Genetic mouse models of migraine

Area of Science:

• Neuroscience
• Genetics
• Migraine Pathophysiology

Background:

• Rare monogenic forms of migraine offer insights into primary brain dysfunction.
• Familial hemiplegic migraine (FHM) and related disorders provide genetic models for study.
• Understanding cellular and circuit mechanisms is crucial for migraine disorder research.

Purpose of the Study:

• To discuss migraine-relevant phenotypes and functional brain alterations in five genetic mouse models.
• To focus on specific models with mutations in a kinase, calcium channel, and Na/K ATPase.
• To explore insights into migraine pathophysiology and CSD ignition mechanisms.

Main Methods:

• Behavioral phenotyping of genetic animal models.
• Review of evidence for increased susceptibility to experimentally induced cortical spreading depression (CSD).
• Analysis of synaptic alterations in the cerebral cortex and trigeminovascular pain pathway.

Main Results:

• Increased susceptibility to CSD is a common phenotype across five genetic migraine models.
• Identified synaptic alterations in the cerebral cortex and trigeminovascular pathway.
• Supported the view of migraine as a disorder of brain circuit excitatory/inhibitory balance.

Conclusions:

• Genetic mouse models provide valuable insights into migraine pathophysiology.
• Dysfunctional regulation of brain circuit balance is implicated in migraine.
• Further research is required to identify specific dysfunctional circuits and CSD ignition mechanisms.