60 results about "Acetazolamide" patented technology

The invention relates to a drug-loaded contact lenses and a corresponding preparation method. The drug-loaded contact lenses are obtained firstly through UV-curing or heat-curing and then through drug-liquid immersion. The drug-loaded contact lenses can be particularly defined as a combination of a contact lenses material containing cyclodextrin and drug molecules and comprise the contact lenses formed by combining a crosslinked polymer hydrogel formed by copolymerizing mono-substituted cyclodextrin monomers, polymerization monomers and crosslinkers with one kind or a plurality of acetazolamide, methazolamide, puerarin or prostaglandin. The characteristic of forming inclusion compounds between the cyclodextrin molecules and drug molecules is adopted to increase the quantity of loaded drugs so as to reduce the stimulation to eyes by drugs and control the drug release speed for eye diseases of curing glaucoma, etc.

The present invention is directed to a method of treating a subject for a pulmonary disease by administering a therapeutically effective amount of a compound of the formula:

wherein R₁, R₂ or R₃ are each independently a C₁ to C₆ alkyl, a halogen, a sulfate, or a phosphate. The pulmonary disease in the subject can be hypoxic pulmonary vasoconstriction, pulmonary edema, pulmonary hypertension, asthma, chronic obstructive pulmonary disease, cystic fibrosis, interstitial fibrosis, high altitude residence, sleep apnea syndrome, atrial septal defects, and pulmonary diseases associated with other conditions. If this same compound is modified so that R₁, R₂ or R₃ each independently is a C₁ to C₆ alkyl and the compound is not a carbonic acid inhibitor, it can be administered to a subject to block hypoxic pulmonary vasoconstriction and/or prevent high altitude pulmonary edema. Additional aspects of the present invention include an inhalable composition comprising the compound of the above formula without modification and an inhalable carrier, as well as the above modified compound.

The invention discloses an acetazolamide sustained-release capsule and a preparation method thereof. The acetazolamide sustained-release capsule is mainly composed of the following raw materials in accordance with parts by weight: 65 to 85 parts of acetazolamide, 15 to 35 parts of microcrystalline cellulose and 0.1 to 0.5 part of sodium dodecyl sulfate, and the acetazolamide sustained-release capsule further contains pharmaceutically acceptable pharmaceutic adjuvants. The preparation method comprises the following steps that the required raw materials and the adjuvants are smashed and uniformly mixed, and then the raw materials and adjuvants are prepared into soft materials after being uniformly mixed; a low-temperature refrigerator is turned on, the soft materials are put into an extrusion rolling machine to be extruded and rolled, and then drug containing micro pills with uniform particle sizes are formed; after the drug containing micro pills are dried, acetazolamide sustained-release micro pills are obtained; and the acetazolamide sustained-release micro pills are encapsulated to obtain the acetazolamide sustained-release capsule. The acetazolamide sustained-release capsule prepared by using the preparation method has little side effect and is convenient for patients to treat for a long time, and the drug compliance is improved. When the acetazolamide sustained-release capsule is taken once a day, the concentration of effective drugs in vivo can be guaranteed for 24 hours, and the toxic and side effects caused by a higher peak value of the blood drug concentration due to normal preparations can be reduced.

The invention discloses a pharmaceutical composition of acetazolamide and its medical application. The pharmaceutical composition of acetazolamide provided by the invention contains acetazolamide and a natural acetazolamide with a novel structure isolated from the dried root of Polygonum cuspidatum. When the product compound (I), acetazolamide and the natural product compound (I) act alone, the prevention and treatment effect on Parkinson's disease is weak; when the two act together, the prevention and treatment effect on Parkinson's disease is significantly improved, and can be developed The medicine for preventing and treating Parkinson's disease has outstanding substantive features and remarkable progress compared with the prior art.

The invention relates to a hypoglycemic composition containing pioglitazone and a preparation method of the hypoglycemic composition. The composition consists of the following components in parts by weight: 0.05-0.15 parts of pioglitazone, 0.5-2.8 parts of acetazolamide, 1.2-3.4 parts of vitamin A, 0.4-0.8 parts of arabinose, 0.6-2.0 parts of folic acid, 0.5-1.5 parts of benzoic acid, 0.3-0.9 parts of taurine, 0.8-1.4 parts of acesulfame, 0.2-0.6 parts of lentinan , 0.7-1.0 part of vitamin B12, 0.4-0.8 parts of proline, 0.6-1.2 parts of calcium citrate, 0.2-0.8 parts of xylitol, 0.05-0.08 parts of complex enzyme, 0.9-2.5 parts of magnesium stearate, 2-6 parts of carboxymethyl starch and 5-40 parts of a binding agent. The hypoglycemic composition disclosed by the invention, which is added with adjuvant materials, can be prepared into tablets or capsules by virtue of a conventional process; the hypoglycemic composition is simple in using method; and upon clinical verification, the hypoglycemic composition is good in hypoglycemic and diuretic effects.

