Association of Spermidine Plasma Levels with Brain Aging in a Population-based Study

Overview

Journal Alzheimers Dement

Specialties Neurology
Psychiatry

Date 2022 Nov 2

PMID 36321615

Authors

Silke M Wortha

Stefan Frenzel

Martin Bahls

Mohamad Habes

Katharina Wittfeld

Sandra Van der Auwera

Robin Bulow

Stephanie Zylla

Nele Friedrich

Matthias Nauck

Henry Volzke

Hans J Grabe

Claudia Schwarz

Agnes Floel

Affiliations

Soon will be listed here.

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.

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