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Journal of Experimental & Clinical Cancer Research
Published in: Journal of Experimental & Clinical Cancer Research 1/2010

Open Access 01-12-2010 | Research

8-oxo-7,8-dihydro-2'-deoxyguanosine as a biomarker of oxidative damage in oesophageal cancer patients: lack of association with antioxidant vitamins and polymorphism of hOGG1 and GST

Authors: Stéphanie Lagadu, Mathilde Lechevrel, François Sichel, Jean Breton, Didier Pottier, Rémy Couderc, Fathi Moussa, Virginie Prevost

Published in: Journal of Experimental & Clinical Cancer Research | Issue 1/2010

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Abstract

Background

The present report was designed to investigate the origins of elevated oxidative stress measured in cancer patients in our previous work related to a case-control study (17 cases, 43 controls) on oesophageal cancers. The aim was to characterize the relationship between the levels of 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG), antioxidant vitamins and genetic susceptibility.

Methods

8-oxodG was analysed in peripheral blood mononuclear cells (PBMCs) by High Performance Liquid Chromatography with Electrochemical Detection (HPLC-ED). Analysis of gene polymorphisms in GSTM1 and GSTT1 was performed by multiplex PCR and in GSTP1 and hOGG1 by a PCR-RFLP method. Reversed-phase HPLC with UV detection at 294 nm was used to measure vitamins A and E in serum from the same blood samples.

Results

We observed that in our combined population (cases and control, n = 60), there was no statistically significant correlation between the levels of 8-oxodG and (i) the serum concentration of antioxidant vitamins, vitamin A (P = 0.290) or vitamin E (P = 0.813), or (ii) the incidence of the Ser 326Cys polymorphic variant (P = 0.637) of the hOGG1 gene. Also, the levels of 8-oxodG were not significantly associated with polymorphisms in metabolite-detoxifying genes, such as GST s, except for the positive correlation with Val/Val GST P1 allele (P < 0.0001).

Conclusions

The weakness of our cohort size notwithstanding, vitamins levels in serum and genetic polymorphisms in the hOGG1 or GST genes do not appear to be important modulators of 8-oxodG levels.
Appendix
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Metadata
Title
8-oxo-7,8-dihydro-2'-deoxyguanosine as a biomarker of oxidative damage in oesophageal cancer patients: lack of association with antioxidant vitamins and polymorphism of hOGG1 and GST
Authors
Stéphanie Lagadu
Mathilde Lechevrel
François Sichel
Jean Breton
Didier Pottier
Rémy Couderc
Fathi Moussa
Virginie Prevost
Publication date
01-12-2010
Publisher
BioMed Central
Published in
Journal of Experimental & Clinical Cancer Research / Issue 1/2010
Electronic ISSN: 1756-9966
DOI
https://doi.org/10.1186/1756-9966-29-157

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