Journal
OBESITY
Volume 22, Issue 11, Pages 2388-2395Publisher
WILEY
DOI: 10.1002/oby.20868
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Funding
- Swedish Research Council
- Novo Nordisk Foundation
- Crafoord Foundation
- Skane University Hospital Foundation
- Albert Pahlsson Foundation
- Lundberg Foundation
- Diabetes Association in Malmo, Region Skane, ALF
- Magnus Bergvall Foundation
- Fredrik and Ingrid Thurings Foundation
- Borgstroms Foundation
- Lars Hierta Foundation
- Diabetes program at Lund University
- Novo Nordisk Fonden [NNF11OC1014660] Funding Source: researchfish
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ObjectiveWhile impaired glucose tolerance diagnosed by the oral glucose tolerance test (OGTT) is a common trait in obese individuals, less is known about changes in levels of other metabolites. The aim was to reveal the complex alterations in metabolite levels provoked by an OGTT and its perturbation in obese individuals. MethodsGas chromatography/mass spectrometry was used to profile metabolite levels in serum from 14 obese participants (body mass index [BMI] of 43.61.5 kg m(-2) [meanSEM]) at 0, 30, and 120 min during a standard 2-h 75 g OGTT. Metabolite profiles from six lean individuals (BMI of 22.4 +/- 2.4 kg m(-2)), collected from a previous study, were included for comparison. ResultsIn the obese group, 59 metabolite profiles were determined. Among these, 16 deviated from profiles in the lean group. Deviating metabolites were categorized into three groups. Delayed reduction in levels of five fatty acids. Increased levels at 30 min of five amino acids, including isoleucine and leucine. A blunted increase at 30 min of six metabolites. ConclusionsMetabolomics analysis revealed distinct differences in alterations of metabolite levels during an OGTT in obese and lean subjects. To this end, our data suggests a disrupted regulation of ketogenesis, lipolysis and proteolysis in obese individuals.
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