35 results about "Antiproliferative Drugs" patented technology

A vascular or endoluminal stent is adapted to be implanted in a vessel, duct or tract of a human body to maintain an open lumen at the site of the implant. The sidewall of the open-ended tubular structure of the stent is a base layer of a metal biologically compatible with blood and tissue of the human body. An intermediate metal particle layer of substantial greater radiopacity overlies the base layer, with particles bonded to the base layer and to each other to leave interstices therebetween as a repository for retaining and dispensing drugs or other agents for time release therefrom after the stent is implanted, to assist the stent in maintaining the lumen open. The particles are composed primarily of a noble metal—an alloy of platinum-iridium. The sidewall has holes extending therethrough, and the particle layer resides along the outward facing and inward facing surfaces, and the edges of the through holes and open ends of the sidewall. The larger particles are bonded to surfaces of the sidewall and progressively smaller particles are bonded to those and to each other up to the outer portion of the particle layer. Exposed surfaces of the particle layer are coated with ceramic-like iridium oxide or titanium nitrate, as a biocompatible material to inhibit irritation of tissue at the inner lining of the vessel when the stent is implanted. One or more anti-thrombotic, anti-platelet, anti-inflammatory and/or anti-proliferative drugs are retained in the interstices, together with a biodegradable carrier for time release therefrom. In an alternative embodiment, the intermediate layer is solid and the biodegradable carrier and drugs or agents therein are applied to the surface of the ceramic-like coating. Gene transfer is alternatively used to control tissue proliferation.

The combination of an interleukin-6 (IL-6) antagonist and an antiproliferative drug is described. In its preferred embodiment, the present invention describes the combination of an IL-6 superantagonist, particularly a superantagonist totally incapable of binding gp130 and an antiproliferative drug belonging to the glucocorticoid class (SANT-7 and dexamethasone). The combination according to the present invention has shown surprising synergism in an animal model of multiple myeloma and the ability to overcome the resistance to the antiproliferative drug developed by myeloid cells. The combination according to the present invention is useful for the preparation of a medicament for the treatment of tumours, particularly IL-6-dependent tumours.

This invention is a prosthetic device generally placed on the outside surface of the vessel or graft which then elutes antiproliferative drugs or agents from a drug-eluting matrix material. Methods of perivascular antiproliferative drug administration also are disclosed.

The present invention provides methods and compositions for modulating polyamine pathway activity as a means for ameliorating neurodegenarative disorders. In particular, for ameliorating the symptoms or onset of amyotrophic lateral sclerosis (ALS) by modulating the gene and protein products involved the polyamine pathway, such as by inhibiting the enzyme, ornithine decarboxylase (ODC), involved in the synthesis of the polyamine, putrescine. Compositions and methods are disclosed for inhibiting the polyamine pathway producing lower polyamine levels resulting in a beneficial effect on ALS. This can be accomplished by using modulating agents such as analogs, or polyamine analogs, and antiproliferative drugs. In particular, the polyamine analog N(1),N(11)-diethylnorspermine (DENSPM) is disclosed as a useful modulating agent in the treatment of ALS. Screening assays for pharmacological agents that are capable of decreasing polyamine levels and/or reducing cell proliferation are also disclosed.

A method for using 3D printing technology produces personalized biomimetic drug-eluting coronary stent and the product thereof. The process of manufacturing stent, based on coronary angiography imaging data, measures the diameter of diseased coronary and conducts 3D reconstruction. A personalized stent for each patient according to diameter, length, and morphological characteristics of target vessel that suited to the lesion is produced. The coronary stent is formed from biodegradable poly-L-lactic acid (PLLA) or other materials. The stent is modeled by 3D printing and then coated with polymers carrying antiproliferative drug to reduce restenosis (the polymers is a mixture of antiproliferative drug and PDLLA at a ratio of 1:1). The biomimetic drug-eluting coronary stent produced by 3D printing technology is personalized stent for each patient according to different characteristics of diseased coronary, reduces the incidence of vascular injury, thrombosis, dissection and other complications caused by stent and vessel diameter mismatch.

