title: Neurotransmitter changes in early- and late-onset Alzheimer-type dementia.
abstract: Neurotransmitter-related markers were examined in Alzheimer-type dementia (ATD) and studied whether or not there is biochemical difference between the early- and late-onset sub-groups. Postmortem brains were obtained from neuropathologically diagnosed ATD patients and control subjects with no clinico-neuropathological findings indicative of neuropsychiatric diseases. Neurochemical data in the early- and late-onset groups were compared to the age-matched younger and older control groups, respectively, and expressed as a percentage of the mean value in the respective controls. Choline acetyltransferase activity and concentrations of serotonin and noradrenaline were more severely depleted in the early-onset ATD group than in the late-onset ATD group. These findings indicative of heterogeneity of ATD patients were discussed from the pathogenetic and therapeutic viewpoints.
authors.affiliation: Department of Psychiatry, Juntendo University School of Medicine, Tokyo, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Arai
authors.forename: Y
authors.initials: Y
authors.lastname: Ichimiya
authors.forename: K
authors.initials: K
authors.lastname: Kosaka
authors.forename: T
authors.initials: T
authors.lastname: Moroji
authors.forename: R
authors.initials: R
authors.lastname: Iizuka
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000378:metabolism; D000544:Alzheimer Disease / Q000378:metabolism*; D001923:Brain Chemistry; D002795:Choline O-Acetyltransferase / Q000378:metabolism; D006719:Homovanillic Acid / Q000378:metabolism; D006801:Humans; D006897:Hydroxyindoleacetic Acid / Q000378:metabolism; D008875:Middle Aged; D018377:Neurotransmitter Agents / Q000378:metabolism*; D009638:Norepinephrine / Q000378:metabolism; D012701:Serotonin / Q000378:metabolism
chemical_list: D018377:Neurotransmitter Agents; D012701:Serotonin; D006897:Hydroxyindoleacetic Acid; D002795:Choline O-Acetyltransferase; D009638:Norepinephrine; D006719:Homovanillic Acid