• 생약학회지
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• 제34권3호통권134호
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• pp.256-262
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• 2003

Lonicerae Flos (LF) has been used as an anticancer, anti-viral, and anti-inflammatory agent in traditional herbal medicine. In this study, induction of rat growth hormone (rGH) by addition of methanol (MeOH) extract of LF of Lonicerae (L.) Folium or several constituents of L. Folium were carried out in the pituitary cell culture system. Induced rGH level by addition of 70% MeOH extract of LF was increased to $732.65{\pm}105.64%$ of control (n=18, p<0.01), however, the other sequential fractions were not significantly different from the control. Ochnaflavone, a constituent of L. Folium, induced rGH level in the cell culture to $329.73{\pm}160.00%$ of control (n=6, p<0.01). An I..v. injection of the MeOH extract of LF did not increase plasma rGH level in anesthetized rats. Unfortunately, the MeOH extract of LF induced prolactin and LH release about 7 and 5 fold of the control, respectively (p<0.05, each). In conclusions, 70% MeOH extract of LF exerted induction of rGH release in rat pituitary cell culture. Further studies to investigate mechanisms of the inducded rGH by LF are in progress.

• 동의생리병리학회지
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• 제19권6호
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• pp.1656-1658
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• 2005

The effects of chloroform extract from Lepidolaena tayiorii (L. tayiorii) on antifungal activity were investigated. The crude chloroform extract of L. tayiorii inhibited the growth of the Gram positive bacteria Bacillus subtilis ATCC 19659, (5 mm inhibition zone at $150{\mu}g/disc$) and the dermatophytic fungus Trichophyton mentagrophytes ATCC 28185, (6 mm inhibition zone at $150{\mu}g/disc$), and cytotoxic to P388 murine leukaemia cells ATCC CCL 46 P388D1, ($IC_{50}\;405.0{\mu}g/mL\;at\;150{\mu}g$/disc) and cytotoxic to BSC monkey kidney cells (@ 5 mg/mL, $150{\mu}g/disc;$ +++: 100% activity). We suppose that this crude chloroform extract of L. tayiorii is the strong antimicrobial and cytotoxic activities.

• 약학회지
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• 제50권1호
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• pp.15-20
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• 2006

Puerarin and daidzin have been isolated from Puerariae thunbergiana Benth. Structures were determined by spectroscopic methods. Compounds showed weak antimicrobial activity against S. mutans, S. epidermidis, S. aureus, and C. albicans (MIC, $800{\mu}g/ml$). However, these compounds were not antioxidative. Puerariae thunbergiana Benth. extracts against microorganisms were evaluated in terms of the minimum inhibitory concentrations (MIC). In general, C. albicans was stronger antimicrobial activity than the other microorganisms. The antioxidative activity of was observed in the etyl acetate extract ($IC_{50},\;119.87{\pm}0.16\;{\mu}g/ml$). The DPPH radical scavenging effect ($IC_{50},\;1,673.3{\pm}0.54\;{\mu}M$) of the puerarin was comparable with that of synthetic antioxidant, BHA $(IC_{50},\;88.39{\pm}1.1){\times}10^{3}{\mu}M$. These results suggest that puerarin and daidzin have a potential antimicrobial activity.

• 대한본초학회지
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• 제33권3호
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• pp.37-43
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• 2018

Objectives : Butylated hydroxytoluene (BHT) and butylated hydroxyanisole (BHA) were well known as anti-oxidant, but they were limited to use because of toxicity. So, many studies are being done to develope natural anti-oxidant. Total phenolic and flavonoid contents along with total antioxidant capacity of the ethanolic extract of Plantaginis Herba (PH) were evaluated to explore the reliable and potential sources of novel natural antioxidants. Methods : Total polyphenol contents and total flavonoid contents in PH ethanol extract were determined by colorimetric method. And DPPH(1.1-diphenyl-2-picrylhydrazyl), ABTS(2'-azino-bis (3-ethylbenzothiazoline-6-Surfonicacid)) free radical scavenging capacity and reducing power inhibition activities of PH ethanol extract were measured at 100, 500, 1000, $5000{\mu}g/m{\ell}$ concentrations by spectrometric assay. Results : The total polyphenol contents and total flavonoid contents of the extract were 161.99 mg/g, 144.05 mg/g, respectively. Also, DPPH, ABTS free radical scavenging capacity and reducing power of PH ethanol extract in treated concentrations (100, 500, 1000, $5000{\mu}g/m{\ell}$) increased dose dependently. In particular, DPPH free radical scavenging capacity of PH ethanol extract from $500{\mu}g/m{\ell}$ was significantly increased compared to positive control (BHA). ABTS free radical scavenging capacity of PH ethanol extract from $1000{\mu}g/m{\ell}$ was significantly higher than BHA. Also, reducing power showed that PH ethanol extract from $500{\mu}g/m{\ell}$ was significantly increased compared to BHA. Conclusions : These results suggest that PH ethanol extract has effects to scavenge free radicals, thus PH has potential and applicable benefits for development of materials and products to have anti-oxidation functions.

