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Article type: Short Communication
Authors: Nelson, Peter T.; * | Wang, Wang-Xia
Affiliations: Department of Pathology and Division of Neuropathology, University of Kentucky Medical Center and Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, USA
Correspondence: [*] Correspondence to: Peter T. Nelson, MD, PhD, Department of Pathology, Division of Neuropathology and the Sanders-Brown Center on Aging, Room 311, Sanders-Brown Center Building, 800 S. Limestone, University of Kentucky, Lexington, KY 40536-0230, USA. Tel.: +1 859 257 1412 x 254; Fax: +1 859 257 6054; E-mail: pnels2@email.uky.edu.
Abstract: MiR-107 is a microRNA (miRNA) that we reported previously to have decreased expression in the temporal cortical gray matter early in the progression of Alzheimer's disease (AD). Here we study a new group of well-characterized human temporal cortex samples (N=19). MiR-107 expression was assessed, normalized to miR-124 and let-7a. Correlation was observed between decreased miR-107 expression and increased neuritic plaque counts (P< 0.05) and neurofibrillary tangle counts (P< 0.02) in adjacent brain tissue. Adjusted miR-107 and BACE1 mRNA levels tended to correlate negatively (trend with regression P< 0.07). In sum, miR-107 expression tends to be lower relative to other miRNAs as AD progresses.
Keywords: Amyloid, metabolism, neurodegeneration, noncoding, RTqPCR, tau
DOI: 10.3233/JAD-2010-091603
Journal: Journal of Alzheimer's Disease, vol. 21, no. 1, pp. 75-79, 2010
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