Lee Hae Won, Caramelli Paulo, Otaduy Maria Concepcion Garcia, Nitrini Ricardo, Leite Claudia da Costa
Department of Radiology, University of São Paulo School of Medicine.
Department of Neurology, University of São Paulo School of Medicine and Department of Internal Medicine, University Federal of Minas Gerais, Belo Horizonte.
Dement Neuropsychol. 2007 Jul-Sep;1(3):248-252. doi: 10.1590/S1980-57642008DN10300005.
To compare metabolite ratios in the posterior cingulate with the Mini-Mental State Examination (MMSE) test scores in patients with mild or moderate Alzheimer disease and in controls.
We evaluated 29 patients with mild or moderate Alzheimer disease and 15 controls by proton spectroscopy with the voxel located in the posterior cingulate. The MMSE was applied to all patients and controls. The metabolic ratios: N-acetyl-aspartate/creatine (Naa/Cr), mio-inositol/creatine (mI/Cr) and mio-inositol/N-acetyl-aspartate (mI/Naa) were obtained and then post-processed using the MRUI software (magnetic resonance user interface).
Correlation between Naa/Cr and mI/Naa ratios in the posterior cingulate with the MMSE was observed, and a positive correlation with Naa/Cr and negative correlation with mI/Naa were seen. The mI/r ratio presented no correlation with MMSE scores.
The positive correlation with Naa/Cr, and negative correlation with mI/Naa may corroborate that neuronal density/viability is associated to a higher MMSE score.
比较轻度或中度阿尔茨海默病患者及对照组后扣带回中的代谢物比率与简易精神状态检查表(MMSE)测试得分。
我们通过质子光谱法对29例轻度或中度阿尔茨海默病患者及15名对照者进行评估,体素位于后扣带回。对所有患者和对照者应用MMSE。获得代谢物比率:N-乙酰天门冬氨酸/肌酸(Naa/Cr)、肌醇/肌酸(mI/Cr)和肌醇/N-乙酰天门冬氨酸(mI/Naa),然后使用MRUI软件(磁共振用户界面)进行后处理。
观察到后扣带回中Naa/Cr和mI/Naa比率与MMSE之间存在相关性,与Naa/Cr呈正相关,与mI/Naa呈负相关。mI/Cr比率与MMSE得分无相关性。
与Naa/Cr呈正相关,与mI/Naa呈负相关,这可能证实神经元密度/活力与较高的MMSE得分相关。