Patents by Inventor Roshantha A. Chandraratna

Roshantha A. Chandraratna 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: 20030109687
    Abstract: Compounds of the formula
    Type: Application
    Filed: August 5, 2002
    Publication date: June 12, 2003
    Inventors: Tae K. Song, Min Teng, Roshantha A. Chandraratna
  • Patent number: 6573271
    Abstract: Proliferation of retinal pigment epithelium following surgery or trauma or resulting in ocular diseases associated with choroidal neovascularization, such as age related macular degeneration and histoplasmosis syndrome, is prevented by contacting retinal pigment epithelium cells with a therapeutic amount of a retinoic acid receptor (RAR agonist, preferably one with specific activity for retinoic acid receptors. Preferably the RAR agonist is also a potent antagonist of AP1-dependent gene expression. Alternatively, the proliferation of retinal pigment epithelium is ameliorated with a therapeutic amount of an AP-1 antagonist, alone or in combination with an RAR agonist. The drug can be administered by bolus injection into the vitreous cavity using a dosage from about 50 to 150 &mgr;g. Or by slow release from liposomes or an oil tamponade injected into the vitreous cavity. Formulations for preventing proliferation of retinal pigment epithelium are also provided.
    Type: Grant
    Filed: September 11, 2001
    Date of Patent: June 3, 2003
    Assignees: John Hopkins University School of Medicine, The Allergan
    Inventors: Peter A. Campochiaro, Larry A. Wheeler, Roshantha A. Chandraratna, Sunil Nagpal, Eugene De Juan, Jr.
  • Patent number: 6555690
    Abstract: Compounds of the formula where the symbols have the meaning described in the application, have retinoid-like or retinoid antagonist-like biological activity.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: April 29, 2003
    Assignee: Allergan, Inc.
    Inventors: Alan T. Johnson, Min Teng, Vidyasagar Vuligonda, Richard L. Beard, Samuel J. Gillett, Tien T. Duong, Roshantha A. Chandraratna
  • Publication number: 20030078294
    Abstract: Methods and compositions for the treatment of lung disease such as emphysema and/or bronchopulmonary dysplasia in a mammal. Also disclosed are methods and compositions promoting the formation of alveolar septa and increasing the gas-exchange surface area of a mammalian lung, and for the prevention and/or treatment of alveolar destruction.
    Type: Application
    Filed: November 25, 2002
    Publication date: April 24, 2003
    Applicant: Allergan Sales, Inc
    Inventors: Roshantha A. Chandraratna, Donald Massaro, Gloria DeCarlo Massaro
  • Publication number: 20030078440
    Abstract: Compounds of the formula 1
    Type: Application
    Filed: October 11, 2002
    Publication date: April 24, 2003
    Inventors: Vidyasagar Vuligonda, Min Teng, Richard L. Beard, Alan T. Johnson, Yuan Lin, Roshantha A. Chandraratna
  • Publication number: 20030078270
    Abstract: Novel compounds having the Formulas 1 through 8, wherein the symbols have the meaning defined in the specification, and certain previously known compounds have been discovered to act as inhibitors of the cytochrome P450RAI (retinoic acid inducible) enzyme, and are used for treating diseases responsive to treatment by retinoids. The compound can also be used in co-treatment with retinoids.
    Type: Application
    Filed: August 5, 2002
    Publication date: April 24, 2003
    Inventors: Jayasree Vasudevan, Alan T. Johnson, Liming Wang, Dehua Huang, Roshantha A. Chandraratna
  • Publication number: 20030077664
    Abstract: The present invention provides methods for identifying an effective agent that modulates a biological activity of a nuclear hormone receptor. In a method of the invention, an isolated receptor-containing complex is assayed for an altered modification state as compared to a control modification state. The presence of an altered modification state serves to identify an effective agent that modulates a biological activity of the nuclear hormone receptor.
    Type: Application
    Filed: August 2, 2001
    Publication date: April 24, 2003
    Inventors: Yi Zhao, Scott M. Thacher, Jia-Hao Xiao, Jyotirmoy Kusari, Roshantha A. Chandraratna
  • Patent number: 6538149
    Abstract: Compounds of the formula where the symbols have the meaning defined in the specification, have retinoid, retinoid antagonist and/or retinoid inverse-agonist-like biological activity.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: March 25, 2003
    Assignee: Allergan
    Inventors: Vidyasagar Vuligonda, Alan T. Johnson, Roshantha A. Chandraratna
  • Patent number: 6534544
    Abstract: Retinoid compounds which act specifically or selectively on RAR&agr; receptor subtypes in preference over RAR&bgr; and RAR&Ggr; receptor subtypes, possess desirable pharmaceutical properties associated with retinoids, and are particularly suitable for treatment of tumors, such as acute monocytic leukemia, cervical carcinoma, myeloma, ovarian carcinomas and head and neck carcinomas, without having one or more undesirable side effects of retinoids, such as inducement of weight loss, mucocutaneous toxicity, skin irritation and teratogenecity.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: March 18, 2003
    Assignee: Allergan Sales, Inc.
    Inventors: Min Teng, Tien T. Duong, Roshantha A. Chandraratna
  • Patent number: 6531599
    Abstract: Compounds having Formula 1 wherein the symbols have the meaning defined in the specification are inhibitors of the cytochrome P450RAI (retinoic acid inducible) enzyme, and are used for treating diseases responsive to treatment by retinoids.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: March 11, 2003
    Assignee: Allergan Sales, Inc.
