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As a long-acting DPP-4 inhibitor administered orally once a week, trelagliptin can address the issues of frequent medication and poor compliance associated with traditional hypoglycemic drugs.
The Hypoxia model in rats was constructed at an altitude of approximately 4300 meters. The plasma concentration of trelagliptin was determined by LC-MS/MS. The biochemical indices and the protein expression levels of P-gp and OCT2 in the kidneys of rats were determined to explain the possible reasons for the pharmacokinetic changes of trelagliptin.
This study demonstrated that the pharmacokinetic parameters of trelagliptin were significantly changed in high-altitude hypoxic environments. Compared with the control group, the AUC, MRT, t1/2, and Vd were remarkably increased during acute and chronic hypoxia, while the CL and Ke were decreased. Additionally, the biochemical indexes and protein expression of P-gp and OCT2 were significantly altered.
The study demonstrated that high-altitude hypoxia significantly altered trelagliptin's pharmacokinetics, slowing clearance, prolonging elimination half-life and residence time, and increasing bioavailability. These changes suggested that the optimal therapeutic dosage of trelagliptin should be reassessed under hypoxic exposure.
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