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Medikamentuen liberazio duala: kitosanoan oinarrituriko hidrogel termosentikorrak

Authors: Marín Ameztoy, Edurne;

Medikamentuen liberazio duala: kitosanoan oinarrituriko hidrogel termosentikorrak

Abstract

[ES] Los dispositivos poliméricos para la liberación controlada de fármacos han supuesto un importante avance con respecto a los sistemas tradicionales, mejorando la solubilidad y bioactividad de los fármacos, prolongando su efecto y reduciendo los efectos adversos. En este ámbito, son de gran interés, los sistemas que permiten la liberación simultánea y controlada de varios agentes terapéuticos de distintas naturalezas para así conseguir una optimización terapéutica elevada. Por ello, en el presente estudio, se ha contemplado el uso de hidrogeles inyectables basados en quitosano (CS) para la liberación dual y simultanea de un agente hidrófilo (hidrocloruro de tetraciclina(TCH)) y otro hidrófobo (ibuprofeno (IBU)). LaTCH se ha incorporado directamente en la matriz tridimensional del hidrogel, mientras que el IBU ha sido previamente encapsulado en partículas poliméricas bioreabsorbibles de ácido poli(láctico-co-glicólico) (PLGA) de tamaño micro- y nanométrico. Estas últimas han sido posteriormente embebidas en la estructura del hidrogel. La TCH se libera en las primeras horas de incubación debido a su elevada solubilidad en agua y limitada interaccion con la matriz polimérica. En el caso del IBU, este presenta una liberación más prolongada la cual viene determinada por la degradación hidrolítica gradual de las micro- y nanopartículas poliméricas.

[ENG] Polymeric drug delivery systemshave supposed an important advance in the drug administration, since they can improve the drug solubility and bioactivity, prolonging their effect and reducing the side effects that traditional delivery systems cause. In this field, systems which allows the controlled and simultaneous delivery of different therapeutic agentshave become so popular. Thus, by mean of researching work, it has been studied the use of chitosan (CS) based hydrogels for the dual and simultaneous delivery of a hydrophilic agent (tetracycline hydrochloride (TCH)) and a hydrophobic agent (ibuprofen (IBU)). TCH has been added directly to the three-dimensional hydrogel structure, while IBU has been previously encapsulated in polymeric bioresorbable poly (lactic-co-glycolic) (PLGA) nano- and micrometric sized particles. Once the particles have been made, they have been introduced in the hydrogel structure. Because of its high-water solubility and limited interaction with the polymeric matrix, TCH has been delivered in the first hours. In the case of IBU, it shows a prolonged drug delivery which is limited by the gradual hydrolytic degradation of micro- and nanoparticles.

[EUS] Farmakoen liberazio kontrolaturako erabiltzen diren gailu polimerikoak orain arte erabilitako sistema tradizionalen aurrean aurrerapauso garrantzitsua izan dira, izan ere, gailu hauen bidez, farmakoaren solubilitatea eta bioaktibitatea hobetzen da bere eragina denboran luzatuz eta albo kalteak gutxituz. Arlo honen barnean, izaera ezberdineko agente ezberdinen aldibereko liberazio kontrolatua oso interesgarria da optimizazio terapeutiko altuagoa lortzeko. Hori dela eta, ondorengo ikerketa lanean, kitosanoan (CS) oinarrituriko hidrogel injektagarrien erabilera aztertu da, agente hidrofiliko baten ( tetraziklina hidrokloruroa (TCH)) eta hidrofobo baten (ibuprofenoa (IBU)) liberazio dual eta aldiberekorako. TCH-a hidrogelaren hiru dimentsioko egituran zuzenean gehitu da. Aldiz, IBU mikro- eta nanometro tamainako poli(laktida-glikolidazko) (PLGA) partikuletan kapsularatu da ondoren hidrogelaren egiturara gehitzeko. TCH-a lehen orduetan askatu da, matrizearekin duen interakzio mugatu eta uretan duen solubilitatealtua dela eta. IBU-ri dagokionez, bere liberazioa denboran luzatuagoa da, mikro- eta nanopartikulen degradazio hidrolitikoak mugatzen baitu.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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Green