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KMID : 0382320050250010013
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Environmental Mutagens and Carcinogens
2005 Volume.25 No. 1 p.13 ~ p.18
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Detection of 8-Hydroxy-2’ -Deoxyguanosine in Human Peripheral Blood Leukocytes and Stomach Tissues
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강호일/Kang HI
엄미옥/박미선/염태경/지승완/전해명/김옥희/Eom MO/Park MS/Ryeom TK/Jee SW/Jeon HM/Kim OH
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Abstract
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In the present study, we have measured 8-hydroxy-2’-deoxyguanosine in DNA of stomach cancers, adjacent stomach cancer tissues, normal stomach tissues and peripheral blood leukocytes of the same stomach cancer patients (n=48) to investigate their etiological association with gastric cancer and possibility whether peripheral blood leukocytes can use surrogate marker for early stomach cancer diagnosis by HPLC/ECD system. In normal stomach tissues, we found that 8-hydroxy-2’-deoxyguanosine levels in tissues infected with Helicobacter pylori were 1.4 fold higher than those in tissues without infected with Helicobacter pylori. However, in adjacent stomach cancer tissues, we found that 8-hydroxy-2’-deoxyguanosine levels in tissues infected with Helicobacter pylori were 1.5 fold lower than those in tissues without infected with Helicobacter pylori. In stomach cancer tissues, 8-hydroxy-2’-deoxyguanosine levels in tissues infected with Helicobacter pylori were not significantly different from those in tissues without infected with Helicobacter pylori. In Helicobacter pylori-negative specimens, 8-hydroxy-2’-deoxyguanosine levels of adjacent stomach cancer tissues were found to be significantly higher than those of normal stomach and cancer tissues. The 8-hydroxy-2’-deoxygnanosine levels of female were 1.7 fold higher than those of male in peripheral blood leukocytes of the same stomach cancer patients. The 8-hydroxy-2’-deoxyguanosine levels in Helicobacter pylori-negative specimens among adjacent stomach cancer tissues were found to be reversely correlated with those in peripheral blood leukocytes, suggesting that 8-hydroxy-2’-deoxyguanosine in peripheral blood leukocytes may not use as surrogate marker for the early diagnosis of human stomach cancer.
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KEYWORD
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