Controlled release of triamcinolone acetonide from polyurethane implantable devices: application for inhibition of inflammatory-angiogenesis.

Pinto, Flávia Carmo Horta; Cunha Júnior, Armando da Silva; Oréfice, Rodrigo Lambert; Ayres, Eliane; Andrade, Silvia Passos de; Lima, Luiza Dias da Cunha; Moura, Sandra Aparecida Lima de; Silva, Gisele Rodrigues da

Controlled release of triamcinolone acetonide from polyurethane implantable devices: application for inhibition of inflammatory-angiogenesis.

Date

2012

Authors

Pinto, Flávia Carmo Horta

Cunha Júnior, Armando da Silva

Oréfice, Rodrigo Lambert

Ayres, Eliane

Andrade, Silvia Passos de

Lima, Luiza Dias da Cunha

Moura, Sandra Aparecida Lima de

Silva, Gisele Rodrigues da

Abstract

The purpose of this study was to develop triamcinolone acetonide-loaded polyurethane implants (TA PU implants) for the local treatment of different pathologies including arthritis, ocular and neuroinflammatory disorders. The TA PU implants were characterized by FTIR, SAXS and WAXS. The in vitro and in vivo release of TA from the PU implants was evaluated. The efficacy of TA PU implants in suppressing inflammatory-angiogenesis in a murine sponge model was demonstrated. FTIR results revealed no chemical interactions between polymer and drug. SAXS results indicated that the incorporation of the drug did not disturb the polymer morphology. WAXS showed that the crystalline nature of the TA was preserved after incorporation into the PU. The TA released from the PU implants efficiently inhibited the inflammatory-angiogenesis induced by sponge discs in an experimental animal model. Finally, TA PU implants could be used as local drug delivery systems because of their controlled delivery of TA.

Citation

PINTO, F. C. H. et al. Controlled release of triamcinolone acetonide from polyurethane implantable devices: application for inhibition of inflammatory-angiogenesis. Journal of Materials Science. Materials in Medicine, v. 6, p. 1431-1445, 2012. Disponível em: <https://link.springer.com/article/10.1007%2Fs10856-012-4615-5>. Acesso em: 20 mar. 2017.