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The Role of Pregnancy-induced Gallbladder Dysmotility in the Pathophysiology of Gestational Diabetes Mellitus

2019-10-03 07:54:43 | BioPortfolio

Summary

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).

Description

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.

Study Design

Conditions

Gestational Diabetes Mellitus

Location

Center for Clinical Metabolic Research, Gentofte Hospital, University of Copenhagen
Hellerup
Denmark
2900

Status

Recruiting

Source

University Hospital, Gentofte, Copenhagen

Results (where available)

View Results

Links

Published on BioPortfolio: 2019-10-03T07:54:43-0400

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Medical and Biotech [MESH] Definitions

Diabetes mellitus induced by PREGNANCY but resolved at the end of pregnancy. It does not include previously diagnosed diabetics who become pregnant (PREGNANCY IN DIABETICS). Gestational diabetes usually develops in late pregnancy when insulin antagonistic hormones peaks leading to INSULIN RESISTANCE; GLUCOSE INTOLERANCE; and HYPERGLYCEMIA.

A condition of fetal overgrowth leading to a large-for-gestational-age FETUS. It is defined as BIRTH WEIGHT greater than 4,000 grams or above the 90th percentile for population and sex-specific growth curves. It is commonly seen in GESTATIONAL DIABETES; PROLONGED PREGNANCY; and pregnancies complicated by pre-existing diabetes mellitus.

The state of PREGNANCY in women with DIABETES MELLITUS. This does not include either symptomatic diabetes or GLUCOSE INTOLERANCE induced by pregnancy (DIABETES, GESTATIONAL) which resolves at the end of pregnancy.

A subclass of DIABETES MELLITUS that is not INSULIN-responsive or dependent (NIDDM). It is characterized initially by INSULIN RESISTANCE and HYPERINSULINEMIA; and eventually by GLUCOSE INTOLERANCE; HYPERGLYCEMIA; and overt diabetes. Type II diabetes mellitus is no longer considered a disease exclusively found in adults. Patients seldom develop KETOSIS but often exhibit OBESITY.

Diabetes mellitus induced experimentally by administration of various diabetogenic agents or by PANCREATECTOMY.

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