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자료유형
학술저널
저자정보
Gu, Young-Hwa (Department of Pharmacy, Pusan National University) Park, Mi-Sun (Department of Pharmacy, College of Pharmacy, Research Instituie of Oral Biotechnology, Pusan National University) Jhun, Byung-H. (Department of Pharmacy, College of Pharmacy, Research Instituie of Oral Biotechnology, Pusan National University)
저널정보
한국응용약물학회 The journal of applied pharmacology : the official journal of the Korean Society of Applied Pharmacology The journal of applied pharmacology : the official journal of the Korean Society of Applied Pharmacology 제6권 제4호
발행연도
1998.1
수록면
345 - 350 (6page)

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The adverse effects of ethanol on cell proliferation have been described for a variety of tissues and cells. In the present study, we investigated whether chronic ethanol intoxication impairs the cell proliferation and DNA synthesis induced by oncogenic $H-ras^{V12}$ - and $v-K-ras^{V12}$-transformed cells. Ethanol treatment inhibited the cell proliferation and the DNA synthesis of control parental fibroblasts in a time- and dose-dependent manner. In contrast, ethanol did not suppress the proliferation of either oncogenic $H-ras^{V12}$ - or $v-K-ras^{V12}$ -transformed fibroblasts. Microinjection of oncogenic $H-Ras^{V12}$ protein induces DNA synthesis and ethanol treatment did not interfere with the DNA synthesis. The antiproliferative toxicity of ethanol was rescued by antioxidants, such as N-acetylcysteine and 4-methlpyrazole. These results indicate that the antiproliferative action site of ethanol toxicity lies upstream or is independent of Ras and ethanol exerts its toxicity through a free radical formation.

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