| Plasma and urinary HPLC-ED determination of the ratio of 8-OHdG/2-dG in Parkinson's disease. | |
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MedLine Citation:
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PMID: 22239015 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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BACKGROUND: Oxidative stress may be directly or indirectly involved in the pathogenesis of Parkinson's disease (PD). 8-hydroxy-2'deoxyguanosine (8-OHdG) is the major product of DNA oxidative damage but its determination in plasma or urine may have controversial significance. The concentration of 8-OHdG not only depends on its oxidation rate but also on the efficacy of the DNA repairing systems. METHODS: We studied the ratio between 8-OHdG and 2-dG (the corresponding not hydroxylated base 2'-deoxyguanosine) in plasma and urine as a marker of oxydative stress in PD. This enabled the determination of the real DNA damage in terms of oxidation rate regardless of the efficacy of the DNA repairing mechanisms. RESULTS: We optimized two different analytical methods: one for 8-OHdG and the other for 2-dG, both based on a common preliminary solid-phase extraction step (SPE) followed by two different HPLC analytical separations with electrochemical detection (HPLC-ED). The reliability of these methods was confirmed by analysing plasma and urine samples collected in parkinsonian patients and in age-matched healthy control subjects. CONCLUSIONS: In urine samples, the measurement of 8-OHdG alone as well as the ratio 8-OHdG/2-dG were significantly different in healthy controls and PD patients. In plasma samples, only the ratio 8-OHdG/2-dG was significantly higher in PD compared to healthy controls showing that the ratio 8-OHdG/2-dG is a reliable diagnostic tool in studies on DNA oxydative damage. |
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Authors:
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A Bolner; M Pilleri; V De Riva; G P Nordera |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Clinical laboratory Volume: 57 ISSN: 1433-6510 ISO Abbreviation: Clin. Lab. Publication Date: 2011 |
Date Detail:
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Created Date: 2012-01-13 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9705611 Medline TA: Clin Lab Country: Germany |
Other Details:
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Languages: eng Pagination: 859-66 Citation Subset: IM |
Affiliation:
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Department of Neurology, Casa di Cura Villa Margherita, Arcugnano, Vicenza, Italy. bolner.andrea@gmail.com |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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