Patents by Inventor Laszlo Prokai

Laszlo Prokai 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: 20220008571
    Abstract: Despite the widespread use of nanotechnology in radio-imaging applications, lipoprotein based delivery systems received only limited attention so far. The subject application provides for the synthesis of a novel hydrophobic radio-imaging tracer. This tracer, comprising a hydrazinonicotinic acid (HYNIC)-N-dodecylamide and 99mTc conjugate can be encapsulated into rHDL nanoparticles (NPs). These rHDL NPs can selectively target the Scavenger Receptor type B1 (SR-B1) that is overexpressed on most cancer cells due to excess demand for cholesterol for membrane biogenesis and thus can target tumors in-vivo. Details of the tracer synthesis, characterization of rHDL/tracer complex, in-vitro uptake, stability studies and in-vivo application of this new radio-imaging approach are provided.
    Type: Application
    Filed: November 18, 2019
    Publication date: January 13, 2022
    Inventors: ANDRAS G. LACKO, LASZLO PROKAI, KEILA ISAAC-OLIVÉ
  • Publication number: 20140294675
    Abstract: The present invention includes systems and methods for monitoring therapeutic drug concentration in blood by detecting markers, such as odors, upon exhalation by a patient after the drug is taken, wherein such markers result either directly from the drug itself or from an additive combined with the drug. In the case of olfactory markers, the invention preferably utilizes electronic sensor technology, such as the commercial devices referred to as “artificial” or “electronic” noses or tongues, to non-invasively monitor drug levels in blood. The invention further includes a reporting system capable of tracking drug concentrations in blood (remote or proximate locations) and providing the necessary alerts with regarding to ineffective or toxic drug dosages in a patient.
    Type: Application
    Filed: March 31, 2014
    Publication date: October 2, 2014
    Applicant: University of Florida Research Foundation, Inc.
    Inventors: Richard J. Melker, Donn Michael Dennis, Laszlo Prokai
  • Patent number: 8734853
    Abstract: Disclosed are high density lipoprotein-nucleic acid particles, wherein the particles include (a) an apolipoprotein; (b) a nucleic acid component comprising a therapeutic nucleic acid segment; and (c) a polypeptide comprising a positively charged region, wherein the positively-charged region of the polypeptide associates with the nucleic acid component. Also disclosed are pharmaceutical compositions that include a) an apolipoprotein; (b) a nucleic acid component comprising a therapeutic nucleic acid segment; and (c) a polypeptide comprising a positively charged region. Methods that concern the particles and pharmaceutical compositions of the present invention are also set forth, as well as kits.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: May 27, 2014
    Assignees: University of North Texas Health Science Center at Fort Worth, The Board of Regents, The University of Texas System
    Inventors: Anil K. Sood, Andras G. Lacko, Gabriel Lopez-Berestein, Lingegowda S. Mangala, Walter J. McConathy, Laszlo Prokai, Maya P. Nair
  • Publication number: 20110312899
    Abstract: Disclosed are high density lipoprotein-nucleic acid particles, wherein the particles include (a) an apolipoprotein; (b) a nucleic acid component comprising a therapeutic nucleic acid segment; and (c) a polypeptide comprising a positively charged region, wherein the positively-charged region of the polypeptide associates with the nucleic acid component. Also disclosed are pharmaceutical compositions that include a) an apolipoprotein; (b) a nucleic acid component comprising a therapeutic nucleic acid segment; and (c) a polypeptide comprising a positively charged region. Methods that concern the particles and pharmaceutical compositions of the present invention are also set forth, as well as kits.
    Type: Application
    Filed: November 17, 2009
    Publication date: December 22, 2011
    Applicants: UNT HEALTH SCIENCE CENTER AT FORT WORTH, BOARD OF REGENTS OF THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Anil K. Sood, Andras G. Lacko, Gabriel Lopez-Berestein, Lingegowda S. Mangala, Walter J. McConathy, Laszlo Prokai, Maya P. Nair
  • Patent number: 7572781
    Abstract: The subject invention provides a mechanism by which steroidal quinol compounds confer beneficial ophthalmic effects. The subject compounds possess a lipophilic-hydrophilic balance for transcorneal penetration and are readily reduced into parent phenolic A-ring steroid compounds to provide protection or treatment against various ocular symptoms and disorders. The compounds according to the subject invention appear to be highly advantageous as prodrugs to provide protection and/or treatment against ocular disorders. These prodrugs confer lipid solubility optimal for transocorneal penetration and are readily converted to endogenous reducing agents into active phenolic A-ring steroid compounds. To the extent that these prodrugs have reduced feminizing effects and systemic toxicity, they would be expected to be quite advantageous for protecting or treating the eye against ocular disorders such as cataract or glaucoma without undesired (systemic) side effects).
