We obtained anti-IgG Sepharose-an immunosorbent with sheep monospecifi
c polyclonal antibodies against human IgG-for extracorporeal removal o
f human IgG. Appropriate conditions for effective usage of the immunos
orbent were chosen. Binding capacity and selectivity of anti-IgG Sepha
rose were determined and compared with the corresponding properties of
other sorbents for IgG apheresis; these properties appeared to be acc
eptable for immunoapheresis procedures. Methods for therapeutic applic
ation of anti-IgG Sepharose are described. Anti-IgG Sepharose is expec
ted to be effective when used in immunoapheresis procedures for treatm
ent of autoimmune diseases and for preparation of patients for organ t
ransplantation. (C) 1997 Elsevier Science Ltd.