Patents by Inventor Bhupendra P. Doctor

Bhupendra P. Doctor 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: 20110230473
    Abstract: Disclosed herein are methods, kits and compositions for treating, preventing, inhibiting, or reducing a seizure, status epilepticus, neuropathogenesis or a neuropathology caused by overstimulation of the NMDA receptor pathway and/or exposure to an OP compound.
    Type: Application
    Filed: October 9, 2009
    Publication date: September 22, 2011
    Inventors: Richard K. Gordon, Madhusoodana P. Nambiar, James C. Demar, Ruthie H. Ratcliffe, Bhupendra P. Doctor, Roberta R. Owens
  • Patent number: 7754461
    Abstract: Disclosed herein are methods for the large-scale preparation of human butyrylcholinesterase (HuBChE) preparations from Cohn Fraction IV-4. As disclosed, the methods provide HuBChE preparations that are about 99% or more pure with recovery yields of about 60%. Also disclosed are the pharmacokinetics, safety and toxicity, stability and efficacy of the HuBChE preparations.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: July 13, 2010
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Bhupendra P. Doctor, Ashima Saxena, Wei Sun, Chunyuan Luo, Prasanthi Tipparaju, Irwin Koplovitz, David E. Lenz, Michelle C. Ross
  • Patent number: 7741431
    Abstract: A novel targeting peptide from the C-terminal of endothelin and/or a novel fusogenic peptide from hemagglutinin are optionally conjugated to the carboxy group of 1,2-dioleoyl-sn-glycero-3-succinate and incorporated into liposomes for therapeutic treatment. The novel targeting peptide directs liposomes to lung cells, and, therefore, is useful for delivering liposomes encapsulating cholinesterase genes, particularly, the human serum butyryl cholinesterase (Hu BChE) gene, as a treatment against nerve agents. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader quickly to ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the appended issued claims. 37 CFR ยง1.72(b).
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: June 22, 2010
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Nahum Allon, Carolyn Chambers, Ashima Saxena, Bhupendra P. Doctor
  • Publication number: 20090220587
    Abstract: A receptor ligand is conjugated to a lipid-soluble moiety, thereby allowing effective delivery of the peptide ligand to a target cell in the form of a liposome complex. The ligand brings the liposome in proximity to the target cell, facilitating the fusion of the liposome with an endosome of the cellular target to release the payload into the cytoplasm. The liposome itself packages drugs or other therapeutics that are delivered to the interior of the cell upon fusion of the liposome.
    Type: Application
    Filed: February 12, 2009
    Publication date: September 3, 2009
    Applicant: UNITED STATE ARMY
    Inventors: Nahum Allon, Ashima Saxena, Carolyn Chambers, Bhupendra P. Doctor
  • Patent number: 7375079
    Abstract: The compounds of the invention are generally described by the formula: B1Z*2B3Z*4X*5Q6F7X8X9X10X11, ??(1) B1X2X3X4X5Q6F7X8X9X10X11, or ??(2) B1Z2B3X4Z5Q6F7Z8X9X10X11 ??(3) and the salts, esters, amides, and acyl forms thereof. Each position represented by a letter indicates a single amino acid residue: B is a basic of polar/large amino acid or a modified form thereof; X is a small or hydrophobic amino acid or a modified form thereof; X* is a small or polar/large amino acid or a modified form thereof; Z is a polar/large or hydrophobic amino acid or a modified form thereof; Z* is Proline or a polar/large of hydrophobic amino acid or a modified form thereof. As described below, one or more of the peptide linkages between the amino acid residues may be replaced by a peptide linkage mimic. These compounds may be used as molecular building blocks to create compounds that are optimized for inhibiting the protease activity of Botulinum b and tetanus toxins.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: May 20, 2008
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Richard K. Gordon, Deborah R. Moorad, Bhupendra P. Doctor, Gregory E. Garcia
  • Patent number: 7235521
    Abstract: The compounds of the invention are generally described by the formula (1): B1Z*2B3Z*4X*5Q6F7X8X9X10X11, (2): B1X2X3X4X5Q6F7X8X9X10X11, or (3): B1X2B3X4Z5Q6F7Z8X9X10X11 and the salts, esters, amides, and acyl forms thereof. Each position represented by a letter indicates a single amino acid residue: B is a basic or polar/large amino acid or a modified form thereof; X is a small or hydrophobic amino acid or a modified form thereof; X* is a small or polar/large amino acid or a modified form thereof; Z is a polar/large or hydrophobic amino acid or a modified form thereof; Z* is Proline or a polar/large or hydrophobic amino acid or a modified form thereof. As described below, one or more of the peptide linkages between the amino acid residues may be replaced by a peptide linkage mimic. These compounds may be used as molecular building blocks to create compounds that are optimized for inhibiting the protease activity of Botulinum B and tetanus toxins.
