CIRCULATING STAPHYLOCOCCAL ANTIGEN IN HUMANS AND IMMUNE RABBITS WITH ENDOCARDITIS DUE TO STAPHYLOCOCCUS-AUREUS - INHIBITION OF DETECTION BY PREEXISTING ANTIBODIES

被引：13

作者：

WHEAT, LJ ^{[1
]}

KOHLER, RB ^{[1
]}

TABBARAH, Z ^{[1
]}

WHITE, A ^{[1
]}

机构：

[1] INDIANA UNIV,MED CTR,DIV INFECT DIS,INDIANAPOLIS,IN 46204

来源：

JOURNAL OF INFECTIOUS DISEASES | 1979年 / 140卷 / 01期

关键词：

D O I：

10.1093/infdis/140.1.54

中图分类号：

R392 [医学免疫学]; Q939.91 [免疫学];

学科分类号：

100102 ;

摘要：

A radioimmunoassay for staphylococcal antigen that had detected antigenemia in each of 12 nonimmune rabbits with staphylococcal endocarditis detected antigen in sera from one of nine humans and two of eight immune rabbits with Staphylococcus aureus endocarditis. Staphylococcal antigens could be detected at concentrations as low as 0.78 μg/ml when diluted in normal rabbit serum, compared with 6.25 μg/ml when diluted in normal human serum and >25 μg/ml when diluted in immune rabbit or human serum. Low titers of staphylococcal antibody were found in normal rabbit serum compared with immune rabbit and normal or immune human sera. Detection of staphylococcal antigen was inhibited when the antigen was diluted in the IgG and IgM fractions, but not in the albumin fraction, of normal human serum. This study demonstrated that antigenemia can be detected infrequently in patients and immune rabbits with staphylococcal endocarditis; staphylococcal antibodies inhibit detection of antigen, presumably through formation of immune complexes. © 1979 by The University of Chicago.

引用

页码：54 / 61

页数：8

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