Blood Substitute Patents (Class 514/832)
-
Patent number: 12251670Abstract: The present invention relates to a method of producing a wood and textile fibre protection composition from tall oil pitch. The present invention also relates to a wood and textile fibre protection composition comprising tall oil pitch and use of the composition as a wood and textile fibre protection agent.Type: GrantFiled: April 25, 2019Date of Patent: March 18, 2025Assignee: BDC—TECHNOLOGY OYInventor: Juha Koskela
-
Patent number: 12251427Abstract: In vitro and in vivo methods of removing carbon monoxide from hemoglobin in blood or animal tissue are described. Methods of treating carboxyhemoglobinemia (carbon monoxide poisoning) in a subject are also described. The methods include administering natural or artificial oxygen carriers that are in their reduced form. Methods of producing a reduced oxygen carrier are further described. Methods of treating cyanide poisoning or hydrogen sulfide poisoning with oxygen carriers are also described.Type: GrantFiled: March 17, 2021Date of Patent: March 18, 2025Assignee: University of Pittsburgh—Of the Commonwealth System of Higher EducationInventors: Jason Joseph Rose, Qinzi Xu, Mark T. Gladwin, Jesus Tejero Bravo
-
Patent number: 12046375Abstract: A computing system for determining a systematic training strategy for the user is provided. The computing system includes a user device that uses one or more sensors to obtain partial pressure of oxygen (PO2) levels of a user over a period of time. The user device provides previous PO2 levels to a personalized erythropoiesis model generation computing platform. The computing platform obtains individualized user data for the user indicating or more previous hematocrit and/or hemoglobin measurements for the user. The computing platform determines an individualized erythropoiesis model for the user based on the one or more previous hematocrit and/or hemoglobin measurements and the previous PO2 information, and employs the individualized erythropoiesis model to determine predicted hematocrit and/or hemoglobin measurements. The computing platform performs one or more actions based on the one or more predicted hematocrit and/or hemoglobin measurements.Type: GrantFiled: October 5, 2022Date of Patent: July 23, 2024Assignees: Fresenius Medical Care Holdings, Inc., Fresenius Medical Care Deutschland GmbHInventors: Peter Kotanko, Ulrike Kotanko, Sabrina Casper, David Joerg, Gudrun Schappacher-Tilp, Doris Fuertinger
-
Patent number: 8980541Abstract: An evaluation and preservation solution for human and animal organs, tissues and parts thereof is described, wherein it comprises serum albumin at a concentration of 55-105 g/L, a scavenger and coating compound, preferably dextran compounds and derivatives thereof having essentially the same structure at a concentration of 1-55 g/L weight, and a physiological serum concentration of salts and nutrients in a physiologically acceptable medium.Type: GrantFiled: July 8, 2011Date of Patent: March 17, 2015Assignee: XVIVO Perfusion ABInventor: Stig Steen
-
Patent number: 8748497Abstract: The present invention is directed to a stable fluorocarbon emulsion having a continuous aqueous phase and discontinuous fluorocarbon phase comprising two fluorocarbons and surprisingly demonstrates that perfluorodecyl bromide is as effective in stabilizing perfluorooctyl bromide emulsions of certain concentrations than much more highly concentrated perfluorooctyl bromide/perfluorodecyl bromide emulsions without the significant problems experienced in higher concentrated emulsions such as longer organ retention times, formation of PFDB crystals, larger emulsion particles, manufacturing problems and inability of repeat dosing inherent with higher concentrations of perfluorodecyl bromide.Type: GrantFiled: May 22, 2007Date of Patent: June 10, 2014Assignee: Alliance Pharmaceutical Corp.Inventors: Jeffry Weers, David Klein, Cindy Johnson
-