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: June 26, 2007
    Assignee: United States of America as represented by the Secretary of the Army
    Inventors: Richard K. Gordon, Deborah R. Moorad, Bhupendra P. Doctor, Gregory E. Garcia
  • Publication number: 20040152145
    Abstract: An assay for detecting, measuring, or monitoring the activity or concentration of at least two proteins that have similar or overlapping properties is disclosed. The assay comprises first determining the sensitivity coefficients of the substrates for each of the proteins in which the concentrations are to be determined. This method may be used for detecting, measuring, or monitoring the activity and concentration of AChE, BChE, or both in a test sample which test sample may be whole and unprocessed blood or tissue. Also disclosed are methods of using the assay to detect a subject's exposure to an agent which affects cholinesterase, determine the efficacy or progress of a treatment, determine the amount of protection provided against exposure to an agent which affects cholinesterase, or both, screen a subject for having a drug sensitivity or a particular disease, detect a change in red blood cell count of a subject, determine whether a candidate compound affects cholinesterase.
    Type: Application
    Filed: January 26, 2004
    Publication date: August 5, 2004
    Inventors: Shawn R. Feaster, Richard K. Gordon, Bhupendra P. Doctor
  • Patent number: 6746850
    Abstract: An assay for detecting, measuring, or monitoring the activity or concentration of at least two proteins that have similar or overlapping properties is disclosed. The assay comprises first determining the sensitivity coefficients of the substrates for each of the proteins in which the concentrations are to be determined. This method may be used for detecting, measuring, or monitoring the activity and concentration of AChE, BChE, or both in a test sample which test sample may be whole and unprocessed blood or tissue. Also disclosed are methods of using the assay to detect a subject's exposure to an agent which affects cholinesterase, determine the efficacy or progress of a treatment, determine the amount of protection provided against exposure to an agent which affects cholinesterase, or both, screen a subject for having a drug sensitivity or a particular disease, detect a change in red blood cell count of a subject, determine whether a candidate compound affects cholinesterase.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: June 8, 2004
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Shawn R. Feaster, Richard K. Gordon, Bhupendra P. Doctor
  • Patent number: 6713444
    Abstract: The compounds of the invention are generally described by the formula: X1X2B3X4B5X*6X7X8 B9X10B11X12B13X14 B15X16B17X*18X*19B20 X21X22X23Q24F25Z*26X27 X28B29X30B31B32X33X34 B35B36X37Z38Z39  (1) and the salts, esters, amides, and acyl forms thereof. Up to 15 amino acids may be truncated from the N-terminus and up to 6 amino acids may be truncated from the C-terminus. Each position represented by a letter indicates a single amino acid residue wherein B is a basic or polar/large amino acid or a modified form thereof; X is a small or hydrophobic amino acid or a modified form thereof; X* is a small or polar/large amino acid or a modified form thereof; Z is a polar/large or hydrophobic amino acid or a modified form thereof; Z* is Proline or a polar/large or hydrophobic amino acid or a modified form thereof. These compounds may be used to inhibit the protease activity of Botulinum B and tetanus toxins.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: March 30, 2004
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Gregory E. Garcia, Richard K. Gordon, Debbie R. Moorad, Bhupendra P. Doctor
  • Publication number: 20040005681
    Abstract: A material comprising a porous support and a plurality of enzymes for the removal, decontamination or neutralization of hazardous chemicals such as OP compounds is disclosed. The material may be used on a variety of surfaces, including natural, synthetic and biological surfaces such as skin and other delicate membranes. Also disclosed is a process of making the material, kits and various methods and reactivation devices for reactivating the enzymatic activity of the material.
