薄荷醇预处理对胰岛素鼻腔给药药理生物利用度的影响

Effect of l-menthol pretreated nasal cavity on insulin pharmacological bioavailability

目的 探讨薄荷醇预处理对胰岛素 (Insulin ,Ins)鼻腔给药药理生物利用度的影响。方法 建立糖尿病大鼠模型 ,用薄荷醇预处理鼻腔 ,2h后滴入胰岛素 ,不同时间取血测血糖浓度 ,计算曲线上面积和药理生物利用度。结果 用不同浓度薄荷醇预处理鼻腔后 ,在 2 0～ 3 0h时薄荷醇对Ins的鼻腔吸收具有显著的促进作用 ,Ins鼻腔吸收的药理生物利用度比空白对照组分别增加 5 77、7 0 0和 3 12倍。结论 薄荷醇可促进胰岛素的鼻腔吸收。

AIM To study the effect l-menthol pretreated nasal cavity on insulin pharmacological bioavailability(PBA). METHODS To set up diabetic rats model,nasal cavities were pretreated with l-menthol for two hours,insulin was dripped, blood glucose concentrations of different time were determined,and the area over the curve (AOC) and pharmacological bioavailability(PBA) were calculated. RESULTS After rats nasal cavity was pretreated with different concentrations l-menthol, nasal cavity absorption of insulin markedly increased between 2 h and 3 h,and PBA of insulin nasal cavity absorption increased respectively 5.77,7.00 and 3.12 times than control group. CONCLUSION l-Menthol promotes the nasal cavity absorption of insulin.