• 생명과학회지
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• 제22권6호
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• pp.730-735
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• 2012

본 연구에서는 신이화에 함유된 물질을 열수와 에탄올을 이용하여 추출한 후 화장품약리활성 및 항염증효과를 확인하고, 화장품 및 바이오산업에 적용하기 위한 천연소재로써의 이용 가능성을 살펴보았다. DPPH 라디칼 소거능 실험결과 농도의존적으로 소거능 효과를 보이며, 열수추출물의 경우 5,000 ug/ml 농도에서 대조군인 BHA보다 우수한 효능을 보였다. SOD 유사활성에서는 농도가 증가할수록 유사활성이 증가하는 것을 확인할 수 있었고, 5,000 ug/ml에서 열수추출물의 경우 85% 유사활성을 나타내었고, 에탄올 추출물의 경우 43%의 유사활성을 나타내었다. Xanthine oxidase 저해능 실험에서도 5,000 ug/ml 농도에서 대조군 BHA 보다 높은 저해능을 효여 우수한 항산화효과를 보였으며, 합성항산화제를 대체할 수 있는 천연항산화제로 사용이 가능할 것으로 사료된다. 항염증효과를 확인하기 위하여 NO 저해 활성 및 iNOS 발현량을 측정하였는데, 열수와 에탄올 추출물 모두 농도가 증가할 수로 NO 저해활성과 iNOS 발현량이 감소하여 우수한 항염증효과를 보였다. 이상의 결과에서 신이화 열수추출물과 에탄올추출물은 우수한 화장품약리활성 및 항염증효과가 있음을 확인할 수 있었고, 안티에이징 및 트러블 피부 개선 화장품 소재로서의 가능성을 확인할 수 있었다.

• 생명과학회지
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• 제28권6호
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• pp.697-707
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• 2018

본 연구는 누에 분말을 단백질 분해력이 뛰어난 Bacillus subtilis KACC 91157 균주로 발효하여 얻은 발효누에 추출물(BSP)을 식이 중에 각각 1%, 2.5%, 5% 수준으로 첨가하여 알코올 투여와 함께 4주 동안 흰쥐에 급여한 후 알코올성 지방간 개선에 미치는 영향을 검토하고자 하였다. 알코올 급여로 인해 증가된 혈중 AST, ALT, ALP 및 LDH 활성은 BSP5군에서 유의적으로 감소하는 경향을 나타내었다. 또한 발효누에 추출물은 간 조직 및 혈중 중성 지질 농도를 정상 수준으로 회복시켜주고, 간 조직 내 ADH, ALDH 활성 증가에 영향을 미치는 것을 확인할 수 있었다. 조직 내 과산화지질 함량을 측정해본 결과 BSP5군에서 유의적으로 감소시켜주는 것을 확인할 수 있었다. 간 조직의 병리학적 관찰 결과 알코올 투여 대조군은 간세포 내 지방구의 수와 크기가 증가하였으나 BSP 투여군에서 유의적으로 지방구가 감소하는 경향을 보였다. 이러한 결과로 보아 고초균 발효누에 추출물은 알코올성 지방간에 대한 개선효과를 가지는 건강기능식품 소재로서 활용할 가능성이 높은 것으로 사료된다.

• 동의생리병리학회지
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• 제27권5호
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• pp.611-616
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• 2013

Alcoholic liver disease (ALD) is a major cause of morbidity and mortality around the world. Although much progress has been made in understanding the pathogenesis of ALD, there remains no effective therapy for it. Accumulated evidence indicates that oxidative stress is the main pathological factors in the development of ALD. Ethanol administration causes accumulation of reactive oxygen species (ROS), including superoxide, hydroxyl radical, and hydrogen peroxide. ROS, in turn, cause lipid peroxidation of cellular membranes, and protein and DNA oxidation, which results in hepatocyte injury. In addition to pro-oxidants formation, antioxidants depletion caused by ethanol administration also results in oxidative stress. The objective of this study is to investigate the effects of Shiryung-tang extract on the chronic alcoholic liver injury induced by EtOH. Male Sprague Dawley rats were used in this study. All rats were maintained under standard laboratory conditions ($23{\pm}1^{\circ}C$, 12h light/12h dark cycles). All animals (n=30) were randomly divided into following groups: (1) Normal group, treated with distilled water (n=10); (2) Control group, treated with ethanol (n=10); (3) Sample group, treated with ethanol + pharmacopuncture (n=10). For oral administration of ethanol in Control and Sample group, the ethanol was dissolved in distilled water in concentrations of 25%(v/v). Throughout the experiment of 8 week, the rats were allowed free access to water and standard chow. Sample group were administrated by Shiryung-tang extract daily for 8 weeks. Control group were given normal saline for same weeks. As a results, the oral administration of ethanol for 8 weeks leads to hepatotoxicity. The levels of hepatic marker such as HDL-cholesterol, triglyceride, aspartate aminotransferase and alanine aminotransferase were altered. The ethanol also increased lipid peroxidation and depletion of antioxidant enzyme activities as well as hepatic tissue injury. However, the treatment of Shiryung-tang extract prevented all the alterations induced by ethanol and returned their levels to near normal. These data suggest that Shiryung-tang extract could have a beneficial effect in inhibiting the oxidative damage induced by chronic ethanol administration. Therefore, Shiryung-tang extract can be a candidate to protect against EtOH-induced liver injury.

