Summary
Migraine attacks follow circadian and circannual patterns driven by hypothalamic activity, melatonin dysregulation, and neuropeptides such as CGRP and PACAP, with PACAP also playing a role in light-based circadian entrainment. These findings suggest that light-based interventions targeting circadian alignment, and potentially PACAP pathways, could inform future approaches to migraine prophylaxis and timing of treatment.
Key Findings
- Migraine attacks show circadian and circannual rhythmicity, implicating the hypothalamus as a key hub for both pain processing and circadian regulation.
- Melatonin's prophylactic role in migraine is acknowledged but remains controversial based on current evidence.
- PACAP, a neuropeptide functionally similar to CGRP, is involved in circadian light entrainment and is identified as a potential therapeutic target following CGRP-based treatments.
- CGRP and PACAP are highlighted as molecular links between circadian biology and migraine pathophysiology, opening avenues for chronotherapeutic strategies.
Categories
Sleep & Circadian Health: Reviews the role of circadian and circannual rhythms, melatonin, and hypothalamic regulation in migraine attack timing and pathophysiology.
The Science of Light: Discusses PACAP's involvement in circadian entrainment to light and its potential as a therapeutic target, linking photoreceptor signaling pathways to migraine biology.
Author(s)
N Imai
Publication Year
2023
Related Publications
Sleep & Circadian Health
- Phototransduction by retinal ganglion cells that set the circadian clock
- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- The twoāprocess model of sleep regulation: a reappraisal
- Melanopsin is required for non-image-forming photic responses in blind mice
- Strange vision: ganglion cells as circadian photoreceptors
The Science of Light
- Phototransduction by retinal ganglion cells that set the circadian clock
- Color appearance models
- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- Diminished pupillary light reflex at high irradiances in melanopsin-knockout mice
- Melanopsin is required for non-image-forming photic responses in blind mice