Home General Physiology and Biophysics 2021 General Physiology and Biophysics Vol.40, No.5, p. 365–376, 2021

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Founded: 1982
ISSN 1338-4325 (online)
ISSN 0231-5882 (print)
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General Physiology and Biophysics Vol.40, No.5, p. 365–376, 2021

Title: Evaluation of 5-HTTLPR (insertion/deletion) and BDNF (rs6265) genetic variations in the Slovakian individuals suffering from affective disorders
Author: Aneta Bednarova, Martina Cizmarikova, Viera Habalova, Dominika Jarcuskova

Abstract: The pathophysiology of affective disorders (AD), including depressive disorders (DD) and anxiety disorders (ANXD), is still unclear. To understand risk factors of the disorders, we evaluated genetic variations of the serotonin reuptake transporter (5-HTTLPR, ins/del) and the brain-derived neurotrophic factor (BDNF, rs6265) in Slovak patients suffering from AD. After genotyping we observed a significantly increased frequency of LS and LL genotypes (5-HTTLPR) in individuals diagnosed with AD compared to controls (OR = 1.99, 95% CI = 1.21–3.27, p = 0.006). There was also a significant relationship between TT (BDNF) genotype and the risk of AD in males (OR = 5.93, 95% CI = 1.42–27.07, p = 0.011). In gene-gene analysis, the LL or LS (5-HTTLPR) and CT or TT (BDNF) genotype combinations had a risk-enhancing effect on AD susceptibility (mainly ANXD in males), while SS (5-HTTLPR) and TT (BDNF) combination had a protective effect on AD risk (mainly ANXD). However, larger prospective studies are needed to confirm our findings.


Keywords: 5-HTTLPR — BDNF — Affective disorder — Depressive disorder — Anxiety disorder
Published online: 27-Sep-2021
Year: 2021, Volume: 40, Issue: 5 Page From: 365, Page To: 376
doi:10.4149/gpb_2021025


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