Cited by 86Posttraumatic Stress Disorder ResearchStress Responses and CortisolMigration, Health and Trauma

Suppressed monocyte gene expression profile in men versus women with PTSD

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Neylan, Thomas C., Sun, Bing, Rempel, Hans, Ross, Jessica, Lenoci, Maryann, O’Donovan, Aoife, Pulliam, Lynn·2011·Brain, Behavior, and Immunity

Abstract

There have been several attempts to use gene microarrays from peripheral blood mononuclear cells to identify new biological pathways or targets for therapy in Posttraumatic Stress Disorder (PTSD). The few studies conducted to date have yielded an unclear pattern of findings, perhaps reflecting the use of heterogeneous samples of circulating immune cells for analysis. We used gene microarrays on a homogeneous sample of circulating monocytes to test the hypothesis that chronic PTSD would be associated with elevated inflammatory activity and to identify new pathways dysregulated in the disorder. Forty-nine men (24 PTSD+ and 25 age-matched trauma-exposed PTSD- controls) and 18 women (10 PTSD+ and 8 age-matched PTSD- controls) were recruited. Gene expression microarray analysis was performed on CD14+ monocytes, immune cells that initiate and respond to inflammatory signaling. Male subjects with PTSD had an overall pattern of under-expression of genes on monocytes (47 under-expressed versus 4 over-expressed genes). A rigorous correction for multiple comparisons and verification with qPCR showed that of only 3 genes that were differentially expressed, all were under-expressed. There was no transcriptional evidence of chronic inflammation in male PTSD+ subjects. In contrast, preliminary data from our pilot female PTSD+ subjects showed a relatively balanced pattern of increased and decreased expression of genes and an increase in activity of pathways related to immune activation. The results indicate differential patterns of monocyte gene expression in PTSD, and the preliminary data from our female pilot subjects are suggestive of gender dimorphism in biologic pathways activated in PTSD. Changes in immune cell gene expression may contribute to medical morbidity in PTSD.

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  • Transcripts of genes encoding enzymes involved in metabolism of reactive oxygen species such as GSTM1 and GSTM2 are altered in chronic PTSD and have been associated with risk for PTSD development in a prospective manner.

    “In addition, transcripts of genes encoding enzymes involved in metabolism of reactive oxygen species (ROS) such as GSTM1 and GSTM2 (glutathione S-transferase mu 1 and 2) are altered in chronic PTSD (Neylan et al, 2011) and have been associated with risk for PTSD development in a prospective manner (Glatt et al, 2013;Tylee et al, 2015).”

    From Inflammation in Fear- and Anxiety-Based Disorders: PTSD, GAD, and Beyond (2017) · cites this paper as Neylan et al, 2011

    The Results (Male Sample; no page listed) report altered monocyte gene expression in chronic PTSD, supporting the general finding. They identify SDPR, PF4 and HIST1H2AC as the three validated genes; searches for GSTM1, GSTM2 and glutathione found no passage supporting the specific examples. The prospective-risk claim is attributed to different citations, not Neylan et al. (LLM, conf=0.84)

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Authors
Neylan, T. C., Sun, B., Rempel, H., Ross, J., Lenoci, M., O’Donovan, A., & Pulliam, L.
Affiliations
San Francisco VA Medical Center (US)
Corresponding author
Neylan, Thomas C.
Venue
Brain, Behavior, and Immunity
Publisher
Elsevier BV
Published
2011-03
Volume
25
Issue
3
Pages
524-531
ISSN
0889-1591 (ISSN-L)
OpenAlex
W2075442427
Cited by
86
References
50
Citations by year
2026: 2 · 2025: 1 · 2024: 2 · 2023: 5 · 2022: 7 · 2021: 5 · 2020: 7 · 2019: 7 · 2018: 5 · 2017: 12 · 2016: 9 · 2015: 4 · 2014: 4 · 2013: 8 · 2012: 4
FWCI
5.61
Type
journal article
Language
en
Open access
Locations
  • Brain Behavior and Immunity (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • Department of Defense (W81XWH-05-2-0094)
  • Mental Illness Research and Education Clinical Center (MIRECC) of the US Veterans Health Administration
  • National Institute for Mental Health (R01 MH73978)
Topics
  • Social Sciences › Psychology › Clinical Psychology › Posttraumatic Stress Disorder Research
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Social Sciences › Psychology › Clinical Psychology › Migration, Health and Trauma
Keywords
post-traumatic stress disorder, monocyte gene expression, CD14+ monocytes, sex differences, chronic inflammation, immune activation, peripheral blood mononuclear cells, gender dimorphism
MeSH terms
Female, Humans, Male, Monocytes, Sex Characteristics, Stress Disorders, Post-Traumatic, Gene Expression Profiling, Microarray Analysis

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