title: [In vitro and in vivo assesemet of sodium norcantharidin lipid microsphere].
abstract: OBJECTIVE
  To prepare lipid microsphere of sodium norcantharidin (NCTD) and then study their characters and pharmacokinetic behavior.
  
  
  METHODS
  Dynamic Light Scattering, HPLC and retrodialysis technique were used to determine the in vitro characters of the NCTD loaded lipid microsphere (LM), such as the particle size, xi-potential, content, incorporation ratio, release profile and changes after dilute. And the plasma concentration was determined by HPLC-MS, compared with NCTD aqueous solution at the same time.
  
  
  RESULTS
  Every property showed that the LM was preferable. The average diameter was about 200 nm. The xi-potential was - 38 mV. The content was close to 100%. And the incorporation ratio exceeded 80%. After i. v. administration of single dose, the pharmacodynamic parameter of LM AUC was 111.28 microg x mL(-1) x h(-1). The data of plasma concentrations showed that the NCTD LM was of two compartment. There was no obvious difference between in vivo parameters of LM and reference solution.
  
  
  CONCLUSIONS
  The NCTD LM was eligible and the character of it in vivo was not changed.
authors.affiliation: School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China.
authors.forename: Li-xin
authors.initials: LX
authors.lastname: Wang
authors.forename: Hai-bing
authors.initials: HB
authors.lastname: He
authors.forename: Xing
authors.initials: X
authors.lastname: Tang
authors.forename: Rui-ying
authors.initials: RY
authors.lastname: Shao
authors.forename: Juan
authors.initials: J
authors.lastname: Wang
authors.forename: Da-wei
authors.initials: DW
authors.lastname: Chen
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000008:administration & dosage / Q000097:blood / Q000493:pharmacokinetics; D019540:Area Under Curve; D019086:Bridged Bicyclo Compounds, Heterocyclic / Q000008:administration & dosage / Q000097:blood / Q000493:pharmacokinetics*; D002851:Chromatography, High Pressure Liquid; D005260:Female; D008055:Lipids; D008297:Male; D013058:Mass Spectrometry; D008863:Microspheres; D010316:Particle Size; D051381:Rats; D017208:Rats, Wistar
chemical_list: D000970:Antineoplastic Agents; D019086:Bridged Bicyclo Compounds, Heterocyclic; D008055:Lipids; C069741:norcantharidin