The invention discloses an application of chrysin in preparing an anti-hypoxic drug. The anti-hypoxic drug is a drug for preventing and treating hypoxic injury diseases which are high-altitude low-pressure oxygen deficit-caused acute high altitude diseases, cerebral ischemia hypoxic diseases or myocardial ischemia hypoxic diseases. The application has beneficial effects as follows: experiments prove that the chrysin has a remarkable anti-hypoxic effect, and effect tending to be better than that of acetazolamide; the anti-hypoxic drug prepared by applying the chrysin as an active ingredient can be used for preventing and treating hypoxic injuries or treating various hypoxic pathological states caused by oxygen content drop in external environment, also can be used for preventing or treating hypoxic pathological states of heart, brain, respiratory system, and the like as external normal oxygen cannot sufficiently get to a body due to diseases, and the like, and further can be used for preventing or treating the pathological state that relative oxygen supply is insufficient as oxygen consumption needed for activities of the body exceeds physiological mobilization ability.

The invention discloses a culture medium for amplification of human umbilical cord mesenchymal stem cells. The culture medium is prepared from a basic culture medium and the following components added into the basic culture medium of glutathione, alpha-tocopherol, eudesmin, estradiol valerate, acetazolamide, sodium selenite, vitamin C and insulin. Exogenous serum is not added into the culture medium provided by the invention, the components are clear, and the components have a synergistic effect, so that the proliferation of the umbilical cord mesenchymal stem cells and the secretion of cell factors are promoted. The added ingredients such as eudesmin, estradiol valerate, acetazolamide and the like not only avoid adding serum into the culture medium to form ingredients with potential safety hazards, but also can improve the proliferation efficiency of cells, a large number of umbilical cord mesenchymal stem cells can be obtained within a short time, and the content of cell factors in the culture solution is increased. The invention also provides a culture method of the human umbilical cord mesenchymal stem cells, which adopts the culture medium provided by the invention, and is safe, efficient, simple and convenient in process and easy to operate.

The invention provides a eutectic crystal of acetazolamide and proline and a preparation method of the eutectic crystal and relates to the field of medicine eutectic crystals. A molecular formula of the medicine eutectic crystal is [C4H6N4O3S2.C5H9NO2] and a basic structural unit is composed of an acetazolamide molecule and a proline molecule. The medicine eutectic crystal belongs to a triclinic crystal system and a space group is P-1. Acetazolamide and the proline are used as raw materials and the medicine eutectic crystal is prepared by adopting a cooling method and a solvent volatilizationmethod respectively. According to the medicine eutectic crystal provided by the invention, the solubility of acetazolamide is improved and the bioavailability of acetazolamide is easy to improve. A eutectic crystal structure does not contain any solvent molecule so that the eutectic crystal structure still can keep stable after being placed for a long time under a room-temperature condition. The preparation method and a technological route of the medicine eutectic crystal are simple and feasible and large-scale production is convenient to realize.

A method for preparing an acetazolamide microparticle having a mean particle size ranged between 0.36 μm and 18 μm is provided. The method includes steps of dissolving an acetazolamide in a solvent to form an acetazolamide solution; and mixing the acetazolamide solution with a supercritical fluid at a temperature and a pressure above a critical point of the supercritical fluid for forming the acetazolamide microparticle, wherein the solvent is miscible with the supercritical fluid.

The invention relates to an acetazolamide derivative, a preparation method thereof and an application of the acetazolamide derivative in preparation of a medicine for treating coronary heart disease.The acetazolamide derivative is an acetazolamide derivative I obtained by bonding a carbonic anhydrase inhibitor acetazolamide Ac and a non-steroidal anti-inflammatory drug which is represented by aspirin As and has a carboxylic acid group through a linking group, and the structural general formula is shown as a formula 1 shown in the specification, wherein in the formula 1, OOC-NSAID represents anon-steroidal anti-inflammatory drug in which one carboxylic acid proton is lost, representative are acetazolamide derivatives containing aspirin or indomethacin, and the acetazolamide derivative I has good activity of inhibiting carbonic anhydrase 9, can effectively improve myocardial anoxia injury in an anoxia microenvironment, and is applied to preparation of the medicine for treating coronaryheart disease.

The invention especially relates to a preparation process for an intermediate of acetazolamide, belonging to the field of medicine synthesis. The process comprises the following steps: with thiosemicarbazide and carbon disulfide as reactants and a mixture of pyridine and piperidine as a solvent, carrying out a reaction; and then successively carrying out purification and drying so as to obtain 2-amino-5-mercapto-1,3,4-thiadiazole, i.e., the intermediate of acetazolamide.

The present invention relates to an application of pyrroloquinoline quinone (PQQ) in the preparation of a medicament used for preventing and treating acute altitude sickness and acute altitude hypoxia injury. Pyrroloquinoline quinone has the effect of preventing and treating acute high altitude hypoxia injury, and as a drug for the prevention and treatment of acute altitude sickness, the efficacy thereof is equivalent to that of acetazolamide, however acetazolamide has many toxic side effects; meanwhile, as a coenzyme, pyrroloquinoline quinone has the advantages of low toxicity and is easily acceptance by patients. In addition, by means of exhaustive swimming experiments of mice under the conditions of hypoxic exposure, PQQ has been shown to have the feature characteristics of improving the working capabilities of a subject at a high altitude, however acetazolamide has not been found to have said effect.