摘要:
The invention provides a novel process for the production of erythropoietin, which is a promising medicine for curing anemia, from human urine containing the same. The inventive method comprises adjusting the pH value of the urine in the range from 6 to 8, if the pH value of the urine is out of this range, and contacting the thus pH-controlled urine with a specific adsorbent so as that the erythropoietin is selectively adsorbed on the adsorbent. The adsorbed erythropoietin is then eluted out by use of an eluant solution to give the product in a partially purified form.
摘要:
An inhibitor of the proliferation of herpesviruses and of the recurrence of affections caused by their latent infection, which is an active material obtained by fractional purification of the aqueous extract from cultured Lentinus edodes mycelia.
摘要:
An anti-inflammatory agent comprising as an active component an inhibitor specifically inhibiting a thiol protease, which is obtained from human urine by extraction and purification. This agent has an action of inhibiting a disease caused by a thiol protease. This anti-inflammatory agent is prepared by a process in which a thiol protease inhibitor is extracted and purified from human urine by adopting in combination at least two treatments selected from a treatment with a molecular filter, a treatment with an ion exchanger, a treatment with an adsorber and an affinity chromatographic treatment.
摘要:
Gastric acid secretion inhibiting substance obtainable from mammalian urine by conventional method is fractionated into the first and second components by gel filtration, adsorption and desorption on ion exchanger or electrophoresis detecting each component by biological test methods. The activities of the two components differ from each other in the biological tests.The first component is a glucoprotein-like substance of M.W. 100,000 and the second component is a peptide-like substance of M.W. about 6,000.
摘要:
LEM which is an aqueous extract of a mycelial culture of Lentinus Edodes and has a sugar composition composed of arabinose, xylose, glucose, mannose, galasctose, fucose and rhamnose, as well as a fraction of LEM which corresponds to molecular weights of 10,000 to 1,000,000 daltons and has a sugar composition composed of arabinose, xylose, glucose, mannose and galactose are provided as agents for inhibiting the adsorption of herpesviruses such as herpes simplex to the cells.
摘要:
A membrane filter of 0.025 to 0.05 .mu. in pore size is treated by passing the solution of a water-soluble high molecular substance such as albumin, dextran, polyvinylpyrrolidone, polysorbate 80, gelatin or the like through the membrane filter. Employing the filter thus treated, the solution of a physiologically active substance of human origin such as human growth hormone, kallikrein, trypsin inhibitor, epidermal growth factor, leucocyte interferon etc. is filtered at high recovery rate of the active substance avoiding the adsorption of the active substance onto the filter. By the filtration, harmful viruses such as Creutzfeldt-Jacob disease pathogen which may exist in the physiologically active substance can be removed.
摘要:
Human urine kallikrein dissolved in water is made heat-stable by the addition of a citric acid salt such as sodium citrate, so that an aqueous solution containing the kallikrein and the citric acid salt can be sterilized at 60.degree. to 70.degree. C.
摘要:
A novel peptide having molecular weight of 31,000 (SDS-PAGE) is obtained from aqueous extract of Natto or the culture of Bacillus natto by purification procedures including alcohol fractionation and/or salting out and hydrophobic chromatography, and the physicochemical properties, including the amino acid sequence, of the peptide are determined. The peptide is active in fibrinolysis, exhibits strong thrombolytic activity by oral administration and is useful as an oral thrombolytic agent.
摘要:
There are provided thrombolytic agents suited for oral administration. The agent comprises a proteolytic enzyme of subtilisin family, such as subtilisin BPN', subtilisin Carsberg, subtilisin amylosacchariticus, etc., produced by microorganisms belonging to genus Bacillus, such as Bacillus subtilis, Bacillus licheniformis, Bacillus amyloliquefaciens, etc. and, even when administered orally, exhibits thrombolytic activity.
摘要:
Antiserum which can recognize all subtypes of human leukocyte interferon is prepared from the blood of an animal immunized with partially purified human leukocyte interferon obtained from a culture of human leukocyte stimulated with Sendai virus.The antiserum is added to a column whereon concentrated culture broth of human leukocyte has been immobilized to adsorb impurities, the effluent is added to a column whereon partially purified human leukocyte interferon has been immobilized to adsorb anti-human leukocyte interferon antibody and then the antibody is eluted from the column.The antibody thus obtained recognizes all subtypes of human leukocyte interferon and can be separated by a chromatography to each monoclonal antibody which recognizes a single subtype.Employing these antibodies, the subtypes of human leukocyte interferon or their antibodies in a sample can be analized or assayed.