Glucagon-like peptide-1 (GLP-1), derived from proglucagon, is thought to act as a negative regulator of energy homeostasis in mammals, since intracerebroventricular (ICV) injection of GLP-1 inhibits feeding behavior and enhances energy expenditure. The anorexigenic effect of GLP-1 is also observed in chicks, but whether brain GLP-1 enhances energy expenditure has not been investigated. The aim of the present study was to clarify the effect of ICV injection of GLP-1 on energy expenditure as well as metabolic changes in chicks. The injection of GLP-1 did not affect energy expenditure calculated from oxygen consumption and carbon dioxide production. On the other hand, the injection of GLP-1 significantly decreased respiratory quotient, suggesting that brain GLP-1 shifted the use of energy sources from carbohydrates to lipids. In support of this, ICV injection of GLP-1 increased plasma non-esterified fatty acid concentration while plasma glucose concentration was decreased. In conclusion, GLP-1 appears to act in the brain as a metabolic modulator rather than as a regulator of total energy expenditure in chicks.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.cbpa.2007.03.023 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Hypoglycemic effect of -pMTL007-GLP-1 engineered probiotics on type 2 diabetes mellitus.
Gut Microbes
December 2025
School of Pharmacy, Jiangxi Medical College, Nanchang University, Nanchang, China.
Diabetes mellitus (DM) is a complex metabolic disease characterized by hyperglycemia. Recently, the incidence of diabetes has increased exponentially, and it is estimated to become the seventh leading cause of global mortality by 2030. Glucagon-like peptide-1 (GLP-1), a hormone derived from the intestine, has been demonstrated to exert remarkable hypoglycemic effects.
View Article and Find Full Text PDFDeterminants of Liraglutide Treatment Discontinuation in Type 1 Diabetes: A Post Hoc Analysis of ADJUNCT ONE and ADJUNCT TWO Randomized Placebo-Controlled Clinical Studies.
J Diabetes Sci Technol
December 2024
Clinical Diabetes, Appetite and Metabolism Laboratory, Garvan Institute of Medical Research, Sydney, NSW, Australia.
Introduction: Two phase 3 randomized controlled studies (ADJUNCT ONE (Clinicaltrials.gov: NCT01836523), ADJUNCT TWO (Clinicaltrials.gov: NCT02098395)) evaluated liraglutide (1.
View Article and Find Full Text PDFSafety and efficacy of GLP-1/FGF21 dual agonist HEC88473 in MASLD and T2DM: a randomized, double-blind, placebo-controlled study.
J Hepatol
December 2024
Phase I Clinical Trial Center, The First Hospital of Jilin University, Changchun, 130021, Jilin Province, China. Electronic address:
Background And Aims: Glucagon-like peptide-1 (GLP-1) and fibroblast growth factor 21 (FGF21) are key regulators of glucose and lipid metabolism. In the present study, we assessed the safety and efficacy of a novel GLP-1/FGF21 dual agonist HEC88473 for the treatment of metabolic dysfunction-associated steatotic liver disease (MASLD) combined with type 2 diabetes mellitus (T2DM).
Methods: This was a randomized, double-blind, placebo-controlled, multiple-ascending-dose phase 1b/2a trial.
Effectiveness for adding or switching from other incretin-related drugs to oral semaglutide in type 2 diabetes.
J Diabetes Investig
December 2024
Division of Diabetology and Metabolism, Department of Internal Medicine, Tokyo Women's Medical University School of Medicine, Tokyo, Japan.
Aims/introduction: This study aimed to evaluate and compare the effectiveness of oral semaglutide after adding to or switching from incretin-related drugs by assessing the changes in HbA1c and body weight (BW) in participants with type 2 diabetes in clinical settings.
Materials And Methods: A total of 368 participants were divided into groups according to antidiabetic medications before oral semaglutide treatment; incretin-related drug-naïve (naïve), switching from dipeptidyl peptide-4 inhibitors (DPP-4i) or glucagon-like peptide-1 receptor agonist (GLP-1 RA) groups. Adjusted mean changes in HbA1c and BW at 6 months after oral semaglutide administration were compared among the three groups.
Adipose Tissue, Regeneration, and Skin Health: The Next Regenerative Frontier.
Aesthet Surg J Open Forum
November 2024
Adipose tissue, or fat compartments, has long been considered a storage depot and an energy source. However, a large part of new research, starting with the discovery of adipose-derived stem cells, has redirected this thinking toward the tremendous regenerative capacity that adipose tissue possesses when it is healthy. This has resulted in multiple technologies being explored with fat as a basis or with fat as a target aiming at the stimulation of new small hyperplastic adipose cells exuding adipokines and encouraging the proliferation of a whole host of progenitor cells that can have positive effects on many organ systems.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!