• 사상체질의학회지
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• 제19권2호
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• pp.170-178
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• 2007

1. Objective This study was aimed to screen the potential antitumor activity of one kinds of Korean medicinal herb extracts against cancer cell lines and to evaluate the growth inhibition effect of L-1210 and S-180 cancer cell lines. 2. Methods It confirmed Anemarrhena asphodeloides extracts to screen the potential antitumor activity. Then, it was extracted with 4 kinds of solvents ; hexane, ethyl acetate, butanol and $H_2O$, and the Growth inhibition effect of these extracts were determined against cancer cell and normal cell. The results were as follows : The IC50(50% inhibitory concentration) values of Anemarrhena asphodeloides extracts were shown to be $253{\mu}g/ml$ against L-1210 cell lines. The IC50 values of ethyl acetate extracts were shown to be $915{\mu}g/ml$ against L-1210 cell lines. The IC50 values of butanol extracts were shown to be $52.3{\mu}g/ml$, $485{\mu}g/ml$ against L-1210, S-180 cell lines, respectively. The butanol extracts were more selectively effective than other extracts to cancer cell lines. 3. Conclusion From these data, it could be concluded that the Anemarrhena asphodeloides extracts to the Growth inhibition effect of L-1210 and S-180 cancer cell lines.

• 식물병연구
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• 제14권3호
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• pp.187-192
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• 2008

본 연구에서는 키토메이트, 다이균, IC-66D, 골드보르도, 바이오스팟 등 5종의 친환경농자재의 포도 주요 균류병 병원균 7가지에 대한 생장억제 효과를 검정하였다. 병원균의 생장억제 효과는 친환경농자재 별로 차이를 보였는데, 천연 식물추출물성분인 다이균의 생장억제 효과가 가장 우수하였다. 다이균은 $2,500{\mu}g{\cdot}mL^{-1}$을 포함한 PDA 배지에서 C. gloeosporioides 04-159를 제외한 병원균의 균사생장을 75% 이상 억제하였다. 키토메이트의 생장억제 효과는 병원균에 따라 큰 차이가 있었는데 $40,000{\mu}g{\cdot}mL^{-1}$을 함유한 PDA 배지에서 B. cinerea 06-063의 균사생장을 81.1% 억제한 반면에 탄저병균인 C. gloeosporioides 04-159는 6.5% 균사 생장억제율을 보였다. 두 가지 보르도액 제제인 IC-66D와 골드보르도의 생장억제 효과는 흰얼룩 증상의 원인균인 Acremonium sp.을 제외하고 IC-66D가 골드보르도보다 약간 높았다. 바이오스팟은 다이균 다음으로 생장억제 효과가 높았는데 특히 탄저병균인 C. gloeosporioides 04-159에 대해서는 사용한 농자재 중에서 가장 높았다. 키토메이트, 바이오스팟, 골드보르도의 갈색무의병 포자 발아억제율은 같은 농도에서의 균사 생장억제율보다 월등히 높았다. 본 실험은 포도 친환경적병 방제를 위해서는 한 가지 친환경농자재를 사용할 것이 아니라 여러 가지 제제를 다양하게 사용할 것을 제안한다.

• 고려인삼학회:학술대회논문집
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• 고려인삼학회 1990년도 Proceedings of International Symposium on Korean Ginseng, 1990, Seoul, Korea
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• pp.102-110
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• 1990

Antitumor polyacetylenlc alcohol, panaxytriol (Ci7 H2603), was isolated and purified from a Powder of the root of Panax ginseng C.A. Meyer. Panaxytriol Possesses unusual Property of being soluble in both water and organic solvents. Panaxytriol inhibited the growth of various kinds of human cultured cell lines in dose-dependent fashion in vitro. The in vivo effects of panaxytriol were tested against C57BU6 mice transplanted with Bl6 melanomas. Panaxytriol (8 and 40 mg/kg) administered intramuscularly (im) produced significant tumor growth delays in mice. Although a detailed mechanism of growth inhibition by panaxytriol is unknown, preliminary results appear to implicate a surface membrane site of action. And its action seems to be more dose-dependent than time-dependent. Finally, panaxytriol pharmacokinetics was evaluated in mice given single 8 mgrkg doses intraperitoneally(ip) or im. Serum panaxytriol content was measured using both tumor growth inhibitory assay and a gas chromatographic method. The maximum serum panaxytriol content after ip and im administration was 35.0 and 1.61 ug/ml respectively. These results indicate that the compound may act as cytotoxic substance even in-patients. Keywords Panax ginseng, panaxytriol, tumor growth inhibition

