RESUMEN
Propolis is an aromatic substance which is collected by bees and mixed with bee saliva. The plant sources of propolis are mainly consisted with plant exudates from bark, buds and etc. Flavonoids are secondary metabolites widely found in natural plants, which have a variety of health care functions and are the main active ingredients of propolis. This article summarized the types, active ingredients, pharmacological effects, extraction methods and applications of propolis flavonoids, the aim was to provide the theoretical basis for further research and development of propolis flavonoids.
Asunto(s)
Abejas , Flavonoides/química , Flavonoides/aislamiento & purificación , Própolis/química , Animales , Abejas/química , Abejas/clasificación , Abejas/fisiología , China , Flavonoides/fisiología , Própolis/uso terapéuticoRESUMEN
Propolis is a natural resinous product and exerts anti-inflammatory properties. The aim of this study is formulation and characterization of solid lipid nanoparticles (SLNs) encapsulating propolis flavonoids (PFs), intended for topical treatment of skin edema. The nanoparticles were prepared and statistically optimized using Box-Behnken response surface methodology. The in vitro release profile of the optimized nanoparticles was investigated. Cytotoxicity of nanoparticles on HSF-PI 18 cell line was determined. Permeation and penetration of nanoparticles across the incised skin were measured. Finally, the nanoparticles were incorporated into a pharmaceutical hydrogel formulation and the in vivo efficacy in reduction of skin edema was determined. The size, PdI, zeta potential, entrapment efficiency (EE%) and loading efficiency (LE %) of the optimized nanoparticles were 111.3 ± 19.35 nm, 0.34 ± 0.005, -24.17 ± 3.3 mV, 73.5 ± 0.86%, and 3.2 ± 0.27%, respectively. Data obtained through in vitro release study suggested a burst release followed by a prolonged release behavior up to 24 h post incubation time interval. The prepared SLNs exhibited no cytotoxicity on HSF-PI 18 cell line. Ex vivo permeation and penetration study of nanoparticles across the incised skin showed approximately a 2.5-fold and a 3-fold increase in cumulative amount of transport and cumulative amount of skin penetration, respectively. Finally, in vivo studies in rat models, showed a threefold reduction in volume of the edema in animals treated with SLNs. The obtained data revealed that the prepared SNs entrapping PFs, exert high skin targeting effects, prolonged anti-inflammatory properties and therefore high efficiency in treatment of skin edema.
Asunto(s)
Edema/tratamiento farmacológico , Flavonoides/farmacología , Lípidos/farmacología , Nanopartículas , Própolis , Animales , Portadores de Fármacos , Flavonoides/química , Lípidos/química , RatasRESUMEN
Através de cromatografia em papel bidimensional e doseamento espectrofotométrico de flavonóides totais, foi proposto um método de controle de qualidade para produtos contendo própolis. Este método foi aplicado a 21 amostras comerciais cujos rótulos declaravam a presença de própolis, mostrou ser acessível a laboratórios comuns e apresentou alta sensibilidade (AU).