Patent number: 8673984Abstract: Perfluorocarbon emulsions having a high stability and good oxygen release are disclosed and described. These perfluorocarbon emulsions are typically for use as artificial oxygen carriers. The perfluorocarbon emulsions include a disperse phase of a perfluorocarbon and an emulsion stabilizer, and continuous phase. The emulsion stabilizer can primarily include a poly(ethylene oxide) block copolymer. These stabilized perfluorocarbon emulsions can be used in liquid and/or hydrogel phases of perfusion bioreactors or various other culture systems to enhance cell viability in thick tissue constructs, or as blood substitutes, although other applications may also be considered.Type: GrantFiled: December 8, 2009Date of Patent: March 18, 2014Assignee: University of Utah Research FoundationInventors: Natalya Y. Rapoport, Glenn D. Prestwich, Russell Morris Condie
-
Patent number: 8465775Abstract: A plurality of artificial red blood cell particles includes each particle of the plurality being substantially monodisperse and each particle having a largest common linear dimension of about 5 ?m to about 10 ?m. The particles can also have a modulus configured such that a particle of the plurality of particles can pass through a tube having an inner diameter of less than about 3 ?m.Type: GrantFiled: July 27, 2007Date of Patent: June 18, 2013Assignee: The University of North Carolina at Chapel HillInventors: Joseph M. DeSimone, Edward T. Samulski
-
Patent number: 8449866Abstract: This disclosure provides, in part, fluorocarbon imaging reagents and formulations for the ex vivo labeling of cells. Labeled cells may be detected in vivo or ex vivo by a nuclear magnetic resonance technique, such as magnetic resonance imaging (MRI) or magnetic resonance spectroscopy (MRS). The disclosure additionally provides methods for using the imaging reagents in a variety of clinical procedures.Type: GrantFiled: March 6, 2012Date of Patent: May 28, 2013Assignee: Carnegie Mellon UniversityInventor: Eric T. Ahrens
-
Patent number: 8147806Abstract: The disclosure provides, in part, fluorocarbon imaging reagents and formulations for the ex vivo labeling of cells. Labeled cells may be detected in vivo or ex vivo by a nuclear magnetic resonance technique, such as magnetic resonance imaging (MRI) or magnetic resonance spectroscopy (MRS). The disclosure additionally provides methods for using the imaging reagents in a variety of clinical procedures.Type: GrantFiled: January 11, 2005Date of Patent: April 3, 2012Assignee: Carnegie Mellon UniversityInventor: Eric T. Ahrens
-
Patent number: 8013022Abstract: Disclosed is a multi-compartment medical device useful in the storage, processing and extended shelf life of perishable products, especially pharmaceutical, food and biological products. Particular biological materials processed according to the present methods are human blood and blood products (RBCs). Also disclosed are processes for preserving food, pharmaceutical and biological products for long-term storage and extended shelf life employing a process that reduces the hydration level of the material to less than native hydration levels of the specific product. The invention further provides stabilized biological products, such as in the form of glassified beads, prepared using a two-phase system according to the described processes that may be rehydrated and prepared for clinical use, and having essentially no loss of biological and/or pharmacological activity.Type: GrantFiled: April 27, 2007Date of Patent: September 6, 2011Inventors: Joseph DeAngelo, David Needham, Carroll Jones
-
Patent number: 7521417Abstract: A process is disclosed for the preparation of an essentially tetramer-free, substantially stroma-free, polymerized, pyridoxylated hemoglobin. Also disclosed is an essentially tetramer-free, substantially stroma-free, polymerized, pyridoxylated hemoglobin product capable of being infused into human patients in an amount of up to about 5 liters.Type: GrantFiled: January 10, 2008Date of Patent: April 21, 2009Assignee: Northfield Laboratories, Inc.Inventors: Richard E. DeWoskin, Marc D. Doubleday
-
Patent number: 7468191Abstract: The present invention provides a method of making a FC emulsion. The method comprises mixing an FC immiscible hydrophilic liquid and a solid emulsifying agent by agitation at a temperature elevated above the phase transition temperature of the emulsifying agent and below the boiling temperature of the FC immiscible hydrophilic liquid, and adding FC to the mixture of step (a) and agitating at the elevated temperature to disperse droplets of FC in the FC immiscible hydrophilic liquid to form the FC emulsion. The invention also provides another method of making an FC emulsion, which does not require a solid emulsifying agent.Type: GrantFiled: May 8, 2006Date of Patent: December 23, 2008Assignee: TherOx, Inc.Inventors: Li-Chien Hsu, Jeffrey L. Creech, Paul J. Zalesky, Margaret A. Kivinski
