• Plant Resources
• /
• 제3권1호
• /
• pp.93-97
• /
• 2000

As indicated by Chinese letters “沙赫” (sha-ji) is the ripe fruit of Seabuckthron(Hippophae rhamnoides Linneus) family Flaeagnaceae is one of ancient natural medicine used by the Tibetan and Mongolian nationallites with ancient methods to treat desease. It is an effectiv Traditional Tibetan medicine. Bud only now are they beginning to be understood in the world of modern medicine. Hippophae was written in the book of Traditional Tibetan Medicine - “Somalaza” (8th century), “Sibuyidian” (1840) and “Jingzhubencao” (Qing Dynasty). The “Sibuyidien” was trnslated in to the Russian and published at 1903 in the Russian. Then the Russian bigan to study on Hippophae and they have achieved great successes. The Chinese scientists began to study on the chemical constituent and medical action with modern technique at 1952. With more than 40 years painstaking eport they have conceived and used a wide variety of experimental screening systems, achieved successes. Finally they with one's own tests has keen verified that the crude drug being various kind of bioactive substance could inhibits tumor, increase immunity, wipe out free radical, prevent disease of cardiovascular system, have anti-radiation, anti-inflammeutory effects. At 1977 the Hippophae rhamnoides was written in Chinase Pharmacopoeia.

• 한국분말재료학회지
• /
• 제27권6호
• /
• pp.458-463
• /
• 2020

Hispidin is a secondary metabolite found in numerous medicinal mushrooms that has attracted significant attention, owing to its distinct biological effects, including antioxidant, anti-inflammatory, antitumor, and cytoprotective properties. Experiments are being carried out to study the interaction of detonation nanodiamonds (DNDs) with synthetic and natural hispidin sourced from extracts of Pholiota sp. fungus. The bioluminescence method is used to determine the adsorption/desorption properties of DNDs toward hispidin. It is found that hispidin forms strong conjugates with DNDs, and the use of various eluents does not result in a significant release of the adsorbed hispidin molecules. DND-bovine serum albumin (BSA) complex, where DNDs serve as a carrier for the protein and the latter acts as a hispidin sorbent, has been developed and applied in hispidin adsorption/desorption tests. The results support the use of the DNDs as a carrier for hispidin in medical applications. They also advocate the application of the DND-BSA complex for isolating the substance from fungal extracts.

• Journal of Microbiology and Biotechnology
• /
• 제10권1호
• /
• pp.27-34
• /
• 2000

The chloroform and methanol (2;1, v/v) extract from an edible plant, Actinidia arguta Planchon, appeared to possess antitumor activity against human leukemias Jurkat T and U937 cells through inducing apoptosis. The substance in the solvent extract was purified by silica gel column chromatography, preparative TLC, and Sephadex LH-20 column chromatography. Characteristics of the substance analyzed by UV scanning analysis, $^1H$ and $^{13}C$ NMR spectra suggested that the substance belongs to the chlorophyll derivatives-like group. The $IC_{50}$ value of the chlorophyll derivative (Cp-D) determined by MTT assay was $15\mu\textrm{g}/ml$ for Jurkat, $10\mu\textrm{g}/ml$ for U937, and $11.4\mu\textrm{g}/ml$ for HL-60m and was more toxic to these leukemias than to solid tumors or normal fibroblast. In order to elucidate cellular mechanisms underlying the cytotoxicity, the effect of the Cp-D on Jurkat T cells was investigated. When cells were treated with the Cp-D at a concentration of $15\mu\textrm{g}/ml$, [3H]thymidine incorporation declined rapidly and wa undetectable in 1h. However, no significant changes were made in the cell cycle distribution of the cells by 24h. The sub-Gl peak representing apoptotic cells began to be detectable in 36h, at which time apoptotic DNA fragmentation was also detected on agarose gel electrophoresis, demonstrating that the cytotoxic effect of the Cp-D is attributable to the induced apoptosis. Under the same conditions, although the protein level of cyclin-dependent kinases such as cdc4, csk6, cdk2, and cdc2 was not significantly changed until 24h, the kinase activity of all c안 rapidly declined and reached a minimum level within 1-6h and then recovered to the initial level by 12h and sustained until 24h. These results suggest that inactivation of cdks at an inappropriate time during the cell cycle progression in jurkat T cells following a treatment with the Cp-D leads to induction of apoptotic cell death.

