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- W2568346436 abstract "Two-dimensional gas chromatography mass spectrometry (GCxGC-MS) is utilized to an increasing extent in biomedical metabolomics. Here, we established and adapted metabolite extraction and derivatization protocols for cell/tissue biopsy, serum and urine samples according to their individual properties. GCxGC-MS analysis revealed detection of ~600 molecular features from which 165 were characterized representing different classes such as amino acids, fatty acids, lipids, carbohydrates, nucleotides and small polar components of glycolysis and the Krebs cycle using electron impact (EI) spectrum matching and validation using external standard compounds. Advantages of two-dimensional gas chromatography based resolution were demonstrated by optimizing gradient length and separation through modulation between the first and second column, leading to a marked increase in metabolite identification due to improved separation as exemplified for lactate versus pyruvate, talopyranose versus methyl palmitate and inosine versus docosahexaenoic acid. Our results demonstrate that GCxGC-MS represents a robust metabolomics platform for discovery and targeted studies that can be used with samples derived from the clinic." @default.
- W2568346436 created "2017-01-13" @default.
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- W2568346436 date "2017-04-01" @default.
- W2568346436 modified "2023-09-23" @default.
- W2568346436 title "Optimizing 2D gas chromatography mass spectrometry for robust tissue, serum and urine metabolite profiling" @default.
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- W2568346436 doi "https://doi.org/10.1016/j.talanta.2017.01.003" @default.
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