Activated apoglucose oxidase, method of preparing it, its use in specific binding assay methods and reagent means and test kits containing it
申请人:MILES LABORATORIES, INC.
公开号:EP0061071A1
公开(公告)日:1982-09-29
A method for increasing the ability of apoglucose oxidase to combine with flavin adenine dinucleotide (FAD) and derivatives thereof to form active glucose oxidase by interacting apoglucose oxidase with an immunologically derived binding substance, e.g., an antibody or a fragment thereof, having a specific binding affinity for glucose oxidase. The apoglucose oxidase/anti-glucose oxidase immune complex is characterized by enhanced ability to combine with FAD and FAD-derivatives to yield glucose oxidase activity. The activation is particularly significant at temperatures elevated from room temperature, e.g., between 30°-45°C. An improved homogeneous specific binding assay method is provided for determining ligands wherein an FAD label is used and is monitored by its ability to combine with apoglucose oxidase to form active glucose oxidase by including anti-glucose oxidase in the reaction mixture.
Theophylline derivatives, antibodies and their preparation from theophylline immunogens, as well as an immuno assay method and reagent means for determining theophylline
申请人:MILES INC.
公开号:EP0077896A1
公开(公告)日:1983-05-04
Theophylline immunogens, antibodies prepared therefrom, labeled theophylline conjugates, synthetic intermediates, and the use of such antibodies and labeled conjugates in immonoassays for determining theophylline are disclosed. The immunogens comprise theophylline coupled at its 9-position to an immunogenic carrier material. Likewise, the labeled conjugates and synthetic intermediates are 9-position derivatives of theophylline or synthetic precursors thereof. The antibody and labeled reagents are particularly useful in homogeneous nonradioisotopic immunoassays for measuring theophylline in biological fluids such as serum.
Cell detection by measurement of flavin adenine dinucleotide
申请人:MILES LABORATORIES, INC.
公开号:EP0105413A2
公开(公告)日:1984-04-18
A method for detecting cellular material, e.g., microbial cells or debris from ruptured microbial cells, in a liquid test sample by determining flavin adenine dinucleotide (FAD) in the liquid sample. Comparing the amount of FAD determined in the test sample to that present in a reference sample, e.g., containing no significant amount of relevant cellular material, enables detection of cellular material of interest in the sample. The method is particularly applicable to the detection of microbial contamination in biological fluids and is preferably carried out by measuring FAD with an apo(glucose oxidase) assay composition. Test systems, kits and devices are also provided.
Tricyclic antidepressant drug immunogens, antibodies, labeled conjugates, and related derivatives
申请人:MILES LABORATORIES, INC.
公开号:EP0107134A1
公开(公告)日:1984-05-02
Tricyclic antidepressant drug (e.g., imipramine, desipramine, amitriptyline, or nortriptyline) immunogens, antibodies prepared therefrom, labeled conjugates, synthetic intermediates, and the use of such antibodies and labeled conjugates in immunoassays for determining such drug. The immunogens comprise the drug coupled at its 2'- position to an immunogenic carrier material. Similarly, the labeled conjugates and synthetic intermediates are 2'- derivatives of the drug or a precusor thereof. The antibodies and labeled reagents are particularly useful in certain homogeneous nonradioisotopic immunoassays for measuring tricyclic antidepressant drugs in biological fluids such as serum.
Method of determining the amount of phosphatidylglycerol in amniotic fluids as a diagnostic indicator
申请人:Isolab, Inc.
公开号:EP0230343A2
公开(公告)日:1987-07-29
Methods and tests to determine the concentration of phosphatidylglycerol (PG) in amniotic fluids to aid in the diagnostic indication of fetal lung maturity are described.