519 results about "Xanthine" patented technology

The invention provides methods of increasing the production of polypeptides, optionally recombinant polypeptides, from mammalian cells using xanthine derivatives or hybrid polar compounds and cultures containing the same. Combinations of inducers including a hybrid polar compound and/or a xanthine derivative and/or an alkanoic acid can also be used, optionally at temperatures less than 37° C.

Personal care composition comprising from about 0.05% to about 5% of at least one aquaporin-stimulating compound selected from the group consisting of xanthine, caffeine; 2-amino-6-methyl-mercaptopurine; 1-methyl xanthine; 2-aminopurine; theophylline; theobromine; adenine; adenosine; kinetin; p-chlorophenoxyacetic acid; 2,4-dichlorophenoxyacetic acid; indole-3-butyric acid; indole-3-acetic acid methyl ester; beta-naphthoxyacetic acid; 2,3,5-triiodobenzoic acid; adenine hemisulfate; n-benzyl-9-(2-tetrahydropyranyl)adenine; 1,3-diphenylurea; 1-phenyl-3-(1,2,3-thiadiazol-5-yl)urea; zeatin; indole-3-acetic acid; 6-benzylaminopurine; alpha-napthaleneacetic acid; 6-2-furoylaminopurine; green tea extract; white tea extract; menthol; tea tree oil; ginsenoside-RB1; ginsenoside-RB3; ginsenoside-RC; ginsenoside-RD; ginsenoside-RE; ginsenoside-RG1; ginseng root extract; ginseng flower extract; pomegranate extract, extracts from Ajuga turkestanica; extracts from viola tricolor and combinations thereof; an additional ingredient selected from the group consisting of niacinamide, glycerin and mixtures thereof, and a dermatologically-acceptable carrier.

(Aza)indolizine derivatives represented by Formula (I) having xanthine oxidase inhibitory activities and useful as agents for the prevention or treatment of a disease associated with abnormality of serum uric acid level, prodrugs thereof, salts thereof or the like. In Formula (I), 0 to 2 of X¹, X², X³ and X⁴ are a nitrogen atom and the others are CR¹; one of T¹ and T² represents cyano and the other represents a group represented by Formula (A), with the proviso that when T¹ is cyano, at least one of X¹ to X⁴ is a nitrogen atom; R¹ independently represents a hydrogen atom, a halogen atom, a hydroxy group, C_1-6 alkyl, C_1-6 alkoxy or the like; ring U represents a benzene ring or the like; m represents integral number from 0 to 2; R² independently represents a fluorine atom, a hydroxy group or the like.

Method for preparing 8-(3-aminopiperidin-1-yl)-xanthine derivatives (I) and their enantiomers and salts. Method for preparing 8-(3-aminopiperidin-1-yl)-xanthine derivatives of formula (I) and their enantiomers and salts by: (a) reacting an 8-X-xanthine (III) with 3-phthalimidopiperidine (A), or its enantiomer; (b) deprotecting the product (II); and (c) optionally conversion to salt. X : halo or sulfonate ester, especially bromo; R 1>phenylcarbonylmethyl, benzyl, naphthylmethyl, pyridinylmethyl, pyrimidinylmethyl, (iso)quinolinylmethyl, quinazolinylmethyl, quinoxalinylmethyl, naphthyridinylmethyl or phenanthridinylmethyl, all optionally substituted by one or two, same or different, Ra; R 2>1-3C alkyl, cyclopropyl or phenyl; R 3>2-buten-1-yl, 3-methyl-2-buten-1-yl, 2-butyn-1-yl, or 2-(fluoro, chloro, bromo, iodo, methyl, trifluoromethyl or cyano)-benzyl; Ra : hydrogen, fluoro, chloro, bromo, cyano, methyl, trifluoromethyl, ethyl, phenyl, methoxy, di- or tri-fluoromethoxy, or two Ra on adjacent C atoms complete OCH 2O or OCH 2CH 2O Independent claims are also included for the following: (1) (R) and (S)-3-phthalimidopiperidine as new compounds; and (2) methods for preparing the compounds of (1). [Image] [Image] - ACTIVITY : Antidiabetic; Antiarthritic; Anorectic; Osteopathic. No details of tests for these activities are given. - MECHANISM OF ACTION : Inhibition of dipeptidylpeptidase IV.

