Laboratory Animal and Comparative Medicine ›› 2023, Vol. 43 ›› Issue (2): 186-193.DOI: 10.12300/j.issn.1674-5817.2022.136

• Animal Models of Human Diseases • Previous Articles     Next Articles

Research Progress on Neuroprotective Effects and Mechanisms of Glucagon-like Peptide 1 Analogues in Alzheimer's Disease

Chenghan MEI(), Beibei CHEN()()   

  1. Guizhou Academy of Testing and Analysis, Guiyang 550000, China
  • Received:2022-08-30 Revised:2022-12-09 Online:2023-04-25 Published:2023-05-16
  • Contact: Beibei CHEN

Abstract:

Glucagon-like peptide 1 (GLP-1) is a kind of incretin produced in the intestinal with multiple pharmacological effects, which can stimulate insulin secretion effectively. Various GLP-1 analogues have been widely used in the treatment of type 2 diabetes mellitus. Alzheimer's disease (AD) is closely related to type 2 diabetes mellitus, with some common pathological features, such as insulin resistance, and epidemiological studies also showed that patients with type 2 diabetes mellitus have an increased risk of developing AD. GLP-1 analogues have shown beneficial effects in both preclinical animal research and clinical trials of AD. Therefore, the authors summarized the main characteristics of GLP-1 and AD, and analyzed the mechanisms of GLP-1 in preclinical AD studies of animal models. GLP-1 readily crosses the blood-brain barrier and exerts its neuroprotective effects by binding to and activating the widely distributed GLP-1 receptors (GLP-1Rs) in the brain, affecting multiple physiological and pathological processes including glucose metabolism, neuroinflammation, mitochondrial function, and cell proliferation. Insulin resistance and inflammation are key common pathways in AD and type 2 diabetes. GLP-1 may exert its neuroprotective effects by improving mitochondrial function and glycolysis, reducing oxidative stress levels, exerting anti-inflammatory and anti-apoptotic effects, inducing neurogenesis, and inhibiting glial cell proliferation. This paper maybe provide the reference for further study of GLP-1 analogues in AD, hoping to open new therapy venues for AD patients.

Key words: Glucagon-like peptide 1, Alzheimer's disease, Amyloid β-protein, Neuroprotective effect

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