Benefits of liraglutide treatment in overweight and obese older individuals with prediabetes

Sun H Kim, Fahim Abbasi, Cindy Lamendola, Alice Liu, Danit Ariel, Patricia Schaaf, Kaylene Grove, Vanessa Tomasso, Hector Ochoa, Yeheng V Liu, Yii-Der Ida Chen, Gerald Reaven, Sun H Kim, Fahim Abbasi, Cindy Lamendola, Alice Liu, Danit Ariel, Patricia Schaaf, Kaylene Grove, Vanessa Tomasso, Hector Ochoa, Yeheng V Liu, Yii-Der Ida Chen, Gerald Reaven

Abstract

Objective: The aim was to evaluate the ability of liraglutide to augment weight loss and improve insulin resistance, cardiovascular disease (CVD) risk factors, and inflammation in a high-risk population for type 2 diabetes (T2DM) and CVD.

Research design and methods: We randomized 68 older individuals (mean age, 58±8 years) with overweight/obesity and prediabetes to this double-blind study of liraglutide 1.8 mg versus placebo for 14 weeks. All subjects were advised to decrease calorie intake by 500 kcal/day. Peripheral insulin resistance was quantified by measuring the steady-state plasma glucose (SSPG) concentration during the insulin suppression test. Traditional CVD risk factors and inflammatory markers also were assessed.

Results: Eleven out of 35 individuals (31%) assigned to liraglutide discontinued the study compared with 6 out of 33 (18%) assigned to placebo (P=0.26). Subjects who continued to use liraglutide (n=24) lost twice as much weight as those using placebo (n=27; 6.8 vs. 3.3 kg; P<0.001). Liraglutide-treated subjects also had a significant improvement in SSPG concentration (-3.2 vs. 0.2 mmol/L; P<0.001) and significantly (P≤0.04) greater lowering of systolic blood pressure (-8.1 vs. -2.6 mmHg), fasting glucose (-0.5 vs. 0 mmol/L), and triglyceride (-0.4 vs. -0.1 mmol/L) concentration. Inflammatory markers did not differ between the two groups, but pulse increased after liraglutide treatment (6.4 vs. -0.9 bpm; P=0.001).

Conclusions: The addition of liraglutide to calorie restriction significantly augmented weight loss and improved insulin resistance, systolic blood pressure, glucose, and triglyceride concentration in this population at high risk for development of T2DM and CVD.

Trial registration: ClinicalTrials.gov NCT01784965.

Figures

Figure 1
Figure 1
Proportion of individuals who lost at least 5, 7, and 10% of baseline weight. Liraglutide treatment was associated with greater degree of weight loss compared with placebo.
Figure 2
Figure 2
Insulin resistance (SSPG) at baseline and after 14 weeks of liraglutide or placebo treatment. Insulin resistance significantly improved following liraglutide treatment but not placebo.

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Source: PubMed

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