    Type: Application
    Filed: July 2, 2003
    Publication date: January 8, 2004
    Inventors: Richard K. Gordon, Bhupendra P. Doctor, Ashima Saxena, Shawn R. Feaster, Donald Maxwell, Michelle Ross, David Lenz, Keith LeJeune, Alan Russell
  • Patent number: 6642037
    Abstract: An enzymatically active reusable sponge or foam, capable of regeneration with oximes, made of a polymer such as polyurethane is prepared for detoxification of hazardous compounds such as organophosphorus and organosulfur compounds. The foam or sponge contains a plurality of enzymes including enzymes selected from acetylcholinesterase, butyrylcholinesterase, triesterase, pseudocholinesterase, organophosphate hydrase, phosphotriesterase, paraoxonase and organophosphorus and organosulfur hydrolyzing enzymes. The sponge or foam may additionally contain activated carbon and an enzyme reactivation compound. A kit can be formed containing the sponge or foam and the compound for enzyme reactivation. The enzymatically active foam or sponge may be prepared using a two chamber device where enzymes and prepolymer are passed from separate chambers into a static mixing stator and are subjected to low shear mixing and extrusion to form by the sponge or foam.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: November 4, 2003
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Richard K. Gordon, Bhupendra P. Doctor, Ashima Saxena, Shawn R. Feaster, Donald Maxwell, Michelle Ross, David Lenz, Keith Lejeune, Alan Russell
  • Publication number: 20030113902
    Abstract: A material comprising a porous support and a plurality of enzymes for the removal, decontamination or neutralization of hazardous chemicals such as OP compounds is disclosed. The material may be used on a variety of surfaces, including natural, synthetic and biological surfaces such as skin and other delicate membranes. Also disclosed is a process of making the material, kits and various methods and reactivation devices for reactivating the enzymatic activity of the material.
    Type: Application
    Filed: April 26, 2000
    Publication date: June 19, 2003
    Inventors: Richard K. Gordon, Bhupendra P. Doctor, Ashima Saxena, Shawn R. Feaster, Donald Maxwell, Michelle Ross, David Lenz, Keith Lejeune, Alan Russell, Gregory E. Garcia
  • Patent number: 6573244
    Abstract: The compounds of the invention are generally described by the formula: B1Z*2B3Z*4X*5Q6F7X8X9X10X11  (1), B1X2X3X4X5Q6F7X8X9X10X11  (2), or B1X2B3X4Z5Q6F7Z*8X9X10X11  (3) and the salts, esters, amides, and acyl forms thereof. Each position represented by a letter indicates a single amino acid residue: B is a basic or polar/large amino acid or a modified form thereof; X is a small or hydrophobic amino acid or a modified form thereof; X* is a small or polar/large amino acid or a modified form thereof; Z is a polar/large or hydrophobic amino acid or a modified form thereof; Z* is Proline or a polar/large or hydrophobic amino acid or a modified form thereof. As described below, one or more of the peptide linkages between the amino acid residues may be replaced by a peptide linkage mimic. These compounds may be used as molecular building blocks to create compounds that are optimized for inhibiting the protease activity of Botulinum B and tetanus toxins.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: June 3, 2003
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Richard K. Gordon, Debbie R. Moorad, Bhupendra P. Doctor, Gregory E. Garcia
  • Patent number: 6541230
    Abstract: A reusable sponge or foam made of a polymer such as polyurethane is prepared containing a plurality of different enzymes or a cross-linked complex of the plurality of enzymes for detoxification of a diverse array of hazardous chemicals such as organophosphorus and/or organosulfur compounds. The plurality of enzymes include enzymes selected from acetylcholinesterase, butyrylcholinesterase, triesterase, pseudocholinesterase, choline oxidase, peroxidase, organophosphate hydrolase, phosphotriesterase, paraoxonase and laccase. A preferred mixture of enzymes contains organophosphate hydrolase and acetylcholinesterase or butyrylcholinesterase. The sponge or foam may additionally contain carbon, an enzyme reactivation compound and/or an indicator for measuring capacity for detoxification. The indicator can be fluorescent, chemiluminescent or visible chromogen or an electrode, and be encapsulated in a liposome or crushable packet.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: April 1, 2003
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Richard K. Gordon, Bhupendra P. Doctor
  • Publication number: 20020165620
    Abstract: An assay for detecting, measuring, or monitoring the activity or concentration of at least two proteins that have similar or overlapping properties is disclosed. The assay comprises first determining the sensitivity coefficients of the substrates for each of the proteins in which the concentrations are to be determined. This method may be used for detecting, measuring, or monitoring the activity and concentration of AChE, BChE, or both in a test sample which test sample may be whole and unprocessed blood or tissue. Also disclosed are methods of using the assay to detect a subject's exposure to an agent which affects cholinesterase, determine the efficacy or progress of a treatment, determine the amount of protection provided against exposure to an agent which affects cholinesterase, or both, screen a subject for having a drug sensitivity or a particular disease, detect a change in red blood cell count of a subject, determine whether a candidate compound affects cholinesterase.
