• Natural Product Sciences
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• 제16권4호
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• pp.280-284
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• 2010

During liver fibrosis, hepatic stellate cells (HSCs) undergo a complex activation process characterized by increased proliferation and extracellular matrix deposition, which is the major pathological feature of hepatic cirrhosis. Therefore, suppression of HSCs activation has been proposed as therapeutic strategies for hepatic fibrosis. We tried to screen the antifibrotic activity of natural products employing HSC-T6, hepatic stellate cell lines as an in vitro assay system. In the present study, we investigated the antiproliferative activity of aerial parts and roots of Pulsatilla koreana Nakai (Ranunculaceae). Our present study shows that roots of P. koreana exerted more strong inhibitory activity compared to its aerial parts. In addition, among the fractions of the aqueous methanolic extract of P. koreana roots, both n-hexane and $CHCl_3$ fraction showed the strong inhibitory activity on HSC proliferation. Further study also demonstrated that the n-hexane and $CHCl_3$ fraction of P. koreana roots significantly inhibited the HSC proliferation in time- and concentration-related manners.

• Natural Product Sciences
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• 제22권2호
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• pp.102-106
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• 2016

A methanolic extract of Corydalis ternata having aldose reductase inhibitory activity was examined as a possible aldose reductase (ALR2) inhibitor, a key enzyme involved in diabetic complications. Seven alkaloids, tetrahydrocoptisine (1), corydaline (2), tetrahydropalmatine (3), isocorybulbine (4), corybulbine (5), dehydrocorydaline (6), and N-methyltetrahydroberbinium (7) were isolated from $CHCl_3$ fraction of C. ternata methanol extract. Among them, compounds 1, 5, and 7 exhibited $5.04{\pm}1.97%$, $5.00{\pm}1.26%$, and $1.80{\pm}2.33%$ inhibitions, respectively at $40{\mu}M$. The activities of the single compounds were not comparable to that of the whole extract, suggesting that the whole combination of each single compound was responsible for the activity of the extract as shown in many cases of natural medicines. Even though this is the second report on aldose reductase inhibition activity of C. ternata, recombinant human aldose reductase was employed in this study unlike in the previous report. Furthermore, the aldose reductase inhibitory activities of isocorybulbine, corybulbine, and N-methyltetrahydroberbinium, to the best of our knowledge, were evaluated for the first time in this study. These results suggest a use of the extract of C. ternata for ameliorating diabetic complications.

• 약학회지
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• 제52권1호
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• pp.1-6
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• 2008

The present study investigated the antiproliferative effects of Crnum asiaticum var. japonicum against HL-60 human leukemia cells. The 80% MeOH extract or several solvent fractions from the C. asiaticum inhibited the growth of HL-60 cells, whereas the growth of HEL-299 cells, human embryonic lung fibroblast, was scarcely inhibited. When the HL-60 cells were treated with the $CHCl_3$ fraction, the BuOH fraction, the EtOAc fraction and the $H_2O$ fraction, DNA ladder, chromatin condensation and increase of sub-G1 hypodiploid cells were observed. Furthermore, the $CHCl_3$ fraction and the BuOH fraction reduced Bc1-2 mRNA level, whereas Bax mRNA level was increased. These results suggest that the inhibitory effect of C. asiaticum on the growth of the HL-60 cell might be mediated through the induction of apoptosis via the down-regulation of Bc1-2. Taken together, components of C. asiaticum might have a therapeutic potential for the treatment of human leukemia.

• Journal of Applied Biological Chemistry
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• 제62권4호
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• pp.339-345
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• 2019

본 연구는 마키베리 추출물이 화장품의 신규 원료로서 가능성이 있는지를 타진하는 것을 목적으로 진행되었다. 마키베리 조추출물을 클로로포름층과 에틸아세테이트층, 증류수층으로 분리하였다. 먼저, 마키베리 추출물들의 독성 여부를 피부각질세포주인 HaCaT 세포와 색소형성세포주인 B16F10 세포를 통해 확인하였다. 항산화 효과 실험에서 클로로포름층, 에틸아세테이트층 그리고 증류수층 추출물들은 모두 산화적 스트레스를 줄이는 효과를 보였고 그 중에 에틸아세테이트층 추출물은 양성대조군인 글루타치온에 비해서도 우수한 결과를 나타내었다. 마키베리 추출물들은 α-MSH에 의한 멜라닌 합성도 저해하였다. 또한, 마키베리 추출물들은 그람양성균인 황색포도상구균과 표피포도상구균, 그람음성균인 녹농균에 대해서도 항균 효과를 보였다. 특히, 에틸아세테이트층 추출물은 황색포도상구균에 대해서 뛰어난 항균 효과를 보였다. 본 연구를 통해서 마키베리 추출물들이 화장품의 항산화나 미백 기능성 원료로서뿐만 아니라 화장품의 천연방부제 원료로서도 잠재적인 가능성이 있음을 확인할 수 있었다.

• Toxicological Research
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• 제24권1호
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• pp.29-36
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• 2008

The present study investigated the anti-proliferative and chemosensitizing effects of Crinum asiaticum var. japonicum against multi-drug resistant (MDR) cancer cells. The 80% methanol extract, chloroform ($CHCl_3$) fraction and butanol (BuOH) fraction of C. asiaticum inhibited the growth of mitoxantrone (MX) resistant HL-60 (HL-60/MX2) cells. When HL-60/MX2 cells were treated with the $CHCl_3$ and BuOH fractions, DNA ladder and sub-G1 hypodiploid cells were observed. Furthermore, the fractions reduced BcI-2 mRNA levels, whereas Bax mRNA levels were increased. These results suggest that the inhibitory effect of C. asiaticum on the growth of the HL-60/MX2 cells might arise from the induction of apoptosis. Treatment of HL-60/MX2 cells with the fractions markedly decreased the mRNA levels of the multi-drug resistance protein-1 and breast cancer resistance protein. The $CHCl_3$ fraction and hexane fraction increased MX accumulation in HL-60/MX2 cells. These results imply that the $CHCl_3$ fraction of C. asiaticum plays a pivotal role as a chemosensitizer. We suggest that components of C. asiaticum might have a therapeutic potential for the treatment of MDR leukemia.

