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Evaluation of antibodies reactive with Campylobacter jejuni in Egyptian diarrhea patients. 1997

T F Ismail, and M O Wasfy, and B A Oyofo, and M M Mansour, and H M El-Berry, and A M Churilla, and S S Eldin, and L F Peruski
U.S. Naval Medical Research Unit No. 3, Cairo, Egypt. namru-rsd@centcom.dsaa.osd.mil

Serum and stool samples were collected from 128 individuals: 96 diarrhea patients and 32 apparently healthy controls. Stool specimens were cultured for enteric bacterial pathogens, while sera were screened by enzyme-linked immunosorbent assay for Campylobacter jejuni-reactive antibodies. Of 28 diarrhea patients who demonstrated C. jejuni-reactive antibodies (titers, > 100), 14 were culture positive for this organism. The 32 healthy controls showed significantly lower antibody titers (P < 0.05) with the exception of 10 subjects who were culture positive for C. jejuni and had reactive immunoglobulin M (IgM) (6 subjects) and IgG (7 subjects). IgA was not detected in those 10 individuals (asymptomatic). Avidity was expressed as the thiocyanate ion concentration required to inhibit 50% of the bound antibodies. The avidity was higher in symptomatic patients than asymptomatic healthy controls. IgG was less avid (0.92 M) compared to IgM (0.1 M) and IgA (1.1 M), with no correlation between antibody titer and avidity. However, the thiocyanate ion concentration required for the complete inhibition of IgG (5 M)-bound antibodies was higher than that of IgA (2 M) and IgM (3 M). This study also shows that C. jejuni antibodies were variably cross-reactive with Escherichia coli, Shigella flexneri, Shigella sonnei, and Neisseria meningitidis in addition to Campylobacter coli and Campylobacter rectus.

UI MeSH Term Description Entries
D007070 Immunoglobulin A Represents 15-20% of the human serum immunoglobulins, mostly as the 4-chain polymer in humans or dimer in other mammals. Secretory IgA (IMMUNOGLOBULIN A, SECRETORY) is the main immunoglobulin in secretions. IgA,IgA Antibody,IgA1,IgA2,Antibody, IgA
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
D002169 Campylobacter Infections Infections with bacteria of the genus CAMPYLOBACTER. Campylobacter Infection,Campylobacteriosis,Infections, Campylobacter,Campylobacterioses,Infection, Campylobacter
D003906 Developing Countries Countries in the process of change with economic growth, that is, an increase in production, per capita consumption, and income. The process of economic growth involves better utilization of natural and human resources, which results in a change in the social, political, and economic structures. LMICs,Less-Developed Countries,Low Income Countries,Low and Middle Income Countries,Lower-Middle-Income Country,Middle Income Countries,Third-World Countries,Under-Developed Countries,Developing Nations,Least Developed Countries,Less-Developed Nations,Third-World Nations,Under-Developed Nations,Countries, Middle Income,Countries, Third-World,Country, Least Developed,Country, Less-Developed,Country, Low Income,Country, Lower-Middle-Income,Country, Middle Income,Country, Third-World,Country, Under-Developed,Developed Country, Least,Developing Country,Developing Nation,Least Developed Country,Less Developed Countries,Less Developed Nations,Less-Developed Country,Less-Developed Nation,Low Income Country,Lower Middle Income Country,Lower-Middle-Income Countries,Middle Income Country,Nation, Less-Developed,Nation, Third-World,Nation, Under-Developed,Third World Countries,Third World Nations,Third-World Country,Third-World Nation,Under Developed Countries,Under Developed Nations,Under-Developed Country,Under-Developed Nation
D003967 Diarrhea An increased liquidity or decreased consistency of FECES, such as running stool. Fecal consistency is related to the ratio of water-holding capacity of insoluble solids to total water, rather than the amount of water present. Diarrhea is not hyperdefecation or increased fecal weight. Diarrheas
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
D000937 Antigen-Antibody Reactions The processes triggered by interactions of ANTIBODIES with their ANTIGENS. Antigen Antibody Reactions,Antigen-Antibody Reaction,Reaction, Antigen-Antibody,Reactions, Antigen-Antibody
D000942 Antigens, Bacterial Substances elaborated by bacteria that have antigenic activity. Bacterial Antigen,Bacterial Antigens,Antigen, Bacterial

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