摘要:
PROBLEM TO BE SOLVED: To provide a dry analysis element for measuring pancreatic lipase which is high in selectivity with respect to pancreatic lipase and improves correlation of many specimens. SOLUTION: This dry analysis element for measuring the pancreatic lipase in a body fluid, having at least one developed layer and/or reagent layer which contains a diglyceride or a triglyceride of a 12C to 22C-long chain alkyl fatty acid, a monoglyceride lipase, and a glycerol-measuring reagent is such that the developed layer and/or reagent layer contain two or more anionic surfactants, and at least one of the anionic surfactants is an alkylphenylsulfonate. COPYRIGHT: (C)2009,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a method for stabilizing glycerophosphate oxidase and to obtain its composition. SOLUTION: The method for stabilizing the glycerophosphate oxidase is characterized by making the glycerophosphate oxidase coexist with piperazine-1,4-bis(2-ethanesulfonic acid) or its salt. COPYRIGHT: (C)2003,JPO
摘要:
PROBLEM TO BE SOLVED: To provide a new catalase stabilizer, to provide an ingredient-assaying reagent containing the stabilizer, and to provide a method for stabilizing catalase using the reagent. SOLUTION: This catalase stabilizer comprises a compound of the general formula [1] (wherein, nR are each independently H, a lower alkyl, lower alkoxy or halogen atom; R is H, a lower alkyl or lower alkoxy; R is an alkylene; M is H, an alkali metal, alkaline earth metal or ammonium ion; and n is an integer of 1-5).
摘要:
PROBLEM TO BE SOLVED: To provide a method for assaying a substance designed to mitigate the influence of the other components coexisting therewith in a specimen, thus useful in clinical diagnoses, and to provide a reagent for the above method. SOLUTION: This method for assaying a substance is characterized by comprising the following practice: the substance in a specimen is brought into a stoichiometric quantity of hydrogen peroxide by making use of an enzymatic reaction, the hydrogen peroxide is then reacted with a chromogen in the presence of a peroxidase and also a compound of the general formula (I) [R1 and R2 are each H or a (substituted) lower alkyl; R3 is H or joined with R1 to form NH-(CH2)n as R3-R1 (wherein, n is an integer of 2-4); R4 is a single bond or alkylene; R5 is O- or R6-X-(R6 is an optionally substituted alkylene; X is COO, SO2O or OPO2O); Y is R7-NH (R7 is an optionally 1-3 hydroxy-substituted cholanoyl group)], and a colorimetric determination is made by measuring the absorption in the visible region of the resulting colored reaction liquid by the use of an automatic analyzer.
摘要:
PROBLEM TO BE SOLVED: To accurately measure ADP by previously deleting the ADP present in a test solution or the ADP present in a reaction liquid or formed by the reaction, allowing ADP-depending hexokinase to act on the deleted test solution, and measuring the product amount. SOLUTION: This method for measuring one of an enzyme forming ADP in a test solution or a substrate thereof by using an enzymatic reaction comprises a step for previously deleting the ADP present in a test solution or the ADP present in the first reaction liquid or formed by the first reaction by using pyruvic acid kinase or creatine kinase in the presence of magnesium ion and substrate for the ADP, a step for allowing ADP-depending hexokinase catalyzing a reaction of the formula to act on the ADP formed by the second reaction, and a step for measuring the amount of the produced glucose-6- phosphate or AMP to readily measure the objective ADP in high accuracy.