Means for delivery of active agent

FIELD: pharmaceuticals.

SUBSTANCE: invention relates to pharmaceutical industry and biotechnology, namely to means for delivery of an active agent comprising a liposomal suspension complex with a chitosan conjugate which is a compound of formula (C6O4H9NH2)m(C6O4H9NHX)n, wherein the substituent on the amino group X is a monomethoxy-PEG succinate, m and n are the number of units in the molecule, the m/n ratio being 6 to 19, and chitosan is used with a molecular weight of 15,000 to 120,000 Da, while liposomes are associated with the chitosan conjugate non-covalently.

EFFECT: invention provides improvement in stability of liposomal suspensions.

1 cl, 4 dwg

 



 

Same patents:

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention refers to the chemical-pharmaceutical industry and represents a substance-delivering carrier for the substance delivery to a bone marrow cell producing an extracellular matrix containing retinoid as a delivering agent, wherein the substance is a therapeutic agent, which inhibits the beginning, progression and/or recurrence of myelofibrosis.

EFFECT: invention provides the effective inhibition of the beginning, progression and recurrence of myelofibrosis.

10 cl, 14 dwg, 8 ex

FIELD: medicine.

SUBSTANCE: invention represents an encapsulated liposomal antiviral agent based on human interferon alpha-2b for vaginal application, characterised by the fact that each capsule is made in the form of a hollow coating, which encloses a powder excipient and liposomes distributed in the excipient, and sodium alginate, a water-soluble polymer gel former; the excipient consists of lactose, sodium chloride, 12-aqueous disodium hydrogen phosphate and sodium dihydrogen phosphate, whereas each of the liposomes represents a hollow coating containing lecithin, cholesterol and alpha-tocopherol, and a nucleus inside the coating and containing recombinant human interferon alpha-2; the ingredients of the agents are taken in a certain ratio, mg.

EFFECT: maintaining the storage activity of recombinant human interferon alpha-2 and prolonged action in vaginal application.

2 cl, 3 dwg, 6 tbl, 6 ex

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention refers to chemical-pharmaceutical industry and represents a method for reducing extracellular matrix producing cells in lungs or suppressing an increase of the extracellular matrix producing cells in lungs, involving administering into an individual a composition containing (i) a carrier containing retinoid as a targeting agent, and (ii) a pro-drug specified in a group consisting of siRNA, RNA enzyme, anti-sense nucleic acid and DNA/RNA chimeric polynucleotide, which is targeted on HSP47, and vectors expressing said siRNA, RNA enzyme, anti-sense nucleic acid and/or DNA/RNA chimeric polynucleotide.

EFFECT: invention provides using retinoic acid as a targeting agent for the drug delivery to the extracellular matrix producing cells in the lungs.

8 cl, 6 dwg, 3 ex

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention relates to novel crystalline modification (R)-DOPC, which can be applied in pharmaceutical industry. Claimed is novel crystalline form of DOPC and method of its obtaining, as well as its application as component in obtaining medications. Claimed method consists in the fact that crystallisation of (R)-DOPC is carried out in aprotic solvent.

EFFECT: claimed crystalline form of DOPC is characterised by improved stability.

14 cl, 5 ex, 2 tbl, 11 dwg

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention refers to a pharmaceutical composition for treating bladder cancer. The above composition contains an effective amount of valrubicin and dimethyl sulphoxide, as well as polyethoxylated castor oil or one or more substances specified in trimethyl chitosan, mono-N-carboxymethyl chitosan, N-diethylmethyl chitosan, sodium caprylate, cytochalasin B, IL-1, polycarbophil, Carbopol 934P, N-sulphate-N,O-carboxymethyl chitosan, Zonula occludens toxin, 1-palmitoyl-2-glutaroyl-sn-glycero-3-phosphocholine, and represents a dosage form for intra-bladder administration by instillation. The invention also refers to liposomal pharmaceutical compositions containing valrubicin, and methods of treating bladder cancer involving administering the above compositions.

EFFECT: invention reduces bladder irritation and increases the clinical effectiveness in bladder cancer.

12 cl, 3 dwg, 3 tbl, 1 ex

FIELD: medicine, pharmaceutics.

SUBSTANCE: group of invention refers to medicine, namely to oncology, and can be used in treating cancer in a patient. The method involves administering at least one encapsulated chemotherapeutic agent, and at least one amphiphilic block copolymer in this patient. What is also presented is a composition, a kit for treating cancer in the patient and using the amphiphilic block copolymer.

