Association of spermidine plasma levels with brain aging in a population-based study

Silke M. Wortha, Stefan Frenzel, Martin Bahls, Mohamad Habes, Katharina Wittfeld, Sandra Van der Auwera, Robin Bülow, Stephanie Zylla, Nele Friedrich, Matthias Nauck, Henry Völzke, Hans J. Grabe, Claudia Schwarz, Agnes Flöel

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Introduction: Supplementation with spermidine may support healthy aging, but elevated spermidine tissue levels were shown to be an indicator of Alzheimer's disease (AD). Methods: Data from 659 participants (age range: 21–81 years) of the population-based Study of Health in Pomerania TREND were included. We investigated the association between spermidine plasma levels and markers of brain aging (hippocampal volume, AD score, global cortical thickness [CT], and white matter hyperintensities [WMH]). Results: Higher spermidine levels were significantly associated with lower hippocampal volume (ß = −0.076; 95% confidence interval [CI]: −0.13 to −0.02; q = 0.026), higher AD score (ß = 0.118; 95% CI: 0.05 to 0.19; q = 0.006), lower global CT (ß = −0.104; 95% CI: −0.17 to −0.04; q = 0.014), but not WMH volume. Sensitivity analysis revealed no substantial changes after excluding participants with cancer, depression, or hemolysis. Discussion: Elevated spermidine plasma levels are associated with advanced brain aging and might serve as potential early biomarker for AD and vascular brain pathology.

Original languageEnglish (US)
Pages (from-to)1832-1840
Number of pages9
JournalAlzheimer's and Dementia
Volume19
Issue number5
DOIs
StatePublished - May 2023

Keywords

  • Alzheimer's disease
  • cortical thickness
  • epidemiology
  • hippocampal volume
  • spermidine
  • white matter hyperintensities

ASJC Scopus subject areas

  • Clinical Neurology
  • Geriatrics and Gerontology
  • Psychiatry and Mental health
  • Cellular and Molecular Neuroscience
  • Health Policy
  • Developmental Neuroscience
  • Epidemiology

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