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: August 11, 2009
    Assignees: University of Florida, University of North Texas Health Science Center
    Inventors: Laszlo Prokai, Katalin Prokai, James Simpkins, Neeraj Agarwal
  • Patent number: 7534779
    Abstract: The subject invention provides a mechanism by which steroidal quinol compounds confer beneficial ophthalmic effects. The subject compounds possess a lipophilic-hydrophilic balance for transcorneal penetration and are readily reduced into parent phenolic A-ring steroid compounds to provide protection or treatment against various ocular symptoms and disorders. The compounds according to the subject invention appear to be highly advantageous as prodrugs to provide protection and/or treatment against ocular disorders. These prodrugs confer lipid solubility optimal for transcorneal penetration and are readily converted to endogenous reducing agents into active phenolic A-ring steroid compounds. To the extent that these prodrugs have reduced feminizing effects and systemic toxicity, they would be expected to be quite advantageous for protecting or treating the eye against ocular disorders such as cataract or glaucoma without undesired (systemic) side effects).
    Type: Grant
    Filed: August 14, 2007
    Date of Patent: May 19, 2009
    Assignees: University of Florida, University of North Texas Health Science Center
    Inventors: Laszlo Prokai, Katalin Prokai
  • Publication number: 20090005270
    Abstract: The present invention provides systems and methods for determining enzymatic competency, which is important in determining whether a patient may suffer an adverse drug reaction, has a disease associated with defects in specific enzymatic function, and/or has an enzyme defect that is likely to cause pathophysiology. As contemplated herein, a parent molecular entity is administered to a patient in whom enzymatic competency is to be determined. A sample of the patient's bodily fluid is exposed to a sensor of the invention to distinguish, detect, and quantify a detectable entity in the bodily fluid. Sensor-acquired data regarding the detectable entity is used to determine enzymatic competency. Preferably, a sample of a patient's exhaled breath is collected and exposed to the sensor of the invention.
    Type: Application
    Filed: September 20, 2005
    Publication date: January 1, 2009
    Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Richard J. Melker, Timothy E. Morey, Laszlo Prokai, Donn M. Dennis
  • Publication number: 20080311036
    Abstract: In vivo determination of regional damage with neural and organ injury specific imaging agents. Rapid, and non-invasive imaging compositions and methods for assessment of the extent of neurotoxic cell loss or nervous system damage resulting from nervous system injury due to ischemia, stroke, trauma, chemical or electrical insult, acute drug overdose or exposure to substance abuse (such as “recreational drugs”) infection or other insults. The same or similar rapid, and non-invasive imaging compositions and methods for assessment of the extent of the organ injury comprises any damage, injury or infection, functional failure to specific organs such as liver, kidney, prostate, lung, skeletal muscle, heart, pancreas, stomach, small and large intestine, bladder and the reproductive system as well as damage, injury or infection, functional failure to multi-organs, trauma-hemorrhagic shock and sepsis.
    Type: Application
    Filed: May 11, 2006
    Publication date: December 18, 2008
    Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Kevin Ka-Wang Wang, Ronald L. Hayes, Lewis R. Baxter, JR., Laszlo Prokai
  • Publication number: 20080193915
    Abstract: The subject invention provides novel isotope-labeled dinitrophenylhydrazines (DNPHs) and methods for their use in detecting and/or quantifying carbonyl groups in proteins and other analytes. In particular, the present invention provides novel methods for identifying biomarkers of oxidative stress, which can be used to either forecast or detect diseases and/or conditions associated with oxidative stress. In one embodiment of the invention, isotope-labeled DNPHs are derived from [13C6]chlorobenzene.
    Type: Application
    Filed: September 29, 2005
    Publication date: August 14, 2008
    Applicants: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC., UNIVERSITY OF NORTH TEXAS HEALTH SCIENCE CENTER AT FORT WORTH
    Inventors: Laszlo Prokai, Michael J. Forster
  • Publication number: 20080119446
    Abstract: The subject invention provides a mechanism by which steroidal quinol compounds confer beneficial ophthalmic effects. The subject compounds possess a lipophilic-hydrophilic balance for transcorneal penetration and are readily reduced into parent phenolic A-ring steroid compounds to provide protection or treatment against various ocular symptoms and disorders. The compounds according to the subject invention appear to be highly advantageous as prodrugs to provide protection and/or treatment against ocular disorders. These prodrugs confer lipid solubility optimal for transcorneal penetration and are readily converted to endogenous reducing agents into active phenolic A-ring steroid compounds. To the extent that these prodrugs have reduced feminizing effects and systemic toxicity, they would be expected to be quite advantageous for protecting or treating the eye against ocular disorders such as cataract or glaucoma without undesired (systemic) side effects).
