Telomere shortening in blood leukocytes of patients with posttraumatic stress disorder.

Author: Avetyan D1, Zakharyan R2, Petrek M3, Arakelyan A2
Author Information:
1Laboratory of Human Genomics and Immunomics, Institute of Molecular Biology National Academy of Sciences RA, Yerevan, Armenia; Department of Pathological Physiology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc, Czech Republic. Electronic address: d_avetyan@mb.sci.am.
2Laboratory of Human Genomics and Immunomics, Institute of Molecular Biology National Academy of Sciences RA, Yerevan, Armenia; Institute of Biomedicine and Pharmacy, Russian-Armenian University, Yerevan, Armenia.
3Laboratory of Immunogenomics, Department of Pathological Physiology, Faculty of Medicine and Dentistry, Institute of Molecular and Translational Medicine, Palacky University Olomouc, Olomouc, Czech Republic.
Conference/Journal: J Psychiatr Res.
Date published: 2019 Jan 21
Other: Volume ID: 111 , Pages: 83-88 , Special Notes: doi: 10.1016/j.jpsychires.2019.01.018. [Epub ahead of print] , Word Count: 217


Telomeres are protective fragments on chromosome ends involved in maintaining genome stability, preventing chromosomal fusions, regulation of cell division. It was shown that telomere attrition rate is accelerated in age-related diseases, as well as in response to physiological and psychosocial stress. The aim of this study was to evaluate relative leukocyte telomere length (LTL) in patients with post traumatic stress disorder (PTSD), as well as to investigate association of functional SNPs of telomerase TERC and TERT genes with LTL and PTSD. The relative LTL was measured by multiplex quantitative PCR method; genotyping of TERC rs12696304, TERT rs7726159 and rs2736100 was performed by PCR with sequence specific primers. Comparison of LTL in diseased and healthy subjects showed that PTSD patients had shorter average LTL than controls. Also, the frequency and the carriage rate of the TERT rs2736100*T allele was higher in PTSD patients compared to controls. Overall our results are in line with previous research in different populations. Furthermore, we have demonstrated that rs2736100 of TERT gene was significantly associated with PTSD and the minor allele of this polymorphism may be considered as a risk factor for PTSD in the Armenian population.

Copyright © 2019 Elsevier Ltd. All rights reserved.

KEYWORDS: PCR-SSP; PTSD; Posttraumatic stress disorder; Relative leukocyte telomere length; SNPs; TERC; TERT; Telomerase; qPCR

PMID: 30685566 DOI: 10.1016/j.jpsychires.2019.01.018

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