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Publikācija: Microencapsulation of Mildronate in Biodegradable and Non- Biodegradable Polymers

Publication Type Scientific article indexed in SCOPUS or WOS database
Funding for basic activity Unknown
Defending: ,
Publication language English (en)
Title in original language Microencapsulation of Mildronate in Biodegradable and Non- Biodegradable Polymers
Field of research 2. Engineering and technology
Sub-field of research 2.5 Materials engineering
Authors Dagnija Loča
Eduards Sevostjanovs
Marina Makrecka
Olga Zarkova-Malkova
Līga Bērziņa-Cimdiņa
Velta Tupureina
Marina Putniņa
Keywords Drug delivery, double emulsion technique, encapsulation, microcapsules, mildronate
Abstract The extremely high hygroscopicity (solubility in water ≥2 g/ml) of the pharmaceutical preparation mildronate defines specific requirements to both packaging material and storage conditions. To overcome the above mentioned inconveniences, microencapsulated form of mildronate was developed using polystyrene (PS) and poly (lactic acid) (PLA) as watertight coating materials. Drug/polymer interaction as well as influence of the microencapsulation process variables on microparticle properties was studied in detail. Water-in-oil-in-water double emulsion technique was adapted and applied for the preparation of PS/mildronate microparticles with total drug load up to 77 %wt and PLA/mildronate microparticles with total drug load up to 80 %wt. The repeatability of the microencapsulation process was ±4% and the encapsulation efficiency of the active ingredient reached 60 %wt. The drug release kinetics from the obtained microparticles was evaluated and it was found that drug release in vivo could be successfully sustained if polystyrene matrix has been used. The extremely high hygroscopicity (solubility in water ≥2 g/ml) of the pharmaceutical preparation mildronate defines specific requirements to both packaging material and storage conditions. To overcome the above mentioned inconveniences, microencapsulated form of mildronate was developed using polystyrene (PS) and poly (lactic acid) (PLA) as watertight coating materials. Drug/polymer interaction as well as influence of the microencapsulation process variables on microparticle properties was studied in detail. Water-in-oil-in-water double emulsion technique was adapted and applied for the preparation of PS/mildronate microparticles with total drug load up to 77 %wt and PLA/mildronate microparticles with total drug load up to 80 %wt. The repeatability of the microencapsulation process was ±4% and the encapsulation efficiency of the active ingredient reached 60 %wt. The drug release kinetics from the obtained microparticles was evaluated and it was found that drug release in vivo could be successfully sustained if polystyrene matrix has been used.
DOI: 10.3109/02652048.2013.834992
Reference Loča, D., Sevostjanovs, E., Makrecka, M., Zarkova-Malkova, O., Bērziņa-Cimdiņa, L., Tupureina, V., Sokolova, M. Microencapsulation of Mildronate in Biodegradable and Non- Biodegradable Polymers. Journal of Microencapsulation, 2014, Vol.31, No.3, pp.246-253. ISSN 0265-2048. e-ISSN 1464-5246. Available from: doi:10.3109/02652048.2013.834992
Additional information Citation count:
ID 16792