The study of the lipid membrane charge effect when creating liposomes with oxaliplatin
The fight against cancer diseases is one of the most urgent problems of modern pharmacy. One of the basic standards of treatment is surgery in order to remove tumours with chemotherapeutic agents for suppression of disease manifestations. One of the ways for reducing toxicity of cytostatics is their incorporation into liposomes – nanoparticles composed of the lipid bilayer surrounding the internal cavity with the aqueous medium. Oxaliplatin is a platinum-containing chemotherapeutic agent of the 3-rd generation used as monotherapy or in combination with other drugs. When creating liposomal drugs the beginning of the work is associated with the study of the composition of the lipid membrane. The aim of the work is to study the effect of the lipid membrane charge when creating liposomes with oxaliplatin. Four types of differently charged lipid membranes for liposomal oxaliplatin formulation have been tested. Liposomes were formed by the lipid layer method with further high pressure homogenization. As a criterion the encapsulation degree was used. The highest encapsulation degree has been determined in negatively charged liposomes with the lipid membrane modified by dipalmitoyl phosphatidylglycerol (DPPG).
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