Patents by Inventor J. Marc Simard

J. Marc Simard 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: 20150338393
    Abstract: A composition comprising a novel Ca2+-activated, [ATP]i-sensitive nonspecific cation (NCCa-ATP) channel is described. The channel is found in mammalian neural cells and exhibits a different sensitivity to block by various adenine nucleotides, and is activated by submicromolar [Ca]i. The NCCa-ATP channel is activated under conditions of ATP depletion, which causes severe cell depolarization, followed by cell swelling. The NCCa-ATP channel is regulated by a sulfonylurea receptor and is inhibited by sulfonylurea compounds glibenclamide and tolbutamide. Methods employing compositions comprising the NCCa-ATP channel to screen for compounds that block the channel and the use of such antagonists as therapeutics in preventing brain swelling and damage are described. In addition, methods employing compositions comprising the Kir2.3 channel to screen for compounds that open the channel and the use of such antagonists as therapeutics in preventing brain swelling and damage are described.
    Type: Application
    Filed: July 31, 2015
    Publication date: November 26, 2015
    Inventors: J. Marc Simard, Mingkui Chen
  • Publication number: 20150272964
    Abstract: The present invention is directed to therapeutic compounds, treatment methods, and kits affecting the NCCa-ATP channel of neural tissue, including neurons, glia and blood vessels within the nervous system, and methods of using same. The NCCa-ATP channel is newly expressed in neural tissue following injury such as ischemia, and is regulated by the sulfonylurea receptor SUR1, being inhibited by sulfonylurea compounds, e.g., glibenclamide and tolbutamide, and opened by diazoxide. Antagonists of the NCCa-ATP channel, including SUR1 antagonists, are useful in the prevention, diminution, and treatment of injured or diseased neural tissue, including astrocytes, neurons and capillary endothelial cells, that is due to ischemia, tissue trauma, brain swelling and increased tissue pressure, or other forms of brain or spinal cord disease or injury. Agonists of the NCCa-ATP channel may be are useful in the treatment neural tissue where damage or destruction of the tissue, such as a gliotic capsule, is desired.
    Type: Application
    Filed: March 1, 2015
    Publication date: October 1, 2015
    Inventors: J. Marc Simard, Mingkui Chen
  • Patent number: 9107932
    Abstract: A composition comprising a novel Ca2+-activated, [ATP]i-sensitive nonspecific cation (NCCa-ATP) channel is described. The channel is found in mammalian neural cells and exhibits a different sensitivity to block by various adenine nucleotides, and is activated by submicromolar [Ca]i. The NCCa-ATP channel is activated under conditions of ATP depletion, which causes severe cell depolarization, followed by cell swelling. The NCCa-ATP channel is regulated by a sulfonylurea receptor and is inhibited by sulfonylurea compounds glibenclamide and tolbutamide. Methods employing compositions comprising the NCCa-ATP channel to screen for compounds that block the channel and the use of such antagonists as therapeutics in preventing brain swelling and damage are described. In addition, methods employing compositions comprising the Kir2.3 channel to screen for compounds that open the channel and the use of such antagonists as therapeutics in preventing brain swelling and damage are described.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: August 18, 2015
    Assignees: University of Maryland, Baltimore, The United States of America as Represented by the Department of Veterans Affairs
    Inventors: J. Marc Simard, Mingkui Chen
  • Patent number: 8980952
    Abstract: The present invention is directed to therapeutic compounds, treatment methods, and kits affecting the NCCa-ATP channel of neural tissue, including neurons, glia and blood vessels within the nervous system, and methods of using same. The NCCa-ATP channel is newly expressed in neural tissue following injury such as ischemia, and is regulated by the sulfonylurea receptor SUR1, being inhibited by sulfonylurea compounds, e.g., glibenclamide and tolbutamide, and opened by diazoxide. Antagonists of the NCCa-ATP channel, including SUR1 antagonists, are useful in the prevention, diminution, and treatment of injured or diseased neural tissue, including astrocytes, neurons and capillary endothelial cells, that is due to ischemia, tissue trauma, brain swelling and increased tissue pressure, or other forms of brain or spinal cord disease or injury. Agonists of the NCCa-ATP channel may be are useful in the treatment neural tissue where damage or destruction of the tissue, such as a gliotic capsule, is desired.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: March 17, 2015
    Assignees: University of Maryland, Baltimore, The United States of America as represented by the Dept. of Veterans Affairs
    Inventors: J. Marc Simard, Mingkui Chen
  • Publication number: 20140235564
    Abstract: A composition comprising a novel Ca2+-activated, [ATP]i-sensitive nonspecific cation (NCCa-ATP) channel is described. The channel is found in mammalian neural cells and exhibits a different sensitivity to block by various adenine nucleotides, and is activated by submicromolar [Ca]i. The NCCa-ATP channel is activated under conditions of ATP depletion, which causes severe cell depolarization, followed by cell swelling. The NCCa-ATP channel is regulated by a sulfonylurea receptor and is inhibited by sulfonylurea compounds glibenclamide and tolbutamide. Methods employing compositions comprising the NCCa-ATP channel to screen for compounds that block the channel and the use of such antagonists as therapeutics in preventing brain swelling and damage are described. In addition, methods employing compositions comprising the Kir2.3 channel to screen for compounds that open the channel and the use of such antagonists as therapeutics in preventing brain swelling and damage are described.
