• 대한한의학방제학회지
• /
• 제32권1호
• /
• pp.63-82
• /
• 2024

Objective : Saengkankunbi-tang (SKT) is used as a traditional Korean herbal formula for treatment of liver diseases. We investigated the hepatoprotective effects of SKT plus Epimedium koreanum Nakai (EKE) against arachidonic acid (AA) + iron-mediated cytotoxicity in HepG2 cells and carbon tetrachloride (CCl₄)-mediated acute liver damage in mice. Methods : The cyto-protective effects of SKT + EKE were determined by MTT assay, western blot and fluorescence activated cell sorting analysis. In mice, blood biochemistry and western blot were assessed in CCl₄-induced acute hepatic damage. The animal groups included vehicle-treated control, CCl₄, SKT (200 mg/kg/day), EKE (100 mg/kg/day), SKT (200 mg/kg/day) + EKE (100 mg/kg/day) and silymarin (200 mg/kg/day). Results : In HepG2 cells, pretreatment with SKT + EKE significantly suppressed cytotoxicity induced by AA + iron and reduced the expression of proteins related to apoptosis. In addition, pretreatment with SKT + EKE significantly prevented the increase in H₂O₂ production, GSH depletion, and lower mitochondrial membrane potential induced by AA + iron. In CCl₄-induced liver damage mice, the administration of SKT + EKE prevented the liver damage by inhibition of hepatocyte damage and expression of apoptosis proteins in liver. More importantly, in vitro and in vivo assay, SKT + EKE showed significant effect compare with SKT alone or EKE alone in all parameters. Conclusions : These results indicated that SKT + EKE could protect against oxidative stress-induced liver damage, and SKT + EKE is more effective than SKT alone or EKE alone.

• 한국약용작물학회지
• /
• 제11권3호
• /
• pp.195-200
• /
• 2003

강원도에 자생하는 삼지구엽초와 중국산 삼지구엽초 추출물의 생리활성을 결정한 결과는 다음과 같다. 1. 삼지구엽초의 항산화활성은 국내산이 중국산보다 높게 나타났으며, 추출용매는 증류수와 에탄올 1:1 혼합용매 추출물에서 78%로 가장 높은 활성을 보였다. 2. 간암, 폐암, 유방암 세포에 대한 생육억제능은 국내산에서 각각 85, 91, 85%로 나타났으며 이 추출물을 0.4g/L 이하의 농도로 투여 시 정상세포의 생존율은 70% 이상으로 유지되어 세포독성이 낮았으며 국내산이 중국산 보다 면역증진능이 높고 혼합용매 추출물에서 254%의 활성을 나타냈다. 3. 삼지구엽초 추출물들에서는 돌연변이원성이 나타나지 않았고 항돌연변이성은 낮게 나타났다. 4. 간 기능 증진효과는 국내산이 124%의 활성을 보여 중국산보다 높았다. 5. 고혈압 관련인자의 작용에서 국내산이 중국산보다 관련효소(ACE)에 대한 활성억제율이 높았고, 혈당 상승 관련효소 $({\alpha}-glucosidase)$에 대한 활성억제율은 87%였으나 국내산과 중국산 간에는 차이가 없었다. 6. 이러한 결과로 국내산 삼지구엽초는 중국산에 비해 항산화, 항암, 간 기능 증진, 고혈압 억제효과 등의 생리활성이 높아 생약으로서의 활용성이 더욱 높은 것으로 판단되었다.

