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Identification of a central CGRP circuit for trigeminal V1-mediated migraine-like pain in mice
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DOI：10.1093/brain/awag217.png)
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Abstract
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Migraine attacks can be provoked in people with underlying primary headache disorders by multiple peripheral mechanisms suggesting the possible convergence of trigeminal nociceptive inputs onto a common, unknown central circuit. As calcitonin gene-related peptide (CGRP) expressing cells in the parabrachial nucleus (PBN) have been implicated in nociplastic pains, we hypothesized that (a) PBN CGRP-expressing neurons and their projections to the central amygdala (CeA) may be an essential central relay of multiple peripheral inputs promoting injury-free migraine headache and (b) this pathway may prioritize threat from activation of cranial afferents over other nociceptive inputs.
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