    Type: Application
    Filed: May 4, 2001
    Publication date: November 7, 2002
    Inventors: Shawn R. Feaster, Richard K. Gordon, Bhupendra P. Doctor
  • Patent number: 6406876
    Abstract: Methods, compositions and materials useful in the detection of organophosphorous and organosulfur compounds are disclosed. In particular, biosensors wherein a porous or a non-porous support having an enzyme immobilized upon or within are disclosed. The biosensors exhibit enzymatic stability at extreme temperatures and/or denaturing conditions, and similar kinetic characteristics of the soluble form of the enzymes utilized. The enzyme does not leach from the porous or non-porous support and the material retains enzymatic activity after prolonged storage. Differential biosensors are also disclosed.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: June 18, 2002
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Richard K. Gordon, Bhupendra P. Doctor, Ashima Saxena, Shawn R. Feaster, Donald Maxwell, Michelle Ross, David Lenz, Keith LeJeune, Alan Russell
  • Patent number: 5629299
    Abstract: Storage-stable aqueous solutions of hydrolytically unstable organic ionic compounds and cyclodextrins, which cyclodextrins are capable of forming hydrolytically stable inclusion complexes with the ionic compounds. Storage-stable rapidly solvated organic ionic inclusion complexes of hydrolytically unstable organic ionic compounds and cyclodextrins, which cyclodextrins are capable of forming hydrolytically stable inclusion complexes with the ionic compounds.
    Type: Grant
    Filed: August 19, 1993
    Date of Patent: May 13, 1997
    Inventors: Nesbitt D. Brown, Bhupendra P. Doctor, Joseph M. Marasco
  • Patent number: 5238927
    Abstract: Storage-stable aqueous solutions of hydrolytically unstable organic ionic compounds and cyclodextrins, which cyclodextrins are capable of forming hydrolytically stable inclusion complexes with the ionic compounds. Storage-stable rapidly solvated organic ionic inclusion complexes of hydrolytically unstable organic ionic compounds and cyclodextrins, which cyclodextrins are capable of forming hydrolytically stable inclusion complexes with the ionic compounds.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: August 24, 1993
    Inventors: Nesbitt D. Brown, Bhupendra P. Doctor, Joseph M. Marasco
  • Patent number: 5132297
    Abstract: Storage-stable aqueous solutions of hydroyltically unstable organic ionic compounds and cyclodextrins, which cyclodextrins are capable of forming hydrolytically stable inclusion complexes with the ionic compounds. Storage-stable rapidly solvated organic ionic inclusion complexes of hydrolytically unstable organic ionic compounds and cyclodextrins, which cyclodextrins are capable of forming hydrolytically stable inclusion complexes with the ionic compounds.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: July 21, 1992
    Inventors: Nesbitt D. Brown, Bhupendra P. Doctor, Joseph M. Marasco
  • Patent number: 5026897
    Abstract: Novel carbaphens are provided of the formula ##STR1## wherein R is OH, OCON(CH.sub.3).sub.2 or OCONHCH.sub.3, and R' is H, OH or sub.2 OCON(CH.sub.3).sub.2, stereoisomers thereof, pharmaceutically-acceptable salts thereof or mixtures thereof.Compositions comprise the carbaphens with pharmaceutically acceptable carriers, and they may further comprise other drugs as well.Methods of treating patients either prophylactically or therapeutically which suffer from organophosphate poisoning, coronary insufficiency, cerebral vasospasms, spastic cholitis and cholecystitis comprise the administration of the carbaphens of the invention.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: June 25, 1991
    Assignee: The United States of America, as represented by the Secretary of the Army
    Inventors: Peter K. Chiang, Haim Leader, Ruthann M. Smejkal, Richard K. Gordon, Charlotte S. Payne, Bhupendra P. Doctor, Felipe N. Padilla