• Title/Summary/Keyword: Reversion mutation test

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Genotoxicity Evaluation Using Reversion Mutation Test of SU-Eohyeol Pharmacopuncture (SU어혈약침의 복귀돌연변이시험을 이용한 유전독성평가)

  • Ku, Jaseung;Hwang, Ji Hye
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.36 no.4
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    • pp.113-119
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    • 2022
  • SU-Eohyeol pharmacopuncture(SUEP) was developed by adding Cervi Pantotrichum Cornu to Jungsongouhyul pharmacopuncture. This genotoxicity evaluation was performed to evaluate the mutagenic potential of the test substance SUEP agent using histidine, which requires strains of Salmonella typhimurium (TA98, TA100, TA1535, TA1537), and tryptophan, which requires Escherichia coli (WP2uvrA) strain in the presence and absence of metabolic activation. According to the results of the dose range finding study conducted prior to the main study, the dose levels of the test substance in the main study were determined as 100, 50, 25, 12.5, 6.25%, and positive and negative controls were established. As a result of the main study, the mean number of revertant colonies compared to negative controls was less than 2-fold at all dose levels of SUEP in all strains with and without metabolic activation. In the positive control group, the mean number of revertant colonies for each strain was markedly increased by more than two times compared to the negative control group. Based on the result of this study, the test substance, SUEP did not show any indication of mutagenic potential under the conditions of this study.

Mutagenecity Test of SDK (SDK시제품(가칭)에 대한 변이원성시험)

  • 정지윤;이원우;임종희;남정석;제정환;이광훈;강병철;이병희;박재학
    • Toxicological Research
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    • v.14 no.2
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    • pp.211-216
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    • 1998
  • In order to evaluate the mutagenic potential of SDK(skin decontamination kit) produced by Agency for Defense Development(ADD), were performed Salmonella typhimurium reversion assay, chromosomal aberration test on chinese hamster ovarian cells and in vivo micronucleus assay using mouse bone marrow cells according to the established regulation of Korean Food and Drug Administration. In the reverse mutation test using Salmonella typhimurium TA98, TA100, TA1535 and TA1537 did not in-crease the number of revertant at any of the concentration tested in this study. SDK did not increase the number of cells having structural or numerical chromosome aberration in cytogenetic test. In mouse micronucleus test, no significant increase in the occurrence oj micro nucleated polychromatic erythrocytes were observed in ICR male mice intraperitoneally administered with SDK. These results indicate that SDK has no mutagenic effects under these experimental conditions.

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Genotoxicicological Safety Estimate for the Rhus-II (옻나무 추출액(Rhus-II)의 안전성에 관한 유전독성학적 평가)

  • Choi Changsun;Han Dong Un
    • Journal of Food Hygiene and Safety
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    • v.20 no.1
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    • pp.18-21
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    • 2005
  • These observations were performed to investigate the safety of the natural herbs (Rhus-II) in respect of genotoxicity. This substance was examined in two in-vitro tests: (1) Salmonella typhimurium reversion assay (Ames test) in strain TA 98, TA 100, TA 1535 and TA 1537, (2) in vitro chromosome aberration test in cultured Chinese hamster ovary (CHO) cells. In the reverse mutation test, Rhus-II did not induced mutagenicity in Salmonella typhimurium reversion assay(Ames test) with or without metabolic activation. In the chromosome aberration assay using CHO cells, there was no increased incidence of structural and numerical aberrations with or without metabolic activation. These results indicated that, the Rhus-II had no genotoxicity.

Mutagenicity Study of (R)-JG-381, A New Antidiabetic Agent (항당뇨물질 (R)-JG-381의 변이원성 시험)

  • 오우용;주상섭;박형근;함광수;조장섭;이선미
    • Biomolecules & Therapeutics
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    • v.8 no.3
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    • pp.248-254
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    • 2000
  • (R)-JG-381, a R form of alkylglycidic acid derivative, was examined for mutagenicity in the reverse mutation test on bacteria, chromosomal aberration test on cultured mammalian cells and micronucleus test in mice. In the reverse mutation test on bacteria using Salmonella typhimurium strain TA98, TA100, TA102, TA1535, TA1537 with or without a metabolic activation system (S9 mix), (R)-JG-381 did not affect the revertant colonies but significantly increased revertant colonies in one test strain, TA98, compared with the vehicle control. In the chromosomal aberration (CA) test using cultured Chinese Hamster Lung fibroblast(CHL) cells, the number of aberrant cells was clot increased in the presence or absence of 59 mix at concentration of the (R)-JG-381 0.025 $\mu$l/m1 to 0.1 $\mu$l/m1, compared with vehicle control. In the micronucleus (MN) test, micronucleated polychromatic erythrocytes in the (R)-JG-381-treated mice were not different from those of the vehicle-treated mice.

