Association Between the C4 Binding Protein Level and White Matter Integrity in Major Depressive Disorder

Jihoon Park, Youbin Kang, Kyu Man Han, Woo Suk Tae, Un Beom Kang, Hyosub Chu, Byung Joo Ham

Research output: Contribution to journalArticlepeer-review

Abstract

Objective Considerable evidence suggests that neuroinflammation plays an important role in the pathophysiology of major depressive disorder (MDD). However, the relationship between serum C4 binding protein (C4BP) and white matter (WM) tract integrity in MDD has not been investigated. Methods We obtained diffusion tensor images of 44 patients with MDD and 44 healthy controls and performed TRActs Constrained by UnderLying Anatomy (TRACULA) analysis to assess WM tract integrity. Serum C4-binding protein alpha chain (C4BPA) and C4-binding protein beta chain (C4BPB) levels were measured and in-between group comparisons were obtained. The correlation between serum C4BP levels and WM tract integrity was examined. Results In comparison to healthy controls, both serum C4BPA and C4BPB were higher in MDD. Also, fractional anisotropy (FA) was increased in the left cingulum-angular bundle (CAB) in MDD, but not healthy controls (HCs). A significant correlation was found between serum C4BP and FA levels in the right cingulum-cingulate gyrus bundle (CCG) in MDD. Conclusion This study is the first to investigate the correlation between serum C4BP levels and WM tract integrity in MDD. We identified an increase in WM integrity in the left CAB region in MDD. Furthermore, serum C4BP levels were higher in MDD, and this find-ing correlated with increased WM integrity in the right CCG region.

Original languageEnglish
Pages (from-to)703-711
Number of pages9
JournalPsychiatry Investigation
Volume19
Issue number9
DOIs
Publication statusPublished - 2022 Sep

Keywords

  • C4 binding protein
  • Complement
  • Major depressive disorder
  • Neuroinflammation
  • White matter tract integrity

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Biological Psychiatry

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