• 제목/요약/키워드: Salicylic Acid

검색결과 369건 처리시간 0.031초

Hyaluronic Acid Increases Anti-Inflammatory Efficacy of Rectal 5-Amino Salicylic Acid Administration in a Murine Colitis Model

  • Jhundoo, Henusha D.;Siefen, Tobias;Liang, Alfred;Schmidt, Christoph;Lokhnauth, John;Moulari, Brice;Beduneau, Arnaud;Pellequer, Yann;Larsen, Crilles Casper;Lamprecht, Alf
    • Biomolecules & Therapeutics
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    • 제29권5호
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    • pp.536-544
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    • 2021
  • 5-amino salicylic acid (5-ASA) is a standard therapy for the treatment of mild to moderate forms of inflammatory bowel diseases (IBD) whereas more severe forms involve the use of steroids and immunosuppressive drugs. Hyaluronic acid (HA) is a naturally occurring non-sulfated glycosaminoglycan that has shown epithelium protective effects in experimental colitis recently. In this study, both 5-ASA (30 mg/kg) and HA (15 mg/kg or 30 mg/kg) were administered rectally and investigated for their potential complementary therapeutic effects in moderate or severe murine colitis models. Intrarectal treatment of moderate and severe colitis with 5-ASA alone or HA alone at a dose of 30 mg/kg led to a significant decrease in clinical activity and histology scores, myeloperoxidase activity (MPO), TNF-α, IL-6 and IL-1β in colitis mice compared to untreated animals. The combination of HA (30 mg/kg) and 5-ASA in severe colitis led to a significant improvement of colitis compared to 5-ASA alone. Combined rectal therapy with HA and 5-ASA could be a treatment alternative for severe cases of IBD as it was the only treatment tested that was not significantly different from the healthy control group. This study further underlines the benefit of searching for yet unexplored drug combinations that show therapeutic potential in IBD without the need of designing completely new drug entities.

Biophysical study of bioactive-substance conformation and interaction with drugs in solution

  • Yu, Byung-Sul;Lee, Bong-Jin;Sohn, Dong-Hwan
    • Archives of Pharmacal Research
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    • 제8권3호
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    • pp.109-117
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    • 1985
  • The interaction of salicylic acid (S. A.), salicylamide (S,M) with nucleic acid base derivatives such as 9-ethyl adenine (A), 1-cyclohexyl uracil (U), 2', 3'-benzylidine-5' trityl-cytidine (C), gaunosine-2', 3', 5'-isobutylate (G) has been spectroscopically investigated to determine the binding mechanism. NMR and IR spectra were measured in nonpolar solvents. The association constant K of the formation of complex was calculated from the IR spectra. Compounds S. A. and A form a 1:1 or 1:2 cyclic hydrogen-bonded complex depending on the sample concentration. Compounds S. A. and U form a 1:1 or 1:2 hydrogen-bonded complex on the sample concentration. Compounds S. A. and C form a 2:1 hydrogen-bonded complex at low concentration (0.0016M). Compound S. A. binds compound G, but its binding does not completely break the self-association of compound G, Compound S. M. binds compounds A. U. C. G. very weakly.

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Biochemistry of Salicylic Acid and its Role in Disease Resistance

  • Lee, Hyung-Il;Raskin, Ilya
    • 식물조직배양학회지
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    • 제24권4호
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    • pp.233-238
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    • 1997
  • Salicylic acid (SA) is involved in the establishment of systemic acquired resistance (SAR) in many plant including tobacco. Considering the important role of SA in disease resistance, biosynthetic and metabolic pathways of SA in tobacco have been studied extensively: The initial step for biosynthetic pathway of SA is conversion of phenylalanine to trans-cinnamic acid, followed by decarboxylation of trans-cinnamic acid to benzoic acid and ie subsequent ring hydroxylation at the C-2 position to form SA. In TMV inoculated tobacco, most of the newly synthesized SA is glucosylated or methylated. Methyl salicylate has been identified as a biologically active, volatile signal. In contrast, the two glucosylated forms accumulate in the vicinity of lesions and consist of SA glucoside, a major metabolite, and SA glucose ester, a relatively minor from. Two enzymes involved in SA biosynthesis and metabolism have been purified and characterized : benzoic acid 2-hydroxylase which catalyzes conversion of benzoic acid to SA; UDP-Glucose: SA 1-O-D glucosyltransferase which converts SA to SA glucose ester. Further studies of the biosynthetic and metabolic pathways of SA will help to elucidate the SAR signal transduction pathway and provide potential tools for the manipulation of disease resistance.

