| Health / Medical Topics |
Dihydroergotamine Mesylate
An ergot derivative with agonistic activity for alpha-adrenergic, serotonergic, and dopaminergic receptors. Dihydroergotamine mesylate most likely relieves migraine headaches by binding to and stimulating the 5-HT1D receptor subtype, thereby causing constriction of cerebral blood vessels. However, it has also been proposed that dihydroergotamine mesylate acts upon 5-HT1D receptors on sensory nerve endings of the trigeminal system, thereby decreasing the release of pro-inflammatory neuropeptide release. (NCI Thesaurus)
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