• 한국자원식물학회지
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• 제33권6호
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• pp.604-614
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• 2020

Chronological aging and photoaging affect appearance, causing wrinkles, pigmentation, texture changes, and loss of elasticity in the skin. Phragmites communis is a tall perennial herb used for its high nutritional value and for medicinal purposes, such as relief from fever and vomiting and facilitation of diuresis. In this study, we investigated the effects of ethanol extract of P. communis rhizome (PCE) on skin aging. The total flavonoid and total phenolic content in PCE were 2.92 ± 0.007 ㎍ of quercetin equivalents (QE) and 231.8 ± 0.001 ㎍ of gallic acid equivalents (GAE) per 100 mg of dried extract (n = 3). The half-maximal inhibitory concentration (IC50) values of PCE for 2,2-diphenyl-1-picrylhydrazyl radical (DPPH) and hydrogen peroxide scavenging activities were 0.96 and 0.97 mg/mL, respectively. PCE showed inhibitory effects on tyrosinase when L-tyrosine (IC50 = 1.25 mg/mL) and L-3,4-dihydroxyphenylalanine (IC50 = 0.92 mg/mL) were used as substrates. PCE treatment up to 200 ㎍/mL for 24 h did not cause any significant cytotoxicity in B16F10 melanocytes, human dermal fibroblasts (HDFs), and HaCaT keratinocytes. In B16F10 melanocytes, PCE (25 and 50 ㎍ /mL) inhibited melanin production and cellular tyrosinase activity after challenge with α-melanocyte-stimulating hormone (α-MSH; p < 0.05). In HDFs, PCE suppressed the mRNA expression of matrix metalloproteinase-1 (MMP-1) and reduced the activity of elastase (p < 0.05). In addition, ultraviolet B (UVB)-mediated downregulation of hyaluronic acid synthase-2 gene expression in HaCaT keratinocytes was also effectively suppressed by PCE treatment. Overall, our results showed that PCE has potential anti-skin aging activity associated with the suppression of hyperpigmentation, wrinkle formation, and reduction in dryness. PCE is a promising candidate for the development of an anti-skin aging cosmetic ingredient.

• 치위생과학회지
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• 제11권1호
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• pp.55-61
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• 2011

최근에 Odontogenic ameloblast-associated protein (ODAM)은 MMP-20의 발현을 조절하여 법랑모세포 분화와 법랑질의 석회화에 중요한 역할을 한다고 보고되었다. 그러나 이에 대한 명확한 기전은 알려져 있지 않다. 그러므로 이 연구의 목적은 법랑모세포 분화와 법랑질의 석회화 과정에서의 ODAM의 생물학적 기능과 신호 전달 경로를 찾고자 하였다. Ameloblast-lineage cells (ALCs)를 이용하여 ODAM 재조합 단백질을 생성하고 ODAM 과발현 (ODAM overexpressing) 또는 ODAM 억제(ODAM silencing) 세포주를 만들었다. 세포들은 2주 동안 분화 배지에서 ODAM 재조합 단백질을 처리한 군과 처리하지 않는 군으로 나누어 배양하였다. ODAM의 신호 전달 경로를 확인하기 위하여, ALCs에 BMP2와 BMP receptor 1B (BMPR-1B) 억제제인 BAMBI 재조합 단백질을 처리하였고, 또한 BMPR-1B siRNA 이용하여 BMPR-1B의 발현을 억제하였다. 단백질 발현은 western blot 이용하여 분석하였다. 석회화는 sense ODAM 과발현 세포와 ODAM 재조합 단백질을 첨가한 법랑모세포 세포주에서 증진되었다. 또한 ALP 활성화는 sense ODAM 과발현 세포와 ODAM 정제된 단백질를 첨가한 법랑모세포 세포주에서 뚜렷하게 증진되었다. 기관발생과 관련이 있는 BMPR-IB와 석회화 과정과 관련된 CBP2는 ODAM 과발현을 유도한 경우에는 발현이 증가되었으나, ODAM 발현을 억제시킨 경우에는 발현이 현저히 감소하였다. 이상 실험의 결과는 법랑질 형성과정에서 ODAM이 법랑질 석회화를 증진시킬 수 있음을 시사한다.

