摘要:
An aqueous solution containing a tetrazolium compound used for determining superoxide ions can be stabilized by adding ß-cyclodextrin and/or a derivative thereof and/or γ-cyctodextrin.
摘要:
There is provided a method for measuring the amount of objective constituent for the measurement contained in the specific lipoprotein in a living sample such as serum and plasma, specifically for measuring the amount of cholesterol contained in high density lipoprotein, which can be applicable to clinical tests. The present invention also provides a kit for measuring the amount of the objective constituent contained in the specific lipoprotein, which comprises (i) a reagent composition containing an antibody reactive to lipoprotein(s) other than the specific lipoprotein, and a buffering agent; and (ii) a reagent composition containing a reagent for measuring the amount of the objective constituent contained in a lipoprotein and a buffering agent.
摘要:
Superoxide dismutase activity is determined by measuring hydrogen peroxide produced by using superoxide anion as a substrate and acting superoxide dismutase thereon in the presence of an electron carrier. When maleimide or a derivative thereof, and if necessary, a carbonyl compound, and if further necessary bromine ions and/or citric acid or a salt thereof are added to the electron carrier, the sensitivity and the linearity of calibration curves are further improved.
摘要:
Superoxide dismutase activity is determined by measuring hydrogen peroxide produced by using superoxide anion as a substrate and acting superoxide dismutase thereon in the presence of an electron carrier. When maleimide or a derivative thereof, and if necessary, a carbonyl compound, and if further necessary bromine ions and/or citric acid or a salt thereof are added to the electron carrier, the sensitivity and the linearity of calibration curves are further improved.
摘要:
A substrate or an enzymatic activity in a body fluid can be measured accurately without influences of interfering substances such as bilirubin by reacting an oxidase corresponding to an analyte with the analyte or an oxidase corresponding to a substance produced by enzymatic reaction with the substance in a measuring system containing one or more cationic and/or amphoteric surfactants, followed by optical measurement of hydrogen peroxide produced by the reaction.
摘要:
In a process for measuring the activity of a dehydrogenase or the amount of substrate reacted in the presence of the dehydrogenase using NAD or NADP as coenzyme and a tetrazorium salt as a color-producing reagent, when at least one member selected from the group consisting of dodecyl sulfate, decyl sulfate, dodecylbenzenesulfonic acid, and salts thereof is used, deposition and staining of a formazan compound produced can be prevented and improvement in color-producing stability and enhancement of coloring can be attained.
摘要:
The present invention is to provide a method for measuring an amount of cholesterol in low density lipoproteins (LDL-cholesterol) in a sample specifically at high accuracy and a reagent used in this method, and the present invention can attain such effect that direct measuring an amount of LDL-cholesterol by widely used automatic analyzers can be conducted by using the invention, which has not been possible after known methods.