Patents by Inventor Yang-Dar Yuan

Yang-Dar Yuan 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: 9271946
    Abstract: A method for treating chemo therapy or radiation therapy side effects in a mammal undergoing chemotherapy and/or radiation therapy, the method comprising a step of administering to the mammal a therapeutically effective amount of a RAR antagonist or RAR inverse agonist which binds to receptors of the RAR?, RAR? and RAR? subtypes is disclosed. Such side effects include chemoradiotherapy-induced alopecia, chemoradiotherapy-induced thrombocytopenia, chemoradiotherapy-induced leucopenia and chemoradiotherapy-induced neutropenia.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: March 1, 2016
    Assignee: IO Therapeutics, Inc.
    Inventors: Roshantha A. Chandraratna, Yang-Dar Yuan
  • Publication number: 20090176862
    Abstract: A method for treating chemo therapy or radiation therapy side effects in a mammal undergoing chemotherapy and/or radiation therapy, the method comprising a step of administering to the mammal a therapeutically effective amount of a RAR antagonist or RAR inverse agonist which binds to receptors of the RAR?, RAR? and RAR? subtypes is disclosed. Such side effects include chemoradiotherapy-induced alopecia, chemoradiotherapy-induced thrombocytopenia, chemoradiotherapy-induced leucopenia and chemoradiotherapy-induced neutropenia.
    Type: Application
    Filed: November 13, 2008
    Publication date: July 9, 2009
    Applicant: Vitae Pharmaceuticals, Inc.
    Inventors: Roshantha A. Chandraratna, Yang-Dar Yuan
  • Publication number: 20080214652
    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: February 27, 2008
    Publication date: September 4, 2008
    Inventors: Yang-Dar Yuan, Scott M. Thacher, Elliott S. Klein, Roshantha A. Chandraratna
  • Patent number: 7351737
    Abstract: Compounds of the formula where the variables are defined in the specification have cytochrome P450RAI-1 and P450RAI-2 inhibitory activity, and are suitable for treatment of mammals with conditions which are treatable with retinoids, or which are controlled by or responsive to the organism's native retinoic acid. Formulations containing the compounds of the invention can also be co-administered with retinoids and/or Vitamin A to enhance or prolong the effects of medications containing retinoids, Vitamin A, or of the organism's native retinoic acid.
    Type: Grant
    Filed: March 14, 2003
    Date of Patent: April 1, 2008
    Assignee: Allergan, Inc.
    Inventors: Jayasree Vasudevan, Liming Wang, Xiaoxia Liu, Kwok-Yin Tsang, Yang-Dar Yuan, Roshantha A. Chandraratna
  • Publication number: 20070185055
    Abstract: The present invention relates to a method of treatment of cachexia in a subject in need of treatment. More specifically, the present invention relates to the use of retinoid compounds that act on retinoid X receptors (RXRs) for the treatment of cachexia in a subject in need of treatment. The cachexia is associated with, in other words a complication of, a primary disease, condition or disorder. Primary diseases, conditions and disorders include, but are not limited to, cancer, AIDS, liver cirrhosis, diabetes mellitus, chronic renal failure, chronic obstructive pulmonary disease, chronic cardiac failure, immune system diseases (e.g., rheumatoid arthritis and systemic lupus erythematosus), tuberculosis, cystic fibrosis, gastrointestinal disorders (e.g., irritable bowel syndrome and inflammatory bowel disease), Parkinson's disease, anorexia nervosa, dementia, major depression, an aged condition and sarcopenia.
    Type: Application
    Filed: February 6, 2006
    Publication date: August 9, 2007
    Inventors: Guang Liang Jiang, Yang-Dar Yuan, Roshantha A. Chandraratna
  • Publication number: 20070054882
    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: Application
    Filed: August 14, 2006
    Publication date: March 8, 2007
    Inventors: Elliott Klein, Yang-Dar Yuan, Roshantha Chandraratna
  • Patent number: 7105566
    Abstract: The invention provides in one embodiment a method for treating vascular trauma. The method can include administering to an individual undergoing vascular trauma an effective amount of a retinoic acid receptor (RAR) antagonist or an RAR inhibitor. The methods can be used to lower serum triglycerides in a patient undergoing an invasive vascular procedure such as vascular surgery.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: September 12, 2006
    Assignee: Allergan, Inc.
    Inventors: Roshantha A. Chandraratna, Yang-Dar Yuan, Tuong P. Dang, Sheng Z. Loh
  • Patent number: 7019034
    Abstract: Diabetic mammals are treated with compounds that are significantly more efficacious as agonists of RXR? retinoid receptors than as agonists of RXR? or RXR? retinoid receptors. The treatment reduces serum glucose and triglyceride levels of the mammals without the undesirable side effects of reducing serum thyroxine levels and a transient increase in serum triglyceride levels Compounds suitable for use in the methods of treatments of the present invention are selected by testing and identifying compounds of selective or specific efficacy as agonists of RXR? retinoid receptors in preference over RXR? and/or RXR? retinoid receptors. Novel compounds used in the methods of the invention have Formula 1 where the variables are defined as disclosed in the specification.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: March 28, 2006
    Assignee: Allergan, Inc.
