Journals / Turkish Journal of Pharmaceutical Sciences / 2008 / Cilt: 5 - Sayı: 3

İndometazin yüklenmiş mikroküreler: Hazırlanmaları, özelliklerinin belirlenmesi ve etilselüloz matris materyaline yönelik in-vitro değerlendirilmeleri

Indomethacin-loaded microspheres: Preparation, characterization and in-vitro evaluation regarding ethylcellulose matrix material

Pages
129–142
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Therefore, indomethacin release from ethylcellulose microspheres could not be evaluated by any of the kinetic models.

📌 3 Key Takeaways

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Objective & Hypothesis:Indomethacin-loaded microspheres of ethylcellulose were prepared by the emulsion solvent evaporation technique.
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Key Findings & Data:The aim of this work was to investigate the influence of process variation in polymer type via viscosity grades of ethylcellulose N10 and N100, drug to polymer ratio, stirring rate of the propeller and surfactant type on the micromeritic properties of microspheres such as particle size distribution, bulk and tapped density, surface topography, tangent of angle of repose, compressibility index, Hausner ratio and flow rates.
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Conclusion & Impact:Therefore, indomethacin release from ethylcellulose microspheres could not be evaluated by any of the kinetic models.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Viskozite · In vitro · İndometazin

Abstract

Indomethacin-loaded microspheres of ethylcellulose were prepared by the emulsion solvent evaporation technique. The aim of this work was to investigate the influence of process variation in polymer type via viscosity grades of ethylcellulose N10 and N100, drug to polymer ratio, stirring rate of the propeller and surfactant type on the micromeritic properties of microspheres such as particle size distribution, bulk and tapped density, surface topography, tangent of angle of repose, compressibility index, Hausner ratio and flow rates. All microspheres presented a narrow particle size distribution and good flow characters according to USP 28-NF 23 criteria, besides microspheres were more spherical in shape in their manufacture with ethylcellulose N100 and higher ratio of both polymers. Thus, in the case of ethylcellulose, the viscosity and ratio of the polymer in dispersion medium were found to be the controlling factors of drug release. Ethylcellulose N10 and N100 membrane materials indicated difference in release patterns of microspheres. Microspheres exhibited lower burst effect with decreased drug release rate, when the drug was incorporated with ethylcellulose N100 and higher ratio of each polymer. Therefore, indomethacin release from ethylcellulose microspheres could not be evaluated by any of the kinetic models.

Özet

İndometazin yüklenmiş etilselüloz mikroküreleri, emülsiyon çözücü buharlaştırma yöntemi ile hazırlanmistır. Bu çalismada, farkl viskozitelere sahip etilselüloz N10 ve N100 polimer tipleri, etkin madde/polimer orani, pervane karistırma hızı ve sürfaktan tipi olan hazırlama yöntemi degişkenlerinin; mikrokürelerin partikül büyüklügü daglimı, küme ve sıkistırılmis dansite, yüzey özellikleri, yigin açisinn tanjantı, sıkıştırılabilirlik indeksi, Hausner oranı ve akis hızları gibi mikromeritik özelliklerine etkilerini araştırmak amaçlanmistır. Tüm mikroküreler USP 28-NF 23 kriterine uygun, dar partikül büyüklügü dagılimı ve iyi akis özellikleri göstermelerinin yan sıra; etilselüloz N100 ve her iki polimerin yüksek oranlar ile hazırlanan mikroküreler, daha düzgün küreler şeklinde elde edilmiştir. Böylece, etilselüloz a çisından değerlendirildiğinde; dispersiyon ortamındaki polimerin oranı ve viskozitesinin, etkin madde agiga çiki§inda belirleyici etkenler oldugu bulgusuna ula§ilmi§tır. Mikrokürelerin yüzeyini teşkil eden etilselüloz N10 ve N100 materyalleri, çözünme hızı profillerinde farklliga neden olmuştur. Etilselüloz N100 ve her iki polimerin yüksek oranlar il e hazırlanan mikroküreler, daha düsük bir ani salım etkisi ile daha yavaş bir salım fazı göstermiştir. Bu nedenle, indometazinin etilselüloz mikrokürelerinden salmı herhangi bir kinetik model ile değerlendirilememiştir.

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Cite This Article

YÜCE, M., CANEFE, K. (2008). İndometazin yüklenmiş mikroküreler: Hazırlanmaları, özelliklerinin belirlenmesi ve etilselüloz matris materyaline yönelik in-vitro değerlendirilmeleri. Turkish Journal of Pharmaceutical Sciences, Cilt: 5 - Sayı: 3, 129–142. https://ajindex.com/articles/404058

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