期刊
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ELSEVIER SCIENCE BV
DOI: 10.1016/j.jchromb.2005.04.001
关键词
8-hydroxy-2 '-deoxyguanosine; cancer; capillary electrophoresis; GC/MS
8-Hydroxy-2'-deoxyguanosine (8OHdG) has been considered as an excellent marker of oxidative DNA damage associated with age-related diseases such as cancer. In this paper, two sensitive methods-capillary electrophoresis with electrochemical detection (CE-ECD) and gas chromatography/mass spectrometry (GC/MS) were developed for urinary 8OHdG analysis. The R.S.D. of the spiked recovery of the two 41111111 methods for determining urinary 8OHdG was 4.03% and 8.25%, respectively, and the results from the two methods have a good consistency ( r= 0.999, P < 0.01). The developed CE-ECD method was applied to investigate the urinary 8OHAG levels in different cancer patients and follow up the response of therapy. It was found that the excretion levels of urinary 8OHdG in cancer patients were significantly higher than those in healthy persons (35.26 +/- 27.96 nM versus 13.51 +/- 5.08 nM, P < 0.05), and cancer patients receiving surgical therapy and chemotherapy showed a significant decrease in urinary 8OHdG. (c) 2005 Elsevier B.V. All rights reserved.
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