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Related Concept Videos

Glucagon-like Receptor Agonists01:24

Glucagon-like Receptor Agonists

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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...
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Glucose transporters facilitate the transport of glucose across the cell membrane. In addition to glucose, some glucose transporters can also aid the movement of other hexoses such as fructose, mannose, and galactose.
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Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
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Regulation of Food Intake01:30

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Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...
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Transcellular transport of solutes is the movement of substances like monosaccharides and amino acids through polarized cells. This transport mechanism is primarily seen in epithelial and endothelial cells aided by membrane transport proteins such as channels and transporters. The tight junctions between these cells confine the membrane proteins to the two sides of the cell. The epithelial cells have distinct apical and basolateral domains. In contrast, the endothelial cells show the luminal...
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Related Experiment Video

Updated: May 16, 2025

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Oxyntomodulin - past, present and future.

Jens Juul Holst1, Mette M Rosenkilde2

  • 1The NovoNordisk Foundation Center for Basic Metabolic Research, Denmark; Department of Biomedical Sciences, the Panum institute, University of Copenhagen, Denmark.

Peptides
|April 5, 2025
PubMed
Summary

Oxyntomodulin, a gut peptide, shows promise for treating metabolic dysfunction-associated steatotic liver disease (MASLD). Its dual action inspires new glucagon-GLP-1 co-agonists for weight loss and liver fat reduction.

Keywords:
Co-agonistsGLP-1GlicentinGlucagonWeight loss

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Area of Science:

  • Endocrinology
  • Gastroenterology
  • Metabolic Diseases

Background:

  • Glucagon's gastrointestinal origin suggested by L-cells containing glucagon-like immunoreactivity.
  • Presence of glicentin and oxyntomodulin peptides, both containing the full glucagon sequence, in L-cells.
  • Oxyntomodulin, a glicentin fragment, interacts with glucagon and GLP-1 receptors, influencing appetite and food intake.

Purpose of the Study:

  • To explore the therapeutic potential of oxyntomodulin and its derivatives.
  • To investigate the efficacy of glucagon-GLP-1 co-agonists in treating metabolic disorders.
  • To assess the impact of these co-agonists on weight loss and hepatic steatosis.

Main Methods:

  • Analysis of peptide interactions with glucagon and GLP-1 receptors.
  • Human studies on oxyntomodulin's effects on appetite and food intake.
  • Clinical development of long-acting glucagon-GLP-1 co-agonists.

Main Results:

  • Oxyntomodulin demonstrated appetite and food intake inhibition in humans.
  • Glucagon-GLP-1 co-agonists achieve additive weight loss.
  • Co-agonists stimulate hepatic lipid metabolism, showing effectiveness in hepatic steatosis.

Conclusions:

  • Oxyntomodulin's properties have inspired the development of promising glucagon-GLP-1 co-agonists.
  • These co-agonists offer a dual therapeutic approach for weight management and metabolic health.
  • Potential for effective treatment of metabolic dysfunction-associated steatotic liver disease (MASLD).