• Journal of Nutrition and Health
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• 제36권9호
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• pp.908-917
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• 2003

It has been proposed that oxidative modification of LDL (oxLDL) plays a significant role in the pathogenicity of atherogenesis. We tested the hypothesis that chitin and chitosan may function as antioxidants with respect to 0.1 mg cholesterol/ml LDL incubated with 5 $\mu$ M Cu$^2$$^{+}$alone or in the P338Dl mouse macrophage system using L-ascorbic acid as a standard classical antioxidant. The degree of oxLDL formation was ascertained by the relative electrophoretic mobility (rEM) in the combination of thiobarbituric acid reactive substances (TBARS) levels, and the cytotoxicity of oxLDL was detected by macrophage viability. The oxLDL uptake and foam cell formation of macrophages were measured by Oil Red O staining. Incubation with Cu$^2$$^{+}$and macrophages increased rEM of LDL and stimulated TBARS formation. Culture of macrophages with LDL in the presence 5 $\mu$ M Cu$^2$$^{+}$induced macrophage death. In cell-free system 200 $\mu$g/ml water-soluble chitosan and chitosan-oligosaccharide blocked oxLDL formation. Water-soluble chitosan and chitosan-oligosaccharide blocked oxLDL formation near-completely relative to L-ascorbic acid, whereas water-soluble chitin and chitin-oligosaccharide had no measurable antioxidant effect. In macrophage system water-soluble chitosan and chitosan-oligosaccharide blocked oxidation of LDL with a significant increase in cell viability, and decreased TBARS in medium. As for the inhibitory effect on macrophage foam cell formation, chitosan and its oligosaccharide, but not watersoluble chitin, revealed the effectiveness. The endothelial expression of lectin-like oxLDL receptor-1 (LOX-1) was tested by Western blot analysis, and chitosan, chitosan-oligosaccharide and chitin-oligosaccharide blocked LOX-1 expression. These results indicate that water-soluble chitosan and its oligosaccharide showed the inhibitory effect on Cu$^2$$^{+}$-induced LDL oxidation of macrophages, and chitosan, chitosan-oligosaccharide and chitin-oligosaccharide had blocking effect on oxLDL receptor expression in the human umbilical vein endothelial system. Thus, water-soluble chitosan and its oligosaccharides possess anti-atherogenic potentials possibly through the inhibition of macrophage LDL oxidation or endothelial oxLDL receptor expression depending on chemical types.l types.

• 한국식품과학회지
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• 제48권4호
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• pp.384-391
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• 2016

선행연구(12,13)에 따르면 10주간 ID1216을 투여한 비만 마우스에서 체중과 체지방이 감소하였고 이는 SIRT1-$PGC1{\alpha}$의 발현을 조절하여 나타나는 것으로 확인하였다. 본 연구는 $SIRT1-PGC1{\alpha}-PPAR{\alpha}$의 하위 기전인 UCPs, ACO, aP2의 발현 조절에 ID1216이 영향을 미쳐 그 효과를 나타내는 것을 추가로 확인한 것에 의미가 있다. 또한 10주간 ID1216을 투여한 비만 마우스의 혈액 분석 결과에서도 혈중 중성지방, LDL, HDL total cholesterol등의 혈중 지방질 수치가 개선됨과 동시에 free fatty acid의 농도는 감소하였는데 이는 ID1216이 HSL과 같은 지방질분해효소의 활성을 조절하여 중성지방의 분해과정에 관여하기는 하나 에너지 대사와 지방산 산화 과정에도 복합적으로 관여하여 최종적으로 나타내는 비만 대사 조절 효과에 의한 것으로 판단된다. 따라서 ID1216은 $SIRT1-PGC1{\alpha}-PPAR{\alpha}$ pathway를 촉진시켜 세포와 조직 수준에서 열발생(thermogenesis)에 관여하는 유전자인 UCP1, UCP2, UCP3의 발현을 증가시켰고 ${\beta}$-oxidation에 관여하는 유전자인 ACO와 aP2의 발현도 증가시켰으며 또한 지방분해(lypolysis)에 관여하는 유전자인 ATGL과 HSL의 발현을 증가시키는 분자생물학적 기전을 나타내어 체지방 감소 효과를 나타내는 것으로 확인되었다.