-
Patent number: 7411044Abstract: A substantially tetramer free hemoglobin solution and a method for producing a substantially tetramer free hemoglobin solution. The method includes polymerizing a solution of hemoglobin, treating the polymerized hemoglobin solution to partially degrade the polymer to tetramer and removing tetramer from the hemoglobin solution.Type: GrantFiled: August 24, 2006Date of Patent: August 12, 2008Assignee: Northfield Laboratories, Inc.Inventors: Anthony Avella, Richard DeWoskin, Marc Doubleday
-
Patent number: 7357937Abstract: A stable FC emulsion is described. The FC emulsion of the present invention comprises a continuous FC immiscible hydrophilic liquid phase and a dispersed phase comprising FC suspended as droplets within the continuous phase. The emulsion further comprises an emulsifying agent and a stabilizing agent. The stabilizing agent of the present invention reduces the ability of the FC droplets to move within the continuous phase. The present invention also provides a method of making a FC emulsion. The method comprises mixing an FC immiscible hydrophilic liquid and a solid emulsifying agent by agitation at a temperature elevated above the phase transition temperature of the emulsifying agent and below the boiling temperature of the FC immiscible hydrophilic liquid, and adding FC to the mixture of step (a) and agitating at the elevated temperature to disperse droplets of FC in the FC immiscible hydrophilic liquid to form the FC emulsion.Type: GrantFiled: September 24, 2002Date of Patent: April 15, 2008Assignee: TherOx, Inc.Inventors: Li-Chien Hsu, Jeffrey L. Creech, Paul J. Zalesky, Margaret A. Kivinski
-
Patent number: 7297689Abstract: Carbonyl compounds generated and accumulated in the peritoneal dialysate can be inactivated or eliminated by a carbonyl compound-trapping agent such as aminoguanidine. Carbonyl compounds generated during sterilization and storage of the peritoneal dialysate can be eliminated by pre-contacting with the trapping agent. Further, it is possible to eliminate carbonyl compounds transferred from the blood to the peritoneal cavity of the patient during peritoneal dialysis treatment, by adding the trapping agent to the peritoneal dialysate or by circulating the fluid through a carbonyl compound-trapping cartridge. Intraperitoneal protein modification by carbonyl compounds is inhibited by the present invention, thereby sufficiently reducing peritoneal disorders associated with peritoneal dialysis treatment.Type: GrantFiled: March 29, 2005Date of Patent: November 20, 2007Assignees: Tokai University Educational SystemInventor: Toshio Miyata
-
Patent number: 7291592Abstract: Methods for treating a mammal suffering from massive blood loss comprising administering to the mammal a polymerized hemoglobin solution.Type: GrantFiled: October 3, 2003Date of Patent: November 6, 2007Assignee: Northfield Laboratories, Inc.Inventors: Steven Gould, Richard DeWoskin, Marc Doubleday, George Hides
-
Patent number: 7135553Abstract: A substantially tetramer free hemoglobin solution and a method for producing a substantially tetramer free hemoglobin solution. The method includes polymerizing a solution of hemoglobin, treating the polymerized hemoglobin solution to partially degrade the polymer to tetramer and removing tetramer from the hemoglobin solution.Type: GrantFiled: January 29, 2004Date of Patent: November 14, 2006Assignee: Northfield Laboratories, Inc.Inventors: Anthony Avella, Richard DeWoskin, Marc Doubleday
-
Patent number: 7129329Abstract: The present invention provides an isolated archael and bacterial heme binding protein which reversibly binds oxygen with a low affinity. The heme binding protein may be utilized as a blood substitute. The invention also provides a method for controlled storage of oxygen by contacting a bacterial heme binding protein with oxygen allowing the protein to bind and store oxygen. The also provides methods to sense gaseous ligands using the heme binding protein. In other embodiments, the invention provides chimeric proteins having a heme-binding domain of an isolated heme binding archael bacterial protein and a heterologous signaling domain.Type: GrantFiled: December 6, 1999Date of Patent: October 31, 2006Assignee: University of HawaiiInventors: Maqsudul Alam, Randy Larsen
