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Nano-composition, preparing method and application thereof

A nano composition and nano technology, applied in the direction of nano structure manufacturing, nano technology, nano technology, etc., can solve the problems of undiscovered nano preparations, improve the encapsulation rate and drug loading, improve the therapeutic effect, and the preparation method is simple Effect

Active Publication Date: 2008-12-10
北大世佳科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The results of domestic and foreign literature search show that there is no report on the use of prolamin carrier materials to encapsulate silybin to make nano-preparations

Method used

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  • Nano-composition, preparing method and application thereof
  • Nano-composition, preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Dissolve 100 mg of wheat prolamin and 15 mg of Poloxamer 188 in 12 ml of 70% ethanol solution, then add 18.8 mg of silibinin (SN), stir magnetically at 1500 rpm to dissolve, quickly add 28 ml of 1% Poloxamer 188 solution, continue stirring for 30 min, and rotate to evaporate Part of the ethanol is removed to obtain the colloidal solution of the nanometer composition. Add 400 mg of glucose and 200 mg of mannitol to the solution, fully dissolve, and lyophilize to obtain the nanocomposite lyophilized powder injection. After reconstitution with deionized water, the particle size was determined to be 203 nm, and the polydispersity index (PDI) was 0.217.

Embodiment 2

[0046] Dissolve 200mg of wheat prolamin and 30mg of Poloxamer188 in 15ml of 70% ethanol solution, then add 10mg of silibinin (SN), stir magnetically at 2500rpm to dissolve, quickly add 36ml of absolute ethanol, continue stirring for 20min, add dropwise 1% pentamer Dialdehyde solution 1.2ml, continue to stir and solidify for 8-12h, remove part of the ethanol by rotary evaporation, and obtain the nanocomposite colloidal solution. Add 200 mg of glucose and 200 mg of mannitol to the solution, fully dissolve, and lyophilize to obtain the nanocomposite lyophilized powder injection. After reconstitution with deionized water, the particle size was determined to be 280 nm, and the polydispersity index (PDI) was 0.112.

Embodiment 3

[0048] 120 mg of wheat prolamin and 16 mg of lecithin were dissolved in 6 ml of 70% ethanol solution, then 2.4 mg of silibinin (SN) was added, stirred with a magnetic force at a speed of 500 rpm to dissolve, and 24 ml of absolute ethanol was quickly added, continued to stir for 30 min, and added dropwise 2 % formaldehyde solution 2.4ml, continue to stir and solidify for 8-12h, and remove part of the ethanol by rotary evaporation to obtain a nanocomposite colloidal solution. Add 100 mg of glucose and 100 mg of mannitol to the solution, fully dissolve, and lyophilize to obtain the nanocomposite lyophilized powder injection. After reconstitution with deionized water, the measured particle size was 480 nm, and the polydispersity index (PDI) was 0.352.

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Abstract

The present invention relates to a new medicine delivery system carrier material, namely liver target nanometer combination that is made from wheat gliadin and silibinin. The preparation method of the nanometer combination is also provided. Coprecipitation of medicine and material in an identical system is achieved in a desolvation way; the nanometer combination colloidal solution that is made in the method can be produced into freeze-dried power injection after being mixed with the freeze-dried supporting agent acceptable in pharmacy. The nanometer combination can improve blood concentration of the medicine in liver region so that effect of the hepatitis cure medicine can be better exerted.

Description

technical field [0001] The invention is a liver-targeting nanometer composition made of wheat prolamin and silibinin, a novel drug delivery system carrier material. It involves the fields of biomaterials, biomedical engineering and new drug research. Background technique [0002] Silybin (Silybin, SN) is an insoluble flavonoid compound extracted from the fruit of Silybum Marianum L., a plant of Compositae. Pharmacological experiments have proved that silibinin has obvious protective effect on liver damage caused by various liver poisons. Its target organ is the liver. After entering the body, it is mainly combined with plasma proteins, and exists in plasma, bile and urine in the form of bound silibinin (Shi Xiangguo, Zhong Dafang, Zhang Yifan, etc. RP-HPLC Determination of the concentration of silibinin in rat plasma [J]. Journal of Shenyang Pharmaceutical University, 2001, 18 (2): 113). It has good curative effect on acute and chronic hepatitis, liver cirrhosis and metab...

Claims

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Application Information

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IPC IPC(8): A61K31/357A61K47/42A61K9/19A61P1/16B82B3/00
Inventor 周亚伟
Owner 北大世佳科技开发有限公司
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