Antibody to the capsular polysaccharide/adhesin protects rabbits against catheter-related bacteremia due to coagulase-negative staphylococci.

Antibody to the capsular polysaccharide/adhesin protects rabbits against catheter-related bacteremia due to coagulase-negative staphylococci.
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荚膜多糖/粘附素抗体可保护兔子免受凝固酶阴性葡萄球菌引起的导管相关菌血症。

DOI:
10.1093/infdis/162.2.435
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发表时间:
1990
期刊:
The Journal of infectious diseases
影响因子:
--
通讯作者:
Pier,GB
Pier,GB
中科院分区:
--
文献类型:
--
作者:
Kojima,Y;Tojo,M;Goldmann,DA;Tosteson,TD;Pier,GB

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建立导管相关菌血症兔模型来研究凝固酶阴性葡萄球菌荚膜多糖/粘附素(PS/A)的免疫力。将凝固酶阴性葡萄球菌定植的导管插入右颈静脉并连接至皮下渗透泵,并在 14 天内获得血培养物。非免疫兔在感染后 6-8 天出现菌血症、低血糖和高脂血症,并且对磷壁酸有强烈的免疫反应,但对 PS/A 没有。 PS/A 免疫(而非磷壁酸免疫)将菌血症天数减少了约 60%,减少了低血糖和高脂血症,并消除了对磷壁酸的免疫反应。使用植入左颈静脉的单独的、未感染的导管泵组合被动输注 PS/A 特异性多克隆和单克隆抗体,可防止菌血症和该对侧导管的血行定植。
A rabbit model of catheter-related bacteremia was developed to study immunity to the capsular polysaccharide/adhesin (PS/A) of coagulase-negative staphylococci. Catheters colonized by coagulase-negative staphylococci were inserted into the right jugular vein and attached to a subcutaneous osmotic pump, and blood cultures were obtained over 14 days. Nonimmune rabbits were bacteremic for 6–8 days after infection, hypoglycemic, and hyperlipidemic and had strong immune responses to teichoic acid but not to PS/A. PS/A immunization, but not teichoic acid immunization, reduced the number of bacteremic days by ∼60%, diminished the hypoglycemia and hyperlipidemia, and ablated the immune responses to teichoic acid. Passive infusion of PS/A-specific polyclonal and monoclonal antibodies using a separate, noninfected catheter-pump combination implanted in the left jugular protected against both bacteremia and hematogenous colonization of this contralateral catheter.
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