Platelet microbicidal activity is an important defense factor against viridans streptococcal endocarditis

被引：36

作者：

Dankert, J

Krijgsveld, J

van der Werff, J

Joldersma, W

Zaat, SAJ

机构：

[1] Univ Amsterdam, Acad Med Ctr, Dept Med Microbiol, NL-1105 AZ Amsterdam, Netherlands

[2] Univ Groningen Hosp, Dept Hosp Epidemiol, Groningen, Netherlands

来源：

JOURNAL OF INFECTIOUS DISEASES | 2001年 / 184卷 / 05期

关键词：

D O I：

10.1086/322802

中图分类号：

R392 [医学免疫学]; Q939.91 [免疫学];

学科分类号：

100102 ;

摘要：

To study the role of platelet microbicidal activity in host defense against infective endocarditis (IE) due to viridans streptococci (VS), the susceptibility to platelet releasate of blood and oral VS isolates from patients with and without IE was compared. The influence of neutralization of platelet microbicidal activity was studied in 2 experimental IE models. Resistance to platelet releasate was more prevalent among VS from blood of patients with IE than from blood of bacteremic patients without IE and among oral VS isolates. Serum from rabbits vaccinated with human platelet sonicate supernatants neutralized human and rabbit platelet-released microbicidal activity and had antibodies recognizing microbicidal proteins thrombocidin-1 and -2 and other human platelet proteins. In the 2 rabbit IE models, vaccination increased the susceptibility to experimental IE due to platelet releasate-susceptible VS. Thus, platelet-released microbicidal activity is an important host defense factor against IE due to VS.

引用

页码：597 / 605

页数：9

共 47 条

[1] PATHOGENESIS OF BACTERIAL ENDOCARDITIS [J].