title: New poly(ester-amide) copolymers modified with polyether (PEAE) for anticancer drug encapsulation.
abstract: New poly(ester-amide) copolymers modified with polyethers were developed for carboplatin encapsulation. These new copolymers contain hydrophobic blocks made of tyrosine derivative and dimer fatty acid, and poly(ethylene glycol) (PEG) as hydrophilic blocks. Short-term hydrolytic degradation revealed high water absorption, slight increase of pH of simulated body fluid and change of sample shape, which indicated the erosive mechanism of polymers degradation. Poly(ester-amide)-PEG copolymers were used for microspheres preparation and carboplatin encapsulation. A double emulsification process was used to produce microspheres with an average diameter of 20-30 μm. It was found that the amount of drug released was controlled by the molecular mass of PEG used for microspheres preparation. Mathematical models were used to elucidate the release mechanism of the carboplatin from the microspheres. The results demonstrate that poly(ester-amide)-PEG copolymers may be used for targeted carboplatin encapsulation and release.
authors.affiliation: a Chair and Department of Gynaecological Surgery and Gynaecological Oncology of Adults and Adolescents , Pomeranian Medical University , Szczecin , Poland.
authors.forename: Anita
authors.initials: A
authors.lastname: Chudecka-Głaz
authors.affiliation: b Division of Biomaterials and Microbiological Technologies , West Pomeranian University of Technology, Nanotechnology Centre for Research and Education , Szczecin , Poland.
authors.forename: Joanna
authors.initials: J
authors.lastname: Szczeblińska
authors.affiliation: a Chair and Department of Gynaecological Surgery and Gynaecological Oncology of Adults and Adolescents , Pomeranian Medical University , Szczecin , Poland.
authors.forename: Aneta
authors.initials: A
authors.lastname: Cymbaluk-Płoska
authors.affiliation: c Department of Chemistry, New Jersey Centre for Biomaterials , Rutgers, The State University of New Jersey , Piscataway , NJ , USA.
authors.forename: Joachim
authors.initials: J
authors.lastname: Kohn
authors.affiliation: b Division of Biomaterials and Microbiological Technologies , West Pomeranian University of Technology, Nanotechnology Centre for Research and Education , Szczecin , Poland.
authors.forename: Miroslawa
authors.initials: M
authors.lastname: El Fray
mesh_terms: D000577:Amides / Q000737:chemistry*; D000970:Antineoplastic Agents / Q000008:administration & dosage* / Q000737:chemistry; D016190:Carboplatin / Q000008:administration & dosage* / Q000737:chemistry; D003692:Delayed-Action Preparations / Q000737:chemistry*; D004339:Drug Compounding; D065546:Drug Liberation; D004655:Emulsions / Q000737:chemistry; D011091:Polyesters / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry*
chemical_list: D000577:Amides; D000970:Antineoplastic Agents; D003692:Delayed-Action Preparations; D004655:Emulsions; D011091:Polyesters; D011092:Polyethylene Glycols; D016190:Carboplatin
keywords: Biodegradable polymers; drug release; microencapsulation; polymer synthesis