Possible implications in the use of exogenous phospholipids

Oral treatment of haemophilia A by gastrointestinal absorption of factor VIII entrapped in liposomes

Factor-VIII-loaded liposomes were given orally to a patient with severe haemophilia A. Plasma concentrations of factor VIII rose to therapeutically effective levels, that persisted for 50 hours.

Liposomes in immunology: multilamellar phosphatidylcholine liposomes as a simple, biodegradable and harmless adjuvant without any immunogenic activity of its own

Multilamellar phosphatidylcholine liposomes were coated with the antigens human serum albumin (HSA) or bovine gamma globulin (BGG) simply by suspending the liposomes in a solution of the antigens. Antigen coated phosphatidylcholine liposomes showed nearly the same adjuvant activity after intravenous injection as liposomes of a more complex phospholipid composition. Since phosphatidylcholine liposomes are biodegradable, harmless, easily obtainable, have no immunogenic activity of their own and may be administered intravenously, they seem to be a promising immunoadjuvant.