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Subdiaphragmatic vagotomy reduces hypothalamic oxytocin expression and blood levels after oral MDMA administration in male rats.
Prog Neuropsychopharmacol Biol Psychiatry
January 2025
Chiba University Center for Forensic Mental Health, Chiba 260-8670, Japan. Electronic address:
3,4-Methylenedioxymethamphetamine (MDMA) is a widely recognized entactogen frequently used recreationally. It is known for its interaction with the serotonin and oxytocin systems, which underlie its entactogenic effects in humans. Recently, we demonstrated that the gut-brain axis, mediated by the subdiaphragmatic vagus nerve, contributes to MDMA-induced resilience enhancement in rodents.
View Article and Find Full Text PDFVagotomy suppresses food intake by increasing GLP-1 secretion via the M3 AChR-AMPKα pathway in mice.
Mol Cell Endocrinol
January 2025
Gastric Cancer Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China. Electronic address:
Objective: The gut-brain axis (GBA) is involved in the modulation of multiple physiological activities, and the vagus nerve plays an important role in this process. However, the association between vagus nerve function and nutritional regulation remains unclear. Here, we explored changes in the nutritional status of mice after vagotomy and investigated the underlying mechanisms responsible for these changes.
View Article and Find Full Text PDFNeuregulin 1 improved gastric motility and reduced gastric inflammation by activating the α7nAChR through the cholinergic anti-inflammatory pathway in diabetic rats.
Toxicol Appl Pharmacol
December 2024
Library of Jiaying University, Meizhou, China.
Diabetic gastroparesis (DGP), a prevalent complication of diabetes, is characterized by delayed gastric emptying and inflammation. The dorsal motor nucleus of the vagus (DMV) plays a crucial role in modulating gastric function via the vagus nerve. Neuregulin 1 (NRG1), which is present in the DMV and influences the autonomic nervous system, has an unclear role in DGP.
View Article and Find Full Text PDFGut-brain axis and environmental factors in Parkinson's disease: bidirectional link between disease onset and progression.
Neural Regen Res
December 2024
Department of Brain Science, Ajou University School of Medicine, Suwon, South Korea.
Parkinson's disease has long been considered a disorder that primarily affects the brain, as it is defined by the dopaminergic neurodegeneration in the substantia nigra and the brain accumulation of Lewy bodies containing alpha-synuclein protein. In recent decades, however, accumulating research has revealed that Parkinson's disease also involves the gut and uncovered an intimate and important bidirectional link between the brain and the gut, called the "gut-brain axis." Numerous clinical studies demonstrate that gut dysfunction frequently precedes motor symptoms in Parkinson's disease patients, with findings including impaired intestinal permeability, heightened inflammation, and distinct gut microbiome profiles and metabolites.
View Article and Find Full Text PDFThe unique role of fluoxetine in alleviating depression and anxiety by regulating gut microbiota and the expression of vagus nerve-mediated serotonin and melanocortin-4 receptors.
Biomed Pharmacother
January 2025
School of Pharmacy and Institute of New Drug Development, Jeonbuk National University Jeonju 54896, Republic of Korea. Electronic address:
Fluoxetine is a selective serotonin reuptake inhibitor (SSRI) widely used for depression, but its potential effects on gut microbiota regulation and vagus nerve-mediated serotonin receptor expression have not been well studied. We investigated changes in the gut microbiome regulated by fluoxetine and vagus nerve-mediated expression of several serotonin (5-HT) receptor types associated with anxiety and depression. Oral administration of fluoxetine alleviated lipopolysaccharide (LPS)-induced depressive and anxiety behaviors, increased 5-HT1A, 2 C, and melanocortin 4 (MC4) receptor expression, and the composition of Lactobacillus in mice's gut microbiome.
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