sAPP;
alpha-sAPP;
mild cognitive impairment;
Alzheimer disease;
CSF;
major depression;
D O I:
10.1016/j.biopsych.2005.09.007
中图分类号:
Q189 [神经科学];
学科分类号:
071006 ;
摘要:
Background: Cerebrospinalfluid (CSF) levels of soluble amyloid precursor protein (sAPP) and its alpha-secreted form (alpha-sAPP) were investigated as a means to distinguish between individuals with mild cognitive impairment(MCI) and Alzheimer-type dementia (DAT) and those with major depressive episode (4/01.) showing secondary memory deficits. Methods: Twenty-seven patients with MCI, 32 with probable DAT and 24 with MDE attending a memory clinic were studied. Cerebrospinalfluid levels of sAPP/amyloid precursor-like protein 2 (APLP2) and alpha-sAPP were detected by Western blotting. Results: Patients with MDE bad the highest CSF levels of total sAPP/APLP2 as compared With MCI and DAT patients (p <.001); sAPP/APLP2 levels were higher in MCI than in DAT subjects. Whereas alpha-sAPP levels did not differ between the the MCI and DAT groups, median levels of this peptide were significantly lower in MCI and DAT versus MDE patients. Conclusions: Soluble amyloid precursor protein/APLP2 and alpha-sAPP concentrations in CSF can differentiate between DAT and MCI versus MDE, facilitating early ameliorative interventions and appropriate treatment regimens.