• 대한한의학방제학회지
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• 제25권2호
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• pp.193-207
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• 2017

Objectives : This study was designed to investigate anti-obesity effects of DF in a ob/ob mouse model. Methods : Fifteen-week-old ob/ob mice were divided into four groups: a normal lean group given a standard diet, an ob/ob control group given a standard diet, and DF(1) and DF(2) groups given a standard diet with DF(1) (300 mg/kg), and DF(2) (600 mg/kg), respectively. After 10 weeks of treatment, body weight gain, feeding efficiency ratio, blood lipid markers, fat weight and histology were examined. Results : Body weight gain and fat mass were significantly decreased in DF(1) and DF(2) groups compared with control. The extent of decreases was eminent in DF(2) group. Feeding efficiency ratio were significantly decreased in DF(2) group compared with control. Consistent with their effects on body weight gain and fat mass, circulating concentrations of LDL, total cholesterol, free fatty acid, and insulin were decreased in DF(2) group compared with control. The size of adipocytes were significantly decreased by DF(2) compared with control. Consistent with their effects on body weight gain, hepatic lipid accumulation and liver weights were reduced in DF compared with control. Conclusions : In conclusion, these results suggest that DF not only decrease feeding efficiency ratio, and blood anti-obesity biomarkers, but also reduce fat mass, contributing to the improvement of obesity. DF also inhibits hepatic lipid accumulation.

• Nutrition Research and Practice
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• 제9권2호
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• pp.137-143
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• 2015

BACKGROUND/OBJECTIVES: Mulberry leaves contain quercetin derivatives, which have the effects of reducing obesity and improving lipid and glucose metabolism in mice with obesity. It is not clear whether or not mulberry leaves can directly affect metabolic disorders, in the presence of obesity, because of the interaction between obesity and metabolic disorders. The aim of the current study was to assess the direct action of quercetin derivatives on metabolic disorders in non-obese conditions in short-term high-fat diet fed mice. MATERIALS/METHODS: C57BL/6N mice were fed a high-fat diet, supplemented with either 0% (control), 1%, or 3% mulberry leaf powder (Mul) or 1% catechin powder for five days. Anthropometric parameters and blood biochemistry were determined, and hepatic gene expression associated with lipid and glucose metabolism was analyzed. RESULTS: Body and white fat weights did not differ among the four groups. Plasma triglycerides, total cholesterol, and free fatty acids in the 1%, 3% Mul and catechin groups did not differ significantly from those of the controls, however, plasma glucose and 8-isoprostane levels were significantly reduced. Liver gene expression of gp91phox, a main component of NADPH oxidase, was significantly down-regulated, and PPAR-${\alpha}$, related to ${\beta}$-oxidation, was significantly up-regulated. FAS and GPAT, involved in lipid metabolism, were significantly down-regulated, and Ehhadh was significantly up-regulated. Glucose-metabolism related genes, L-PK and G6Pase, were significantly down-regulated, while GK was significantly up-regulated in the two Mul groups compared to the control group. CONCLUSIONS: Our results suggest that the Mul quercetin derivatives can directly improve lipid and glucose metabolism by reducing oxidative stress and enhancing ${\beta}$-oxidation. The 1% Mul and 1% catechin groups had similar levels of polyphenol compound intake ($0.4{\times}10^{-5}$ vs $0.4{\times}10^{-5}$ mole/5 days) and exhibited similar effects, but neither showed dose-dependent effects on lipid and glucose metabolism or oxidative stress.

