title: Preparation, characterization and in vivo distribution of solid lipid nanoparticles loaded with cisplatin.
abstract: An emulsification dispersion-ultrasonication method was employed to prepare solid lipid nanoparticles (SLN) loaded with cisplatin. The conventional antitumor drug cisplatin (CDDP) was incorporated into SLN to obtain a targeted and less toxic drug delivery system. The CDDP-SLNs were spherical and uniform in transmission electron microscopy (TEM) photography. The mean particle size and zeta potential were 121 +/- 15 nm, and -46.4 +/- 10.3 mV, respectively. Also, a novel cation exchange resin method was adopted to investigate the encapsulation efficiency (EE%) of the SLN. This method is based on the principle of cation exchange between drugs and resins, and the EE% of the optimal formulation was 82.3%. The in vitro release profile revealed that CDDP was released from SLN efficiently and completely in normal saline (NS) compared with other release media. A pre-column derivatization HPLC method was established for in vivo assay of cisplatin. A tissue distribution study was conducted in male rats after iv administration of 8 mg mL(-1) CDDP-SLN and cisplatin NS, and it was found that CDDP-SLN has a targeted effect to the liver as well as a low concentration in the kidney in rats. These results indicated that emulsification dispersion-ultrasonication is a simple, easy, available and effective method for preparing CDDP-SLN, and the cation exchange resin method is a feasible and suitable method to evaluate the EE% of CDDP-SLN. CDDP-SLN prepared by this method was proved to be a targeted and less toxic drug delivery system.
authors.affiliation: College of Pharmacy, Shenyang Pharmaceutical University, Shenyang, PR China. sugar_tianjie@163.com
authors.forename: Jie
authors.initials: J
authors.lastname: Tian
authors.forename: Xiujuan
authors.initials: X
authors.lastname: Pang
authors.forename: Kefu
authors.initials: K
authors.lastname: Yu
authors.forename: Linjie
authors.initials: L
authors.lastname: Liu
authors.forename: Jun
authors.initials: J
authors.lastname: Zhou
mesh_terms: D000327:Adsorption; D000818:Animals; D000970:Antineoplastic Agents / Q000008:administration & dosage* / Q000493:pharmacokinetics*; D002945:Cisplatin / Q000008:administration & dosage* / Q000493:pharmacokinetics*; D004339:Drug Compounding; D004563:Electrochemistry; D007275:Injections, Intravenous; D007475:Ion Exchange Resins; D008297:Male; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles; D010316:Particle Size; D051381:Rats; D017208:Rats, Wistar; D012995:Solubility; D014018:Tissue Distribution
chemical_list: D000970:Antineoplastic Agents; D007475:Ion Exchange Resins; D002945:Cisplatin