• 제목/요약/키워드: anti-fungal

검색결과 222건 처리시간 0.026초

NQ304, A NOVEL ANTITHROMBOTIC AGENT, INHIBITS THE PROLIFERATION OF VASCULAR SMOOTH MUSCLE CELLS

  • Kim, Jin-Ho;Kim, Tack-Joong;Ryu, Chung-Kyu;Hong, Jin-Tae;Yun, Yeo-Pyo
    • 한국독성학회:학술대회논문집
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    • 한국독성학회 2002년도 Current Trends in Toxicological Sciences
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    • pp.119-119
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    • 2002
  • Several 1,4-naphthoquinone derivatives have been reported to possess many pharmacological effects such as anti-viral, anti-fungal, anti-cancer and anti-platelet activities. However, little has been known about functional role in vascular smooth muscle cells (VSMCs).(omitted)

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진균과 식물의 Phenylalanine Ammonia-lyase 그리고 세균의 Histidine Ammonia-lyase 간의 면역학적 관계 분석 (Immunological Relationships among Fungal and Plant Phenylalanine Ammonia-lyases and Bacterial Histidine Ammonia-lyase)

  • 현민우;윤여홍;서동연;한지혜;김성환
    • 한국균학회지
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    • 제39권3호
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    • pp.205-212
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    • 2011
  • 진균의 phenylalanine ammonia-lyase(PAL)와 식물의 PAL간 그리고 PAL과 histidine ammonia-lyase (HAL)간의 구조적 특성 관계에 대한 이해를 얻기 위해 옥수수병원균인 깜부기균(Ustilago maydis)의 PAL에 대한 면역학적 분석을 수행하였다. 진균의 PAL 항체와 식물의 PAL 항체를 이용하여 분석하였을 때 실험한 모든 종의 PAL 간에 교차반응이 나타났다. 알팔파 PAL 항체와 포플라 PAL 항체 모두 식물 PAL은 강하게 인식하였으나 진균의 PAL은 약하게 인식하였다. U. maydis PAL은 Rhodotorula glutinis 효모의 PAL만 약하게 인식하였다. U. maydis PAL은 식물의 PAL에 대해서 낮은 친화성을 보였으나 Pseudomonas 세균의 HAL에 대해서는 강한친화성을 보였다. 2종의 식물 PAL 항체들 또한 Pseudomonas 세균의 HAL에 대해 강한 친화성을 보였다. 진균과 식물의 PAL 항체는 PAL 효소의 활성 저해를 나타냈으며 세균의 HAL 효소의 활성에 대해서도 중도적 저해를 나타냈다. 세균의 HAL 항체는 식물과 효모와 Ustilago PAL 중에 Ustilago PAL 활성만 저해하였다. 식물의 PAL과 진균의 PAL 모두 효모의 PAL 활성은 저해하지 못했다. 본 연구는 PAL과 HAL간에 면역학적 관계가 있음을 처음으로 보고한다.

항진균 알릴아민 유도체의 합성과 생물학적 평가 (Synthesis and Biological Evaluation as a Potential Antifungal Allylamine Derivatives)

  • 정병호;정순영
    • 약학회지
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    • 제48권4호
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    • pp.254-260
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    • 2004
  • Structure-activity relationship studies of allylamine type of antimycotics were carried out to evaluate the effect of naphthyl and methyl portion of naftifine. Compounds with 2,4-difluorophenyl( 2a-5a), 2,5-difluorophenyl(2b-5b), 4-ethylphenyl(2c-5c), 2-hydroxyphenyl(2d-5d) and 2-methylnaphthyl(2e-5e) instead of naphthyl group with hydrogen(3a-3e), methyl(4a-4e), and ethyl(5a-5e) in the place of methyl in naftifine were synthesized and tested their in vitro anti-fungal activity against five different fungi. Eight compounds( 3a, 4a, 5a, 3d, 4d, 4d, 5d, 3e, and 4e) showed significant anti-fungal activity against T. mentagroPhytes. (E)-N-(3-Phenyl-2-propenyl)-2- hydroxy-benzenemethaneamine( 3d) displayed moderate antifungal activity against all five different fungi.

