Patents by Inventor Randall W. Yatscoff

Randall W. Yatscoff 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: 6709873
    Abstract: This invention relates to the production of polyclonal and monoclonal antibodies to specific sites of rapamycin (Sirolimus). The reactivity of these poly and monoclonal antibodies make them particularly useful for immunoassays for therapeutic drug monitoring (TDM). These immunoassays or TDM kits may include polyclonal or monoclonal antibodies to specific sites of rapamycin. These kits may also include various combinations of polyclonal antibodies, polyclonal and monoclonal antibodies or a panel of monoclonal antibodies. Rapamycin conjugate immunogens are prepared for the immunization of a host animal to produce antibodies directed against specific regions of the rapamycin molecule. By determining the specific binding region of particular antibody, immunoassays which are capable of distinguishing between the parent molecule, active metabolites, inactive metabolites and other structurally similar immunosuppressant compounds are developed.
    Type: Grant
    Filed: August 15, 2000
    Date of Patent: March 23, 2004
    Assignee: Isodiagnostika Inc.
    Inventors: Randall W. Yatscoff, Andrew J. Malcolm, Selvaraj Naicker
  • Patent number: 6710053
    Abstract: The synthesis of deuterated analogues of rapamycin is disclosed together with a method for use for inducing immunosupression and in the treatment of transplantation rejection, graft vs host disease, autoimmune diseases, diseases of inflammation leukemia/lymphoma, solid tumors, fungal infections, hyperproliferative vascular disorders. Also described is a method for the synthesis of water soluble deuteratred rapamycin compounds and their use as described above.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: March 23, 2004
    Assignee: Isotechnika International Inc.
    Inventors: Selvaraj Naicker, Randall W. Yatscoff, Robert T. Foster
  • Publication number: 20040038412
    Abstract: Use of 13C glucose in an analytical assay to monitor glucose metabolism by measurement of labeled exhaled CO2 is provided. A breath test and kit for performing the breath test are described for the diagnosis of diabetic indications and monitoring of glycemic control. The breath test utilizes the measurement of expired 13C-labeled CO2 following the ingestion of a 13C-enriched glucose source.
    Type: Application
    Filed: May 16, 2003
    Publication date: February 26, 2004
    Applicant: Isotechnika Inc.
    Inventors: Randall W. Yatscoff, Robert T. Foster, Launa J. Aspeslet, Richard Lewanczuk
  • Patent number: 6686454
    Abstract: This invention relates to the production of polyclonal and monoclonal antibodies to specific regions of cyclosporine (CSA) and/or CSA metabolites/derivatives. The reactivity of these polyclonal and monoclonal antibodies make them particularly useful for immunoassays for therapeutic drug monitoring (TDM). These immunoassays or TDM kits may include polyclonal or monoclonal antibodies to specific sites of CSA and/or CSA metabolites. These kits may also include various combinations of polyclonal antibodies, polyclonal and monoclonal antibodies or a panel of monoclonal antibodies. Cyclosporine or CSA metabolite conjugate immunogens are prepared for the immunization of a host animal to produce antibodies directed against specific regions of the CSA or CSA metabolite molecule.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: February 3, 2004
    Assignee: Isotechnika, Inc.
    Inventors: Randall W. Yatscoff, Andrew J. Malcolm, S. Selvaraj Naicker
  • Publication number: 20030220234
    Abstract: Cyclosporine derivatives are disclosed which possess enhanced efficacy and reduced toxicity over naturally occurring and other presently known cyclosporins and cyclosporine derivatives. The cyclosporine derivatives of the present invention are produced by chemical and isotopic substitution of the cyclosporine A (CsA) molecule by: (1) Chemical substitution and optionally deuterium substitution of amino acid 1; and (2) deuterium substitution at key sites of metabolism of the cyclosporine A molecule such as amino acids 1, 4, 9. Also disclosed are methods of producing the cyclosporine derivatives and method of producing immunosuppression with reduced toxicity with the disclosed cyclosporine derivatives.
    Type: Application
    Filed: December 16, 2002
    Publication date: November 27, 2003
    Inventors: Selvaraj Naicker, Randall W. Yatscoff, Robert T. Foster
  • Publication number: 20030212249
    Abstract: The invention is directed to isomeric mixtures of cyclosporine analogues that are structurally similar to cyclosporine A. The mixtures possess enhanced efficacy and reduced toxicity over the individual isomers and over naturally occurring and other presently known cyclosporines and cyclosporine derivatives. Embodiments of the present invention are directed toward cis and trans-isomers of cyclosporin A analogs referred to as ISATX247, and derivatives thereof. ISATX247 isomers and alkylated, arylated, and deuterated derivatives are synthesized by stereoselective pathways where the particular conditions of a reaction determine the degree of stereoselectivity. Stereoselective pathways may utilize a Wittig reaction, or an organometallic reagent comprising inorganic elements such as boron, silicon, titanium, and lithium. The ratio of isomers in a mixture may range from about 10 to 90 percent by weight of the (E)-isomer to about 90 to 10 percent by weight of the (Z)-isomer, based on the total weight of the mixture.
