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Relation of human serum antibody against Staphylococcus epidermidis cell surface polysaccharide detected by enzyme‐linked immunosorbent assay to passive protection in the mouse
Author(s) -
Ichiman Y.,
Suganuma M.,
Takahashi M.,
Yoshida K.
Publication year - 1991
Publication title -
journal of applied bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 0021-8847
DOI - 10.1111/j.1365-2672.1991.tb02975.x
Subject(s) - heterologous , polysaccharide , antibody , staphylococcus epidermidis , chemistry , microbiology and biotechnology , enzyme , protein a , cell , staphylococcus aureus , immunology , biology , bacteria , biochemistry , gene , genetics
A specific and rapid enzyme‐linked immunosorbent assay (ELISA) has been applied for the detection of immunoglobulins to Staphylococcus epidermidis cell surface polysaccharides in human serum. Positive IgG, IgM and IgA titres of more than 1:6400, 1:1600 and 1:400 were observed with this assay against passive protective human serum. However, IgG, IgM and IgA titres of less than 1:400, 1:100 and 1:50 were shown in non‐protective serum. When the cross‐reactivity of passive protective human serum to homologous and heterologous cell surface polysaccharides was examined by inhibition test with ELISA, remarkable inhibition was shown with homologous cell surface polysaccharide, whereas no inhibition was observed with heterologous substances. According to these results, the quantitation of human serum antibody by the ELISA method against Staph. epidemidis cell surface polysaccharide was found to be significant for the demonstration of passive protective activities against Staph. epidermidis.