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Sökning: swepub > Umeå universitet > Refereegranskat > Högskolan i Gävle > Antti Henrik

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1.
  • Hadrévi, Jenny, et al. (författare)
  • Systemic differences in serum metabolome : a cross sectional comparison of women with localised and widespread pain and controls
  • 2015
  • Ingår i: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 5
  • Tidskriftsartikel (refereegranskat)abstract
    • Chronic musculoskeletal pain exists either as localised to a single region or as widespread to multiple sites in several quadrants of the body. Prospective studies indicate that widespread pain could act as a far end of a continuum of musculoskeletal pain that started with chronic localised pain. The mechanism by which the transition from localised pain to widespread occurs is not clear, although many studies suggest it to be an altered metabolism. In this study, systemic metabolic differences between women with chronic localised neck-shoulder pain (NP), women with chronic widespread pain (CWP) and women who were healthy (CON) were assessed. Blood samples were analysed taking a metabolomics approach using gas chromatography mass spectrometry (GC-MS) and orthogonal partial least square discriminant analysis (OPLS-DA). The metabolomics analysis showed a clear systematic difference in the metabolic profiles between the subjects with NP and the CON but only a weak systematic difference between the subjects with CWP and the CON. This most likely reflects a difference in the portion of the metabolome influenced by the two pain conditions. In the NP group, the overall metabolic profile suggests that processes related to energy utilisation and lipid metabolism could be central aspects of mechanisms maintaining disorder.
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2.
  • Malm, Christer, et al. (författare)
  • Evaluation of 2-D DIGE for skeletal muscle: Protocol and repeatability
  • 2008
  • Ingår i: The Scandinavian Journal of Clinical & Laboratory Investigation. - : Informa Healthcare. - 0036-5513 .- 1502-7686. ; 68:8, s. 793-800
  • Tidskriftsartikel (refereegranskat)abstract
    • Proteomic analysis has the potential to yield vast amounts of data. The available proteomic methods have been hampered by methodological errors in quantification due to large gel-to-gel variations. The inclusion of an internal standard greatly reduces this variation, and therefore the purpose of this investigation was: 1) to develop a sample preparation protocol for human skeletal muscle for two-dimensional differentiated gel electrophoresis (DIGE) and 2) to investigate the repeatability of one particular system, the Ettan™ DIGE. To test repeatability, nine aliquots from the same homogenate were labelled with three different CyDye™ dyes (Cy2, Cy3, Cy5). Samples were run on 1824 cm gels, scanned with a Typhoon™ 9410 laser scanner and analysed in the DeCyder™ software. When selecting spots appearing only in triplicate (n = 1314), the mean error was 1.7 % (SD: 10.5 %; 95 % CI: 1.1-2.4 %). When setting the significance level to 99 %, no false-positive changes in protein volume ratios were detected. In the protocol presented here, only 0.5 mg tissue was used and separation of >2500 distinct protein spots in the pH range 3-11 and MW 10-200 kDa. Changes in protein abundance of <20 % could be detected. The method is especially useful when comparing muscle proteins between different conditions; for example, healthy and diseased tissue, before and after treatment or different exercise protocols.
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