• Journal of Yeungnam Medical Science
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• 제4권2호
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• pp.105-111
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• 1987

본 연구에서 우리는 음식물 특히 철판구이 쇠고기를 섭취한 후 배설된 사람뇨에서 돌연변이 유발능 물질의 존재유무를 관찰하고저 하였다. Ames씨 방법에 따라 2종(TA 98, TA 100)의 Salmonella typhimurium을 이용하였으며, 흡연 자체에 의해 야기될 수 있는 돌연변이 유발능을 배제하기 위하여 비흡연자인 건강한 두 남녀의 소변을 사용하였다. 300g의 철판구이 쇠고기를 먹은 후 배설된 뇨의 돌연변이 유발능은 남여 모두에서 약 3시간 후부터 검출되기 시작하여 6시간 후 가장 높았다가 그후 감소하는 경향을 관찰 할 수 있었다.

• Toxicological Research
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• 제17권
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• pp.319-321
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• 2001

Taihu Lake is a major water source for part of Yangtze Delta, which is one of the most urbanized and economically prosperous areas in China. In last couple of decades, some parts of the lake were highly polluted due to eutrophication. This study analyzed dioxin-like potential and mutagenic potential in surface water samples from Taihu Lake. The samples were prepared by XAD-2 resin procedure. A batch of biological assays, including dioxin-like potential microassay with the rat hepatocyte cell line H411E, and Ames test was employed in the research. Results showed that jour water samples have high content of dioxin-like biological potential, the highest activity TEQ to 2,3,7,8-TCDD was 48 pg/ι in sample 1. The mutagenic effect with reading-frame shifting mechanism was confirmed in 3 of 4 samples. The effective sewage treatment facilities and reliable monitoring surveillance system are urgently needed for this area.

• 한국환경성돌연변이발암원학회지
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• 제22권2호
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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.

• 생약학회지
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• 제36권2호통권141호
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• pp.93-96
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• 2005

Mutagenicity of Gamgung-tang (GGT) was tested using in vitro S-9 mixture in vitro host-mediated assay with Salmonella typhimurium. In the previous reports, GGT was tested for the safety using Ames(-S-9), Bacillus subtilis Rec, and umu gene expression mutagenicity tests. Mutagenic activity in any assays we tested was not found. In this report, we further investigated safety of GGT after metabolic activation in vivo. Ames test with S-9 mixture and host-mediated assay with Salmonella typhimurium TA98 were used to identify metagenic property of GGT. GGT was administered 3 times with i.m. to Balb/c mice did not induced mutagenic effect in Salmonella typhimurium TA98 recovered from the liver after 3.5h with i.p. treatment. Over the entire dose range $(3{\sim}150mg/mouse)$ tested no toxicity was detected to the bacterial cells. These results suggest that there was no DNA damage and mutagenicity by GGT.

• Food Science and Biotechnology
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• 제17권4호
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• pp.839-841
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• 2008

The mutagenicity after heating of different sugars (glucose, fructose, galactose, and tagatose) on the non-enzymatic browning reaction in different sugars and glycine model system was investigated. The model system containing 0.2 M glycine and 0.2 M of different sugars in 10 mL water was heated at $150{\pm}5^{\circ}C$ for 30 min. After heating, degree of non-browning reaction intensity and mutagenicity using Salmonella typhimurium TA 98 were examined. Heated glycine model systems containing different sugars increased their mutgenicity ranged from 30 to 372 revertant colonies. After heating for 40 min, mutagenicity was achieved with glycine model systems containing 4 different sugars with by 145, 356, 206, and 369 revertants per plate, respectively. The glycine model systems containing fructose or tagatose were significantly (p<0.05) higher mutagenic activity than glycine model systems containing glucose or galactose after 40 min of heating. The linear regression between Maillard reaction intensity and mutagenic activities (slope=32.38, $R^2=0.93$) indicates that mutagenicity could be fully ascribed to Maillard reaction products.

• 한국균학회지
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• 제1권1호
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• pp.23-28
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• 1973

The soil of Kwangneung area(Kyeunggi-Do) was inoculated directly into wheat-bran-media and after $3{\sim}4$ days of incubation, a Penicillium species whose cellulase activity was 1011u/g was isolated. With the treatment of mutagenic agents an improved strain(cellulase activity: 1303u/g) was obtained. This strain was screened again by mono-spore isolation method. Finally a strain C8-14 (cellulase activity: 2351u/g) which had lesser spores than the wild strain was obtained.

• 한국수산과학회지
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• 제31권4호
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• pp.581-586
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• 1998

해조류 추출물을 이용하여 가열 식품 유래의 돌연변이 유발물질인 PhIP와 MeIQx에 대한 돌연변이원성 억제소재를 개발하기 위하여 연구한 결과, PhIP와 MeIQx에 대한 돌연변이 억제작용은 갈조류가 녹조류 및 홍조류에 비해 우수하였다 특히 갈조류 중에서는 감태, 곰피, 다시마 및 미야베모자반에서 그 효과가 우수하였다. 그 중에서 곰피를 diethyl ether, chloroform, ethyl acetate 및 수용성 획분으로 분획하였을 때, 수용성 획분을 제외한 비극성 획분에서 억제효과가 강하게 나타났는데, ethyl acetate 획분에서 강하였다. 곰피의 ethyl acetate 획분을 Sephadex LH20으로 분획 하여 분리 한 결과, 활성 획 분 A-7은 PhIP에 대하여는 $90\%$/mg 이상, MeIQx에 대하여는 $80\%$/mg의 억제효과를 나타내었고, 207.7 및 232nm에서 흡수파장을 나타내었다.