EFFECT: group of inventions provides potentiating the encapsulated chemotherapeutic agent by stimulating the active chemotherapeutic agent release from liposomes by the use of the amphiphilic block copolymer, which is poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer, in the composition.

10 cl, 11 dwg, 3 tbl, 4 ex

FIELD: medicine.

SUBSTANCE: inventions refers to medicine, namely to pulmonology, and can be used for treating a pulmonary disorder in a patient. That is ensured by administering an effective dose of the nebulised liposomal amikacin formulation of 100 to 2,500 mg daily within the cycle of treatment, which involves the period of administration from 15 to 75 days and the following withdrawal period from 15 to 75 days. The cycle of treatment repeats at least twice.

EFFECT: invention provides improving the pulmonary function, which is supported for at least 15 days after the termination of treatment, and increasing the one-second forced expiratory volume (FEV1).

28 cl, 16 tbl, 11 dwg, 3 ex

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention refers to the pharmaceutical industry and represents a composition for the external treatment and prevention of infections caused by the type 1, 2 herpes virus and bacterial complications caused by the herpetic infection, containing lysozyme, peroxidase, povyargol as active ingredients, escin and glycyrrhizinic acid or its salts as anti-inflammatory ingredients, liposomes on the basis of high-active hydrated lecithin in a combination with cholesterol as carriers and pharmaceutically acceptable carriers and excipients, with the ingredients of the composition being taken in certain proportions, wt %.

EFFECT: invention provides extending the range of products for treating and preventing the infections caused by type 1, 2 herpes virus and bacterial complications caused by the herpetic infection.

4 ex, 1 tbl

FIELD: medicine, pharmaceutics.

SUBSTANCE: present invention refers to pharmaceutics and represents a pharmaceutical composition for parenteral administration containing sub-micron particles of dosocahexaenoic acid ester dispersed in a water phase with the use of mixture of at least two surfactants specified in a) at least one fatty acid polyoxyethylene ester and b) at least one phospholipide derivative, as well as a method for preparing the above pharmaceutical composition.

EFFECT: invention provides higher pharmacological activity.

14 cl, 3 dwg, 3 tbl, 2 ex

FIELD: chemistry.

SUBSTANCE: stabiliser includes modified chitosan which is obtained by modifying chitosan particles located in an emulsion of an organic solvent - water, with pH 6.0-6.5, by first reacting a mixture consisting of a carboxylic acid in an organic solvent and a condensing agent, and then with an organic base, wherein the carboxylic acid used is either palmitic acid or stearic acid or dodecanoic acid, the condensing agent used is a mixture of hydroxysuccinimide and an aliphatic carbodiimide or formaldehyde and an aliphatic isocyanide, and the organic base used is triethylamine.

EFFECT: effective liposome composition stabiliser which can be obtained using a simple method.

8 cl, 3 tbl, 5 ex, 7 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to nanotechnology, particularly a method of producing aspirin nanocapsules in a carrageenan envelope. The disclosed method includes preparing an aspirin suspension in benzene; dispersing the obtained mixture into a carrageenan suspension in butanol in the presence of an E472c preparation while mixing at 1000 rps; adding tetrachloromethane; filtering the obtained nanocapsule suspension and drying at room temperature.

EFFECT: method provides a simpler and faster process of producing nanocapsules and increases mass output.

1 dwg, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to encapsulation, particularly to a method of producing albendazole nanocapsules in a sodium alginate envelope. The disclosed method includes adding albendazole to a sodium alginate suspension in hexane in the presence of an E472c preparation while mixing at 1000 rps. The weight ratio of albendazole and sodium alginate is 1:3 or 3:1. Further, 1,2-dichloroethane is added. The obtained suspension of nanocapsules is filtered, washed and dried. The process of producing the nanocapsules is carried out at 25C for 20 minutes.

EFFECT: invention provides a simpler and faster process of producing nanocapsules, reduces losses during production thereof (high mass output).

3 ex, 1 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to encapsulation, particularly a method of producing resveratrol nanocapsules in an envelope made of low- or highly esterified apple or citrus pectin. According to the disclosed method, resveratrol is dispersed in a suspension of low- or highly esterified apple or citrus pectin in benzene in the presence of an E472c preparation while stirring at 1000 rps. Tetrachloromethane is then added. The obtained suspension of nanocapsules is filtered and dried. The process of producing the nanocapsules is carried out at 25C for 10 minutes.

EFFECT: invention provides a simpler and faster process of producing nanocapsules, reduces losses during production thereof (high mass output).