• International Journal of Oral Biology
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• 제38권4호
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• pp.175-180
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• 2013

Xylitol is a five-carbon sugar alcohol that reduces the incidence of caries by inhibiting the growth of oral streptococci, including Streptococcus mutans. Since xylitol is transported via the fructose phosphotransferase system, we hypothesized that it could also affect the growth of other oral bacteria strains. We tested the effects of xylitol against non-periodontopathogenic oral bacteria frequently found in healthy subjects as well as periodontopathogens including Porphyromonas gingivalis, Treponema denticola, and Tannerella forsythia. With 5% xylitol, Streptococcus vestibularis and Gemella morbillorum showed marked growth inhibition. With 10% xylitol, all of the tested periodontopathogens and Actinomyces naeslundii showed marked growth inhibition, whereas the growth inhibition of Neisseria mucosa, Neisseria sicca and Veillonella parvula was mild only. Xylitol is a widely used sweetener and the concentration used in our experiment is easily achieved in the oral cavity. If xylitol reduces the growth of periodontopathogens more preferentially, it could also reduce the prevalence of these pathogens and have clinical utility in the prevention or treatment of periodontal disease.

• Preventive Nutrition and Food Science
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• 제8권2호
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• pp.149-153
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• 2003

Effects of kimchi and its ingredients, vitamin C and $\beta$-sitosterol on the growth of Helicobacter pylori were investigated. Three kimchi variations were studied: a standard recipe (kimchi I) and two functional variations for cancer prevention and treatment made with organically grown ingredients (kimch II and III). Methanol extracts and juices from kimchi I and III did not inhibit the growth of H. pylori. However, 10 mm and 12 mm inhibition zones were formed by methanol extract and juice from kimchi II, which had higher concentrations of red pepper powder (RPP) than those of kimchi I and III. Among the major kimchi ingredients, methanol extracts of RPP, garlic and ginger substantially inhibited the growth of H. pylori. The maximal inhibition zone (30 mm) was attained with garlic treatment. Inhibitory effects of the RPP, garlic and the sub-ingredient mixture (prepared with radish, garlic, RPP, ginger, green onion, sugar and fermented anchovy juice) on H. pylori were decreased by lactic acid bacteria fermentation. Neither the fermented garlic nor the fermented sub-ingredient mixture inhibited the growth of H. pylori. But, the inhibition Bone of fermented RPP was 12 mm, which was less than the 16 mm inhibition zone formed by the non-fermented RPP. Vitamin C and $\beta$-sitosterol which are known to be functional active compounds of kimchi also showed no inhibitory effect on the growth of H. pylori after 3 days of incubation. Further study is needed to determine why the inhibitory effect is removed or decreased by lactic acid fermentation, and to determine if fresh kimchi and lactic acid bacteria of kimchi can inhibit the growth of H. pylori.

• Journal of Microbiology
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• 제42권2호
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• pp.111-116
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• 2004

