摘要:
Means for the detection of free ligand analogue conjugate in fluids from competitive ligand-receptor assay processes. Ligand analogue antibodies that bind the ligand analogue conjugate with substantially greater affinity than their affinity for target ligand are selected and used in competitive ligand-receptor assay processes to bind the free fraction of the ligand analogue conjugate. This means permits the detection of the free fraction of ligand analogue conjugate even in the presence of substantially higher concentrations of free target ligand. For the purposes of the present invention, ligand analogue antibodies are antibodies that exhibit at least 100.times.greater affinity for the ligand analogue conjugate compared to their affinity for the target ligand.
摘要:
The present invention relates to materials and procedures for evaluating the prognosis of patients suffering from acute coronary syndromes. In particular, the level of BNP, or a marker related to BNP, in a patient sample, alone or in combination with one or more other prognostic markers, provides prognostic information useful for predicting near-term morbidity and/or mortality across the entire spectrum of acute coronary syndromes, including unstable angina, non-ST-elevation non-Q wave myocardial infarction, ST-elevation non-Q wave MI, and transmural (Q-wave) MI.
摘要:
Methods and test devices for detecting the presence or amount of target ligand in non-competitive sandwich ligand-receptor assay processes. Antibodies which bind to the complex of ligand receptor and target ligand but do not bind significantly to the ligand receptor and which bind the target ligand with substantially less affinity than the complex are taught and their uses described. These assays can be used to eliminate the "hook" effect in non-competitive sandwich assays. Furthermore, the antibodies are selected and assay methods described so that, as a result of the assay process, no detectable response is observed due to the binding of antibody and ligand receptor in the absence of target ligand.
摘要:
The present invention relates to materials and procedures for evaluating the prognosis of patients suffering from acute coronary syndromes. In particular, the level of BNP, or a marker related to BNP, in a patient sample, alone or in combination with one or more other prognostic markers, provides prognostic information useful for predicting near-term morbidity and/or mortality across the entire spectrum of acute coronary syndromes, including unstable angina, non-ST-elevation non-Q wave myocardial infarction, ST-elevation non-Q wave MI, and transmural (Q-wave) MI.
摘要:
The present invention relates to methods for the diagnosis and evaluation of stroke and transient ischemic attacks. In a particular aspect, patient samples are analyzed for the presence or amount of a panel of markers comprising one or more specific markers for cerebral injury and one or more non-specific markers for cerebral injury. In an alternative aspect, samples are analyzed for B-type natriuretic peptide. A variety of markers are disclosed for assembling a panel for such diagnosis and evaluation. In various aspects, the invention provides methods for early detection and differentiation of stroke types and transient ischemic attacks, for determining the prognosis of a patient presenting with stroke symptoms, and identifying a patient at risk for cerebral vasospasm. Invention methods provide rapid, sensitive and specific assays to greatly increase the number of patients that can receive beneficial stroke treatment and therapy, and reduce the costs associated with incorrect stroke diagnosis.
摘要:
This invention provides a novel Cryptosporidium parvum protein disulfide isomerase polypeptide, and nucleic acids that encode this polypeptide. The invention also provides methods, reagents, and kits that are useful for diagnosing infection by Cryptosporidium parvum. The methods are based on the discovery of binding agents, including recombinant polyclonal antibodies, that bind to the protein disulfide isomerase polypeptide of C. parvum.
摘要:
A filtration device, apparatus, and method of filtration useful for filtering liquid samples are disclosed wherein filtration occurs opposite the direction of centrifugal force. The filtration device is placed within a container that contains the liquid sample to be filtered. Together, the filtration device and the container comprise the filtration apparatus. Centrifugation forces the liquid sample present in the container to enter the filtration device, thereby effecting filtration. The vertical position of the filtration device is fixed within this container during filtration.
摘要:
This invention provides methods, reagents, and kits that are useful for diagnosing infection by E. histolytica. The methods are based on the discovery of binding agents, including recombinant polyclonal antibodies, that bind to the 29 kDa antigen of E. histolytica.
摘要:
This invention provides methods, reagents, and kits that are useful for diagnosing infection by Giardia lamblia. The methods are based on the discovery of binding agents, including recombinant polyclonal antibodies, that bind to the α-1-giardin antigen of G. lamblia.
摘要:
This invention provides methods, compositions and kits for concentrating target ligands, including microorganisms, from samples, including biological samples. The methods involve the use of magnetic particles to concentrate the target analytes. Also provided are methods, compositions and kits for detecting the presence of target ligands in samples.