Sitagliptin, an dipeptidyl peptidase-4 inhibitor, does not alter the pharmacokinetics of the sulphonylurea, glyburide, in healthy subjects |
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Authors: | Mistry Goutam C Bergman Arthur J Zheng Wei Hreniuk David Zinny Miguel A Gottesdiener Keith M Wagner John A Herman Gary A Ruddy Marcella |
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Affiliation: | Merck &Co., Inc., Whitehouse Station, NJ and ProMedica Clinical Research Center, Boston, MA, USA |
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Abstract: | AIMSSitagliptin, a dipeptidyl peptidase-4 inhibitor, is an incretin enhancer that is approved for the treatment of Type 2 diabetes. Sitagliptin is mainly renally eliminated and not an inhibitor of CYP450 enzymes in vitro. Glyburide, a sulphonylurea, is an insulin sensitizer and mainly metabolized by CYP2C9. Since both agents may potentially be co-administered, the purpose of this study was to examine the effects of sitagliptin on glyburide pharmacokinetics.METHODSIn this open-label, randomized, two-period crossover study, eight healthy normoglycaemic subjects, 22–44 years old, received single 1.25-mg doses of glyburide alone in one period and co-administered with sitagliptin on day 5 following a multiple-dose regimen for sitagliptin (200-mg q.d. ×6 days) in the other period.RESULTSThe geometric mean ratios and 90% confidence intervals [(glyburide + sitagliptin)/glyburide] for AUC0–∞ and Cmax were 1.09 (0.96, 1.24) and 1.01 (0.84, 1.23), respectively.CONCLUSIONSitagliptin does not alter the pharmacokinetics of glyburide in healthy subjects.WHAT IS ALREADY KNOWN ABOUT THIS SUBJECT- No data are available on the potential drug interaction of sitagliptin and glyburide.
- Sitagliptin belongs to a new class of drugs called DPP-4 inhibitors recently approved for the treatment of Type 2 diabetes.
WHAT THIS STUDY ADDS- Glyburide is a commonly used sulphonylurea medication to treat Type 2 diabetes.
- Combination therapy is often required to achieve adequate glucose control in Type 2 diabetes.
- Sitagliptin does not appear to interfere with glyburide pharmacokinetics and therefore may be potentially co-administered with glyburide for the treatment of Type 2 diabetes.
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Keywords: | DPP-4 glyburide MK-0431 pharmacokinetics sitagliptin |
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