• 한국식품과학회지
• /
• 제31권1호
• /
• pp.238-245
• /
• 1999

옻나무에서 극성이 큰 물과 에탄올로 추출한 물질을 생쥐 뇌세포를 배양하여 glucose oxidase에 의해 생성되는 hydroxyl radical에 대한 항산화 효과와 암세포에 미치는 영향을 알아보았다. 먼저 항산화 효과에 있어서, $7{\sim}10$일 정도 배양된 생쥐 뇌세포에 20 mU/mL GO system을 처리한 후 물 및 에탄올 추출물 (30 mg/mL)을 일정량 첨가하여 hydroxyl radical에 대한 옻나무 추출물의 항산화 효과를 측정하였다. 그 결과 GO 20 mU/mL만을 처리한 구에서는 생쥐 뇌세포의 생존률이 52.0%인데 반하여, 옻나무 물 추출물을 1, 2, 4, 7, $10\;{\mu}L$ 첨가시 각각 60.0, 66.0, 72.0, 84.0 및 90.1%로서 첨가량이 증가할수록 매우 높은 생존률을 보였다. 이러한 경향은 에탄올 추출물의 첨가시에도 유사하였는데, $1\;{\mu}L$과 $2\;{\mu}L$ 첨가시 생존률은 55.0%와 64.0% 였고, 4, 7, $10\;{\mu}L$에서는 각각 70.0, 79.0, 91.0%로서 나타났다. 항산화력을 비교하기 위하여 잘 알려진 항산화제인 ascorbic acid를 50, $100\;{\mu}M$ 첨가시 쥐의 뇌세포의 생존률은 대조군에 대해 각각 87.0%와 90.0%이었는데 이것은 각각의 옻나무 추출물 10% $(10\;{\mu}L/well)$ 첨가시 나타났던 항산화 효과와 비슷한 결과였다. 따라서 이러한 항산화 효과에 관여하는 주요 성분을 전기영동과 작용기 분석을 통해 알아본 결과 laccase라는 물질이 주성분이라는 것과 그것은 구리를 함유한 당단백질로서 크기는 약 210 KDa과 230 KDa으로서 dimer로 되어 있다는 것을 알 수 있었다. 한편 옻나무 추출물의 HeLa cell에 미치는 영향을 보기 위해 in vitro 방법으로서 HeLa cell에 대해 물 및 에탄올 추출물(30 mg/mL)을 최고 10% 농도까지 첨가하여 시간별로 측정한 결과 $10\;{\mu}L$(10%) 첨가 후 12시간에는 40.0%가, 48시간에는 60.0% 정도의 HeLa cell이 사멸되는 것을 알 수 있었다. 암세포 성장 억제 효과에 대한 결과는 in vivo 방법에 있어서도 유사한 결과를 얻었다. 즉 BALB/c의 복강에 CT-26 $(1{\times}10^6\;cells/mL)$을 접종한 후 종양을 발생케 한 후 옻나무 추출물을 주입시 주입 7일 후 대조군에 비해 종양크기가 현저하게 작아지는 것을 볼 수 있었다.

• 한국식품영양학회지
• /
• 제23권4호
• /
• pp.556-561
• /
• 2010

Tomato fruits(Lycoperisicon esculentum) synthesize the glycoalkaloids dehydrotomatine and ${\alpha}$-tomatine, possibly as defense against bacteria, fungi and insects. We developed a new effective method to prepare and purify dehydrotomatine and ${\alpha}$-tomatine that exists in tomato fruits using alumina column chromatography and high performance liquid chromatography (HPLC). The tomato glycoalkaloids(TGA) in tomato was extracted with 2% acetic acid, and then precipitated with ammonium hydroxide(pH=10.5). The dry precipitate substance was applied on alumina column, and then fractionated with water saturated n-butylalcohol. The TGA(Fr. No. 26~36) were collected and dried under reduced pressure. The TGA was performed on a reverse phase HPLC(Inertsil ODS-2, $5\;{\mu}m$), eluted with acetonitrile/20mM $KH_2PO_4$(24:76, v/v) at 208 nm. Two peaks were detected on HPLC, and individual peak was collected by repeating HPLC. Furthermore, to confirm the identity dehydrotomatine and ${\alpha}$-tomatine, each peak isolated was hydrolyzed with 1N HCl into sugar and aglycone tomatidine. The sugars were converted to trimethylsilyl ester derivatives. The nature and molar ratios of sugars were identified by gas-liquid chromatography(GLC) and the aglycone by high-performance liquid chromatography(HPLC). The first peak (Rt=17.5 min) eluted from HPLC was identified as dehydrotomatine, and second peak(Rt=21.0 min) was as ${\alpha}$-tomatine. This technique has been used effectively to prepare and isolate dehydrotomatine and ${\alpha}$-tomatine from tomato fruits.

