Abstract:
The present invention uses the principle that phosphomolybdate binds to hydrophobic surfaces to isolate the phosphomolybdate complex from other phosphate-containing molecules and further uses the SPA concept to bring a radiolabeled phosphomolybdate complex in close contact with a scintillant for measurement by scintillation counting. Generally, the present invention provides an assay for detecting and measuring the amount of orthophosphate (Pi) in an aqueous reaction mixture, wherein the amount of Pi released is separated from the reaction mixture by: adding a solution of molybdate to the reaction mixture to form a phosphomolybdate complex; and contacting the phosphomolybdate complex with a hydrophobic surface, wherein the surface is capable of being separated from the aqueous reaction mixture to allow measurement of the Pi. Particularly, this invention provides an assay for measuring the ATPase activity of enzymes, more particularly, the HPV E1 helicase.
Abstract:
A predictive test for rheumatoid arthritis comprises the detection of antibodies to collagen in a biological sample from a patient by contacting the biological sample with an antigen comprising the CB10 peptide of mammalian type II collagen, or an antibody-binding fragment or variant thereof, for a time and under conditions for an antibody-antigen complex to form, and detecting the antibody-antigen complex, for example by immunoassay. A diagnostic test kit is also disclosed.
Abstract:
The present invention relates to analytical devices for determining the presence or amount of an analyte in a test sample. The analytical devices comprise an inlet port, a vent, a channel, and an array of structures. The structures have immobilized reagent covalently or non-covalently attached to the surface of the structures. The immobilized reagent captures analyte in the test sample where it is detected by a detection system. The present invention also provides methods and reagents for performing assays utilizing the analytical devices of the present invention. The present invention also provides methods of manufacturing the analytical devices of the present invention.
Abstract:
The present invention concerns a method of treating LBP-mediated LPS-induced myeloid cell activation comprising administering a therapeutically effective amount of an anti-LBP monoclonal antibody molecule. A therapeutic composition comprising anti-LBP antibody molecules in a pharmaceutically acceptable excipient is also contemplated.
Abstract:
A method is provided for detecting whether a test composition can inhibit cell fusion mediated by paramyxovirus infection. A method is also provided for identifying an antiviral peptide capable of inhibiting paramyxovirus-induced cell fusion. The methods are based on the discovery that the hemagglutination and fusion-inducing proteins of paramyxoviruses interact to form a complex termed HN:F, that is prerequisite to cell fusion. Antibodies to HN:F provide a novel means of providing improved immunity against paramyxovirus infection.
Abstract:
For isotopes decaying by capture of an inner shell electron by the nucleus, coincident emission of X-ray and gamma photons may occur. The X-ray results from the drop of an outer shell electron to fill the S shell. The gamma results from the transition of the excited daughter nucleus to a lower energy state. The invention disclosed is a Coincident Gamma and X-ray Detector (CGXD) which achieves extraordinary background rejection by a synergistic combination of coincident counting and other background suppresion measures. Whereas the background registred by single gamma counters is of the order of 20-40 counts per minute, a CGXD optimized for the electron capture radioisotope I has a background of about one count per day.
Abstract:
Apparatus and method for studying cellular processes comprise a vessel having a base including a layer comprising a scintillant substance and which is adapted for attachment and/or growth of cells. Cellular processes are examined by scintillation proximity assay using a reagent labeled with a radioisotope.
Abstract:
A series of novel, macrocyclic polyether compounds. The macrocycles have a 21-membered ring, containing six oxygen atoms, and they have a carboxy group (or a salt thereof) directed towards the interior of the ring. Administration of the compounds of the invention to ruminant animals (e.g. cattle and sheep) modifies their digestive fermentation processes such that the volatile fatty acids produced in the rumen contain a higher proportion of propionates rather than acetates, thereby increasing the efficiency of feed utilization in said ruminant animals. Additionally, the compounds of the invention show antibacterial activity in vitro against certain gram-positive microorganisms.