relation: http://eprints.imtlucca.it/3328/ title: Pattern of cerebral metabolic interactions in a subject with isolated amnesia at risk for Alzheimer's disease: A longitudinal evaluation creator: Pietrini, Pietro creator: Azari, Nina P. creator: Grady, Cheryl L. creator: Salerno, Judith A. creator: Gonzales-Aviles, A. creator: Heston, L. L. creator: Pettigrew, Karen D. creator: Horwitz, Barry creator: Haxby, James V. creator: Schapiro, Mark B. subject: RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry description: A pattern of reduced cerebral metabolic rate for glucose (rCMRglc) has been shown by positron emission tomography (PET) in patients with dementia of the Alzheimer type. To verify if a similar rCMRglc pattern is present in subjects 'at risk' for Alzheimer's disease (AD), we used high-resolution PET to longitudinally study a subject with isolated memory impairment and a family history for autosomal dominant AD. Initial rCMRglc data did not reveal any consistent abnormality as compared to a group of sex- and age-matched healthy controls. However, 1 year later, a follow-up evaluation did reveal reduced parietal rCMRglc values coinciding with a worsening of cognitive impairment, which suggested that standard analyses of resting rCMRglc data may not be useful in the early diagnosis of AD. In contrast, when a previously determined discriminant function for distinguishing controls from AD patients was applied, the subject was correctly identified as an AD patient on both PET scans. publisher: Karger date: 1993 type: Article type: PeerReviewed identifier: Pietrini, Pietro and Azari, Nina P. and Grady, Cheryl L. and Salerno, Judith A. and Gonzales-Aviles, A. and Heston, L. L. and Pettigrew, Karen D. and Horwitz, Barry and Haxby, James V. and Schapiro, Mark B. Pattern of cerebral metabolic interactions in a subject with isolated amnesia at risk for Alzheimer's disease: A longitudinal evaluation. Dementia, 4 (2). pp. 94-101. ISSN 1013-7424 (1993) relation: http://www.karger.com/Article/Abstract/107349 relation: 10.1159/000107349