Patents by Inventor Maria KIRIYAMA

Maria KIRIYAMA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240118272
    Abstract: Disclosed is a method for measuring an activity of alkaline phosphatase contained in an extracellular vesicle in a sample, including acquiring an activity value of alkaline phosphatase contained in an extracellular vesicle in a sample using a calibrator, in which the calibrator contains a conjugate in which a polypeptide having alkaline phosphatase activity and a polypeptide including an amino acid sequence of a membrane protein present on a surface of the extracellular vesicle are covalently bound.
    Type: Application
    Filed: September 18, 2023
    Publication date: April 11, 2024
    Applicant: SYSMEX CORPORATION
    Inventors: Eiya TAMADA, Masatoshi Yanagida, Kazuto Yamashita, Elnaz Nakhael, Mami Onishi, Maria Kiriyama
  • Publication number: 20230296634
    Abstract: Disclosed is a method for measuring sterol in lipoprotein, comprising: forming a complex by contacting lipoprotein in a sample, a tagged sterol, and a first capture body that specifically binds to the tag and has a labeling substance with each other, the complex comprising the lipoprotein comprising the tagged sterol and the first capture body; and detecting a signal generated by the labeling substance comprised in the complex, wherein in the tagged sterol, the tag is added to C3 position of a sterol skeleton.
    Type: Application
    Filed: March 14, 2023
    Publication date: September 21, 2023
    Applicant: SYSMEX CORPORATION
    Inventors: Takuya KUBO, Youichi NISHIKAWA, Shinnosuke UNO, Amane HARADA, Katsuhiro MURAKAMI, Jeeeun KIM, Maria KIRIYAMA, Keiko MIWA
  • Patent number: 11486875
    Abstract: The present invention relates to a method for measuring the cholesterol uptake capacity of lipoproteins. The present invention also relates to a reagent kit for measuring the cholesterol uptake capacity of lipoproteins. The present invention further relates to a tagged cholesterol which can be used in the method and the reagent kit.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: November 1, 2022
    Assignee: SYSMEX CORPORATION
    Inventors: Keiko Yoshikawa, Amane Harada, Katsuhiro Murakami, Maria Kiriyama, Keiko Miwa, Takuya Kubo
  • Publication number: 20220308057
    Abstract: Disclosed is a method of determining onset risk of cardiovascular disease in a subject, the method comprising: capturing, on a solid phase, an extracellular vesicle derived from a blood sample collected from the subject; and measuring alkaline phosphatase activity of the extracellular vesicle, a measured result of the alkaline phosphatase activity being directed for use as an index of the onset risk of cardiovascular disease in the subject.
    Type: Application
    Filed: February 18, 2022
    Publication date: September 29, 2022
    Applicant: SYSMEX CORPORATION
    Inventors: Maria KIRIYAMA, Eiya TAMADA, Elnaz NAKHAEI, Mami ONISHI
  • Publication number: 20210018521
    Abstract: The present invention addresses the problem of providing a method and a reagent for measuring the uptake capacity of a lipoprotein with higher accuracy. This problem is solved by preparing a lipoprotein incorporating a labeled sterol, by mixing the lipoprotein in a sample and the labeled sterol in the presence of a surfactant having no cyclic structure, and measuring the uptake capacity of the labeled sterol of the lipoprotein.
    Type: Application
    Filed: September 24, 2020
    Publication date: January 21, 2021
    Applicant: SYSMEX CORPORATION
    Inventors: Amane HARADA, Takuya IINO, Takuya KUBO, Katsuhiro MURAKAMI, Naoya SAIKI, Xiaoling PENG, Maria KIRIYAMA
  • Publication number: 20210003562
    Abstract: The present invention relates to a method for measuring the cholesterol uptake capacity of lipoproteins. The present invention also relates to a reagent kit for measuring the cholesterol uptake capacity of lipoproteins. The present invention further relates to a tagged cholesterol which can be used in the method and the reagent kit.
    Type: Application
    Filed: September 17, 2020
    Publication date: January 7, 2021
    Applicant: SYSMEX CORPORATION
    Inventors: Keiko YOSHIKAWA, Amane HARADA, Katsuhiro MURAKAMI, Maria KIRIYAMA, Keiko MIWA, Takuya KUBO
  • Patent number: 10809249
    Abstract: The present invention relates to a method for measuring the cholesterol uptake capacity of lipoproteins. The present invention also relates to a reagent kit for measuring the cholesterol uptake capacity of lipoproteins. The present invention further relates to a tagged cholesterol which can be used in the method and the reagent kit.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: October 20, 2020
    Assignee: SYSMEX CORPORATION
    Inventors: Keiko Yoshikawa, Amane Harada, Katsuhiro Murakami, Maria Kiriyama, Keiko Miwa, Takuya Kubo
  • Patent number: 10436806
    Abstract: Provided is a method of measuring a lipoprotein's capacity to accept cholesterol including the steps of bringing a lipoprotein in a sample into contact with labeled cholesterol to incorporate the labeled cholesterol into the lipoprotein, bringing the lipoprotein having the labeled cholesterol into contact with an antibody that binds to a lipoprotein to form a complex of the lipoprotein and the antibody, and measuring the label incorporated into the complex.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: October 8, 2019
    Assignee: SYSMEX CORPORATION
    Inventors: Amane Harada, Katsuhiro Murakami, Maria Kiriyama, Keiko Yoshikawa, Keiko Miwa
  • Publication number: 20170315112
    Abstract: The present invention relates to a method for measuring the cholesterol uptake capacity of lipoproteins. The present invention also relates to a reagent kit for measuring the cholesterol uptake capacity of lipoproteins. The present invention further relates to a tagged cholesterol which can be used in the method and the reagent kit.
    Type: Application
    Filed: July 14, 2017
    Publication date: November 2, 2017
    Applicant: SYSMEX CORPORATION
    Inventors: Keiko YOSHIKAWA, Amane HARADA, Katsuhiro MURAKAMI, Maria KIRIYAMA, Keiko MIWA, Takuya KUBO
  • Publication number: 20160109469
    Abstract: Provided is a method of measuring a lipoprotein's capacity to accept cholesterol including the steps of: bringing a lipoprotein in a sample into contact with labeled cholesterol to incorporate the labeled cholesterol into the lipoprotein; bringing the lipoprotein having the labeled cholesterol into contact with an antibody that binds to a lipoprotein to form a complex of the lipoprotein and the antibody; and measuring the label incorporated into the complex.
    Type: Application
    Filed: October 14, 2015
    Publication date: April 21, 2016
    Applicant: SYSMEX CORPORATION
    Inventors: Amane HARADA, Katsuhiro MURAKAMI, Maria KIRIYAMA, Keiko YOSHIKAWA, Keiko MIWA
  • Publication number: 20150276574
    Abstract: A cell analysis method is provided that comprises (a) removing embedding medium from a sample obtained from the tissue specimen which is aldehyde-fixed and embedded in the water-insoluble embedding medium, thereby obtaining the sample comprising the tissue from which the embedding medium is removed; (b) heating the sample obtained from step (a) in the presence of a divalent carboxylic acid compound to obtain a heat-treated sample comprising the tissue; (c) contacting the heat-treated sample from step (b) with an enzyme having a cell dispersion activity to separate the sample into individual cells, thereby obtaining the sample comprising the individual cells dispersed in a solvent; (d) subjecting the separated cells from step (c) to flow cytometry to obtain optical information; and (e) analyzing the cells based on the optical information obtained in the step (d).
    Type: Application
    Filed: March 18, 2015
    Publication date: October 1, 2015
    Inventors: Maria KIRIYAMA, Takuya KUBO