Cited by 126Suicide and Self-Harm StudiesStress Responses and CortisolTryptophan and brain disorders

The DOI matches its Crossref record; 74 of the 75 references it cites were found in a registry or an index.

Blunted HPA axis activity prior to suicide attempt and increased inflammation in attempters

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Abstract

Background Hypothalamic-Pituitary-Adrenal (HPA) axis dysregulation is associated with increased risk for suicidal behavior. However, it is not clear whether such dysregulation exists prior to or is a consequence of attempt. Studies also show an activation of inflammatory responses in suicidal behavior but often combine attempters with those with ideation. Methods The sample consisted of psychiatric inpatients, aged 15-30 years, admitted for suicide attempt (SA, n=38), inpatients admitted for suicidal ideation with no prior history of attempts (SI, n=40), and healthy controls (n=37). We compared SA, SI, and controls on hair cortisol concentrations (HCC), which provides retrospective levels of cortisol and thus prior to the attempt in SA. We also compared them on the expression of genes in the HPA axis and inflammatory pathways previously implicated in suicidal behavior (GR or NR3C1, SKA2, FKBP5, IL-1β, TNF-α); plasma C-Reactive Protein (CRP); and cellular measures of glucocorticoid receptor (GR) sensitivity and stimulated production of IL-6. Results We found lower HCC [β=-0.55, 95% CI (-0.96, -0.13), p=0.01, ES=-0.54] in first-time SA compared to SI and controls. In addition, SA showed lower GR or NR3C1 (α isoform) mRNA [β=-5.11, 95% CI (-10.9, 0.73), p=0.09, ES=-0.46], higher CRP [β=0.94, 95% CI (-0.004, 1.9), p=0.05, ES=0.60], and higher TNF-α mRNA [β=26.4, 95% CI (7.7, 45.2), p=0.006, ES=0.73]. Conclusions This is the first study to differentiate youth who attempt suicide from those with suicidal ideation on HCC and to show that low HCC precedes suicide attempt. Suicide attempters also showed a distinct biological profile on several markers in both the HPA axis and inflammatory pathways. Future longitudinal studies are needed to examine the ability of these biomarkers to predict suicidal behavior.

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Authors
Melhem, N. M., Munroe, S., Marsland, A., Gray, K., Brent, D., Porta, G., Douaihy, A., Laudenslager, M. L., DePietro, F., Diler, R., Driscoll, H., & Gopalan, P.
Affiliations
  • University of Pittsburgh (US)
  • University of Pittsburgh Medical Center (US)
  • University of Colorado Anschutz (US)
Corresponding author
Melhem, Nadine M.
Venue
Psychoneuroendocrinology
Publisher
Elsevier BV
Published
2017-03
Volume
77
Pages
284-294
ISSN
0306-4530 (ISSN-L)
OpenAlex
W2570996757
Cited by
124
References
75
Citations by year
2026: 8 · 2025: 12 · 2024: 11 · 2023: 18 · 2022: 16 · 2021: 15 · 2020: 16 · 2019: 14 · 2018: 10 · 2017: 4
FWCI
14.08
Type
journal article
Language
en
Open access
Locations
  • Psychoneuroendocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Mental Health (R21MH101208)
Topics
  • Social Sciences › Psychology › Clinical Psychology › Suicide and Self-Harm Studies
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
Keywords
suicide attempts, suicidal ideation, HPA axis dysregulation, hair cortisol, glucocorticoid receptor, inflammation, C-reactive protein, TNF-α, interleukin-6, FKBP5, SKA2, youth
MeSH terms
Adolescent, Adult, C-Reactive Protein, Female, Hair, Humans, Hydrocortisone, Hypothalamo-Hypophyseal System, Inflammation, Inpatients, Male, Pituitary-Adrenal System, Retrospective Studies, Suicide, Attempted, Biomarkers, Interleukin-6, Young Adult, Suicidal Ideation

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