Obesity Clinical Trial
Official title:
GA-18: The Role of Endogenous GIP in Glycosis Metabolism During Fasting
This research project aims to investigate the role of endogenous GIP during fasting. With the infusion of a GIP receptor antagonist (GIP[3-30]NH2), is it possible to selectively remove the effect of endogenous GIP, and thus describe its effects by comparing it with what happens during a saline infusion.
This research project investigates the effects endogenous GIP has in the body of healthy, overweight people. Two trial days will be held. The participant will receive intravenous infusion of either GIP[3-30]NH2 (800 pmol/kg/min) or placebo (saline) in a randomized order. After 20 minutes, GIP[3-30]NH2 is expected to have maximum effect. On time of 180 minutes, an ad libitum meal is served, which is consumed during continued infusion. When the participant is comfortably full, the infusion is turned off and the trial day ends. During the day, the participant assesses and notes on standardized VAS schedules current appetite, satiety, nausea, fatigue, malaise and thirst. Blood pressure and heart rate are measured every 30 minutes throughout the trial day and blood samples are taken. In total, there will be drawn ten blood samples between intervals of 15 to 30 min. Three times along the way, the activity in the brown adipose tissue is measured with a thermal camera (temperature measurements over the skin on the chest) and the resting metabolic rate is determined with indirect calorimetry (inhaled and exhaled air is captured by breathing under a large plastic bell). ;
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