The pituitary adenylate cyclase-activating polypeptide system as a sex-specific modulator of hippocampal response to threat stimuli

Daniel Porta-Casteràs, Marta Cano*, Trevor Steward, Raül Andero, Narcís Cardoner

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Abstract

Background: Pituitary adenylate cyclase-activating polypeptide (PACAP) receptor gene polymorphism has been postulated as a potential sex-specific diagnostic biomarker of trauma-related disorders. However, no research to date has evaluated whether the PACAPergic system may act as a vulnerability/resilience neuromechanism to trauma-induced psychopathology in healthy participants without heightened risk to experience traumatic events. Methods: Here, we compared the amygdala and hippocampus response to fearful faces in participants with at-risk genotype versus non-risk participants from the Human Connectome Project (n = 991; 53.4% female). Results: Increased hippocampal response to fearful faces in the female risk group emerged in sex by genetic risk interaction. Conclusions: Our findings revealed the first sex-specific neurogenetic vulnerability factor to trauma-related disorders, and emphasize the importance of prevention-based strategies to ameliorate neuropsychiatric pathophysiology.

Original languageEnglish
Article number100448
Pages (from-to)1-7
Number of pages7
JournalNeurobiology of Stress
Volume18
DOIs
Publication statusPublished - 1 May 2022

Keywords

  • fMRI
  • Hippocampus
  • PACAP
  • PTSD
  • Threat
  • Women

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