264 results about "Choleic Acid" patented technology

The invention discloses a decellularized pericardial tissue via chemical treatment with cholic acid or bile salts as a medical device and process of manufacture.

The invention discloses a valved stent and process of manufacture for treating chronic venous insufficiency having the geometry of the supporting frame and its coupling to the membrane of a specific geometry that provides the valvular mechanism for optimal function. The membrane may comprise a decellularized pericardial tissue via chemical treatment with cholic acid or bile salts and crosslinked.

The invention provides a mutant of 7 beta-hydroxyl steroid dehydrogenase, application of the mutant and a synthesis method. The mutant of the 7 beta-hydroxyl steroid dehydrogenase is characterized in that amino acid sequences of the mutant are Seq ID NO:4, and coded nucleotide sequences are Seq ID NO:3; or amino acid sequences of the mutant are Seq ID NO:6, and coded nucleotide sequences are Seq ID NO:5. The mutant, the application and the synthesis method have the advantages that cholic acid compounds, particularly ursodeoxycholic acid, can be catalytically synthesized by the efficient 7 beta-hydroxyl steroid dehydrogenase, mutant enzymes of the 7 beta-hydroxyl steroid dehydrogenase and coenzyme regeneration systems, accordingly, the substrate concentration can reach 100 g/L, the conversion rate is 99.2-99.5%, and the weight yield can reach 94-96%; and the enzymes can be inexpensively and easily obtained by the aid of a fermentation process, accordingly, the production cost and the product quality are superior to the production cost and the product quality of chemical synthesis methods, and the mutant and the synthesis method are applicable to industrial production.

The present invention relates to process of extracting cholic acid, deoxycholic acid and bilirubin from bile of pig, ox and sheep. Bile of pig, ox and sheep consists of water in about 97 %, bile acid in about 2.5 % and bilirubin in about 0.4 %; and contains also phospholipid, cholesterol, Na, K, Ca, phosphate, carbonate, small amount of protein, and other components. Fresh bile is treated through cooling, filtering to defat, basic hydrolysis, acidification and organic solvent extracting to obtain bilirubin; the rest solution is further treated through deep saponification, acidification and organic solvent precipitation to obtain the mixture of cholic acid and deoxycholic acid; and the mixture is re-crystallization separated to obtain high purity cholic acid and deoxycholic acid.

A process for separating the chenodeoxycholic acid from pig's gall and purifying it includes such steps as preparing general cholic acid from the mother liquid generated by extracting the cholerythrin from pig's gall, saponifying, regulating pH value to obtain crude chenodeoxycholic acid, decoloring, defatting, preparing the deposit of barium chenodeoxycholate, reacting on potassium carbonate to remove Ba, regulating pH value, and purifying by silicon gel column.

The invention provides a group of biomarkers which can be used for detecting liver fibrosis and cirrhosis. The biomarkers refer to metabolite components existing in a biological sample of a subject body and comprise a plurality of metabolites, wherein the metabolites are selected from cholic acid, amino acid and fatty acid. Metabolite combination comprises at least one amino acid, fatty acid and cholic acid, the metabolite combination is differentially expressed in at least one target plasma or serum and in a control plasma or serum. The biomarkers can optionally be combined with clinical indicators for diagnosis of liver fibrosis in the subject body. The biomarker composition has the characteristics of high sensitivity and specificity for pathological staging diagnosis of liver fibrosis patients, and can be clinically applied as a non-invasive means to improve clinical diagnosis and reduce puncture pain of the patients. The invention further provides a use method of the biomarkers andkits containing the biomarkers.

