Serum lipid and plasma fatty acid profiles in PTSD patients and healthy individuals: Associations with symptoms, cognitive function, and inflammatory markers

Shintaro Ogawa, Hiroaki Hori, Madoka Niwa, Mariko Itoh, Mingming Lin, Fuyuko Yoshida, Keiko Ino, Hitomi Kawanishi, Megumi Narita, Wakako Nakano, Risa Imai, Mie Matsui, Toshiko Kamo, Hiroshi Kunugi, Kotaro Hattori, Yoshiharu Kim

Research output: Contribution to journalArticlepeer-review

Abstract

Increasing evidence suggests that posttraumatic stress disorder (PTSD), a serious mental health condition, is associated with physical health problems. Lipid-related molecules are crucial for central nervous system functions associated with PTSD symptoms; however, case-control studies exploring the relationship between PTSD and lipid-related molecules are scarce. We examined 68 civilian PTSD patients and 97 healthy controls, evaluating PTSD symptoms, childhood maltreatment history, suicidality, and cognitive functions. Cholesterol, triglycerides, and inflammation-related marker levels were analyzed in serum, while fatty acid levels were measured in plasma. Compared to controls, patients exhibited significantly lower high-density lipoprotein cholesterol and n-6 linoleic acid levels, alongside higher saturated palmitic acid levels and the triene-to-tetraene (T/T) ratio. PTSD symptoms, particularly hyperarousal, were significantly positively correlated with n-6 γ-linolenic, n-6 dihomo-γ-linolenic, and n-9 mead acid levels, and the T/T ratio. Cognitive functions were significantly positively correlated with n-3 docosahexaenoic acid and total n-3 fatty acid levels, and negatively correlated with saturated lauric, palmitic, and total saturated fatty acid levels. Suicidality was significantly positively correlated with dihomo-γ-linolenic acid, mead acid levels, and the T/T ratio, and negatively correlated with polyunsaturated fatty acid (PUFA) levels. Inflammation-related marker levels were significantly correlated with higher palmitic, n-9 oleic, and total n-9 fatty acid levels, and lower linoleic acid and PUFA levels. Latent profile analysis (LPA) revealed distinct subgroups associated with unique fatty acid profiles. These lipid-related alterations may improve the understanding of PTSD pathophysiology. Distinct fatty acid profiles identified by LPA may help subtype PTSD patients and guide nutrition-based personalized treatment strategies.

Original languageEnglish
Article number111298
JournalProgress in Neuro-Psychopharmacology and Biological Psychiatry
Volume138
DOIs
StatePublished - 2 Apr 2025

Keywords

  • Cognitive function
  • Fatty acids
  • Inflammation
  • Latent profile analysis
  • Lipid-related molecules
  • PTSD
  • Precision treatment

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