• 한국식품저장유통학회지
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• 제24권5호
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• pp.688-696
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• 2017

본 연구는 불등풀가사리로부터 분리된 조다당류와 산가수분해된 다당류의 분자량에 따른 이화학적 품질특성과 항산화 활성 및 피부 주름 개선 효과를 확인하였다. 산가수분해 분자량별 다당류의 수율은 100 kDa 이상에서 29.6%로 가장 높았으며, 10 kDa 이하에서 10.4%로 가장 낮았다. 이화학적 특성으로 총당, uronic acid, sulfate 함량은 100 kDa 이상에서 각각 85.82%, 32.85 g/100g 및 39.04%로 조다당에 비해 증가하였다. 색도은 분자량이 증가함에 따라 L 값, a 값 및 b 값이 감소하였으며, 점도는 분자량이 높을수록 증가하였다. ORAC 활성은 100 kDa 이상에서 $180.07{\mu}M$을 나타내어 조다당 $34.70{\mu}M$에 비해 항산화활성이 우수하였다. L132 세포 사멸에 대한 보호효과는 $H_2O_2$ 처리 구간대비 분자량 100 kDa 이상($0.5-5{\mu}g/mL$)에서 87.34-103.85%로 세포 활성이 증가하여 세포 보호효과를 나타내었다. MMP-1 활성은 세포에 UVB를 조사한 후 분자량 100 kDa 이상 $0.05-0.5{\mu}g/mL$ 농도에서 69.67-100.87%의 저해 활성을 나타내었다. 또한, pro-collagen 생합성 역시 UVB를 조사한 후 분자량 100 kDa 이상 $0.05-0.5{\mu}g/mL$ 농도에서 64.91-77.80%의 합성능을 나타내어 농도 의존적으로 증가하는 것을 확인하였다. 따라서, 불등풀가사리 유래 산가수분해된 다당류의 분자량에 따른 주름 개선 효과를 통해 피부 항노화 기능성 소재로 다양하게 활용 가능할 것으로 사료된다.

• 대한한방부인과학회지
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• 제19권1호
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• pp.202-218
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• 2006

Purpose : Because girls at puberty· are lack in sex ability, temporary menstruation disorder can be occured. This disorder is considered that will be disappeared as growing, so people used to leave the disease untreated and just watched. But clinically I frequently experience not to disappear. So I have carried out this study to investigate the actual condition of young girls's menstrual disorders. Methods : I researched 440 high school girls in Pusan by Menstruation Diary which I made about menstrual cycle, duration, amount and pain. The results were managed by the ststistics. Results :1. Menstrual cycle 1) In disorder of menstrual cycle, persons who have Bate menstruation are more than persons who have premature menstruation. 2) Persons who have normal menstrual cycle are in 124 persons(28.51%), the others who have severe premature menstruation or late menstruation more than one time for 4-7 months are in 311 Persons.(71.49%) 2. Menstrual duration and amount 1) Persons who have normal menstrual amount we in 66-89%, hypermenorrhea is in 1-11%, hypomenorrhea is in 5-21%. 2) In the study of menstrual duration, persons more than one thirds are irregular in thier menstrual amount every menstruation. 3) In the study of MMQ, persons who are irregular in thier menstrual amount every menstruation are in 125persons.(29.76%) 3. Menstrual pain 1) Persons who have slight menstrual pain are in 289 persons(65.98%), the middle is in 86 persons(19.63%) the severe is in 34 persons(7.76%) by MMP. 2) Persons who are irregular in thier menstrual pain every menstruation are in 145 persons.(33.11%) Conclusion : In menstrual cycle, there are more persons who have irregular menstrual cycle than normal.(71.49%) In menstrual duration and amount, more persons have normal menstrual amount.(66-89%) In menstrual pain, persons who have slight menstrual pain are the most.(65.98%)

• 생명과학회지
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• 제25권2호
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• pp.249-255
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• 2015

오미자 종자에서 추출된 정유(Schisandrae Semen essential oil, SSeo)의 항암활성 및 작용 기전 해석을 위하여 U937 백혈병 세포를 대상으로 apoptosis 유도 여부를 조사하였다. SSeo 처리에 의한 U937 세포의 증식 억제는 apoptosis 유도와 연관성이 있음을 DAPI 염색을 통한 apoptotic body 출현의 증가, agarose gel 전기영도에 의한 DNA의 단편화 유도 및 flow cytometry 분석에 의한 Sub-G1기 세포 빈도의 증가로 확인하였다. SSeo 처리에 의한 apoptosis 유도에서 IAP family 단백질에 속하는 XIAP, cIAP-1 및 survivin의 발현 감소와 anti-apoptotic Bcl-2 단백질의 발현 저하, DR4 및 DR5의 발현 증가와 연관성이 있었다. SSeo 처리는 또한 Bid truncation, 미토콘드리아 기능 손상, caspases (-3, -8 and -9)의 활성화와 활성형 caspase-3의 기질 단백질인 PARP의 단편화를 동반하였다. 본 연구의 결과는 오미자 정유의 생화학적 항암기전 해석을 이해하고 향후 지속적인 연구를 위한 기초자료로서 활용될 수 있을 것으로 생각된다.

