The invention relates to methods and devices for quantitative determination of bacteria.

The present invention provides compositions and methods that can be used to determine a peptide signature for an antibody repertoire in a sample comprising multiple antibodies. The of an antibody specificity in method can be used to characterize a phenotype in a sample, such as providing a diagnosis, prognosis or theranosis of a medical condition.

The present invention provides a method and probe for determining colibactin and a colibactin-producing bacterium. According to the present invention, there is provided a fluorescent probe for detecting myristoyl asparagine using, for example, a tissue sample and a fecal sample and detecting enzyme activity of ClbP.

Compositions and methods are provided that reduce the time required for detection of botulinum neurotoxins in cell-based assays. In one aspect an isoquinolynyl compound can be used for this purpose. In such cell-based assays the cell can include an enzyme that facilitates degradation of the reporter significantly faster after the cleavage than before the cleavage, and presence of the Botulinum toxin correlates with reduction of the signal from a baseline signal. The cell can advantageously express both the construct that includes the reporter, and an enzyme that facilitates the degradation.

An ITP-based system and a method are provided. ITP is used to focus a sample of interest and deliver a high concentration target to a pre-functionalized surface comprising immobilized probes, thus enabling rapid reaction at the sensor site.

A device (100) for detecting an analyte (132) includes a polymer material (112) over a substrate (110); a heat transfer element (114) thermally coupled to the substrate; a temperature modification device (118) thermally coupled to the heat transfer element; a controller (121) to produce a thermal (202) wave emanating from the heat transfer element; a flow cell (122) located and configured to pass a liquid (124) over the polymer material; a temperature sensor (134) to detect a temperature (T.sub.2) of the liquid passing over the polymer material; and a processor (123) to calculate a concentration of an analyte (132) in the liquid based at least in part on a phase shift between the thermal wave at the heat transfer element and an attenuated thermal wave (204) in the liquid. Related methods of forming such a device and detecting analytes are also disclosed.

The present invention relates to the field of Clostridium difficile infections. Methods of diagnosing, treating and preventing Clostridium difficile-associated disease and recurrent CDAD are disclosed herein.

A lateral flow assay cassette including a vertical swab holder is provided herein. Also provided are kits including the lateral flow assay cassette and methods of detecting an analyte using the lateral flow assay cassette.

Disclosed herein are methods and compositions that can be used to improve motor deficits and neuroinflammation in subjects in need, for example subjects suffering from neurodegenerative disorders (e.g., Parkinson's disease). Also disclosed are methods and compositions that can be used to diagnose neurodegenerative disorders, such as Parkinson's disease.

Devices, systems, and methods are provided for magnetic focus enhanced lateral flow assays. The devices and systems are ultrasensitive and provide for the visual detection of the presence or absence of one or more target analyteswhich may include pathogens, proteins, or even molecules smaller than the foregoingeven when such analytes are only present in very limited amounts. The devices and systems include an immunostrip with a magnet positioned adjacent thereto, and magnetic probes specific to a target analyte that bind to the target analyte with specificity if present within a fluid sample to be tested. Methods are also provided for detecting one or more target analytes using magnetic focus, such methods including a step of controlling movement of a target analyte complex on an immunostrip incorporating a magnetic field, where such control slows a flow of the target analyte complex through a capture area on the immunostrip.