首页> 外文期刊>Journal of Applied Polymer Science >Tailoring reversible insulin aggregates loaded in electrosprayed arabinoxylan microspheres intended for colon-targeted delivery
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Tailoring reversible insulin aggregates loaded in electrosprayed arabinoxylan microspheres intended for colon-targeted delivery

机译:剪裁可逆胰岛素骨料,该聚集体负载用于用于结肠靶向的递送的电喷雾器化阿拉米羰基微球

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摘要

Arabinoxylans (AX) covalent gels are little affected by pH changes and fermentable by colonic microbiota, which make them suitable for insulin oral administration and colon-targeted delivery. In this work, the tailoring of insulin aggregates size using glutamic acid and their loading in AX microspheres (2%w/v) prepared by triaxial electrospray is presented. Dynamic light scattering showed that insulin-glutamic acid aggregates are reversible under intestinal conditions. AX microspheres presented a spherical shape, a mean diameter of 233 mu m, a heterogeneous microstructure as shown by scanning electron microscopy, and a homogeneous distribution of insulin aggregates as observed by confocal laser scanning microscopy. In this AX-insulin system, 20% of insulin is released under simulated gastrointestinal pH conditions, indicating that most of the insulin stays into the microspheres, available for colonic release. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47960.
机译:阿拉伯辛酰亚胺(AX)的共价凝胶受到pH变化和结肠微生物群的影响,这使得它们适用于胰岛素口服给药和结肠靶向递送。 在这项工作中,呈现了使用谷氨酸的抑制胰岛素骨料尺寸和其在通过三轴电喷雾制备的轴微球中的负载率和其负载。 动态光散射表明,胰岛素 - 谷氨酸聚集体在肠道条件下可逆。 轴微球呈现球形,平均直径为233μm,如扫描电子显微镜所示的非均相微结构,以及通过共聚焦激光扫描显微镜观察的胰岛素聚集体的均匀分布。 在该轴 - 胰岛素系统中,20%的胰岛素在模拟的胃肠pH值下释放,表明大多数胰岛素停留在微球中,可用于结肠释放。 (c)2019 Wiley期刊,Inc.J.Phill。 聚合物。 SCI。 2019,136,47960。

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