Journal
BRAIN
Volume 143, Issue -, Pages 2681-2688Publisher
OXFORD UNIV PRESS
DOI: 10.1093/brain/awaa211
Keywords
migraine; headache: experimental models; headache: drug treatment; secondary headache; trigeminal ganglion
Categories
Funding
- Medical Research Council [MR/P006264/1]
- Wellcome Trust [104033]
- FP7 project EUROHEADPAIN [602633]
- Migraine Trust
- NIH [DA40688]
- Development and Promotion of Science and Technology Talents Project (DPST)
- Royal Thai Government
- MRC [MR/P006264/1] Funding Source: UKRI
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Medication overuse headache is estimated to affect 2% of the population, and is ranked in the top 20 most disabling disorders due to its high level of disability. Several therapies used in the treatment of acute migraine are thought to be associated with medication overuse headache, including opioids and triptans. With limited treatment options, it is critical to determine the risk profile of novel therapies prior to their widespread use. The current study explores the potential medication overuse risk of two novel therapeutic drug classes, namely the ditans: 5-HT1F receptor agonists, and the gepants: calcitonin gene-related peptide receptor antagonists, in a preclinical model of medication overuse. Persistent exposure of mice to the 5-HT1F agonist LY344864, but not olcegepant produced a significant reduction in hind paw and orofacial mechanical withdrawal thresholds as a surrogate readout of allodynia. In agreement, only LY344864 induced neuroplastic changes in trigeminal sensory afferents, increasing calcitonin gene-related peptide expression and basal trigeminal nociception. Our data highlight a differential medication overuse headache risk profile for the ditan and gepant classes of drugs that has important implications for their clinical use and patient education to help reduce the burden of medication overuse headache.
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