Pharmacokinetics, tissue distribution and anti-tumour efficacy of paclitaxel delivered by polyvinylpyrrolidone solid dispersion

The Journal of Pharmacy and Pharmacology
Xiang-Rui LiuQiang Zhang

Abstract

Paclitaxel is a potent anti-cancer drug that has exhibited clinical activity against several tumours. Unfortunately, serious side effects are associated with Taxol, the commercial formulation of paclitaxel, which contains Cremophor EL (CrEL). Currently, the main focus of developing paclitaxel formulations is on improving efficacy and reducing toxicity. A novel, Cremophor-free, paclitaxel solid dispersion (PSD) was prepared in our laboratory previously. The primary aim of this study was to evaluate the pharmacokinetics, tissue distribution, acute toxicity and anti-tumour efficacy of the PSD compared with Taxol. SD rats were used to examine the pharmacokinetics and tissue distribution of PSD. The acute toxicity of PSD was evaluated in ICR mouse. The anti-tumor activity of PSD was assessed in an in vivo anti-tumor nude mice model inoculated with human SKOV-3 cancer cells. The two formulations presented different pharmacokinetic behaviour. The plasma AUC of paclitaxel in the PSD was 5.84-fold lower than that of Taxol, and the mean residence time, total body clearance and apparent volume of distribution of paclitaxel in the PSD were increased by 1.73, 4.67 and 8.57 fold, respectively. However, the two formulations showed similar tis...Continue Reading

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Citations

Feb 20, 2013·Clinical Pharmacokinetics·Frederik E StuurmanJan H M Schellens
Dec 28, 2012·International Journal of Nanomedicine·Dan LiQiang Zhang

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