Immunoabsorption in an Extracorporeal Plasma Perfusion System: In Vitro Studies |
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Authors: | Edwin A Burgstaler Alvaro A Pineda |
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Institution: | Blood Bank and Transfusion Services, Mayo Clinic and Mayo Foundation, Rochester, Minnesota, U.S. A. |
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Abstract: | A rechargeable plasma perfusion system developed to remove IgG immunoglobulins is described. Partially purified protein A was covalently bonded on two separate carriers, Sepharose 6MB and carboxyl acrylic beads. Plasma from a patient with IgG multiple myeloma was perfused through the Sepharose-protein. A column, and this resulted in a maximum removal of 177% of the estimated removal capacity of the column. Plasma from the same source was perfused through the acrylic bead-protein. A column and yielded an average of 220% of the estimated removal capacity of the column. In addition, plasma from a normal subject and from six patients with various autoimmune diseases was perfused through the Sepharose–protein A column, and varying percent removal was obtained. A detailed procedure for covalent coupling of purified protein A to carboxylated acrylic beads is also given. |
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Keywords: | plasma perfusion autoimmune disease affinity chromatography immunoabsorption acrylic beads |
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