    Type: Application
    Filed: August 14, 2007
    Publication date: May 22, 2008
    Inventors: Laszlo Prokai, Katalin Prokai
  • Patent number: 7300926
    Abstract: The present invention relates to novel estrogen-related steroidal quinols and their use as drugs for estrogen replacement therapy. The quinols of the present invention provide improved physicochemical properties, increased bioavailability, and improved distribution into tissues, bone, in the cardiovascular system, and in the CNS (central nervous system) with only a slight estrogenic action or no estrogenic action in the uterus. The compounds are suitable for the production of pharmaceutical agents for use in numerous indications (for example, estrogen replacement therapy, prevention and treatment of osteoporosis).
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: November 27, 2007
    Assignees: University of Florida Research Foundation, Inc., University of North Texas Health Science Center at Fort Worth
    Inventors: Laszlo Prokai, Katalin Prokai, James Simpkins
  • Publication number: 20070224128
    Abstract: The present invention provides novel methods for monitoring subject adherence in taking prescribed drugs by detecting markers in exhaled breath after a subject takes the prescribed drug. In particular, the present invention provides novel methods for making additives that are combined with the drug(s). Upon biological breakdown of the drug/additive formulation in a subject's body, markers resulting directly from the biological breakdown of the additives are detected in exhaled breath using sensor technology. In certain embodiments of the invention, the drug adherence monitoring systems and methods include a reporting system capable of tracking subject compliance (either remotely or proximately) and of providing necessary alerts to the subject, caregiver, healthcare provider, and the like.
    Type: Application
    Filed: March 7, 2007
    Publication date: September 27, 2007
    Inventors: Donn Michael Dennis, Richard J. Melker, Matthew M. Booth, Laszlo Prokai
  • Publication number: 20070213310
    Abstract: The subject invention provides a mechanism by which steroidal quinol compounds confer beneficial ophthalmic effects. The subject compounds possess a lipophilic-hydrophilic balance for transcorneal penetration and are readily reduced into parent phenolic A-ring steroid compounds to provide protection or treatment against various ocular symptoms and disorders. The compounds according to the subject invention appear to be highly advantageous as prodrugs to provide protection and/or treatment against ocular disorders. These prodrugs confer lipid solubility optimal for transocorneal penetration and are readily converted to endogenous reducing agents into active phenolic A-ring steroid compounds. To the extent that these prodrugs have reduced feminizing effects and systemic toxicity, they would be expected to be quite advantageous for protecting or treating the eye against ocular disorders such as cataract or glaucoma without undesired (systemic) side effects).
    Type: Application
    Filed: March 5, 2007
    Publication date: September 13, 2007
    Inventors: Laszlo Prokai, Katalin Prokai
  • Publication number: 20070155711
    Abstract: The subject invention provides a mechanism by which steroidal quinol compounds confer beneficial ophthalmic effects. The subject compounds possess a lipophilic-hydrophilic balance for transcomeal penetration and are readily reduced into parent phenolic A-ring steroid compounds to provide protection or treatment against various ocular symptoms and disorders. The compounds according to the subject invention appear to be highly advantageous as prodrugs to provide protection and/or treatment against ocular disorders. These prodrugs confer lipid solubility optimal for transocomeal penetration and are readily converted to endogenous reducing agents into active phenolic A-ring steroid compounds. To the extent that these prodrugs have reduced feminizing effects and systemic toxicity, they would be expected to be quite advantageous for protecting or treating the eye against ocular disorders such as cataract or glaucoma without undesired (systemic) side effects).
    Type: Application
    Filed: February 15, 2007
    Publication date: July 5, 2007
    Inventors: Laszlo Prokai, Katalin Prokai, James Simpkins, Neeraj Agarwal
  • Patent number: 7186707
    Abstract: The subject invention provides a mechanism by which steroidal quinol compounds confer beneficial ophthalmic effects. The subject compounds possess a lipophilic-hydrophilic balance for transcorneal penetration and are readily reduced into parent phenolic A-ring steroid compounds to provide protection or treatment against various ocular symptoms and disorders. The compounds according to the subject invention appear to be highly advantageous as prodrugs to provide protection and/or treatment against ocular disorders. These prodrugs confer lipid solubility optimal for transocorneal penetration and are readily converted to endogenous reducing agents into active phenolic A-ring steroid compounds. To the extent that these prodrugs have reduced feminizing effects and systemic toxicity, they would be expected to be quite advantageous for protecting or treating the eye against ocular disorders such as cataract or glaucoma without undesired (systemic) side effects).
