نتایج جستجو برای: q tof ms

تعداد نتایج: 251600  

Journal: :Clinical microbiology reviews 2013
Andrew E Clark Erin J Kaleta Amit Arora Donna M Wolk

Within the past decade, clinical microbiology laboratories experienced revolutionary changes in the way in which microorganisms are identified, moving away from slow, traditional microbial identification algorithms toward rapid molecular methods and mass spectrometry (MS). Historically, MS was clinically utilized as a high-complexity method adapted for protein-centered analysis of samples in ch...

Journal: :Analytical chemistry 2008
Loïc Dayon Alexandre Hainard Virginie Licker Natacha Turck Karsten Kuhn Denis F Hochstrasser Pierre R Burkhard Jean-Charles Sanchez

A new 6-plex isobaric mass tagging technology is presented, and proof of principle studies are carried out using standard protein mixtures and human cerebrospinal fluid (CSF) samples. The Tandem Mass Tags (TMT) comprise a set of structurally identical tags which label peptides on free amino-terminus and epsilon-amino functions of lysine residues. During MS/MS fragmentation, quantification infor...

2014
Aurélien Fotso Fotso Oleg Mediannikov Georges Diatta Lionel Almeras Christophe Flaudrops Philippe Parola Michel Drancourt

BACKGROUND In Africa, relapsing fever borreliae are neglected vector-borne pathogens that cause mild to deadly septicemia and miscarriage. Screening vectors for the presence of borreliae currently requires technically demanding, time- and resource-consuming molecular methods. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) has recently emerged as a to...

2012
Heather C Yun Rachael E Kreft Mayra A Castillo Garth D Ehrlich Charles H Guymon Helen K Crouch Kevin K Chung Joseph C Wenke Joseph R Hsu Tracy L Spirk J William Costerton Katrin Mende Clinton K Murray

BACKGROUND Understanding nosocomial pathogen transmission is restricted by culture limitations. Novel platforms, such as PCR-based electron spray ionization-time-of-flight-mass spectrometry (ESI-TOF-MS), may be useful as investigational tools. METHODS Traditional clinical microbiology (TCM) and PCR/ESI-TOF-MS were used to recover and detect microorganisms from the hands and personal protectiv...

Journal: :Clinical cancer research : an official journal of the American Association for Cancer Research 2008
Noah T Zinkin Franck Grall Killimangalam Bhaskar Hasan H Otu Dimitrios Spentzos Brett Kalmowitz Meghan Wells Manuel Guerrero John M Asara Towia A Libermann Nezam H Afdhal

PURPOSE Proteomic profiling using surface enhanced laser desorption/ionization time of flight mass spectrometry (SELDI-TOF MS) enables the identification of biomarkers for cancer. We evaluated the sensitivity and specificity of SELDI-TOF MS for detection of established hepatocellular cancer (HCC) and compared it against alpha-fetoprotein (AFP), Lens culinaris agglutinin-reactive AFP (AFP-L3), a...

2016
Syed Salman Lateef

Compounds leaching from container closure systems can cause contamination to drug substances or products. As part of a risk evaluation, it is necessary to identify these compounds and ensure that the drugs are suitable for their intended use. Typically, such compounds are present at low concentrations and are masked by the drug matrix. Therefore, highly sensitive and selective methods are requi...

2018
Yaqiong Zhang Puyu Yang Fangyi Yao Jie Liu Liangli (Lucy) Yu

The data presented here are related to the research article entitled "Synthesis and characterization of alkylated caseinate, and its structure-curcumin loading property relationship in water" (Zhang et al., 2018) [1]. This data article reports the detailed spectra information for 1H NMR, 13C NMR and UPLC-Q-TOF MS of the N-succinimidyl fatty acid esters with various alkyl chain lengths (Cn-NHSs,...

2016
Yong-hui Li Yin-feng Tan Na Wei Jun-qing Zhang

BACKGROUND Alpinia oxyphylla fruit (AOF, Yizhi in Chinese) is a well-known traditional Chinese medicine as an anti-diuretic agent and composed of two parts i.e. seed and shell. These two parts have different components, but the bioactivity differences of the two parts are not clear. This study aims to evaluate the different anti-diuretic effects of the seed and shell of AOF. MATERIALS AND MET...

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