TY - JOUR
T1 - Characterization of a liposome-based formulation of oxaliplatin using capillary electrophoresis
T2 - encapsulation and leakage
AU - Franzen, Ulrik
AU - Nguyen, Trinh Thi Nhu Tam
AU - Vermehren, Charlotte
AU - Gammelgaard, Bente
AU - Østergaard, Jesper
PY - 2011/4/28
Y1 - 2011/4/28
N2 - A capillary electrophoresis-based method to characterize a PEGylated liposomal drug formulation of the anti-cancer agent oxaliplatin was developed. Pharmaceutical characterization in terms of determination of the free and total oxaliplatin concentrations in the liposomal formulation was successfully performed allowing calculation of the percentage of encapsulated drug and encapsulation efficiency. The trapping efficiency was likewise calculated. The capillary electrophoresis method allowed liposome characterization in the intended formulation media (sucrose solution with low electrolyte concentration), and the attained results were consistent with inductively coupled plasma mass spectrometry measurements. Accelerated drug leakage studies were initiated by the sonication of the PEGylated formulation, using an ultrasound probe, subsequently the drug leakage was determined by capillary electrophoresis. The results obtained with the PEGylated liposomes demonstrate that capillary electrophoresis may be a useful tool for the characterization of liposomal drug formulations.
AB - A capillary electrophoresis-based method to characterize a PEGylated liposomal drug formulation of the anti-cancer agent oxaliplatin was developed. Pharmaceutical characterization in terms of determination of the free and total oxaliplatin concentrations in the liposomal formulation was successfully performed allowing calculation of the percentage of encapsulated drug and encapsulation efficiency. The trapping efficiency was likewise calculated. The capillary electrophoresis method allowed liposome characterization in the intended formulation media (sucrose solution with low electrolyte concentration), and the attained results were consistent with inductively coupled plasma mass spectrometry measurements. Accelerated drug leakage studies were initiated by the sonication of the PEGylated formulation, using an ultrasound probe, subsequently the drug leakage was determined by capillary electrophoresis. The results obtained with the PEGylated liposomes demonstrate that capillary electrophoresis may be a useful tool for the characterization of liposomal drug formulations.
KW - Former Faculty of Pharmaceutical Sciences
U2 - 10.1016/j.jpba.2010.12.037
DO - 10.1016/j.jpba.2010.12.037
M3 - Journal article
C2 - 21282028
SN - 0731-7085
VL - 55
SP - 16
EP - 22
JO - Journal of Pharmaceutical and Biomedical Analysis
JF - Journal of Pharmaceutical and Biomedical Analysis
IS - 1
ER -