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Study on Mutagenicity of DehydroevodiamineㆍHCl(DHED) (치료제 DehydroevodiamineㆍHCl(DHED)의 변이원성 연구)

  • 성이숙;정성윤;정주연;채규영;진미령;최봉웅;장병모;김대경
    • YAKHAK HOEJI
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    • v.46 no.3
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    • pp.208-212
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    • 2002
  • Dehydroevodiamine HCl (DHED), which is a component separated from Evodia rutaecarpa Bentham, has novel anticholinesterase and antiamnesic activities in the scopolamine-induced amnesia model. Several studies suggest that DHED might be an effective drug for the Alzheimer's disease and the vascular type of dementia. In order to evaluate the mutagenic potential of DHED, Salmonella typhimurium reversion assay, chromosomal aberration test on Chinese hamster lung cells, in vivo micronucleus assay using mouse bone marrow cells, and comet assay were performed. DHED did not increase the number of revertant in the reverse mutation test using Salmonella typhimurium TA1535, TA1537, TA98, TA100. DHED HCl, at concentration of 5 and 10 $\mu\textrm{g}$/mι, increased the number of chromosome aberrated Chinese hamster lung cells with 5 and 10%, respectively. In mouse micronucleus test, no significant increase in the occurrence of micronucleated polychromatic erythrocyte was observed in ICR mice orally administered with DHED. DHED was tested for ability to induce genotoxic effect in L5178Y cells (mouse lymphoma cells) using the single cell gel electrophoresis assay (comet assay). In comet assay, tail moment did not increase in L5178Y cells treated with 10, 100, 300 $\mu$M DHED.

Genotoxicity Study of Dimethyl Isophthalate in Bacterial and Mammalian Cell System

  • Chung, Young-Shin;Choi, Seon-A;Hong, Eun-Kyung;Ryu, Jae-Chun;Lee, Eun-Jung;Choi, Kyung-Hee
    • Molecular & Cellular Toxicology
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    • v.3 no.1
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    • pp.53-59
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    • 2007
  • This study was conducted to evaluate the mutagenic potential of dimethyl isophthalate (DMIP) using Ames bacterial reverse mutation test, chromosomal aberration test and mouse lymphoma $tk^{+/-}$ gene assay. As results, in Ames bacterial reversion assay, DMIP was tested up to the concentration of 5,000 ${\mu}g$/plate and did not induce mutagenicity in Salmonella typhimurium strains TA98, TA100, TA1535 and TA1537, and Escherichia coli WP2uvrA with or without metabolic activation (S9 mix). Using cytotoxicity test, the maximal doses of DMIP for chromosomal aberration assay were determined at 1,250 ${\mu}g/mL$, which was a minimum precipitation concentration ($IC_{50}>1,940\;{\mu}g/mL$ or 10 mM) and at 155 ${\mu}g/mL$ ($IC_{50}:155\;{\mu}g/mL$) in the presence and the absence, respectively, of S9 mix. DMIP in the presence of S9 mix induced statistically significant (P<0.001) increases in the number of cells with chromosome aberrations at the dose levels of over 250 ${\mu}g/mL$, when compared with the negative control. However, DMIP in the absence of S9 mix did not caused significant induction in chromosomal aberrant cells. In MLA, DMIP at the dose range of 242.5-1,940 ${\mu}g/mL$ in the presence of S9 mix induced statistically significant increases in mutation frequencies related to small colony growth, whereas any significant mutation frequency was not observed in absence of S9 mix. From these results, it is conclusively suggested that dimethyl isophthalate may be a clastogen rather than a point mutagen.

Genotoxicity Studies of the Complex of Acriflavine and Guanosine (Acriflavine과 Guanosine 복합체(AG60)의 유전독성시험)

  • 정영신;홍은경;김상건;안의태;이경영;강종구
    • Environmental Mutagens and Carcinogens
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    • v.22 no.2
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    • pp.106-111
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    • 2002
  • AG6O, the complex of acriflavine and guanosine, has been shown to possess the synergistic antitumorigenic activity in the previous paper (J. Pharm. Pharmacol. 1997, 49:216). In this study, we have investigated the genotoxic properties of AG60 using in vitro and in vivo system such as Ames bacterial reversion test, chromosomal aberration assay and micronucleus assay. In Ames reverse mutation test, AG60 treatment at the dose range up to 250 $\mu\textrm{g}$/plate caused the dose-independent random induction of the mutagenic colony formation in S. typhimurium TA98, TA100, TA1537, and E. coli WP2uvrA, while any mutagenic effect of AG60 wasn't observed in S. typhimurium TA1535. Any significant chromosomal aberration wasn't observed in chinese hamster lung (CHL) fibroblast cells incubated with PBS or AG60 at the concentrations of 2.5, 5, 10 $\mu\textrm{g}$/$m\ell$ for 24 hours without but even with 59 metabolic activation system for 6 hours. In vivo ICR mice, the intramuscular injection of AG60 at the doses of 7.15, 14.3, and 28.6 mg/kg did not induce the frequency of micronucleus formation. However, mitomycin C, as one of the positive controls at the dose of 2 mg/kg caused the 8.4% induction in the frequency of micronucleus and 24% increase in the chromosomal aberration.

