Modulating the release of proteins from a loaded carrier of alginate/gelatin porous spheres immersed in different solutions.
Biomed Mater Eng
; 28(5): 515-529, 2017.
Article
em En
| MEDLINE
| ID: mdl-28854489
ABSTRACT
BACKGROUND:
A biodegradable porous particle for the controlled biofactor delivery which assembly of pores in scaffolds can improve the permeation and diffusion of drugs or growth factors.OBJECTIVE:
Porous-spheres in millimeter scale were prepared by mixing sodium alginate and gelatin interpenetrating networks with cross-linkers; interconnected open pores were fabricated through solvent casting and particulate leaching.METHODS:
Morphological characteristics, degradation, and bovine serum albumin (BSA) release rates of the porous-spheres immersed in three different solutions, namely, deionized distilled water, simulated body fluid (SBF), and phosphate-buffered saline (PBS), were detected.RESULTS:
Porous-spheres with a large amount of gelatin exhibited an increase in water absorption rates without affecting scaffold strength and no cytotoxicity was elicited. Highly interconnected pores with a diameter of 100-200 µm were uniformly distributed in scaffolds. The weight loss in PBS was faster than that in other solutions; the highest release rate of BSA in SBF was observed for 2 h. The release rates also exhibited linear patterns from 2 h to 24 h in all of the groups.CONCLUSIONS:
After 1 d of immersion in solutions, BSA release rates in scaffolds logarithmically decreased for 14 d. The degradation of porous-spheres also showed an inverse pattern.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Soroalbumina Bovina
/
Portadores de Fármacos
/
Alginatos
/
Liberação Controlada de Fármacos
/
Gelatina
Idioma:
En
Revista:
Biomed Mater Eng
Ano de publicação:
2017
Tipo de documento:
Article