• 생약학회지
• /
• 제37권4호
• /
• pp.307-313
• /
• 2006

Reactive oxygen species (ROS) and formation of advanced glycation end products (AGEs) play an important role in the pathogenesis of diabetic nephropathy by hyperglycemia. To find natural agents improving diabetic nephropathy, 63 natural resources which used to the treatment of diabetes mellitus in a folk remedy were investigated with an in vitro system employing radical scavenging activity and inhibitory activity of AGEs formation. In results, the extracts of Aspalathus linearis, Rubus coreanus, Rosa rugosa, and Epimedium koreanum significantly inhibited the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical with $IC_{50}$ values less than $10{\mu}g/ml$. The extracts of Zea mays, Cucurbita moschata, Cudrania tricuspidata, and Aspalathus linearis effectively reduced the formation of AGEs compared with the positive control $N-acetyl-_L-cystenine$ (NAC) and aminoguanidine (AG). In addition, the extracts of Aspalathus linearis, Commelina communis, Cornus officinalis, and Lespodeza cuneata showed the all inhibitory activity against DPPH radical and AGEs formation. Also, these resources definitely showed the radical scavenging activity against peroxynitrite $(ONOO^-)$ and hydroxyl radical $({\cdot}OH)$ relating to high glucose-induced ROS production. Thus, these results suggest that some natural resources may regulate the initiation and progression of diabetic nephropathy through inhibition of ROS production and AGEs formation.

• 생약학회지
• /
• 제34권1호통권132호
• /
• pp.109-117
• /
• 2003

Arachidonic acid(AA), which is stored in membrane glycerophospholipids, is liberated by phospholipase $A_2(PLA_2)$ enzymes and is sequentially converted to cyclooxygenase (COX) and lipoxygenase (LOX) then to various bioactive prostaglandins (PGs,) and leukotrienes (LTs). In order to find the specific inhibitors of AA metabolism enzymes such as $PLA_2$, COX-2, 5-LO and lyso PAF acetyltransferase. 195 Korean indigenous plant extracts were evaluated for their inhibitory activity on $PGD_2,\;LTC_4$ production from cytokine-induced mouse bone marrow-derived mast cells (BMMC) and arachidonic acid released from phospholipid and PAF production from lyso PAF. From this screening procedure, methanol extract of eight plants such as Saururus chinensis, Aster tataricus, Chrysanthemum cinerariaefolium, Reynoutria japonica, Disocorea nipponica, Epimedium koreanum, impatiens textori, Veronica rotunda var. subintegra were found to inhibit production of inflammatory mediators in vitro assay system.

• 동의생리병리학회지
• /
• 제18권2호
• /
• pp.436-439
• /
• 2004

Mubigangjang-Ju (MGJ) is a traditional wine, fermented extract of Cynanchum wilfordii, Angelicae gigantis and Epimedium koreanum etc. In the present study, we comparatively investigated the immune-enhancing effect of fermented extract (MGJ) and water extract (WE). Forced swimming test (FST) was performed as a model of activity test in mice and measured blood urea nitrogen (BUN), aspartate aminotransferase (AST), alanine aminotransferase (ALT), lactic dehydrogenase (LDH), glucose (Glc) and total protein (TP) in the serum. Each extracts were orally administered into mice, 10 ㎖/kg, once per day for 7 days using a feeding atraumatic needle. After 3 days, on FST, the immobility time was decreased in the MGJ-fed group (133.7±18.6 s) in comparison with the saline-fed group (155.8±16.6 s). After 7 days, the immobility time was significantly decreased in the MGJ-fed group (105.3±12.7 s) in comparison with the saline-fed group (171.3±8.1 s). In addition, the content of AST was significantly decreased and the contents of BUN, ALT and LDH in the blood serum was also decreased. Whereas, the content of Glc tend to increase and TP level was not changed. However, WE had no effect on all experiments. The present results suggest that fermented extract was more effective than water extract and it may be useful for the immune-enhancing agent.

