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    • 4. 再颁专利
    • Method of selectively determining glycated hemoglobin
    • 选择性测定糖化血红蛋白的方法
    • USRE46130E1
    • 2016-08-30
    • US14329019
    • 2014-07-11
    • ARKRAY, Inc.
    • Satoshi Yonehara
    • C12Q1/54C12Q1/26G01N33/72C12Q1/37
    • C12Q1/26C12Q1/37G01N33/723G01N33/725
    • A method of determining glycated hemoglobin is provided, by which a ratio of the glycated hemoglobin in a sample can be determined accurately and easily. The ratio of glycated hemoglobin can be determined by degrading a glycated hemoglobin in a whole blood sample selectively with a protease to give a glycated hemoglobin degradation product; causing a redox reaction between a glycation site of the glycated hemoglobin degradation product and a fructosyl amino acid oxidoreductase; and determining this redox reaction. Further, as shown in FIG. 1, in a whole blood sample, there is a correlation between the ratio of the glycated hemoglobin determined by this method and an HbA1c concentration. Thus, without determining the glycated α-amino group as a characteristic structure of HbA1c, an amount of HbA1c can be determined accurately and easily from the determined ratio of the glycated hemoglobin.
    • 提供了测定糖化血红蛋白的方法,通过该方法可以准确且容易地测定样品中糖化血红蛋白的比例。 糖化血红蛋白的比例可以通过用蛋白酶选择性降解全血样品中的糖化血红蛋白来得到糖化血红蛋白降解产物; 引起糖化血红蛋白降解产物的糖化位点与果糖基氨基酸氧化还原酶之间的氧化还原反应; 并确定这种氧化还原反应。 此外,如图1所示。 如图1所示,在全血样品中,通过该方法测定的糖化血红蛋白的比例与HbA1c浓度存在相关性。 因此,在不确定糖化α-氨基作为HbA1c的特征结构的情况下,可以从确定的糖化血红蛋白的比例准确,容易地测定HbA1c的量。
    • 5. 再颁专利
    • Method of pre-treating sample for measuring saccharified amine and method of measuring saccharified amine
    • 预处理用于测定糖化胺的样品的方法和测定糖化胺的方法
    • USRE45626E1
    • 2015-07-28
    • US14326697
    • 2014-07-09
    • ARKRAY, Inc.
    • Satoshi YoneharaTsuguki Komori
    • C12Q1/26C12Q1/37G01N33/68G01N33/00C12N9/06C12N9/52G01N33/72
    • C12Q1/26C12N9/52C12Q1/37G01N33/68G01N33/723G01N2333/906
    • The present invention provides a method of pretreating a sample containing a glycated amine as an analyte, thereby enabling highly reliable measurement of a glycated amine. A glycated amino acid in the sample is degraded by causing a fructosyl amino acid oxidase (FAOD) to act thereon, and thereafter, a FAOD further is caused to act on the glycated amine as the analyte in the sample to cause a redox reaction. The amount of the glycated amine is determined by measuring the redox reaction. The substrate specificity of the FAOD caused to act on the glycated amino acid may be either the same as or different from that of the FAOD caused to act on the glycated amine. When using the same FAOD, a FAOD is caused to act on the glycated amino acid to degrade it, and thereafter, the sample is treated with a protease to inactivate the FAOD and also to degrade the glycated amine. Then, the same FAOD further is added so that the FAOD acts on the degradation product obtained to cause a redox reaction, and the redox reaction is measured.
    • 本发明提供一种预处理含有糖化胺作为分析物的样品的方法,由此能够高度可靠地测量糖化胺。 通过使果糖基氨基酸氧化酶(FAOD)在其上作用,使样品中的糖化氨基酸降解,此后,进一步使FAOD作为样品中的分析物作用于糖化胺以引起氧化还原反应。 通过测量氧化还原反应来测定糖化胺的量。 引起作用于糖化氨基酸的FAOD的底物特异性可以与引起作用于糖基化胺的FAOD的底物特异性相同或不同。 当使用相同的FAOD时,使FAOD作用于糖化氨基酸以使其降解,然后用蛋白酶处理样品以使FAOD失活并降解糖化胺。 然后,加入相同的FAOD,使得FAOD作用于所得到的降解产物以引起氧化还原反应,并测量氧化还原反应。