• 대한예방한의학회지
• /
• 제4권1호
• /
• pp.144-151
• /
• 2000

This study was carried out to evaluate cytotoxic effects of Houttuynia cordata Thunberg extracts on murine leukemia tumor cell lines. Disruptions in cell organelles were determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazol iumbromide (MMT) assay. The comparison of $IC_{50}$ values of Houttuynia cordata Thunberg extracts on $L1210,\;P388D_1$ and Vero cell lines showed that the methanol extract of Houttuynia cordata Thunberg indicated the most antitumor activity in the MTT assay. In order to develop a antimicrobial agent, dried Houttuynia cordata Thunberg was extracted with several solvents, and then antimicrobial activity was investigated. The minimal inhibitory concentration (MIC) of the extracted substance against microorganisms were also examined. Antimicrobial activity of amocla and ketoconazole as references was compared to those of other solvent extracts such as $H_2O$, n-hexane, chloroform, ethyl acetate ethanol and methanol. The antimicrobial activity of all extracts from the sample had growth inhibition activity against gram-negative bacteria, yam-positive bacteria and fungi $(MIC,\;>\;200\;{\mu} g/ml)$. These results suggest that the methanol soluble extract of Houttuynia cordata Thunberg may be a valuable choice for the studies on the treaeent of murine leukemia tumor cell lines and antimicrobial agents.

• 대한한의학회지
• /
• 제33권3호
• /
• pp.160-183
• /
• 2012

Objectives: Coptidis Rhizoma is one of the most popular and multi-purpose herbs in traditional medicine. The purpose of this study was to contribute to research and applications of Coptidis Rhizoma in clinic, by analyzing and reviewing international studies on its chemical compositions and pharmacological effects. Methods: This study analyzed 344 articles published from 2000 to 2010 in PubMed, Refworks, Riss, and KTKP. The search keywords were "Coptis chinensis", "Coptis japonica", "Coptidis Rhizoma", "huanglian" and "huanglian in Chinese". From them, we selected 114 articles which met our inclusion criteria. Results: This study reviewed 114 articles on Coptidis Rhizoma and its active components in terms of 'Active components', 'Experimental studies', 'Clinical studies', 'Industrial use' and 'Side Effects/Toxicity'. Conclusions: The active components of Coptidis Rhizoma are berberine, coptisine, epiberberine, palmatine, jateorrhizine, magnoflorine, worenine, etc. It is reported that Coptidis Rhizoma and its active components have anti-inflammatory, antibacterial, antitumor, and antioxidant activity, and cardiovascular, hepatoprotective, antidiabetic, neuroprotective, gastrointestinal, pain relieving, discharge phlegm and metrocyte proliferation effects. Moreover, we found that Coptidis Rhizoma can be used for bath preparation, cosmetic products and as a natural antimicrobial substance.

• 한국융합학회논문지
• /
• 제9권10호
• /
• pp.93-101
• /
• 2018

본 연구는 천연 플라보노이드계 물질인 쿼세틴을 사람 구강암세포주인 HSC-2 세포에 처리한 후 나타나는 항암 및 항전이 효과를 보기 위함이다. 연구 결과를 통하여 쿼세틴은 HSC-2 세포의 세포생존율 과 세포증식율이 감소하였으며, 이 세포 사멸의 경로는 세포 자살 프로그램인 세포자멸사의 경로를 통하여 일어나는 것임을 확인하였다. 또한 세포사멸에 큰 영향을 주지 않았던 농도인 쿼세틴 $100{\mu}M$ 처리군부터 HSC-2 세포의 이동력 과 침습력을 억제하는 효과가 있음을 확인하였다. 따라서 본 연구자는 종합적인 실험 결과를 통하여 구강암 세포에 있어서 $200{\mu}M$이상의 쿼세틴 처리는 세포자살 프로그램을 가동하여 세포사멸을 유도하고, $100{\mu}M$ 이상의 쿼세틴 처리는 세포의 이동과 침습을 억제하여 항암, 항전이 활성을 일으키는 것을 밝혔다. 그러므로 쿼세틴은 구강암에 있어 전이를 억제하고 암을 치료하기 위한 항암제로서 충분한 가치가 있음을 시사한다.