-
Patent number: 7101846Abstract: Compositions, and methods of use thereof, for use as blood substitute products comprise aqueous mixtures of oxygen-carrying and non-oxygen carrying plasma expanders and methods for the use thereof. The oxygen-carrying component may consist of any hemoglobin-based oxygen carrier, while the non-oxygen carrying plasma expander my consist of any suitable diluent.Type: GrantFiled: August 11, 2004Date of Patent: September 5, 2006Assignee: The Regents of the University of CaliforniaInventor: Robert M. Winslow
-
Patent number: 6919326Abstract: Carbonyl compounds generated and accumulated in the peritoneal dialysate can be inactivated or eliminated by a carbonyl compound-trapping agent such as aminoguanidine. Carbonyl compounds generated during sterilization and storage of the peritoneal dialysate can be eliminated by pre-contacting with the trapping agent. Further, it is possible to eliminate carbonyl compounds transferred from the blood to the peritoneal cavity of the patient during peritoneal dialysis treatment, by adding the trapping agent to the peritoneal dialysate or by circulating the fluid through a carbonyl compound-trapping cartridge. Intraperitoneal protein modification by carbonyl compounds is inhibited by the present invention, thereby sufficiently reducing peritoneal disorders associated with peritoneal dialysis treatment.Type: GrantFiled: August 23, 1999Date of Patent: July 19, 2005Assignees: Tokai University Educational SystemInventor: Toshio Miyata
-
Patent number: 6914127Abstract: An acellular red blood cell substitute which comprises an essentially tetramer-free, substantially stroma-free, cross-linked, polymerized, pyridoxylated hemoglobin and a nontoxic, pharmaceutically acceptable carrier, its use and a process for preparing said acellular red blood cell substitute.Type: GrantFiled: January 21, 2003Date of Patent: July 5, 2005Inventors: Lakshman R. Sehgal, Richard E. De Woskin, Gerald S. Moss, Steven A. Gould, Arthur L. Rosen, Hansa Sehgal
-
Patent number: 6911427Abstract: S-nitrosohemoglobin (SNO-Hb) can be formed by reaction of Hb with S-nitrosothiol and by other methods described herein which do not result in oxidation of the heme Fe. Other methods can be used which are not specific only for thiol groups, but which nitrosate Hb more extensively, and may produce polynitrosated metHb as a product or intermediate product of the method. SNO-Hb in its various forms and combinations thereof (oxy, deoxy, met; specifically S-nitrosylated, or nitrosated or nitrated to various extents) can be administered to an animal or human where it is desired to oxygenate, to scavenge free radicals, or to release NO+ groups to tissues. Thiols and/or NO donating agents can also be administered to enhance the transfer of NO+ groups. Examples of conditions to be treated by SNO-Hbs or other nitrosated or nitrated forms of Hb include ischemic injury, hypertension, angina, reperfusion injury and inflammation, and disorders characterized by thrombosis.Type: GrantFiled: June 12, 1997Date of Patent: June 28, 2005Assignee: Duke UniversityInventor: Jonathan S. Stamler
-
Patent number: 6884773Abstract: Diseases which can be ameliorated by delivery of NO to tissues affected by the disease can be treated by administration of nitrosyl-heme-containing donors of NO, including nitrosylhemoglobin. Nitrosylhemoglobin can be made by the reaction of NO with hemoglobin under certain conditions in which the NO:hemoglobin ratio is critical, and is converted to SNO-Hb under physiological conditions.Type: GrantFiled: February 6, 1997Date of Patent: April 26, 2005Assignee: Duke UniversityInventors: Jonathan S. Stamler, Andrew J. Gow
-
Patent number: 6855691Abstract: Nitric oxide (NO) interacts with hemoglobin (Hb) at its metal centers, whereas S-nitrosothiols (RSNOs) can donate the NO group to ?93 cysteine residues, thereby shielding the NO functionality from heme inactivation. S-nitrosylation of Hb is under the allosteric control of oxygen and the oxidation state of heme. NO group release from S-nitrosohemoglobin (SNO-Hb) is further facilitated by intracellular low molecular weight thiols, forming RSNOs which can be exported from the erythrocyte to regulate blood pressure. Hence, a dynamic cycle is established in which S-nitrosylation of Hb is initiated in the lung following oxygenation of red blood cells and is completed by SNO-Hb metabolism during arterial-venous transit. SNO-Hb can be formed by reaction of Hb with S-nitrosothiol. This procedure avoids oxidation of the heme.Type: GrantFiled: March 15, 1996Date of Patent: February 15, 2005Assignee: Duke UniversityInventor: Jonathan S. Stamler
