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      Types, principle, and characteristics of tandem high-resolution mass spectrometry and its applications

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          Abstract

          We review the principle and functional characteristics of different types or models for THRMS and provide a brief description of its applications in medical research, food safety, and environmental protection fields.

          Tandem high-resolution mass spectrometry (THRMS) is an analytical technique that has arisen in recent years and is now widely used in pharmaceutical research and development (R&D; for example, for the identification of constituents in herbs and formulae, pharmacokinetics, omics, and drug degradation), food safety, environmental contamination and other research fields. Time of Flight (TOF) and Orbitrap are the most widely used mass analysers in THRMS, and the technical specifications vary among the different types of THRMS and even among the different manufacturers for a given type of analyser. In this article, we review the principle and functional characteristics of different types or models for THRMS and provide a brief description of its applications in the medical research, food safety, and environmental protection fields.

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          Most cited references109

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          Quantitative analysis of complex protein mixtures using isotope-coded affinity tags.

          We describe an approach for the accurate quantification and concurrent sequence identification of the individual proteins within complex mixtures. The method is based on a class of new chemical reagents termed isotope-coded affinity tags (ICATs) and tandem mass spectrometry. Using this strategy, we compared protein expression in the yeast Saccharomyces cerevisiae, using either ethanol or galactose as a carbon source. The measured differences in protein expression correlated with known yeast metabolic function under glucose-repressed conditions. The method is redundant if multiple cysteinyl residues are present, and the relative quantification is highly accurate because it is based on stable isotope dilution techniques. The ICAT approach should provide a widely applicable means to compare quantitatively global protein expression in cells and tissues.
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            Chemometrics in metabonomics.

            We provide an overview of how the underlying philosophy of chemometrics is integrated throughout metabonomic studies. Four steps are demonstrated: (1) definition of the aim, (2) selection of objects, (3) sample preparation and characterization, and (4) evaluation of the collected data. This includes the tools applied for linear modeling, for example, Statistical Experimental Design (SED), Principal Component Analysis (PCA), Partial least-squares (PLS), Orthogonal-PLS (OPLS), and dynamic extensions thereof. This is illustrated by examples from the literature.
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              Stable Isotope Labeling by Amino Acids in Cell Culture, SILAC, as a Simple and Accurate Approach to Expression Proteomics

              S.-E. Ong (2002)
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                Author and article information

                Journal
                RSCACL
                RSC Advances
                RSC Adv.
                Royal Society of Chemistry (RSC)
                2046-2069
                2015
                2015
                : 5
                : 130
                : 107623-107636
                Article
                10.1039/C5RA22856E
                fab197a0-ea2e-48fd-9573-78a7d4d71462
                © 2015
                History

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