    Inventors: Jayasree Vasudevan, Alan T. Johnson, Dehua Huang, Roshantha A. Chandraratna
  • Patent number: 6521624
    Abstract: Aryl-substituted and aryl and (3-oxo-1-propenly)-substituted benzopyran, benzothiopyran, 1,2-dihydroquinoline, and 5,6-dihydronaphthalene derivatives have retinoid negative hormone and/or antagonist-like biological activities. The invented RAR antagonists can be administered to mammals, including humans, for the purpose of preventing or diminishing action of RAR agonists on the bound receptor sites. Specifically, the RAR agonists are administered or coadministered with retinoid drugs to prevent or ameliorate toxicity or side effects caused by retinoids or vitamin A or vitamin A precursors. The retinoid negative hormones can be used to potentiate the activities of other retinoids and nuclear receptor agonists. For example, the retinoid negative hormone called AGN 193109 effectively increased the effectiveness of other retinoids and steroid hormones in in vitro transactivation assays. Additionally, transactivation assays can be used to identify compounds having negative hormone activity.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: February 18, 2003
    Assignee: Allergan, Inc.
    Inventors: Elliott S. Klein, Alan T. Johnson, Andrew M. Standeven, Richard L. Beard, Samuel J. Gillett, Tien T. Duong, Sunil Nagpal, Vidyasagar Vuligonda, Min Teng, Roshantha A. Chandraratna
  • Patent number: 6521641
    Abstract: Methods and compositions for inhibiting or preventing spermatogenesis in a male mammal. Also disclosed are compounds and formulations for use in such methods.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: February 18, 2003
    Assignee: Allergan, Inc.
    Inventors: Elliott S. Klein, Yang-Dar Yuan, Roshantha A. Chandraratna
  • Publication number: 20030003517
    Abstract: The present invention provides a method of identifying an effective agent that dissociates nuclear hormone receptor activities. The method includes the steps of contacting a nuclear hormone receptor with one or more agents under conditions suitable for forming a test complex containing nuclear hormone receptor dimer, coactivator and corepressor; assaying for coactivator association with the test complex; and assaying for corepressor association with the test complex, where coactivator association combined with corepressor association indicates that at least one of the agents is an effective agent that dissociates nuclear hormone receptor activities.
    Type: Application
    Filed: March 22, 2001
    Publication date: January 2, 2003
    Inventors: Elliott S. Klein, Weizhen Wang, Roshantha A. Chandraratna
  • Publication number: 20020193578
    Abstract: Compounds having Formula 1 wherein the symbols have the meaning defined in the specification are inhibitors of the cytochrome P450RAI (retinoic acid inducible) enzyme, and are used for treating diseases responsive to treatment by retinoids.
    Type: Application
    Filed: December 5, 2001
    Publication date: December 19, 2002
    Inventors: Jayasree Vasudevan, Alan T. Johnson, Dehua Huang, Roshantha A. Chandraratna
  • Publication number: 20020193403
    Abstract: The current invention relates to methods for treating hyperlipidemia in mammals, including humans. More specifically, the current invention relates to the use of retinoid or retinoid derivative that is able to act as an antagonist or inverse agonist of a retinoid receptor to treat hyperlipidemia.
    Type: Application
    Filed: May 3, 2001
    Publication date: December 19, 2002
    Applicant: Allergan Sales, Inc.
    Inventors: Yang-Dar Yuan, Scott M. Thacher, Elliott S. Klein, Roshantha A. Chandraratna
  • Patent number: 6495552
    Abstract: Novel compounds having the Formulas 1 through 8, wherein the symbols have the meaning defined in the specification, and certain previously known compounds have been discovered to act as inhibitors of the cytochrome P450RAI (retinoic acid inducible) enzyme, and are used for treating diseases responsive to treatment by retinoids. The compound can also be used in co-treatment with retinoids.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: December 17, 2002
    Assignee: Allergan, Inc.
    Inventors: Jayasree Vasudevan, Alan T. Johnson, Liming Wang, Dehua Huang, Roshantha A. Chandraratna
  • Patent number: 6492414
    Abstract: Methods and compositions for the treatment of lung disease such as emphysema and/or bronchopulmonary dysplasia in a mammal. Also disclosed are methods and compositions promoting the formation of alveolar septa and increasing the gas-exchange surface area of a mammalian lung, and for the prevention and/or treatment of alveolar destruction.
    Type: Grant
    Filed: April 13, 2000
    Date of Patent: December 10, 2002
    Assignee: Allergan, Inc.
    Inventors: Roshantha A. Chandraratna, Donald Massaro, Gloria DeCarlo Massaro
  • Publication number: 20020183285
    Abstract: Compounds having Formulas 5 and 6 wherein the symbols have the meaning defined in the specification are inhibitors of the cytochrome P450RAI (retinoic acid inducible) enzyme, and are used for treating diseases responsive to treatment by retinoids.
    Type: Application
    Filed: March 14, 2002
    Publication date: December 5, 2002
    Inventors: Jayasree Vasudevan, Alan T. Johnson, Liming Wang, Dehua Huang, Roshantha A. Chandraratna
  • Publication number: 20020173631
    Abstract: Compounds of the formula 1
    Type: Application
    Filed: May 8, 2002
    Publication date: November 21, 2002
    Inventors: Alan T. Johnson, Min Teng, Vidyasagar Vuligonda, Richard L. Beard, Samuel J. Gillett, Tien T. Duong, Roshantha A. Chandraratna
  • Publication number: 20020160986
    Abstract: Compounds having Formulas 5 and 6 wherein the symbols have the meaning defined in the specification are inhibitors of the cytochrome P450RAI (retinoic acid inducible) enzyme, and are used for treating diseases responsive to treatment by retinoids.
    Type: Application
    Filed: March 14, 2002
    Publication date: October 31, 2002
    Inventors: Jayasree Vasudevan, Alan T. Johnson, Liming Wang, Dehua Huang, Roshantha A. Chandraratna