摘要:
A process for preparing an active animal cell-growth-enhancing fraction of a hydrolysate of plant tissue, animal tissue or microorganism ultrafiltrate material, especially a fraction of a yeastolate ultrafiltrate, comprising forming a precipitate from said fraction with a water-soluble solvent is disclosed. Such solvents as alkanols, alkyl sulfoxides, ketones or alkyl nitriles, especially lower (C1-C5) alkanols, particularly ethanol, can be used. The invention also relates to an active animal cell-growth-enhancing fraction of a hydrolysate of plant tissue, animal tissue or microorganism ultrafiltrate material, especially a fraction of a yeastolate ultrafiltrate, substantially free of aromatic and methyl group bearing compounds which has improved cell-growth-enhancing properties.
摘要:
The invention provides new inhibitors of protein glycation, identified from compound libraries by a high throughput screening assay. The anti-glycation agents so identified are characterized by a variety of chemical structures and are useful for the prevention or treatment of age-, diabetes-, and smoking-related complications, including neuropathy, nephropathy, ocular pathologies, or the loss of mechanical properties of collagenous tissues. Among compounds identified as having the anti-glycation activity, of special interest are epinephrine and its analogs, in particular D-epinephrine and its analogs, which are particularly useful for the prevention or treatment of age-, diabetes-, and smoking-related ocular pathologies.
摘要:
A brake control device for a vehicle includes a master cylinder generating a master cylinder hydraulic pressure in response to a brake pedal depressing force, a wheel cylinder connected with the master cylinder via a hydraulic conduit, a stroke simulator connected to a branch hydraulic conduit branching from the hydraulic conduit, a first solenoid valve connecting or disconnecting the master cylinder with the wheel cylinder and disposed at the hydraulic conduit between a branch portion where the branch hydraulic conduit branches from the hydraulic conduit and the wheel cylinder, a second solenoid valve connecting or disconnecting the master cylinder with the stroke simulator, a pressure controlling mechanism having a pressure source and connected at a portion of the hydraulic circuit between the first solenoid valve and the wheel cylinder, and a controller for controlling the pressure controlling mechanism, the first solenoid valve and the second solenoid valve.
摘要:
Hirudin is the most potent and specific thrombin inhibitor and is derived from the medicinal leech. It is reported to inhibit thrombin with an equilibrium dissociation constant (K.sub.i) value of 2.2.times.10.sup.-14 M. synthetic thrombin inhibitors have been designed based on the hirudin sequence but with a dramatically reduced size. The bulky active site inhibitor segment, hirudin.sup.1-48, has been substituted by small non-substrate type active site inhibitors of thrombin, e.g., dansyl-Arg-(D-pipecolic acid). The linker segment has also been modified using a combination of .omega.-amino acids to reduce the molecular weight but retaining sufficient length to span the two principal binding domains. Among the inhibitors designed, dansyl-Arg-(D-pipecolic acid)-(12-aminododecanoic acid)-4-aminobutyric acid)-Asp-Tyr-Glu-Pro-Ile-Pro-Glu-Glu-Ala-(L-.beta.-cyclohexylalamine)-(D-Glu)-OH (SEQ ID NO:45) showed the highest affinity and displays a competitive-type inhibition. The incorporation of the non-substrate type active site inhibitor segment and the linker of .omega.-amino acids into the bivalent thrombin inhibitors not only improved in vitro thrombin inhibitory activity to the pM level, overcame proteolytic susceptibility at the level of the "normal" scissile bond and confered high in vivo activity.
摘要:
The invention relates to a new “gene-switch” (cumate-inducible switch) for mammalian cells. This switch is as useful in the development of expression systems and cell-based assays for functional genomics as in the generation of viral vectors for gene therapy.
摘要:
A brake control device for a vehicle includes a master cylinder, a wheel cylinder, a brake pedal behavior simulator, a normally-open type electromagnetic valve, a normally-closed type electromagnetic valve, and a brake pressure control device. The brake pressure control device includes a pump, a reservoir, and two electromagnetic valves to increase and decrease wheel cylinder hydraulic pressure. When the brake pressure control device is normally operated, a hydraulic pressure in the wheel cylinder is controlled by the brake pressure control device. On the other hand, when the brake pressure control device malfunctions or is abnormally operating, the wheel cylinder hydraulic pressure is controlled by hydraulic pressure generated from the master cylinder. At least the normally-closed type electromagnetic valve is opened when the brake pedal is in the non-operational state.
摘要:
The invention relates to a new “gene-switch” (cumate-inducible switch) for mammalian cells. This switch is as useful in the development of expression systems and cell-based assays for functional genomics as in the generation of viral vectors for gene therapy.
摘要:
A catecholamine or related compound of formula (I) having (S)-configuration at β-carbon and having a lipophilicity greater than (S)-noradrenalme, a physiologically tolerated salt thereof, a prodrug thereof, a physiologically functional derivative thereof or any mixture thereof is useful as an anti-angiogemc agent A catecholamine or related compound of formula (II) in which a β-hydroxy group has been modified is also anti-angiogemc
摘要:
A spool valve includes a sleeve and a spool. The sleeve has a first communicating hole opening into the cylinder bore and a second communicating hole opening into the cylinder bore and separated from the first communicating hole in the axial direction of the cylinder bore. The spool is fluidtightly accommodated in the cylinder bore to slide and has one end portion which opens and closes the first communicating hole upon sliding operation thereof and the another end portion which opens and closes the second communicating hole upon sliding operation thereof. At least one of the end portions has an end surface extending from the outer circumference approximately at a right angle to the spool axis and an inclined surface which progressively decreases a diameter of the spool from the end surface.
摘要:
A method of recovering biologically active somatotropins which are produced as insoluble refractile bodies in transformed microorganisms which comprises dissolving refractile bodies in a denaturant and 2-amino-2-methyl-1-propanol, homogenizing, and diluting to fold.