Antibody-dependent cell-mediated destruction of human erythrocytes sensitized in ABO and rhesus fetal-maternal incompatibilities
Antibody-dependent cell-mediated cytotoxicity (ADCMC) was measured in a 51Cr-release assay with antibody-sensitized human red blood cells (RBC) as target cells and nonimmune isologous or autologous mononuclear peripheral blood leukocytes (MPBL) as effector cells. ADCMC was readily demonstrable withi...
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Published in | Pediatric research Vol. 10; no. 9; pp. 791 - 796 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
United States
01.09.1976
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Subjects | |
Online Access | Get full text |
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Summary: | Antibody-dependent cell-mediated cytotoxicity (ADCMC) was measured in a 51Cr-release assay with antibody-sensitized human red blood cells (RBC) as target cells and nonimmune isologous or autologous mononuclear peripheral blood leukocytes (MPBL) as effector cells. ADCMC was readily demonstrable within 6 hr and was independent of exogenous complement (C'). The specificity of the ADCMC reaction was determined by the antiserum employed. Anti-A, anti-B, anti-D, and anti-c sera were all active in ADCMC; the specific lysis was between 35 and 50% with antiserum dilution of 1/1,000, using 10(5) target cells and 10(6) MPBL. Anti-C, anti-E, and anti-e sera had no detectable activity. Sephadex column separation suggested that this activity was by antibodies of the IgG class. Cord RBC from infants with RhD fetal-maternal incompatibility were lysed by autologous or isologous MPBL in the absence of exogenous antiserum. ADCMC was between 22% and42% in cases with high direct Coombs' test, but was negative with low direct Coombs' test as in five cases of ABO incompatibility. |
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ISSN: | 0031-3998 1530-0447 |
DOI: | 10.1203/00006450-197609000-00006 |