Patents Assigned to Hytest Ltd.
  • Patent number: 10191066
    Abstract: The present invention describes the method for determining the risk of future major adverse cardiovascular events, which comprises detection proteolytic fragments of IGFBP-4 or IGFBP-5 (insulin-like growth factor binding protein 4 or insulin-like growth factor binding protein 5) in patients' blood. The present invention provides antibodies and immunoas-says, suitable for specific measurement of proteolytic fragments of IGFBPs. In current invention the IGFBP fragments are suggested to be utilized as blood biomarkers for the risk prediction of major adverse cardiovascular events (MACE).
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: January 29, 2019
    Assignee: HYTEST LTD.
    Inventors: Alexey G. Katrukha, Alexander B. Postnikov, Tatiana I. Smolyanova, Alexey V. Kharitonov, Natalia N. Tamm
  • Patent number: 9964549
    Abstract: Disclosed is a method for detecting IGFBP-4 (Insulin-like Growth Factor Binding Protein-4) fragments. The method uses antibodies or antigen binding fragments that specifically recognize epitopes on IGFBP-4 fragments. The IGFBP-4 fragments include the N-terminal and C-terminal fragments resulting from PAPP-A dependent cleavage of IGFBP-4. Assay and diagnostic methods using detection of IGFBP-4 fragments are also disclosed.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: May 8, 2018
    Assignee: HYTEST LTD.
    Inventors: Alexey G. Katrukha, Alexander B. Postnikov, Tatiana I. Solovyeva, Alexey V. Kharitonov
  • Patent number: 9145459
    Abstract: The present invention relates to an immunoassay for detection of BNP, proBNP and fragments thereof. Essentially the assay comprises: a) contacting the antigen with a first antibody specific to a fragment corresponding to amino acids 11-22 of BNP, or to a part of this peptide comprising at least three amino acids of said sequence, to obtain a first order immune complex. b) contacting the first order immune complex obtained at step (a) with a second antibody recognizing said first order immune complex, to obtain a second order immune complex, wherein said antibody is unable to recognize free BNP, proBNP or free first antibody; c) Detecting the second order immune complex.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: September 29, 2015
    Assignee: HYTEST LTD.
    Inventors: Natalia N. Tamm, Alexey G. Katrukha, Vladimir L. Filatov, Olga V. Kolosova
  • Publication number: 20150219671
    Abstract: The present invention relates to a method for diagnosing a cardiovascular or cancer disease by detecting IGFBP-4 (Insulin-like Growth Factor Binding Protein-4) fragments in a patient sample. Antibodies specifically recognizing novel epitopes originated by enzyme-dependent cleavage of IGFBP-4 are also disclosed.
    Type: Application
    Filed: March 20, 2015
    Publication date: August 6, 2015
    Applicant: HYTEST LTD.
    Inventors: Alexey G. KATRUKHA, Alexander B. POSTNIKOV, Tatiana I. SOLOVYEVA, Alexey V. KHARITONOV
  • Patent number: 9034591
    Abstract: The present invention relates to an immunoassay for detection of BNP, proBNP and fragments thereof. Essentially the assay comprises: a) contacting the antigen with a first antibody specific to a fragment corresponding to amino acids 11-22 of BNP, or to a part of this peptide comprising at least three amino acids of said sequence, to obtain a first order immune complex. b) contacting the first order immune complex obtained at step (a) with a second antibody recognizing said first order immune complex, to obtain a second order immune complex, wherein said antibody is unable to recognize free BNP, proBNP or free first antibody; c) Detecting the second order immune complex.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: May 19, 2015
    Assignee: HYTEST LTD.
    Inventors: Natalia N. Tamm, Alexey G. Katrukha, Vladimir L. Filatov, Olga V. Kolosova
  • Patent number: 9034592
    Abstract: The present invention relates to an immunoassay for detection of BNP, proBNP and fragments thereof. Essentially the assay comprises: a) contacting the antigen with a first antibody specific to a fragment corresponding to amino acids 11-22 of BNP, or to a part of this peptide comprising at least three amino acids of said sequence, to obtain a first order immune complex. b) contacting the first order immune complex obtained at step (a) with a second antibody recognizing said first order immune complex, to obtain a second order immune complex, wherein said antibody is unable to recognize free BNP, proBNP or free first antibody; c) Detecting the second order immune complex.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: May 19, 2015
    Assignee: HYTEST LTD.
    Inventors: Natalia N. Tamm, Alexey G. Katrukha, Vladimir L. Filatov, Olga V. Kolosova
  • Patent number: 9012610
    Abstract: The present invention relates to a method for diagnosing a cardiovascular or cancer disease by detecting IGFBP-4 (Insulin-like Growth Factor Binding Protein-4) fragments in a patient sample. Antibodies specifically recognizing novel epitopes originated by enzyme-dependent cleavage of IGFBP-4 are also disclosed.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: April 21, 2015
    Assignee: Hytest Ltd.