It is known that Bacillus subtilis glutamyl-tRNA synthetase (GluRS) mischarges E. coli $tRNA_{1}$$^{Gln}$ with glutamate in vitro. It has also been established that the expression of B. subtilis GluRS in Escherichia coli results in the death of the host cell. To ascertain whether E. coli growth inhibition caused by B. subtilis GluRS synthesis is a consequence of Glu-$tRNA_{1}$$^{Gln}$ formation, we constructed an in vivo test system, in which B. subtilis GluRS gene expression is controlled by IPTG. Such a system permits the investigation of factors affecting E. coli growth. Expression of E. coli glutaminyl-tRNA synthetase (GlnRS) also amelio-rated growth inhibition, presumably by competitively preventing $tRNA_{1}$$^{Gln}$ misacylation. However, when amounts of up to 10 mM L-glutamine, the cognate amino acid for acylation of $tRNA_{1}$$^{Gln}$, were added to the growth medium, cell growth was unaffected. Overexpression of the B. subtilis gatCAB gene encoding Glu-$tRNA^{Gln}$ amidotransferase (Glu-AdT) rescued cells from toxic effects caused by the formation of the mis-charging GluRS. This result indicates that B. subtilis Glu-AdT recognizes the mischarged E. coli Glu-$tRNA_{1}$$^{Gln}$, and converts it to the cognate Gln-$tRNA_{1}$$^{Gln}$ species. B. subtilis GluRS-dependent Glu-$tRNA_{1}$$^{Gln}$ formation may cause growth inhibition in the transformed E. coli strain, possibly due to abnormal protein synthesis.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제30권4호
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• pp.333-344
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• 2008

The objectives of this study was to explore the growth pattern of the oral squamous cell carcinoma when overexpressed COX was inhibited, explore the pathway that COX inhibitors suppressed the proliferation of cancer cells, and then hereafter investigate the potential of COX as chemopreventive target for oral squamous cell carcinoma. For confirming the COX-dependent effect and mechanisms on growth of the oral cancer cells, we treated the nonselective NSAID, Mefenamic acid and COX-2 selective inhibitor, Celecoxib in HN4 cell line. And then the cell line was evaluated with MTT assay and growth curve, the production of PGE2, total RNA extraction and RT-PCR analysis, and TEM The results were obtained as follows: 1. After administration of medication, in the result of MTT assay, Celecoxib inoculated group inhibit the cell growth rather than Mefenamic acid inoculated group. 2. The growth curve of cell line showed as time passes by there was a dramatic cell growth in the control group, and gradual growth inhibition was found in medication inoculated group and, in Celecoxib inoculated group there was more inhibition of cell growth. 3. After the administration of medication, Celecoxib tend to inhibit the synthesis of PGE2 more than Mefenamic acid. Mefenamic acid inhibit the synthesis of PGE2 more as the concentration gets high, but Celecoxib inhibited the synthesis of PGE2 even in low concentration. 4. After the administration of medication, the revelation of COX mRNA in cell line, there was a 50% decrease in COX-1, 60% decrease in COX-2 as in $50{\mu}M$ Mefenamic acid, and in Celecoxib $50{\mu}M$ there was not much difference in COX-1 and 90% decrease in COX-2 was found. 5. HN4 cell line showed broken nucleus and tangled cytoskeleton bundles in cytoplasm which meant apoptotic features after the treatment of Celecoxib in TEM view. Depending on the above results, we estimate that the inhibition of the expression of COX-2 cause the growth suppression of the oral squamous cell carcinoma, and it get achieved through pathway of reduced PGE2 production and increased apoptosis. In addition to, because COX-2 selective inhibitor specifically act to COX-2, it is considered that COX-2 selective inhibitor has the adequate potential as chemopreventive agent for oral squamous cell carcinoma.

• 한국버섯학회지
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• 제6권1호
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• pp.32-37
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• 2008