The invention relates to application of celery seed extract to preparation of medicine or health-care food for resisting to hyperuricemia and gout and further provides medicine or health-care food for treating hyperuricemia and gout. Celery seed extract serves as the active constituent, and an appropriate number of medical carriers or auxiliary constituents are added, so that a preparation is obtained. The medicine for health-care food is simple in preparation process, the celery seed extract can obviously lower serum uric acid of model mice suffering from hyperuricemia caused by oteracil potassium salt, lower the activity of xanthine oxidase to different degrees, achieve an obvious inhibition effect on arthritis of the mice, prevent and treat hyperuricemia or gout and be applied to preparation of the medicine or health-care food for resisting to hyperuricemia and gout.

This invention relates to novel compounds that are substituted xanthine derivatives and pharmaceutically acceptable salts thereof. For example, this invention relates to novel substituted xanthine derivatives that are derivatives of pentoxifylline. This invention also provides compositions comprising one or more compounds of this invention and a carrier and the use of the disclosed compounds and compositions in methods of treating diseases and conditions for which pentoxifylline and related compounds are beneficial.

An object of the present invention is to provide a composition for external use in which the percutaneous absorbability of vitamin A, vitamin A derivative(s), vitamin C, specific vitamin C derivative(s), xanthine derivative(s), ubiquinone(s) and/or hyaluronic acid is improved.

The composition for external use is prepared by blending (i) a phospholipid and (ii) a mono- or oligo-glycol ether, together with (iv) at least one bioactive component selected from the group consisting of hyaluronic acid, hyaluronic acid derivatives, vitamin A, vitamin A derivatives, vitamin C, specific vitamin C derivatives, xanthine derivatives, ubiquinones, and salts thereof.

The present invention provides compounds and pharmaceutical compositions that are selective antagonists of A_2B adenosine receptors (ARs). These compounds and compositions are useful as pharmaceutical agents.

The invention discloses a fluorescence chemical sensor and a method for simultaneously detecting diversified DNA (deoxyribonucleic acid) glycosylases on single-molecular levels and application of thefluorescence chemical sensor. The fluorescence chemical sensor, the method and the application have the advantages that the fluorescence chemical sensor is based on two different molecular beacons including a molecular beacon modified by 8-hydroxyl guanine and a molecular beacon modified by deoxygenated hypoxanthine, the tail end of the molecular beacon modified by the 8-hydroxyl guanine is labeled by cyanine 3 (Cy3) and quenching groups, the tail end of the molecular beacon modified by the deoxygenated hypoxanthine is labeled by cyanine 5 (Cy5) and quenching groups, the fluorescence chemicalsensor is used for detecting 8-hydroxyl guanine DNA glycosylases and N-methylpurine DNA glycosylases and is different from the traditional molecular beacons which can be severely affected by dynamicsand thermodynamics, signal restoration of the Cy3 and the Cy5 depends on molecular beacon splitting with the DNA glycosylases used as media, the DNA glycosylases can be simultaneously sensitively detected by the aid of the method without optional signal amplification, the activity of hOGG1 and hAAG can be detected by the aid of the method in an ultra-sensitive manner without optional signal amplification, the fluorescence chemical sensor can be easily, conveniently and quickly operated, and accurate and reliable test results can be obtained.

The present invention provides compounds and pharmaceutical compositions that are selective antagonists of A_2B adenosine receptors (ARs). These compounds and compositions are useful as pharmaceutical agents.

The invention discloses lactobacillus gasseri and application thereof in relieving and treating hyperuricemia, and belongs to the technical field of microorganisms. According to the lactobacillus gasseri CCFM1133 disclosed by the invention, the serum uric acid level of hyperuricemia mice and the xanthine oxidase (XOD) activity of serum and a liver can be reduced, and the occurrence of hyperuricemia and gout is reduced; the blood glucose and serum triglyceride (TG) level of a patient with hyperuricemia can be regulated, and the activity of liver catalase (CAT) and glutathione peroxidase (GSH-Px) is improved; expression of ileum ABCG2 is improved, and excretion of intestinal uric acid is promoted; and the intestinal short-chain fatty acid level is improved, and the health is promoted. The lactobacillus gasseri CCFM1133 disclosed by the invention can be used for preparing foods, functional foods or medicines, and has a wide application prospect.

