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Updated: May 15, 2026

Hyperinsulinemic-euglycemic Clamps in Conscious, Unrestrained Mice
Published on: November 16, 2011
Extraglycemic effects of glp-1-based therapeutics: addressing metabolic and cardiovascular risks associated with type
Susan Herzlinger1, Edward S Horton
1Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, United States.
Context:
To examine whether widespread tissue expression of the glucagon-like peptide (GLP)-1 receptor supports the possibility of differential effects of GLP-1-based therapeutics on cardiac function, blood pressure, food intake, gastric emptying, and other regulatory activities. GLP-1 receptor agonists (RAs) have demonstrated pleiotropic effects on overweight/obesity, hypertension, dyslipidemia, and cardiovascular (CV) disease. Food-regulatory effects have been demonstrated in preclinical and clinical trials, including reduced gastric motility and food intake leading to body weight reductions. Native GLP-1 and GLP-1 RAs have demonstrated cardioprotective effects in preclinical models.
Evidence Acquisition:
Using PubMed, we performed a search of the recent literature on GLP-1 and GLP-1 RAs.
Evidence Synthesis:
Preliminary clinical data indicate native GLP-1 has beneficial effects on endothelial cell function and vascular inflammation. Native GLP-1 and GLP-1 RAs have demonstrated renoprotective and antihypertensive effects, and reductions in lipid parameters. The GLP-1 RA liraglutide has also demonstrated positive effects on such markers of endothelial dysfunction as tumor necrosis factor-α and plasminogen activator inhibitor-1.
Conclusion:
Preliminary data suggest GLP-1 RAs could benefit type 2 diabetes patients at risk for CV comorbidities. Additional studies are needed to confirm the extraglycemic and extrapancreatic effects and determine whether outcomes will translate into beneficial effects for patient care.
Insights
Glucagon-like peptide (GLP)-1 receptor agonists show promise for treating cardiovascular issues in type 2 diabetes patients. Further research is needed to confirm these beneficial effects for patient care.
Area of Science:
- Endocrinology
- Cardiology
- Metabolic Diseases
Background:
- Glucagon-like peptide (GLP)-1 receptor agonists (RAs) exhibit diverse effects on obesity, hypertension, and cardiovascular disease.
- GLP-1 RAs influence food intake and gastric emptying, contributing to weight reduction.
- Preclinical studies show native GLP-1 and GLP-1 RAs possess cardioprotective properties.
Purpose of the Study:
- To investigate if widespread GLP-1 receptor expression supports GLP-1-based therapeutics' effects on cardiac function, blood pressure, food intake, and gastric emptying.
- To explore the potential of GLP-1 RAs in managing cardiovascular comorbidities in type 2 diabetes.
Main Methods:
- A literature search was conducted using PubMed for studies on GLP-1 and GLP-1 RAs.
- Review of recent scientific literature on GLP-1 receptor agonists and their therapeutic effects.
Main Results:
- Preliminary data suggest native GLP-1 improves endothelial function and reduces vascular inflammation.
- GLP-1 RAs demonstrate renoprotective, antihypertensive, and lipid-lowering effects.
- Liraglutide, a GLP-1 RA, positively impacts markers of endothelial dysfunction, including TNF-α and PAI-1.
Conclusions:
- GLP-1 RAs may offer benefits for type 2 diabetes patients with cardiovascular risks.
- Further investigation is required to validate extraglycemic and extrapancreatic effects.
- Translating these findings into improved patient care necessitates additional clinical studies.
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