-
Patent number: 6767544Abstract: The present invention provides for methods of treating cardiovascular diseases in a mammal. The methods include a step of administering an effective amount of a botulinum toxin directly to a blood vessel of a mammal thereby treating a cardiovascular disease.Type: GrantFiled: April 1, 2002Date of Patent: July 27, 2004Assignee: Allergan, Inc.Inventors: Gregory F. Brooks, Stephen Donovan
-
Patent number: 6599878Abstract: The present invention provides superoxygenating compositions that comprise hemoglobin and guanosine 3′:5′-cyclic monophosphate (cyclic GMP) generating compounds, and methods for treatment of diseases or medical conditions which utilize the superoxygenating compositions as biocolloids, i.e. hemodiluents, blood substitutes, plasma expanders, or resuscitative fluids. The cardiac output-increasing compositions comprise a simple mixture of hemoglobin and the cyclic GMP generating compounds or hemoglobin physically or chemically coupled to the cyclic GMP generating compounds. The invention also provides time-controlled superoxygenating compositions of hemoglobin and cyclic GMP generating compounds that would be used for treatment of specific diseases or medical conditions requiring time-dependent use of biocolloids, i.e. hemodiluents, blood substitutes, plasma expanders, or resuscitative fluids.Type: GrantFiled: November 30, 2000Date of Patent: July 29, 2003Inventor: Michael W. Rooney
-
Patent number: 6583113Abstract: Nitrosylation of proteins and amino acid groups enables selective regulation of protein function, and also endows the proteins and amino acids with additional smooth muscle relaxant and platelet inhibitory capabilities. Thus, the invention relates to novel compounds achieved by nitrosylation of protein thiols. Such compounds include: S-nitroso-t-PA, S-nitroso-cathepsin; S-nitroso-lipoprotein; and S-nitroso-immunoglobulin. The invention also relates to therapeutic use of S-nitroso-protein compounds for regulating protein function, cellular metabolism and effecting vasodilation, platelet inhibition, relaxation of non-vascular smooth muscle, and increasing blood oxygen transport by hemoglobin and myoglobin. The compounds are also used to deliver nitric oxide in its most bioactive form in order to achieve the effects described above, or for in vitro nitrosylation of molecules present in the body.Type: GrantFiled: April 16, 2001Date of Patent: June 24, 2003Assignee: Brigham and Women's HospitalInventors: Johnathan Stamler, Joseph Loscalzo
-
Patent number: 6562872Abstract: An emulsion of perfluoroorganic compounds (PFOC) comprises a rapidly eliminable perfluorocarbon (PFC) and a slowly eliminable perfluorinated cyclic tertiary amine, perfluoro-N-4-(methylcyclohexyl)-piperidine and additionally comprises not less then three rapidly eliminable and three slowly eliminable PFOC admixtures with the critical temperature of dissolution in hexane (CTDH) close to that of main PFOC. The PFOC emulsion is stabilized with a polyoxyethylene-polyoxypropylene copolymer having low viscosity to provide high dynamic oxygen capacity and enhancing oxygen delivery to tissues. To prepare the emulsion the stabilizing agent is heated up to 75° C., all components are saturated with carbon dioxide gas to minimize the reactogenicity in intravessel injection as a means of compensation for mass blood loses, perfusion of organs cut of blood flow, treating air-and fat embolism, obliterating vascular injuries of extremities and preventing toxic injuries caused by various xenobiotics.Type: GrantFiled: May 7, 2001Date of Patent: May 13, 2003Assignee: Otkrytoe Aktsionernoe Obschestvo Naucho-Proizvodstven-Naya Firma “Perftoran”Inventors: Evgeny Iliich Maevsky, Genrikh Romanovich Ivanitsky, Kirill Nikolaevich Makarov, Galina Mikhailovna Kulakova, Vladimir Viktorovich Arkhipov, Viktor Vasilievich Moroz, Ljudmila Nikolaevna Starovoitova, Raisa Yakovlevna Senina, Sergei Jurievich Pushkin, Albina Ivanovna Ivashina
