• 제목/요약/키워드: Anti-bacterial study

검색결과 453건 처리시간 0.031초

數種 韓藥材의 齒牙美白 效果에 관한 實驗的 硏究 (Study on the effects of herbal extracts on tooth whitening, antioxidant, nitric oxide synthesis and Streptoccocus mutans.)

  • 정현아;;임석인
    • 한방안이비인후피부과학회지
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    • 제15권2호
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    • pp.1-19
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    • 2002
  • Fifteen herbs used in oral medicine were extracted in ethanol and screened for tooth whitening effect, radical scavenging activity, inhibition of inducible nitric oxide synthase activity and anti-bacterial activity on Streptoccocus mutans. The results are as followed: 1. The tooth whitening effect of toothpaste containing 1 $\%$ ethanol extracts of 15 herbs was tested in brushing method using artificially stained HAT tablet and bovine tooth specimens. Toothpaste containing 1$\%$ of Vucia unijuga, Illicium verum, Angelica dahurica and Piper longum extracts showed tooth whitening effects on both HAT tablet and bovine tooth specimens. But the others did not show a considerable activity. 2. The antioxidant activity of ethanol extracts of 15 herbs was tested using the method of 1,1-diphenyl-2-picryl hydrazyl (DPPH) reactivity. Two ethanol extracts of Cimicifuga heracleifolia and Phyllostachys nigra var. henonis were found to be the most effective on radical scavenging activity. C. heracleifolia and P. nigra var. henonis extracts removed 86$\%$ and 81 $\%$ of DPPH radical at 0.01$\%$, compared with butylated hydroxy toluene as positive control. 3. The inhibition activity of ethanol extracts on nitrate production In RAW264.7 cell stimulated by lipopolysacchride was tested using the Griess reagent. But all extracts did not inhibit nitrate production. 4. The antibacterial activity on Streptoccocus mutans was tested by paper disk method. But no one extract showed any anti - bacterial activity.

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마치현 에탄올 추출물의 항균, 항산화 효과 (Anti-microbial, Anti-oxidant Effect of Portulacae Herba ethanol Extract)

  • 곽정심;김춘득
    • 한국응용과학기술학회지
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    • 제35권3호
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    • pp.975-984
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    • 2018
  • 마치현 추출물에 대한 생리활성 소재로서 응용 가능성을 확인하고자 하였다. 마치현 추출물의 측정 결과, 플라보노이드, 폴리페놀 함량과 DPPH radical 소거능을 확인하였으며, 세포실험 결과 HaCaT, RAW 264.7, RBL-2H3 세포에서 유의한 세포독성은 나타나지 않았으며. $H_2O_2$에 의한 유발되는 산화적 스트레스에 대한 HaCaT 세포는 마치현 에탄올 $100{\mu}g/mL$ 농도에서 83% 보호효과가 확인되었다. RAW 264.7 세포에 대한 마치현 추출물의 항염 효과를 확인 결과 저농도에서도 nitric oxide 생성이 억제되었으며, S. aureus, S. epidermidis, P. acnes 균에서도 마치현 추출물의 농도 의존적으로 항균 활성이 확인되었다. 본 연구는 마치현 추출물의 항산화, 항염증 및 항균 효과를 가지는 생리 활성 물질로서 활용 가능성을 확인하였다.

In vivo anti-metastatic action of Ginseng Saponins is based on their intestinal bacterial metabolites after oral administration

