摘要:
The present invention is directed to metal chelating conjugates for use as metallopharmaceutical diagnostic or therapeutic agents. Specifically, conjugates of the present invention include one or more carriers, a linker, and metal coordinating moiety comprising a resorcinol, thioresorcinol, or dithioresorcinol derivative through which the metal coordinating moiety is bonded to the linker.
摘要:
The present invention is directed to metal chelating conjugates for use as metallopharmaceutical diagnostic or therapeutic agents. Specifically, conjugates of the present invention include one or more carriers, a linker, and metal coordinating moiety comprising a resorcinol, thioresorcinol, or dithioresorcinol derivative through which the metal coordinating moiety is bonded to the linker.
摘要:
The present invention relates to pyrazine derivatives such as those represented by Formulas I and II. X1 to X4 of Formulas I and II may be characterized as electron withdrawing groups, while Y1 to Y4 of Formulas I and II may be characterized as electron donating groups. Pyrazine derivatives of the present invention may be utilized in assessing organ (e.g., kidney) function. In a particular example, an effective amount of a pyrazine derivative that is capable of being renally cleared may be administered into a patient's body. The pyrazine derivative may capable of one or both absorbing and emanating spectral energy of at least about 400 nm (e.g., visible and/or infrared light). At least some of the derivative that is in the body may be exposed to spectral energy and, in turn, spectral energy may emanate from the derivative. This emanating spectral energy may be detected and utilized to determine renal function of the patient.
摘要:
The present invention is directed to metal chelating conjugates for use as metallopharmaceutical diagnostics or therapeutic agents. Specifically, conjugates of the present invention include a carrier, a metal coordinating moiety, and a urea linkage chemically linking the metal coordinating moiety to the carrier. The carrier is generally utilized for targeting the conjugate to a biological tissue or organ.
摘要:
The present invention provides compositions comprising a contrast agent capable of reversibly binding to thiol groups of blood-borne proteins. The compositions of the invention provide increased residence time of the contrast agent in the vasculature, thus providing effective blood pool contrast agents. The invention also provides methods for imaging a patient comprising administering a composition of the invention and obtaining an image.
摘要:
Methods and diagnostic compositions are disclosed for enhancing magnetic resonance imaging which utilize a paramagnetic metal cluster. Magnetic resonance contrast media containing Z+[Mn.sub.12 X.sub.12 (OYR).sub.16 (L).sub.4 ], where OYR is an oxyacid such as benzoic acid, acetic acid, methyl sulphonic acid, methyl phosphonic acid; L is a neutral donor such as water, alcohol, pyridine, or other amines; X is a chalcogen, such as O or S; and Z is a pharmaceutically acceptable counterion are disclosed. Z may also be a paramagnetic counter ion, such as a high spin metal cluster. The paramagnetic cluster may optionally be complexed or conjugated to a carrier compound capable of altering the paramagnetic metal cluster's biodistribution, increasing its selectivity of tumor localization, and amplifying its proton relaxivity.
摘要:
Injection systems and related methods including an injection device, an operator interface, and modules to determine operational parameters during an MRA imaging procedure. Such parameters may be used to optimize and/or maximize signal intensity during an MRA imaging procedure. The injection system may include a target in-bloodstream contrast agent concentration determination module that determines a target in-bloodstream contrast agent concentration at least partially based on contrast agent type and MRA imager parameters. The injection system may include a contrast agent injection rate determination module that determines a contrast agent injection rate at least partially based on the target in-bloodstream contrast agent concentration, an initial contrast agent concentration, and a cardiac output rate of a patient to be imaged. The injection system may include a diluent injection rate determination module that determines a diluent injection rate at least partially based on the contrast agent injection rate.
摘要:
A compound comprising a metal chelate linked to a hexose carrier for use as a metallopharmaceutical diagnostic or therapeutic agent is provided. The compound is suitable for imaging by single-photon emission computed tomography, computer assisted tomography, magnetic resonance spectroscopy, magnetic resonance imaging, positron emission tomography, fluorescence imaging or x-ray.
摘要:
Injection systems and related methods including an injection device, an operator interface, and modules to determine operational parameters during an MRA imaging procedure. Such parameters may be used to optimize and/or maximize signal intensity during an MRA imaging procedure. The injection system may include a target in-bloodstream contrast agent concentration determination module that determines a target in-bloodstream contrast agent concentration at least partially based on contrast agent type and MRA imager parameters. The injection system may include a contrast agent injection rate determination module that determines a contrast agent injection rate at least partially based on the target in-bloodstream contrast agent concentration, an initial contrast agent concentration, and a cardiac output rate of a patient to be imaged. The injection system may include a diluent injection rate determination module that determines a diluent injection rate at least partially based on the contrast agent injection rate.
摘要:
The present invention is directed to metal chelating conjugates for use as metallopharmaceutical diagnostic or therapeutic agents. Specifically, conjugates of the present invention include one or more carriers, a linker, and a metal coordinating moiety comprising a substituted phenyl, pyridyl, or pyrimidyl derivative.