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감국 정식시기와 거리에 따른 생육특성과 성분 분석 (Growth Characteristics and Ingredient Analysis According to the Transplanting Date and Distance of Dendranthema (L.).)

  • 정재한;박노복
    • 현장농수산연구지
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    • 제22권1호
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    • pp.65-77
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    • 2020
  • 시중에서 많이 판매되는 국화차의 대명사인 감국(Dendranthema indicum (L.) DesMoul.)을 산업화하기 위해, 2018년 가을에 자생지에서 감국(Dendranthema indicum (L.) DesMoul.) 종자를 채취하여 냉장 보관 후 종자를 발아시켰다. 어린 묘종은 2, 3, 4월에 노지에 시기별, 간격별에 따른 꽃의 수확량과 잎, 줄기의 성장에 미치는 영향을 살펴보기 위한 실험을 하였다. 감국(Dendranthema indicum (L.) DesMoul.) 꽃을 채취한 후 잎, 줄기를 채취하여 성분을 분석한 결과는 아래와 같다. 1. 국화 묘종을 정식시기별로 심었을 때 꽃은 4월에 정식한 처리구에서 17.1개로 가장 많았다. 꽃의 지름은 2.9cm, 꽃수는 16개, 생체중은 6.5~6.6g, 건체중은 1.1~1.2g이었다. 잎은 3, 4월에 심은 처리구에서 46~47개, 엽장은 5.2~5.3cm, 옆폭은 3.5~3.6cm이었다. 2. 국화 묘종을 정식거리별로 심었을 때 꽃수는 20×20cm 간격으로 심었을 때 16.2개로 가장 작았고, 30~50cm 간격에서는 16.8~17.1개 이었다. 꽃 지름은 2.7~2.8cm, 꽃잎수는 8개, 꽃잎 길이는 0.8cm, 꽃 한 개의 생체중은 6.5~6.6g이었다. 잎수는 30×30cm, 40×40cm에서 47개로 가장 많았고, 엽장은 50×50cm처리구에서는 가장 긴 6.2cm로 나타났지만 그 외 처리구에서는 5.2cm이었다. 3. 국화 잎+줄기의 추출수율은 7.93%였고, 추출 용매색은 50, 60%는 연녹색, 70, 80, 90, 100%는 녹색으로 나타났다. 감국 꽃은 추출수율이 7.58%, 추출 용매색은 50, 60, 70%에서는 연노란색, 80, 90%에서는 노란색, 100%에서는 진노란색이었다. 4. 국화 꽃에 함유된 성분은 gallic acid, 4-hydroxy benzoic acid, methyl gallate, 4-hydroxy-3-methoxy benzoic, caffeic acid, salicylic acid, p-coumaric acid, sinapic acid, naringin, 4-melthoxyben, flavone 등 11가지 성분을 확인하였다. 함량은 29.200~36.900ppm이었다. 5. 국화 잎+줄기에 함유된 성분은 salicylic acid가 6,129.526ppm으로 나타났고, 다음으로 4-methoxyben 1,966.714ppm이었다. 함유량이 10ppm 이하로 나타난 것은 methyl gallate 8.197ppm, 4-hydroxy-3-methoxy benzoic 6.994ppm, caffeic acid 5.566 ppm, flavone 4.522ppm, p-coumaric acid 3.787 ppm, gallic acid 1.893ppm이었다.