An anti-inflammation substrate for decreasing the proinflammation induced by the cytokines and inhibiting the lung function degeneration is provided. The anti-inflammation substrate includes one selected from the group consisting of a 7-[2-[4-(2-chlorobenzene)piperazinyl]ethyl]-1,3-dimethylxanthine, a 7-[2-[4-(4-nitrobenzene)piperazinyl]ethyl]-1,3-dimethylxanthine, a respective pharmaceutical acceptable salt thereof, and a combination thereof.

The invention discloses a human mesenchymal stem cell adipogenesis inducing and differentiating culture medium and a preparation method thereof. The human mesenchymal stem cell adipogenesis inducing and differentiating culture medium is produced by the following components of an alpha-MEM/HG-DMEM culture medium, 5-50% of percent by volume of fetal calf serum, 0.5-10% of percent by volume of glutamine, 100-400 [mu]M volume of indomethacin, insulin with the concentration of 0.1-20 [mu]g/ml, 10-200 [mu]M volume of 1-methyl-3-isobutyl xanthine, 10-200 nM volume of dexamethasone and 0.1-20 [mu]M volume of spermine. The preparation method includes the following steps that a culture dish is cleaned; the culture medium is provided, and the alpha-MEM/HG-DMEM culture medium is prepared in the culture dish according to a formula; materials are mixed; and mixed liquor is filtered. Multiple histologic origin human mesenchymal stem cells including human mesenchymal stem cells, umbilical cord mesenchymal stem cells and adipose tissue-derived stromal cells are induced to the directional differentiation of adipogenesis cells; differentiating and inducing time of the human mesenchymal stem cells isshortened, the preparation method is convenient, and the differentiating and the inducing of human mesenchymal stem cell adipogenesis can be achieved stably and efficiently.

The present invention relates generally to compounds of formula (I):

wherein X is a five or six-membered heteroaromatic ring, containing one to four heteroatoms, selected from nitrogen, oxygen, or sulfur, provided that at least one heteroatom is nitrogen; and

• • G¹ and G² are independently CH or N.

The present invention also relates to the preparation of the compounds, pharmaceutical formulations thereof, and their use in medicine as potent or selective A_2B adenosine receptor antagonists and their uses for treating asthma, autoimmune diseases and retinal vascular diseases.

The invention relates to a method for screening non-essential regions for replication of a goat pox virus and universal transfer vectors for same. The method comprises the steps of amplifying two-end gene segments of any two regions of a goat pox virus gene by using a PCR (Polymerase Chain Reaction) method; then, inserting an enhanced green fluorescent protein (EGFP) gene and a xanthine-guanine phosphoribosyl transferase (gpt) gene expression cassette into the segments; establishing two universal transfer vectors of the goat pox virus; and acquiring a recombinant virus expressing an exogenous gene stably from the transfer vectors, thereby determining the selected regions to be non-essential regions for replication of the goat pox virus, wherein each universal transfer vector contains one unique restriction enzyme cutting site Sal I and allows gene expression cassettes of other items to insert in. The recombinant virus obtained by means of the two universal transfer vectors provided by the invention not only has a growth performance similar to a parent virus, but also has better safety because a plurality of toxicity related genes in a genome are knocked out in an orientation way, and has the potential to be developed into an attenuated vaccine strain for gene engineering.

The present invention provides a mesenchymal stem cell adipogenic differentiation culture medium, and belongs to the technical field of stem cells. The mesenchymal stem cell adipogenic differentiation culture medium comprises a DMEM/F12 culture medium, and further comprises FBS with a volume percentage of 5-50%, glutamine with a volume percentage of 0.5-5%, antibiotic with a volume percentage of 0.5-5%, 50-500 [mu]M indometacin, 50-500 nM insulin, 5-50 nM dexamethasone, 0.5-5 [mu]M 3-isobutyl-1-methylxanthine, and 0.05-0.5 [mu]M fasudil hydrochloride. The mesenchymal stem cell adipogenic differentiation culture medium of the present invention has advantages of high inducing efficiency and the like.