نتایج جستجو برای: matrix assisted laser desorptionionization mass spectrometry maldi tof ms

تعداد نتایج: 1190532  

Journal: :The Brazilian journal of infectious diseases : an official publication of the Brazilian Society of Infectious Diseases 2017
Analía L Fernández Patricia O Andres Cecilia H Veciño Claudia B Nagel María Teresa Mujica

Graphium basitruncatum, a synanamorph of Pseudoallescheria has been rarely reported in human infections. We report a case of subcutaneous phaeohyphomycosis caused by this fungus in a heart transplant recipient. We also describe the phenotypic, molecular methods and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) used to achieve isolate identification.

2004
Xiujun Zhao Keri E. Ramsey Dietrich A. Stephan Paul Russell

METHODS. Human trabecular meshwork cells from five donors were cultured for 3 days with 1 ng/mL of either TGF1 or 2. Changes in gene expression determined with gene microarrays and alterations in protein expression detected by two-dimensional gel electrophoresis and matrix-assisted laser desorption/ ionization-time-of-flight mass spectrometry (MALDI-TOF-MS) were studied in these cells after the...

Journal: :Journal of clinical microbiology 2016
Valentijn A Schweitzer Alje P van Dam I Putu Yuda Hananta Rob Schuurman Johannes G Kusters Rob J Rentenaar

Identification ofNeisseria gonorrhoeaeby the Bruker matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) system may be affected by "B consistency categorization." A supplementary database of 17N. gonorrhoeaemain spectra was constructed. Twelve of 64N. gonorrhoeaeidentifications were categorized with B consistency, which disappeared using the supplementary ...

Journal: :Journal of clinical microbiology 2014
Clémence Beauruelle Hervé Le Bars Laurence Pougnet Ludovic Lesecq Philippe Buisson Geneviève Héry-Arnaud

Fastidiosipila sanguinis is a Gram-positive anaerobic coccus. We report the first case of osteitis implicating this species. The strain was accurately identified by 16S rRNA sequence analysis, matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) identification having failed. The reservoir remained unclear; an endogenous origin is suspected.

2012
Wafaa Jamal May Shahin Vincent O. Rotimi Mubarak Al Kabir

2 5 Matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) 2 6 is suitable for high-throughput and rapid microbial diagnosis at relatively low costs and can be 2 7 considered an alternative for conventional biochemical and molecular identification systems in a 2 8 Clinical Microbiological Laboratory including anaerobe laboratory. Two commercially available

Journal: :Analytical chemistry 2005
Charles M Guttman Stephanie J Wetzel Kathleen M Flynn Bruno M Fanconi David L VanderHart William E Wallace

A matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) interlaboratory comparison was conducted on mixtures of synthetic polymers having the same repeat unit and closely matching molecular mass distributions but with different end groups. The interlaboratory comparison was designed to see how well the results from a group of experienced laboratories would ...

Journal: :Journal of clinical microbiology 2015
Wern-Cherng Cheng I-Shiow Jan Jong-Min Chen Shih-Hua Teng Lee-Jene Teng Wang-Huei Sheng Wen-Chien Ko Po-Ren Hsueh

Among 56 blood isolates of Vibrio species identified by sequencing analysis of 16S rRNA and rpoB genes, the Bruker Biotyper matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) system correctly identified all isolates of Vibrio vulnificus (n = 20), V. parahaemolyticus (n = 2), and V. fluvialis (n = 1) but none of the isolates of serogroup non-O1/O139 (non-...

Journal: :Journal of dairy science 2010
J R Barreiro C R Ferreira G B Sanvido M Kostrzewa T Maier B Wegemann V Böttcher M N Eberlin M V dos Santos

Subclinical mastitis is a common and easily disseminated disease in dairy herds. Its routine diagnosis via bacterial culture and biochemical identification is a difficult and time-consuming process. In this work, we show that matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) allows bacterial identification with high confidence and speed (1 d for bacteri...

Journal: :Journal of clinical microbiology 2011
Abdessalam Cherkaoui Stéphane Emonet José Fernandez Didier Schorderet Jacques Schrenzel

This study was undertaken to evaluate matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) for the rapid identification of beta-hemolytic streptococci. We compared Bruker Biotyper 2.0 with Vitek2 coupled to the agglutination test. MALDI-TOF MS analysis of 386 beta-hemolytic streptococcal isolates yielded high-confidence identification to the species level ...

Journal: :Analytical chemistry 2003
Hookeun Lee S Kim Ratanathanawongs Williams Karen L Wahl Nancy B Valentine

The purpose of this study is to develop a novel bacterial analysis method by coupling the flow field-flow fractionation (flow FFF) separation technique with detection by matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry. The composition of carrier liquid used for flow FFF was selected based on retention of bacterial cells and compatibility with the MALDI p...

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