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The primary aim of the study is to evaluate postprandial gallbladder emptying and plasma concentrations of the glucose-lowering and satiety-promoting gut hormone glucagon-like peptide 1 (GLP-1) during third trimester of pregnancy in women with gestational diabetes mellitus (GDM) compared with age and body mass index (BMI)-matched pregnant control women with normal glucose tolerance (NGT).
Gestational diabetes mellitus (GDM) defined as glucose intolerance first detected during pregnancy is a strong predictor of future type 2 diabetes. Patients with GDM exhibit severely reduced postprandial responses of the insulinotropic and satiety-promoting gut hormone glucagon-like peptide 1 (GLP-1), which normalise alongside remission of GDM after delivery. Ingested nutrients and bile acids constitute potent stimulators of GLP-1 secretion. Reduced postprandial GLP-1 responses likely contribute to the pathophysiology of GDM, but the mechanisms are unknown. Based on previous studies studying gallbladder emptying during pregnancy, we hypothesize that reduced postprandial GLP-1 responses in GDM is due to incomplete gallbladder emptying during third trimester. If our hypothesis proves right, reduced gallbladder emptying and ensuing attenuation of postprandial GLP-1 secretion will constitute an obvious and druggable target for the treatment of GDM.
Fifteen women with gestational diabetes mellitus and 15 age and body mass index (BMI)-matched pregnant women with normal glucose tolerance will be enrolled in the study. For each subject, the study encompasses one screening visit and two experimental days; one during third trimester of pregnancy and one 3-4 months post partum. On experimental days, a standardised liquid mixed meal test (added 1.5 g of paracetamol for evaluation of gastric emptying according to paracetamol absorption) with repeated ultrasonographic gallbladder scans and blood samples will be performed.
Gestational Diabetes Mellitus
Center for Clinical Metabolic Research, Gentofte Hospital, University of Copenhagen
University Hospital, Gentofte, Copenhagen
Published on BioPortfolio: 2019-10-03T07:54:43-0400
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