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- W2156047574 abstract "Aim: To explore a possible relationship between vasodilatation and delayed headache we examined the effect of pituitary adenylate cyclase-activating polypeptide-38 (PACAP38) on the middle meningeal artery (MMA) and middle cerebral artery (MCA) using high resolution magnetic resonance angiography (MRA). Methods: In a double-blind, randomized, placebo-controlled study 14 healthy volunteers were scanned repeatedly after infusion (20 min) of 10 pmol/kg/min PACAP38 or placebo. In addition, four participants were scanned following subcutaneous sumatriptan (6 mg). Results: We found significant dilatation of the MMA (p = 0.00001), but not of the MCA (p = 0.50) after PACAP38. There was no change after placebo (p > 0.40). Vasodilatation (range 16–23%) lasted more than 5 h. Sumatriptan selectively contracted the MMA by 12.3% (p = 0.043). Conclusion: PACAP38-induced headache is associated with prolonged dilatation of the MMA but not of the MCA. Sumatriptan relieves headache in parallel with contraction of the MMA but not of the MCA." @default.
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- W2156047574 date "2011-12-15" @default.
- W2156047574 modified "2023-10-14" @default.
- W2156047574 title "Headache and prolonged dilatation of the middle meningeal artery by PACAP38 in healthy volunteers" @default.
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- W2156047574 doi "https://doi.org/10.1177/0333102411431333" @default.
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