84 results about "Antibiotic susceptibilities" patented technology

A sample is tested for the presence of bacteria, such as in an automatic blood culturing apparatus. If bacteria are determined to be present, a bacteriophage-based bacteria identification process is performed to identify the bacteria present. A plurality of bacteria detection processes, such as a blood culture test and Gram stain test may be carried out prior to the bacteria identification process. A bacteriophage-based antibiotic resistance test or antibiotic susceptibility test is also conducted on the sample.

Methods and systems for identification of microorganisms either after isolation from a culture or directly from a sample. The methods and systems are configured to identify microorganisms based on the characterization of proteins of the microorganisms via high-resolution/mass accuracy single-stage (MS) or multi-stage (MSⁿ) mass spectrometry. Included herein are also discussion of targeted detection and evaluation of virulence factors, antibiotic resistance markers, antibiotic susceptibility markers, typing, or other characteristics using a method applicable to substantially all microorganisms and high-resolution/mass accuracy single-stage (MS) or multi-stage (MSⁿ) mass spectrometry.

A method and automated apparatus for locating and selecting a colony of microorganisms on a culture dish and subjecting the obtained sample to a plurality of downstream tests including a test to identify the microorganism and a test to identify the susceptibility of the microorganism to antibiotics. The method includes the automated steps of locating and selecting a colony of microorganisms on a culture dish; obtaining a sample of the selected colony of microorganisms; preparing a suspension of a sample of microorganisms automatically by submerging the pick tool with the sample in a suspension, after which the pick tool is vibrated in at least the vertical direction to release the sample from the pick tool in the suspension. The turbidity of the suspension is monitored to ensure that the concentration of microorganism in suspension is sufficient so that the suspension is used a source for sample for both identification and antibiotic susceptibility of the microorganisms in the sample. The apparatus and system optionally provides for downstream processing of samples prepared for antibiotic susceptibility testing (AST). Such apparatus includes further processing after inoculation of an AST panel for the AST test. Such further processing includes capping and transferring inoculated panels to AST instrument.

An apparatus for inspecting an antibiotic and a method for determining antibiotic sensitivity using the same is provided. The antibiotic susceptibility inspection time which has conventionally taken longer than 24 hours is shortened to about 2 hours or less, the efficacy of the target substance is monitored in real time, the identification of the microorganism, the kind of the antibiotic capable of treating the microorganism, and the minimum dosage thereof are quickly confirmed. Microbial infections requiring prompt diagnosis and treatment can be effectively treated.

The invention provides methods for the rapid determination of the antibiotic susceptibility of a microorganism, such as, an infectious microorganism in a biological sample, using fluorescence in situ hybridization (“FISH”). Methods of the invention may be applied to the rapid identification, typing, antibiotic susceptibility determination, and/or antibiotic minimum inhibitory concentration (MIC) determination for any infectious microorganism, such as a Gram positive bacteria, a Gram negative bacteria, or a yeast.

A testing method is disclosed. The testing method includes: providing a mixture solution of a gelling agent and a microbe to a gelling device; solidifying the mixture solution to form a solid thin film in which the microbe is immobilized; supplying a bioactive agent to the solid thin film and allowing the bioactive agent to diffuse into the solid thin film; and imaging the individual responses of the single microbial cells to the bioactive agent, and determining the minimum inhibitory concentration (MIC) of the bioactive agent based on the analysis of the images to obtain AST results.

The system described herein for bacterial identification can be used as a point-of-care or lab-based diagnostic system. In some implementations, the system can be used to detect other foreign agents within blood or other samples. The system can include disposable microfluidic cartridges that are removable from the system. The microfluidic cartridges can receive a sample, such as a blood sample, that is suspected of containing bacterial cells and separate the bacterial cells from the blood sample. Once the bacterial cells are separated from the blood, the system can introduce the recombinant detector bacteriophages into the system that can infect the bacterial cells. The system can then detect the expression of reporter genes from the recombinant detector bacteriophages.

The present invention provides a method of determining the antibiotic susceptibility of a microorganism comprising the following steps. First, a culture of the microorganism whose susceptibility is to be determined is admixed with an antibiotic to which susceptibility is to be assayed, and a permeabilizing agent for the microorganism present in a non-growth-inhibiting microorganism-permeabilizing effective amount to form an assay culture. Next, the assay culture is incubated under appropriate culture conditions and for a time sufficient to determine the susceptibility of the microorganism to the antibiotic. In another aspect, the present invention provides an improved method for antibiotic susceptibility testing of a microorganism in a culture by admixing the culture with an antibiotic to which susceptibility is to be assayed, and incubating the culture for a time sufficient to determine the susceptibility of the microorganism to the antibiotic, the improvement comprising admixing the culture with a permeabilizing agent for the microorganism present in a non-growth inhibiting microorganism-permeabilizing effective amount.

The subject invention concerns materials and methods for evaluating the susceptibility of bacterial cells to an antibiotic or other antimicrobial compound or agent. In one embodiment, a sample comprising a microbial population is exposed to an antibiotic of interest. The sample is then processed using FISH-RiboSyn methods to determine the specific growth rate of the antibiotic-exposed microbes as compared to an untreated control. The subject invention also concerns materials and methods for determining the most suitable and/or effective antibacterial treatment for a person or animal having a bacterial infection.

An automatic microfluidic system for antibiotic susceptibility testing of the present disclosure at least includes a microfluidic chip. The microfluidic chip includes a fluid storage unit, a reaction unit, a pneumatic micro-pumping unit and a plurality of valve units. The fluid storage unit is provided for storing a bacterial suspension, a broth and an antibiotic solution. The reaction unit includes a first reaction chamber and at least two second reaction chambers. The pneumatic micro-pumping unit is adjacently disposed to the fluid storage unit and the reaction unit for selectively, repeatedly and quantitatively transporting the broth, the bacterial suspension and the antibiotic solution to the reaction unit to form a first mixing solution and at least two second mixing solutions. The valve units include a plurality of pneumatic micro-valves and a plurality of valve control air holes for controlling the opening and closing of the pneumatic micro-valves.

The invention discloses a method for using (CNTs/PANI)n-ITO anode-based MFC (Microbial Fuel Cell) biosensors in antibiotic susceptibility tests. A layer-by-layer self-assembly method is adopted to prepare a carbon nanotube/polyaniline compound-modified IT anode, which is used for constructing single-chamber and double-chamber microbial fuel cell biosensors, and the single-chamber and double-chamber microbial fuel cell biosensors are applied in antibiotic susceptibility tests on drugs such as gentamicin. The invention proposes a new method for conventional antibiotic susceptibility test methods, the problems of long assay time, complex operation, poor repetitiveness and the like existing in the microbial plate method are solved, the constructed microbial fuel cell biosensors are easy to operate, and moreover, a quick, real-time and high-sensitivity antibiotic susceptibility test can be carried out.

The presently disclosed subject matter provides methods, compositions, and kits for assessing the viability of bacteria from the Borrelia genus, assessing the antibiotic susceptibility of bacteria from the Borrelia genus, and identifying compounds with anti-persister activity for bacteria from the Borrelia genus. Methods for inhbiting the growth and/or survival of bacteria from the Borrelia genus and for treating Lyme disease in a subject are also are provided.