• 생명과학회지
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• 제23권4호
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• pp.495-500
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• 2013

본 연구에서는 무당벌레 유충으로부터 분리된 항균 펩타이드 유전자의 일부 영역인 HaGF를 이용하여 대식세포의 염증에 미치는 영향을 조사하였다. 세포는 LPS 처리 후 한 시간 뒤에 HaGF를 처리를 하여, 세포 독성이 나타나지 않는 농도인 5, 25, 50, 100 ${\mu}g/ml$을 사용하였다. 그 결과 HaGF가 염증성 cytokine의 생성을 감소시키는 것을 확인 하였으며 iNOS와 COX-2 역시 100 ${\mu}g$/ml의 농도에서 각각 51%, 49% 저해율을 보였다. 따라서, HaGF는 LPS로 유도된 대식세포주인 Raw 264.7 세포에서의 염증 반응 억제 효과를 기대할 수 있었다.

• 한방안이비인후피부과학회지
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• 제33권4호
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• pp.44-54
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• 2020

Objectives : In the present study, we investigated whether or not an herb mixture including Lycii fructus(HML) has attenuation effects on light stress in rats. Methods : Light stress was induced by exposure to 300 lx of constant lifht for 24 h and 1mg/kg of caffeine was injected into the rat. Rats were orally treated with distilled water of HML for 21 days at 100mg/kg/d. The changes of mortality rate, clinical signs, body, blood chemistry, melatonin and IL-2 expression were analyzed after experiment. Results : Normal weight changes were observed in all treatment groups. In addition, no changes were observed in dead animals and general symptoms. At the time of autopsy, the appearance of all groups and gross examination of major organs were observed, and no gross findings were observed. Blood biochemical tests showed that total cholesterol and HDL cholesterol levels were statistically significantly decreased in the group treated with HML compared to the stress-induced group. Melatonin was measured in the blood, but there was no significant difference in the group treated with HML compared to the group with stress-induced group, but it tended to increase. IL-2 was measured in the blood, no significant change was observed in the group treated with HML compared to the stress-induced group. Conclusions : According to the above results, HML maybe help with hematological changes expressed by caffeine and light-induced stress.

• 대한본초학회지
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• 제32권1호
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• pp.75-81
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• 2017

Objectives : The present study was designed to investigate effects of mixed extracts (9:1, v/v) of Hwangryunhaedoktang, Chamaecyparis obtusa essential oil. We evaluated the antimicrobial and antioxidant activity by manufacturing mixed extracts as the materials for functional medicinal herb cosmetics. Methods : We performed antimicrobial were tested microbes (Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli, Candida albicans, Propionibacterium acnes) by disc diffusion method and measure clear zone. Antioxidant activities were measured by DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging activity. Results : Antimicrobial activities of mixed extracts against S. epidermideis, P. acnes, S. aureus, E. coli, and Candida. A were $10.9{\pm}3.0mm$, $16.9{\pm}2.0mm$, $9.2{\pm}2.0mm$, $10.3{\pm}1.0mm$, $11.8{\pm}3.0mm$ respectively. The Chamaecyparis obtusa essential oil had the highest antimicrobial activities against S. epidermideis, P. acnes, S. aureus, E. coli, and Candia. A and clear zone of microbes ware $16.7{\pm}3.0mm$, $28.8{\pm}0.2mm$, $15.9{\pm}2.0mm$, $11.5{\pm}1.0mm$, $16.3{\pm}3.0mm$. Hwangryunhaedoktang extract showed antimicrobial activity but only P. acnes and S. aureus The antioxidant activities of the mixed extracts were tested through the evaluation of DPPH radical scavenging activity. The 100 % mixed extracts were found to have 90 % DPPH radical scavenging activity. The mixed extracts was presented similar antioxidant activities compared with that of ascorbic acid. As a result, A mixture extract is expected to have antimicrobial effects and free radical scavenging activity was found. Conclusions : Accordingly, It can be concluded that mixed extracts has the potential to cosmetic material.