The invention relates to a preparation method of corn resistant starch, which uses common corn starch as raw material to produce corn resistant starch with multiple physiological functions and characteristics by combined treatment of microbial fermentation and hot pressing and cooling. The resistant starch has physiologic functions of effectively controlling body weight, preventing constipation, appendicitis, hemorrhoids and colon cancer, controlling diabetes, increasing lipid discharge, improving lipid composition, promoting absorption of zinc, calcium and magnesium ions, increasing removal of cholesterol and cholic acid, and reducing cholesterol biosynthesis, lipid absorption and fatty acid biosynthesis. The resistant starch used in food processing industry has better physicochemical properties than those of dietary fiber, low water retention capacity, good mouthfeel, no influence on food, and improve food texture. The invention solves the problems in production of resistant starch, including low yield and lack of high amylase starch in China.

The invention discloses a quality detection method of a Zhenlong brain-refreshment preparation. The method provided by the invention comprises a discrimination method of piper longum, banksia rose, Chinese cassia tree, gallic acid, cardamom, clove, pearl, cholic acid, stigma croci and cinnamaldehyde as well as a discrimination method of piperine in piper longum, cholic acid in cow-bezoar, cinnamaldehyde in Chinese cassia tree, and crocin-I and crocin-II in stigma crociand. Through a test research, by the discrimination methods in the quality detection method of the test article chromatograph,spots with the same color are shown on the corresponding position of control article chromatograph without the interference of negative control. The method is convenient and feasible with strong character. The content detection method provided by the invention is used to detect the contents of piperine, cholic acid, crocin-I and crocin-II in the Zhenlong brain-refreshment preparation. The result shows that the method has good linear relation, high accuracy of a recovery test and good repeatability and stability, and can be used to accurately and rigorously control the quality of the Zhenlong brain-refreshment preparation.

A form-improvement agent, for resist pattern, including a steroid compound is included in a positive chemically amplified resist. The form-improvement agent is in a range from 0.5 to 8 parts by weight per 100 parts by weight of a resin for resist included in the positive chemically amplified resist. The steroid compound is, for example, a cholic acid ester.

The invention relates to the technical field of the traditional Chinese medicine and in particular to the quality standard of a pharynx-clearing dropping pill which is made from the raw materials of a natural indigo, liquorice, myrobalam, menthol, borneol, artificial cow-bezoar, polyglycol 6000. The item of physicochemical identification in the former quality standard is deleted; the thin layer identification of the borneol and the menthol, the thin layer identification of indigotin or indirubin and cholic acid or deoxycholic acid and the item of mensuration of bilirubin content are revised; the thin layer identification of the myrobalam, the layer identification of the liquorice and the item of the mensuration and detection of glycyrrhizic acid content are added, and the quantitative index of the liquorice content in each pill can not be less than 32 microgrammes, which is calculated according to the glycyrrhizic acid (C₄₂H₆₂O₁₆). The invention improves the controllability of the quality standard of the pharynx-clearing dropping pill and further ensures the internal quality of the product, and the invention has great meaning for promoting the product sale and guaranteeing the medication safeness for the patient.

The invention discloses cholic acid compound activated thioester (1), also discloses s preparation method for the compound and the application thereof in the cholic acid conjugate therapeutic drug; (R 1, R2, and R3 in the formula express H, alpha-OH, beta-OH, =O ; R1, R2 and R3 can be same and can also be different; R4 presents 2- pyridil and 2- benzothiazolyl ).

The invention relates to a mesoporous medical adsorption material, belonging to the field of mesporous material. The mesoporous adsorbent material of the invention has orderly mesoporous opening structure and composition of SiO2; amino modification of the surface of the material can be carried out. The adsorbent material of the invention can carry out the medical adsorption on various harmful matters such as bilirubin, cholic acid, uric acid, etc., and has good adsorption effect.

