Lipid peroxidation in aging brain and Alzheimer's disease

Thomas J. Montine, M. Diana Neely, Joseph F. Quinn, M. Flint Beal, William R. Markesbery, L. Jackson Roberts, Jason D. Morrow

Research output: Contribution to journalArticlepeer-review

384 Scopus citations


Lipid peroxidation is one of the major outcomes of free radical-mediated injury that directly damages membranes and generates a number of secondary products, both from fission and endocyclization of oxygenated fatty acids that possess neurotoxic activity. Numerous studies have demonstrated increased lipid peroxidation in brain of patients with Alzheimer's disease (AD) compared with age-matched controls. These data include quantification of fission and endocyclized products such as 4-hydroxy-2-nonenal, acrolein, isoprostanes, and neuroprostanes. Immunohistochemical and biochemical studies have localized the majority of lipid peroxidation products to neurons. A few studies have consistently demonstrated increased cerebrospinal fluid (CSF) levels of isoprostanes in AD patients early in the course of their dementia, and one study has suggested that CSF isoprostanes may improve the laboratory diagnostic accuracy for AD. Similar analyses of control individuals over a wide range of ages indicate that brain lipid peroxidation is not a significant feature of usual aging. Quantification of isoprostanes in plasma and urine of AD patients has yielded inconsistent results. These results indicate that brain lipid peroxidation is a potential therapeutic target in probable AD patients, and that CSF isoprostanes may aid in the assessment of antioxidant experimental therapeutics and the laboratory diagnosis of AD.

Original languageEnglish (US)
Pages (from-to)620-626
Number of pages7
JournalFree Radical Biology and Medicine
Issue number5
StatePublished - Sep 1 2002
Externally publishedYes


  • Aging
  • Alzheimer's disease
  • Brain
  • Free radicals
  • Isoprostanes
  • Lipid peroxidation
  • Neuroprostanes

ASJC Scopus subject areas

  • Biochemistry
  • Physiology (medical)


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