9 ex, 1 dwg

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention refers to pharmaceutical industry, namely to selenium nanocomposites of natural hepatotrophic galactose-containing polysaccharide matrixes, representing water-soluble orange-red powders containing zerovalent selenium (Se0) nanoparticles sized 1-100 nm in the quantitative content of 0.5 - 60 wt %, possessing antioxidant activity for treating and preventing redox-related pathologies, particularly for treating toxic liver damage, to a method for producing and to an antioxidant agent containing the above nanocomposites.

EFFECT: invention provides the targeted agent delivery to liver cells, as well as higher agent accessibility and lower toxic action of selenium.

7 cl, 11 ex, 4 tbl

FIELD: medicine.

SUBSTANCE: declared is a pharmaceutical composition for oral administration, containing methisoprinol, methyl n-hydroxybenzoate, propyl-n-hydroxybenzoate, saccharose or maltose, glycerol, citrus flavouring and purified water.

EFFECT: composition has a pleasant flavour and storage-stable.

2 ex, 1 tbl, 5 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to microencapsulation, in particular, to microencapsulation of antioxidants. Carrageenan was used for the capsule shells, an antioxidant was selected from the group of: vitamins A, C, E, Q10, eleuterococcus, green tea extract, ginseng extract; wherein an antioxidant product portion was dissolved in dimethylsulfoxide, and the mixture was dispersed in a solution of carrageenan in ethanol in the presence of the preparation E472c under stirring at the rate of 1300 rev/s, the antioxidant/carrageenan weight ratio was 1:3, after which a mixture of benzene and water taken in volume ratio of 2:1 was added to the above mix, the resulted suspension was filtered and dried at a room temperature.

EFFECT: simplified and fast process of antioxidant product microencapsulation in carrageenan.

1 ex

FIELD: nanotechnology.

SUBSTANCE: according to the invention method, albendazole is added to the suspension of sodium alginate in butanol in the presence of the preparation E472s when stirring at 1000 revolutions per second. The mass ratio of albendazole and sodium alginate is 1:3 or 3:1. Then acetonitrile is added. The resulting suspension of the nanocapsules is filtered, washed, and dried. The process of production of nanocapsules is carried out at 25C for 20 min.

EFFECT: simplification and acceleration of the process of production of nanocapsules, reduction of losses in their production.

1 dwg, 2 ex

FIELD: chemistry.

SUBSTANCE: according to the method a suspension of resveratrol in heptane was dispersed into a suspension of xanthan gum in butanol in the presence of E472c under stirring at the rate of 1000 rev/s. A mixture of benzene and water taken at a volume ratio of 5:1 or 3:1 was added to the said suspension. The resulted suspension of nanocapsules was filtered, washed and dried. The process was performed at a temperature of 25C within 10 min.

EFFECT: simplified and fast process of nanocapsule production, reduced process losses.

4 ex, 2 dwg

FIELD: nanotechnology.

SUBSTANCE: suspension of aspirin in benzene is produced. The resulting mixture is dispersed into suspension of sodium alginate in butanol in the presence of the preparation E472s when stirring at 1000 rpm/sec. Then chloroform is poured, the resulting suspension of nanocapsules is filtered and dried at room temperature.

EFFECT: simplification and acceleration of the process of production of the nanocapsules, and increase in the yield by weight.

1 dwg, 4 ex

FIELD: nanotechnology.

SUBSTANCE: shell of the nanocapsules is used as apple or citrus high- or low-esterified pectin, and the core - as L-arginine. According to the inventive method, L-arginine is suspended in benzene, the resulting mixture is dispersed into a suspension of apple or citrus high- or low-esterified pectin in benzene in the presence of the preparation E472s while stirring 1000 revolutions per second. Then carbon tetrachloride is added, the resulting suspension of the nanocapsules is filtered and dried at room temperature. The process is carried out for 15 minutes.

EFFECT: simplification and acceleration of the process of producing the nanocapsules, and increase in the yield by weight.

6 ex

FIELD: medicine.

SUBSTANCE: described is a method of obtaining a composite chitosan-based material, which contains aspartic or glutamine amino acids in a quantity from 2 to 5 wt %, as well as calcium phosphates with a ratio of Ca/P from 1.0 to 1.67. The method consists in barbotage through a suspension of calcium phosphates, obtained in situ in a solution of chitosan and aspartic or glutamic acid, with the following lyophilic drying of the foamed products. Porous matrices can be applied in dentistry, maxillofacial surgery, osteoplastic surgery as implants in the treatment of bone tissue defects.

EFFECT: obtained samples are characterised by a uniform porous structure with the simultaneous reduction of calcium phosphate dimensions to a nano-level with the reduction of the number of material obtaining operations.

2 dwg, 5 ex

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