The present invention provides methods and compositions for modulating polyamine pathway activity as a means for ameliorating neurodegenarative disorders. In particular, for ameliorating the symptoms or onset of amyotrophic lateral sclerosis (ALS) by modulating the gene and protein products involved the polyamine pathway, such as by inhibiting the enzyme, ornithine decarboxylase (ODC), involved in the synthesis of the polyamine, putrescine. Compositions and methods are disclosed for inhibiting the polyamine pathway producing lower polyamine levels resulting in a beneficial effect on ALS. This can be accomplished by using modulating agents such as analogs, or polyamine analogs, and antiproliferative drugs. In particular, the ODC inhibitor difuoromethylornithine (DFMO) is disclosed as a useful pharmacological agent in the modulation and treatment of ALS. Screening assays for pharmacological agents that are capable of decreasing polyamine levels and/or reducing cell proliferation are also disclosed.

The present invention relates to conjugates of a drug and an amino acid or an amino acid derivative or analog, pharmaceutical compositions that include the conjugates and methods of use thereof. In particular, the present invention relates to conjugates of anti-proliferative drugs and asparagine and glutamine and analogs thereof as compositions for treatment of cancer, and conjugates of imaging agent carriers and amino acids for the diagnosis of tumors and metastases.

Sulfone is an important drug and bioactive compound. Sulfone is widely used as a medicament, such as a medicament gamma-secretase inhibitor for preventing Alzheimer's disease, and is widely applied tobioactive compounds, natural products and agricultural chemicals, such as currently popular herbicide mesotrione. Sulfone is also most often used as an intermediate for organic synthesis. On the other hand, a chalcogen heterocyclic stent has biological activity, such as antitumor drugs and antiproliferative drugs. As is well-known, thiophene, furan and selenium compounds have a variety of biological activities, such as anti-inflammatory agents, anti-HIV PR inhibitors, NQO2 inhibitors, and anticancer agents. The invention develops a simple, convenient and efficient Bronsted acid, i.e., sulfuric acid and catalyzed three components react in water to synthesize aryl(chalcogen-heteroaryl)methyl sulfone, the yield is good to be very high, and the substrate range is wide. The synthesis method isenvironment-friendly and economic, and does not need metal catalysis. The sulfone product can be effectively converted into bactericide analogues and aryl heteroaryl ketones.

The invention discloses a biodegradable lacrimal duct embolus and a preparation method thereof. The lacrimal duct embolus is prepared by using one or more of a lactide/caprolactone copolymer, a glycolide/caprolactone copolymer, a lactide/dioxane ketone copolymer and a lactide/trimethylene carbonate copolymer as raw materials through the following steps of sequentially carrying out melt extrusion,hot stretching and cold cutting on the raw materials in an inert gas atmosphere. The biodegradable lacrimal duct embolus is used for treating dry eye syndromes; in the process of operation, a part ofthe lacrimal duct embolus is implanted into a lacrimal duct, and the rest of the lacrimal duct embolus can automatically be shrunk into the lacrimal duct, therefore, in the process of operation, a patient feels no pain, the diameter of the lacrimal duct of the patient is not required to be measured before operation, and the lacrimal duct embolus in one product specification can be suitable for the lacrimal ducts in different sizes; in the process of preparing the biodegradable lacrimal duct embolus, the embolus can load anti-inflammatory agents, antibiotics and antiproliferative drugs so as to avoid the generation of complications such as inflammations, wrapping and the like; and in addition, the lacrimal duct embolus is good in biocompatibility and can be completely biodegraded in the lacrimal duct, and the final products of the embolus are non-toxic water and carbon dioxide, thereby avoiding secondary surgery of the patient.

Implantable medical devices may directionally elute a first therapeutic agent that promotes the growth of endothelial cells and a second therapeutic agent that inhibits the growth of smooth muscle cells. In some embodiments, implantable medical devices may elute a first therapeutic agent such as an anti-proliferative drug from an abluminal side of the implantable medical device and a second therapeutic agent such as an endothelialization agent from a luminal side of the implantable medical device.

Object of the present invention are esterified conjugates of hyaluronic acid having anti-proliferative activity.