The invention discloses a synthesis method and use of a cholic acid-modified polyamino acid block copolymer. A hydrophilic chain of the block copolymer is polyethylene glycol, a hydrophobic chain of the block copolymer is polyamino acid, the tail end of the polyamino acid is modified through micromolecular cholic acid, the side chain of the polyamino acid is a lipoyl group, and lipoic acid and an amino group of hydrophobic polyamino acid undergo a reaction to produce an amido bond. Through crosslinking of a self-assembled nanometer micelle of the cholic acid-modified polyamino acid block copolymer, a stable crosslinked reduction-sensitive polymer nanometer micelle is obtained so that the nanometer micelle is not easily damaged in vitro and in blood and nanometer micelle-coated drug stability is guaranteed. When the nanometer micelle enters a cancer cell, the nanometer micelle can be fast decrosslinked and dissociated and the coated drug can be fast released and produce high efficiency treatment effects. The cholic acid-modified polyamino acid block copolymer solves the problems of early release of a drug in vivo, low carrying efficiency and a slow release rate in cells.

The invention discloses a quality inspection method of a traditional Chinese medicine composition twenty-five-ingredient lung disease capsule and a preparation thereof. On the basis of the primary standard, high-performance liquid chromatography (HPLC) is additionally used to perform limit test to aconitine in the twenty-five-ingredient lung disease capsule, and simultaneously the high-performance liquid chromatography (HPLC) is adopted to perform quantitative detection to active ingredients of hydroxysafflor yellow A, swertiamarin and cholic acid, as well as differentiation to fructus terminaliae billericae, sandalwood, kummel, Baxiaga and licorice root. The method improves the product quality, and ensures that the preparation can guarantee the drug use safety and the effectiveness while curing diseases.

The present invention discloses an adefovir dipivoxil cholic acid class derivative and also relates to a preparation method and applications thereof at the medical aspect. The adefovir dipivoxil cholic acid class derivative is a hepatic targeting precursor drug of adefovir; compared with the adefovir dipivoxil, the adefovir dipivoxil cholic acid class derivative can improve the concentration of the adefovir in liver after being taken orally, and the adefovir dipivoxil cholic acid class derivative can be used as a preferential drug for the treatment of resisting virus and especially resisting hepatitis virus.

The invention discloses a method for detecting the quality of An'erning granules. The method comprises a method for identifying cholic acid and bergenin and a method for determining content of glycyrrhizic acid, the bergenin and bilirubin. Experimental study proves that spots with different colors are displayed at a position, which corresponds to a color spectrum of a reference substance, in the color spectrum of a sample by the identification method in the quality detection method; and negative control is not interfered. Results show that the content determination method is used for determining the content of the glycyrrhizic acid and the bergenin in the An'erning granules, has a good linear relation, and high repeatability and stability, and can control the quality of An' erning granules accurately and strictly; and moreover, the accuracy of recovery tests is high.

The present invention provides amphiphilic telodendrimers that aggregate to form nanocarriers characterized by a hydrophobic core and a hydrophilic exterior. The nanocarrier core may include amphiphilic functionality such as cholic acid or cholic acid derivatives, and the exterior may include branched or linear poly(ethylene glycol) segments. Nanocarrier cargo such as hydrophobic drugs and other materials may be sequester in the core via non-covalent means or may be covalently bound to the telodendrimer building blocks. Telodendrimer structure may be tailored to alter loading properties, interactions with materials such as biological membranes, and other characteristics.

The invention relates to a glycated albumin (GA) enzymatic detection kit, which comprises a GA reagent 1 and a GA reagent 2. The GA reagent 1 comprises tris(hydroxymethyl)aminomethane, aminoantipyrine (4-AAP), protease K, calcium acetate (CaAc2), potassium ferrocyanide trihydrate (K4Fe(CN)6.3H2O), copper acetate (CuAc2) and Cholic acid. The GA reagent 2 includes tris(hydroxymethyl)aminomethane, N-ethyl-N-(2-hydroxy-3-sulfopropyl)-3-methylaniline sodium salt (TOOS), fructosaminase, Triton X-100 and peroxidase. The invention aims to provide the glycated albumin enzymatic detection kit and its detection method with the characteristics of strong specificity, high sensitivity, short time, simple operation mode, and accurate and reliable detection result.