    Type: Application
    Filed: October 17, 2002
    Publication date: November 13, 2003
    Applicant: Isotechnika, Inc.
    Inventors: Selvaraj A. Naicker, Randall W. Yatscoff, Robert T. Foster, Mark Abel, Seetharaman Jayaraman, Hans-Jurgen Mair, Jean-Michel Adam, Bruno Lohri
  • Publication number: 20030187015
    Abstract: A series of activated iodo-benzamide derivatives are described as antineoplastic and antiviral drug compounds. The compounds generally possess a chelating group, a thiol trapping group and an activating group. The presumptive mechanism of action in preventing cancer cell and virus replication is through inhibition of the binding of transcription factors to zinc finger binding domains. The compounds are effective in inhibiting growth of a variety of human and animal tumor and leukemia cell lines at low concentrations.
    Type: Application
    Filed: November 25, 2002
    Publication date: October 2, 2003
    Inventors: Randall W. Yatscoff, Robert T. Foster, Selvaraj Naicker
  • Publication number: 20030171264
    Abstract: The present invention relates to formulations containing cyclosporin analogs that are structurally similar to cyclosporin A, in particular isomeric mixtures of cyclosporin analogs that are structurally similar to cyclosporin A. The formulations form stable microemulsion preconcentrates and may provide superior drug bioavailability and/or may reduce one or more adverse effects associated with the administration of cyclosporin. Also disclosed are methods for using and preparing the formulations.
    Type: Application
    Filed: October 17, 2002
    Publication date: September 11, 2003
    Applicant: Isotechnika, Inc.
    Inventors: Selvaraj A. Naicker, Randall W. Yatscoff, Robert T. Foster
  • Patent number: 6613739
    Abstract: Cyclosporine derivatives are disclosed which possess enhanced efficacy and reduced toxicity over naturally occurring and other presently known cyclosporins and cyclosporine derivatives. The cyclosporine derivatives of the present invention are produced by chemical and isotopic substitution of the cyclosporine A (CsA) molecule by: (1) Chemical substitution and optionally deuterium substitution of amino acid 1; and (2) deuterium substitution at key sites of metabolism of the cyclosporine A molecule such as amino acids 1, 4, 9. Also disclosed are methods of producing the cyclosporine derivatives and method of producing immunosuppression with reduced toxicity with the disclosed cyclosporine derivatives.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: September 2, 2003
    Assignee: Isotechnika, Inc.
    Inventors: Selvaraj Naicker, Randall W. Yatscoff, Robert T. Foster
  • Patent number: 6605593
    Abstract: Cyclosporine derivatives are disclosed which possess enhanced efficacy and reduced toxicity over naturally occurring and other presently known cyclosporins and cyclosporine derivatives. The cyclosporine derivatives of the present invention are produced by chemical and isotopic substitution of the cyclosporine A (CsA) molecule by: (1) Chemical substitution and optionally deuterium substitution of amino acid 1; and (2) deuterium substitution at key sites of metabolism of the cyclosporine A molecule such as amino acids 1, 4, 9. Also disclosed are methods of producing the cyclosporine derivatives and method of producing immunosuppression with reduced toxicity with the disclosed cyclosporine derivatives.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: August 12, 2003
    Assignee: Isotechnika, Inc.
    Inventors: Salvaraj Naicker, Randall W. Yatscoff, Robert T. Foster
  • Patent number: 6602715
    Abstract: A breath test and kit for performing the breath test are described for the diagnosis of diabetic indications and monitoring of glycemic control. The breath test utilizes the measurement of expired 13C-labeled CO2 following the ingestion of a 13C-enriched glucose source.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: August 5, 2003
    Assignee: Isotechnika Inc.
    Inventors: Randall W. Yatscoff, Robert T. Foster, Launa J. Aspeslet, Richard Lewanczuk
  • Patent number: 6599750
    Abstract: Use of 13C glucose in an analytical assay to monitor glucose metabolism by measurement of labeled exhaled CO2 is provided. A breath test and kit for performing the breath test are described for the diagnosis of diabetic indications and monitoring of glycemic control. The breath test utilizes the measurement of expired 13C-labeled CO2 following the ingestion of a 13C-enriched glucose source.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: July 29, 2003
    Assignee: Isotechnika Inc.
