Abstract:
The present invention is concerned with delivering a pharmaceutical composition to a tissue target of a mammalian subject for treating brain diseases or disorders. The process includes the steps of: (i) providing a dispersion of the pharmaceutical composition as particles having an average particle size of from about 150 nm to about 100 microns, and (ii) administering the dispersion to the mammalian subject for delivery to the tissue target of a portion of the pharmaceutical composition by cells capable of reaching the tissue target. The dispersion of the pharmaceutical composition as particles, for example, can be phagocytised or adsorbed by the cells prior or subsequent to administration into the mammalian subject. The dispersion of the pharmaceutical composition can be administered to the central nervous system or the vascular system. After administration, the loaded cells transport the pharmaceutical composition as particles into the tissue target.
Abstract:
Pharmaceutical compositions comprising particles of lipoxygenase inhibitor compounds having an effective average size of from about 10 nm to about 50 microns are provided. More particularly, pharmaceutical compositions of particle of a 5 -lipoxygenase inhibitor compound having an effective average size of from about 50 nm to about 5 microns are provided. The pharmaceutical compositions are in the form of aqueous suspensions with the particle of the 5-lipoxygenase-inhibitor compound present in concentrations of from about 5 to about 200 mg/ml. In addition, methods for making such pharmaceutical compositions are provided. In particular, microprecipitation and direct homogenization in the presence of at least one surfactant are disclosed for making the pharmaceutical compositions.
Abstract:
The present invention is directed to formulations of inclusion complexes of lipoxygenase inhibitors and cyclodextrins having a therapeutically effective concentration of the lipoxygenase inhibitor, methods of making the same and methods of treating disease states using the same. Forming cyclodextrin complexes permits the enhancement of the aqueous solubility of lipoxygenase inhibitors which allows higher concentrations of the lipoxygenase in solution. Aqueous formulations of lipoxygenase inhibitors-cyclodextrin complexes are suitable for parenteral or oral administration for treating and/or preventing inflammatory disease states. The aqueous formulations can be lyophilized to prolong storage stability, assist in oral administration and/or provide for convenient and economical packaging.
Abstract:
The present invention is directed to novel compounds, methods of manufacture and methods of use. The present invention is also directed to solid drug/active agent particles having one or more of the compounds of the present invention associated with the surface thereof. The compounds of the present invention are comprised of a non-polar polyether covalently linked to an anionic sulfonate group. The compounds have an amphipathic quality and preferably, are surface active. Such compounds are preferably useful as surface-active agents to coat and stabilize dispersions of particles in a continuous liquid medium. These surface-active agents may be applied in the stabilization of suspensions, emulsions, or liposome formulations intended for pharmaceutical, medical, cosmetic, or agricultural use. The particles that can be prepared by a variety of methods and will preferably comprise a pharmaceutical agent. Pharmaceutical compositions of the present invention can be used to treat amyriad of conditions and can be administered by many routes, including intravenous, intramuscular, subcutaneous, intrathecal, subdural, intracameral, intracerebral, intralesional, topical, oral, buccal, rectal, pulmonary, and nasal.
Abstract:
The present invention relates to a dispersion of an active agent, which includes a multiphase system of an organic phase and an aqueous phase. The agent, preferably poorly water soluble, possesses surface active properties and itself serves as a dispersantor a stabilizer for the dispersion. The dispersion is suitable for pharmaceutical, veterinary, cosmetic, and agricultural applications, and is suitable for in vivo delivery, particularly by parenteral routes.
Abstract:
The present invention provides a reference electrode solution containing ammonium salts and phosphonium salts for the potentiometric measurement of pH and method of using the same. The use of the ammonium salts and the phosphonium salts to replace potassium chloride or sodium chloride as reference electrolytes in a standard reference electrode minimizes the formation of precipitates in sample solutions containing cation-sensitive compounds. Disruption of ion flow through the reference electrode is eliminated, and accurate pH measurements may be obtained in solutions that contain compounds having a strong affinity for hard cations.
Abstract:
Composición farmacéutica en partículas que incluye partículas con un tamaño medio efectivo de entreaproximadamente 15 nm y aproximadamente 50 micrómetros de al menos un inhibidor de la tubulina defórmula (1): donde X es R3 es arilo o heteroarilo; R3' es hidrógeno; R4, R5, R6 y R7 son independientemente hidrógeno, halógeno o alquilo; R1 es arilalquilo; y R2 es hidrógeno, alquilo, acilo, arilo, alcoxicarbonilo, ariloxicarbonilo, heteroariloxicarbonilo, cicloalcoxicarbonilo,heterocicloalcoxicarbonilo, alqueniloxicarbonilo, cicloalqueniloxicarbonilo y heterocicloalqueniloxi-carbonilo; yal menos un agente tensioactivo seleccionado de entre el grupo consistente en agentes tensioactivos noiónicos, agentes tensioactivos aniónicos, agentes tensioactivos catiónicos, agentes tensioactivos derivadosbiológicamente, agentes tensioactivos zwitteriónicos y aminoácidos.
Abstract:
The present invention is concerned with delivering a pharmaceutical composition to the brain of a mammalian subject for treating brain diseases or disorders. The process includes the steps of: (i) providing a dispersion of the pharmaceutical composition as particles having an average particle size of from about 150 nm to about 100 microns, and (ii) administering the dispersion to the mammalian subject for delivery to the brain of a portion of the pharmaceutical composition by cells capable of reaching the brain. The dispersion of the pharmaceutical composition as particles, for example, can be phagocytized or adsorbed by the cells prior or subsequent to administration into the mammalian subject. The dispersion of the pharmaceutical composition can be administered to the central nervous system or the vascular system. After administration, the loaded cells transport the pharmaceutical composition as particles into the brain.
Abstract:
The present invention provides a method for preparing a suspension of a pharmaceutically-active compound, the solubility of which is greater in a water-miscible first organic solvent than in a second solvent which is aqueous. The process includes the steps of : (i) dissolving a first quantity of the pharmaceutically-active compound in the water-miscible first organic solvent to form a first solution ; (ii) mixing the first solution with the second solvent to precipitate the pharmaceutically-active compound ; and (iii) seeding the first solution or the second solvent or the presuspension.