• Title/Summary/Keyword: Genotoxic

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Differential Display Analysis of Gene Expression Induced under DCA Treatment in Rat Liver

  • Choi, Soon-Yong;Park, Ock-Jin
    • BMB Reports
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    • v.29 no.3
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    • pp.272-275
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    • 1996
  • The expression of genes induced by Dichloroacetate (DCA) treatment was analyzed by mRNA differential display. Purified total RNAs from rat liver treated with saline or DCA (100 mg/100 g b.w.) were reverse transcribed by using a set of oligonucleotide primers. The PCR products were resolved on a denaturing sequencing gel. PCR band representing mRNA expressed specifically in DCA-treated liver was excised and reamplified by PCR. A 120-bp c-DNA clone named IC1 was isolated and the DNA sequence of IC1 was analyzed. IC1 revealed 50% homology with 3' end of a mouse fibroblast growth factor mRNA This result indicates that DCA induces the expression of a gene which has a 50% homology with a Mouse fibroblast growth factor, and expression of this gene might be involved in non genotoxic process caused by DCA.

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Genotoxic evaluation of recombinant human erythropoietin (rHu-EPO) in shod-term assays. (인체 재조합 적혈구 조혈인자, rHu-EPO의 유전독성 평가)

  • 김형식;곽승준;천선아;임소영;안미영;김원배;김병문;안병옥;서동상
    • Environmental Mutagens and Carcinogens
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    • v.16 no.2
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    • pp.103-108
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    • 1996
  • The mutagenic potential of rHu-EPO was evaluated using the short-term genotoxicity tests including Ames, chromosome aberration and micronuclei tests. In Salmonella typhimurium assay, rHu-EPO did not show any mutagenic response in the absence or presence of S9 mix with TA98, TA100, TA1535, and TA1537. In chromosome aberration test, rHu-EPO did not show any significant effect on Chinese Hamster Ovary(CHO) cells compared with control. In micronucleus test using male ICR mice, a dose-dependence increase in the frequency of micronucleuted polychromatic erythrocytes(MNPCEs) was observed in bone marrow cells treated with rHu-EPO. However, it was related to the secondary effect of rHu-EPO and the number of MNPCEs was equal to spontaneous frequency. These results indicate that rHu-EPO does not show any positive response in short-term genotoxicity assays.

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Involvement of p38 Mitogen-Activated Protein Kinase in the Cell Growth Inhibition by Sodium Arsenite

  • Park, Jung-A;Kim, Ja-Young;Kim, Tae-Hwan;Yoo, Young-Do;Yoo, Seong-Yul;Cho, Chul-Koo;Lee, Yun-Sil;Lee, Su-Jae
    • Proceedings of the Korean Society of Toxicology Conference
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    • 2001.05a
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    • pp.133-133
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    • 2001
  • It is well known that p38 mitogen-activated protein kinase (p38MAPK) participates in cellular responses to mitogenic stimuli, environmental and genotoxic stresses, and apoptotic agents. Although there are several reports on p38MAPK in relation to cell growth and apoptosis, the exact mechanism of p38MAPK-mediated cell growth regulation remains obscure.(omitted)

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RECLINICAL TOXICITY STUDY OF A NEW PHOSPHODIESTERASE-5 INHIBITOR (I) ACUTE TOXICITY STUDY AND MUTAGENICITY

  • Kim, Dong-Hwan;Hyeon Cho;Kang, Kyung-Koo;Ahn, Byoung-Ok;Kim, Won-Bae
    • Proceedings of the Korean Society of Toxicology Conference
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    • 2001.05a
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    • pp.127-127
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    • 2001
  • Single-dose toxicity of a new phosphodiesterse inhibitor-5, DA -8159, was studied in rats via oral and intravenous routes and in mice via oral route. In addition, genotoxic potential of DA-8159 was investigated by using of the battery of test; reverse mutation test on bacteria, chromosomal aberration test on cultured mammalian cells and micronucleous test on mice.(omitted)

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Genotoxic Effects of Diesel Emission Particle Extract, $HgCl_2$ and $Pb(Ac)_2$ by the Mouse Bone Marrow Micronucleus Test (마우스 골수 소핵 시험에 의한 디젤분진, $HgCl_2$$Pb(Ac)_2$의 유전독성효과)

  • 허문영;최성규;유기선;손동헌
    • Journal of Korean Society for Atmospheric Environment
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    • v.5 no.1
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    • pp.62-67
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    • 1989
  • The clastogenic effects of the diesel emission particle extract (DEPE), mercuric chloride and lead acetate were examined by the mouse bone marrow micronucleus test. DEPE had a potent clastogenic effect by intraperitoneal injection with dose-response between 100 and 300mg/kg b.w.. Mercuric chloride and lead acetate also gave a clastogenic effects but mercuric chloride only had a dose-response between 1 and 3mg/kg b.w.. When DEPE was administrated with mercuric chloride or lead acetate, the frequency of micronucleated cells was slight but not significant increase in comparision to a single treatment with DEPE alone.

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Mutagenicity of 2-[(4- Cyanophenyl)amino] -3-chloro-1, 4- naphthalenedione (NQ-Y15) (2-[(4- Cyanophenyl)amino] -3-chloro-1, 4- naphthalenedione (NQ-Y15)의 돌연 변이원성)

  • 김봉희;정기화;유충규;창동신;이기선;전선덕;소동수;채상호;문창규
    • Environmental Analysis Health and Toxicology
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    • v.15 no.4
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    • pp.157-163
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    • 2000
  • 2- [(4- Cyanophenyl)amino] -3-chloro-1, 4- naphthalenedione (NQ-Y15) was asssayed for its genotoxic potential by using Salmonella typhimurium reversion assay and in vitro chromosome aberration test on Chinese hamster lung cells. In the Ames test, NQ-Y15 induced his + revertants of Salmonella typhimurium TA 98 and TA1537, reaching levels twice the negative control values. But, NQ-Y15 induced only his+ revertants of Salmonella typhimurium TA1537 more than twice the control values under the condition with metabolic activation system. In the cytogenetic test on chinese hamster lung cells. NQ -Y15 showed significant chromosomal aberrations, but the incidence was significantly reduced in the presence of metabolic activation.

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Estimates of Genotoxic Effect by the Pollen Analysis of Vines and Fruit trees

  • Sirunik, Yervandyan;Anna, Nebish;Rouben, Arutyunyan
    • Korean Journal of Environmental Biology
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    • v.24 no.4
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    • pp.368-371
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    • 2006
  • The complex analysis of male reproductive system of vines and fruit-tyees growing in zone of the Armenian Nuclear Power Plant (ANPP) is realized. The obtained data demonstrate that the homogeneous pollen with high fertility and optimal morphometric parameters in all variants is formed. The obtained results demonstrate that there is no one-sided effect of ANPP on the development and formation of investigated male generative system of vines and fruit trees. Thus, on the base of obtained results we can't confirm its deleterious effect on the environment.