Memory Impairment is Associated with Serum Methylarginines in Older Adults

Mark McEvoy, Peter Schofield, Wayne Smith, Kingsley Agho, Arduino A. Mangoni, Roy L. Soiza, Roseanne Peel, John Attia

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8 Citations (Scopus)

Abstract

BACKGROUND: This study measured serum concentrations of vascular risk factors, asymmetric dimethylarginine (ADMA) and symmetric dimethylarginine (SDMA) in a representative sample of older community-dwelling adults and determined their associations with objective and subjective memory impairment.

METHODS: Data on clinical, lifestyle, and demographic characteristics, serum ADMA, SDMA, and L-arginine (measured using LC-MS/MS) were collected from a population-based sample of older Australian adults from the Hunter Community Study. Objective memory was measured with the Audio Recorded Cognitive Screen (ARCS) neuropsychological battery and subjective memory impairment was measured using the Memory Complaint Questionnaire (MAC-Q).

RESULTS: Multivariate analysis revealed that SDMA and diabetes were significantly associated with objective memory impairment (Adjusted Odd ratio (AOR) = 3.90; 95% CI. 1.21 - 12.52 for fourth quartile (Q4) of SDMA. ADMA, SDMA, education, number of general practitioner visits and atrial fibrillation were all significantly associated with subjective memory impairment. (AOR = 1.82; 95% CI. 1.04 - 3.18 for Q4 ADMA.

CONCLUSIONS: Higher serum SDMA was associated with objective and subjective memory impairment while higher serum ADMA was associated with subjective memory impairment.

Original languageEnglish
Pages (from-to)97-106
Number of pages10
JournalCurrent Alzheimer Research
Volume11
Issue number1
DOIs
Publication statusPublished - Jan 2014

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Keywords

  • ADMA
  • Alzheimer’s disease
  • memory impairment
  • methylarginines
  • nitric oxide
  • older adults
  • SDMA

Cite this

McEvoy, M., Schofield, P., Smith, W., Agho, K., Mangoni, A. A., Soiza, R. L., Peel, R., & Attia, J. (2014). Memory Impairment is Associated with Serum Methylarginines in Older Adults. Current Alzheimer Research, 11(1), 97-106. https://doi.org/10.2174/15672050113106660178