Abstract:
This invention provides a method of and compositions for increasing or maintaining glomerular filtration rate while preserving renal structure in a patient comprising administering an angiotensin II type 1 vascular receptor antagonist to the patient, independent of its effects on systemic blood pressure. The invention provides that, by administering the AII type 1 receptor antagonist, blood flow to the kidney can be improved without sacrificing intraglomerular pressure and therefore glomerular filtration and that even with this enhanced glomerular pressure and filtration, renal structure is preserved. Also provided is a method of screening AII type 1 receptor antagonists for the ability to maintain or increase glomerular filtration rate while decreasing mesangial matrix accumulation comprising the steps of administering the antagonist in an animal model characterized by decreased glomerular filtration rate and increased mesangial matrix accumulation and selecting the compounds that increase glomerular filtration rate while decreasing mesangial matrix accumulation.
Abstract:
The present invention relates to a method and apparatus for producing uniform polymeric spheres with controllable permeability. This invention may be useful for encapsulating living cells or tissue or chemicals or medicines in uniform polymeric spheres. In particular, this invention relates to polymeric microspheres made from polycation and polyanion polymer solutions. An apparatus includes airtight housing (1) having top (3) and bottom (25) chambers. Top chamber (3) includes pressure regulator means (5), stationary polyanion reservoir tank (7), polycation reservoir tank (27), and feed line (9) to adjustable tank (11). Tank (11) is associated with oscillator (13), nozzle (14) and capacitance means (19). Nozzle (14) and oscillator (3) cooperate to form polyanion droplets. In the bottom chamber (25) annular nozzle (50) is used to form an annular jet of polycation solution. The droplets and polycation jet are mixed at minimal impact velocities to form uniform polymeric sphere.
Abstract:
Novel cyclic hydroxamic acid of formula (I), R?1, R2, and R3¿ each, independently, is hydrogen, C1-24 alkyl, C2-24 alkenyl or an aryl or arylalkyl group of formulae (a), (b), (c), (d), wherein R?4, R5, R7 and R8¿ each, independently is hydrogen, C1-4 alkyl, C1-4 alkoxy, trifluoromethyl, halogen or nitro; l is 1-3; m is 1-3; n is 1-3; k is 1-3; R?6 and R9¿ each, independently is C1-24 alkylene or C2-24 alkenylene; wherein at least one R?1, R2 and R3¿ is selected from the group consisting of aryl and arylalkyl and wherein at least one other R?1, R2 and R3¿ is selected from the group consisting of alkyl, alkenyl, aryl and arylalkyl; with the provisos that, more than one of R?1, R2 and R3¿ are not hydrogen at the same time and that at least two substituents other than hydrogen of the R?1, R2 and R3¿ substituents are found at different carbons of the piperidin-2-one ring; and the pharmaceutically acceptable salts thereof possess an inhibitory activity against 12-lipoxygenase, and therefore, may be useful for treating and/or preventing inflammation, immune diseases, psoriasis, arteriosclerosis and/or ischaemic cardiovascular diseases and also for suppressing metastasis of cancer.
Abstract:
A method of detecting gene deletions includes the steps of obtaining a genomic DNA sample possibly including a gene deletion, the gene having two ends normally flanked by two homologous regions having substantially identical portions, the gene deletion being in the form of a fusion fragment of the two homologous regions. The genomic DNA is amplified using a set of primers capable of amplifying both the fusion fragment and the two normal homologous regions having the gene in-between. The amplified fusion fragments are characterized alone indicating a homozygous deletion, a combination of fusion fragments and the two homologous regions and the gene in-between indicating a heterozygote deletion, or the two homologous regions and the gene alone indicating a homozygous nondeletion. Novel primers for use in the inventive method are also disclosed.
Abstract:
This invention relates to a method to treat a heart attack victim to reduce heart muscle damage. In particular, the invention relates to a method to reduce myocardial reperfusion injury by selectively administering a nonhypotensive amount of a compound that selectively activates adenosine-1 receptor, a compound that selectively activates adenosine-2 receptor, or an adenosine, all in the presence of an effective amount of lidocaine.
Abstract:
A plasmid consists essentially of a small pCMV4 expression vector including a coding sequence of human alpha-1 antitrypsin incorporated therein. The present invention further provides a method for delivering the gene to a patient, the mechanism including a liposome including the expression plasmid incorporated therein, the plasmid being capable of expression of the gene extrachromosomally in the cells of a target tissue and being unincorporable into the chromosome of the cells of the target tissue. The present invention further provides a primer for inserting the coding sequence of the protein into the expression vector. Finally, the present invention provides a method of treatment for deficiency of a gene product in cells of a target tissue by using the novel liposome.
Abstract:
A novel alteration of a viral DNA sequence, derived from a human adenovirus type 3 mutant (Ad3) designated Ad3h15, provides a transcriptional control element which can be used to regulate expression of a selected gene in animal and human cells. The Ad3h15 control element blocks transcription of a controlled gene in the presence of the products of the Ad3 E1A gene, and amplifies transcription in the presence of type 5 (Ad5) adenovirus E1A gene products.
Abstract:
The present invention provides a compound of formula (I), wherein R is selected from the group consisting of CH3, CH2CH3, (CH2)2CH3, (CH2)3CH3, (CH2)4CH3, (CH2)5CH3, (CH2)6CH3, (CH2)2O(CH2)3CH3, CH2HC=CH(CH2)3CH3, CH2CC(CH2)3CH3, CCH2CC(CH2)2CH3, CH2CC-CCH2CH3, CH2CC-CH3 and CH2CCH; and R' is selected from the group consisting of CH3, CF3, CH2Cl and CH2Br or a pharmaceutically acceptable salt or hydrate thereof. Also provided is a method of inhibiting the synthesis of prostaglandin endoperoxide syntase-2 (PGHS-2) in a mammal.
Abstract:
The present invention provides a method of inhibiting or disrupting cellular adhesion of a cell comprising transferring into the cell a polypeptide comprising a cell adhesion regulatory domain of an adhesion receptor or counter receptor expressed by the cell. In particular, the present invention provides a method of inhibiting or disrupting cellular adhesion of a cell comprising transferring into the cell a polypeptide comprising a cell adhesion regulatory domain of a subunit, i.e., the alpha subunit or the beta subunit of an integrin expressed by the cell.
Abstract:
A method for purifying a polysaccharide from group B beta -hemolytic Streptococcus (GBS) bacteria includes contacting a bacterial fermentation stock with a hydrophobic interaction chromatography (HIC) resin. Additional steps may include a phenol/saline extraction and an ion exchange chromatography. The method results in a product having very high purity. The product of the purification provides a composition which is highly useful in both research and therapeutic settings.