Skip to main navigation Skip to search Skip to main content

Markers of Vitamin B12 Status in Relation to Cerebrospinal Fluid Biomarkers of Alzheimer's Disease and Cognitive Performance

  • Babak Hooshmand
  • , Franziska Appold
  • , Patrick Fissler
  • , Robert Perneczky
  • , Markus Otto
  • , Hayrettin Tumani
  • , Miia Kivipelto
  • , Christine A F von Arnim
    • Karolinska Institute and Karolinska University Hospital
    • University Hospital of Ulm
    • University Hospital Munich (LMU)
    • University Hospital Halle (Saale)
    • Vanderbilt University Medical Center

    Research output: Contribution to journal › Original Article › peer-review

    Abstract

    BACKGROUND: The association between markers of vitamin B12 status and cerebrospinal fluid (CSF) biomarkers of Alzheimer's disease (AD), which precede cognitive impairment, has been investigated by only a few small studies and results have been inconsistent.

    AIM: The aim of this study was to investigate the associations of vitamin B12-related markers with CSF biomarkers of AD and cognitive performance.

    METHODS: Data included 462 patients aged 40 to 94 years referred to the Memory Clinic of the Ulm University Hospital, Ulm, Germany. Vitamin B12, holotranscobalamin (HoloTC), homocysteine (tHcy), and methylmalonic acid (MMA) have been measured. CSF values of amyloid β42 (Aβ42 ) and total-tau have been assessed in 227 participants. CERAD battery was administered to examine the cognitive status, and different domains were derived. Regression models were used to investigate the associations.

    RESULTS: In the multi-adjusted model, higher levels of MMA were associated with raised CSF total-tau values: the odds ratios (ORs) 95% confidence intervals (CIs) were 3.25 (95% CI = 1.35-7.76) for the highest quartile of MMA compared to the lowest. Furthermore, moderately increased MMA were related to lower Aβ42 levels: the ORs and 95% CIs were 3.06 (95% CI = 1.22-7.67) for the third quartile of MMA compared to the lowest. All B12 indicators except B12 itself were related to several cognitive domains, such as episodic memory and executive functioning.

    CONCLUSIONS: Markers of vitamin B12 may be independent predictors of CSF biomarkers of AD and cognitive functioning, with MMA showing the most consistent effects. Randomized controlled trials are needed to determine the importance of vitamin B12 supplementation on slowing structural brain changes and cognitive decline. ANN NEUROL 2023;94:223-231.

    Original languageEnglish
    Pages (from-to)223-231
    Number of pages9
    JournalANNALS OF NEUROLOGY
    Volume94
    Issue number2
    DOIs
    Publication statusPublished - Aug 2023

    Keywords

    • Humans
    • Vitamin B 12
    • Alzheimer Disease/diagnosis
    • Amyloid beta-Peptides
    • Vitamin B 12 Deficiency/complications
    • Biomarkers
    • Cognition
    • Cognitive Dysfunction/diagnosis
    • Methylmalonic Acid

    Fingerprint

    Dive into the research topics of 'Markers of Vitamin B12 Status in Relation to Cerebrospinal Fluid Biomarkers of Alzheimer's Disease and Cognitive Performance'. Together they form a unique fingerprint.

    Cite this