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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.20, no.2, 2002³â, pp.158-164
ÀÚÁÖ´Þ°³ºñ ¹Ì¼¼ÇÙ ºÐ¼®¹ýÀ» ÀÌ¿ëÇÑ ºñ½ºÆä³î ¿¡ÀÌ ¹× °¨¸¶¼±ÀÇ »ý¹°ÇÐÀû ¿µÇâ ºñ±³ ¿¬±¸
( Comparative Study on Biological Effects of Gamma-Radiation and Bisphenol A with Tradescantia Micronucleus Assay )
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Some of synthetic chemicals can net as an endocrine disrupting substance in higher animals. Dioxins, DDT, PCBs and bisphenol A (BPA) are classified into endocrine disruptors and aye under a strict control in many countries. This research was designed to compare the clastogenic effects of BPA to those of ionizng radiation to establish the relaltive effectiveness of BPA by means of Tradescantia micronucleus assay. For the uptake of the BPA through the stems, groups of fresh cuttings of Tradescantia BNL 4430 weve placed in BPA solutions of 0 to 4 $mu$M for 6 hours under continuous aeration. The other groups of the cuttings were irradiated with 0 to 0.5 Gy of gamma- rays. The frequencies of micronucleus showed a positive dose- response relationship in the range of 0 to 0.5 Gy, and a clear concentration-response relationship in the experimental range of BPA concentrations. By comparing the two experimental results, it is possible to estimate the BPA concentration and its equivalent radiation dose for a fixed value of MCN frequency. BPA of $ll.8mu{M}$ can give rise to 53.3 MCN/100 tetrads, which is the same frequency induced by 25 cGy of gamma- rays. It is of biological importance that clinical symptoms start to develop after a whole body exposure to radiation higher than 25 cGy. The results indicate that the pollen mother cells are an excellent biological end- point for toxicity test of suspected endocrine disrupting chemicals such as bisphenol A, cotylphenol and nonylphenol.
 
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Radiation;Bisphenol A;Tradescantia;Micronucleus;
 
ȯ°æ»ý¹° / v.20, no.2, 2002³â, pp.158-164
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921492641)
¾ð¾î : Çѱ¹¾î
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