해바라기(Helianthus annuus L.) 근분비물질(根分泌物質)의 타감작용(他感作用) 및 타감물질(他感物質)의 동정(同定) II. 타감성(他感性) 해바라기 근분비물질(根分泌物質)의 동정(同定) (Allelopathic Activity and Determination of Allelochemicals from Sunflower (Helianthus annuus L.) Root Exudates II. Elucidation of Allelochemicals from Sunflower Root Exudates)

  • 박광호;;김순철;김길웅
    • 한국잡초학회지
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    • 제12권2호
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    • pp.173-182
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    • 1992
  • 해바라기의 상대억제작용(相對抑制作用)(타감작용(他感作用), Allelopathy) 및 천연제초제(天然除草劑)로서의 개발가능성(開發可能性)에 관한 시험(試驗)을 1988-1991년(年)에 걸쳐 국제미작연구소(國際米作硏究所) 농학(農學), 생화학부(生化學部) 및 국립(國立)필리핀 대학교(大學校) 화학과(化學科) 천연물(天然物) 연구실(硏究室)에서 수행(遂行)하여 얻은 결과중(結果中) 상대억제작용성(相對抑制作用性) 해바라기 근분비물질(根分泌物質)의 생물검정(生物檢定) 및 상대억제작용물질(相對抑制作用物質)(Allelochemicals)의 HPLC 분석결과(分析結果)는 다음과 같다. 1. 해바라기 근분비물질(根分泌物質)의 산(酸) 및 중성분획물질(中性分劃物質)을 생물검정재료(生物檢定材料)로 사용한 피 (Echinochloa colona (L.) Link 및 무 (Raphanus sativus L.)의 발아(發芽)가 유의성(有意性)있는 억제(抑制)를 보인 반면 알칼리 및 수용성분획(水溶性分劃)에서는 억제작용(抑制作用)이 나타나지 않았다. 2. 피의 경우 해 바라기 근분비물질(根分泌物質)의 분획물질(分劃物質) $10{\mu}l$ 농도(濃度)에서부터 유의적(有意的)인 생장억제(生長抑制)가 인정(認定)되었으며 지상부(地上部) 신장억제(伸張抑制)보다 지하부(地下部) 신장억제(伸張抑制)가 산(酸) 및 중성분획(中性分劃)에서 더 강하게 나타났다. 3 무의 경우 농도(濃度)에 관계없이 지상(地上) 및 지하부(地下部) 신장억제(伸張抑制)가 산(酸) 및 중성분획(中性分劃)에서 각각 높게 나타났다. 4. 생물검정(生物檢定)에서 강한 상대억제작용(相對抑制作用)을 보인 산성분획물질(酸性分劃物質)의 HPLC분석결과(分析結果) hydroquinone, ${\beta}$-resorcyclic acid, vanillic acid, caffeic acid, salicylic acid, quercetin 등의 물질(物質)이 확인(確認)되었다. 한편, 중성분획물질(中性分劃物質)에서는 Hydroquinone, gentisic acid, ${\beta}$-resorcyclic acid, vanillic acid, caffeic acid, ferulic acid, quercetin 등이 각각 동정(同定)되었다.

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솔잎혹파리에 대한 소나무류(類) 침엽내(針葉內)의 저항성인자(抵抗性因子) 조사(調査) (Potential Resistance Factors in Pine Needles to Pine Gall Midge)

  • 손두식;엄태진;서재덕;이상록
    • 한국산림과학회지
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    • 제85권2호
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    • pp.244-250
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    • 1996
  • 솔잎혹파리의 저항성인자(抵抗性因子)를 소나무, 해송, 버지니아소나무 및 해송${\times}$버지니아소나무에 대하여 조사(調査)하였다. 성충(成蟲)이 산란(産卵)을 위해 수종(樹種)의 선호성(選好性)과 침엽(針葉)에서 추출(抽出)된 방향물질(芳香物質)인 terpenoid와 phenolic compound에 대한 유충(幼蟲)의 생물학적(生物學的) 검정(檢定)을 실시(實施)하였다. 솔잎혹파리의 성충(成蟲)은 산란(産卵)을 위해서 수종(樹種)에 관계없이 전수종(全樹種)에 비산(飛散)하여 산란(産卵)을 하였으나 충영 형성율(形成率)은 버지니아소나무에는 0%, 해송${\times}$버지니아소나무는 9%, 소나무와 해송은 각각(各各) 25.6%, 22.2%이었다. 그러므로 솔잎혹파리는 버지니아소나무에는 산란(産卵)을 하나 유충(幼蟲)이 자라지 못하고 폐사(斃死)함으로 침엽내(針葉內)에는 솔잎혹파리에 대한 저항성물질(抵抗性物質)이 있는 것으로 추측(推測)되며 소나무류(類)에서 휘발(揮發)되는 terpenoid는 솔잎혹파리의 성충(成蟲)을 유인(誘引) 혹은 기피성물질(忌避性物質)이 아니었으며 또한 신초(新梢)에서 휘발생(揮發生)되는 terpenoids 및 송지(松脂)는 솔잎혹파리 유충(幼蟲)의 폐사(斃死)에 영향을 주지 않는 것으로 나타나고 있다. 솔잎혹파리의(幼蟲)을 사육(飼育)한 결과(結果)는 버지니아소나무 침엽(針葉)에서 추출(抽出)한 phenolic compounds, salicylic acid와 chitinase의 용액(溶液)위에서는 유충(幼蟲)의 폐사율(斃死率)이 각각(各各) 89%, 92%, 86%이나 소나무에서 추출(抽出)한 phenolic compounds와 gallic acid에서는 56%, 57%이었다. 그러므로 버지니아소나무의 침엽내(針葉內)에는 솔잎혹파리에 대한 저항성물질(抵抗性物質)이 함유(含有)되어 있는 것으로 생각되며 salicylic acid와 chitinase는 솔잎혹파리에 대한 저항성물질(抵抗性物質)로 추측된다.