    Type: Application
    Filed: February 20, 2014
    Publication date: August 21, 2014
    Inventors: J. Marc Simard, Mingkui Chen
  • Publication number: 20140171467
    Abstract: Methods and compositions are provided that are utilized for treatment and/or prevention of intraventricular hemorrhage or progressive hemorrhagic necrosis (PHN), particularly following spinal cord injury. In particular, the methods and compositions are inhibitors of a particular NCca-ATP channel and include, for example, inhibitors of SURI and/or inhibitors of TRPM4. Kits for treatment and/or prevention of intraventricular hemorrhage or progressive hemorrhagic necrosis (PHN), particularly following spinal cord injury, are also provided. The present invention also concerns treatment and/or prevention of intraventricular hemorrhage in infants, including premature infants utilizing one or more inhibitors of the channel is provided to the infant, for example to brain cells of the infant.
    Type: Application
    Filed: September 27, 2013
    Publication date: June 19, 2014
    Inventor: J. Marc Simard
  • Patent number: 8569377
    Abstract: The present invention is directed to therapeutic compositions targeting the NCCa-ATP channel of an astrocyte, neuron or capillary endothelial cell and methods of using same. More specifically, antagonists of the NCCa-ATP channel are contemplated. The compositions are used to prevent cell death and to treat secondary damage associated with spinal cord injury.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: October 29, 2013
    Assignees: The United States of America as Represented by the Department of Veteran Affairs, University of Maryland, Baltimore
    Inventor: J. Marc Simard
  • Patent number: 8557867
    Abstract: Methods and compositions are provided that are utilized for treatment and/or prevention of intraventricular hemorrhage or progressive hemorrhagic necrosis (PHN), particularly following spinal cord injury. In particular, the methods and compositions are inhibitors of a particular NCca-ATP channel and include, for example, inhibitors of SUR1 and/or inhibitors of TRPM4. Kits for treatment and/or prevention of intraventricular hemorrhage or progressive hemorrhagic necrosis (PHN), particularly following spinal cord injury, are also provided. The present invention also concerns treatment and/or prevention of intraventricular hemorrhage in infants, including premature infants utilizing one or more inhibitors of the channel is provided to the infant, for example to brain cells of the infant.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: October 15, 2013
    Assignees: The United States of America as Represented by the Department of Veterans Affairs, University of Maryland, Baltimore
    Inventor: J. Marc Simard
  • Patent number: 8318810
    Abstract: A composition comprising a novel Ca2+-activated, [ATP]i-sensitive nonspecific cation (NCCa-ATP) channel is described. The channel is found in mammalian neural cells and exhibits a different sensitivity to block by various adenine nucleotides, and is activated by submicromolar [Ca]i. The NCCa-ATP channel is activated under conditions of ATP depletion, which causes severe cell depolarization, followed by cell swelling. The NCCa-ATP channel is regulated by a sulfonylurea receptor and is inhibited by sulfonylurea compounds glibenclamide and tolbutamide. Methods employing compositions comprising the NCCa-ATP channel to screen for compounds that block the channel and the use of such antagonists as therapeutics in preventing brain swelling and damage are described. In addition, methods employing compositions comprising the Kir2.3 channel to screen for compounds that open the channel and the use of such antagonists as therapeutics in preventing brain swelling and damage are described.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: November 27, 2012
    Assignees: University of Maryland, Baltimore, The United States of America as represented by the Department of Veterans Affairs
    Inventors: J. Marc Simard, Mingkui Chen
  • Publication number: 20120237449
    Abstract: A composition comprising a novel Ca2+-activated, [ATP]i-sensitive nonspecific cation (NCCa-ATP) channel is described. The channel is found in mammalian neural cells and exhibits a different sensitivity to block by various adenine nucleotides, and is activated by submicromolar [Ca]i. The NCCa-ATP channel is activated under conditions of ATP depletion, which causes severe cell depolarization, followed by cell swelling. The NCCa-ATP channel is regulated by a sulfonylurea receptor and is inhibited by sulfonylurea compounds glibenclamide and tolbutamide. Methods employing compositions comprising the NCCa-ATP channel to screen for compounds that block the channel and the use of such antagonists as therapeutics in preventing brain swelling and damage are described. In addition, methods employing compositions comprising the Kir2.3 channel to screen for compounds that open the channel and the use of such antagonists as therapeutics in preventing brain swelling and damage are described.
