Abstract
Prior observational studies have suggested that medications targeting the renin–angiotensin system, such as angiotensin-converting enzyme inhibitors (ACE-Is) and angiotensin receptor blockers (ARBs), may be associated with decreased PTSD symptoms. Given known sex differences in PTSD prevalence and cardiovascular disease, here we tested whether the effects of ACE-I/ARB status on PTSD differ by sex. We also expanded these observations with replication analyses in a large biorepository database. Participants in the initial sample included 840 trauma-exposed individuals recruited as part of the Grady Trauma Project. The Modified PTSD Symptom Scale (M-PSS) was administered and ACE-I/ARB status was determined by self-report. Replication analyses were conducted using a large biorepository database (Partners Healthcare Biobank, N = 116,389) with diagnoses and medication status based on available electronic health records. Among individuals treated with ACE-Is/ARBs in the initial sample, women had significantly higher M-PSS total and Re-experiencing severity compared to men (p’s < 0.05). Analyses with the large biorepository sample robustly replicated the overall effects of ACE-I/ARB medication associated with lower rate of PTSD diagnosis (p < 0.001). We also demonstrated that this effect may be specific to the renin–angiotensin system as it did not replicate for beta-blockers, calcium channel blockers, or diuretics. When we examined more specific drug classes, results indicated that the ACE-I/ARB effect on PTSD may be driven more by ARBs (e.g., Losartan) than by ACE-Is. Post-hoc analyses indicated that racial differences may exist in these effects. Overall, our results replicate and extend prior observations that the renin–angiotensin system is associated with PTSD. Medications targeting this system may be worthy of further investigation for PTSD treatment. Our findings suggest that sex and race effects should be considered in future treatment research.
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AVS analyzed the data and wrote the manuscript. LAD analyzed the data and contributed to writing the manuscript. JBM, PJM, and MBS contributed to writing the manuscript. VM, CFG, and KJR conceived and executed the parent project, and contributed to editing the manuscript. All authors reviewed and edited the final manuscript.
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Seligowski, A.V., Duffy, L.A., Merker, J.B. et al. The renin–angiotensin system in PTSD: a replication and extension. Neuropsychopharmacol. 46, 750–755 (2021). https://doi.org/10.1038/s41386-020-00923-1
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DOI: https://doi.org/10.1038/s41386-020-00923-1
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