PTSD and epigenetic aging: a longitudinal meta-analysis
- PMID: 40366073
- PMCID: PMC12094664
- DOI: 10.1017/S0033291725000558
PTSD and epigenetic aging: a longitudinal meta-analysis
Abstract
Background: Posttraumatic stress disorder (PTSD) has been associated with advanced epigenetic age cross-sectionally, but the association between these variables over time is unclear. This study conducted meta-analyses to test whether new-onset PTSD diagnosis and changes in PTSD symptom severity over time were associated with changes in two metrics of epigenetic aging over two time points.
Methods: We conducted meta-analyses of the association between change in PTSD diagnosis and symptom severity and change in epigenetic age acceleration/deceleration (age-adjusted DNA methylation age residuals as per the Horvath and GrimAge metrics) using data from 7 military and civilian cohorts participating in the Psychiatric Genomics Consortium PTSD Epigenetics Workgroup (total N = 1,367).
Results: Meta-analysis revealed that the interaction between Time 1 (T1) Horvath age residuals and new-onset PTSD over time was significantly associated with Horvath age residuals at T2 (meta β = 0.16, meta p = 0.02, p-adj = 0.03). The interaction between T1 Horvath age residuals and changes in PTSD symptom severity over time was significantly related to Horvath age residuals at T2 (meta β = 0.24, meta p = 0.05). No associations were observed for GrimAge residuals.
Conclusions: Results indicated that individuals who developed new-onset PTSD or showed increased PTSD symptom severity over time evidenced greater epigenetic age acceleration at follow-up than would be expected based on baseline age acceleration. This suggests that PTSD may accelerate biological aging over time and highlights the need for intervention studies to determine if PTSD treatment has a beneficial effect on the aging methylome.
Keywords: DNA methylation; PTSD; accelerated aging; longitudinal; meta-analysis.
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References
-
- Alisch, R. S., Chopra, P., Fox, A. S., Chen, K., White, A. T. J., Roseboom, P. H., … Kalin, N. H. (2014). Differentially methylated plasticity genes in the amygdala of young primates are linked to anxious temperament, an at risk phenotype for anxiety and depressive disorders. Journal of Neuroscience, 34(47), 15548–15556. 10.1523/JNEUROSCI.3338-14.2014 - DOI - PMC - PubMed
-
- Alisch, R. S., Van Hulle, C., Chopra, P., Bhattacharyya, A., Zhang, S. C., Davidson, R. J., … Goldsmith, H. H. (2017). A multi-dimensional characterization of anxiety in monozygotic twin pairs reveals susceptibility loci in humans. Translational Psychiatry, 7(12), 1282. 10.1038/s41398-017-0047-9 - DOI - PMC - PubMed
-
- Baker, D. G., Nash, W. P., Litz, B. T., Geyer, M. A., Risbrough, V. B., Nievergelt, C. M., … Webb-Murphy, J. A. (2012). Predictors of risk and resilience for posttraumatic stress disorder among ground combat marines: Methods of the marine resiliency study. Preventing Chronic Disease, 9(5), E97. 10.5888/pcd9.110134 - DOI - PMC - PubMed