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Aim  To determine the glucose‐independent effect of the dipeptidyl peptidase‐4 (DPP‐4) inhibitor linagliptin versus the sulphonylurea glimepiride on systemic haemodynamics in the fasting and postprandial state in patients with type 2 diabetes (T2D).    Materials and Methods  In this prespecified secondary analysis of a phase IV, double‐blind trial, 46 metformin‐treated, overweight patients with T2D were included and randomly assigned (1:1) to once‐daily linagliptin (5 mg) or glimepiride (1 mg) for 8 weeks. In a sub‐study involving 26 patients, systemic haemodynamics were also assessed following a standardized liquid meal (Nutridrink Yoghurt style). Systemic haemodynamics (oscillometric device and finger photoplethysmography), arterial stiffness (applanation tonometry) and cardiac sympathovagal balance (heart rate variability [HRV]) were measured in the fasting state and repetitively following the meal. Ewing tests were performed in the fasting state.    Results  From baseline to week 8, linagliptin compared with glimepiride did not affect systemic haemodynamics, arterial stiffness or HRV in the fasting state. Linagliptin increased parasympathetic nervous activity, as measured by the Valsalva manoeuvre ( P  = .021) and deep breathing test ( P =  .027) compared with glimepiride. Postprandially, systolic blood pressure (SBP) dropped an average of 7.6 ± 1.6 mmHg. Linagliptin reduced this decrease to 0.7 ± 2.3 mmHg, which was significant to glimepiride ( P  = .010).    Conclusions  When compared with glimepiride, linagliptin does not affect fasting blood pressure. However, linagliptin blunted the postprandial drop in SBP, which could benefit patients with postprandial hypotension.

diabetes, obesity and metabolism

Effects of dipeptidyl peptidase‐4 inhibitor linagliptin versus sulphonylurea glimepiride on systemic haemodynamics in overweight patients with type 2 diabetes: A secondary analysis of an 8‐week, randomized, controlled, double‐blind trial