• 사상체질의학회지
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• 제19권3호
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• pp.242-256
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• 2007

1. Objectives Purpose of this study is to prove anti-aging and anti-oxidative effects of Gongjinhugwon-dan decoction. 2. Methods The SD rats used in this experiment were 6, 18, and 36 weeks old. Each age group was again divided into three groups. These nine groups consisted of 8 rats each. One group was given no treatment, another group was dosed $200{\mu}l$ of normal saline daily, and the last group was dosed $200{\mu}l$ of 1 % Gongjinhugwon-dan and saline mixture. At the conclusion of the experiment, the age groups were relabelled accordingly (10 weeks, 22 weeks, and 40 weeks). After 4 weeks, change of weight and liver markers were measured. Serum LDL cholesterol, total bilirubin, albumin, glucose, GOT and GPT levels were observed in order to check the hematological modification. Also, each organ tissue was biopsied in order to measure the SOD activity and the glutathione content change. 3. Results & Conclusions Aging did not cause any significant change in GOT and LDH, but GPT and albumin levels showed increase after GHD intake. Serum GPT was lower in the experimental group. Serum total bilirubin of the 40 w GHD group was significantly increased. The populations of dendritic cells in the spleens of the GHD groups were significantly increased. The levels of GSH in the liver of the 40 w GHD group and in the kidney of 22w-GSD were significantly increased in comparison with those of the normal groups. The degenerative change of brain tissue was decreased in the 40 w GHD group compared with those of the 40w normal group and the 40 w saline group. These results suggest that anti-oxidative GSH concentration of liver and kidney in rats treated with GHD showed significant increase in the 40 w GHD group. GHD was effective on increasing anti-oxidative substance in liver and dendritic cells in spleen, thus helping immune system and preventing cell mutation and degenerative change of brain tissues. Further studies and clinical investigation with GHD is needed.

• 한국식품저장유통학회지
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• 제23권2호
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• pp.275-282
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• 2016

본 연구는 4종의 별의별간(SS) 음료의 간보호 소재로서의 이용 가능성을 조사하고자 항산화능 평가, t-BHP 와 $CCl_4$로 산화적 손상 및 급성 간독성 유도한 in vitro, in vivo 모델을 활용하여 간보호능을 평가하였다. 실험결과, 별의별간 01~04는 $50{\mu}M$ vitamin C 와 유사한 항산화 효과를 나타내었다. HepG2 세포에 t-BHP로 산화 스트레스를 유도한 뒤 나타나는 세포독성에 대해 별의별간 01 및 04에서 농도 의존적인 세포 보호효과를 보였으며, ROS 생성 억제에서 별의별간 01, 03, 04에서 농도의존적인 억제를 나타내었다. 미나리가 혼합된 별의별간 04에 대한 급성 간손상 in vivo 모델을 활용하여 간보호능 검증 결과, 별의별간 04는 $CCl_4$로 증가된 혈중 ALT, AST의 유의적 감소, 간 조직중 증가된 MDA 함량 감소 및 감소된 GSH의 유의적 증가를 나타내었다. 또한, 혈청 및 간 조직에서 증가된 중성지방과 콜레스테롤을 유의적으로 감소시켰다. 이러한 결과를 종합하며, 별의별간 04는 in vitro 및 in vivo 모델에서 산화적 손상에 대해 간보호 효과를 나타내었다.

• 한국수산과학회지
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• 제21권1호
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• pp.42-49
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• 1988

미역의 가공적성을 높일려는 목적으로 미역 다당류의 대부분을 차지하고 있는 알긴산의 물성을 이용한 미역쨈을 제조한 결과, 미역중량에 대해 $0.5\%\;K_2HPO_4$ 용액 4배량을 첨가할 경우 시중 딸기쨈과 유사한 점도를 가졌으며 유동특성은 항복력을 가지면서 의가소성형인 혼합형으로 간주되었다. 그리고 생미역으로 만든 쨈이 마른미역의 경우보다 점도가 좋았으며 미역 고유의 색조를 유지하는데도 양호하였다. 또 관능검사결과 부원료로서 사카린 $0.375\%$, 솔비톨 $2.0\%$, 구연산 $0.25\%$, 구운콩가루 $0.5\%$를 첨가하는 것이 양호하였다. 지방산조성에서는 고도불포화지방산인 $C_{18:3},\;C_{20:4},\;C_{20:5},\;C_{22:6}$의 함량이 상당히 높았으며 정미성분에 관여하는 유리아미노산 중 lysine, alanine, glutamic acid의 함량과 유기산중에서 구연산, 옥살산, $\alpha-ketoglutaric\;acid$, 젖산, 숙신산의 함량이 많았다.