The invention relates to new derivatives of berberine coupled with cholic acid at the ninth position through an ester bond with a general formula (I) and preparation methods thereof. The invention also relates to the preparation methods of compounds of the present invention, and an application of the compounds as drugs especially as the drugs for tumor treatment. R1 in the formula (I) is hydroxy and/or carbonyl; and R2/R3 is hydrogen, hydroxy and/or carbonyl.

The invention provides a cationic lipoid plastid presented as formula I, wherein R is a substituent presented as formula II, III, IV and V, R' is C6-C40 of alkyl, C6-C40 of substituted alkyl, a cholesterol group or a cholic acid group. The novel cationic lipoid plastid takes PAMAM as a hydrophilic head and takes two hydrophobic chain sections as a hydrophobic tail, is good in biocompatibility and degradable, and provided with excellent properties of the PAMAM and lipoid plastid simultaneously. The invention further provides a preparation method of the cationic lipoid plastid presented as formula I. The method is high in generality, a plurality of compounds in similar structures can be obtained through the method, and a methodology platform is provided for studying the structure property relations of the compounds.

The invention relates to a spherical silicon dioxide hollow material and a preparation method thereof. The spherical silicon dioxide hollow material is prepared from cholic acid and silicon source serving as raw materials in a molar ratio of 1: 2-6. The preparation method comprises the following steps: dissolving the cholic acid into aqueous solution of ammonia to form alkali aqueous solution of cholic acid ammonium salt, reacting the alkali aqueous solution with the silicon source with stirring, standing and ageing the solution, filtering a reaction product, and flushing and drying the product. The silicon source is a mixture of 3-aminopropyltriethoxysilane and ethyl orthosilicate in a ratio of 1: 1-5. The grain diameter of the spherical silicon dioxide hollow material is 100 to 1,000 nanometers, and the wall thickness is 50 nanometers. A micro-molecular biological surfactant is used as a template, an organic solvent is not used in the reaction, a template agent does not need to be further removed, the raw materials are easily obtained and are nontoxic, the operation is simple and convenient, and the conditions are mild. The silicon dioxide hollow material prepared by the method is particularly applicable in biomedicine related fields of medicament delivery, active guest molecule protection and the like.

The invention discloses a metabonomics-based application of endogenous small-molecular substances in rapid detection of hepatotoxicity. The endogenous small-molecular substances are 12 hepatotoxicity biomarkers, i.e., L-alanine, L-phenylalanine, L-carnitine, L-carnitine palmitoyl, tryptophan, arachidonate, cholic acid, lysophosphatidylcholine (14:0), lysophosphatidylcholine (16:1), lysophosphatidylcholine (18:2), lysophosphatidylcholine (20: 3) and hemolysis phosphatidyl ethanolamine (18:2); and the endogenous small-molecular substances also refers to 3 special hepatotoxicity biomarkers, i.e. L-carnitine, cholic acid and lysophosphatidylcholine (14:0). By adopting the hepatotoxicity biomarkers, the discovery and diagnosis of the liver injury can be earlier than those of the existing biochemical detection indexes, the hepatotoxicity biomarkers can be well used for preventing, discovering and treating the hepatotoxicity, the limitation of the existing indexes can be overcome, and accurate detection information can be provided in time.

The invention discloses a method for preparing obeticholic acid, 7-ketolithocholicacid and ursodeoxycholic acid. Cholic acid is used as a raw material for preparing obeticholic acid through selectiveprotection by a 3-alpha-hydroxyl group, selective oxidation of a 7-alpha-hydroxyl group, esterification of a 24th carboxyl group, methanesulfonation of a 12-alpha-hydroxyl group, elimination, hydrolysis, silylation, condensation, hydrolysis, catalytic hydrogenation, carbonyl reduction and other reactions; an intermediate is subjected to catalytic hydrogenation to prepare the 7-ketolithocholicacidand then is reduced to prepare the ursodeoxycholic acid. The method provided by the invention uses cheap cholic acid as the raw material, and has advantages of novel synthesis method, low cost, high yield, mild reaction condition, high simplicity in operation, environmental friendliness and high convenience in industrial production.