• 대한한방내과학회지
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• 제17권1호
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• pp.204-209
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• 1996

Several medicinal Plants in Jeonbuk are screened for the contraction or relaxation to the acetylcholine and histamine induced contraction in the isolated rat and guinea pig's trachea smooth muscle. Contractions evoked by acetylcholine and histamine were inhibited by Flos Farfarae, Poria and Rhizoma alismatis, but contractions were increased Tuber Pinelliae, Herba Chelidonii, Fructus Qusqualis, Radix Asari, Semen Perillae, Folium Artemisiae and Fructus Schizamdrae increased the contractions evoked by acetylcholine and histamine. Radix Puerariae, Radix Osterici Koreani, Rhizoma Zingiberis siccatum, Radix Sanguisorbae, Rhizoma Atractylodis, Fructus gardeniae and Cortex Magnoliae did not effect the contractions evoked by acetylcholine and histamine.

• Journal of Ginseng Research
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• 제35권1호
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• pp.111-123
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• 2011

To investigate the effects of repeated immobilization-stress challenge on the the hypothalamic-pituitary-adrenal axis, the genomic transcriptome in the adrenal cortex of immobilization-stressed mouse was analyzed by using a cDNA microarray. Mice were subjected to immobilization stress for 2 h per day for 5 consecutive d. With a 4.0-fold cutoff of arbitrary criteria, the expression levels of 168 out of 41,174 genes were significantly modulated in the adrenal cortex by stress when comparing the control and experimental groups. These genes were related to apoptosis, cell cycle, immune response, inflammatory responses, and signal transduction, and thus may be used as potential targets for the development of therapeutics for chronic stress or depression. Six significant genes among these were selected for real time polymerase chain reaction analysis to confirm the change of their expression levels. The gene for phospho 1 was also further investigated because its expression showed the greatest fold-change.

• 생약학회지
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• 제3권4호
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• pp.217-225
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• 1972

Mt. Deok-Yu is situated on the border of Chun-Buk and Kyung-Nam Do, Korea. The peak of Dae Deok-yu (1608m) and Nam Deok-Yu (1508m) is the highest of Mt. Deok-yu range and it has many other high peaks. The plant of Mt. Deok-yu were collected from May 1964 to August 1972. The natural and cultivated medicinal plants include 98 families, 213 genera, 305 species, 53 varietes, 3 formas and 360 kinds.

• 생약학회지
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• 제7권1호
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• pp.69-71
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• 1976

New or noteworthy medicinal plants were found in Korea, such as 1. Magnolia sieboldii K. KOCH f. dupliflora $C_{HI}$ (Magnoliaceae) 2. Peucedanum insolens $K_{ITAGAWA}$ (Umbelliferae) 3. Panax japonicus C.A. $M_{EYER}$ (Araliaceae) 4. Phytolacca americana L. (Phytolaccaceae) 5. Polygonum ellipticum $M_{IGO}$ (Polygonaceae).

• 생약학회지
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• 제40권2호
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• pp.83-88
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• 2009

Bone is continuously remodeled by osteoblasts and osteoclasts. Osteoclasts play an important role in bone metabolism by resorbing the bone matrix. Thus, the compounds inhibiting osteoclasts can improve bone diseases such as osteoporosis. The methanol extracts of 159 herbal medicines were screened for the inhibitory activity against differentiation of osteoclasts. Among the tested extracts, Achuranthis Radix and Corydalis Tuber showed relatively strong inhibitory activity against differentiation of osteoclasts, whereas they have no significant effect on proliferation of osteoclasts.

• Archives of Pharmacal Research
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• 제3권2호
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• pp.75-78
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• 1980

Potential antinumor activity of sixteen Korean medicinal plants was tested against leukemia SN 36, murine tomor model. Survival studies by measuring life span indicated that Morus alba (Moraceae), Verbascum phlomoides (Scrophulariaceae), Curcuma longa (Zingbieraceae), Torilis japonica (Umbelliferae), Bupleurum falcatum (Umbelliferae) and Codonopsis pilosula (Campanulaceae) exhibited significant antitumor activity with the dose-schedule employed in the experiment. Methanol (70%) extracts of Platycodon gradiflorum (Campanulaceae), Bupleurum longeradiatum (Umbelliferae) and Asiasarum sieboldii (Aristolochiaceae) showed rather potent toxicity.

• Biomolecules & Therapeutics
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• 제7권2호
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• pp.153-157
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• 1999

The anticancer effect of medicinal plants against two oral carcinoma cells, A253 and SCC-25 were investigated in this study. Methanol extracts from 63 medicinal plants, which have anticancer activities against other cancers such as stomach, hepatocellular or colon carcinomas, were prepared and screened for their anti- oral cancer activity by using MTT assay. Thirty one samples showed anti-oral cancer activity against either cell line used, however, other 32 samples had no anti-oral cancer activity. Among these samples methanol extract of Caesalpinia sappan revealed the strongest anti-oral cancer activity. The $IC_{50}$/ values of this extract against A253 and SCC-25 cells were 16 and 25 $\mu$g/m1, respectively. Fractions of n-hexane, dichloromethane, ethylacetate, n-buthanol and water were prepared from methanol extracts of Caesalpinia sappan, Anthriscus sylvestris, Rhus japonica, Curcuma arowatica, Inula helenium, Sinoarnudinaria reticulata, and Polygonum cuspidatum, respectively. Among these 35 fractions the n-hexane fraction of Inula helenium showed the strongest anti-oral cancer activity, the $IC_{50}$/ value was 1.6$\pm$0.3 $\mu\textrm{g}$/ml. Ten other fractions showed $IC_{50}$/ values lower than 10 $\mu\textrm{g}$/ml.

• Natural Product Sciences
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• 제19권4호
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• pp.329-336
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• 2013

The purpose of this study is to evaluate cytoprotective effect of Korean medicinal plants on alcohol-induced cytotoxicity in liver cells. Out of the 120 plant extracts tested in this study, 53 plant extracts enhanced alcohol-induced cytotoxicity in liver cells by 50~80%, while other 11 plant extracts including Crataegus pinnatifida reduced cytotoxicity by 1~68%. The results of DPPH free radical test and LDL lipid peroxidation test on the plant extracts that sharply reduced cytotoxicity in liver cells shows that Crataegus pinnatifida and Cinnamomum cassia had antioxidative effect. This study reports that the plant extracts that enhance or reduce ethanol-induced cytotoxicity in liver cells can be research objects as cytotoxic plants or cytotoxicity-protective plants.

• 한국약용작물학회지
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• 제17권2호
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• pp.115-120
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• 2009

To obtain the information on antioxidant activity by harvesting parts and time in Cudrania tricuspidata Bureau, total phenolic contents, flavonoid contents, superoxide dismutase (SOD) like activity and 2,2-diphenyl-1-picrylhydrazyl(DPPH) radical scavenging activity of methanol extracts from Cudrania tricuspidata were investigated. Total phenolic contents was the highest in leaf [$30.2{\sim}38.8\;mg/g$ dry weight (DW)] and followed by root bark, stem bark, fruit, root except bark and stem except bark. Among harvesting time, total phenolic contents of leaf was the highest as $38.1{\sim}38.8\;mg/g$ DW in May and June, and then decreased to October. Root bark harvested in April and May contained $26.6{\sim}27.8\;mg/g$ DW total phenolic compounds and total phenolic content fell to a very low values at 1.8 mg/g DW in February. Flavonoid contents was very high in leaf and root bark. Especially, root bark harvested in April had the highest of flavonoid contents as 23.2 mg/g DW. As a result of simple linear regression analysis of total phenolic contents on flavonoid contents according to harvesting parts, it showed a high correlation (p < 0.001) with $0.57{\sim}0.97\;R^2$ (coefficient of determination). As $RC_{50}$ value, that was, the concentration of sample required for 50% reduction of DPPH absorbance, was $13.7{\sim}20.5\;{\mu}g/mL$ in leaf so DPPH radical scavenging activity was very high. But SOD like activity of $1,000\;{\mu}g$ extract/mL MeOH was a low value of $0.3{\sim}9.2%$ in all samples.

• 한국식품저장유통학회지
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• 제19권5호
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• pp.744-750
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• 2012

안전한 천연물을 이용한 천연항산화제 개발 연구에 대한 관심이 고조되는 가운데, 지유, 진피, 천련자, 천문동, 청피, 편축, 하고초 7종의 천연 약용식물 추출물을 통해 항산화 활성을 측정하였다. 추출물의 총 페놀 함량은 지유가 열수추출물과 40% ethanol 추출물에서 각각 31.5 mg/g, 32.7 mg/g으로 가장 높게 나타났다. 추출물의 수용성 물질에 대한 항산화 효과는 DPPH radical 소거능이 지유, 진피, 천련자, 천문동, 청피, 편축, 하고초 7종의 천연 약용식물의 열수 추출물과 ethanol 추출물에서 80% 이상의 높은 소거활성을 나타내었다. ABTS radical cation decolorization을 측정한 결과, 7종의 천연 약용식물의 열수 추출물과 ethanol 추출물에서 85% 이상의 높은 저해율을 나타내어 매우 우수한 항산화 효과를 가지고 있음을 입증하였다. 지용성 물질에 대한 항산화 효과를 측정하기 위해 Antioxidant Protection Factor(PF)를 측정한 결과, 천련자 열수 추출물에서 1.65 PF로 대조구인 vitamin C 보다 높은 수준을 나타내어 지용성 물질에 대한 항산화 활성이 높음을 확인하였다. TBARs 생성 저해율을 측정한 결과 지유, 천련자, 청피, 편축, 하고초의 열수 추출물과 ethanol 추출물에서 99%에 가까운 높은 저해율을 나타내어 대조구인 vitamin C보다 지용성 물질에 대한 항산화 활성이 매우 높은 것으로 확인되었다.