    Type: Application
    Filed: May 30, 2012
    Publication date: September 20, 2012
    Inventors: J. Marc Simard, Mingkui Chen
  • Publication number: 20110263478
    Abstract: Methods and compositions are provided that are utilized for treatment and/or prevention of intraventricular hemorrhage or progressive hemorrhagic necrosis (PHN). In particular, the methods and compositions are inhibitors of a particular NCca-ATP channel and include, for example, inhibitors of SUR1 and/or inhibitors of TRPM4. Kits for treatment and/or prevention of intraventricular hemorrhage or progressive hemorrhagic necrosis (PHN), particularly following spinal cord injury, are also provided. The present invention also concerns treatment and/or prevention of intraventricular hemorrhage in infants, including premature infants utilizing one or more inhibitors of the channel is provided to the infant, for example to brain cells of the infant.
    Type: Application
    Filed: September 16, 2009
    Publication date: October 27, 2011
    Inventor: J. Marc Simard
  • Publication number: 20110092542
    Abstract: The present invention is directed to therapeutic compositions targeting the NCCa-ATP channel of an astrocyte, neuron or capillary endothelial cell and methods of using same. More specifically, antagonists of the NCCa-ATP channel are contemplated. The compositions are used to prevent cell death and to treat secondary damage associated with spinal cord injury.
    Type: Application
    Filed: December 9, 2010
    Publication date: April 21, 2011
    Inventor: J. Marc Simard
  • Patent number: 7872048
    Abstract: The present invention is directed to therapeutic compositions targeting the NCCa-ATP channel of an astrocyte, neuron or capillary endothelial cell and methods of using same. More specifically, antagonists of the NCCa-ATP channel are contemplated. The compositions are used to prevent cell death and to treat secondary damage associated with spinal cord injury.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: January 18, 2011
    Assignee: University of Maryland, Baltimore
    Inventor: J. Marc Simard
  • Publication number: 20100311639
    Abstract: Methods and compositions are provided that are utilized for treatment and/or prevention of intraventricular hemorrhage or progressive hemorrhagic necrosis (PHN), particularly following spinal cord injury. In particular, the methods and compositions are inhibitors of a particular NCca-ATP channel and include, for example, inhibitors of SUR1 and/or inhibitors of TRPM4. Kits for treatment and/or prevention of intraventricular hemorrhage or progressive hemorrhagic necrosis (PHN), particularly following spinal cord injury, are also provided. The present invention also concerns treatment and/or prevention of intraventricular hemorrhage in infants, including premature infants utilizing one or more inhibitors of the channel is provided to the infant, for example to brain cells of the infant.
    Type: Application
    Filed: June 20, 2008
    Publication date: December 9, 2010
    Inventor: J. Marc Simard
  • Publication number: 20100143347
    Abstract: The present invention concerns protection of an organ or tissue following an ischemic episode In particular aspects, the invention concerns organ preservation for transplantation, angina pectoris, kidney reperfusion injury, and so forth In specific embodiments, the organ is subjected to an inhibitor of an NCCa-ATP channel that is regulated by SUR1 Exemplary inhibitors include sulfonylurea compounds, such as glibenclamide, for example
    Type: Application
    Filed: January 11, 2008
    Publication date: June 10, 2010
    Inventor: J. Marc Simard
  • Publication number: 20100092469
    Abstract: The present invention is directed to a combination of therapeutic compounds and treatment methods and kits using the combination. In particular, one of the combination affects the NCca-ATP channel of neural tissue, including neurons, glia and blood vessels within the nervous system. Exemplary SUR1 and/or TRPM4 antagonists that inhibit the NCca-ATP channel may be employed in the combination. The combination therapy also employs one or more of a non-selective cation channel blocker and/or an antagonist of VEFG, NOS, MMP, or thrombin. Exemplary indications for the combination therapy includes the prevention, diminution, and/or treatment of injured or diseased neural tissue, including astrocytes, neurons and capillary endothelial cells, that is due to ischemia, tissue trauma, brain swelling and increased tissue pressure, or other forms of brain or spinal cord disease or injury, for example.
