Amylin and calcitonin gene related peptide (CGRP) are related to the same peptide family. Both share 16 out of 37 amino acids and can activate each others receptor. CGRP is implicated in migraine pathophysiology but the role of Amylin and its receptor in migraine is not fully clarified.
Amylin is a peptide hormone that binds to a G-protein coupled receptor (GPCR). amylin was originally found in the pancreas (Beta Cell of Islets of Langerhans) but also shown to be present in the trigeminal ganglion, hind horn ganglia and perivascular nerve fibers. Amylin has many similarities with CGRP. Amylin and CGRP share 16 out 37 amino acids. Both peptides can activate the amylin 1 subtype (AMY1)receptor with high affinity and reported to have more similar physiological and pharmacological effects. In addition, both peptides increase the intracellular concentration of cyclic AMP (cAMP) which has a central role in migraine pathophysiology. The aim of the study is pin point the role of amylin and amylin receptor compare to CGRP in migraine pathophysiology.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
TRIPLE
Enrollment
36
Pramlintide is a amylin analog. It will be given intravenously at the rate of 120 micrograms over 20 minutes .
CGRP It will be given intravenously at the rate of 30 microgram over 20 minutes.
Danish Headache Center
Glostrup Municipality, Denmark
Migraine incidence
Before (-10 min) and after infusion (+12 hours) of amlyin compared with before and after infusion of CGRP based on questionnaire reported headache and associated symptoms
Time frame: 12 hours
Dilatation of Arteria radialis and arteria temporalis superficialis
Dermascan will be used to measure the above mentioned Radial and temporal arteries diameter.
Time frame: 2 hours
Facial flushing
Flushing will measured by laser contrast imaging
Time frame: 2 hours
Plasma blood samples
Measumrent of amylin and CGRP peptides in the plasma in picomol/L
Time frame: 2 hours
Headache intensity
Measured by visual analog score (VAS) ( 0 to 10). Change in area under curve (AUC)
Time frame: 12 hours
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