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APOE and spatial navigation in amnestic MCI: results from a computer-based test

J. Laczó, R. Andel, M. Vyhnalek, K. Vlcek, Z. Nedelska, V. Matoska, I. Gazova, I. Mokrisova, K. Sheardova, J. Hort,

. 2014 ; 28 (5) : 676-84.

Jazyk angličtina Země Spojené státy americké

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/bmc15023471

OBJECTIVE: We investigated the association between APOE ε4 status and spatial navigation in patients with amnestic mild cognitive impairment (aMCI) and assessed the role of hippocampal volume in this association. METHOD: Participants were 74 patients with clinically confirmed aMCI (33 APOE ε4 noncarriers, 26 heterozygous, and 15 homozygous ε4 carriers). Body-centered (egocentric) and world-centered (allocentric) spatial navigation in a computerized human analogue of the Morris Water Maze was assessed. Brain MRI with subsequent automated hippocampal volumetry was included. RESULTS: Groups were similar in neuropsychological profile. Controlling for age, sex, education, and free memory recall, the APOE ε4 carriers performed more poorly on all spatial navigation subtasks (ps < .05). APOE ε4 homozygotes performed worse than heterozygotes (p = .021). Right hippocampal volume accounted for the differences in allocentric and delayed subtasks (ps > .05), but not in the egocentric subtask (p < .001). CONCLUSIONS: Using an easy-to-use, computer-based tool to assess spatial navigation, we found spatial navigation deficits to worsen in a dose-dependent manner as a function of APOE ε4 status. This was at least partially due to differences in right hippocampal volume.

Citace poskytuje Crossref.org

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