A surface modification of clozapine-loaded nanocapsules improves their efficacy: A study of formulation development and biological assessment.
Colloids Surf B Biointerfaces
; 145: 748-756, 2016 Sep 01.
Article
em En
| MEDLINE
| ID: mdl-27295491
ABSTRACT
This work aimed to develop nanocapsules (NC) coated with polysorbate 80 (P80), cationic chitosan (CS) or polyethylene glycol (PEG) using clozapine (CZP) as the drug model. The zeta potential, pH and encapsulation efficiency were directly affected by the CS coating. Using the bag dialysis method, the in vitro CZP release from CS-coated nanocapsules was similar to the PEG-coated at pH 7.4. Nanocapsules coated with PEG and CS exhibited an increased action duration compared to the P80-coated nanocapsules in pseudo-psychosis induced by d,l-amphetamine in rats. When comparing both groups, the group administered CS-coated nanocapsules showed better activity than the PEG-coated nanocapsules at 6, 10 and 12h after d,l-amphetamine administration. The pharmacokinetic assessment in rats demonstrated that the observed half-lives were free CZPPalavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Portadores de Fármacos
/
Clozapina
Idioma:
En
Revista:
Colloids Surf B Biointerfaces
Ano de publicação:
2016
Tipo de documento:
Article