-
Patent number: 6552173Abstract: An acellular red blood cell substitute which comprises an essentially tetramer-free, substantially stroma-free, cross-linked, polymerized, pyridoxylated hemoglobin and a nontoxic, pharmaceutically acceptable carrier, its use and a process for preparing said acellular red blood cell substitute.Type: GrantFiled: November 27, 2001Date of Patent: April 22, 2003Assignee: Northfield Laboratories, Inc.Inventors: Lakshman R. Sehgal, Richard E. De Woskin, Gerald S. Moss, Steven A. Gould, Arthur L. Rosen, Hansa Sehgal
-
Patent number: 6498141Abstract: A process is disclosed for the preparation of an essentially tetramer-free, substantially stroma-free, polymerized, pyridoxylated hemoglobin. Also disclosed is an essentially tetramer-free, substantially stroma-free, polymerized, pyridoxylated hemoglobin product capable of being infused into human patients in an amount of up to about 5 liters.Type: GrantFiled: May 10, 1999Date of Patent: December 24, 2002Assignee: Northfield Laboratories, Inc.Inventors: Richard E. DeWoskin, Marc D. Doubleday
-
Patent number: 6492103Abstract: A unified solution system for organ and/or tissue preservation and/or hypothermic blood substitution can be used to prepare multiple solutions for use in various stages of organ procurement, preservation and transplantation and bloodless surgery procedures.Type: GrantFiled: July 28, 2000Date of Patent: December 10, 2002Assignee: Organ Recovery Systems, Inc.Inventor: Michael J. Taylor
-
Patent number: 6432918Abstract: Compositions, and methods of use thereof, for use as blood substitute products comprise aqueous mixtures of oxygen-carrying and non-oxygen carrying plasma expanders and methods for the use thereof. The oxygen-carrying component may consist of any hemoglobin-based oxygen carrier, while the non-oxygen carrying plasma expander my consist of any suitable diluent.Type: GrantFiled: April 5, 2000Date of Patent: August 13, 2002Assignee: The Regents of the University of CaliforniaInventor: Robert M. Winslow
-
Patent number: 6369118Abstract: A biocompatible emulsifier for forming stable emulsions is disclosed. The emulsifier is particularly useful for emulsions of biological fluids, such as artificial blood, and for emulsions as drug delivery vehicles.Type: GrantFiled: September 9, 1998Date of Patent: April 9, 2002Assignee: University of PittsburghInventor: Toby J. Chapman
-
Publication number: 20020025343Abstract: A process is disclosed for the preparation of an essentially tetramerfree, substantially stromafree, polymerized, pyridoxylated hemoglobin. Also disclosed is an essentially tetramerfree, substantially stromafree, polymerized, pyridoxylated hemoglobin product capable of being infused into human patients in an amount of up to about 5 liters.Type: ApplicationFiled: May 10, 1999Publication date: February 28, 2002Inventors: RICHARD E. DE WOSKIN, MARC D. DOUBLEDAY
-
Patent number: 6323320Abstract: An acellular red blood cell substitute which comprises an essentially tetramer-free, substantially stroma-free, cross-linked, polymerized, pyridoxylated hemoglobin and a nontoxic, pharmaceutically acceptable carrier, its use and a process for preparing said acellular red blood cell substitute.Type: GrantFiled: August 14, 2000Date of Patent: November 27, 2001Assignee: Northfield Laboratories, Inc.Inventors: Lakshman R. Sehgal, Richard E. De Woskin, Gerald S. Moss, Steven A. Gould, Arthur L. Rosen, Hansa Sehgal
-
Patent number: 6251437Abstract: A hemodialysis acid concentrate which includes, before mixing, sodium chloride powder and sometimes dextrose powder as a powder component, and a liquid component which contains some or all of the following: potassium chloride, magnesium chloride, sodium chloride, dextrose, calcium chloride, and an acid from the group lactic acid, acetic acid, and citric acid. The liquid and powder components are added to a specified volume of water to make a final acid concentrate. The individual components are easily inspected for quality control and the shipping weight is greatly reduced compared to conventional liquid acid concentrates.Type: GrantFiled: July 13, 1999Date of Patent: June 26, 2001Assignee: Minntech CorporationInventor: LeRoy J. Fischbach
-
