title: Platelet monoamine oxidase activity in patients with Huntington's disease.
abstract: 1. Platelet monoamine oxidase (MAO) activity was investigated in 30 patients with Huntington's disease and compared with the activity in a control group. 2. Significantly elevated activity was found in the patients (P less than 0.05; t-test) when same sex contrasts were carried out to account for the well known influence of sex on MAO activity. 3. The mean MAO activity in male patients was 23.5 +/- 6.0 nmol/mg protein per h and female patients was 29.5 +/- 8.9 nmol/mg protein per h using tyramine as the substrate. 4. The possible influence of environmental factors on the results is discussed.
mesh_terms: D000293:Adolescent; D000328:Adult; D001792:Blood Platelets / Q000201:enzymology*; D005260:Female; D006801:Humans; D006816:Huntington Disease / Q000201:enzymology*; D008297:Male; D008875:Middle Aged; D008995:Monoamine Oxidase / Q000097:blood*; D012907:Smoking / Q000378:metabolism
chemical_list: D008995:Monoamine Oxidase