    Inventors: Yang-Dar Yuan, Richard L. Beard, Roshantha A. Chandraratna
  • Publication number: 20050171151
    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: December 17, 2004
    Publication date: August 4, 2005
    Applicant: Allergan, Inc.
    Inventors: Yang-Dar Yuan, Scott Thacher, Elliott Klein, Roshantha Chandraratna
  • Publication number: 20040147611
    Abstract: Diabetic mammals are treated with compounds that are significantly more efficacious as agonists of RXR&bgr; retinoid receptors than as agonists of RXR&agr; or RXR&ggr; retinoid receptors. The treatment reduces serum glucose and triglyceride levels of the mammals without the undesirable side effects of reducing serum thyroxine levels and a transient increase in serum triglyceride levels Compounds suitable for use in the methods of treatments of the present invention are selected by testing and identifying compounds of selective or specific efficacy as agonists of RXR&bgr; retinoid receptors in preference over RXR&agr; and/or RXR&ggr; retinoid receptors. Novel compounds used in the methods of the invention have Formula 1 where the variables are defined as disclosed in the specification.
    Type: Application
    Filed: December 17, 2003
    Publication date: July 29, 2004
    Inventors: Yang-Dar Yuan, Richard L. Beard, Roshantha A. Chandraratna
  • Patent number: 6759547
    Abstract: Compounds of the formula where the variables have the meaning defined in the specification are capable of reducing serum glucose levels in diabetic mammals without the undesirable side effect of reducing serum thyroxine levels.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: July 6, 2004
    Assignee: Allergan, Inc.
    Inventors: Richard L. Beard, Haiqing Yuan, Yang-Dar Yuan, Roshantha A. Chandraratna
  • Patent number: 6740676
    Abstract: Compounds of Formula 1: wherein the variables are defined in the specification have cytochrome P450RAI-1 and P450RAI-2 inhibitory activity, and are suitable for treatment of mammals with conditions which are treatable with retinoids, or which are controlled by or responsive to the organism's native retinoic acid. Formulations containing the compounds of the invention can also be co-administered with retinoids and/or Vitamin A to enhance or prolong the effects of medications containing retinoids, Vitamin A, or of the organism's native retinoic acid.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: May 25, 2004
    Assignee: Allergan, Inc.
    Inventors: Jayasree Vasudevan, Liming Wang, Xiaoxia Liu, Kwok-Yin Tsang, Yang-Dar Yuan, Roshantha S. Chandraratna
  • Publication number: 20040077710
    Abstract: The invention provides in one embodiment a method for treating vascular trauma. The method can include administering to an individual undergoing vascular trauma an effective amount of a retinoic acid receptor (RAR) antagonist or an RAR inhibitor. The methods can be used to lower serum triglycerides in a patient undergoing an invasive vascular procedure such as vascular surgery.
    Type: Application
    Filed: October 22, 2002
    Publication date: April 22, 2004
    Inventors: Roshantha A. Chandraratna, Yang-Dar Yuan, Tuong P. Dang, Sheng Z. Loh
  • Publication number: 20040077721
    Abstract: vitamin A, or a derivative of vitamin A having vitamin A like activity is co-administered with inhibitors of the CP450RAI1 and/or of CP450RAI2 enzymes for the purpose of treating diseases and conditions in mammals, including humans, which diseases or conditions are prevented, treated, ameliorated, or the onset of which is delayed by administration of retinoid compounds or by the mammalian organism's naturally occurring retinoic acid.
    Type: Application
    Filed: September 5, 2003
    Publication date: April 22, 2004
    Inventors: Yang-Dar Yuan, Jayasree Vasudevan, Scott Thacher, Roshantha A. Chandraratna
  • Publication number: 20030207937
    Abstract: Compounds of the formula 1
    Type: Application
    Filed: March 14, 2003
    Publication date: November 6, 2003
    Inventors: Jayasree Vasudevan, Liming Wang, Xiaoxia Liu, Kwok-Yin Tsang, Yang-Dar Yuan, Roshantha A. Chandraratna
  • Publication number: 20030191181
    Abstract: Compounds of Formula 1 1
    Type: Application
    Filed: March 19, 2002
    Publication date: October 9, 2003
    Inventors: Jayasree Vasudevan, Liming Wang, Xiaoxia Liu, Kwok-Yin Tsang, Yang-Dar Yuan, Roshantha Chandraratna
  • Publication number: 20030144256
    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: Application
    Filed: November 25, 2002
    Publication date: July 31, 2003
    Applicant: Allergan Sales, Inc.
    Inventors: Elliott S. Klein, Yang-Dar Yuan, 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: 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