Bioresorbable copolymer of L-lactide and ε-caprolactone for controlled paclitaxel delivery

Acta Pol Pharm. 2014 Nov-Dec;71(6):1023-8.

Abstract

Bioresorbable, aliphatic polyesters are known in medicine where serve as orthopedic devices (e.g., rods, pins and screws) or sutures and staples in wound closure. Moreover, such materials are extensively stud- ied as scaffolds--three-dimensional structures for tissue engineering but also drug delivery systems (DDS). The aim of this study was to determine the release profile of paclitaxel, one of the anti-inflammatory, antiprolifera- tive and anti-restenotic agent, from biocompatible copolymer of L-lactide and ε-caprolactone that seems to be very attractive especially for minimally invasive surgery due to its potential shape-memory property. The influ- ence of drug on copolymer hydrolytic degradation was also analyzed. Three types of matrices (3%, 5% of PTX and without drug) were prepared by solvent-casting method and degraded in vitro. The physicochemical changes of copolymer were analyzed by means of nuclear magnetic resonance spectroscopy (NMR), gel per- meation chromatography (GPC) and differential scanning calorimetry (DSC). The amount of drug released into media was monitored with the use of high-pressure liquid chromatography (HPLC). Similar drug release pro- files were obtained for matrices with paclitaxel. The drug-containing matrices degraded slightly slower than drug free matrices, regardless PTX content. Results of this work may be helpful in designing new bioresorbable paclitaxel delivery system applied in anti-cancer therapy or drug-eluting stents technology.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antineoplastic Agents, Phytogenic / administration & dosage*
  • Biocompatible Materials / chemistry*
  • Calorimetry, Differential Scanning
  • Chromatography, Gel
  • Chromatography, High Pressure Liquid
  • Delayed-Action Preparations
  • Drug Carriers / chemistry*
  • Drug Liberation
  • Magnetic Resonance Spectroscopy
  • Paclitaxel / administration & dosage*
  • Polyesters / chemistry*

Substances

  • Antineoplastic Agents, Phytogenic
  • Biocompatible Materials
  • Delayed-Action Preparations
  • Drug Carriers
  • Polyesters
  • lactide-caprolactone copolymer
  • Paclitaxel