  • Saiki, Ikuo
    • Journal of Ginseng Research
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    • 제31권1호
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    • pp.1-13
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    • 2007
  • We found that the main bacterial metabolite M1 is an active component of orally administered protopanxadiol-type ginsenosides, and that the anti-metastatic effect by oral administration of ginsenosides may be primarily mediated through the inhibition of tumor invasion, migration and growth of tumor cells by their metabolite M1. Pharmacokinetic study after oral administration of ginsenoside Rb1 revealed that M1 was detected in serum for 24 h by HPLC analysis but Rb1 was not detected. M1, with anti-metastatic property, inhibited the proliferation of murine and human tumor cells in a time- and concentration-dependent manner in vitro, and also induced apoptotic cell death (the ladder fragmentation of the extracted DNA). The induction of apoptosis by M1 involved the up-regulation of the cyclin-dependent kinase(CDK) inhibitor $p27^{Kip1}$ as well as the down-regulation of a proto-oncogene product c-Myc and cyclin D1 in a time-dependent manner. Thus, M1 might cause the cell-cycle arrest (G1 phase arrest) in honor cells through the up/down-regulation of these cell-growth related molecules, and consequently induce apoptosis. The nucleosomal distribution of fluorescence-labeled M1 suggests that the modification of these molecules is induced by transcriptional regulation. Tumor-induced angiogenesis (neovascularization) is one of the most important events concerning tumor growth and metastasis. Neovascularization toward and into tumor is a crucial step for the delivery of nutrition and oxygen to tumors, and also functions as the metastatic pathway to distant organs. M1 inhibited the tube-like formation of hepatic sinusoidal endothelial (HSE) cells induced by the conditioned medium of colon 26-L5 cells in a concentration-dependent manner. However, M1 at the concentrations used in this study did not affect the growth of HSE cells in vitro.

어류의 병원성 세균에 대한 curcumin의 항균효과 (Antimicrobial effects of curcumin against pathogenic bacteria in fish)

  • 허강준;강진휘;신기욱
    • 한국동물위생학회지
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    • 제36권4호
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    • pp.297-301
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    • 2013
  • The present study was to investigate anti-microbial effects of curcumin on major bacterial pathogens for farmed fish, such as Aeromonas hydrophila, A. salmonicida subsp. masoucida, A. salmonicida subsp. salmonicida, Edwardsiella tarda, Vibrio vulnificus, V. paraheamolyticus using disk diffusion, minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) tests. In disc diffusion test, curcumin exhibited concentration-dependent antimicrobial activities to all bacteria pathogens used in the study. Antimicrobial effects of curcumin was found differently depending on bacterial species when determined by MIC or MBC tests. For examples, E. tarda and A. hydrophila was respectively the most sensitive bacterium for bacteriostatic and bacteriocidal effect of curcumin. Collectively, curcumin could be a potential natural drug for controlling pathogenic bacteria in the aquaculture industry.

인동소염방(忍冬消炎方)이 만성 비세균성 전립선염 Rat 모델에서 혈액 및 세포조직의 변화에 미치는 영향 (The Effects of IDS(Indongsoyeom-bang) Treatment on the Hematological and Cytopathological Alterations in Non-Bacterial Prostatitis Rat Model)

  • 이종빈;황석연;조충식
    • 혜화의학회지
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    • 제20권1호
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    • pp.91-104
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    • 2011
  • Background : Although chronic non-bacterial prostatitis is increasing, it is hard to treat effectively. In western medicine, antimicrobials drug, ${\alpha}$-adreno-ceptor antagonists, anti-inflammatory drugs, tricyclic antidepressants and anticholinergic agents are used commonly, but chronic prostatitis/chronic pelvic pain syndromes is confusing and frustrating for urologist. IDS(Indongsoyeom-bang) is used in treatment of chronic prostatitis/chronic pelvic pain syndromes. And it is reported that GLS(Gleditsiae spina) and TOF(Toosendan fructus) components of IDS have significant effect on protection of the glandular epithelial cells. Objective : In this study was conducted to investigate the therapeutic effects and action machanism of IDS in the rat model of non-bacterial prostatitis induced by castration and testosterone treatment. Methods : We observed six experimental objects of normal group, control group, testosterone group, and IDS 50 mg/kg, 200mg/kg, 400mg/kg group. Rats were treated with 17 ${\beta}$-estradiol after castration for induction of experimental non-bacterial prostatitis, which is similar to human chronic prostatitis in histophatological profiles. IDS and testosterone were administered as an experimental specimen and a positive control, respectively. The prostates were evaluated by histological parameters including the epithelial score and epithelio-stromal ratio for glandular damage. Also, the prostates were observed by Hematological alterations of WBC, RBC, hemoglobin and platelet. Results : While prostates of control rats revealed severe acinar gland atrophy and stromal proliferation, the rats treated with IDS-50 showed a diminished range of the tissue damage. Epithelial score was improved in IDS than that of the control. The epithelio-stromal ratio was lower in IDS when compared to that of the control. Also, the examination of bloods were not observed hematological change. Conclusion : These finding suggests that IDS may protects the glandular epithelial cells. We concluded that IDS could be a useful remedy agent for treating chronic non-bacterial prostatitis.