• 동아시아식생활학회지
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• 제7권4호
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• pp.527-537
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• 1997

This study was performed to determine the effects of antimutagenicity of Porturaca oleracea L. in Korea. In Ames test, the ethanol extract of Poturaca oleracea L. inhibited mutagenic activity of N-methyl-N'-nitro-N-nitrosoguanidine(MNNG), , 4-nitroquinoline-1-oxide(4NQO), benzo($\alpha$)pyrene (B($\alpha$)P) and 3-amino-1,4-dimethyl-5H-pyrido-(4,3-b)indole (Trp-P-1) in Salmonella typhimurium TA98 and TA100. But hot-water extract Poturaca oleracea L. only Inhibited mutagenic activity of MNNG in Salmonella typhimurium TA100, On 4NQO, the ethanol extract 100-1,600$\mu\textrm{g}$/plate of Porturaca oleracea L. showed a slight inhibitory effect of 13-48%, 4-47% in TA98 and TA100, respectively, but on MNNG, it showed higher inhibitory effect of 6-86% in TA100, And the treatment of 1,600$\mu\textrm{g}$/plate of ethanol extract of Porturacea L. had strong antimutagenicity with 74-87% inhibition against TA98 and TA100 induced by B(a)P and with 85-93% inhibition against TA98 and TA100 induced by Trp-P-1. The ethanol extract was fractionated with ether. chloroform, ethylacetate, butanol and water. Among them, most of the fraction except water fraction showed strong antimutagenicity effects against mutation induced by 4-NQO, MNNG, B(a)P and Trp-P-1. Chloroform fraction had strong antimutagenicity with 91% inhibition against TA100 induced by MNNG, diethyl etherfraction had strong antimutagenicity with 92%, 98% inhibition against TA98 and TA100 induced by 4NQO, Chloroform fraction had strong antimutagenicity with 97% inhibition against TA100 induced by B (a)P and diethyl etherfraction had strong antimutagenicity with 98% inhibition against both strain Induced by Trp-P-1, respectively.

• Toxicological Research
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• 제34권2호
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• pp.163-172
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• 2018

Air pollution is increasing, along with consumption of fossil fuels such as coal and diesel gas. Air pollutants are known to be a major cause of respiratory-related illness and death, however, there are few reports on the genotoxic characterization of diverse air pollutants in Korea. In this study, we investigated the mutagenic activity of various particles such as diesel exhaust particles (DEP), combustion of rice straw (RSC), pine stem (PSC), and coal (CC), tunnel dust (TD), and road side dust (RD). Ultra-fine particles (UFPs) were collected by the glass fiber filter pad. Then, we performed a chemical analysis to see each of the component features of each particulate matter. The mutagenicity of various UFPs was determined by the Ames test with four Salmonella typhimurium strains with or without metabolic activation. The optimal concentrations of UFPs were selected based on result of a concentration decision test. Moreover, in order to compare relative mutagenicity among UFPs, we selected and tested DEP as mutation reference. DEP, RSC, and PSC induced concentration-dependent increases in revertant colony numbers with TA98, TA100, and TA1537 strains in the absence and presence of metabolic activation. DEP showed the highest specific activity among the particulate matters. In this study, we conclude that DEP, RSC, PSC, and TD displayed varying degrees of mutagenicity, and these results suggest that the mutagenicity of these air pollutants is associated with the presence of polycyclic aromatic hydrocarbons (PAHs) in these particulate matters.

• 한국식품위생안전성학회지
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• 제14권4호
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• pp.386-396
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• 1999

일상적으로 먹는 생선류, 육류 가공품들은 전형적인 방법으로 가열·조리하면 변이원성(mutagenic activity)이 나타난다. 식품의 제조 방법들은 변이원성의 생성에 뚜렷한 영향을 미치는데, 조리된 육류 제품들에서 발견되는 주요 식품 변이원들은 이환방향족아민(heterocyclic amines)들로 알려져 있다. 이중 몇 가지는 장기간의 동물실험 결과, 설치동물에서 발암성이 관찰되었으며, 사람에 있어서도 여러 암의 발병과 관련성이 높다는 증거들이 제시되고 있다. 모델 실험에서 몇가지 열(thermic) 변이원을 동정한 결과 creatine, creatinine, 아미노산 및 당 등 식품에 존재하는 성분들이 열 변이원 생성의 전구체인 것으로 나타났다. 건강상 관점에서 보면 이를 감소시키거나 식품 변이원의 생성을 막는 것이 바람직하므로 일반 가정에서 조리하는 동안 변이원이 형성되는 반응조건 및 전구체들에 대한 깊은 이해가 필요하다고 하겠다. 육류, 생선을 포함한 고단백 식품을 생산하는 식품업체에서도 가공설비의 최적조건 설정시 품질적인 측면뿐만 아니라 이환방향족아민의 안전성이 같이 고려되어야 할 것이다. 그러나 우리나라에서는 이환방향족아민에 대한 인식이 부족하고, 노출량 및 위해도 평가작업이 거의 이루어지고 있지 않아 국민보건향상 측면에서 이에 대한 연구가 시급하다고 본다.