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Studies on the Genotoxicity of the Gamma-irradiated Panax Ginseng Radix In Vitro and In Vivo (방사선조사 인삼의 유전독성에 관한 연구)

  • 하광원;정해관;오혜영;허옥순;손수정;한의식;정성철;최부영;김영미
    • Journal of Food Hygiene and Safety
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    • v.9 no.2
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    • pp.67-74
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    • 1994
  • This study was aimed to find out the comparative effects between non-irradiated, and 5kGy-10kGy of gamma-irradiated Panax Ginseng Radix powder on the genotoxicity for identification of possibility of DNA damage causing cancer. Four different short-term mutagenicity tests were used: (1) Salmonella typhimurium reversion assay (Ames test) (2) Chromosome aberration test in cultured Chinese hamster lung (CHL) fibroblast cells. (3) Micronucleus test in ddY mouse (4) Somatic mutation and recombination test in the wing cells of Drosophila melanogaster.Gamma-irradiated Panax Ginseng Radix powder revealed negative results in these four mutagenicity tests. This means gamma-irradiated ginseng could be safe on the genotoxic point of view.

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A Genotoxicological Safety Evaluation of Crude Antifungal Compounds Produced by Lactobacillus Plantarum AF1 and Lactobacillus Plantarum HD1 (Lactobacillus plantarum AF1와 Lactobacillus plantarum HD1이 생성한 조항균 물질의 유전학적 독성평가)

  • Chang, Hae-Choon;Koh, Sang-Bum;Lee, Jae-Joon
    • The Korean Journal of Community Living Science
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    • v.26 no.4
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    • pp.633-645
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    • 2015
  • This study investigates the genotoxicity of crude antifungal compounds produced by Lactobacillus plantarum AF1 (L.plantarum AF1) and Lactobacillus plantarum HD1 (L. plantarum HD1) isolated from kimchi. The genetic toxicity of crude antifungal compounds was evaluated in bacterial reverse mutation in Salmonella and Escherichia spp., chromosome aberrations in Chinese hamster lung cells, and micronucleous formations in mice. In bacterial reversion assays with Salmonella Typhimurium TA98, TA100, TA1535, TA1537, and WP2uvrA, crude antifungal compounds did not increase the number of revertant colonies in both the absence and presence of the 59 metabolic activation system. In the chromosome aberration test with Chinese hamster lung cells, crude antifungal compounds showed no increase in the frequency of chromosome aberrations in the short-period test with/without the S9 mix or in the continuos test. In the in vivo mouse micronucleus assay, crude antifungal compounds showed no increase in the frequency of polychromatic erythrocytes with micronuclei. The results show that crude antifungal compounds produced by L. plantarum AF1 and L. plantarum HD1 did not induce any genotoxicity.

Mutagenecity Test of Intralipidos (Intralipidos에 대한 변이원성시험)

  • Jung, Ji-Youn;Lee, Won-Woo;Ihm, Jong-Hee;Nam, Jeong-Seok;Che, Jeong-Hwan;Li, Guang-Xun;Kang, Byeong-Cheol;Yi, Beoung-Hi;Park, Jae-Hak;Lee, Yong-Soon
    • Toxicological Research
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    • v.14 no.3
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    • pp.453-457
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    • 1998
  • In order to evaluate the mutagenic potential of Intralipidos produced by Greenmate cooperation. We performed Salmonella typhimurium reversion assay, chromosomal aberration test on chinese hamster ovarian cells and in vivo micronucleus assay using mouse bone marrow cells. In the reverse mutation test using Salmonella typhimurium TA98 and TA100, Intralipidos did not increase the number of revertant at any of the concentration tested in this study. Intralipidos did not increase the number of cells having structural or numberical chromosome aberration in cytogenetic test. In mouse micronucleus test, no significant increase were observed in the occurrence of micornucleated polychromatic erythrocytes in ICR male mice intraperitoneally administered with Intralipidos. These results indicate that Intralipidos has no genetic toxicity under these experimental conditions.

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