    Type: Application
    Filed: February 8, 2008
    Publication date: April 15, 2010
    Inventors: J. Marc Simard, Vladimir Gerzanich
  • Publication number: 20090137680
    Abstract: The present invention is directed to therapeutic compounds, treatment methods, and kits affecting the NCCa-ATP channel of neural tissue, including neurons, glia and blood vessels within the nervous system, and methods of using same. The NCCa-ATP channel is newly expressed in neural tissue following injury such as ischemia, and is regulated by the sulfonylurea receptor SUR1, being inhibited by sulfonylurea compounds, e.g., glibenclamide and tolbutamide, and opened by diazoxide. Antagonists of the NCCa-ATP channel, including SUR1 antagonists, are useful in the prevention, diminution, and treatment of injured or diseased neural tissue, including astrocytes, neurons and capillary endothelial cells, that is due to ischemia, tissue trauma, brain swelling and increased tissue pressure, or other forms of brain or spinal cord disease or injury. Agonists of the NCCa-ATP channel may be are useful in the treatment neural tissue where damage or destruction of the tissue, such as a gliotic capsule, is desired.
    Type: Application
    Filed: August 29, 2008
    Publication date: May 28, 2009
    Inventors: J. Marc Simard, Mingkui Chen
  • Publication number: 20090130083
    Abstract: The present invention is directed to therapeutic compositions targeting the NCCa-ATP channel of an astrocyte, neuron or capillary endothelial cell and methods of using same. More specifically, agonists and antagonists of the NCCa-ATP channel are contemplated. The therapeutic compositions are used to treat cancer, more specifically, a metastatic brain tumor, wherein a tumor-brain barrier is present. Such treatments are contemplated in combination with conventional anti-cancer therapies. Alternatively, the compositions are used to prevent cell death and to treat cerebral edema that result from ischemia, due to interruption of blood flow, to tissue trauma or to increased tissue pressure.
    Type: Application
    Filed: July 25, 2005
    Publication date: May 21, 2009
    Applicants: UNIVERSITY OF MARYLAND, DEPARTMENT OF VETERANS AFFAIRS
    Inventors: J. Marc Simard, Mingkui Chen
  • Publication number: 20080139659
    Abstract: A composition comprising a novel Ca2+-activated, [ATP]i-sensitive nonspecific cation (NCCa-ATP) channel is described. The channel is found in mammalian neural cells and exhibits a different sensitivity to block by various adenine nucleotides, and is activated by submicromolar [Ca]i. The NCCa-ATP channel is activated under conditions of ATP depletion, which causes severe cell depolarization, followed by cell swelling. The NCCa-ATP channel is regulated by a sulfonylurea receptor and is inhibited by sulfonylurea compounds glibenclamide and tolbutamide. Methods employing compositions comprising the NCCa-ATP channel to screen for compounds that block the channel and the use of such antagonists as therapeutics in preventing brain swelling and damage are described. In addition, methods employing compositions comprising the Kir2.3 channel to screen for compounds that open the channel and the use of such antagonists as therapeutics in preventing brain swelling and damage are described.
    Type: Application
    Filed: September 19, 2007
    Publication date: June 12, 2008
    Applicant: University of Maryland
    Inventors: J. Marc Simard, Mingkui Chen
  • Patent number: 7285574
    Abstract: A composition comprising a novel Ca2+-activated, [ATP]i-sensitive nonspecific cation (NCCa-ATP) channel is described. The channel is found in mammalian neural cells and exhibits a different sensitivity to block by various adenine nucleotides, and is activated by submicromolar [Ca]i. The NCCa-ATP channel is activated under conditions of ATP depletion, which causes severe cell depolarization, followed by cell swelling. The NCCa-ATP channel is regulated by a sulfonylurea receptor and is inhibited by sulfonylurea compounds glibenclamide and tolbutamide. Methods employing compositions comprising the NCCa-ATP channel to screen for compounds that block the channel and the use of such antagonists as therapeutics in preventing brain swelling and damage are described. In addition, methods employing compositions comprising the Kir2.3 channel to screen for compounds that open the channel and the use of such antagonists as therapeutics in preventing brain swelling and damage are described.
    Type: Grant
    Filed: April 5, 2005
    Date of Patent: October 23, 2007
    Assignee: University of Maryland, Baltimore
    Inventors: J. Marc Simard, Mingkui Chen