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Ricke SC, Schaefer DM. Characterization of Egg Yolk Antibodies for Detection and Quantification of Selenomonas ruminantium by Using an Enzyme-Linked Immunosorbent Assay. Appl Environ Microbiol. 1990;56(9):2795-800doi: 10.1128/aem.56.9.2795-2800.1990.
Ricke, S. C., & Schaefer, D. M. (1990). Characterization of Egg Yolk Antibodies for Detection and Quantification of Selenomonas ruminantium by Using an Enzyme-Linked Immunosorbent Assay. Applied and environmental microbiology, 56(9), 2795-800. https://doi.org/10.1128/aem.56.9.2795-2800.1990
Ricke, S C, and Schaefer, D M. "Characterization of Egg Yolk Antibodies for Detection and Quantification of Selenomonas ruminantium by Using an Enzyme-Linked Immunosorbent Assay." Applied and environmental microbiology vol. 56,9 (1990): 2795-800. doi: https://doi.org/10.1128/aem.56.9.2795-2800.1990
Ricke SC, Schaefer DM. Characterization of Egg Yolk Antibodies for Detection and Quantification of Selenomonas ruminantium by Using an Enzyme-Linked Immunosorbent Assay. Appl Environ Microbiol. 1990 Sep;56(9):2795-800. doi: 10.1128/aem.56.9.2795-2800.1990. PMID: 16348287; PMCID: PMC184845.
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Appl Environ Microbiol. 1990 Sep;56(9):2795-800. doi: 10.1128/aem.56.9.2795-2800.1990.

Characterization of Egg Yolk Antibodies for Detection and Quantification of Selenomonas ruminantium by Using an Enzyme-Linked Immunosorbent Assay.

Applied and environmental microbiology

S C Ricke, D M Schaefer

Affiliations

  1. Department of Meat and Animal Science and Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin 53706.

PMID: 16348287 PMCID: PMC184845 DOI: 10.1128/aem.56.9.2795-2800.1990

Abstract

The specificity of polyclonal antibodies prepared against strains of Selenomonas ruminantium, the effect of assay conditions, and quantification of individual strains in mixed-cell suspensions of selenomonad strains were examined in this study. Whole-cell suspensions were prepared with pure cultures of S. ruminantium PC18, HD(4), GA192, and D. Each cell suspension was injected into a Leghorn laying hen, and polyclonal antibodies were harvested from eggs laid in week 3 or 7 following initial immunization. Antibodies made to the S. ruminantium strains readily discerned the homologous strain from the heterologous strains. Cross-reactivity among antibodies and the heterologous S. ruminantium strains ranged from 5 to 26%. Among non-S. ruminantium species, cross-reactivity of S. ruminantium antibodies was greatest with Selenomonas sputigena (3 to 34%) and Succinivibrio dextrinosolvens (0 to 37%). Antibodies made to strains GA192 and D were used to quantify a mixture of the two strains. Both antibodies responded to graded concentrations of the homologous antigen in the biculture mixtures in accord with the change in the direct cell counts for each strain (strain D, R = 0.92; strain GA192, R = 0.90). This enzyme-linked immunosorbent assay enabled concurrent and accurate quantification of two strains of S. ruminantium subsp. ruminantium in a mixed-cell suspension with a precision of much less than 1 order of magnitude.

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