Hormonal
Chronic administration of the GLP-1 receptor agonist liraglutide leads to desensitization of its gastric emptying (GE) inhibitory effects, whereas its body weight-lowering effects persist without desensitization.
Long-acting GLP-1 medications like liraglutide work by changing how your brain regulates appetite, not by keeping food in your stomach. While you might feel nausea or slowed digestion initially, your body adapts to this GI effect, but the weight loss continues because the brain's hunger signals remain suppressed. This suggests the medication is effective for sustained weight management even after side effects subside.
The data suggest that the ‘gastric inhibitory’ GLP-1 receptors in rats are subject to desensitization/tachyphylaxis but that this effect is dependent on full 24-h exposure as obtained by liraglutide. The body weight-lowering effects of GLP-1 receptor stimulation are not subject to desensitization.
Why this rating
High-quality controlled animal study with clear pharmacokinetic profiling and statistical significance, though limited to rats.
Source
Liraglutide: short‐lived effect on gastric emptying—long lasting effects on body weight
Jacob Jelsing et al. · Diabetes Obesity and Metabolism · 2012
DOI 10.1111/j.1463-1326.2012.01557.x
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