title: Production and in vitro characterization of lisinopril-loaded nanoparticles for the treatment of restenosis in stented coronary arteries.
abstract: Lisinopril, an angiotensin converting enzyme (ACE) inhibitor drug, was encapsulated in poly(lactide-co-glicolide) (PLGA) nanoparticles (NP) for site-specific delivery by catheters in prevention of restenosis. NP were prepared by emulsification-diffusion method. The PLGA type, stabilizing agent type and its concentration were studied as process variables. The z-average particle size varied between 265-412 nm. The highest zeta potential was seen in NP prepared with Pluronic F-68. None of the studied variables or their interactions had a significant effect on the particle size while all had main effect on the zeta potential. The highest entrapment efficiency was 93% and all studied variables and their interactions except PLGA type and its interaction with the stabilizer type had significant effects on the loading. Baker-Lonsdale model was the most appropriate model for release of lisinopril from NP. Five per cent PLGA 75:25 and 5% Pluronic F-68 showed promising results for 21 days release of lisinopril as an anti-restenotic agent.
authors.affiliation: Faculty of Pharmacy, Isfahan Pharmaceutical Sciences Research Center and Department of Pharmaceutics, Isfahan University of Medical Sciences, Isfahan, Iran. varshosaz@pharm.mui.ac.ir
authors.forename: J
authors.initials: J
authors.lastname: Varshosaz
authors.forename: M
authors.initials: M
authors.lastname: Soheili
mesh_terms: D020341:Absorbable Implants; D002316:Cardiotonic Agents / Q000627:therapeutic use*; D023903:Coronary Restenosis / Q000517:prevention & control*; D003331:Coronary Vessels / Q000187:drug effects / Q000503:physiopathology*; D006801:Humans; D019344:Lactic Acid; D017706:Lisinopril / Q000627:therapeutic use*; D008855:Microscopy, Electron, Scanning; D053758:Nanoparticles; D011100:Polyglycolic Acid; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D015607:Stents
chemical_list: D002316:Cardiotonic Agents; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011100:Polyglycolic Acid; D019344:Lactic Acid; D017706:Lisinopril