Glucagon-like Peptide-1 Receptor Agonists Cardio-protective Effects: An Umbrella Review

Asim Ahmed Elnour1, Noora Al Hajri2, Israa Yousif El Khidir3

  • 1College of Pharmacy, Al Ain University, Al Ain, United Arab Emirates.

Abstract

Insights

Glucagon-Like Peptide-One Receptor Agonists (GLP-1 RAs) show clear cardioprotective effects in diabetes patients with varying cardiovascular risk. However, evidence for those with high cardiovascular risk or existing heart disease is limited, suggesting personalized treatment approaches are needed.

Area of Science:

  • Cardiology
  • Endocrinology
  • Pharmacology

Background:

  • Focus on the cardioprotective effects of Glucagon-Like Peptide-One Receptor Agonists (GLP-1 RAs).
  • Investigating the role of GLP-1 RAs in reducing cardiovascular risk in type 2 diabetes mellitus patients.

Purpose of the Study:

  • Critically appraise seven meta-analyses of randomized clinical trials (RCTs) on GLP-1 RAs in diabetes.
  • Evaluate the primary outcome of major cardiovascular events associated with GLP-1 RA use.

Main Methods:

  • Systematic review and critical appraisal of seven meta-analyses.
  • Analysis based on PICO: 138,750 participants, GLP-1 RA intervention, placebo comparator, major cardiovascular events outcome.

Main Results:

  • Overall evidence supports GLP-1 RAs' cardioprotective effect in diabetes patients across various cardiovascular risk levels.
  • Most meta-analyses did not demonstrate significant cardioprotection in high-risk diabetes patients or those with pre-existing cardiovascular disease.
  • Patient variability and drug potency are crucial for successful GLP-1 RA selection.

Conclusions:

  • Future RCTs for GLP-1 RAs in diabetes should stratify participants by cardiovascular risk (high, moderate, low) and history of cardiovascular disease.
  • Subgroup analyses are essential to understand differential effects of GLP-1 RAs based on patient characteristics.

Related Concept Videos

Glucagon-like Receptor Agonists01:24

Glucagon-like Receptor Agonists

Incretins include glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), which stimulate insulin secretion post-meals. In type 2 diabetes, GIP's efficacy is reduced, making GLP-1 a viable drug target. GIP originates from preproGIP.
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by...
735
Hypoglycemia and Glucagon01:15

Hypoglycemia and Glucagon

Without prolonged fasting, healthy individuals maintain blood glucose levels above 3.5 mM due to a well-adapted neuroendocrine counterregulatory system that effectively prevents acute hypoglycemia, a potentially life-threatening condition. The primary clinical scenarios for hypoglycemia encompass diabetes treatment, inappropriate production of endogenous insulin or insulin-like substances by tumors, and the use of glucose-lowering agents in non-diabetic individuals. Notably, hypoglycemia in the...
712
Oral Hypoglycemic Agents: α-Glucosidase Inhibitors01:19

Oral Hypoglycemic Agents: α-Glucosidase Inhibitors

α-glucosidase inhibitors, including acarbose (Precose), miglitol (Glyset), and voglibose (Voglib) (primarily available in Asia), are drugs that control blood sugar levels by delaying the digestion of starch and disaccharides. They achieve this by inhibiting α-glucosidase enzymes in the intestine, which slow the absorption of carbohydrates in the intestine, which in turn leads to a prolonged release of the glucoregulatory hormone GLP-1 from intestinal L-cells.
Acarbose and miglitol are...
453
Oral Hypoglycemic Agents: Glinides01:06

Oral Hypoglycemic Agents: Glinides

Repaglinide (Prandin) and Nateglinide (Starlix), known as glinides, are oral insulin secretagogues that stimulate insulin release from pancreatic β cells by closing the ATP-sensitive potassium channels (KATP channel). Repaglinide controls insulin release from pancreatic β cells by managing potassium efflux. It shares two binding sites with sulfonylureas and also has a unique site, indicating overlapping mechanisms of action. With a rapid onset and a 4-7 hour duration, it effectively...
493
Oral Hypoglycemic Agents: Biguanides and Glitazones01:26

Oral Hypoglycemic Agents: Biguanides and Glitazones

Biguanides, particularly metformin (Glucophage), are insulin sensitizers that enhance glucose uptake, thereby reducing insulin resistance. Unlike sulfonylureas, metformin doesn't prompt insulin secretion, which helps to curb hypoglycemia risk. Metformin is beneficial in treating conditions like polycystic ovary syndrome due to its insulin-resistance reduction capability. The drug's primary action involves curtailing hepatic gluconeogenesis, a significant contributor to high blood...
526
Dipeptidyl Peptidase 4 Inhibitors01:23

Dipeptidyl Peptidase 4 Inhibitors

Dipeptidyl peptidase 4 (DPP-4) is a serine protease widely distributed in the body. It's involved in the inactivation of GLP-1 and GIP hormones, which are crucial for insulin regulation. DPP-4 inhibitors, such as sitagliptin (Januvia), saxagliptin (Onglyza), linagliptin (Tradjenta), alogliptin (Nesina), and vildagliptin (Galvus), help increase the proportion of active GLP-1, enhancing insulin secretion. These inhibitors work by competitively binding to DPP-4. This binding causes a...
470