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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.20, no.2, 2002³â, pp.173-179
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N-nitrosoethylurea°¡ Áã °£¼¼Æ÷ÀÇ Ç×»êÈÈ¿¼ÒÀÇ È°¼º¿¡ ¹ÌÄ¡´Â ¿µÇâ
( Effects of N-nitrosoethylurea on the Activities of Antioxidant Enzymes from Rat Liver Cell ) |
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| N-nitrosoethylurea(NEU)¿¡ ÀÇÇÑ ÁöÁú °ú»êȹ°ÀÇ ÇÔ·® º¯È¿Í ¾Ëµ¥È÷µå ´ë»çÈ¿¼Ò ¹× Ç×»êÈÈ¿¼ÒÀÇ È°¼ºº¯È¸¦ Áã °£¼¼Æ÷¿¡¼ ÃøÁ¤ÇÏ¿´´Ù. ¾Ëµ¥È÷µå ´ë»çÈ¿¼Ò·Î´Â alcohol dehydrogenase¿Í aldehyde dehydrogenase°¡ »ç¿ëµÇ¾ú°í Ç×»êÈÈ¿¼Ò·Î´Â glutathione transferase, superoxide dismutase, glutathione reductase¿Í catalase°¡ »ç¿ëµÇ¾ú´Ù. Áã °£¼¼Æ÷¿¡ ´Ù¾çÇÑ ³óµµÀÇ NEU¸¦ ó¸®ÇÑ ÈÄ ÁöÁú °ú»êȹ°ÀÇ ÇÔ·®º¯È¸¦ ÃøÁ¤ÇÏ¿´´Ù. ±× °á°ú 6.25mM NEU¿¡ ÀÇÇÏ¿© ÁöÁú °ú»êȹ°ÀÇ ÇÔ·®ÀÌ ÃÖ´ë 2.5¹è Áõ°¡ÇÏ¿´´Ù. Alcohol dehydrogenaseÀÇ È°¼ºÀº NEU󸮿¡ ÀÇÇÏ¿© ´ëÁ¶±ºº¸´Ù ÃÖ´ë 2.3¹è Áõ°¡ÇÏ¿´°í aldehyde dehydrogenaseÀÇ È°¼ºÀº ¾à 2¹è Áõ°¡ÇÏ¿´´Ù. Àü¾Ï¼º º´º¯ÀÇ ÁöÇ¥·Î ÀÌ¿ëµÇ´Â glutathione transferase¿Í catalaseÀÇ °æ¿ì NEU󸮿¡ ÀÇÇÑ È°¼ºÁõ°¡°¡ ¹Ì¹ÌÇÏ¿´´Ù. ±×·¯³ª superoxide dismutaseÀÇ È°¼ºÀº ÃÖ´ë 1.5¹è Áõ°¡ÇÏ¿´°í, glutathione reductaseÀÇ È°¼ºÀº ¾à 3¹è Áõ°¡ÇÏ¿´´Ù. ±×·¯¹Ç·Î superoxide dismutase¿Í g1utathione reductaseÀÇ È°¼ºÁõ°¡°¡ NEUÀÇ µ¶¼º¿¡ ´ëÇÑ ¼¼Æ÷³» Ç×»êÈ ¹æ¾î°úÁ¤¿¡¼ Áß¿äÇÑ ¿ªÇÒÀ» ÇÒ °ÍÀ¸·Î ÃßÃøµÈ´Ù |
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| N-nitrosoethylurea (NEU) -induced changes of lipid peroxide content, aldehyde metabolic enzyme activities and antioxidant enzyme activities were examined in cultured rat liver cell. Aldehyde metabolic enzymes tested in this investigation were alcohol dehydrogenase and aldehyde dehydrogenase. Several antioxidant enzymes tested were glutathione transferase, superoxide dismutase, glutathione reductase and catalase. When the cell was exposed with various concentrations of NEU, lipid peroxide content increased about 2.5 fold with 6.25 mM NEU. Maximun 2.3 times higher alcohol dehydrogenase activity was found after NEU treatment. About 2 times higher aldehyde dehydrogenase activity could also be observed. Only slight increases of glutathione transferase and catalase activities occurred with NEU treatment. In addition mnximun 1.5 times higher superoxide dismutase activities and 3 times higher glutathione reductase activities were found after NEU treatment. Therefore, it is likely that the increases of superoxide dismutase and glutathione reductase could contribute in a antioxidative process against NEU toxicity. |
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| N-nitrosoethylurea;rat liver cell;antioxidant enzymes; |
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ȯ°æ»ý¹° / v.20, no.2, 2002³â, pp.173-179
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921492666)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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