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  • Title: Preservation of brain nerve growth factor in mild cognitive impairment and Alzheimer disease.
    Author: Mufson EJ, Ikonomovic MD, Styren SD, Counts SE, Wuu J, Leurgans S, Bennett DA, Cochran EJ, DeKosky ST.
    Journal: Arch Neurol; 2003 Aug; 60(8):1143-8. PubMed ID: 12925373.
    Abstract:
    BACKGROUND: The status of nerve growth factor (NGF) levels during the prodromal phase of Alzheimer disease (AD), characterized by mild cognitive impairment (MCI), remains unknown. OBJECTIVE: To investigate whether cortical and/or hippocampal NGF levels are altered in subjects with MCI or different levels of AD severity. DESIGN AND MAIN OUTCOME MEASURES: An NGF enzyme-linked immunosorbent assay determined protein levels in the hippocampus and 5 cortical areas in people clinically diagnosed as having no cognitive impairment, MCI, mild AD, or severe AD. SETTING AND PATIENTS: Subjects were from the Rush Religious Orders Study and the University of Pittsburgh Alzheimer's Disease Research Center (Pittsburgh, Pa). RESULTS: We found no changes in cortical or hippocampal NGF levels across groups; in MCI, levels did not correlate with an increase in choline acetyltransferase activity in these regions. CONCLUSION: Brain NGF levels appear sufficient to support the cholinergic plasticity changes seen in MCI and remain stable throughout the disease course.
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