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Cited by 291

The DOI matches its Crossref record; 9 of the 9 references it cites were found in a registry or an index.

Increased DNA Oxidation and Decreased Levels of Repair Products in Alzheimer's Disease Ventricular CSF

Open access
Lovell, Mark A., Gabbita, S. Prasad, Markesbery, William R.·1999·Journal of Neurochemistry

Abstract

Abstract : One of the leading etiologic hypotheses regarding Alzheimer's disease (AD) is the involvement of free radical‐mediated oxidative stress in neuronal degeneration. Although several recent studies show an increase in levels of brain DNA oxidation in both aging and AD, there have been no studies of levels of markers of DNA oxidation in ventricular CSF. This is a study of levels of 8‐hydroxy‐2′‐deoxyguanosine (8‐OHdG), the predominant marker of oxidative DNA damage, in intact DNA and as the “free” repair product that results from repair mechanisms. Free 8‐OHdG was isolated from CSF from nine AD and five age‐matched control subjects using solidphase extraction columns and measured using gas chromatography/mass spectrometry with selective ion monitoring. Intact DNA was isolated from the same samples and the levels of 8‐OHdG determined in the intact structures. Quantification of results was carried out using stable isotope‐labeled 8‐OHdG. By using this sensitive methodology, statistically significant elevations (p < 0.05) of 8‐OHdG were observed in intact DNA in AD subjects compared with age‐matched control subjects. In contrast, levels of free 8‐OHdG, removed via repair mechanisms, were depleted significantly in AD samples (p < 0.05). Our results demonstrate an increase in unrepaired oxygen radical‐mediated damage in AD DNA as evidenced by the increased presence of 8‐OHdG in intact DNA and decreased concentrations of the free repair product. These data suggest that the brain in AD may be subject to the double insult of increased oxidative stress, as well as deficiencies in repair mechanisms responsible for removal of oxidized bases.

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Crossref · 10.1046/j.1471-4159.1999.0720771.x

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Metadata

Authors
Lovell, M. A., Gabbita, S. P., & Markesbery, W. R.
Venue
Journal of Neurochemistry
Publisher
Wiley
Published
1999-02
Volume
72
Issue
2
Pages
771-776
ISSN
  • 0022-3042 (ISSN-L)
  • 1471-4159
OpenAlex
W2056585943
Cited by
291
References
9
FWCI
6.05
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Increased DNA Oxidation and Decreased Levels of Repair Products in Alzheimer's Disease Ventricular CSF. https://app.cochat.ai/papers/10.1046/j.1471-4159.1999.0720771.x
The paper
Lovell, M. A., Gabbita, S. P., & Markesbery, W. R. (1999). Increased DNA Oxidation and Decreased Levels of Repair Products in Alzheimer's Disease Ventricular CSF. Journal of Neurochemistry. https://doi.org/10.1046/j.1471-4159.1999.0720771.x

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.