• 생약학회지
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• 제23권2호
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• pp.73-76
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• 1992

Effect of various fractions prepared from the methanol extract of Ixeris sonchifolia and flavonoids isolated from the extract on hypercholesterolemic mice were examined. When various fractions $(CHCl_3,\;Interphase,\;EtOAc,\;n-BuOH\;and\;H_2O)$were administered to mice, the Interphase material produced a significant activity. Total cholesterol level in the Interphase material-treated group given doses of 25 and 50mg was decreased significantly by as much as 16% and 30%, respectively. Among the isolated flavonoids, cynaroside caused a significant hypocholesterolemic activity.

• Journal of Nutrition and Health
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• 제40권4호
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• pp.295-302
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• 2007

This study was designed to examine the effects of fractions of ethanol extract of Benincasa hispida (wax gourd) on hepatic antioxidative status in streptozotocin (STZ) induced diabetic rats. Sprague-Dawley rats were induced diabetes mellitus by STZ injection (45 mg/kg) into the tail vein and were divided into 5 groups: normal, STZ-control, three experimental diabetic groups. Fractions of ethanol extract of Benincasa hispida were administered orally into the diabetic rats for 14 days. Hepatic glutathione peroxidase (GSH-px) activity (determined with H$_2$O$_2$ as substrate) was increased in the groups supplemented with chloroform (CHCl$_3$) and butanol (BuOH) fractions. Glutathione peroxidase (GR) activity in the liver cytosol of H$_2$O fraction groups was significantly lower than that of STZ-control group. The H$_{2}$O fraction supplemented group has been shown the notably decrease in the hepatic superoxide dismutase (SOD) activity. The hepatic cytosol catalase (CAT) activity was significant decreased by the supplementation with BuOH fraction. It was found from the results that the supplementation of BuOH and H$_2$O fractions of Benincasa hispida extract could be beneficial for the diabetic complications and damages from the lipid peroxidation.

• 한국자원식물학회지
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• 제21권1호
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• pp.83-86
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• 2008

솔이끼의 MeOH 추출물을 $CHCl_3$, EtOAc 및 BuOH로 용매 분획하여 $CHCl_3$ 분획으로부터 5,7,3',4'-tetra hydroxy flavone 분리하였고 EtOAc 분획에서 3,3',4',5,7-pentahydroxy-2-phenylchromen-4-one과 kaemperol-3-O-$\beta$-D-glucopy-ranoside를 분리하였다. BuOH분획으로부터는 quercetin-3-O-rutinoside을 분리하여 그 구조를 규명하였다. 솔이끼에서 이 물질들은 처음 분리 되어 보고되는 것이다.

• Natural Product Sciences
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• 제18권3호
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• pp.153-157
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• 2012

Obesity, which is characterized by excessive fat accumulation in adipose tissues, occurs by fat absorption by lipase and sequential fat accumulation in adipocyte through adipocyte differentiation. Thus, inhibition of pancreatic lipase activity and adipocyte differentiation would be crucial for the prevention and progression of obesity. In the present study, we attempted to evaluate anti-adipogenic activity of several algae extracts employing preadipocytes cell line, 3T3-L1 as an in vitro assay system. The effects on pancreatic lipase activity in vitro were also evaluated. Total methanolic extracts of Cladophora wrightiana and Costaria costata showed significant inhibitory activity on adipocyte differentiation as assessed by measuring fat accumulation using Oil Red O staining. Related to pancreatic lipase, C. wrightiana and Padina arborescens showed significant inhibition. Further fractionation of C. wrightiana, which showed the most potent activity, suggested that $CHCl_3$ and n-BuOH fraction are responsible for adipocyte differentiation inhibition, whereas n-BuOH and $H_2O$ fraction for pancreatic lipase inhibition. Our study also demonstrated that n-BuOH fraction was effective both in early and middle stage of differentiation whereas $CHCl_3$ fraction was effective only in early stage of differentiation. Taken together, algae might be new candidates in the development of obesity treatment.

• 한국식품과학회지
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• 제24권4호
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• pp.320-325
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• 1992

천연 항산화 물질을 분리하고자 식용 또는 한약재로 이용되는 붉나무를 75% ethyl alcohol로 항산화 성분을 추출하여 chloroform, ethyl acetate 등의 용매를 사용하여 separatory funnel, column chromatography로 분획하여 얻은 분획물의 항산화 효과를 검토하였다. 붉나무 추출물중 항산화 효과를 나타내는 유효성분은 ethyl acetate와 chloroform에 잘 용해되는 물질로, ethyl acetate로 분리한 분획물을 팜유에 600 ppm 첨가시 AI는 1.60, 돈지에서는 AI가 3.90으로 이들 용매로 분리한 분획물의 항산화 효과는 붉나무 추출 원액보다 높은 현상을 보였다. 붉나무 추출물을 팜유, 돈지 및 대두유에 농도별로 첨가하여 $60^{\circ}C$에 저장하면서 POV, AV 및 TBA가를 측정하여 이들 유지에 대한 산화안정성을 시험한 결과 Rancimat test 결과와 비슷하여 팜유에는 항산화 효과가 뚜렷하였고, 돈지에는 탁월한 결과를 보였다.