Patent number: 6204296Abstract: Storage stable fluorocarbon emulsions having a continuous aqueous phase and a discontinuous fluorocarbon phase, in which the fluorocarbon phase comprises a major amount of a first fluorocarbon or fluorocarbon mixture, and a minor amount of a second fluorocarbon or fluorocarbon mixture, in which the second fluorocarbon has a molecular weight greater than that of the first fluorocarbon and the second fluorocarbon includes a lipophilic moiety in its structure, whereby the second fluorocarbon serves to promote particle size stability in the emulsion while simultaneously providing favorably short organ retention times when administered to animals in vivo.Type: GrantFiled: March 5, 1999Date of Patent: March 20, 2001Assignee: Alliance Pharmaceutical Corp.Inventors: Jeffry Greg Weers, David Henry Klein, Cindy Shizuko Johnson
-
Patent number: 6197745Abstract: S-nitrosothiols (RSNOs) can donate the NO group to the &bgr;93 cysteine residues of hemoglobin (Hb) without inactivating the heme. S-nitrosylation of Hb is under the allosteric control of oxygen and the oxidation state of heme. NO group release from S-nitrosohemoglobin (SNO-Hb) is further facilitated by intracellular low molecular weight thiols, forming RSNOs which can be exported from the erythrocyte to regulate blood pressure and platelet activation. SNO-Hb can be formed by reaction of Hb with S-nitrosothiol. This procedure avoids oxidation of the heme. Other methods can be used which are not specific only for thiol groups, but which nitrosate Hb more extensively, and may produce polynitrosated metHb as a product or intermediate product of the method.Type: GrantFiled: June 20, 1996Date of Patent: March 6, 2001Assignee: Duke UniversityInventor: Jonathan S. Stamler
-
Patent number: 6187744Abstract: Methods for time-regulated prophylaxis or treatment of animals or humans for limited circulatory oxygen delivery induced by the inhibitory effects of a plasma-borne hemoglobin-based material on L-arginine→nitric oxide→cGMP pathways in the arteriovenous vasculature. The properties of the invention restore and increase circulatory oxygen delivery by increasing circulatory flow of the blood-hemoglobin-based material through selective activation of L-arginine→nitric oxide→cGMP pathways in the arterial rather than venous vasculature. A method of the invention utilizes oxygen-carrying biocolloid compositions that consist of a hemoglobin-based material and a guanosine 3′:5′-cyclic monophosphate (cGMP) generating entity, for treatment of animals and humans in need thereof for diseases or medical conditions which utilize the biocolloids as hemodiluents, blood substitutes, plasma expanders, or resuscitative fluids.Type: GrantFiled: June 7, 1995Date of Patent: February 13, 2001Inventor: Michael W. Rooney
-
Patent number: 6117838Abstract: A method of treating a mammal suffering from hypotension by administering intermolecularly- or intramolecularly-crosslinked stroma-free hemoglobin to the mammal.Type: GrantFiled: June 2, 1998Date of Patent: September 12, 2000Assignee: Baxter International, Inc.Inventor: Robert J. Przybelski
-
Patent number: 6113919Abstract: Fluorocarbon emulsions comprising a stabilizing, particle size controlling fluorophilic/hydrophilic compound which can have the formulaR.sub.F.sup.1 --W--R.sub.H.sup.1 (I)whereinR.sub.F.sup.1 is a linear, branched or cyclic C.sub.2-14 fluorocarbon group;R.sub.H.sup.1 is a linear, branched or cyclic C.sub.2-18 saturated or unsaturated hydrocarbon group; andW is absent or is a bivalent species chosen from the group consisting of --O--, --S--, or various fluorinated structures. Use of the fluorophilic/lipophilic compound in the dispersions of the invention provides stable particle size and efficient emulsification. The dispersions of the invention can comprise biologically useful additive and can be used for various purposes, as oxygen carriers, contrast agents, or diagnostic agents.Type: GrantFiled: June 7, 1995Date of Patent: September 5, 2000Assignee: Alliance Pharmaceutical Corp.Inventors: Jean G. Reiss, Michele Postel, Luis Sole-Violan, Marie-Pierre Krafft, Chantal Cornelus
-
Patent number: 6090779Abstract: Therapeutic treatment of septic shock comprises administering to an animal stroma-free hemoglobin, typically at a dose ranging from the least amount effective to increase perfusion, up to a dosage of about 2500 milligrams kilograms per of body weight.Type: GrantFiled: March 18, 1997Date of Patent: July 18, 2000Assignee: Baxter International, Inc.Inventors: Robert J. Przybelski, Kenneth E. Burhop
