[Demonstration of an abnormal increase of anti-T hemagglutinin titers in malaria infected patients].

An increased frequency of high titers of antibodies against A, B, ORh+ trypsinized, and ORh+ neuraminidase-treated human red blood cells was observed in the sera of Africans living in a malaria endemic area, and Europeans with primary malaria attacks. In the latter group, titers of agglutinins against neuraminidase treated RBC were increased in 84% of individuals and were of the IgM class. Inhibition experiments with beta-D-galactose and lactose showed that this agglutinin was directed to the T antigen of human RBC. Its possible implication in malaria related anemia is discussed.