손바닥선인장 줄기 가수분해 분획물 (MBT-01108)의 넙치 세균성질병 예방효과 (The preventive effects of hydrolysis compound of cactus opuntia genus, Opuntia ficus-indica var. saboten Makino against bacterial disease on cultured flounder, Paralichthys olivaceus)

  • 지보영;이남실;김주완;박미선;정승희
    • 한국어병학회지
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    • 제20권2호
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    • pp.179-187
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    • 2007
  • 손바닥선인장 가수분해 추출물을 양식어류의 사료에 첨가 투여하였을 때 어류의 체내 생리활성변화 유도 또는 세균성질병에 대한 예방효과를 가져오는지를 검토하였다. 체중, HSI, Ht수치, 혈장성분분석, 조직학적 검사에서 대조구와 첨가사료 투여구 사이에서 유의한 차이는 인정되지 않았으나, 면역활성 조사에서 첨가사료 투여구의 4주째 CL수치가 대조구와 비교하여 유의성을 나타내었다. 그러나 라이소자임 활성에는 변화가 없었다. 어병세균으로 대표적인 E. tarda와 S. iniae에 대한 공격실험에서도 4주째 첨가사료를 먹인 처리구가 대조구와의 상대생존율에서 각각 82.0%와 13.5% 수치를 나타내었다

죽엽이 생쥐의 복강암에 미치는 영향 (Effects of Phyllostachyos Folium (PF) on solid tumor in mice)

  • 송진수;박수연;최정화;김종한
    • 한방안이비인후피부과학회지
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    • 제22권2호
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    • pp.39-49
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    • 2009
  • Objective : Phyllostachyos Folium (PF) has been used to treat patients with febrile disease consuming the body fluids marked by fever with restlessness, thirst etc. In the theory of herbology, PF can clear away heat and promote the production of the body fluids, relieve restlessness. Recently PF is known to have anti-bacterial, anti-oxidantic effects. Methods : The present study was carried out to investigate the effects of PF on solid tumor in mice in terms of immune-potentiating and direct cytotoxic action of PF in vitro and vivo study. The present author investigated thymocyte and splenocyte proliferation to confirm immune-potentiating activity of PF and also investigated tumor/body weight ratio and survival rates in tumor bearing mice. Result : In this study, administration of PF decreased tumor/body weight ratio significantly, and prolonged survival duration compared to non-treated control. In addition, treatment with PF suppressed proliferation rate of Sarcoma 180 (S-180) cells significantly, and elevated proliferation rates of thymocytes isolated from normal mice. These results were co-related with in vivo study. Conclusion : In conclusion, these results suggest that PF is useful to treat patient with solid tumor, because PF has direct toxic action for tumor cell and immune -potentiating action for T cells. Further study will need to elucidate exact mechanisms related in anti-cancer action of PF.

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Various Biological Activities of Ramie (Boehmeria nivea)

  • Lee, Ah Young;Wang, Xiaoning;Lee, Dong Gu;Kim, Young-Mi;Jung, Yong-Su;Kim, Ho Bang;Kim, Hyun Young;Cho, Eun Ju;Lee, Sanghyun
    • Journal of Applied Biological Chemistry
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    • 제57권3호
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    • pp.279-286
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    • 2014
  • The purpose of this study was to evaluate the biological activities of extracts of ramie (Boehmeria nivea (L.) Gaud.), hereafter referred to as Bn. Bn extracts from various collecting area were extracted with methanol. Two extracts from our study, Bn-13 and -82, showed significant antioxidant properties, likely due to their ability to scavenge free radicals. In addition, Bn extracts showed stronger anti-bacterial activity against Escherichia coli (Bn-40), Stapylococcus aureus (Bn-33), and Helicobacter pylori (Bn-05). In addition, this study was conducted to evaluate the anti-inflammatory effects of Bn extracts in lipopolyssacharide (LPS)- and interferon-${\gamma}$ (IFN-${\gamma}$)-stimulated RAW 264.7 macrophages cells. Bn-37 significantly inhibited the production LPS/IFN-${\gamma}$-induced nitric oxide. The most noteworthy anti-cancer effect was found in Bn-23. Bn-08 showed inhibition of aldose reductase. This study provides basic information for the development of functional foods.

