Distinct Gut-Brain Axis Dysregulation in Episodic Versus Chronic Migraine: Insights from NTG-Induced Mouse Models.

ABSTRACT: The gut-brain axis regulates brain functions and maintains central nervous system homeostasis and intestinal balance. Migraine patients often present with gastrointestinal (GI) comorbidities, with stronger associations observed in chronic migraine (CM) than in episodic migraine (EM). To investigate migraine-related GI alterations, nitroglycerin (NTG)-induced mouse models of EM (N = 15) and CM (N = 15) were established using single or repeated NTG injections (10 mg/kg). EM mice were euthanized 4 h after a single injection, whereas CM mice received NTG every other day for 9 days and were euthanized after the fifth injection. On the day of sacrifice, GI tissues were analyzed for morphological changes, cytokine expression, calcitonin gene-related peptide (CGRP) levels, and immune cell profiles

SUBMITTER: Shin DC 

PROVIDER: S-EPMC12607510 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature