• Title/Summary/Keyword: Ginkgo

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The Pharmacological Study on Ginkgoic Acid, a Component of Ginkgo Biloba L. Fruit (은행성분(銀杏成分) Ginkgoic Acid의 약리학적(藥理學的) 연구(硏究))

  • Han, Dae-Sup
    • The Korean Journal of Pharmacology
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    • v.8 no.1
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    • pp.27-30
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    • 1972
  • The effect of the Ginkgoic acid on the amounts of total cholesterol and triglycerides in serum from rabbit was observed. Ginkgoic acid was obtained from Ginkgo biloba L. fruits, and it was subcutaneously administered to the three days fasted rabbits. After three days starvation, the amounts of total cholesteral and triglycerides in serum of the rabbit were markedly increased. The increased amounts of total cholesteral and triglycerides were gradually decreased by administration of Ginkgoic acid, and were returned to the control levels after 4 days. According to the above results, it would be concluded that Ginkgoic acid influences for the recovery of the increased amounts of total cholesterol and triglycerides by abnormal metabolism to normal on rabbit.

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Anatomical Studies on the Differentiation of Reaction Tissues in Ginkgo biloba L. Seedling (은행나무 유식물에 있어서 반응조직의 분화에 대한 해부학적 연구)

  • 강경덕
    • Journal of Plant Biology
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    • v.33 no.4
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    • pp.285-292
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    • 1990
  • In order to elucidate the formation of reaction tissues during the transition from primary to secondary growth, the developmental anatomy was conducted in the first internode of Ginkgo biloba seedling in horizontal position. The righting of the horizontal first internode took place at the middle portion and gradually proceeded to the base during the primary growth. Reaction tissues were formed corresponding to the righting movement in the horizontal first internode. During the transition from primary to secondary growth, compression wood was gradually developed on the lower side only. The anatomical features of compression wood also extended longitudinally to the lower side of the vertical portion where it coincided with the lower side of the horizontal first internode occurs acropetally from basal to apical portion. Eventually, some of the anatomical features of compression wood occurred at the primary growth. And the typical compression wood is gradually established during the secondary growth. On the other hand, the lower side tracheid and ray were longer and higher than those of the upper side in the horizontal first internode. However, difference in the width of ray was not observed between the lower and upper sides.

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Anti-platelet Aggregation Effect of Ginkgolide B and Ginkgoflavonoids, Extracted from Ginkgo biloba, in Vitro, ex Vivo and in Clinic. (Ginkgolide B 및 ginkgoflavonoids의 in vitro와 ex vivo 및 임상에서의 항혈전 작용)

  • 권광일;이영신
    • YAKHAK HOEJI
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    • v.39 no.3
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    • pp.337-345
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    • 1995
  • The effects of ginkgolides(natural mixture of ginkgolides, ginkgolide B, ginkgolide C) and flavonoids(quercetin, kaempferol, myricetin), extracted from Ginkgo biloba, on ADP and PAF-induced platelet aggregation in vitro and ex vivo were investigated. In these experiments, both of ginkgolides and ginkgoflavonoids did not affect the ADP(5 $\mu{M}$) induced platelet aggregation in vitro. The IC$_{50}$ value on PAF (0.3 $\mu{M}$) induced platelet aggregation were 2.52 $\mu{M}$ (ginkgolide B) and 6.35 $\mu{M}$ (natural mixture of ginkgolides) and 2.80 $\mu{M}$ (mixture of ginkgolide B and quercetin). Oral administration of ginkgolide B (1 and 3 mg/kg) and quercetin (3 and 9 mg/kg) to rabbits inhibited ex vivo PAF induced platelet aggregation in a dose-dependent manner. Ginkomin-F tablets administered to the diabetic patients showed inhibitory activities on the ADP and PAF induced platelet aggregation in a dose and time dependent manner.

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Study on formal analysis of carving boards in 'Haejuban' (해주반 판각의 조형분석에 관한 연구)

  • Lee, Yoo-Jin;Lim, Seung-Taeg
    • Journal of the Korea Furniture Society
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    • v.20 no.5
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    • pp.414-430
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    • 2009
  • This paper is designed for the purpose of suggesting Figurative data applicable to modern furniture designs through doing research on Haejuban's engraving that includes excellent Figurative beauty among Korean traditional lighted-floor type furnitures. As a result of the analysis, Haejuban's(Traditional Korean dining table) engraving pattern type was mainly divided into independent patterns and combined patterns. The patterns expressed the most among them are peony patterns. The patterns expressed by the engraving mostly showed the Figurative characteristics of symmetry. The patterns shown in Haejuban's engraving wish or stand for richness, long life, lucky, fidelity, divinity, happiness, success and so on. The species of trees used for Haejuban were a total of 8 kinds such as ginkgo trees, zelkova trees, walnut trees, wild-walnut trees, chinaberry trees and other scrub trees. Ginkgo trees were used the most among them.

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Islation of Long-Chain Phenols from Ginkgo biloba L. and Their Bio-Activer Principles (은행나무 고분자(高分子) 페놀성(性) 화합물(化合物)의 단리(單離) 및 생리활성(生理活性) 원칙(原則))

  • Kim, Young-Kyoon
    • Journal of the Korean Wood Science and Technology
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    • v.21 no.3
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    • pp.82-86
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    • 1993
  • 은행나무 추출물의 생리활성에 대한 실험결과, 그 추출물이 GAG release에 의한 IL-1의 억제효과(87%)를 나타냄을 관찰하였다. 그 추출물을 chromatography로 분리한후 분광학적 분석을 이용하여 그 함유물질들이 anarchardic acid 및 그와 유사한 페놀성 물질임을 밝혔다. 각 성분에 대하여 활성효과를 다시 실험한 결과, 주성분인 IIIb와 IIIc는 활성효과를 보이지 않았으며, 단지, 소량물질인 Va와 Vb만이 중간 정도의 효과(각각 43과 55%)를 나타내었다. 이 결과에 의하면, 은행나무의 추출성분이 IL-1의 억제효과를 분명히 나타내나, 그 효과가 주성분에 기인하는 것이 아님을 보여 주었다.

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Suppressive effects of Th2 cytokines expression and the signal transduction mechanism in MC/9 mast cells by flavonol derived from Ginkgo biloba leaves (비만세포에서 은행잎 플라보놀에 의한 Th2 Cytokine 발현 및 신호전달 억제 기전 효과)

  • Kwon, Hae-Young;Chung, Kyu-Jin;Cheong, Kwang-Jo
    • Journal of Digital Convergence
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    • v.13 no.8
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    • pp.503-514
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    • 2015
  • The effects of Flavonol contents from Ginkgo biloba leaf on anti-atopy activity have not rarely been verified. This study is to investigate the effects of flavonol on Th2 cytokine production in MC/9 mast cells. For this, flavonol was analyzed by ELISA and Real-time PCR. Analysis results showed that flavonol significantly suppressed production of Th2 cytokines(IL-13, MIP-1a) in a dose dependent manner. The mRNA expression of IL-4, IL-5, IL-13, TNF-a were effectively restrained by Flavonol at the concentration 25,50,$100{\mu}g/m{\ell}$. And decrease of expression of NFAT-1, c-jun protein was confirmed by western blot analysis. These results indicate that flavonol has effects of decreasing the Th2 cytokine production in the MC/9 mast cell causing inhibition of transcription factors such as NFAT-1, c-jun. Thus, we would like to brief that flavonol may have the applicability as therapeutic agent for atopic dermatitis.

Effect and Development Strategies of a Village Development Project Using It's Traditional Specific Items in Hwaseong City (화성시 농촌전통테마마을 운영성과와 발전 방안)

  • Suh, Gyu-Sun
    • Journal of Agricultural Extension & Community Development
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    • v.13 no.1
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    • pp.49-67
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    • 2006
  • The purpose of this study was to suggest development strategies of a village of Hwaseong-si where several programs using it's traditional items have been operated since 2003 according to the policy of Rural Traditional Thema Village Development implemented by Rural Development Administration(RDA). The village is located in Yodang-ri, Yanggam-myun, hwaseong-si in Gyounggi province. The village is called as 'Eunheng Namu Maeul' which means 'ginkgo tree village' since the tree is almost 350 years old and beautifully huge. Including this big tree there are much more traditional items such as organic dairy farming, hand-made cheese, legends and traditional plays. Using this items and government subsidies, the village has managed various tour programs and other income increasing projects. This study analyzed the strengths, weaknesses, opportunities and threats of the current situation of the village with the related materials and data to find out development strategies for the village-based programs and projects. This study recommended the followings as a major result of this study. The huge ginkgo tree at the village could be a better traditional attractive item when paths and wood of ginkgo trees will be built up especially utilizing the original huge one around the village. Like this, the item of hand made cheese could be a much more valuable traditional item when there will be an advanced facility for the people's working together. The social actives of the village have been weakened because of few young dwellers living there, therefore there needs a special subsidizing project for the village to hire a young manager having some social skills and knowledges. The situation being urbanized in front of the village needs precisely checking and implementing the Hwaseong-si's urbanization policy so that the urbanization could be harmonized with the maintenance and development of the traditional items of the village.

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