Summary
Utilization of the anaphylactic reaction for distinguishing tumor antigens from antigens of normal tissues requires the preliminary investigation of 2 problems: 1) how should desensitization against “major” antigens be performed in order to be sure of its completeness, and 2) how does such desensitization affect the sensitivity of the animal to “minor” antigens? Experiments were carried out on guinea pigs which were sensitized by mixtures of two antigens (foreign serums, tissue nucleoproteins) mixed in different proportions. It was demonstrated that the desensitizing dose of a “major” antigen is several times as great as the shocking dose, and therefore that repeated injection is necessary to bring about complete desensitization. This causes a pronounced decrease of the sensitivity to the “minor” antigen. Therefore it is necessary to increase the dose of the preparation containing the mixture of antigens (for example, a tumor extract) in order to obtain a definite anaphylatic reaction. These findings should be taken into consideration in employing anaphylaxis for the demonstration of antigenic differences between tumors and normal tissues.
Similar content being viewed by others
Literature Cited
Ioffe, V. I., Biull. Eksptl. Biol. i Med. 1957, 44, No. 9, 12–15. Original Russian pagination. See C. B. Translation.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Ioffe, V.I., Kopytovskaia, L.P. The problem of detection of tissue antigens. Bull Exp Biol Med 45, 74–77 (1958). https://doi.org/10.1007/BF00785980
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00785980