• 한국약용작물학회지
• /
• 제15권2호
• /
• pp.89-94
• /
• 2007

The effects of angiogenesis inhibitor from the extract libraries of Korean and Chinese medicinal plants were investigated using a protein microarray chip. Protein chip was constructed by immobilization of integrin ${\alpha}_5{\beta}_1$ on protein chip base plates and employed far screening active extracts that inhibit the integrin-fibronectin interaction from the extract libraries. The 100 extracts of medicinal plants were obtained from extract bank of National Institute of Crop Science, RDA. The 14 extracts among 100 extract libraries were shown efficient inhibition activity for the interaction between integrin-fibronectin. The medicinal plants of 14 extracts were Vitex negundo var. incisa (Lam.) C.B. Clarke, Epimedium koreanum Nakai, Cedrela sinensis A. Juss, Ipomea aquatica Forsk, Schisandra chinensis Baill, Pulsatilla koreana Nakai, Paeonia lactiflora Pall. var.hortensis Makino, Oenothera odorata, Allium chinense, Allium victorialis var. platyphyllum MAKINO, Polygonatum odoratum Druce var. pluriflorum Ohwi, Hosta lancifolia, Agrimonia pilosa L. var. japonica Nakai and Potentilla chinensis SER. The Paeonia lactiflora, Oenothera, and Agrimonia pilosa from these 14 extracts libraries were shown strong inhibition activity of integrin ${\alpha}_5{\beta}_1$.

• 한국약용작물학회지
• /
• 제4권4호
• /
• pp.321-328
• /
• 1996

삼지구엽초의 번식과 재배법을 개발하여 자생지에서의 남획과 자연 소멸을 막는 동시에 양질의 삼지구엽초 생약을 확보하긴 위한 일련의 실험중 채취시기 및 생산지에 따른 주요성분의 함량차를 비교 검토하였던바 채취시기에 따라서는 여름보다는 가을(9월 증순)에 채취한 것이 icariin성분이 월등히 높았고, 재배산과 자연산간에는 자연산이 약간 높은 경향이었다. 한편 철원지역에서 채취한 지구엽초(0.94%)에 비해 중국산(0.4%)의 icariin함량은 절반수준에 불과하여 삼지구엽초는 채취시기 및 장소에 따라 품질의 차이 가 큰 것으로 사료된다.

• 농업과학연구
• /
• 제19권1호
• /
• pp.103-114
• /
• 1992

항산화성 생약을 선발하기 위하여 180종의 생약을 10배량의 methanol 로 추출한 액 $50{\mu}l$와 0.1M-linoleic acid ethanol 용액 $100{\mu}l$를 넣은 시험관을 $50^{\circ}C$에서 20시간 두었다가 POV를 측정하는 방법으로 항산화성을 측정하였을 때 45% 이상의 생약 추출물이 항산화성을 나타내었고 그 중 44종 의 생약추출물의 항산화성은 비교적 강력하였다. 단기 항산화시험에 의해서 항산화성이 비교적 강한 것으로 나타난 44종의 생약을 10배량의 methanol로 추출한액 3ml, 0.1M-methyl linoleate ethanol 용액 10ml 및 0.1M-sodium phosphate buffer(pH 7.0) 37ml를 혼합하여 $40^{\circ}C$에서 35일간 저장하면서 POV의 변화를 측정하였던 바 삼백초, 세신, 진범, 음양곽, 백굴체, 소회향, 고삼, 정향, 황금, 감초 및 파고지 동 11종의 생약추출물의 항산화성이 특히 강하였다. Methan이 추출액의 항산화성이 특히 강하였던 11종의 생약을 ethyl acetate 및 petroleum ether로 추출하여 항산화성을 비교하였을 때 음양곽, 소회향, 정향 및 파고지는 추출용매의 종류에 관계없이 강한 항산화성을 나타내었으나 황금 및 감초 등은 methanol 추출액에서만 강한 항산화능이 나타났다.

