Abstract
The aim of this study was to prepare HY-038 solid dispersions (SDs) with single carrier at high drug loading and then forming a tablet to enhance solubility, dissolution, and bioavailability via spray drying technology. At the same time, we hope to develop a more convenient in vitro method to predict the absorption behavior of different formulations in vivo. Different solid dispersions, varying in drug/polymer ratios, were prepared. Infrared spectroscopy, differential scanning calorimetry, scanning electron microscope, and X-ray diffraction were used to perform solid-state characterizations of the pure drug and SDs. Contact angle of water, dissolution in pH = 6.8 phosphate buffer, and in vivo absorption in dogs were studied. As a result, solid-state characterization demonstrated the transformation of the crystalline HY-038 to an amorphous state in the solid dispersions, and the in vivo exposure followed with the trend of the dissolution curve combined with contact angle. Compared with the prototype formulation, the Cmax and AUC0–∞ of optimized formulation SD2 (HY-038-HPMCAS 3:1) increased by about 5 ~ 9 times at the same dose. More importantly, the SD2 formulation showed approximately linear increases in Cmax and AUC0–∞ as the dose increased from 50 to 100 mg, while the prototype formulation reached absorption saturation at 50 mg. SD2 (HY-038-HPMCAS 3:1) was selected as the best formulation for the downstream development.
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Acknowledgements
The authors thank Maudie Carey at New York University for her help in language correcting and polishing.
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This work was supported by Grants from the National Natural Science Foundation of China (81773201), Development Project of Shanghai Peak Disciplines-Integrative Medicine (20180101), and the Flexible Talent Program in Xinjiang province.
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Conceptualization and design of the work: XYS and TTJ; investigation and drafting: TTJ, LMH, and EHL; Final approval of the version to be published: SLD and WXH. All authors have read and agreed to the published version of the manuscript.
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Jiang, T., Han, L., Lu, E. et al. Design and Characterization of HY-038 Solid Dispersions via Spray Drying Technology: In Vitro and In Vivo Evaluations. AAPS PharmSciTech 22, 267 (2021). https://doi.org/10.1208/s12249-021-02135-2
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DOI: https://doi.org/10.1208/s12249-021-02135-2