Data/hora: 09/06/2024 03:47:40

Provedor de dados: | 56
País: | Brazil
Título: | VPA/PLGA microfibers produced by coaxial electrospinning for the treatment of central nervous system injury
Autores: | Reis,K.P.; Sperling,L.E.; Teixeira,C.; Sommer,L.; Colombo,M.; Koester,L.S.; Pranke,P.
Data: | 2020-01-01
Ano: | 2020
Palavras-chave: | Coaxial electrospinning; VPA; Spinal cord injury.
Resumo: | The central nervous system shows limited regenerative capacity after injury. Spinal cord injury (SCI) is a devastating traumatic injury resulting in loss of sensory, motor, and autonomic function distal from the level of injury. An appropriate combination of biomaterials and bioactive substances is currently thought to be a promising approach to treat this condition. Systemic administration of valproic acid (VPA) has been previously shown to promote functional recovery in animal models of SCI. In this study, VPA was encapsulated in poly(lactic-co-glycolic acid) (PLGA) microfibers by the coaxial electrospinning technique. Fibers showed continuous and cylindrical morphology, randomly oriented fibers, and compatible morphological and mechanical characteristics for application in SCI. Drug-release analysis indicated a rapid release of VPA during the first day of the in vitro test. The coaxial fibers containing VPA supported adhesion, viability, and proliferation of PC12 cells. In addition, the VPA/PLGA microfibers induced the reduction of PC12 cell viability, as has already been described in the literature. The biomaterials were implanted in rats after SCI. The groups that received the implants did not show increased functional recovery or tissue regeneration compared to the control. These results indicated the cytocompatibility of the VPA/PLGA core-shell microfibers and that it may be a promising approach to treat SCI when combined with other strategies.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2020000400606
Editor: | Associação Brasileira de Divulgação Científica
Relação: | 10.1590/1414-431x20208993
Formato: | text/html
Fonte: | Brazilian Journal of Medical and Biological Research  v.53 n.4 2020
Fonte: | info:eu-repo/semantics/openAccess