Disclosed is a cytostatic drug attached to a sterile sheet that is designed to be placed between internal body tissues to prevent the formation of post-operative adhesions, which adhesions are really scar tissue formation. This sheet onto or into which the drug is placed may be either a permanent implant or it may be biodegradable. By impregnating an existing product such as the Johnson & Johnson SURGICEL™ absorbable hemostat gauze-like sheet with an anti-proliferative drug such as sirolimus, the biodegradable, drug impregnated mesh would act as a barrier to cell proliferation and hence be a deterrent to the formation of adhesions or scar tissue. Another embodiment of this invention is a cytostatic drug attached to a sheet that is placed at the site of an anastamosis to decrease scar tissue formation from within the vessel at the site of the anastomosis.

The combination of an IGF-1R antagonist such as a humanized antibody and an anti-proliferative drug is described. In a preferred embodiment, the present invention describes the combination of an IGF-1R antibody and an anti-proliferative drug belonging to the EGFR-inhibitor class, which is preferably erlotinib. The combination according to the present invention is useful for the treatment of tumours, including IGF-1R and/or EGFR mediated or dependent tumours.

The invention provides a novel PTCA balloon catheter. The catheter comprises a far-end tube, a near-end tube and a balloon, a near-end tube is arranged at the bottom end of the far-end tube, the balloon sleeves the outside of the near-end tube, the balloon is provided with three layers and comprises a hydrophilic coating, a compatibility layer and an anti-proliferative drug layer, an inner flow layer and an outer flow layer are arranged on the inner wall of the balloon, the inner flow layer is attached to the outer flow layer, the inner flow layer is formed by staggered limiting slim tubes, and the outer flow layer is formed by a fine hair structure. The PTCA balloon catheter adopts the hydrophilic coating, the compatibility layer and the anti-proliferative drug layer to improved the intermiscibility of organisms; and during the flow process, a liquid flows into the inner flow layer from the outer flow layer, the fusion of the liquid is improved by a plurality of groups of the limitingslim tubes, so that the biocompatibility of organisms can be greatly improved; the biological liquid flows to the outer flow layer after being dissolved, and the liquid tends to be stable after beingfused due to the action of a plurality of fine hairs; and in addition, the compatibility of the liquid can be further improved due to the action of the fine hairs.

The present invention describes various devices and methods wherein a cytostatic antiproliferative drug, either alone or in combination with other drugs, is placed between internal body tissues to prevent the formation of scar tissue and/or adhesions during healing of a wound or surgical site. Specific devices to achieve this administration include, but are not limited to, a permanent implant or a biodegradable material having an attached antiproliferative drug such as sirolimus. These antiproliferative drugs may be combined with other drugs including, but not limited to, antiplatelets, antithrombotics or anticoagulants. The present invention also contemplates methods to a reduce scar tissue and/or adhesions or adhesion formation at an anastomosis site. In particular, a cytostatic antiproliferative drug is administered to an arteriovenous shunt anastomoses in patients having end-stage renal disease.

The invention relates to the field of biological medicine, and particularly discloses a nano-drug for inhibiting injured endometrial hyperplasia and application thereof. According to the invention, an anti-proliferation drug RAPA is used as a model drug, phenylboronic acid and mannose are used for synthesizing an amphiphilic carrier PBAP-CDI-Mannose (PCM) with ROS responsiveness, the amphiphilic carrier is used for entrapping the RAPA to form a nanoparticle PMR, and a macrophage cell membrane is coated on the nanoparticle PMR to prepare the multifunctional bionic nanoparticle MM-PMR. The bionic nano particle MM (at) PMR prepared by the invention is uniform in particle size, good in dispersity and relatively good in biocompatibility, has an immune escape function, can be used for targeted pathological site drug delivery, and can be used for inhibiting injured vascular intimal hyperplasia when being applied to preparation of drugs for treating vascular injury.

The invention discloses a coronary artery edge protective stent. The coronary artery edge protective stent comprises a drug-eluting stent and a drug-eluting balloon, wherein the drug-eluting stent comprises a stent body and a delivery system, the drug-eluting balloon comprises a balloon body, the balloon body is cylindrical, a catheter is arranged at one end of the balloon body, a plurality of filling grooves are formed in the outer wall of the balloon body. On the basis of treatment of coronary artery disease by original coronary artery drug-eluting stent implantation, the drug-eluting balloon is used to deliver an anti-proliferative drug to a key part of coronary artery drug-eluting stent implantation, the occurrence of the edge effect of the drug-eluting stent is reduced, the risk of edge restenosis of the stent for a patient is reduced, and the probability of percutaneous coronary intervention is decreased again.