Rhizoma coptidis total alkaloids resin complexes, sustained-release preparation thereof and preparation method thereof

A resin compound, total alkaloid technology, applied in the directions of drug combination, pharmaceutical formulation, drug delivery, etc., can solve the problems of low bioavailability of berberine, poor patient compliance, frequent medication, etc. The effect of delaying hydrolysis and improving stability

Inactive Publication Date: 2011-03-02
GUANGANMEN HOSPITAL CHINA ACAD OF CHINESE MEDICAL SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the taste of Coptidis Rhizome is extremely bitter, and the bioavailability of berberine is very low.

Method used

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  • Rhizoma coptidis total alkaloids resin complexes, sustained-release preparation thereof and preparation method thereof
  • Rhizoma coptidis total alkaloids resin complexes, sustained-release preparation thereof and preparation method thereof
  • Rhizoma coptidis total alkaloids resin complexes, sustained-release preparation thereof and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0068] 1. Preparation of reference solution: accurately weigh out 5 mg of jatrorrhizine hydrochloride, berberine hydrochloride, palmatine hydrochloride, and berberine hydrochloride standard samples, respectively, put them into 10 mL volumetric flasks, and add hydrochloric acid-methanol (1:100, v / v) to the mark, dissolve by ultrasound, and mix well to obtain the stock solution.

[0069] 2. Preparation of test solution: Take 0.1g of total alkaloids of Coptis chinensis, accurately weigh it, place it in a conical flask with stopper, add 100mL of hydrochloric acid-methanol (1∶100, v / v), weigh, and ultrasonic for 40min , Take it out and put it at room temperature, make up the lost weight, filter, and take the filtrate to get it.

[0070] 3 Chromatographic conditions:

[0071] Chromatographic column: Venusil XBP-C18 analytical column (250mm×4.6mm, 5μm) and Brava C 18 -BDS pre-column; mobile phase: acetonitrile: 0.05mol·L -1 Potassium dihydrogen phosphate solution (pH4.54)=28:72(v / v); detec...

Example Embodiment

[0081] Example 1. Preparation of Coptis total alkaloid resin complex by static exchange method

[0082] Accurately weigh Amberlite TM Pharmaceutical grade ion exchange resin (strong acid Na + Type IRP69 resin, weak acid H + Type IRP64 resin and weak acid K + Type IRP88 resin; Rohm&Hass company) is added to a certain concentration of the drug solution, placed in a constant temperature water bath, fully stirred at different temperatures, and sampled at the set time, using the above-mentioned Coptis alkaloid content determination method, respectively Equations (1) and (2) calculate the resin exchanged drug amount (Q) and drug utilization rate (E). When the drug concentration is basically unchanged, the reaction reaches equilibrium.

[0083] Q = ( C 0 - C t ) V W R - - - ( 1 )

[0084] E = C 0 - C t C 0 - - - ( 2 )

[0085] Among them, Q is the exchange drug quantity per unit mass of resin ...

Example Embodiment

[0140] Example 2: Verification of the structure of the total alkaloid resin complex of Rhizoma Coptis

[0141] Differential thermal analysis (DSC), infrared spectra (Infrared spectra), and X-ray diffraction (X-ray diffraction) were used to verify the binding mode of the total alkaloids of Coptis and IRP88 resin in the drug resin complex prepared in Example 1.

[0142] 1. Differential scanning thermal analysis (DSC)

[0143] Differential scanning thermal analysis method was used to record the differential thermal analysis spectrum of Coptis total alkaloid, ion exchange resin IRP88, drug resin complex, Coptis total alkaloid-ion exchange resin IRP88 physical mixture (1∶1, w / w) .

[0144] Measurement conditions: scanning range 25-350°C; heating rate 10.00°C / min; reference material: blank aluminum dry pan; atmosphere: static air; sample weight is about 4.0 mg. See the test chart Image 6 .

[0145] Ion exchange resins have certain characteristic melting endothermic peaks, which vary accord...

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Abstract

The invention discloses Rhizoma coptidis total alkaloids resin complexes, a sustained-release preparation thereof and a preparation method thereof. The Rhizoma coptidis total alkaloids resin complexes comprise Rhizoma coptidis total alkaloids and acidic K plus resin (Amberlite TMIRP88 resin). In 100g of the complexes, the total content of jateorrhizine, coptisine, palmatine and berberine is (67.75 plus/minus 1.26) g and the content of the berberine is (54.87 plus/minus 1.64) g. An assay determination of IR, DSC, X-ray diffraction, and the like, proves that the medical resin complexes are formed by bonding of Rhizoma coptidis lkaloids and cation exchange resin through the ionic bond rather than simple physical adsorption. An orally taken sustained-release preparation thereof is prepared by using the medical resin complexes as raw material and Carbopol 974 PNF as the sustained-release material. An in-vitro dissolving test proves that the sustained-release preparation has a good sustained-release function and can sustainably release for 8h to 24h according to different designs.

Description

technical field [0001] The invention relates to a total alkaloid resin complex of Coptis chinensis, its slow-release preparation and a preparation method thereof. Background technique [0002] Coptis chinensis is the dried rhizome of Coptis chinensis Franch, Coptis deltoidea C.Y. Chenget Hsiao and Coptis teeta Wall. Alkaloids are the main components of Coptis Rhizoma, including Berberine, Coptisine, Jatrorrhizine, Palmatine and Epiberberine hydrochloride, among which Berberine The highest content. [0003] Berberine hydrochloride (Berberine hydrochloride), also known as berberine, its molecular formula is [C 2 0H 18 NO 4 ] + Cl - , the structural formula is as follows: [0004] [0005] Molecular weight 371.8, yellow needle-like crystal, melting point 145°C, berberine hydrochloride has a relatively small solubility in water of 1:500, soluble in hot water and ethanol, insoluble in ether and benzene. [0006] Coptisine hydrochloride (Coptisine hydrochloride), the mo...

Claims

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Application Information

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IPC IPC(8): A61K47/48A61K36/718A61K9/00A61K9/22A61P31/04A61P3/10A61P1/00A61P1/04A61K125/00A61K47/59
Inventor 崔翰明金良白鸽张秋燕夏丕芳
Owner GUANGANMEN HOSPITAL CHINA ACAD OF CHINESE MEDICAL SCI
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