Recently, the potential application of deferoxamine (DFO) in several iron dysregulation diseases has been highlighted. However, DFO presents significant limitations in clinical use due to its poor absorption in the gut and very short plasma half-life. To overcome these problems, the feasibility of chitosan/alginate hydrogels as prolonged delivery systems of DFO was investigated. Hydrogel alone or co-formulated with poly(d,l-lactide-co-glycolide) microspheres were prepared and studied in vitro. The influence of the preparation methods on the performance of composite hydrogels on controlled DFO release was explored. Spray-dried microspheres based on poly(d,l-lactide-co-glycolide) were able to encapsulate DFO, a highly water soluble drug. Nevertheless, only the composite hydrogels managed to provide sustained drug release. The inclusion of microspheres into pre-formed chitosan/alginate hydrogel provided the most efficient delivery system; the drug released from microspheres is strongly entrapped in the hydrogel network and slowly released by diffusion.

Composite chitosan/alginate hydrogel for controlled release of deferoxamine: a system to potentially treat iron dysregulation diseases / Rassu, Giovanna; Salis, A; Porcu, E. P.; Giunchedi, Paolo; Roldo, M; Gavini, Elisabetta. - In: CARBOHYDRATE POLYMERS. - ISSN 0144-8617. - 136:(2016), pp. 1338-1347. [10.1016/j.carbpol.2015.10.048]

Composite chitosan/alginate hydrogel for controlled release of deferoxamine: a system to potentially treat iron dysregulation diseases

RASSU, Giovanna;GIUNCHEDI, Paolo;GAVINI, Elisabetta
2016-01-01

Abstract

Recently, the potential application of deferoxamine (DFO) in several iron dysregulation diseases has been highlighted. However, DFO presents significant limitations in clinical use due to its poor absorption in the gut and very short plasma half-life. To overcome these problems, the feasibility of chitosan/alginate hydrogels as prolonged delivery systems of DFO was investigated. Hydrogel alone or co-formulated with poly(d,l-lactide-co-glycolide) microspheres were prepared and studied in vitro. The influence of the preparation methods on the performance of composite hydrogels on controlled DFO release was explored. Spray-dried microspheres based on poly(d,l-lactide-co-glycolide) were able to encapsulate DFO, a highly water soluble drug. Nevertheless, only the composite hydrogels managed to provide sustained drug release. The inclusion of microspheres into pre-formed chitosan/alginate hydrogel provided the most efficient delivery system; the drug released from microspheres is strongly entrapped in the hydrogel network and slowly released by diffusion.
2016
Composite chitosan/alginate hydrogel for controlled release of deferoxamine: a system to potentially treat iron dysregulation diseases / Rassu, Giovanna; Salis, A; Porcu, E. P.; Giunchedi, Paolo; Roldo, M; Gavini, Elisabetta. - In: CARBOHYDRATE POLYMERS. - ISSN 0144-8617. - 136:(2016), pp. 1338-1347. [10.1016/j.carbpol.2015.10.048]
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/59775
Citazioni
  • ???jsp.display-item.citation.pmc??? 10
  • Scopus 91
  • ???jsp.display-item.citation.isi??? 83
social impact