• 대한한방내과학회지
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• 제29권1호
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• pp.200-218
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• 2008

Objectives : The purpose of this study was to investigate the effects of Injinchunggan-tang (Yinchenchinggan-tang) on DMN-induced liver damage by applying proteomics. Materials and Methods : Sprague-Dawley rats were used in this experiment and were divided into the normal group (normal saline), the control group (DMN) and the sample group (DMN+IJCGT). DMN was injected i.p. once a day three times a week for 3 weeks in the control group. Normal saline instead of DMN was administered to the normal group. In the sample group, Injinchunggan-tang (Yinchenchinggan-tang) extract was orally administered once a day for 10 days after DMN was induced. The livers of each group were processed and analyzed by histology, Western blot, $Oxyblot^{TM}$, CBB and 2-dimensional electrophoresis. Results : In the histological findings of the liver, IJCGT reduced collagen deposition and liver damage in DMN-induced hepatic fibrosis. IJCGT increased MMP-13 protein production assessed by western blot. Protein oxidation induced by DMN treatment was decreased by IJCGT. In the 2-dimensional electrophoresis finding, the level of the increased proteins induced by DMN treatment such as GRP 75, 58kDa glucose regulated protein and heat shock 70kDa protein 5 were decreased by IJCGT. IJCGT was considered to have the protective effects on hepatotoxicity induced by DMN. In the 2-dimensional electrophoresis finding, the level of increased oxidized proteins such as heat shock 70 protein, mitochondrial malonyltransferase, calreticulin precursor, actin, NADP-isocitrate dehydrogenase, ankyrin repeat and SOCS box protein 11 were decreased by IJCGT. IJCGT was considered to have protective effect on the protein production induced by DMN treatment. Conclusion : Injinchunggan-tang (Yinchenchinggan-tang) exerts an inhibitory effect against the fibrosis and protein oxidation induced by DMN treatment in the rat liver. IJCGT was considered to have protective effects on the hepatotoxicity and protein production induced by DMN treatment.

• 한국식품영양과학회지
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• 제40권5호
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• pp.649-659
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• 2011

연구에서는 콩다닥냉이 추출물의 항암활성을 조사하기 위하여 잎 및 뿌리의 열수 추출물(WELVL 및 WELVR)이 HCT116 대장암세포의 증식 억제와 연관된 apoptosis 유도 기전에 관한 연구를 시도하였다. 본 연구의 결과에 의하면 HCT116 세포에 WELVL 및 WELVR을 처리하였을 경우에 유발되는 증식 억제 및 형태 변화는 apoptosis 유발과 밀접한 연관이 있었으며, 증식억제 및 apoptosis 유도 효과는 WELVL에 비하여 WELVR에서 높게 나타났다. 특히 WELVR에 의한 apoptosis 유발에는 FasL의 발현 증가를 통한 caspase-8의 활성화와 이로 인한 Bid 단백질의 단편화와 함께 Bcl-2 family의 발현 변화를 통한 mitochondria의 기능 이상과 이로 인한 caspase-9 및 -3의 활성화, 그리고 기질단백질들의 분해가 중요한 역할을 하는 것으로 나타났다. 또한 IAP family의 발현 감소로 인한 caspase의 활성 증가도 어느 정도 관여하는 것으로 생각되어진다. 따라서 WELVR 처리에 의하여 유발되는 apoptosis는 extrinsic pathway 및 intrinsic pathway를 모두 경유하는 multiple apoptotic pathway에 의하여 조절되는 것으로 생각되며, 이러한 결과들은 인체 암세포에서 콩다닥냉이의 항암작용을 이해하는데 중요한 자료가 될 것이고 나아가 콩다닥냉이 추출물을 포함한 그와 유사한 항암제 후보물질들의 연구 기초자료로서 사용될 수 있을 것으로 생각된다.

