Patent application number | Description | Published |
20080233051 | Nanoparticles for two-photon activated photodynamic therapy and imaging - The present invention provides organically modified silica (ORMOSIL) nanoparticles into which have been incorporated two-photon absorption dye molecules. The two photon absorption dye displays a unique aggregation induced fluorescence enhancement behavior. As a result ORMOSIL nanoparticles with high amounts of the dye can be prepared. These particles can be used for imaging. In one embodiment, the nanoparticles can additionally have incorporated therein a photosensitizer. The photosensitizer can be activated by intraparticle fluorescence resonance energy transfer (FRET) from the dye aggregates resulting in enhanced fluorescence and singlet oxygen generation from photosensitizer under two-photon excitation conditions. Such nanoparticles can be used for photodynamic therapy applications. | 09-25-2008 |
20090035576 | Nanoparticles for two-photon activated photodynamic therapy and imaging - The present invention provides organically modified silica (ORMOSIL) nanoparticles into which have been incorporated two-photon absorption dye molecules. The two photon absorption dye displays a unique aggregation induced fluorescence enhancement behavior. As a result ORMOSIL nanoparticles with high amounts of the dye can be prepared. These particles can be used for imaging. In one embodiment, the nanoparticles can additionally have incorporated therein a photosensitizer. The photosensitzer can be activated by intraparticle fluorescence resonance energy transfer (FRET) from the dye aggregates resulting in enhanced fluorescence and singlet oxygen generation from photosensitizer under two-photon excitation conditions. Such nanoparticles can be used for photodynamic therapy applications. | 02-05-2009 |
20090043090 | ADDUCT OF FLUORESCENT DYE AND TUMOR AVID TETRAPYRROLE - A compound having preferential localization in tumor tissue relative to normal tissue, a preferential electromagnetic absorption at a wavelength between about 660 and 900 nm, and a fluorescence at a wavelength shifted from the preferential absorption by at least +30 nm and preferably at least +50 nm. The compound further preferably destroys tumor tissue in which it is absorbed when exposed to light at its preferential absorption wavelength. In a preferred embodiment of the invention, the compound is a conjugate of a tumor avid tetrapyrrole compound with a fluorescent dye, and more preferably the fluorescent dye is an indocyanine dye such as indocyanine green. The tumor avid tetrapyrrole compound is preferably a porphyrin derivative selected from the group consisting of chlorins, bacteriochlorins, purpurins and derivatives thereof. | 02-12-2009 |
20090162289 | Water soluble tetrapyrollic photosensitizers for photodynamic therapy - A tetrapyrollic photosensitizer compound having at least one pendant —CH | 06-25-2009 |
20100056983 | Treatment of cancer using photodynamic therapy - A method for treatment of cancerous tissue in the upper respiratory system including the steps of: injecting HPPH in a physiologically compatible medium into a patient having the cancerous tissue at a level of 3 through 5 mg/m | 03-04-2010 |
20100130909 | TREATMENT OF BARRETT'S ESOPHAGUS USING PHOTODYNAMIC THERAPY - A method for treatment of Barrett's esophagus comprising the steps of: injecting HPPH in a physiologically compatible medium into a patient having Barrett's esophagus tissue to provide a dose level of 3 through 5 mg/m | 05-27-2010 |
20100137396 | TREATMENT OF ESOPHAGEAL HIGH GRADE DYSPLASIA USING PHOTODYNAMIC THERAPY - A method for treatment of esophageal high grade dysplasia comprising the steps of: injecting HPPH in a physiologically compatible medium into a patient having high grade dysplasia tissue to provide a dose level of 3 through 5 mg/m | 06-03-2010 |
20100144820 | THERAPEUTIC HPPH DOSAGE FOR PDT - A method for treating cancer and other hyperproliferative tissues in humans that can be exposed to light comprising injection of HPPH at the equivalent to a dose of 0.05 to 0.11 mg/kg of body weight 24 hours post injection and exposing the tumor or other hyperproliferative tissue to 665±10 nm of light at 50 to 200 Joules/cm | 06-10-2010 |
20100184970 | Porphyrin-based compounds for tumor imaging and photodynamic therapy - This invention describes a first report on the synthesis of certain | 07-22-2010 |
20110091373 | PAA NANOPARTICLES FOR ENHANCEMENT OF TUMOR IMAGING - A composition comprising PAA nanoparticles containing a post loaded tetrapyrollic photosensitizer and an imaging agent and methods for making and using same. | 04-21-2011 |
20110091390 | WATER SOLUBLE TETRAPYROLLIC PHOTOSENSITIZERS FOR PHOTODYNAMIC THERAPY - A tetrapyrollic photosensitizer compound having at least one pendant —CH | 04-21-2011 |
20110223102 | MULTIMODALITY AGENTS FOR TUMOR IMAGING AND THERAPY - A compound that is a conjugate of an antagonist to an integrin expressed by a tumor cell and at least one of a tumor avid tetrapyrollic photosensitizer, a fluorescent dye, and a radioisotope labeled moiety wherein the radioisotope is | 09-15-2011 |
20110264027 | B RING REDUCED-D RING OXIDIZED TETRAPYROLLIC PHOTOSENSITIZERS FOR PHOTODYNAMIC THERAPY AND TUMOR IMAGING - Tetrapyrollic photosensitizers and imaging agent compounds having A, B, C, and D rings and having a reduced B ring and an oxidized D ring. The compounds preferably have a purity of at least 95 percent and preferably have a fused system connected at an unsaturated carbon atom of the C ring nearest the D ring and at the unsaturated carbon atom between the C and D rings. The invention also includes a method of making the compounds at over 95 percent yield by starting with a B and D ring oxidized tetrapyrollic compound and dissolving it in a halogenated hydrocarbon solvent and treating it with sufficient nitroalkane solution of FeCl | 10-27-2011 |
20110288234 | SILICA NANOPARTICLES POSTLOADED WITH PHOTOSENSITIZERS FOR DRUG DELIVERY IN PHOTODYNAMIC THERAPY - A nanoparticle including a polysiloxane base having an exterior surface and having a photosensitizer at least partly exposed at its exterior surface, said photosensitizer being secured to the exterior surface by loading the photosensitizer onto the surface after formation of the polysiloxane base of the nanoparticle. The nanoparticle may have tumor targeting moieties and may be post loaded with cyanine dye. The nanoparticle preferably includes post loaded moieties providing at least two of tumor specificity, photodynamic properties and imaging capabilities and the photosensitizer is tagged with a radioisotope. A method for preparation of the nanoparticle is also provided. | 11-24-2011 |
20120097538 | METALLATION ENHANCEMENTS IN TUMOR-IMAGING AND PDT THERAPY - A compound in the form of a metallized tetrpyrollic photosensizer linked to a fluorescent dye where the photosensitizer (PS), is linked by a structure that does not have detrimental radiation emmitance or absorbing characteristics, to a fluorophore, usually a cyanine dye (CD). The photosensitizer in accordance the invention is a metallized analog of porphyrins, chlorins, purpurinimides, bacterio pupurinimides, phthalocyanines, expanded porphyrins, benzoporphyrin derivatives and purpurins. The fluorophore is usually a cyanine dye with varaible substituents. And, A method for determining effectiveness of PDT by comparing proportion of STAT-3 monomer with crosslinked STAT-3 dimer after PDT where the relative proportion of STAT-3 monomer to crosslinked STAT-3 directly correlates to efficacy of the PDT. | 04-26-2012 |