摘要:
The invention relates to an inexpensive and easy to use method of visualizing an arterial circulation, using biodegradable microspheres which are permeated with an imaging energy absorbent contrast material, such as an X-ray absorbent material, which enables the diagnosis of pulmonary embolism. The microspheres may be comprised of a variety of materials, including human albumin, and may be dyed with a number of X-ray absorbent materials, or other imaging energy absorbent materials. The microspheres are injected into the bloodstream at a particular location such that they travel through the desired circulation, e.g. an arterial circulation and ultimately become lodged in the capillaries of a tissue of interest. Upon exposure of the arterial circulation to X-rays, blood vessels therein containing the microspheres will absorb the X-rays, causing them to show on a developed X-ray film in contrast to other blood vessels and body tissue which do not contain the microspheres that transmit the X-rays. The microspheres are designed to dissolve into the bloodstream within fifteen to thirty minutes after their introduction, the X-ray dye or other contrast material being ultimately excreted from the body via the urine or metabolized by the liver.
摘要:
A kit for preventing or treating arterial dysfunction resulting from an angioplasty procedure and particularly, in myocardial angioplasty procedures in human beings. The kit provides the materials necessary to introduce a selected amount of an intraarterial prostaglandin compound into an artery, such as a coronary artery, in which an angioplasty procedure is to occur and an intravenous prostaglandin compound. The prostaglandin compound will provide cyto-protection and provide antithrombotic effects and antiplatelet effects and antispasmatic effects. A composition is also provided for reducing dysfunction in angioplasty procedures and comprises a selected amount of a carrier and a prostaglandin compound carried in a specified amount and which carrier does not alter the prostaglandin compound and releases the prostaglandin compound at a rate sufficient to dilate blood vessels to thereby produce the required efficacy. The kit is a prepackaged combination of components which provides for the complete administration of the prostaglandin compound before, during and after the angioplasty procedure.
摘要:
A process for making a volumetric determination of the quantity of a fluid, such as a liquid, by evaluation of a small sample of that fluid. The method comprises labeling microspheres with a non-radioactive substance and introducing the labeled microspheres into a body of fluid for which a determination is to be made. The microspheres are allowed to disperse in the body of fluid. Thereafter, a sample of the fluid which is of know or measurable volume, is selected. The number of microspheres present in the sample is then determined, from which a calculation of the volumetric measurement of the fluid may be made. The process is also adaptable to measuring the flow rate of a moving stream of fluid, since volume is one of the parameters of flow rate, and is also adaptable to determine the percentages of fluid components present in a mixture thereof.
摘要:
A method and a composition for accumulating and the binding of food fats in an animal body gastrointestinal tract. The method and composition rely upon non-biodegradable collagen particles, such as microspheres, having a size of at least two microns and a fat receptor, such as bile, capable of having food fat adhered thereto on the surface of the particles. These particles are sufficiently large so that they do not pass through the surface mucosa of the gastrointestinal tract and permit the particles with the food fat to pass through the gastrointestinal tract and out of the body through animal excretion.
摘要:
A method for reducing dysfunction in angioplasty procedures and particularly, in myocardial angioplasty procedures in human beings is desired. The method involves the introduction of a selected amount of intra-arterial prostaglandin compound into an artery, such as a coronary artery, in which an angioplasty procedure is to occur. The prostaglandin compound will provide cyto-protection and provide antithrombotic effects and antiplatelet effects and antispasmatic effects. The prostaglandin compound is administered in a pharmacological amount, that is, an amount substantially greater than the prostaglandin which would be generated by a normal myocardial artery when insulated and thus, constitutes an administration substantially greater than an amount which would be administered in a replacement therapy. A composition is also provided for reducing dysfunction in angioplasty procedures and comprises a selected amount of a carrier and a prostaglandin compound carried in a specified amount and which carrier does not alter the prostaglandin compound and releases the prostaglandin compound at a rate sufficient to dilate blood vessels to thereby produce the required efficacy. A prepackaged combination of components provides for the complete administration of the prostaglandin compound before, during and after the angioplasty procedure.
摘要:
A method for the treatment of erectile dysfunction comprises instilling intra meatally an aqueous solution containing prostaglandin-containing liposomes and a detergent for lysing the liposomes. A pharmaceutical composition for treating erectile dysfunction comprises a two-component system. The first component comprises a predetermined amount of lyophilized prostaglandin-containing liposomes. The second component comprises a predetermined volume of an aqueous solution containing a detergent, preferably PEG(9) octylphenyl ether, for lysing the liposomes. Dissolution of the lyophilized prostaglandin-containing liposomes yields a liquid composition suitable for application to the penis, preferably intra meatally, to effect erection.
摘要:
A device and methods for the real-time monitoring of stem cells in a stem cell transplant. The device comprises a linear member and particle detection device configured to occupy the lumen of a catheter while the catheter is in place to administer a stem cell transplant to a delivery site in the body of a patient. Monitoring of the stem cells permits the device to provide signals to a computer processor for the determination of one or more characteristics of stem cells in the stem cell transplant.
摘要:
A method is provided for inducing a systemic immune response to an antigen selected from hepatitis B and hepatitis C antigens in a mammal. The method comprises orally administering lyophilized multilamellar liposomes containing the antigen. The liposomes have a size of from 20 nm to 20 microns. The antigen-containing liposomes are absorbed in the Peyer's patches of the gut. Sufficient antigen-containing liposomes are taken up by macrophages in the Peyer's patches to induce a systemic immune response to the antigen.
摘要:
A safe and inexpensive method of measuring blood flow in experimental animals using non-radioactively labeled microspheres is provided. The microspheres may be comprised of a variety of materials, including latex and agarose, and may be labeled with colored dyes or by linkage to enzymes, plant enzymes being preferred because they do not occur naturally in an animal's system. After injection and circulation of the microspheres throughout the animal's system, blood flow to particular tissue may be measured by counting the number of microspheres in the tissue sample, the initial number of microspheres in the animal's blood stream having been measured shortly after injection. In the case of microspheres labeled with colored dyes, the spheres may be counted in tissue either after separation from the tissue or while still trapped in the tissue's capillaries. Techniques for separating the microspheres from blood and tissue are also provided.
摘要:
A medicament for treating cystitis and a method of treatment are provided. An agent to repair the damaged glycosaminoglycan (“GAG”) layers lining the urothelium, noted in cystitis, such as pentosan polysulfate, hyaluronic acid, chondroitin, etc., is provided in a liposomal carrier. Cystitis is treated by intravesically administering to a patient a therapeutically effective dose of the medicament.