방균실란트의 방균지속성 평가 (Antifungal Durability Evaluation of Sanitary Sealant)

  • 서연원;정진영;안명수;김성현;배기선
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2014년도 추계 학술논문 발표대회
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    • pp.65-67
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    • 2014
  • There are many elastomeric joint sealant applications in construction such as structural glazing, weatherproofing and insulating glass fabrication etc. Each sealant joints require unique durability functions to perform well through building life cycle. Elastomeric joints in bathroom and kitchen is one of areas which require durable sealing. In this application, anti fungal durability is proprietary function of sealant during building life cycle. Premature failure of anti fungus resistance of sealant is putting big stresses to general contractor as well as the inhabitants due to costly rework and poor sanitation. Accordingly, when chemists design a product, they must take into account various parameters not only formulation components also test conditions in order to have long term fungal durability. This paper reviews several biocide options with various industry standards for fungus resistance performance to suggest making new test method for construction sealant industry.

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Vateria acuminata Hyne으로 만든 오일의 항세균 및 항진균 효과 (Anti-bacterial and Anti-fungal Effects of Herbal Oil Made from Vateria acuminata Hyne)

  • 김수지;;홍진영;조창욱;김영희;최정은
    • 보존과학연구
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    • 통권33호
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    • pp.5-17
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    • 2012
  • Ola 잎에 글씨를 새긴 다음 그 홈을 Vateria acuminata Hyne의 뿌리로 만든 식물성 오일과 탄소 가루를 섞어 채운 올라 잎 기록물은 스리랑카에서 사용되는 기록 방법 중의 하나이다. 문헌상에 따르면 올라 잎 기록물은 1세기부터 18세기까지 사용되었다. Ola 잎 기록물이 400여 년 동안 보관되어 왔다는 최근의 발견과 좋은 보존 상태로 보아 이 식물성 오일이 올라 잎을 곰팡이와 곤충 같은 생물학적 요인과 환경 요인으로부터 보호해 주는 것으로 보인다. 이 식물성 오일의 항균 활성을 측정하기 위하여 해인사 장경판전에서 분리한 곰팡이와 올라 잎에서 분리한 균을 배양한 후 억제 효과를 확인하였다. 균 현탁액을 평판배지에 도말한 다음 식물성 오일을 흡수시킨 페이퍼 디스크를 평판배지에 올린다. 이 실험에서 식물성 오일은 육안 상 분명한 투명환을 형성하였으며 곰팡이나 세균과 같은 미생물의 성장을 저해하는 것을 확인하였다. 이 결과로 보아 Vateria acuminata Hyne의 식물성 오일은 항세균 및 항진균 활성을 가지고 있다는 것을 나타낸다.

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Anti-Angiogenic Activities of Gliotoxin and 1ts Methylthio-Derivative, Fungal Metabolites

  • Lee, Hee-Jung;Lee, Jeong-Hyung;Hwang, Bang-Yeon;Kim, Hang-Sub;Lee, Jung-Joon
    • Archives of Pharmacal Research
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    • 제24권5호
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    • pp.397-401
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    • 2001
  • In the search for new naturally occurring angiogenic inhibitory we found that culture broths from two unidentified fungal strains exerted potent inhibitory activities on capillary-like tube formation of human umbilical vein endothelial cells (HUVEC) in vitro. Two active compounds were isolated by bioassay-guided separation and their structures were identified as gliotoxin (1) and its derivative methylthiogliotoxin (2) by spectroscopic analyses. These compounds significantly inhibited the migration of HUVEC assessed by in vitro wounding migration assay and exhibited at least 10 times more potent inhibition of proliferation of HUVECs as compared with that of cancer cell lines such as HeLa, MCF-7, and KB 3-1 cells. Especially, gliotoxin having disulfide group exerted more potent activities than methylthiogliotoxin, suggesting that gliotoxin could be a useful compound for further study as an anti-angiogenic agent.

