Journal
FREE RADICAL RESEARCH
Volume 41, Issue 5, Pages 546-554Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10715760601164050
Keywords
oxidative stress marker; hypertension; DNA damage; 8-oxo-7; 8-dihydro-2 '-deoxyguanosine (8-oxo-dG); urine
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The potential use of oxidative stress products as disease markers and progression is an important aspect of biomedical research. In the present study, the quantification of urine 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxo-dG) concentration has been used to express the oxidation status of hypertensive subjects. 8-oxo-dG has been simultaneously isolated and assayed in nuclear (nDNA) and mitochondrial DNA (mtDNA). In addition, oxidative stress of mononuclear cells has been estimated by means of GSH and GSSG levels and GSSG/GSH ratio in hypertensive subjects before and after antihypertensive treatment. It is shown that oxidative stress decreases significantly in hypertensive patients after treatment the effect being accompanied by reduction of their blood pressure. A significant correlation is observed comparing the yield of urine 8-oxo-dG and that isolated from mitochondria DNA. Moreover, urinary excretion of 8-oxo-dG also correlates with the GSSG/GSH ratio of cells. Conclusion: urine 8-oxo-dG assay is a good marker for monitoring oxidative stress changes in hypertensives.
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