• 한국패션뷰티학회지
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• 제5권4호
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• pp.139-144
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• 2007

There was an increasing interest that herbal medicine and natural material extracts were proved processes of antioxidant, cosmeceutical activity and the other effects. The aim of this study was to assess the antioxidant of extraction of four kinds from Prunus armeniaca L., Reynoutria elliptica, Curcuma aromatica, Lithospermum erythrorhizon. RE (Reynoutria elliptica) and CA (Curcuma aromatica) have good electron donating ability. The water and ethanol extract of RE at a 100 ppm concentration showed over 70%, the water extract at 500 ppm concentration showed 83% and the ethanol extract at 100 ppm concentration showed 86% of CA. Xanthine oxidase inhibition activity of the water extract of LE (Lithospermum erythrorhizon) at a 1,000 ppm concentration showed over 44%, on the other hand, RE showed in all lowest effect and there was no inhibition activity of a couple more extracts. In the measurement of nitrite scavenging activity, all extracts showed highly scavenging activity. Especially the water and ethanol extract of RE showed over 99% at 500 ppm, also LE showed over 40% at 10 ppm concentration.

• 생명과학회지
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• 제22권3호
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• pp.318-323
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• 2012

본 연구는 B16F10 melanoma 세포를 사용하여 도인승기탕의 70% EtOH와 물 추출물의 멜라닌 생합성, tyrosinase 활성, western blotting으로 측정하였다. 도인승기탕 추출물은 농도 의존적으로 멜라닌 생합성과 tyrosinase활성을 저해하였다. 그 결과 도인승기탕 70% 에탄올 추출물이 멜라닌 합성을 40%, tyrosinase는 51% 저해효과를 나타내었다. Western blot을 이용하여 B16F10 melanoma 세포 내에 tyrosinase, TRP-1, TRP-2, MITF의 발현을 억제하는 효과를 관찰하였다. 이상의 결과에 따라 도인승기탕의 70% 에탄올 추출물은 미백 소재로서 가능성을 가지는 것으로 나타났다.

• Biomolecules & Therapeutics
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• 제29권6호
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• pp.630-636
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• 2021

Eupafolin, a constituent of the aerial parts of Phyla nodiflora, has neuroprotective property. Because reducing the synaptic release of glutamate is crucial to achieving pharmacotherapeutic effects of neuroprotectants, we investigated the effect of eupafolin on glutamate release in rat cerebrocortical synaptosomes and explored the possible mechanism. We discovered that eupafolin depressed 4-aminopyridine (4-AP)-induced glutamate release, and this phenomenon was prevented in the absence of extracellular calcium. Eupafolin inhibition of glutamate release from synaptic vesicles was confirmed through measurement of the release of the fluorescent dye FM 1-43. Eupafolin decreased 4-AP-induced [Ca²⁺]_i elevation and had no effect on synaptosomal membrane potential. The inhibition of P/Q-type Ca²⁺ channels reduced the decrease in glutamate release that was caused by eupafolin, and docking data revealed that eupafolin interacted with P/Q-type Ca²⁺ channels. Additionally, the inhibition of calcium/calmodulin-dependent protein kinase II (CaMKII) prevented the effect of eupafolin on evoked glutamate release. Eupafolin also reduced the 4-AP-induced activation of CaMK II and the subsequent phosphorylation of synapsin I, which is the main presynaptic target of CaMKII. Therefore, eupafolin suppresses P/Q-type Ca²⁺ channels and thereby inhibits CaMKII/synapsin I pathways and the release of glutamate from rat cerebrocortical synaptosomes.

• 한국응용과학기술학회지
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• 제36권2호
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• pp.635-644
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• 2019

본 연구의 목적은 arbutine과 유용성감초추출물 혼합물의 미백 효과를 조사하는 것이다. B16 melanoma 세포에서 알부틴 및 유용성 감초 추출물의 tyrosinase 활성과 멜라닌 생성 억제 효과를 시험관내에서 평가하여 미백 효과를 측정 하였다. B16 흑색 종 세포를 이용한 MTT 분석은 혼합물 (알부틴과 유용성감초추출물)이 세포독성이 없음을 확인하였다. 유용성 감초 추출물과 알부틴은 모두 mushroom tyrosinase 활성이 농도 의존적 효과를 보였다. 혼합물은 다양한 농도 (유용성감초추출물 : 알부틴 = 1 : 1, 1 : 1.5, 1 : 2, 1 : 2.5, 1 : 5)에서 B16 melanoma 세포에서 40-51 %의 tyrosinase 활성을 유의하게 억제하였다. 또한, 시험한 모든 혼합물은 B16 melanoma cell의 멜라닌 함량을 50 % 이상 감소시켰다. 이러한 결과는 알부틴과 유용성감초추출물 혼합사용 시 미백 활성에 효과적임을 시사하는 바이다.

