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    Clindamycin phosphate and bone morphogenetic protein-7 loaded combined nanoparticle-graft and nanoparticle-film formulations for alveolar bone regeneration-An in vitro and in vivo evaluation
    (Elsevier, 2023) Ilhan, Miray; Kilicarslan, Muge; Alcigir, Mehmet Eray; Bagis, Nilsun; Ekim, Okan; Orhan, Kaan
    Commonly utilized techniques for healing alveolar bone destruction such as the use of growth factors, suffering from short half-life, application difficulties, and the ability to achieve bioactivity only in the presence of high doses of growth factor. The sustained release of growth factors through a scaffold-based delivery system offers a promising and innovative tool in dentistry. Furthermore, it is suggested to guide the host response by using antimicrobials together with growth factors to prevent recovery and achieve ideal regeneration. Herein, the aim was to prepare and an in vitro -in vivo evaluation of bone morphogenetic protein 7 (BMP-7) and clindamycin phosphate (CDP) loaded polymeric nanoparticles, and their loading into the alginate-chitosan polyelectrolyte complex film or alloplastic graft to accelerate hard tissue regeneration. PLGA nanoparticles containing CDP and BMP-7, separately or together, were prepared using the double emulsion solvent evaporation technique. Through in vitro assays, it was revealed that spherical particles were homogeneously distributed in the combination formulations, and sustained release could be achieved for >12 weeks with all formulations. Also, results from the micro-CT and histopathological analyses indicated that CDP and BMP-7 loaded nanoparticle-film formulations were more effective in treatment than the nanoparticle loaded grafts.
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    A new approach to oral dosage forms: carrageenan-based vegan gummies
    (Marmara Univ, 2024) Gultek, Hazal Ezgi; Ilhan, Miray; Nalbanto, Firat
    Although the oral route is a common drug administration route, it still causes some patient compliance problems. Gummies are chewable gels that are commonly manufactured as dietary supplement carriers and their pharmaceutical use is still limited. Dexketoprofen trometamol is an anti-inflammatory and antipyretic drug. In the present study, dexketoprofen containing gummies were manufactured using carrageenan (Gelcarin (R) GP-379) as the gel -forming polymer. Potassium dihydrogen phosphate (KH2PO4) was used as the gelling agent in the research. The obtained gummies were characterized. For this purpose, gel viscosity measurements, morphological and physical characterizations, thermal analysis, and in vitro drug release studies were carried out. The viscosity of the gel mixtures was measured at 50 degrees C, which was the pouring temperature of the gels into molds. The formulation containing the highest carrageenan and KH2PO4 had the highest viscosity. The physical characterization results showed that the gummy formulations could be prepared in a reproducible manner. The DSC thermograms showed that the melting peak of DXT was not observed in the gummy formulation. The in vitro dissolution test results of the gummies showed that decreasing the carrageenan and KH2PO4 concentration in gummy formulation accelerated the drug release. The obtained gummies exhibited an extended -release of up to 2 hours.