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Journal of Peking University(Health Sciences) >

2021 , Vol. 53 >Issue 2: 348 - 354

DOI: https://doi.org/10.19723/j.issn.1671-167X.2021.02.020

Preparation and in vitro evaluation of fused deposition modeling 3D printed verapa-mil hydrochloride gastric floating formulations

  • Di CHEN ,
  • Xiang-yu XU ,
  • Ming-rui WANG ,
  • Rui LI ,
  • Gen-ao ZANG ,
  • Yue ZHANG ,
  • Hao-nan QIAN ,
  • Guang-rong YAN ,
  • Tian-yuan FAN
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  • 1. Department of Pharmaceutics, Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, Peking University School of Pharmaceutical Sciences, Beijing 100191, China
    2. School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China

Received date: 2019-05-05

  Online published: 2021-04-21

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Abstract

Objective: To explore the feasibility of preparing gastric floating formulations by fused de-position modeling (FDM) 3D printing technology, to evaluate the in vitro properties of the prepared FDM 3D printed gastric floating formulations, and to compare the influence of different external shapes of the formulation with their in vitro properties. Methods: Verapamil hydrochloride and polyvinyl alcohol (PVA) were used as the model drug and the excipient, respectively. The capsule-shaped and hemisphere-shaped gastric floating formulations were then prepared by FDM 3D printing. The infill percentages were 15%, the layer heights were 0.2 mm, and the roof or floor thicknesses were 0.8 mm for both the 3D printed formulations, while the number of shells was 3 and 4 for capsule-shaped and hemisphere-shaped formulation, respectively. Scanning electron microscopy (SEM) was used to observe the morpho-logy of the surface and cross section of the formulations. Gravimetric method was adopted to measure the weights of the formulations. Texture analyzer was employed to evaluate the hardness of the formulations. High performance liquid chromatography method was used to determine the drug contents of the formulations. The in vitro floating and drug release behavior of the formulations were also characterized. Results: SEM showed that the appearance of the FDM 3D printed gastric floating formulations were both intact and free from defects with the filling structure which was consistent with the design. The weight variations of the two formulations were relatively low, indicating a high reproducibility of the 3D printing fabrication. Above 800.0 N of hardness was obtained in two mutually perpendicular directions for the two formulations. The drug contents of the two formulations approached to 100%, showing no drug loss during the 3D printing process. The two formulations floated in vitro without any lag time, and the in vitro floating time of the capsule-shaped and hemisphere-shaped formulation were (3.97±0.41) h and (4.48±0.21) h, respectively. The in vitro release of the two formulations was significantly slower than that of the commercially available immediate-release tablets. Conclusion: The capsule-shaped and hemisphere-shaped verapamil hydrochloride gastric floating formulations were prepared by FDM 3D printing technology successfully. Only the floating time was found to be influenced by the external shape of the 3D printed formulations in this study.

Key words： Fused deposition modeling; Printing; three-dimensional; Verapamil; Gastric floating formulation

Cite this article

Di CHEN , Xiang-yu XU , Ming-rui WANG , Rui LI , Gen-ao ZANG , Yue ZHANG , Hao-nan QIAN , Guang-rong YAN , Tian-yuan FAN . Preparation and in vitro evaluation of fused deposition modeling 3D printed verapa-mil hydrochloride gastric floating formulations[J]. Journal of Peking University(Health Sciences), 2021 , 53(2) : 348 -354 . DOI: 10.19723/j.issn.1671-167X.2021.02.020

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