛋白(Emp)或细胞外黏附蛋白(Eap),是与血管内疾病关联最为显著的蛋白。与宿主成分新发现的相互作用可能解释了其对免疫调节和伤口愈合的深远影响,本简短综述对此进行了总结,并认为这些分子在急性和慢性血管内及血管外葡萄球菌疾病中发挥着重要作用。对这些“可分泌扩展黏附分子库”(SERAM)复杂功能作用的进一步研究,不仅可能有助于增进我们对金黄色葡萄球菌感染发病机制的理解,还能明确预防或治疗策略的新靶点。

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