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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.36, no.1, 2003³â, pp.36-83
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°ú·®ÀÇ ¾Æ¿¬¿¡ ÀÇÇÑ ¾ÆÇÁ¸®Ä« ¹ßÅé°³±¸¸® (Xenopus Iaevis)ÀÇ ¹è¹ß»ý ÀÌ»ó°ú µ¶¼º
( Embryotoxicity and Teratogenicity of Excess Zinc on Xenopus Iaevis ) |
| À±Ãá½Ä;ÁøÁ¤È¿;Á¤¼±¿ì; â¿ø´ëÇб³;â¿ø´ëÇб³;â¿ø´ëÇб³;
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| °ø¾÷Àû ¸ñÀûÀ¸·Î »ç¿ëµÈ ÈÄÀÇ ¾Æ¿¬Àº À°Áö¿Í ¼ö°è·Î À¯ÀԵǸç, Åä¾çÀ¸·Î À¯ÀÔµÈ ÈÄÀÇ ¾Æ¿¬Àº ºÎ½ÄµÇ¾î ¼ö°è·Î À¯ÀԵȴÙ. °ú·®ÀÇ ¾Æ¿¬Àº, ¼ö¼»ý¹°¿¡ ´ëÇØ Á߱ݼÓÀ¸·Î¼ µ¶¼ºÀ» °¡Áö¸ç ¼ö¼ µ¿¡¤½Ä¹°ÀÇ ¼ºÀå¾ïÁ¦¸¦ À¯¹ßÇϰí, ³ª¾Æ°¡¼´Â µ¿¹°ÀÇ ±âÇü¹ß»ýÀ» ÃÊ·¡ÇÑ´Ù. º» ¿¬±¸¿¡¼´Â FETAX (grog embryo teratogenetic assay with Xenopus) ¹æ¹ý¿¡ ÀÇÇØ in vivo¿¡¼ °ú·® ¾Æ¿¬ÀÇ µ¶¼ºÀ» ¹àÇû´Ù. st. 9 ½Ã±â¿¡ ÀÖ´Â Xenopus °³±¸¸®ÀÇ ¹è¸¦ 100~900 ¥ìM $ZnCl_2$ ¿ë¾×¿¡ 7Àϰ£ ³ëÃâ ½ÃÄ×À» ¶§ 100 ¥ìM ¾Æ¿¬¿¡¼´Â 81%ÀÇ °³Ã¼°¡ »ýÁ¸ÇÏ¿´°í 1000 ¥ìM¿¡¼´Â 25%°¡ »ýÁ¸ÇÏ¿´´Ù. ±× °á°ú ¿ÜÇüÀû ÀÌ»óÀº º¹ºÎÆØ¸¸°ú ¼ÒȰü Çü¼ººÎÀüÀÌ ÀϹÝÀûÀ¸·Î ³ªÅ¸³µ°í 200 ¥ìM ÀÌ»óÀÇ ¾Æ¿¬Ã³¸® ½Ã ¸ðµç °³Ã¼¿¡¼ ÀÌ·¯ÇÑ Çö»óÀÌ ³ªÅ¸³µ´Ù. 400 ¥ìM ÀÌ»óÀÇ ³óµµ¿¡¼´Â ¸ðµç °³Ã¼¿¡¼ ½ÉÀåÅ»»öÀ» º¸¿´´Ù. ¶ÇÇÑ ½ÅüÀÇ Å»»ö°ú ´«ÀÇ ¼öÁ¤Ã¼ Ç츣´Ï¾Æ, ±×¸®°í ´À½¼ÇÑ ¼ÒȰüÀº 100¥ìM ÀÌ»óÀÇ ¾Æ¿¬Ã³¸®¿¡¼ ¸Å¿ì ºó¹øÈ÷ ³ªÅ¸³µ´Ù. ¾Æ¿¬Ã³¸® µÈ À¯»ýÀÇ ÆÄ¶óÇÉ Á¶Á÷ÀýÆí¿¡¼´Â ¸Á¸·ÀÇ ±¤¼ö¿ë±âÀÇ ÆÄ±«, ´«ÀÇ ÃÊÀÚü¹æ Ãà¼Ò, ½ÉÀå ÀûÇ÷±¸¼öÀÇ °¨¼Ò, ºñÁ¤»óÀû °£Á¶Á÷, ¿ø½Å°ü ¼¼Æ÷ÀÇ ÆØÀ±, ±ÙÀ° Çü¼ººÎÀü, ±×¸®°í ±¸ÀüÁ¤ÀÇ À¯µÎÁ¾ Çü¼ºµîÀÇ ÀÌ»óÀ» º¸¿´´Ù. ÀÌ·¯ÇÑ ÀÌ»óÀº ¹ÌÅäÄܵ帮¾ÆÀÇ ÆÄ±«¤Ñ $Ca^{2+}$°ú$Zn^{2+}$ÀÇ Ä¡È¯¿¡ ÀÇÇÑ ¼¼Æ÷°áÇÕÀÇ ÀúÇØ, ±×¸®°í ¾Æ¿¬¿¡ ÀÇÇÑ ÀûÇ÷±¸³» leghemoglobinÀÇ Çü¼º µîÀÌ ¿øÀÎÀÏ °ÍÀÌ´Ù. °ú·® ¾Æ¿¬¿¡ ÀÇÇØ À¯»ýÀÇ Ã¼ÀåÀº °¨¼ÒÇÏ¿´°í, Åë°èºÐ¼® °á°ú üÀåÀº ´ëÁ¶±ºÀÇ Ã¼Àå°ú ºñ±³ÇßÀ»¶§, 300 ¥ìM ¾Æ¿¬Ã³¸® ±ººÎÅÍ ¸Å¿ì À¯ÀǹÌÇÏ°Ô Ã¼ÀåÀÇ °¨¼Ò°¡ ³ªÅ¸³µ´Ù. ÇöÀç ÀÚ¿¬»óÅ¿¡¼ ¾ç¼·ùÀÇ ¼öÀû°¨¼Ò¿Í ±âÇü¹ß»ýÀÌ ¼¼°èÀûÀ¸·Î º¸°íµÇ°í ÀÖÀ¸¸ç, º» ¿¬±¸ÀÇ °á°ú·Î °í·ÁÇßÀ» ¶§, °úÀ× ¾Æ¿¬Àº ¼ö°è¸¦ ¿À¿°½ÃÄÑ ¾ç¼·ùÀÇ ¼öÀû°¨¼Ò¸¦ ÀÏÀ¸Å°´Â Áß¿äÇÑ ¿øÀι°Áú·Î »ý°¢µÇ¹Ç·Î ÀÌÀÇ °ü¸®¿¡ °ü½ÉÀ» µÎ¾î¾ß ÇÒ °ÍÀÌ´Ù. |
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| Concentrated releases of Zinc into water usually results from discharges associated with industrial purpose. The released zinc into soil is corroded and released into water. in aquatic environment, exess zinc is to the organisms and causes the growth inhibition and malformation of them as a heavy metal. In this study, excess zinc toxicity was tested by FETAX (frog embryo teratogenetic assay with Xenopus) as in