• Preventive Nutrition and Food Science
• /
• 제15권3호
• /
• pp.189-195
• /
• 2010

Water extracts from 20 medicinal plants, traditionally used for postmenopausal symptoms in Korea, were examined for their vasorelaxant activity in isolated rat thoracic aorta rings precontracted with norepinephrine (NE). Among the 20 medicinal plants, Cornus officinalis (CoEx, 0.3 mg/mL), Schisandra chinensis (ScEx, 0.3 mg/mL), Erythrina variegate (EvEx, 0.3 mg/mL), and Epimedium koreanum (EkEx, 0.3 mg/mL) showed rapid relaxation of endothelium-intact aorta ($69\pm4%$, $40\pm3%$, $25\pm2%$, and $23\pm3%$ of active tone induced by NE, respectively). In contrast, the extracts of Erythrina variegata (EvEx), Angelica gigas (AgEx), Pueraria thunbergiana (PtEx), and EkEx lead to gradual (i.e., long-term) relaxation to baseline in endothelium-intact vessels. The time to complete relaxation was 20～40 min. These 6 plant extracts were selected for the investigation of possible underlying mechanisms. The CoEx-, ScEx-, or EkEx-induced rapid relaxations were virtually abolished by endothelium denudation, and were significantly inhibited by pretreatment with nitric oxide (NO) synthase inhibitor $N^G$-nitro-L-arginine (L-NNA, 10 ${\mu}M$), indicating that increased formation of NO might contribute to the endothelium-mediated relaxation. In long-term responses, the endothelium denudation did not affect PtEx-induced relaxation, whereas it delayed responses by EvEx and AgEx, and significantly inhibited the effect of EkEx. Among EvEx, AgEx, and PtEx, EvEx attenuated the $CaCl_2$-induced vasoconstriction in high-potassium depolarized medium, implying that EvEx is involved in inhibition of the extracellular calcium influx to smooth muscle through voltage dependent calcium channels. These results provide the scientific rationale for the interrelationships between the use of 20 medicinal plants and their effects on cardiovascular health in estrogen deficient conditions.

• 원예과학기술지
• /
• 제18권6호
• /
• pp.834-838
• /
• 2000

연구는 삼지구엽초에 기내 다랑증식체 계의 설정을 위한 일환으로 절편체 별 살균방법, 생장조절제 종류 및 농도에 의한 캘루스의 증식과 배지를 달리한 식물체 분화 조건을 구명하고자 수행하여 얻어진 결과 진균과 박테리아에 의한 감염률은 근경의 정아와 액아에서 0.1% $AgNO_3$ 용액에 60분간 침지한 1차 살균 후 0.3% NaOCl 용액에 20분간 2차 살균한 처리가 가장 낮았으며 잎에서는 모든 처리에서 거의 오염이 발생되지는 않았지만 74% 이상이 고사되었다. 식물체 분화는 당년간 지하부에서 자란 근경의 정단이 0.1% $AgNO_3$ 용액에 30-60분간 침지한 1차 살균 후 0.3% NaOCl 용액에 20분간 2차 침지살균한 처리에서 가장 높았으며 1년 이상 지하부에서 자란 근경의 액아는 0.1 % $AgNO_3$ 30분간 1차 살균 후 0.3% NaOCl에 20분간 2차 살균한 처리에서 식물체 분화가 높았지만 callus와 식물체 분화는 0.1% $AgNO_3$ 60분간 1차 살균 후 0.3% NaOCl에 20분간 2차 살균한 처리에서 가장 높았다. 잎은 0.2% $AgNO_3$ 15분간 1차 살균 후 0.3% NaOCl 에 20분간 2차 살균한 처리에서 캘루스 유도율이 가장 높았다. 계대배양시 캘루스 생장은 변형된 1/2 MS 배지에 BA $0.02-0.2mg{\cdot}L^{-1}$과 NAA $2.0mg{\cdot}L^{-1}$ 혼용첨가한 처리에서 증식률이 가장 높았다. 캘루스로부터 식물체분화는 대부분 캘루스 상태로 증식되고 일부는 엽육조직으로 분화되었지만 1/2 UM 배지와 1/2 SH 배지에서 각각 8%와 3%가 식물체로 분화되었다