Polímeros: Ciência e Tecnologia
https://revistapolimeros.org.br/article/doi/10.1590/0104-1428.20220016
Polímeros: Ciência e Tecnologia
Original Article

Development and optimization by factorial design of polymeric nanoparticles for simvastatin delivery

Dalila Pinto Malaquias; Lays Fernanda Nunes Dourado; Ângela Maria Quintão Lana; Fernando Souza; José Vilela; Margareth Andrade; Juan Pedro Bretas Roa; Álvaro Dutra de Carvalho-Junior; Elaine Amaral Leite

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Abstract

Controlled release systems can modify the release rate of drugs and direct them to specific sites of action, making them more effective and/or reducing the adverse effects. The objective of this study was investigated, poly(β-hydroxybutyrate) (PHB) and poly(ε-caprolactone) (PCL) nanospheres to improve the delivery of Simvastatin (SIM). Nanospheres were prepared by the emulsion/evaporation technique of the solvent, varying the amount of SIM added. The SIM quantification was performed using a validated high-performance liquid chromatography method. The average diameter and PDI of formulations without SIM were lower 250 nm and 0.3, respectively. Nanospheres containing 30% of SIM showed values of 265 nm and 0.09, respectively. The average zeta potential was -31.8 mV, suggesting the predominance of repulsive forces that prevent aggregation. In vitro release suggest transport occurs by diffusion. Morphological analysis demonstrated spherical particles and rough surfaces. In conclusion, data suggest that PHB/PCL nanospheres are promising delivery systems to SIM.

 

 

Keywords

drug delivery, nanoparticles, PHB, PHB/PCL blend, simvastatin

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