    Inventors: Alexey G. Katrukha, Alexander B. Postnikov, Tatiana I. Solovyeva, Alexey V. Kharitonov
  • Publication number: 20140017714
    Abstract: The present invention describes the method for determining the risk of future major adverse cardiovascular events, which comprises detection proteolytic fragments of IGFBP-4 or IGFBP-5 (insulin-like growth factor binding protein 4 or insulin-like growth factor binding protein 5) in patients' blood. The present invention provides antibodies and immunoas-says, suitable for specific measurement of proteolytic fragments of IGFBPs. In current invention the IGFBP fragments are suggested to be utilized as blood biomarkers for the risk prediction of major adverse cardiovascular events (MACE).
    Type: Application
    Filed: April 13, 2012
    Publication date: January 16, 2014
    Applicant: HYTEST LTD.
    Inventors: Alexey G. Katrukha, Alexander B. Postnikov, Tatiana I. Smolyanova, Alexey V. Kharitonov, Natalia N. Tamm
  • Publication number: 20130071949
    Abstract: The present invention relates to an immunoassay for detection of BNP, proBNP and fragments thereof. Essentially the assay comprises: a) contacting the antigen with a first antibody specific to a fragment corresponding to amino acids 11-22 of BNP, or to a part of this peptide comprising at least three amino acids of said sequence, to obtain a first order immune complex. b) contacting the first order immune complex obtained at step (a) with a second antibody recognizing said first order immune complex, to obtain a second order immune complex, wherein said antibody is unable to recognize free BNP, proBNP or free first antibody; c) Detecting the second order immune complex.
    Type: Application
    Filed: August 31, 2012
    Publication date: March 21, 2013
    Applicant: HYTEST LTD.
    Inventors: Natalia N. TAMM, Alexey G. KATRUKHA, Vladimir L. FILATOV, Olga V. KOLOSOVA
  • Publication number: 20120178113
    Abstract: The present invention relates to a method for diagnosing a cardiovascular or cancer disease by detecting IGFBP-4 (Insulin-like Growth Factor Binding Protein-4) fragments in a patient sample. Antibodies specifically recognizing novel epitopes originated by enzyme-dependent cleavage of IGFBP-4 are also disclosed.
    Type: Application
    Filed: June 29, 2010
    Publication date: July 12, 2012
    Applicant: HYTEST LTD.
    Inventors: Alexey G. Katrukha, Alexander B. Postnikov, Tatiana I. Solovyeva, Alexey V. Kharitonov
  • Publication number: 20090163415
    Abstract: The present invention provides antibodies against glycosylated proBNP and NT-proBNP. The antibodies are suitable for precise immunodetection of both of the proteins in human blood. The glycosylated forms of proBNP and NT-proBNP may be utilized as an antigen for antibody generation as well as a calibrator or immunological standard in different types of immunoassays. The invention thus also relates to a stable standard or calibrator pro-Brain Natriuretic Peptide (proBNP) preparation for use in a method for detecting BNP immunoreactivity in a sample, the preparation comprising glycosylated proBNP or a fragment thereof. In addition, the present invention is directed to an assay for precisely detecting the NT-proBNP circulating in a patient's blood, wherein the level of glycosylation of the proBNP molecule is exploited. Therapeutic applications are also contemplated.
    Type: Application
    Filed: November 21, 2008
    Publication date: June 25, 2009
    Applicant: Hytest Ltd.
    Inventors: Alexei G. KATRUKHA, Karina R. SEFERYAN, Alexander G. SEMENOV, Natalia N. TAMM, Vladimir L. FILATOV, Alexander B. POSTNIKOV
  • Patent number: 7285418
    Abstract: The invention provides a method for assaying for troponin I in a sample such as serum, the method comprising a determination of the troponin I concentration in a sample using a standard preparation that comprises a complete native troponin complex. One exemplary assay for troponin I concentration according to the invention is an immunoassay. Further contemplated in the method is a step comprising contacting the sample with a Ca2+-binding agent. Another aspect of the invention is the standard preparation comprising a complete native troponin complex. Yet another aspect of the invention is a kit for use in the assay method comprising the standard preparation, a detectable label, and a troponin I binding partner, such as an anti-troponin I antibody. All aspects of the invention are usefully practiced using human materials, such as a human troponin complex, and/or human sources for samples.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: October 23, 2007
    Assignee: Hytest Ltd.
    Inventors: Alex G. Katrukha, Sergei Severin, Anastasia Bersenikova, Tatiana Esakova, Kim Pettersson