The Effects of Deoxycholate and Sodium Dodecyl Sulphate on the Serological Reactivity of Antigens Isolated from Six Bacteroides Reference Strains

Overview

Journal Antonie Van Leeuwenhoek

Publisher Springer

Specialty Microbiology

Date 1990 Feb 1

PMID 2321930

Authors

I Beckmann

F Meisel-Mikolajczyk

H C Wallenburg

Affiliations

Soon will be listed here.

Abstract

The detergents sodium dodecyl sulphate (SDS) and sodium deoxycholate (NaD) are frequently used as solvents for macromolecular polysaccharide complexes in immunochemical and serological techniques. The influence of the disaggregating surfactants on the serological reactivity of endotoxins isolated from six serotype specific reference strains of the Bacteroides fragilis group was investigated by comparing haemagglutinating and precipitating reactivities of antigen solutions in phosphate buffered saline (PBS), NaD and SDS. All antigens were phenol/water extracted endotoxins. Solutions of antigens isolated from serotypes A, B, C and D in PBS exhibited mainly serotype specificity and a few well known low-titer cross reactions; solutions in NaD showed additional cross reactivity, which was enhanced by solubilization of the antigens in SDS. In immunoelectrophoresis endotoxins isolated from serotypes A and C and dissolved in NaD or SDS showed additional precipitation lines compared to solutions of the same antigens in PBS. These changes in the serological reactivity are of relevance for investigations where the serological specificity of antigens is in question.

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