Department of Pharmaceutics, Faculty of Pharmacy, Gezira University, Medani, Sudan.
AAPS PharmSciTech. 2011 Sep;12(3):958-64. doi: 10.1208/s12249-011-9647-5. Epub 2011 Jul 15.
The present work explores the possibility of formulating an oral insulin delivery system using nanoparticulate complexes made from the interaction between biodegradable, natural polymer called chitosan and anionic surfactant called sodium lauryl sulfate (SLS). The interaction between chitosan and SLS was confirmed by Fourier transform infrared spectroscopy. The nanoparticles were prepared by simple gelation method under aqueous-based conditions. The nanoparticles were stable in simulated gastric fluids and could protect the encapsulated insulin from the GIT enzymes. Additionally, the in vivo results clearly indicated that the insulin-loaded nanoparticles could effectively reduce the blood glucose level in a diabetic rat model. However, additional formulation modifications are required to improve insulin oral bioavailability.
本研究探索了使用由生物可降解天然聚合物壳聚糖与阴离子表面活性剂月桂基硫酸钠(SLS)相互作用形成的纳米颗粒复合物来制备口服胰岛素递药系统的可能性。傅里叶变换红外光谱证实了壳聚糖和 SLS 之间的相互作用。纳米颗粒是通过简单的凝胶化方法在水基条件下制备的。纳米颗粒在模拟胃液中稳定,可以保护包封的胰岛素免受胃肠道酶的影响。此外,体内结果清楚地表明,载胰岛素纳米颗粒可以有效地降低糖尿病大鼠模型的血糖水平。然而,需要进一步的制剂修改来提高胰岛素的口服生物利用度。