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Traditional Chinese medicine extract for suppressing generation of in-vitro glycosylation product and extraction method

An extraction method and inhibitor technology, which can be used in pharmaceutical formulations, plant/algae/fungus/moss components, drug combinations, etc., and can solve complex problems

Inactive Publication Date: 2012-12-19
NANJING UNIVERSITY OF TRADITIONAL CHINESE MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Maillard reaction occurs on the amino groups of proteins and other substances in vitro or in vivo and the aldehyde groups of sugars. It does not require enzyme catalysis, but it is a very complicated process.

Method used

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  • Traditional Chinese medicine extract for suppressing generation of in-vitro glycosylation product and extraction method
  • Traditional Chinese medicine extract for suppressing generation of in-vitro glycosylation product and extraction method
  • Traditional Chinese medicine extract for suppressing generation of in-vitro glycosylation product and extraction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The extraction process step of embodiment 1 medicine sub-decoction water extract

[0034] Rehmannia water extract: crush 500g of rehmanniae and pass through a 40-mesh sieve for 3 extractions, add 10 times the amount of water for the first time, extract for 2 hours, and filter to obtain extract I; add 6 times the amount of water to the dregs for the second time , extracted for 1 hour, to obtain extract II; for the third time, add 4 times the amount of water to the medicinal dregs, extract for 1 hour, to obtain extract III, combine each extract, and concentrate to 1.5g crude drug / mL; Cornus officinalis water extract: Cornus officinalis Add 250g of medicinal materials and 12 times the amount of water to extract twice, each time for 2 hours, combine the extracts, concentrate to 1.5g crude drug / mL, and mix the above-mentioned concentrated extracts of rehmannia root and Cornus officinalis in a ratio of 2:1.

Embodiment 2

[0035] The extraction process step of embodiment 2 medicine decoction water extract

[0036] Weigh 500g of Shengdi and 250g of Cornus officinalis, mix and pulverize evenly, pass through a 40-mesh sieve, and extract 3 times. Add 10 times the amount of water for the first time, extract for 2 hours, and filter to obtain extract I; add 6 times the amount of water to the medicinal residues for the second time, extract for 1 hour, and obtain extract II; add 4 times the amount to the medicinal residues for the third time water, extract for 1 h to obtain extract III, and combine the extracts.

Embodiment 3

[0037] Example 3 The extraction process of the effective parts of Rehmannia

[0038] After crushing 400 g of raw soil, pass through a 40-mesh sieve, and extract 3 times. Add 10 times the amount of water for the first time, extract for 2 hours, and filter to obtain extract I; add 6 times the amount of water to the medicinal residues for the second time, extract for 1 hour, and obtain extract II; add 4 times the amount to the medicinal residues for the third time Water, extract for 1 hour to obtain extract III, combine all extracts, concentrate to 1 g crude drug / mL, add alcohol to a concentration of 70% alcohol precipitation, let stand for 24 hours, filter to obtain supernatant and alcohol precipitation.

[0039] Oligosaccharides: Volatile the supernatant until there is no alcohol smell, and set the volume to 0.5g crude drug / mL, apply macroporous resin, elute with distilled water, wash until the Molish reaction is negative, collect the water eluate, concentrate, and spray dry ,...

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PUM

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Abstract

The invention discloses a traditional Chinese medicine extract. The extract includes the rehmanniae praeparatum and fructus corni separated decoction aqueous extract solution aqueous extract, the rehmanniae praeparatum and fructus corni combined decoction aqueous extract solution aqueous extract, the rehmanniae praeparatum and fructus corni separated decoction and combined decoction aqueous extract drug serum, the effective parts of rehmanniae praeparatum (iridoid glycoside, oligosaccharide and polysaccharide), the effective parts of fructus corni (iridoid glycoside, polysaccharide and triterpenic acid), and the orthogonal compatibility combination of the 6 effective parts. In the effective parts, the content of catalpol in the iridoid glycoside part of the rehmanniae praeparatum is 1.91%, the purity of the polysaccharide is 68.52%, the content of two glycosides in the iridoid glycoside part of the fructus corni is 44.8%, etc. The traditional Chinese medicine extract is subjected to relatively systematic screening research by taking the in-vitro AGEs generation model as a research object, and the result indicates that the traditional Chinese medicine extract can obviously suppress the generation of in-vitro glycosylation products, namely fructosamine (early stage) and AGEs (late stage), thus the invention provides an experimental basis for clinically using rehmanniae praeparatum and fructus corni to treat the vascular diseases such as diabetic nephropathy and the like with the traditional Chinese medicine.

Description

technical field [0001] The invention relates to a class of traditional Chinese medicine extracts, in particular to a class of traditional Chinese medicine extracts for inhibiting the formation of glycosylation products in vitro, an extraction method and application. Background technique [0002] Diabetes belongs to the category of "diabetes syndrome" in traditional Chinese medicine. Diabetic vascular disease is the main complication of diabetes. The nature of its macrovascular disease is atherosclerosis, which mainly involves large blood vessels such as aorta and coronary artery. Diabetic microangiopathy is a chronic vascular complication unique to diabetes, mainly manifested as retinal , kidney and other microvascular diseases. Clinical statistics show that 40%-50% of diabetic patients develop retinopathy 10 years after onset; about 2% of patients are completely blind 15 years after onset; End-stage renal disease. Although the exact pathological mechanism of the occurren...

Claims

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Application Information

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IPC IPC(8): A61K36/804A61P3/10A61P9/14
Inventor 许惠琴赵晓莉赵腾斐狄留庆农伟虎吕高虹崔小兵
Owner NANJING UNIVERSITY OF TRADITIONAL CHINESE MEDICINE
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