Other

Hemosphere, Inc.

Ptlnv, LLC, Series Four (4)

Ptlnv, LLC, Series Three (3)

Richard C K Yen

A product and method of using albumin nanoparticles for stimulating bone heal by augmenting the function or effectiveness of stem cells or precursor cells in vivo. An albumin nanoparticle suspension containing submicron albumin spheres is prepared, with the albumin spheres being capable of augmenting a function and effectiveness of stem cells or precursor cells in vivo for healing bone fractures. A predetermined amount of the albumin nanoparticle suspension is administered to a patient after an onset of a bone fracture or bone injury. A function of the stem cells or precursor cells are augmented or improved by the albumin spheres to repair cellular or tissue damage associated with a fracture bone, resulting in decreasing mortality or morbidity of the patient. The albumin spheres can be bound with fibrinogen molecules in vitro or in vivo.

Nanospheres for bone fracture

The present invention relates to a product and method of using albumin nanoparticles for augmenting the function or effectiveness of stem cells or precursor cells in vivo. An albumin nanoparticle suspension containing submicron albumin spheres is prepared, with the albumin spheres being capable of augmenting a function and effectiveness of stem cells or precursor cells in vivo. A predetermined amount of the albumin nanoparticle suspension is administered to a patient before or after an onset of at least one condition. The condition is one that can benefit from a healing effect of the stem cells or precursor cells. A function of the stem cells or precursor cells are augmented or improved by the albumin spheres to repair cellular or tissue damage, resulting in decreasing mortality or morbidity of the patient. The albumin spheres can be bound with fibrinogen molecules in vitro or in vivo.

Albumin nanoparticles to augment stem cell function in vivo

A method of treating radiation-induced skin toxicity or skin ulcers with nanoparticles after exposure to ionizing radiation and after an onset of radiation-induced skin toxicity or a radiation-induced skin ulcer by administering intravenously a suspension including fibrinogen-coated albumin nanospheres to a patient. A concentration of the suspension being sufficient to at least one of promote healing of the skin toxicity or reduce a size of the skin ulcer. The suspension can include fibrinogen-coated albumin nanospheres, sorbitol and/or caprylate. The suspension can be utilized for treating a patient to reduce an amount of blood loss in an organ of the patient or for treating a patient to mobilize stem cells or progenitor cells to accelerate healing of a wound.

Nanoparticles for the therapeutic treatment of radiation-induced skin ulcers

The present invention relates to a product, method of making and method of using an albumin sphere suspension for controlling bleeding of a non-thrombocytopenic patient before, during and after surgery. An albumin sphere suspension containing submicron albumin spheres is prepared, with the albumin spheres being capable of controlling bleeding in vivo. The suspension is prepared by mixing at near freezing temperatures an albumin solution, a sub-stabilizing concentration of glutaraldehyde solution and an alcohol solution containing a stabilizing concentration of glutaraldehyde. The mixed suspension is warmed, and glycine and sorbitol being added. Lyophilization of the suspension can be performed for stabilization of the suspension.

Albumin nanosphere preparations to control bleeding from surgical operations

The present invention is associated with a method of evaluating platelet function in vivo using skin-irradiation and nanoparticle radiation treatment. The present invention in the recovery of radiation skin injury suggests that radiation skin injury can be used as a substitute model to evaluate platelet substitute products instead of measuring bleeding times. Submicron nanoparticles and a future platelet treatment product are administered intravenously before and after irradiation to subjects. The resultant radiation skin injury are compared and used to evaluate the effectiveness of the platelet treatment product on platelet function in vivo. The radiation skin injury can serve as a model to evaluate platelet and platelet-substitute products, by replacing bleeding time measurements.

Nanoparticles for the treatment of radiation skin injury

A method of treating a patient who has extravasation of blood from an intravascular compartment to an extravascular compartment. An agent is administered to the patient which mitigates a harmful effect of break-down products of blood at an extravascular site, resulting in the patient having reduced morbidity and mortality. The morbidity and mortality of the patient is further reduced by concomitant administration of a suspension of submicron protein spheres having a molecular weight of ranging from 780 billion Daltons to less than 0.8 billion Daltons.

Therapy to reduce extravasation damage

A submicron protein sphere and method to intravenously treat a patient requiring blood component transfusion. The submicron protein spheres have a size ranging from 1.0 micron to less than 0.1 micron and a molecular weight ranging from 780 billion Daltons to less than 0.8 billion Daltons. The protein spheres have no biologically active molecules added or bound to the protein spheres prior to administering to the patient. The protein used to construct the spheres can be human serum albumin from natural sources or recombinant DNA-derived serum albumin, or other proteins such as gelatin or synthetic polypeptides. However, the protein spheres can bind the various clotting factors including fibrinogen after the spheres have entered the blood stream, binding the necessary additional biologically active molecules supplied in vivo from the patient's own blood, and possibly in vitro.

Submicron particles to decrease transfusion

A method of treating a patient exposed to radiation before the patient is thrombocytopenic, comprising: intravenous infusion of protein spheres at a concentration of the protein spheres sufficient to reduce the morbidity and mortality of the irradiated patient, wherein the protein spheres are formed from soluble proteins without the addition of surfactants or detergents, and the protein spheres spontaneously and directly bind at least one coagulation factor without the aid of other molecules which specifically bind the at least one coagulation factor.

Submicron particles for the treatment of radiation damage in patients

A microscopic protein device and the method of manufacture and the use of such a device for hemostasis. The device, made with biologic material such as serum albumin from a human or animal source, is less than five micron in any one dimension and typically less than one micron in diameter. It does not have any other biological or drug molecules attached to it in vitro. However, the device has properties that allow it to capture, concentrate, carry or bind biomodifying molecules, such as coagulation factor(s), or potentially other drugs, after exposure to plasma in vitro; and possibly in vivo as well. After infusion of said device intravenously inside the body, hemostatic effects can be demonstrated.

Biologic devices for hemostasis

The invention provides a particle comprising fibrinogen bound on the surface of an albumin matrix, wherein said particle is capable of coaggregation with platelet, and of aggregation in a solution containing soluble fibrinogen at a concentration of soluble fibrinogen not capable by it self of formation of a clot upon activation by thrombin.

Fibrinogen-coated particles for therapeutic use

The invention provides compositions comprising microspheres of fibrinogen-coated cross-linked albumin microspheres having a size range of primarily from about 100 to about 5000 nanometers diameter, wherein the composition is substantially free microspheres and microsphere aggregates having a diameter of more than 10 micrometers. At least a portion of the fibrinogen on the surface of the microspheres is covalently attached. The particles of the invention are useful for reducing bleeding time when administered to a human or other animal.

Growing community of inventors

Yorba Linda, CA, United States of America

Richard C K Yen