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Current Alzheimer Research

Editor-in-Chief

ISSN (Print): 1567-2050
ISSN (Online): 1875-5828

Alterations of the X Chromosome in Lymphocytes of Alzheimer’s Disease Patients

Author(s): Biljana Spremo-Potparevic, Vladan Bajic, George Perry and Lada Zivkovic

Volume 12, Issue 10, 2015

Page: [990 - 996] Pages: 7

DOI: 10.2174/1567205012666151027124154

Price: $65

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Abstract

Chromosomal alterations as a sign of genetic instability are a feature of Alzheimer’s disease (AD). Assessment of the genetic instability of non-neuronal cells of AD patients may provide a method to diagnose or monitor prognosis of the disease. Considering the importance of X chromosome alterations in the possible etiology of AD females, we used fluorescent in situ hybridization (FISH) for the centromere region of the X chromosome to determine aneuploidy, for a possible correlation with premature centromere division (PCD, X) in lymphocytes of AD females and age-matched controls. In AD patients, our results showed a marked and significant increase in the frequency of the X chromosome aneuploidy comparing with age matched controls (p<0.001). Also, a significant difference was detected in the PCD, X frequency between AD females when compared with age matched controls (p<0.001). In addition, a strong (R2=0.97, n=20) and significant (p<0.001) correlation was found between the frequency of aneuploidy and PCD, X in the AD group. Our results support the view that AD is a generalized systematic disease where PCD is to be considered as a stable sign of disease leading to aneuploidy.

Keywords: Alzheimer’s disease, aneuploidy, FISH, peripheral blood lymphocytes, PCD, X chromosome.

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