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  • Title: Properties of guinea pig 7S antibodies. III. Identification of antibodies involved in complement fixation and hemolysis.
    Author: BLOCH KJ, KOURILSKY FM, OVARY Z, BENACERRAF B.
    Journal: J Exp Med; 1963 Jun 01; 117(6):965-81. PubMed ID: 13971679.
    Abstract:
    Guinea pig 7Sgamma(2) antibodies were demonstrated to fix complement in the presence of antigen and to sensitize antigen-coated, tanned erythrocytes for lysis in the presence of complement; guinea pig 7Sgamma(1) antibodies did not participate in these reactions. Gamma-2 antibodies were more efficient in provoking hemorrhagic necrosis in reverse passive Arthus reactions than equal amounts of non-complement-fixing gamma-1 antibodies. Unlike anaphylaxis in the guinea pig, both guinea pig 7Sgamma(1) and 7Sgamma(2) antibodies provoked passive cutaneous anaphylactic reactions in the rat. Efficient hemolytic activity attributable to 7S guinea pig anti-sheep erythrocyte antibodies migrated faster than the peak of complement-fixing activity, but slower than the peak of PCA activity in starch block electrophoresis. It is uncertain whether this activity is a function of a third type of antibody produced in response to the particulate property of the antigen or whether it is due to the antigenic heterogeneity of the erythrocyte cell membrane.
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