vivo system. Xenopus embryos at st. 9 exposed to 100~900 ¥ìM of zinc for 7 days and 81% of individuals were survived in 100 ¥ìM, and 25% were survived in 1000 M of zinc solution. In external malformations, swelled belly and intestinal dysplasia were common, and all of tested individuals showed these malformations in 200 ¥ìM or higher concentration of zinc. In 400 ¥ìM or higher concentration, all of tested tadpoles showed faded heart. Also, hypo-pigmentation, lens hernia and loose digestive track were very frequently found in 100 ¥ìM of zinc. The histological study with paraffin section of zinc treated tadpoles showed following abnormalities; regeneration of photoreceptor on retina, reduced vitreous chamber in eye, reduction of red blood cells in heart, abnormal liver, swelling of pronephric cell, muscle dysplasia and palatal papilloma. These abnormalities may be caused by the degeneration of mitochondria, inhibition of cell adhesion, and the formation of leghemoglobin by zinc due to the substitution of $Ca^{2+}$ by $Zn^{2+}$. The body length was reduced due to the excess zinc. From a statistical result, body lengths of 300 ¥ìM or higher concentrative groups was significantly reduced comparing that of control group. Recently, many spontaneous malformations and reduction of amphibians are reported. From the results of present study, excess zinc might be a factor of amphibian reduction, and the control of zinc discharges is very important.range of normal paddy rice farming practice, and instead it could be achieved by reducing surface drainage outflow. Water-saving irrigation by reducing ponding depth, raising ridge height in rice field, and minimizing forced surface drainage are suggested to reduce surface drainage outflow. These practices can save water and protect water quality, however, deviation from conventional standard practices might affect the rice yield and further investigations are necessay. It was demonstrated that rainfall affects nutrient net outflow and paddy rice culture might be beneficial to water quality protection under normal rainfall condition. |
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| Xenopus Iaevis;excess zinc;teratogenesis;FETAX; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.36, no.1, 2003³â, pp.36-83
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200310103401473)
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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