title: Metabolic profiles during an oral glucose tolerance test in pregnant women with and without gestational diabetes.
abstract: OBJECTIVE
  Gestational diabetes (GDM) is a complex metabolic condition associated with hyperpglycemia that is diagnosed in an oral glucose tolerance test (OGTT) during pregnancy. For a deeper understanding of the pathology of the disease, further investigations during pregnancy are required, ideally under metabolic challenging conditions.
  
  
  METHODS
  We performed targeted metabolomics in a group of 24 well-matched women during an oral glucose tolerance test (OGTT). 231 plasma metabolites were profiled and compared to conventional clinical diagnostics.
  
  
  RESULTS
  A pattern of 8 metabolites differed between GDM and healthy controls as early as 30 min in an OGTT (AUC 0.977±0.008), and an increase in acylcarnitine C18:0, decreased concentrations of diacyl phosphatidylcholines (PC aa) C34:4, PC aa C36:4, PC aa C38:5, Lyso PC C20:4 and arachidonic acid were associated with insulin resistance.
  
  
  CONCLUSIONS
  Our data suggest an additional value of metabolite pattern in the diagnosis of GDM and describe altered pathways that might be subjected to a more precise diagnosis and individualized therapy.
authors.affiliation: Division of Clinical Chemistry and Pathobiochemistry, University Hospital Tuebingen, Tuebingen, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Lehmann
authors.affiliation: Biocrates Life Sciences, Innsbruck, Austria.
authors.forename: T
authors.initials: T
authors.lastname: Friedrich
authors.affiliation: Biocrates Life Sciences, Innsbruck, Austria.
authors.forename: G
authors.initials: G
authors.lastname: Krebiehl
authors.affiliation: Biocrates Life Sciences, Innsbruck, Austria.
authors.forename: D
authors.initials: D
authors.lastname: Sonntag
authors.affiliation: German Center for Diabetes Research (DZD), Tuebingen, Germany.
authors.forename: H-U
authors.initials: HU
authors.lastname: Häring
authors.affiliation: German Center for Diabetes Research (DZD), Tuebingen, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Fritsche
authors.affiliation: German Center for Diabetes Research (DZD), Tuebingen, Germany.
authors.forename: A M
authors.initials: AM
authors.lastname: Hennige
mesh_terms: D000328:Adult; D001786:Blood Glucose / Q000378:metabolism*; D016640:Diabetes, Gestational / Q000378:metabolism*; D005260:Female; D005951:Glucose Tolerance Test; D006801:Humans; D007333:Insulin Resistance / Q000502:physiology*; D055442:Metabolome / Q000502:physiology*; D011247:Pregnancy / Q000378:metabolism*
chemical_list: D001786:Blood Glucose