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Assessment of Gastric Emptying in Non-obese Diabetic Mice Using a [13C]-octanoic Acid Breath Test
Published on: March 23, 2013
Early Effect of Single-dose Sitagliptin Administration on Gastric Emptying: Crossover Study Using the (13)C Breath
Takashi Nonaka1, Yusuke Sekino, Hiroshi Iida
1Gastroenterology Division, Yokohama City University Hospital, Yokohama, Japan.
Background/Aims:
The gastrointestinal motility effects of endogenous incretin hormones enhanced by dipeptidyl peptidase-IV (DPP-IV) inhibitors have not yet been sufficiently investigated. The aim of this study was to determine whether single pre-prandial sitagliptin, the DPP-IV inhibitor, administration might have an effect on the rate of liquid gastric emptying using the (13)C-acetic acid breath test.
Methods:
Ten healthy male volunteers participated in this randomized, two-way crossover study. The subjects fasted for overnight and were randomly assigned to receive 50 mg sitagliptin 2 hours before ingestion of the liquid test meal (200 kcal per 200 mL, containing 100 mg (13)C-acetate) or the test meal alone. Under both conditions, breath samples were collected for 150 minutes following the meal. Liquid gastric emptying was estimated by the values of the following parameters: the time required for 50% emptying of the labeled meal (T1/2), the analog to the scintigraphy lag time for 10% emptying of the labeled meal (Tlag), the gastric emptying coefficient and the regression-estimated constants (β and κ), calculated by using the (13)CO2 breath excretion curve using the conventional formulae. The parameters between the 2 test conditions were compared statistically.
Results:
No significant differences in the calculated parameters, including T1/2, Tlag, gastric emptying coefficient or β and κ, were observed between the 2 test conditions.
Conclusions:
The present study revealed that single-dose sitagliptin intake had no significant influence on the rate of liquid gastric emptying in asymptomatic volunteers.
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