• 대한본초학회지
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• 제31권3호
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• pp.43-48
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• 2016

Objectives : The objective of this research was to investigate the antioxidant activities of stem bark of Maackia amurensis extract.Methods : Stem bark of Maackia amurensis extract were prepared using 70% methanol. Methanol extracts were fractionated to hexane, chloroform, ethyl acetate, butyl alcohol, water fractions and investigated. The antioxidant activities of fractions was evaluated by four different assays as total polyphenol contents, total flavonoid contents, DPPH(1,1-diphenyl-2-picrylhydrazyl) free-radical scavenging activity and ABTS(2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) scavenging ability.Results : The yield of methanolic extracts from stem bark of Maackia amurensis was 10.16%, whereas those of its solvent fractions (hexane, chloroform, ethyl acetate, butyl alcohol, and water) were 5.45, 11.39, 13.88, 26.07, and 40.80%, respectively. The total polyphenol contents and electron donating ability of 70% methanol extracts from stem bark of Maackia amurensis were 15.44 mg/g and 194.15 μg/mL of its IC₅₀, respectively. The 70% methanol extracts showed the highest antioxidant activity. The total polyphenol content and total flavonoid content of chloroform fractions were higher in each of 201.98 mg/g and 13.55 mg/g. The chloroform fraction showed the lowest levels of DPPH(IC₅₀, 183.95 μg/mL) and ABTS scavenging activity(IC₅₀, 10.0 μg/mL). The antioxidant activity was detected in methanol extract, chloroform fractions.Conclusions : These results indicate that 70% methanol extract and its fractions of stem bark of Maackia amurensis, especially chloroform fraction, have the properties of anti-oxidant suggesting stem bark of Maackia amurensis may be a candidate for natural and functional materials.

• KSBB Journal
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• 제18권3호
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• pp.239-242
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• 2003

본 연구에서는 니코틴분해에 효과가 있는 천연식물 추출물질 (NDM)을 시험관에서 직접 혼합한 경우와 랫트를 이용한 동물 실험을 통해서 니코틴의 코티닌 전이를 조사해 보았다. 니코틴 분해제 (NDM)에 의한 니코틴의 코티닌으로의 분해를 시험관에서 확인한 결과 혼합 90분경과 후 대조군과 대비하여 약 2.5배의 분해능을 보였다. 랫트를 이용한 동물실험에서 NDM의 니코틴분해능 확인결과 혈중 니코틴 농도는 90분 경과 후 대조군 대비 약 33%의 감소를 나타냈고, 코티닌의 혈중 농도는 약 57%의 증가를 나타내었다. 이러한 결과를 통해 NDM이 니코틴 분해에 우수한 효과가 있음을 확인하였다. 본 연구결과에서 알 수 있듯이 기존 알려진 여러 천연식물 추출물들은 니코틴의 대사경로 중 인체에 무해한 코틴닌으로의 전이유도를 촉진하는 물질을 함유하고 있는 것으로 나타났으며, 단일 추출물질이 아닌 복합추출물질로 구성되어 기존의 니코틴 분해제에 비해 탁월한 효과를 보여 주었다.

• 한국약용작물학회지
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• 제18권4호
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• pp.255-265
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• 2010

The extent of growth L. plantarum (LP), L. delbrueckii subsp. bulgaricus (LD), L. fermentum (LF), S. thermophilus (ST), B. longum (BI) and S. cerevisiae (SA) was generally good with the lower concentration of the ginseng extract. Total sapogenin content was slightly different with kinds of a fermentation microorganism and the time of fermentation process, and generally reduced compare to before fermentation. The content of ginsenoside Rb1, Rb2, Rb3, Re and Rf were decreased with the fermentation but ginsenoside Rd was increased by the E, LF and SA fermented extract. The content of compound K increased in the order of not-fermented extrac < enzyme fermented extract < enzyme and microorganism fermented extract, and as the fermented time get longer, the content of compound K was sightly increased. Especially, the content of compound K of the SA fermented extract was the most increased, also it of the BI, LD and LF fermented extract was increased, so these extract were considered a high valuable. Polyphenol content of the BI, LD, LP and ST fermented extract indicated $9.18{\pm}0.39{\sim}15.68{\pm}0.54$ mg/10 g which was lower than it of a not-fermented extract ($11.92{\pm}0.26{\sim}28.41{\pm}0.39$ mg/10 g). Flavonoid content of a ginseng fermented extract indicated $26.93{\pm}0.17{\sim}156.45{\pm}1.29$ mg/10 g, it was higher than a not-fermented extract ($18.06{\pm}0.90$ mg/10 g). As the fermented time get longer, the flavonoid content tendency to increase. DPPH radical scavenging activity of a fermented ginseng extract was $24.11{\pm}1.41{\sim}55.62{\pm}0.33%$, it was slightly lower compared to a natural antioxidant, vitamin C. But it of the LF and ST fermented extract was similar to a natural antioxidant, vitamin C. It has not a concerned in a fermentation. Nitrite scavenging ability of a 24 hr fermented extract was above 80% at pH 2.5 and 4.2, it was similar to an artificial antioxidant, BHT ($84.76{\pm}0.13%$; pH2.5, $84.98{\pm}0.11%$; pH 4.2). It has not a concerned in a fermentation. SOD-like activity of a fermented extract was lower than that of a not-fermented extract ($19.22{\pm}0.51%$), but it of the E and LP-fermented extract was a very highly notable value. As the fermented time get longer, the SOD-like activity tendency to increase.