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: March 6, 2007
    Assignees: University of Florida, University of North Texas Health Science Center
    Inventors: Laszlo Prokai, Katalin Prokai, James Simpkins, Neeraj Agarwal
  • Patent number: 7067257
    Abstract: The present invention relates to novel metabolically stable and centrally active TRH analogues and prodrug forms of these analogues, wherein a functional portion of TRH is substituted with a pyridinium moiety or an ester moiety. Methods of synthesis and use of the TRH analogues and associated prodrugs are also provided.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: June 27, 2006
    Inventor: Laszlo Prokai
  • Patent number: 7026306
    Abstract: The present invention relates to novel estrogen-related steroidal quinols and their use as prodrugs for phenolic estrogens and estrogen analogs. The quinols of the present invention provide improved physicochemical properties, increased bioavailability, and improved distribution into tissues and penetration across the blood-brain barrier when compared to phenolic estrogens and estrogen analogs.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: April 11, 2006
    Assignees: University of Florida Research Foundation, Inc., University of North Texas Health Science Center
    Inventors: Laszlo Prokai, Katalin Prokai, James Simpkins
  • Patent number: 6960574
    Abstract: Disclosed are compounds having the formula: where R1=H, C1-C6 alkyl, cycloalkyl, R2=H, C1-C6 alkyl, cycloalkyl W=CnH2n-m—NH (n=1-6, m=0, 2, or 4), X= R3= Y= Z=CONR8(CH2)n, CONR8(CH2)nCO, P(CH3)OCHR8OCOR9, SO2, SO2(CH2)n, SO2(CH2)nCO, SO2NR8(CH2)n, SO2NR8(CH2)nCO, n=1-4 R4=H, (CH2)nOH, (CH2)nOCOR10, (CH2)nNR10R11, (CH2)nCONR10R11, n=0-4 R5=H, (CH2)nNR12R13, n=0-4 R6=H, (CH2)nNR14R15, n=0-4 R7=H, C1-C6 alkyl, cycloalkyl; R8=H, C1-C6 alkyl, cycloalkyl; R9=H, C1-C6 alkyl, cycloalkyl; R10=H, C1-C6 alkyl, cycloalkyl; R11=H, C1-C6 alkyl, cycloalkyl; R12=H, C1-C6 alkyl, cycloalkyl; R13=H, C1-C6 alkyl, cycloalkyl; R14=H, C1-C6 alkyl, cycloalkyl; R15=H, C1-C6 alkyl, cycloalkyl. Dashed lines: optional; conformational constraint by (CH2)n, n=1-3, R?=H or O(?) as well as pharmaceuticals compositions and methods for the treatment of opiate addiction, opiate dependence, opiate tolerance, opiate related abstinence syndrome, nicotine addition and obesity based thereon.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: November 1, 2005
    Assignee: University of Florida
    Inventor: Laszlo Prokai
  • Publication number: 20050233459
    Abstract: The present invention includes systems and methods for monitoring therapeutic drug concentration in blood by detecting markers, such as odors, upon exhalation by a patient after the drug is taken, wherein such markers result either directly from the drug itself or from an additive combined with the drug. In the case of olfactory markers, the invention preferably utilizes electronic sensor technology, such as the commercial devices referred to as “artificial” or “electronic” noses or tongues, to non-invasively monitor drug levels in blood. The invention further includes a reporting system capable of tracking drug concentrations in blood (remote or proximate locations) and providing the necessary alerts with regarding to ineffective or toxic drug dosages in a patient.
    Type: Application
    Filed: April 1, 2005
    Publication date: October 20, 2005
    Inventors: Richard Melker, Donn Dennis, Laszlo Prokai
  • Patent number: 6797707
    Abstract: Disclosed are compounds having the formula: where R1=H, C1-C6 alkyl, cycloalkyl, R2=H, C1-C6 alkyl, cycloalkyl W=CnH2n-m—NH (n=1-6, m=0, 2, or 4), Z=CONR8(CH2)n, CONR8(CH2)nCO, P(CH3)OCHR8OCOR9, SO2, SO2(CH2)n, SO2(CH2)nCO, SO2NR8(CH2)n, SO2NR8(CH2)nCO, n=1-4 R4=H, (CH2)nOH, (CH2)nOCOR10, (CH2)nNR10R11, (CH2)nCONR10R11, n=0-4 R5=H, (CH2)nNR12R13, n=0-4 R6=H, (CH2)nNR14R15, n=0-4 R7=H, C1-C6 alkyl, cycloalkyl; R8=H, C1-C6 alkyl, cycloalkyl; R9=H, C1-C6 alkyl, cycloalkyl; R10=H, C1-C6 alkyl, cycloalkyl; R11=H, C1-C6 alkyl, cycloalkyl; R12=H, C1-C6 alkyl, cycloalkyl; R13=H, C1-C6 alkyl, cycloalkyl; R14=H, C1-C6 alkyl, cycloalkyl; R15=H, C1-C6 alkyl, cycloalkyl Dashed lines: optional; conformational constraint by (CH2)n, n=1-3, R′=H or O(═) as well as pharmaceuticals c
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: September 28, 2004
    Assignee: University of Florida
    Inventor: Laszlo Prokai