• Biomolecules & Therapeutics
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• 제25권2호
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• pp.213-221
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• 2017

Baicalein, a natural flavonoid obtained from the rhizome of Scutellaria baicalensis Georgi, has been reported to have anticancer activities in several human cancer cell lines. However, its antimetastatic effects and associated mechanisms in melanoma cells have not been extensively studied. The current study examined the effects of baicalein on cell motility and anti-invasive activity using mouse melanoma B16F10 cells. Within the noncytotoxic concentration range, baicalein significantly inhibited the cell motility and invasiveness of B16F10 cells in a concentration-dependent manner. Baicalein also reduced the activity and expression of matrix metalloproteinase (MMP)-2 and -9; however, the levels of tissue inhibitor of metalloproteinase-1 and -2 were concomitantly increased. The inhibitory effects of baicalein on cell motility and invasiveness were found to be associated with its tightening of tight junction (TJ), which was demonstrated by an increase in transepithelial electrical resistance and downregulation of the claudin family of proteins. Additionally, treatment with baicalein markedly reduced the expression levels of lipopolysaccharide-induced phosphorylated Akt and the invasive activity in B16F10 cells. Taken together, these results suggest that baicalein inhibits B16F10 melanoma cell migration and invasion by reducing the expression of MMPs and tightening TJ through the suppression of claudin expression, possibly in association with a suppression of the phosphoinositide 3-kinase/Akt signaling pathway.

• Journal of Ginseng Research
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• 제45권1호
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• pp.134-148
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• 2021

Background: Lung cancer has a high incidence worldwide, and most lung cancer-associated deaths are attributable to cancer metastasis. Although several medicinal properties of Panax ginseng Meyer have been reported, the effect of ginsenosides Rk1 and Rg5 on epithelial-mesenchymal transition (EMT) stimulated by transforming growth factor beta 1 (TGF-β1) and self-renewal in A549 cells is relatively unknown. Methods: We treated TGF-β1 or alternatively Rk1 and Rg5 in A549 cells. We used western blot analysis, real-time polymerase chain reaction (qPCR), wound healing assay, Matrigel invasion assay, and anoikis assays to determine the effect of Rk1 and Rg5 on TGF-mediated EMT in lung cancer cell. In addition, we performed tumorsphere formation assays and real-time PCR to evaluate the stem-like properties. Results: EMT is induced by TGF-β1 in A549 cells causing the development of cancer stem-like features. Expression of E-cadherin, an epithelial marker, decreased and an increase in vimentin expression was noted. Cell mobility, invasiveness, and anoikis resistance were enhanced with TGF-β1 treatment. In addition, the expression of stem cell markers, CD44, and CD133, was also increased. Treatment with Rk1 and Rg5 suppressed EMT by TGF-β1 and the development of stemness in a dose-dependent manner. Additionally, Rk1 and Rg5 markedly suppressed TGF-β1-induced metalloproteinase-2/9 (MMP2/9) activity, and activation of Smad2/3 and nuclear factor kappa B/extra-cellular signal regulated kinases (NF-kB/ERK) pathways in lung cancer cells. Conclusions: Rk1 and Rg5 regulate the EMT inducing TGF-β1 by suppressing the Smad and NF-κB/ERK pathways (non-Smad pathway).

• 한국환경보건학회지
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• 제48권6호
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• pp.315-323
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• 2022

Background: Socioeconomical disadvantaged communities are more vulnerable to environmental chemical exposure and associated health effects. However, there is limited information on chemical exposure among vulnerable populations in Korea. Objectives: This study investigated chemical exposure among underprivileged populations. We measured urinary metabolites of phthalates in urban disadvantaged communities and investigated their correlations with residential environment factors and relative socioeconomic vulnerability. Methods: Urine samples were collected from 64 residents in a disadvantaged community in Seoul. A total of eight phthalate metabolites were analyzed by liquid chromatography-mass spectroscopy. Analytical method used by the Korean National Environmental Health Survey (KoNEHS) was employed. Covariate variance analysis and general linear regression adjusted with age, sex and smoking were performed. Results: Several phthalate metabolites, namely monomethyl phthalate (MMP), monoethyl phthalate (MEP), mono-(2-ethyl-5-hydroxyhexyl) phthalate (MEHHP), and mono-n-butyl phthalate (MnBP) had higher levels than those reported in the adults of 4th KoNEHS. Notably, the MnBP level was higher in the lower socioeconomic group (geometric mean [GM]=47.3 ㎍/g creatinine) compared to non-recipients (GM=31.9 ㎍/g creatinine) and the national reference level (GM=22.0, 28.2 and 32.2 ㎍/g creatinine for adults, 60's and 70's, respectively.). When age, sex and smoking were adjusted, MEP and MnBP were significantly increased the lower socioeconomic group than non-recipients (p=0.014, p=0.023). The lower socioeconomic group's age of flooring were higher than non-recipients, not statistically significant. Conclusions: These results suggest that a relatively low income and aged flooring could be considered as risk factors for increased levels of phthalate metabolites in socioeconomic vulnerable populations.