• 동의신경정신과학회지
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• 제34권3호
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• pp.247-257
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• 2023

Objectives: To analyze the trend of Korean patents of natural product extracts for depression. This study also aimed to enhance the development and application of natural product extracts for depression in Korean herbal medicine. Methods: We searched the Korea Intellectual Property Rights Information Service and Science ON to collect Korean patent data of natural product extracts for depression. Two authors independently screened and assessed full texts of screened patents for eligibility. Included patents were analyzed both quantitatively and qualitatively. Results: A total of 62 patents from 2002 to December 2021 were included for analysis. The number of patents has constantly increased since 2002. Glycyrrhiza uralensis Fischer, Perilla frutescens Britton var. acuta Kudo, Zizyphus jujuba Miller var. inermis Rehder were frequently used among 62 patents. Alcohol extraction was mostly used, followed by water extraction and ethyl extraction regarding extract methods. Eight patents were herbal medicine used for treating depression in Korean Medicine. Conclusions: Various Korean herbal medicine and minerals were used as natural-products for treating depression. These results provide fundamental data that can be used for inventing new patents using Korean herbal medicine, developing new natural product extracts for depression, and extending the range of application of these products in clinical setting.

• Natural Product Sciences
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• 제23권1호
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• pp.40-45
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• 2017

Epilepsy is a brain disorder that affects millions of people worldwide. It is characterized by recurrent and unpredictable seizures that are usually controlled with antiepileptic/anticonvulsive drugs. However, most antiepileptic drugs produce various side effects such as tolerance and sedation. Thus, there is a growing interest for alternative anticonvulsive drugs, preferably from natural or herbal sources. In this study, we evaluated the anticonvulsive effects of Rehmannia glutinosa (RG). The anticonvulsive effect of RG extract was evaluated using electroshock- and chemical-induced seizure tests in mice. To identify its probable mechanism of action, the effects of RG extract on $Cl^-$ influx was measured in vitro. We found that RG extract has anticonvulsive effects against electroshock-induced seizures, as indicated by an increased seizure threshold in mice. The RG extract also decreased the percentage of seizure responses induced by the GABAergic antagonist, pentylenetetrazole. These results suggest that the anticonvulsive effects of RG extract are mediated through a GABAergic mechanism. In support of this mechanism, our in vitro test showed that RG extract increases intracellular $Cl^-$ influx. Furthermore, RG extract did not show sedative and/or muscle relaxant effects in the open-field and rota-rod tests. Altogether, these results confirm that RG extract could be a herbal anticonvulsant and a potential alternative for clinical use.

• 대한한의학회지
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• 제24권4호
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• pp.71-81
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• 2003

So-Hap-Hyang-Won, a traditional oriental medicine used in the treatment of stroke patients, was examined for its ability to reverse the cell damage caused by lipid peroxidation products and oxidative stress in bovine aortic endothelial cells (BAEC). The effects of herbal medicine on cell proliferation and recovery of oxidative damaged situation were studied in BAEC, which was considered an appropriate in vitro model for stroke resulting from various vascular diseases prevalent in advanced age. In a clinical study of stroke patients, So-Hap-Hyang-Won appeared to improve considerably arm and leg movements as well as consciousness disturbance condition, compared with other traditional medicines used for stroke. When BAEC were treated with extracts of the lyophilized herbal medicines, only that of So-Hap-Hyang-Won stimulated cell proliferation and showed no toxicity even at high concentrations. In studies of BAEC treated with extracts of the lyophilized material of the 14 components of So-Hap-Hyang-Won, only the extract of Foeniculi Fructus stimulated cell growth at all concentrations tested. Moreover, when cells were treated with Foeniculi Fructus (10 and 100 mg/ml) extract after prior exposure to t-BHP ($l0\mu\textrm{M}$) or HNE ($0.2\mu\textrm{M}$), lipid peroxidation products which are known to be involved in aging and vascular diseases, or after the exposure to SIN-l ($500\mu\textrm{M}$), which generates nitric oxide (NO) and other reactive oxygen species, there was substantial recovery from the oxidative damage, presumably due to the radical-scavenging effect of Foeniculi Fructus extract. Foeniculi Fructus not only showed stimulatory effects on cell growth and cell damage repair in BAEC, but also appeared to show the most anti-aging activity among all the herbal components of So-Hap-Hyang-Won.