-
Patent number: 6072072Abstract: The present invention provides a chemically modified form of hemoglobin that is stabilized and can efficiently bind and release oxygen. In addition the chemically modified hemoglobin may be polymerized to increase its molecular weight and increase its stability so that it will have a longer half life in the circulatory system and may be used as a stable oxygen transport mediator which is useful as the basis of a blood substitute.Type: GrantFiled: March 22, 1999Date of Patent: June 6, 2000Assignee: Montefiore Medical CenterInventors: Iraj Lalezari, Parviz Lalezari
-
Patent number: 6054427Abstract: Compositions, and methods of use thereof, for use as blood substitute products comprise aqueous mixtures of oxygen-carrying and non-oxygen carrying plasma expanders and methods for the use thereof. The oxygen-carrying component may consist of any hemoglobin-based oxygen carrier, while the non-oxygen carrying plasma expander my consist of any suitable diluent.Type: GrantFiled: February 27, 1998Date of Patent: April 25, 2000Assignee: The Regents of the University of CaliforniaInventor: Robert M. Winslow
-
Patent number: 6046161Abstract: A method for increasing perfusion in a mammal suffering from cardiogenic shock by administering a perfusion-increasing effective amount of intermolecularly- or intramolecularly-crosslinked stroma-free hemoglobin to the mammal.Type: GrantFiled: February 27, 1998Date of Patent: April 4, 2000Assignee: Baxter International, Inc.Inventor: Robert J. Przybelski
-
Patent number: 6022850Abstract: A method for increasing perfusion in a mammal suffering from stroke by admninistering a perfusion-increasing effective amount of intermolecularly- or intramolecularly-crosslinked stroma-free hemoglobin to the mammal.Type: GrantFiled: February 27, 1998Date of Patent: February 8, 2000Assignee: Baxter International, Inc.Inventor: Robert J. Przybelski
-
Patent number: 6020308Abstract: The present invention is directed to the use of an inhibitor of NO activity, such as a nitric oxide scavenger or an NO synthase inhibitor, as as an adjunct to treatment of inappropriate tissue vascularization disorders.Type: GrantFiled: July 31, 1998Date of Patent: February 1, 2000Assignees: Duke University, North Carolina State University, Apex Bioscience, Inc.Inventors: Mark W. Dewhirst, Robert E. Meyer, Joseph Bonaventura, Joseph DeAngelo
-
Patent number: 5994509Abstract: A process for preparing solutions of hemoglobin hyperpolymers by fractionating hemoglobin hyperpolymers having a nonuniform molecular weight distribution according to molecular weight using a polyhydroxy compound to precipitate different fractions of hemoglobin hyperpolymers, wherein each fraction has a different but more uniform molecular weight distribution as compared to the starting hemoglobin hyperpolymers. Preferably, the polyhydroxy compound is a polyalcohol, especially polyethylene glycol.Type: GrantFiled: April 8, 1998Date of Patent: November 30, 1999Assignee: Sanguibiotech AGInventor: Wolfgang Barnikol
-
Patent number: 5989918Abstract: A method for analyzing the ADME/PK properties of a mixture of compounds is (1) perfusing an animal or organ with a perfluorocarbon emulsion blood substitute, (2) administering the mixture of test compounds, (3) withdrawing an aliquot of the perfusate, (4) disrupting the emulsion, and (5) analyzing the aqueous phase of the perfusate for the concentration of test compounds.Type: GrantFiled: August 28, 1997Date of Patent: November 23, 1999Assignee: Chiron CorporationInventors: Corine M. Dietz, Jacqueline A. Gibbons, Eric W. Taylor
-
Patent number: RE38459Abstract: An injectable physiologically acceptable aqueous phase fluorocarbon emulsion, which has substantially no free fluorocarbon, has an excellent stability is prepared by a process of the invention. Typically, more than about 99.8 wt. % of the fluorocarbon remains in the size range of about 0.2 to 0.4 microns even after being stored at room temperature for one year or more in sealed containers under a non-oxidizing atmosphere. The emulsion is useful in medical applications, for example, coronary angioplasty, cancer therapy, among others.Type: GrantFiled: January 21, 1999Date of Patent: March 9, 2004Assignee: Thomas Jefferson UniversityInventors: Stuart Raynolds, Robert H. Dettre