    Inventors: Randall W. Yatscoff, Robert T. Foster, Launa J. Aspeslet, Richard Lewanczuk
  • Publication number: 20030139326
    Abstract: The invention is directed to isomeric mixtures of cyclosporine analogues that are structurally similar to cyclosporine A. The mixtures possess enhanced efficacy and reduced toxicity over the individual isomers and over naturally occurring and other presently known cyclosporines and cyclosporine derivatives. Embodiments of the present invention are directed toward cis and trans-isomers of cyclosporin A analogs referred to as ISATX247, and derivatives thereof. Mixtures of ISATX247 isomers exhibit a combination of enhanced potency and reduced toxicity over the naturally occurring and presently known cyclosporins. ISATX247 isomers and alkylated, arylated, and deuterated derivatives are synthesized by stereoselective pathways where the particular conditions of a reaction determine the degree of stereoselectivity. The ratio of isomers in a mixture may range from about 10 to 90 percent by weight of the (E)-isomer to about 90 to 10 percent by weight of the (Z)-isomer, based on the total weight of the mixture.
    Type: Application
    Filed: October 17, 2002
    Publication date: July 24, 2003
    Applicant: Isotechnika, Inc.
    Inventors: Selvaraj Naicker, Randall W. Yatscoff, Robert T. Foster
  • Publication number: 20030139440
    Abstract: The synthesis of deuterated analogues of rapamycin is disclosed together with a method for use for inducing immunosupression and in the treatment of transplantation rejection, graft vs host disease, autoimmune diseases, diseases of inflammation leukemia/lymphoma, solid tumors, fungal infections, hyperproliferative vascular disorders. Also described is a method for the synthesis of water soluble deuteratred rapamycin compounds and their use as described above.
    Type: Application
    Filed: November 20, 2002
    Publication date: July 24, 2003
    Inventors: Selvaraj Naicker, Randall W. Yatscoff, Robert T. Foster
  • Publication number: 20030130206
    Abstract: Deuterated rapaymcin can be controllably introduced target locations within the patient's body by using an implantable medical device having a structure incorporated with a therapeutic agent comprising a deuterated rapamycin. Representative deuterated rapamycins include epi-7-deuteromthyl rapamycin, 7,43-d6 rapamycin, 7-deuteromethyl rapamycin and 31,42-d2-rapamycin and isomers thereof, and mixtures thereof. The deuterated rapamycin can also be glycosylated.
    Type: Application
    Filed: November 20, 2002
    Publication date: July 10, 2003
    Inventors: Joseph Koziak, Selvaraj Naicker, Randall W. Yatscoff, Robert T. Foster
  • Publication number: 20030049853
    Abstract: Use of 13C glucose in an analytical assay to monitor glucose metabolism by measurement of labeled exhaled CO2 is provided. A breath test and kit for performing the breath test are described for the diagnosis of diabetic indications and monitoring of glycemic control. The breath test utilizes the measurement of expired 13C-labeled CO2 following the ingestion of a 13C-enriched glucose source.
    Type: Application
    Filed: August 27, 2002
    Publication date: March 13, 2003
    Inventors: Randall W. Yatscoff, Robert T. Foster, Launa J. Aspeslet, Richard Lewanczuk
  • Publication number: 20030044993
    Abstract: A breath test and kit for performing the breath test are described for the diagnosis of diabetic indications and monitoring of glycemic control. The breath test utilizes the measurement of expired 13C-labeled CO2 following the ingestion of a 13C-enriched glucose source.
    Type: Application
    Filed: August 27, 2002
    Publication date: March 6, 2003
    Inventors: Randall W. Yatscoff, Robert T. Foster, Launa J. Aspeslet, Richard Lewanczuk
  • Patent number: 6511988
    Abstract: A series of activated iodo-benzamide derivatives are described as antineoplastic and antiviral drug compounds. The compounds generally possess a chelating group, a thiol trapping group and an activating group. The presumptive mechanism of action in preventing cancer cell and virus replication is through inhibition of the binding of transcription factors to zinc finger binding domains. The compounds are effective in inhibiting growth of a variety of human and animal tumor and leukemia cell lines at low concentrations.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: January 28, 2003
    Assignee: Isotechnika Inc.
    Inventors: Randall W. Yatscoff, Robert T. Foster, Selvaraj Naicker
  • Patent number: 6503921
    Abstract: The synthesis of deuterated analogues of rapamycin is disclosed together with a method for use for inducing immunosupression and in the treatment of transplantation rejection, graft vs host disease, autoimmune diseases, diseases of inflammation leukemia/lymphoma, solid tumors, fungal infections, hyperproliferative vascular disorders. Also described is a method for the synthesis of water soluble deuteratred rapamycin compounds and their use as described above.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: January 7, 2003
    Assignee: Isotechnika, Inc.
    Inventors: Selvaraj Naicker, Randall W. Yatscoff, Robert T. Foster
  • Patent number: 6468802
    Abstract: A breath test and kit for performing the breath test are described for the diagnosis of diabetic indications and monitoring of glycemic control. The breath test utilizes the measurement of expired 13C-labeled CO2 following the ingestion of a 13C-enriched glucose source.
    Type: Grant
    Filed: February 8, 2001
    Date of Patent: October 22, 2002
    Assignee: Isotechnika, Inc.
    Inventors: Randall W. Yatscoff, Robert T. Foster, Launa J. Aspeslet, Richard Lewanczuk