期刊
BRAIN RESEARCH
卷 1003, 期 1-2, 页码 26-35出版社
ELSEVIER
DOI: 10.1016/j.brainres.2003.11.074
关键词
Alzheimer disease; mild cognitive impairment; proton magnetic resonance spectroscopy; brain metabolite
Structures of the medial temporal lobes are recognized to play. a central role in memory processing and to be the primary sites of deterioration in Alzheimer disease (AD). Mild cognitive impairment (MCI) represents potentially an intermediate state between normal aging and AD. Proton magnetic resonance spectroscopy (MRS) was used to examine brain metabolic changes in patients with AD and MCI in the medial temporal lobes (MTLs), parietotemporal cortices (PTCs) and prefrontal cortices (PFCs). Fourteen patients with MCI, 14 patients with mild AD and 14 age- and sex-matched control subjects were studied. Patients with AD and MCI demonstrated significant reductions of NAA/H2O and Cho/H2O in the left MTL relative to control subjects. Patients with AD showed ml/H2O increases relative to patients with MCI and control subjects in all six regions investigated, and a statistically significant ml/H2O increase was measured in the right PTC. Patients with AD and MCI demonstrated the same metabolic pattern in the left MTL, suggesting a similar pathological process underlying memory impairment. Increased mI signal appears to be a neurochemical abnormality associated mostly with AD and the dementia process. Some interhemispheric metabolite asymmetries were increased in AD patients. (C) 2004 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据