摘要:
A microbe-specific medium for detection of vancomycin-resistant Enterococci in a test sample within 24 hours and preferably within 18 hours. The testing medium provides a selective growth medium for vancomycin-resistant Enterococci and includes specific nutrient indicators which only the target microbe can significantly metabolize and use for growth. The nutrient indicator contain a nutrient moiety and a detectable moiety linked together by a covalent bond. The nutrient indicators produce detectable signals only if the nutrient indicators are hydrolyzed by the Enterococci specific enzymes including null-glucosidase and pyrrolidonyl arylamidase.
摘要:
Amounts of components in a specimen can be analyzed with excellent quantitativity. The analysis includes: measuring an amount of a component to be analyzed in a specimen; measuring an amount of a standard component present originally and homeostatically in the specimen other than the component to be analyzed; determining the amount of the specimen from the amount of the standard component thus measured and a known concentration of the standard component in the specimen; and determining a concentration of the component to be analyzed in the specimen from the amount of the specimen thus determined and the amount of the component to be analyzed thus measured. The quantitative analysis of the present invention allows a component to be analyzed to be measured with high quantitativity as shown in FIG. 1.
摘要:
The invention features a method for evaluating PKC activity in vascular tissues. The invention also features methods for diagnosing cardiovascular and diabetes related disorders, and for identifying and evaluating treatments for cardiovascular or diabetes related disorders. Methods for identifying and evaluating treatments for aging are also included. The methods include measuring PKC activity in monocytes as a surrogate for PKC activity in other tissues.
摘要:
G protein-coupled receptor kinases (GRK) play an important role in phosphorylating and regulating the activity of G protein-coupled receptors. Complementary DNAs (cDNAs)that encode two novel members of the G protein-coupled receptor kinase (GRK) family are provided in the present invention. These cDNAs encode GRK5 (590 amino acids) and GRK6 (576 amino acids) which represent two new members of the GRK family that have distinct tissue distribution and substrate specificity. The availability of the cDNAs enables the generation of reagents to modulate the activity of endogenous kinases. These include dominant negative mutations and antisense oligonucleotides or stably transfected antisense constructs to block expression of the kinase to generate a cell with a reduced ability to desensitize to various agents. Expression of GRK5 and GRK6 also permits identification of specific inhibitors and activators of these two kinases. Such inhibitors and activators may be used therapeutically to either directly modulate the activity of a given receptor or by augmenting the ability of a given therapeutic agent to stimulate a given receptor.
摘要:
A method to assess the level of folate in a biological sample comprises. providing said sample with glycine N-methyltransferase (GMT) and with an excess of S-adenosyl methionine (SAM) and of glycine; providing a control which contains no folate with said GMT and excess SAM and glycine in comparable amounts to those provided to the sample; and comparing the concentration of at least one product formed in the sample with the concentrations of said product formed in the control, whereby the difference in levels of said product in the sample as compared to the control is directly proportional to the level of folate in the sample. Also disclosed is a method to detect and measure the concentration of analytes which can be subjected to protocols that generate hydrogen peroxide. This method comprises measuring the level of hydrogen peroxide by adding peroxidase and a dialkyl phenylene diamine.
摘要:
The present invention provides a method for isotopically labeling a functional group possessed by an amino acid residue of a protein. The present invention also provides a protein whose functional group in an amino acid residue is isotopically labeled. A functional group in an amino acid residue of a protein is substituted with an isotope-labeling group derived from an isotope-labeling compound by making use of the action of an enzyme. In particular, the carboxyamide nitrogen atom in a glutamine residue of a protein is replaced with an isotopically labeled atom by acting a transglutaminase on the glutamine residue.
摘要:
The present invention relates to a method of screening for drug binding to serum proteins by: preparing at least two solutions each including a concentration of a serum protein and a concentration of a candidate drug, wherein the concentration of the candidate drug is different for each of the at least two solutions; exposing each of the at least two solutions to a light source; measuring fluorescent emission by the serum protein or a serum protein-candidate drug complex for each of the at least two solutions upon said exposing; and determining whether a change in fluorescence emission is measured for an increased concentration of the candidate drug, wherein the change in fluorescence emission indicates binding of the candidate drug to the serum protein. A kit useful for performing a fluorimetric screening of drug binding to serum proteins is also disclosed.
摘要:
The present inventors have discovered that Asparagine Synthase is essential for fungal pathogenicity. Specifically, the inhibition of Asparagine Synthase gene expression in fungi results in no signs of successful infection or lesions. Thus, Asparagine Synthase can be used as a target for the identification of antibiotics, preferably antifungals. Accordingly, the present invention provides methods for the identification of compounds that inhibit Asparagine Synthase expression or activity. The methods of the invention are useful for the identification of antibiotics, preferably antifungals.
摘要:
The present invention provides a method for measuring diacylglycerol acetyltransferase (DGAT) activity which utilizes a novel solvent system to reduce and/or eliminate the activities of related compounds. The present invention also discloses a method for determining whether a compound is useful for modulating DGAT biological activity. The method is capable of being utilized for mass screening of compounds as modulators of the biological activity of DGAT.
摘要:
A two reagent-type kit for assaying GPT by acting GPT on L-alanine and null-ketoglutarate in the presence of pyridoxal phosphate, converting the resulting pyruvate into lactate with L-lactate dehydrogenase (LDH) in the presence of reduced nicotinamide adenine dinucleotide (NADH) and measuring GPT based on a decrement of NADH, the GPT assay kit comprising a first reagent and a second reagent, one of which contains pyridoxal phosphate, L-alanine, null-ketoglutarate, LDH and NADH and the other reagent contains no pyridoxal phosphate but contains L-alanine. The GPT assay kit is stable over a long period of time.