摘要:
The invention provides systems and methods for rapid automated identification of microbes and antimicrobial susceptibility testing (AST) directly from a patient specimen, without specimen preparation. Specimens are loaded into an analytical cartridge for processing. Analytical cartridges are preloaded with species-specific labels that are used to identify and enumerate microbes in the specimen. Instruments, such as analyzers can be used to interact with analytical cartridges to carry out methods of the invention all within the cartridge.
摘要:
A method for determining an interaction between a medicament and a cell type comprising an array of first microdroplets, each containing a cell type derived from a biological sample, an array of second microdroplets, each containing one or more medicaments at one or more predetermined concentrations, merging the array of first microdroplets and the array of second microdroplets to form an array of merged microdroplets, and monitoring the characteristics of one or more cells in the merged microdroplets using an optical detection system configured to detect an interaction between a cell type and a medicament.
摘要:
Provided is a multi-well-based rapid cell culture test device designed such that fluid films with a uniform thickness are formed. The rapid cell culture test device has an array structure of a plurality of aligned well units, each of which includes a first sub-well in which a first fluid is accommodated and a barrier structure surrounding the first sub-well to define the area of the first sub-well. A capillary channel recessed from the bottom surface of the first sub-well while traversing the bottom surface is formed to accommodate the first fluid and the barrier structure is divided into a barrier portion A located adjacent to one end of the capillary channel and a barrier portion B located adjacent to the other end of the capillary channel. The barrier portion A is greater in height than the barrier portion B such that when the barrier portion A is wetted with the first fluid introduced into the first sub-well along its inner wall, a change in the level of the first fluid at the other end of the capillary channel depending on the amount of the first fluid dispensed is minimized.
摘要:
Methods and systems are for identifying the cell type of an unknown microorganism. The device includes: an apparatus for culturing unknown organism(s), a diagnostic data acquisition tool and a computer program. The method includes: incubation of the sample with a growth medium (with or without toxins), and an analysis of the metabolites detected in the sample. The computer system compares the results collected from the device to reference metabolite profiles.
摘要:
An imaging system and method provides automated microbial growth detection for antibiotic sensitivity testing. A processing system having an image sensor for capturing images of an inoculated culture plate having antibiotic disks disposed on the culture media captures images of the plate at separate times (e.g., first and second images). The system generates pixel characteristic data for pixels of the second image from a comparison of the first image and second image. The pixel characteristic data may be indicative of plate growth. The system may access growth modeling data concerning the antibiotic disk(s) and generate simulated image data with a growth model function. The growth model function uses the growth modeling data. The simulated image data simulates growth on the plate relative to the disk(s). The system compares the simulated image and the pixel characteristic data to identify pixel region(s) of the second image that differ from the simulated image.
摘要:
The present invention is concerned with an automated method for obtaining at least one discrete colony from microorganisms or cells comprised in a solution. This method includes a step where acoustic liquid transfer is employed. The present invention further relates to the use of an acoustic liquid transfer device for obtaining at least one discrete colony from micro organisms or cells comprised in a solution. The present invention also relates to an automated method for determining the presence and/or quantity of microorganisms or cells potentially comprised in a solution and to the use of an acoustic liquid transfer device for determining the presence and/or quantity of microorganisms or cells potentially comprised in a solution.
摘要:
The use of metabolic probes is well-established for determining cell viability and assessing drug cytotoxicity. Resazurin-based formulations, in particular, have found utility for determining susceptibilities of microorganisms to antimicrobials, specifically through their use in antibiotic susceptibility testing (AST). There is a strong need currently to shorten AST durations, thus resazurin formulations that produce signals earlier are advantageous. This need results from the slow state of clinical microbiology testing, which may leave patients exposed to unnecessary or ineffective broad-spectrum agents for prolonged periods of time. Another slow microbiology test is Gram staining, still most often performed manually in sequential steps. Speeding Gram typing, preferably with an automated platform, would also speed time-to-results and decrease manual workloads on medical technologists in clinical microbiology laboratories.
摘要:
A device for microbiological analyses is provided. More specifically, a device is provided for standardising the crossing and allowing a perfect angle of 90° between two graduated paper strips impregnated with a predefined concentration gradient of an antimicrobial agent, for evaluating their synergistic effect on the minimum inhibitory concentration (MIC) on a bacterial culture medium.
摘要:
Provided are methods for sampling, testing and validating test lots, comprising: assembling a plurality of product portions from each of a plurality of test lots and combining the portions to provide a corresponding set of test lot samples; enriching the test lot samples; removing portions of each enriched sample, and combining the removed portions to provide a modular composite sample; and testing of the modular composite sample, and individual testing of the enriched test lot samples, using at least one suitable detection assay for a target microbe or organism, wherein when such testing is negative all test lots are validated, and wherein when such testing is positive with respect to the modular composite sample, or with respect to an individual enriched test lot sample, individual test lots may nonetheless yet be validated by further testing of a portion of respective initially-negative enriched test lot samples and obtaining negative results.
摘要:
This invention is an apparatus and method for susceptibility testing one or more biofilms, for selecting one or more anti-microbial combinations with efficacy against the biofilm, and/or in treating a disease or condition mediated by the biofilm The invention includes methods for the selection of antibiotic combinations with efficacy against a specific microbial type and for the formulation of microbe-specific test plates. The invention also includes an assay system to test patient specific isolates for sensitivity to the anti-microbial combinations.