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Biomedical subjects

A M Pfister

Publications and source records attributed to A M Pfister.

3 recordsLinked to original sources

Plasma exchange: an important part of the therapeutic procedure in a small child with autoimmune hemolytic anemia.

The case history of a child with autoimmune hemolytic anemia with complement activating warm antibodies of the pdl type is presented. This child also had giant cell hepatitis. Although plasma exchange is not curative in such a patient, the removal of antibodies and bilirubin by means of plasma exchange has alleviated the patient's condition on two occasions (at age 19 and 33 months respectively), and has permitted the institution of effective immunosuppression. A technique for plasma exchange is described, which by use of plasma filters and the usual hemodialysis equipment allows to safely perform the procedure in any pediatric hemodialysis unit. Its use in this patient stresses the technical practicability even in very young children. It is suggested that plasma exchange, if indicated, should be considered more often as part of a therapeutic concept.

Anemia, Hemolytic, Autoimmune↗

Cold agglutinin Vo. An IgM lambda monoclonal human antibody recognizing a sialic acid determined antigen fully expressed on newborn erythrocytes.

An IgM lambda cold agglutinin reacted preferentially with newborn (i cord) and i adult erythrocytes. The whole serum of patient Vo and the antibody isolated by warm elution reacted moderately with native and neuraminidase-treated red cells but strongly with papainized red cells. Papainization of erythrocytes enhanced markedly the susceptibility of the corresponding antigen not only to antibody binding but also to the action of neuraminidase, indicating that sialic acid is the immunodominant component of the cryptic antigen. The cold agglutinin Vo is the first example of a human monoclonal antibody recognizing a sialic acid-dependent, developmentally regulated antigen fully expressed on newborn erythrocytes.

Agglutinins↗