코로나19 등 대응을 위한 "유리창 부착용 항바이러스 동필름" 성능분석 사례연구 (A Case Study on Performance Analysis of Antimicrobial Copper Film Attaching to Window for Responding to COVID-19 and Others)

  • 김성제
    • 한국방재안전학회논문집
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    • 제14권1호
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    • pp.23-40
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    • 2021
  • 세계적인 코로나19 대유행의 시대에, 현재 치료제·백신이 개발, 시판 중인 단계에서 병원내 교차감염의 위험성이 있는 상황이므로, 개인적으로는 후천적인 면역력을 제고하고 사회환경적으로 구리이온의 성능에 의한 생활방역체제를 일반화해야 한다. 감염확산방지를 위해 동서고금의 연구개발사례를 근거로 항균동 필름의 필요성 및 항바이러스 성능실험을 통해 효능성을 분석했다. 한국건설생활환경시험연구원(KCL)에서 항균성능인증 및 "국가승인 성능인증기관"에서 항바이러스 시험성적 인증을 받게 되었다. 당시 질병관리본부의 허가를 받은 실험재료인 NCCP 43326 Human corona virus(BetaCoV/Korea/KCDC03/2020)을 분양받아 생물안전기준에 맞게 생체외 실험실에서 In Vitro시험 결과, 항바이러스 성능시험에서 감염된 세포의 활성제거율이 만족할만한 결과를 도출하고 성능을 인증받게 되었다. 항후 코로나19 바이러스 확산방지대책으로 항바이러스 동필름이 시공된 유리창 공간내에서의 실험군과 항균동필름이 없는 동일조건의 대조군을 비교하는 질(質)적인 임상실험연구가 추가 필요하다.

점안용 우황약침액의 안전성 및 유효성 평가 (The Experimental Study of Safety and Efficacy in Using Bovis Calculus Pharmacopuncture Solution as Eye Drop)

  • 서형식
    • 대한약침학회지
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    • 제12권3호
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    • pp.61-72
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    • 2009
  • Objectives : This experimental study was performed to investigate the safety and efficacy of Bovis Calculus pharmacopuncture solution manufactured with freezing dryness method to use eye drop. To identify the use of it as eye drop, the eye irritation test of rabbits and the antibacterial test of Staphylococcus aureus, Staphylococcus epidermidis, Pseudomonas aeruginosa, Aspergillus niger, Fusarium oxysporum, and Candida albicans were performed. Methods : 1. The eye irritation test of this material was performed according to the Regulation of Korea Food & Drug Administration(2005. 10. 21, KFDA 2005-60). After Bovis Calculus pharmacopuncture solution was administered in the left eye of the rabbits, eye irritation of the cornea, iris and conjunctiva was observed at 1, 2, 3, 4 & 7day. 2. After administering Bovis Calculus pharmacopuncture solution on bacterial species(Staphylococcus aureus, Staphylococcus epidermidis, Pseudomonas aeruginosa, Aspergillus niger, Fusarium oxysporum, Candida albicans) which cause Keratitis, MIC(Minimum Inhibition Concentration) and the size of inhibition zone were measured. Anti-bacterial potency was also measured using the size of inhibition zone. Results : 1. After Bovis Calculus pharmacopuncture solution was administered in the left eye of the rabbits, it was found that none of nine rabbits have abnormal signs and weight changes. 2. After Bovis Calculus pharmacopuncture solution was medicated in the left eye of the rabbits, no eye irritation of the cornea, iris and conjunctiva was observed at 1, 2, 3, 4 & 7day. 3. There was no response to MIC on bacterial species(Staphylococcus aureus, Staphylococcus epidermidis, Pseudomonas aeruginosa, Aspergillus niger, Fusarium oxysporum, Candida albicans) after Bovis Calculus pharmacopuncture solution was medicated. Conclusions : The present study suggests that Bovis Calculus pharmacopuncture solution is a nontoxic and non-irritant medicine, which does not cause eye irritation in rabbits, but dosen't have antibacterial effects on bacterial species(Staphylococcus aureus, Staphylococcus epidermidis, Pseudomonas aeruginosa, Aspergillus niger, Fusarium oxysporum, Candida albicans) which cause Keratitis. These study result recommends that more research on other herbal medicines of eye drop for Keratitis are required.