title: A study of the activity of platelet monoamine oxidase in patients with migraine headaches or with 'cluster headaches'.
abstract: The results of the study of the activity of platelet monoamine oxidase (MAO) in patients with migraine headaches or with 'cluster headaches' are presented. In both types of headaches, MAO activity is lower than in normal subjects. We suggest that the low MAO activity is due to a primary constitutional defect.
mesh_terms: D000293:Adolescent; D000328:Adult; D001792:Blood Platelets / Q000201:enzymology*; D005260:Female; D006261:Headache / Q000201:enzymology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000201:enzymology*; D008995:Monoamine Oxidase / Q000097:blood*; D012701:Serotonin / Q000097:blood
chemical_list: D012701:Serotonin; D008995:Monoamine Oxidase