Obesity, dyslipidemia and impaired glucose tolerance
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: - Male volunteers, 30 Caucasians, born in the Netherlands - Age: 35-50 years - BMI = 25 and = 30 kg/m2 - Plasma glucose levels 2 h after OGTT between 7.8 and 11 mM (e.g. impaired glucose tolerance) Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 30 F.1.3 Elderly (>=65 years) no F.1.3.1 Number of subjects for this age range
Exclusion criteria
Exclusion criteria: - Diabetes mellitus (determined on basis of oral glucose tolerance test (OGTT) defined by ADA criteria (22) - BMI > 30 kg/m2 or 11,1 - Use of medication known to influence glucose and/or lipid metabolism or BAT activity (e.g. beta blockers) - Any significant chronic disease - Renal, hepatic or endocrine disease - Smoking - Participation in an intensive weight-loss program or vigorous exercise program during the last year before the start of the study - Difficulties to insert an intravenous catheter - Recent participation in other research projects (within the last 3 months), participation in 2 or more projects in one year
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Main Objective: The main object of the trial is to evaluate the effect of sitagliptin treatment on BAT activity in overweight, pre-diabetic subjects.;Secondary Objective: The secondary objectives of the study are to assess the effect of sitagliptin treatment on 1) resting energy expenditure, 2) muscle glucose metabolism, 3) fat mass, 4) glucose metabolism and 5) plasma lipid levels in overweight, pre-diabetic subjects;Primary end point(s): BAT volume and activity measured by 18F-FDG PET-CT scan;Timepoint(s) of evaluation of this end point: Before and after 12 weeks of treatment | — |
Secondary
| Measure | Time frame |
|---|---|
| Timepoint(s) of evaluation of this end point: Before and after 12 weeks of treatment;Secondary end point(s): - Fasted thermoneutral and cold-induced REE by indirect calorimetric - Expression of several biomarkers for insulin signaling and glucose and lipid metabolism in skeletal muscle biopsies measured by RT-PCR and Western Blot - Body weight and fat mass measured by DXA scan - Fasting serum markers for glucose metabolism (glucose, insulin, HbA1c and C-peptide) - Fasting serum markers for lipid metabolism (total cholesterol, HDL-C, LDL-C, triglycerides, free fatty acids) | — |
Countries
Netherlands
Contacts
Leiden University Medical Center