Patents by Inventor Jan Roeland Occo Hanemaaijer

Jan Roeland Occo Hanemaaijer 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).

  • Patent number: 8012709
    Abstract: The present invention relates to a method for determining if a subject having Type II diabetes has a kidney disorder by measuring the level of matrix metalloproteinase 8 (MMP-8) in the urine of a subject having Type II diabetes and comparing this level to a reference sample or a sample from a healthy subject and determining if the subject has a kidney disorder base on the presence of increased levels of MMP-8 in the urine compared to the reference values or reference sample.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: September 6, 2011
    Assignees: Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek, Leids Universitair Medisch Centrum
    Inventors: Johan Hendrikus Verheijen, Jan Roeland Occo Hanemaaijer, Michaela Diamant
  • Patent number: 7811771
    Abstract: This invention relates to the field of determining, assaying or quantifying activity of components of the complement system. More particularly, the invention relates to methods for detecting the presence or level of activity in a sample of mannan-binding-lectin associated serine proteases (MASPs) or complexes of such proteases with lectins and to detection of the particular lectins themselves. Provided is a method for determining the activity of a MASP in a sample, comprising incubating the sample with a pro-urokinase comprising at its activation site the consensus sequence Arg/Leu/Gly-Yyy-Arg/Lys-Ile/Leu/Val-Zzz-Gly-Gly cleavable by a MASP, wherein Yyy can be any amino acid and Zzz is preferably an aliphatic amino acid, and determining proteolytic activation of said pro-urokinase.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: October 12, 2010
    Assignee: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO
    Inventors: Johan Hendrikus Verheijen, Jan Roeland Occo Hanemaaijer, Natascha Alexandra Van Lent, Johannes Hendrikus Nicolaas Lindeman, Mohamed Rahoef Daha, Johanna Roos
  • Publication number: 20090117604
    Abstract: The present invention relates to a method for determining whether a urine sample has been obtained from a subject suffering from a kidney disorder involving kidney damage. The method is based on determining the level of a proteolytic enzyme in urine from the subject sample and optionally comparing this level with a reference value. The proteolytic enzyme preferably is a matrix metalloproteases, in particular MMP-2 or MMP-9. The method is particularly suitable for subjects with a condition or disorder that is associated with an increased risk of kidney disorders, such as diabetes. The method may advantageously be applied for early detection of kidney damage, in particular when the subject does not yet show any sign of microalbuminuria. The method may also be applied to a subject undergoing dialysis for determining whether the subject is suffering from remodelling of the peritoneal membrane. Thus, the method is particularly suited for patients undergoing continuous ambulatory peritoneal dialysis.
    Type: Application
    Filed: December 22, 2008
    Publication date: May 7, 2009
    Inventors: Johan Hendrikus VERHEIJEN, Jan Roeland Occo HANEMAAIJER, Michaela DIAMANT
  • Patent number: 7482135
    Abstract: A method for determining whether a urine sample has been obtained from a subject suffering from a kidney disorder involving kidney damage. The method is based on determining the level of a proteolytic enzyme in urine from the subject. Sample and optionally comparing this level with a reference value. The proteolytic enzyme preferably is a matrix metalloproteases, in particular MMP-2 or MMP-9. The method is particularly suitable for subjects with a condition or disorder that is associated with an increased risk of kidney disorders, such as diabetes. The method may adavnatageously be applied for early detection of kidney damage, in particular when the subject does not yet show any sign of microalbuminuria. The method may also be applied to a subject undergoing dialysis for determining whether the subject is suffering from remodelling of the peritoneal membrane. Thus, the method is particularly suited for patients undergoing continuous ambulatory peritoneal dialysis.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: January 27, 2009
    Assignees: Nederlandse Organisatie Voor Toegepast, Natuurwetenschappelijk Onderzoek Tno Leids Universitair Medisch Centrum
    Inventors: Johan Hendrikus Verheijen, Jan Roeland Occo Hanemaaijer, Michaela Diamant
  • Publication number: 20080286803
    Abstract: This invention relates to the field of determining, assaying or quantifying activity of components of the complement system. More particularly, the invention relates to methods for detecting the presence or level of activity in a sample of mannan-binding-lectin associated serine proteases (MASPs) or complexes of such proteases with lectins and to detection of the particular lectins themselves. Provided is a method for determining the activity of a MASP in a sample, comprising incubating the sample with a pro-urokinase comprising at its activation site the consensus sequence Arg/Leu/Gly-Yyy-Arg/Lys-Ile/Leu/Val-Zzz-Gly-Gly cleavable by a MASP, wherein Yyy can be any amino acid and Zzz is preferably an aliphatic amino acid, and determining proteolytic activation of said pro-urokinase.
    Type: Application
    Filed: December 19, 2005
    Publication date: November 20, 2008
    Inventors: Johan Hendrikus Verheijen, Jan Roeland Occo Hanemaaijer, Natascha Alexandra Van Lent, Johannes Hendrikus Nicolaas Lindeman, Mohamed Rahoef Daha, Johanna Roos
  • Publication number: 20080187945
    Abstract: The present invention provides an improved protease assay in which the proteases are detected on basis of their capability to cleave a modified pro-caspase which will yield an activated caspase which can then further be detected. Also part of the invention are the modified pro-caspases and kits comprising said modified pro-caspases.
    Type: Application
    Filed: February 29, 2008
    Publication date: August 7, 2008
    Applicant: Nederlandse Organisatie voor toegepast - natuurwetenschappelijk Onderzoek TNO
    Inventors: Johan Hendrikus Verheijen, Jan Roeland Occo Hanemaaijer
  • Patent number: 7361485
    Abstract: The present invention provides an improved protease assay in which the proteases are detected on basis of their capability to cleave a modified pro-caspase which will yield an activated caspase which can then further be detected. Also part of the invention are the modified pro-caspases and kits comprising said modified pro-caspases.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: April 22, 2008
    Assignee: Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno
    Inventors: Johan Hendrikus Verheijen, Jan Roeland Occo Hanemaaijer
  • Publication number: 20040101924
    Abstract: The present invention relates to a method for determining whether a urine sample has been obtained from a subject suffering from a kidney disorder involving kidney damage. The method is based on determining the level of a proteolytic enzyme in urine from the subject sample and optionally comparing this level with a reference value. The proteolytic enzyme preferably is a matrix metalloprotease, in particular MMP-2 or MMP-9. The method is particularly suitable for subjects with a condition or disorder that is associated with an increased risk of kidney disorders, such as diabetes. The method may advantageously be applied for early detection of kidney damage, in particular when the subject does not yet show any sign of microalbuminuria. The method may also be applied to a subject undergoing dialysis for determining whether the subject is suffering from remodelling of the peritoneal membrane. Thus, the method is particularly suited for patients undergoing continuous ambulatory peritoneal dialysis.
    Type: Application
    Filed: July 15, 2003
    Publication date: May 27, 2004
    Inventors: Johann Hendrikus Verheijen, Jan Roeland Occo Hanemaaijer, Michaela Diamant