본 연구는 뽕잎 추출물에 눈꽃 동충하초 균사체(Paecilomyces japonica) 배양액의 Propionibacterium acnes에 대한 생육 억제 활성을 조사한 것이다. 배양 배지내의 뽕잎 추출물 농도는 3%일 때 가장 높은 여드름 균 생육 억제 활성이 나타났으며, 3% 농도의 뽕잎 추출물을 이용한 균사체 배양날짜별 활성은 25일 배양시 가장 높은 여드름 균 생육 억제 활성을 확인 할 수 있었다. 또한 여드름 균에 생육 억제 활성을 가지는 물질은 동충하초 균사체의 2차 대사산물로 판단 할 수 있었다. 뽕잎 추출물에 동충하초 균사체 배양액의 처리농도별 여드름 활성은 처리 농도가 상승할수록 증가하였다. 그리고 5% 감자만을 넣고 배양하였을 경우 여드름 균의 활성이 나타나지 않았으며, 합성 배지인 PDB를 사용 시 뽕잎 추출물을 이용해 배양하였을 때보다 낮은 활성을 나타내었다. 또한 뽕잎 추출물에 동충하초 균사체 배양액의 여드름균 생육 억제 활성의 열 안정성을 확인하기 위한 열처리 결과, $100^{\circ}C$에서 45분 까지 열에 안정함을 확인 할 수 있었다. 이러한 결과로 볼 때 뽕잎 추출물에 동충하초 배양액의 여드름균 생육 억제 물질은 배당체 또는 peptide 인 것으로 판단된다. 따라서, 뽕잎 추출물을 이용한 동충하초 균사체 배양액은 여드름균 생육 억제 활성이 뛰어나며, 열에 안정한 천연 여드름 억제 화장품료 조성물로서의 이용가능성이 확인 하였다.

• 생명과학회지
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• 제22권6호
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• pp.844-851
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• 2012

섬애약쑥, 인진쑥, 약쑥, 강화사자발쑥 및 개똥쑥 열수 추출물을 제조한 다음 항산화 및 항암활성을 비교 분석하였다. 5종의 쑥 추출물 중 총 페놀 함량은 인진쑥에서 유의적으로 가장 높았으며, 다음으로 섬애약쑥, 개똥쑥, 약쑥 및 강화사자발쑥 순이었다. 플라보노이드 함량도 인진쑥이 가장 높았고, 섬애약쑥은 인진쑥과 유의차가 없었다. 추출물의 농도를 달리하여 항산화능을 측정한 결과, DPPH 라디칼 소거능은 50 ${\mu}g/ml$ 농도에서 섬애약쑥의 활성이 가장 높았고, NO 라디칼 소거능은 200 ${\mu}g/ml$ 농도에서 약쑥, 강화사자발쑥 및 개똥쑥이 약 50% 이상의 활성을 나타내었으며, 이들 시료간에 유의차는 없었다. FRAP법에 의한 항산화능은 섬애약쑥 및 인진쑥에서 높게 나타났으며, ${\beta}$-carotene 존재 하에서의 항산화능 또한 섬애약쑥 및 인진쑥이 100 ${\mu}g/ml$ 농도에서 50% 이상의 높은 활성을 나타내었다. 400 ${\mu}g/ml$ 농도에서 인체 자궁경부 상피암 세포인 HeLa의 증식억제 활성은 인진쑥이 80% 이상으로 활성이 높았고, 유방암 세포인 MCF-7의 대해서는 강화사자발쑥과 섬애약쑥이 80% 이상의 증식억제 활성을 보였다. 이상의 결과, 쑥 추출물은 높은 항산화 활성과 암세포 증식억제 활성을 나타내었으며, 특히 항산화 활성은 ascorbic acid 이상의 높은 활성을 나타내어 천연 기능성 식품 소재로써 활용 가치가 높을 것으로 생각된다.

• 한국환경과학회지
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• 제11권9호
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• pp.979-985
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• 2002

Laboratory experiments were conducted to investigate the effect of ceramic-treated water on the inhibition of algal growth. The growth of Scenedesmus quadricauda and Chlorella vulgaris was enhanced by the ceramic-treated water in Allen medium containing high concentration of nutrients, but inhibited in natural water containing low concentration of nutrients. The growth of Oscillatoria tenuis and Microcystis aeruginosa was inhibited in both Allen medium and natural water. When comparing the effects of ceramic-treated water 1 (NC1) and 2 (NC2), the growth of O. tenuis and M. aeruginosa was somewhat enhanced by NC1, whereas inhibited by NC2. Therefore, it is suggested that NC2 can be more effective than NC1 in controlling the algal growth.