• Journal of Nutrition and Health
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• 제52권2호
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• pp.168-175
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• 2019

Purpose: Barely sprout is a well-known oriental herbal medicine with a wide range of health benefits. Recent studies have provided scientific evidence of its therapeutic effects with expanded application. This study investigated anti-melanogenic effect of barley sprout water extract (BSE) in murine melanocyte B16F10. Methods: Various concentrations (0, 50, 125, and $250{\mu}g/mL$) of BSE and arbutin (150 ppm) were applied to B16F10 stimulated with or without alpha-melanocyte stimulating hormone (100 nM) for 72 hours. The whitening potency of BSE was determined altered cellular melanin contents. Activity and expression of tyrosinase and microphthalmia-associated transcription factor (MITF) were also assayed. Results: Experimental results revealed that treatment with BSE reduced cellular melanin production by approximately 40% compared to the control. Molecular findings supported that suppressed activity and expression of tyrosinase and MITF proteins by BSE were associated with declined cellular melanogenesis. Furthermore, anti-melanogenic effect of BSE ($250{\mu}g/mL$) was similar to that of arbutin, a commonly used whitening agent. Lastly, polyphenols including p-coumaric, ferulic, and vanillic acids were identified in BSE using HPLC analyses. They might be potential active ingredients showing such melanogenesis-reducing effect. Conclusion: BSE was evident to possess favorable anti-melanogenic potency in an in vitro model. As a natural food sourced material, BSE could be an effective depigmentation agent with potential application in pharmaceutical and cosmetic industries.

• 대한의용생체공학회:의공학회지
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• 제39권6호
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• pp.284-296
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• 2018

Obesity is considered as a primary health problem over the past century in line with life environmental changes. It is mainly associated with increased risk of numerous chronic diseases which may significantly reduce health-related quality of life. Therefore, efforts to reduce weight should be performed. This study suggested a novel approach to reduce body fat by applying external stimulation which is micro-current stimulation (MCS). In this clinical study, we evaluated the potential effects of MCS for reduction of abdominal fat and weight loss. Prior to the clinical test, computational simulation was conducted to find the proper MCS conditions that allow externally applied stimulation to reach the internal fat section from the external skin. Particularly, the clinical study evaluated the unilateral effects of MCS for body fat loss and lipolysis without any additional limitations such as physical exercise and dietary therapy. The results showed that whole body fat, waist circumferences, and abdominal fat are gradually decreased after intervention in proportion to the time. From the results, we can estimate that MCS can be effective on the body fat loss by activation of lipolysis in human adipose.

• 대한본초학회지
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• 제29권1호
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• pp.7-12
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• 2014

Objectives : Polygoni Multiflori Radix (PMR), the roots of Polygonum multiflorum Thunberg, is used to nourish the blood and yin and used for preventing premature greying of the hair. There are some articles on its preventing effects on the melanogenesis. However, there is no report about its effects on the collagen and elastin. The present study was designed to investigate its effects on collagen metabolism and elastase activity. Methods : The effects of PMR on type I procollagen production and collagenase activity in human normal fibroblasts Hs68 after UVB (312 nm) irradiation were measured by ELISA method. Cells were pretreated with the PMR for 24 hours prior to UVB irradiation. After UVB irradiation, cells were retreated with the sample and incubated for additional 24 hours. The amount of collagen type I was measured with a procollagen type I C-peptide assay kit. The activity of collagenase was measured with a MMP-1 human biotrak ELISA system. The elastase activities after treatment of PMR were measured as well. Results : In the present study, the collagen production was not increased. However, the increased collagenase activity after UVB damage was significantly recovered to $50.2{\pm}14.5%$, $8.2{\pm}3.1%$, and $10.0{\pm}3.3%$ (10, 30, and $100{\mu}g/ml$). The elastase activities (10, 100, and $1000{\mu}g/ml$) significantly reduced to $75.2{\pm}5.2%$, $40.3{\pm}1.2%$, and $27.0{\pm}1.9%$, respectively. Conclusion : PMR showed the inhibitory effects on collagenase and elastase activity. These results suggest that PMR may have potential as an anti-aging ingredient in cosmetic herbal treatment.