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- W1989083044 abstract "The apolipoprotein E (APOE) gene σ4 allele is known to be associated with late-onset familial and sporadic Alzheimer’s disease (AD). We assessed the possible relationship between APOE genotypes and morphological or functional changes in AD brains by x-ray computed tomography (CT), magnetic resonance imaging (MRI) and Xe-133 single photon emission CT (SPECT). First, we estimated the change in size of the whole brain and total ventricular system by using two x-ray CT indices, the cerebral index (CI) and ventricular index (VI), respectively. Neither CI nor VI differed significantly among APOE genotypes. Then, we focused on the inferior temporal lobe regions by introducing new MRI indices, the inferior temporal index (ITI), temporal horn index (THI) and infero-medial temporal index (IMTI). We found a significant difference in each MRI index among APOE subgroups; ITI and IMTI were lower, while THI was higher in AD patients with at least one APOE σ4 allele (σ4+ group) than in those without such an allele (σ4– group). Finally, we compared relative regional cerebral blood flow (rCBF) of Xe-133 SPECT among the AD subgroups. Relative rCBF in the cerebral cortex, particularly in the temporal lobe, was lower in the σ4+ group than in the σ4– group. These results indicate that possession, and thus expression, of the APOE σ4 allele affects preferentially the inferior temporal lobe, encompassing the hippocampus and amygdala, in AD patients." @default.
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- W1989083044 date "1998-01-01" @default.
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- W1989083044 title "Inferior Temporal Lobe Atrophy and APOE Genotypes in Alzheimer’s Disease" @default.
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- W1989083044 doi "https://doi.org/10.1159/000017029" @default.
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