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[Development of an enzyme-linked immunosorbent assay (ELISA) for detection of IgM and IgG antibodies to lipopolysaccharide of Escherichia coli O157]. 1999

N Sugawara, and T Saika, and M Hasegawa, and I Kobayashi, and F Kurimoto, and T Takeda
Research & Development Division, Mitsubishi Kagaku Bio-Clinical Laboratories, Inc.

We developed the enzyme-linked immunosorbent assay (ELISA) for detection of serum IgM and IgG antibodies to lipopolysaccharide (LPS) of Escherichia coli O157:H7 (VT1+, VT2+) isolated from a clinical sample. We tested the patient's sample with hemolytic uremic syndrome (HUS) and hemorrhagic colitis (HC). And we evaluated the value of sample OD to cut off control OD as the Index. The CVs obtained in precision studies were below 10% for intra- and inter-assay, respectively. The cut off index value of infants and children (0 to 5 years) was 0.60 for IgM and 0.95 for IgG. Moreover we investigated the specificity to E. coli O157 from other E. coli serotypes in this method. From these results, O27 serotype was crossreacted in this assay, but other serotypes were not reacted. In the patients with HUS and HC, some cases were already positive for IgM at 3 days, but for IgG 8 days were needed for it to become positive. We concluded that this ELISA for IgM and IgG for E. coli O157 LPS have a useful performance, and might be the useful tool for rapid diagnosis for E. coli O157 infection.

UI MeSH Term Description Entries
D007074 Immunoglobulin G The major immunoglobulin isotype class in normal human serum. There are several isotype subclasses of IgG, for example, IgG1, IgG2A, and IgG2B. Gamma Globulin, 7S,IgG,IgG Antibody,Allerglobuline,IgG(T),IgG1,IgG2,IgG2A,IgG2B,IgG3,IgG4,Immunoglobulin GT,Polyglobin,7S Gamma Globulin,Antibody, IgG,GT, Immunoglobulin
D007075 Immunoglobulin M A class of immunoglobulin bearing mu chains (IMMUNOGLOBULIN MU-CHAINS). IgM can fix COMPLEMENT. The name comes from its high molecular weight and originally was called a macroglobulin. Gamma Globulin, 19S,IgM,IgM Antibody,IgM1,IgM2,19S Gamma Globulin,Antibody, IgM
D008070 Lipopolysaccharides Lipid-containing polysaccharides which are endotoxins and important group-specific antigens. They are often derived from the cell wall of gram-negative bacteria and induce immunoglobulin secretion. The lipopolysaccharide molecule consists of three parts: LIPID A, core polysaccharide, and O-specific chains (O ANTIGENS). When derived from Escherichia coli, lipopolysaccharides serve as polyclonal B-cell mitogens commonly used in laboratory immunology. (From Dorland, 28th ed) Lipopolysaccharide,Lipoglycans
D004797 Enzyme-Linked Immunosorbent Assay An immunoassay utilizing an antibody labeled with an enzyme marker such as horseradish peroxidase. While either the enzyme or the antibody is bound to an immunosorbent substrate, they both retain their biologic activity; the change in enzyme activity as a result of the enzyme-antibody-antigen reaction is proportional to the concentration of the antigen and can be measured spectrophotometrically or with the naked eye. Many variations of the method have been developed. ELISA,Assay, Enzyme-Linked Immunosorbent,Assays, Enzyme-Linked Immunosorbent,Enzyme Linked Immunosorbent Assay,Enzyme-Linked Immunosorbent Assays,Immunosorbent Assay, Enzyme-Linked,Immunosorbent Assays, Enzyme-Linked
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000907 Antibodies, Bacterial Immunoglobulins produced in a response to BACTERIAL ANTIGENS. Bacterial Antibodies
D019453 Escherichia coli O157 A verocytotoxin-producing serogroup belonging to the O subfamily of Escherichia coli which has been shown to cause severe food-borne disease. A strain from this serogroup, serotype H7, which produces SHIGA TOXINS, has been linked to human disease outbreaks resulting from contamination of foods by E. coli O157 from bovine origin. E coli O157,E coli O157-H7,Escherichia coli O157-H7

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