NeuroMolecular Medicine

, Volume 13, Issue 1, pp 37–43 | Cite as

Increased Cerebrospinal Fluid F2-Isoprostanes are Associated with Aging and Latent Alzheimer’s Disease as Identified by Biomarkers

  • Thomas J. Montine
  • Elaine R. Peskind
  • Joseph F. Quinn
  • Angela M. Wilson
  • Kathleen S. Montine
  • Douglas Galasko
Original Paper


Alzheimer’s disease (AD) is a common age-related chronic illness with latent, prodrome, and fully symptomatic dementia stages. Increased free radical injury to regions of brain is one feature of prodrome and dementia stages of AD; however, it also is associated with advancing age. This raises the possibility that age-related free radical injury to brain might be caused in part or in full by latent AD. We quantified free radical injury in the central nervous system with cerebrospinal fluid (CSF) F2-isoprostanes (IsoPs) in 421 clinically normal individuals and observed a significant increase over the adult human lifespan (P < 0.001). Using CSF amyloid (A) β42 and tau, we defined normality using results from 28 clinically normal individuals <50 years old, and then stratified 74 clinically normal subjects ≥60 years into those with CSF that had normal CSF Aβ42 and tau (n = 37); abnormal CSF Aβ42 and tau, the biomarker signature of AD (n = 24); decreased Aβ42 only (n = 4); or increased tau only (n = 9). Increased CSF F2-IsoPs were present in clinically normal subjects with the biomarker signature of AD (P < 0.05) and those subjects with increased CSF tau (P < 0.001). Finally, we analyzed the relationship between age and CSF F2-IsoPs for those clinically normal adults with normal CSF (n = 37) and those with abnormal CSF Aβ42 and/or tau (n = 37); only those with normal CSF demonstrated a significant increase with age (P < 0.01). These results show that CSF F2-IsoPs increased across the human lifespan and that this age-related increase in free radical injury to brain persisted after culling those with laboratory evidence of latent AD.


Alzheimer’s disease Cerebrospinal fluid Biomarkers 42 Tau F2-isoprostanes 



This work was supported by grants from the NIH (AG05131 and AG05136), the Fidelity Foundation, and the Nancy and Buster Alvord Endowment.


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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Thomas J. Montine
    • 1
  • Elaine R. Peskind
    • 2
    • 3
  • Joseph F. Quinn
    • 4
  • Angela M. Wilson
    • 1
  • Kathleen S. Montine
    • 1
  • Douglas Galasko
    • 5
  1. 1.Department of PathologyUniversity of WashingtonSeattleUSA
  2. 2.Department of Psychiatry and Behavioral SciencesUniversity of WashingtonSeattleUSA
  3. 3.Mental Illness Research, Education, and Clinical CenterVA Puget Sound Health Care SystemSeattleUSA
  4. 4.Department of NeurologyOregon Health and Science University and Portland VA Medical CenterPortlandUSA
  5. 5.Department of NeurosciencesUniversity of California at San DiegoLa JollaUSA

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