University of Texas System

Rajiv Nayar

Alan J Schroit

Isaiah J Fidler

Kiyoshi Morikawa

Liposome dispersions are prepared from (a) a synthetic phospholipid of the cephaline type in which the amino group is monoacylated with a dicarboxylic acid; (b) a synthetic phospholipid of the cephaline type; and (c) one or more compounds having pharmacological activity. The mixture optionally can contain phospholipids of natural sources and a pharmaceutical carrier solution buffered to pH 7.0 to 7.8.

Pharmaceutical compositions consisting of acylated phospholipids

The present invention relates to pharmaceutical administration systems containing phosphatidylserine and phosphatidylcholine or phosphatidylethanolamine derivatives in the form of liposomes which encapsulate chemotactic peptides such as N-formyl-L-methionyl-L-leucyl-L-phenylalanine. The liposomes are prepared by conventional dispersion methods. The pharmaceutical administration systems when applied in the form of liposomes stimulate macrophage activity which is especially useful in the cancer therapy for combating metastatic tumor cells and for treatment of chronic infections.

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Houston, TX, United States of America

Rajiv Nayar