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Downregulation of fungal cytochrome c peroxidase expression by antifungal quinonemethide triterpenoids

  • Seo, Woo-Duck;Lee, Dong-Yeol;Park, Ki Hun;Kim, Jin-Hyo
    • Journal of Applied Biological Chemistry
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    • 제59권4호
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    • pp.281-284
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    • 2016
  • To handle the development of antifungal drug resistance, the development of new structural modules and new modes of action for antifungals have been highlighted recently. Here, the antifungal activity of quinonemethidal triterpenoids such as celastrol, dihydrocelastrol, iguestein, pristimerin, and tingenone isolated from Tripterygium regelii were identified (MIC $0.269-19.0{\mu}M$). C. glabrata was the most susceptible to quinonemethide among the tested fungi. Furthermore, quinonemethide suppressed cyctochrome c peroxidase expression dramatically, decreasing fungal viability caused by the accumulation of hydrogen peroxide. Thus, cyctochrome c peroxidase downregulation of quinonemethide may be a key mode of action for antifungals.

Supplementation of Essential Oil Extracted from Citrus Peel to Animal Feeds Decreases Microbial Activity and Aflatoxin Contamination without Disrupting In vitro Ruminal Fermentation

  • Nam, I.S.;Garnsworthy, P.C.;Ahn, Jong Ho
    • Asian-Australasian Journal of Animal Sciences
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    • 제19권11호
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    • pp.1617-1622
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    • 2006
  • Long-term storage of feeds or feedstuffs in high temperature and humid conditions can be difficult because of microbial contamination. Essential oil isolated from industrial waste citrus peel could be used as a preservative because it is likely to have anti-bacterial and anti-fungal activity. Our objective was to determine whether different levels (0.028, 0.056 and 0.112 g/kg) of citrus essential oil (CEO) would provide anti-microbial activity and enhance preservation of animal feed without influencing rumen fermentation. At 0.112 g/kg, CEO inhibited growth of Escherichia coli (ATCC 25922) and Salmonela enteritidis (IFO 3313). Growth of E. coli recovered after 24 h of incubation, but S. enteritidis continued to be inhibited for 72 h. Preservation of antibiotic-free diets for swine was assessed by observing anti-aflatoxin activity. Aflatoxin was detected in control feed samples on days 16 (8 ppb) and 21 (8 ppb) and in anti-fungal agent (AA) treated samples on days 16 (2 ppb) and 21 (4 ppb). However, aflatoxin was not detected in feed samples treated with CEO. Treatment with CEO and AA did not influence ruminal pH, dry matter digestibility (DMD) or organic matter digestibility (OMD) over 48 h of incubation in rumen fluid. Acetate and propionate were slightly higher with CEO treatment (p<0.05), but total concentration of volatile fatty acid (VFA) was not significantly affected by treatment. Ammonia-N concentration was slightly higher for the control treatment (p<0.05). This study showed that treating feed with CEO enhances preservation of animal feed without influencing in vitro rumen fermentation.

난연처리 목재의 방미 및 방부성능 (Decay Resistance and Anti-mold Efficacy of Wood Treated with Fire Retardants)

  • 손동원;강미란;이동흡;박상범
    • Journal of the Korean Wood Science and Technology
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    • 제41권6호
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    • pp.559-565
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    • 2013
  • 목재사용량의 증가에 따라 목재의 화재안전성에 대한 요구가 높아지고 있다. 실내 사용 목재의 난연처리에 무기인계를 약제로 사용함으로써 환경에 대한 부담을 줄이면서 난연성능을 향상 시킬 수 있다. 수용성 약제를 가압 주입하여 목재 내 깊숙이 침투시키면 목재의 고유기능을 유지하면서 난연성능을 부여 할 수 있다. 난연제의 용탈을 억제하여 장기간 성능을 유지할 수 있는 장점도 있다. 저자들은 액상규산나트륨을 주약제로 하고, 붕산 및 인계 약제를 보조약제로 하여 목재 내로 약액을 주입하는 공정을 개발하였다. 이들 약제는 난연성능 외에 방부 및 방충성능을 지니는 약제가 포함되어 있어, 난연성능과 함께 목재 사용 시 노출될 수 있는 부후환경에서의 내후성능을 방미효력과 방부효력으로 평가하였다.