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Evaluation of Allergenicity of Egg Yolk Immunoglobulin Y and Other Egg Proteins by Passive Cutaneous Anaphylaxis

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The allergenicity of egg yolk immunoglobulin (IgY) was studied using passive cutaneous anaphylaxis. It was observed that the intact yolk, water soluble fraction of the yolk, whole IgY molecule or its antigen binding (Fab) and crystallizable (pFc) fragments produced by pepsin digestion, elicited low IgE antibody response in mice when compared to egg white, a known allergen. The pFc fragment of IgY was more antigenic than the Fab fragment as determined by ELISA. Low cross-reactivity was also observed between the egg yolk proteins and egg white antibodies. The low IgE antibody response to the egg yolk proteins was associated with a higher suppressor T-lymphocytes or lower helper T-lymphocytes, or both, in comparison to egg white derived lymphocytes.
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Keywords: ALLERGENICITY; EGG PROTEINS; PASSIVE CUTANEOUS ANAPHYLAXIS

Document Type: Research Article

Publication date: June 1, 1999

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