American journal of Alzheimer's disease and other dementias · 2012
Neuropsychological and neuroimaging markers in early versus late-onset Alzheimer's disease.
Сравнительное исследованиеСтатьяПоддержка NIH: внешняя программаПоддержка правительства СШАНазвание и аннотация: Перевод пока не подготовлен
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Kaiser Natalie C, Melrose Rebecca J, Liu Collin, Sultzer David L, Jimenez Elvira, Su Michael, Monserratt Lorena, Mendez Mario F
Аннотация
BACKGROUND: Early-onset Alzheimer's disease (EOAD) has been overshadowed by the more common late-onset AD (LOAD). Yet, the literature indicates EOAD may have less hippocampal-memory presentations and more focal neocortical localization early in the disease.
OBJECTIVE: To evaluate these proposed differences between these 2 forms of AD and to explore what they inform about differences in AD pathophysiology.
METHODS: In all, 21 patients with EOAD and 24 patients with LOAD matched for disease progression and severity were compared on neurocognitive measures and resting state fluorodeoxy-glucose positron-emission tomography (FDG-PET).
RESULTS: Patients with EOAD had worse executive functions with greater hypometabolism in the parietal regions; whereas patients with LOAD had worse confrontation naming and verbal recognition memory with greater hypometabolism in inferior frontotemporal regions.
CONCLUSIONS: In addition to highlighting significant differences between EOAD and LOAD, these results reveal dissociation between executive deficits in AD and frontal hypometabolism, suggesting early disturbances of the parietal-frontal network in EOAD.
OBJECTIVE: To evaluate these proposed differences between these 2 forms of AD and to explore what they inform about differences in AD pathophysiology.
METHODS: In all, 21 patients with EOAD and 24 patients with LOAD matched for disease progression and severity were compared on neurocognitive measures and resting state fluorodeoxy-glucose positron-emission tomography (FDG-PET).
RESULTS: Patients with EOAD had worse executive functions with greater hypometabolism in the parietal regions; whereas patients with LOAD had worse confrontation naming and verbal recognition memory with greater hypometabolism in inferior frontotemporal regions.
CONCLUSIONS: In addition to highlighting significant differences between EOAD and LOAD, these results reveal dissociation between executive deficits in AD and frontal hypometabolism, suggesting early disturbances of the parietal-frontal network in EOAD.