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소염제로서의 살리씰산유도체의 구조-활성 상관관계에 관한 양자화학적 해석 (Quantum Chemical Analysis of Structure-Activity Relationships in Salicylic Acids as Anti-inflammatory Drugs)

  • 이종달;구본기
    • 약학회지
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    • 제33권2호
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    • pp.87-100
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    • 1989
  • Salicylic acids as anti-inflammatory agents were analyzed by ab initio, quantum chemical methods to study the possible modes of binding to the receptor. As the result of multiple regression analysis of reactivity indices and interpretation of normalized frontier orbital charges of drugs, potency seems to be related to energy of HOMO and LUMO at the 5 position of benzene ring, and in the 5-phenyl substituted case, the para position of substituting ring is important. The binding occurs first at the positive site of its receptor. The charge density exhibited by the frontier orbitals suggests that charge moves from receptor site to carboxyl group. The electrostatic orientation effect makes an important contribution to the binding of the active molecules to their receptors. Also the electrostatic potential model may be able to rationalize the source of activity or inactivity of the drugs under investigation.

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A Two-Strain Mixture of Rhizobacteria Elicits Induction of Systemic Resistance Against Pseudomonas syringae and Cucumber Mosaic Virus Coupled to Promotion of Plant Growth on Arabidopsis thaliana

  • Ryu Choong-Min;Murphy John F.;Reddy M.S.;Kloepper Joseph W.
    • Journal of Microbiology and Biotechnology
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    • 제17권2호
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    • pp.280-286
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    • 2007
  • We evaluated a commercial biopreparation of plant growth-promoting rhizobacteria (PGPR) strains Bacillus subtilis GB03 and B. amyloliquefaciens IN937a formulated with the carrier chitosan (Bio Yield) for its capacity to elicit growth promotion and induced systemic resistance against infection by Cucumber Mosaic Virus (CMV) and Pseudomonas syringae pv. tomato DC3000 in Arabidopsis thaliana. The biopreparation promoted plant growth of Arabidopsis hormonal mutants, which included auxin, gibberellic acid, ethylene, jasmonate, salicylic acid, and brassinosteroid insensitive lines as well as each wild-type. The biopreparation protected plants against CMV based on disease severity in wild-type plants. However, virus titre was not lower in control plants and those treated with biopreparation, suggesting that the biopreparation induced tolerance rather than resistance against CMV. Interestingly, the biopreparation induced resistance against CMV in NahG plants, as evidenced by both reduced disease severity and virus titer. The biopreparation also elicited induced resistance against P. syringae pv. tomato in the wild-type but not in NahG transgenic plants, which degrade endogenous salicylic acid, indicating the involvement of salicylic acid signaling. Our results indicate that some PGPR strains can elicit plant growth promotion by mechanisms that are different from known hormonal signaling pathways. In addition, the mechanism for elicitation of induced resistance by PGPR may be pathogen-dependent. Collectively, the two-Bacilli strain mixture can be utilized as a biological inoculant for both protection of plant against bacterial and viral pathogens and enhancement of plant growth.